WASTE Final 25th Nov

Embed Size (px)

Citation preview

  • 8/19/2019 WASTE Final 25th Nov

    1/75

    University of Mumbai

    A PROJECT REPORT

    ON

    “Research on Waste Management (APMC Vashi, Navi Mumbai)” 

    Submitted by

    Shubhankar Patil Hiremath

    62031

    In partial fulfillment of the award of

    BACHELOR OF MANAGEMENT STUDIES

    TYBMS SEM: V

    TILAK COLLEGE OF SCIENCE AND COMMERCE

    VASHI, NAVI MUMBAI 400705

    2014-2015

  • 8/19/2019 WASTE Final 25th Nov

    2/75

     

    2

    ACKNOWLEDGEMENT

    Making the project was a collaboration process. I have many people to thank for their general

    support. First of all I would like to express my deep appreciation and gratitude to Mr. Arun,

    Principal of Tilak College, in developing my potential, skills and ability with his valuable and

     precious interest and consideration.

    My thanks to Prof. Chaitali Dutta, Project Guide, for providing valuable advice and co-operation

    for this project.

    I wish to convey my gratitude to Prof. Chaitali Dutta for giving her care, patient, unfailing

    support to me and also providing valuable advice and cooperation for this project.

    I offer special thanks to my friends for their constant support and help towards making this

     project.

    I would also like to keep on record my sincere thanks to our staff, for their kind cooperation and

    support at every stage of the project.

  • 8/19/2019 WASTE Final 25th Nov

    3/75

     

    3

    DECLARATION

    I, Shubhankar Patil Hiremath, hereby declare that the project report entitled

    "Research on” under the guidance of Prof. Chaitali Dutta submitted in partial

    fulfilment of requirements for the award of degree of Bachelor of Management

    Studies to Mumbai University. This is my original work and not submitted for

    award of any other degree/ diploma/ fellowship or other similar titles or prize to

    any other institution; organisation/ university by any other person.

    PIACE: - SIGNATURE

    DATE,

    Shubhankar Patil Hiremath

  • 8/19/2019 WASTE Final 25th Nov

    4/75

     

    4

    INDEX

    Sr. No. Title Page No.

    1. 

    Introduction 1

    2.   Need of the Study 16

    3.  Objective 16

    4.  Literature Review 17

    5.  Scope 19

    6.  Raw material 20

    7.  Environmental benefits 23

    8.  Energy benefits 25

    9.  Electricity From Vegetable, Fruit & MS –  Waste 26

    10.  Economic Benefits 29

    11.  Social Benefits  30

    12. 

    Composting 31

    13.  Vermicomposting 32

    14.  Pyrolysis Gasification / Plasma Pyrolysis Vitrification 35

    15.  Production of Refuse Derived Fuel (RDF), also known as

     pelletization

    36

    16.  Sanitary landfilling/landfill gas recovery 37

    17. 

    Municipal Solid Waste (Management and Handling) Rules 2000 38

    18.  Case studies 39

    19.  Biomethanation plant based on vegetable market wastes at

    Koyambedu whole sale market complex, Chennai, Tamil Nadu.

    43

  • 8/19/2019 WASTE Final 25th Nov

    5/75

     

    5

    20.  Study Area 46

    21.  Profile of APMC Market 48

    22.  Research Methodology 49

    23.  Proposals for effective management of waste generated in APMC,

    VASHI.

    51

    24.  Refuse derived fuel (RDF) / Fuel Pelletisation 61

    25.  Gasification as technology for MSW treatment 64

    26.  Biomethanation/Anaerobic Digestion as technology for MSW

    treatment.

    65

    27.  Salient features of biomethanation technology 67

    28.  Vermiculture 68

    29.  Conclusion 69

    30.  References 70

  • 8/19/2019 WASTE Final 25th Nov

    6/75

     

    1. Introduction

    Rapid growth of population & urbanisation has created serious problem of energy requirement

    and solid waste disposal. India produces 150 million tonnes of fruits and vegetables and 50

    million tonnes of waste per annum. Therefore it becomes necessary to develop appropriate

    waste treatment technology for waste. The Ministry of New & Renewable Energy is promoting

    all the Technology Options available for setting up projects for recovery of energy from urban

    wastes.

    The APMC market at Navi Mumbai is one of the biggest agricultural markets

    in Asia and has given a unique identity to the city. Spread over a sprawling 122

    hectares, the Mumbai Agricultural Produce Market Committee at Vashi is entry point of all food

    grains and vegetables meant for the extended region of Metropolitan Mumbai. Divided into

    different separate sections on the basis of the commodit ies, the APMC

     provides separate markets for Fruits, Vegetables, sugar, jaggery and onion -

     potato market.

    Every day, nearly 1,800 tonnes of vegetables serving Mumbai, Thane and Navi Mumbai —  roll

    into the yard from vegetable producing areas like Nashik, Pune, Satara, Sangli and other parts of

    Maharashtra as well as from outside the state.

    Among the waste generated APMC market contributed to great amount of pollution hence there

    is strong need for proper method of management of waste. Waste in APMC consists of

     perishable organic matter which causes health risk and serious threat to environment.

    Anaerobic digestion technique produce energy in the form biogas, electricity and residue can be

    used as manure. Waste, which is of organic nature, constitutes adequate quantity of nutrients

    essential for growth and metabolism of anaerobic bacteria in biogas production.

  • 8/19/2019 WASTE Final 25th Nov

    7/75

     

    Waste management is an important part of the urban infrastructure as it ensures the protection of

    the environment and of human health. It is not only a technical environmental issue but also a

    highly political one. Waste management is closely related to a number of issues such as urban

    lifestyles, resource consumption patterns, jobs and income levels, and other socio-economic and

    cultural factors.

    Arising quality of life and high rates of resource consumption patterns have had a unintended

    and negative impact on the urban environment - generation of wastes far beyond the handling

    capacities of urban governments and agencies. Cities are now grappling with the problems of

    high volumes of waste, the costs involved, the disposal technologies and methodologies, and the

    impact of wastes on the local and global environment.

    But these problems have also provided a window of opportunity for cities to find solutions

    - involving the community and the private sector; involving innovative technologies and disposal

    methods; and involving behavior changes and awareness raising. These issues have been amply

    demonstrated by good practices from many cities around the world. There is a need for a

    complete rethinking of "waste" - to analyze if waste is indeed waste. A rethinking that calls for

  • 8/19/2019 WASTE Final 25th Nov

    8/75

     

    WASTE to become WEALTH

    REFUSE to become RESOURCE

    TRASH to become CASH

    There is a clear need for the current approach of waste disposal that is focused on municipalities

    and uses high energy/high technology, to move more towards waste processing and waste

    recycling (that involves public-private partnerships, aiming for eventual waste minimization -

    driven at the community level, and using low energy/low technology resources.

    Some of the defining criteria for future waste minimization programmes will include deeper

    community participation, understanding economic benefits/recovery of waste, focusing on life

    cycles (rather than end-of-pipe solutions), decentralized administration of waste, minimizing

    environmental impacts, reconciling investment costs with long-term goals.

  • 8/19/2019 WASTE Final 25th Nov

    9/75

     

    What is Waste?

    Waste is rubbish, trash, garbage, or junk is unwanted or undesired material. There are a number of

    different types of waste. It can exist as a solid, liquid, or gas or as waste heat. When released in the

    latter two states the wastes can be referred to as emissions. It is usually strongly linked with

     pollution. Waste may also be intangible in the case of wasted time or wasted opportunities. The

    term waste implies things, which have been used inefficiently or inappropriately.

    Some components of waste can be recycled once recovered from the waste stream, e.g. plastic

     bottles, metals, glass or paper. The biodegradable component of wastes (e.g. paper & food waste)

    can be composted or anaerobically digested to produce soil improvers and renewable fuels. If it is

    not dealt with sustainably in this manner biodegradable waste can contribute to greenhouse gas

    emissions and by implication climate change.

    There are two main definitions of waste. One view comes from the individual or organization

     producing the material, the second is the view of Government, and is set out in different acts of

    waste legislation. The two have to combine to ensure the safe and legal disposal of the waste.

  • 8/19/2019 WASTE Final 25th Nov

    10/75

     

    What is organic waste?

    Organic waste is material that is biodegradable and comes from either a plant or animal.

    Organic waste is usually broken down by other organisms over time and may also be referred to

    as wet waste. Most of the time, it s made up of vegetable and fruit debris, paper, bones and

    human waste which quickly disintegrate.

    In an effort to keep the environment clean and safe, organic waste is preferred over items that

    can damage the earth and that do not disintegrate.

    What is management?

    The term "management" characterizes the process of and/or the personnel leading and directing

    all or part of an organization (often a business) through the deployment and manipulation of

    resources (human, financial, material, intellectual or intangible).

    According to the Oxford English Dictionary, the word "manage" comes from the Italian

    maneggiare (to handle —  especially a horse), which in turn derives from the Latin manus (hand).

    The French word management (later ménagement) influenced the development in meaning of the

    English word management in the 17th and 18th centuries.

  • 8/19/2019 WASTE Final 25th Nov

    11/75

     

    What is Waste Management?

    Waste management is the collection, transport, processing (waste treatment), recycling or

    disposal of waste materials, usually ones produced by human activity, in an effort to reduce their

    effect on human health or local aesthetics or amenity. A sub focus in recent decades has been to

    reduce waste materials' effect on the natural world and the environment and to recover resources

    from them. Waste management can involve solid, liquid or gaseous substances with different

    methods and fields of expertise for each.

    Waste management practices differ for developed and developing nations, for urban and rural

    areas, and for residential, industrial, and commercial producers. Waste management for non-

    hazardous residential and institutional waste in metropolitan areas is usually the responsibility of

    local government authorities, while management for non-hazardous commercial and industrial

    waste is usually the responsibility of the generator.

  • 8/19/2019 WASTE Final 25th Nov

    12/75

     

    The purpose of waste management is to: 

    1. Protect people who handle waste items from

    accidental injury.

    2. Prevent the spread of infection to healthcare workers

    who handle the waste.

    3. Prevent the spread of infection to the local

    community.

    4. Safely dispose of hazardous materials.

    5. Open piles of waste should be avoided because

    they are a risk to those who scavenge and

    unknowingly reuses contaminate items.

  • 8/19/2019 WASTE Final 25th Nov

    13/75

     

    The History of waste Management

    Historically, the amount of  wastes generated by human population was insignificant mainly due

    to the low population densities, coupled with the fact there was very little exploitation of  natural

    resources.  Common wastes produced during the early ages were mainly ashes and human &

     biodegradable wastes,  and these were released back into the ground locally, with minimal

    environmental impact. 

    Before the widespread use of metals,  wood was widely used for most applications. However,

    reuse of wood has been well documented nevertheless, it is once again well documented that

    reuse and recovery of such metals have been carried out by earlier humans.

    With the advent of industrial revolution, waste management became a critical issue. This was

    due to the increase in population and the massive migration of people to industrial towns and

    cities from rural areas during the 18th century. There was a consequent increase in industrial and

    domestic wastes posing threat to human health and environment.

    Waste has played a tremendous role in history. The Plague,  cholera and typhoid fever,  to

    mention a few, were diseases that altered the populations of many country. They were

     perpetuated by filth that harbored rats, and contaminated water supply. It was not uncommon for

    everybody to throw their waste and human wastes out of the window which would decompose in

    the street.

    http://en.wikipedia.org/wiki/Wastehttp://en.wikipedia.org/wiki/Humanhttp://en.wikipedia.org/wiki/Population_densitieshttp://en.wikipedia.org/wiki/Natural_resourceshttp://en.wikipedia.org/wiki/Natural_resourceshttp://en.wikipedia.org/wiki/Biodegradable_wastehttp://en.wikipedia.org/wiki/Environmental_impacthttp://en.wikipedia.org/wiki/Metalhttp://en.wikipedia.org/wiki/Woodhttp://en.wikipedia.org/wiki/Industrial_revolutionhttp://en.wikipedia.org/wiki/18th_centuryhttp://en.wikipedia.org/wiki/Domestic_wastehttp://en.wikipedia.org/wiki/Human_healthhttp://en.wikipedia.org/wiki/Bubonic_Plaguehttp://en.wikipedia.org/wiki/Cholerahttp://en.wikipedia.org/wiki/Typhoid_feverhttp://en.wikipedia.org/wiki/Typhoid_feverhttp://en.wikipedia.org/wiki/Cholerahttp://en.wikipedia.org/wiki/Bubonic_Plaguehttp://en.wikipedia.org/wiki/Human_healthhttp://en.wikipedia.org/wiki/Domestic_wastehttp://en.wikipedia.org/wiki/18th_centuryhttp://en.wikipedia.org/wiki/Industrial_revolutionhttp://en.wikipedia.org/wiki/Woodhttp://en.wikipedia.org/wiki/Metalhttp://en.wikipedia.org/wiki/Environmental_impacthttp://en.wikipedia.org/wiki/Biodegradable_wastehttp://en.wikipedia.org/wiki/Natural_resourceshttp://en.wikipedia.org/wiki/Natural_resourceshttp://en.wikipedia.org/wiki/Population_densitieshttp://en.wikipedia.org/wiki/Humanhttp://en.wikipedia.org/wiki/Waste

  • 8/19/2019 WASTE Final 25th Nov

    14/75

     

    Waste Management Concepts

    There are a number of concepts about waste management, which vary in their usage between

    countries or regions. This section presents some of the most general, widely-used concepts.

    Waste hierarchy

    The waste hierarchy refers to the "3 Rs" reduce,  reuse and recycle,  which classify waste

    management strategies according to their desirability in terms of  waste minimization. The waste

    hierarchy remains the cornerstone of most waste minimization strategies. The aim of the waste

    hierarchy is to extract the maximum practical benefits from products and to generate the

    minimum amount of waste.

    Some waste management experts have recently incorporated a 'fourth R': "Re-think", with the

    implied meaning that the present system may have fundamental flaws, and that a thoroughly

    effective system of waste management may need an entirely new way of looking at waste.

    http://en.wikipedia.org/wiki/Waste_management_conceptshttp://en.wikipedia.org/wiki/Waste_hierarchyhttp://en.wikipedia.org/wiki/Reduce_%28waste%29http://en.wikipedia.org/wiki/Reusehttp://en.wikipedia.org/wiki/Recyclinghttp://en.wikipedia.org/wiki/Waste_minimizationhttp://en.wikipedia.org/wiki/Image:Waste-hierarchy.pnghttp://en.wikipedia.org/wiki/Waste_minimizationhttp://en.wikipedia.org/wiki/Recyclinghttp://en.wikipedia.org/wiki/Reusehttp://en.wikipedia.org/wiki/Reduce_%28waste%29http://en.wikipedia.org/wiki/Waste_hierarchyhttp://en.wikipedia.org/wiki/Waste_management_concepts

  • 8/19/2019 WASTE Final 25th Nov

    15/75

     

    10 

    Some "re-think" solutions may be counter-intuitive, such as cutting fabric patterns with slightly

    more "waste material" left -- the now larger scraps are then used for cutting small parts of the

     pattern, resulting in a decrease in net waste.

    This type of solution is by no means limited to the clothing industry. Source reduction involves

    efforts to reduce hazardous waste and other materials by modifying industrial production. Source

    reduction methods involve changes in manufacturing technology, raw material inputs, and

     product formulation. At times, the term "pollution prevention" may refer to source reduction.

    Another method of source reduction is to increase incentives for recycling. Many communities in

    the United States are implementing variable rate pricing for waste disposal (also known as Pay as

    You Throw - PAYT) which has been effective in reducing the size of the municipal waste stream

    Source reduction is typically measured by efficiencies and cutbacks in waste. Toxics use

    reduction is a more controversial approach to source reduction that targets and measures

    reductions in the upstream use of toxic materials.

    Toxics use reduction emphasizes the more preventive aspects of source reduction but, due to its

    emphasis on toxic chemical inputs, has been opposed more vigorously by chemical

    manufacturers.

    Toxics use reduction programs have been set up by legislation in some state

    http://en.wikipedia.org/wiki/PAYThttp://en.wikipedia.org/wiki/Toxics_use_reductionhttp://en.wikipedia.org/wiki/Toxics_use_reductionhttp://en.wikipedia.org/wiki/Toxics_use_reductionhttp://en.wikipedia.org/wiki/Toxics_use_reductionhttp://en.wikipedia.org/wiki/PAYT

  • 8/19/2019 WASTE Final 25th Nov

    16/75

     

    11 

    Waste Collection Method

    Collection methods vary widely between different countries and regions, and it would be

    impossible to describe them all. Many areas, especially those in less developed countries, do not

    have a formal waste-collection system in place.

    For example, in Australia most urban domestic households have a 240-litre (63.4 U.S. gallon)

     bin that is emptied weekly from the curb using side- or rear-loading compactor trucks. In Europe

    and a few other places around the world, a few communities use a proprietary collection system

    known as Envac, which conveys refuse via underground conduits using a vacuum system. In

    Canadian urban centers curbside collection is the most common method of disposal, whereby the

    city collects waste and/or recyclables and/or organics on a scheduled basis. In rural areas people

    usually dispose of their waste by hauling it to a transfer station. Waste collected is then

    transported to a regional landfill. 

    http://en.wikipedia.org/wiki/Canadianhttp://en.wikipedia.org/wiki/Curbside_collectionhttp://en.wikipedia.org/wiki/Landfillhttp://en.wikipedia.org/wiki/Landfillhttp://en.wikipedia.org/wiki/Curbside_collectionhttp://en.wikipedia.org/wiki/Canadian

  • 8/19/2019 WASTE Final 25th Nov

    17/75

     

    12 

    WASTE DISPOSAL

    METHODS

    Disposal methods for waste products vary widely, depending

    on the area and type of waste material. For example, in

    Australia, the most common method of disposal of solid

    household waste is in landfill sites, as it is a large country with

    a low-density population. By contrast, in Japan it is more

    common for waste to be incinerated, because the country is

    smaller and land is scarce. Other waste types (such as liquid

    sewage) will be disposed of in different ways in both countries.

    Landfill  Incineratio

     

    Resource 

    recover  Recovery 

    http://en.wikipedia.org/wiki/Australiahttp://en.wikipedia.org/wiki/Japanhttp://en.wikipedia.org/wiki/Incineratehttp://en.wikipedia.org/wiki/Incineratehttp://en.wikipedia.org/wiki/Japanhttp://en.wikipedia.org/wiki/Australia

  • 8/19/2019 WASTE Final 25th Nov

    18/75

     

    13 

    Landfill  a landfill compaction vehicle in operation 

    Disposing of waste in a landfill is

    one of the most traditional method

    of waste disposal, and it remains a

    common practice in most countries.

    Historically, landfills were often

    established in disused quarries, 

    mining voids or  borrow pits. 

    A properly-designed and well-managed landfill can be a hygienic and relatively inexpensive

    method of disposing of waste materials in a way that minimizes their impact on the local

    environment.

    Older, poorly-designed or poorly-managed landfills can create a number of adverse

    environmental impacts such as wind-blown litter, attraction of  vermin, and generation of  leachate

    where result of rain percolating through the waste and reacting with the products of

    decomposition, chemicals and other materials in the waste to produce the leachate which can

     pollute groundwater and surface water.

    Another byproduct of landfills is

    landfill gas (mostly composed of

    methane and carbon dioxide), which is

     produced as organic waste breaks

    down anaerobically.  This gas can

    http://en.wikipedia.org/wiki/Landfill_compaction_vehiclehttp://en.wikipedia.org/wiki/Quarryhttp://en.wikipedia.org/wiki/Mininghttp://en.wikipedia.org/wiki/Borrow_pithttp://en.wikipedia.org/wiki/Litterhttp://en.wikipedia.org/wiki/Verminhttp://en.wikipedia.org/wiki/Leachatehttp://en.wikipedia.org/wiki/Pollutionhttp://en.wikipedia.org/wiki/Groundwaterhttp://en.wikipedia.org/wiki/Landfill_gashttp://en.wikipedia.org/wiki/Methanehttp://en.wikipedia.org/wiki/Carbon_dioxidehttp://en.wikipedia.org/wiki/Anaerobic_digestionhttp://en.wikipedia.org/wiki/Anaerobic_digestionhttp://en.wikipedia.org/wiki/Carbon_dioxidehttp://en.wikipedia.org/wiki/Methanehttp://en.wikipedia.org/wiki/Landfill_gashttp://en.wikipedia.org/wiki/Groundwaterhttp://en.wikipedia.org/wiki/Pollutionhttp://en.wikipedia.org/wiki/Leachatehttp://en.wikipedia.org/wiki/Verminhttp://en.wikipedia.org/wiki/Litterhttp://en.wikipedia.org/wiki/Borrow_pithttp://en.wikipedia.org/wiki/Mininghttp://en.wikipedia.org/wiki/Quarryhttp://en.wikipedia.org/wiki/Landfill_compaction_vehiclehttp://en.wikipedia.org/wiki/Image:Landfill_compactor.jpg

  • 8/19/2019 WASTE Final 25th Nov

    19/75

     

    14 

    create odor problems, kill surface vegetation, and is a greenhouse gas. 

    Design characteristics of a modern landfill include methods to contain leachate, such as clay or

     plastic lining material. Disposed waste is normally compacted to increase its density and stabiles

    the new landform, and covered to prevent attracting vermin (such as mice or  rats) and reduce the

    amount of wind-blown litter.

    Many landfills also have a landfill gas extraction system installed after closure to extract the

    landfill gas generated by the decomposing waste materials. Gas is pumped out of the landfill

    using perforated pipes and flared off or burnt in a gas engine to generate electricity. 

    Even flaring the gas is a better environmental outcome than allowing it to escape to the

    atmosphere, as this consumes the methane, which is a far more potent greenhouse gas than

    carbon dioxide.

    Many local authorities, especially in urban areas, have found it difficult to establish new landfills

    due to opposition from owners of adjacent land. Few people want a landfill in their local

    neighborhood.

    As a result, solid waste disposal in these areas has become more expensive as material must be

    transported further away for disposal (or managed by other methods).

    This fact, as well as growing concern about the impacts of excessive materials consumption, has

    given rise to efforts to minimize the amount of orts include taxing or levying waste sent to

    landfill, recycling the materials, converting material to energy, designing products that use less

    http://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Verminhttp://en.wikipedia.org/wiki/Micehttp://en.wikipedia.org/wiki/Ratshttp://en.wikipedia.org/wiki/Landfill_gashttp://en.wikipedia.org/wiki/Gas_enginehttp://en.wikipedia.org/wiki/Electricityhttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Electricityhttp://en.wikipedia.org/wiki/Gas_enginehttp://en.wikipedia.org/wiki/Landfill_gashttp://en.wikipedia.org/wiki/Ratshttp://en.wikipedia.org/wiki/Micehttp://en.wikipedia.org/wiki/Verminhttp://en.wikipedia.org/wiki/Greenhouse_gas

  • 8/19/2019 WASTE Final 25th Nov

    20/75

     

    15 

    material, and legislation mandating that manufacturers become responsible for disposal costs of

     products or packaging.

    A related subject is that of industrial ecology, where the material flows between industries is

    studied. The by-products of one industry may be a useful commodity to another, leading to a

    reduced materials waste stream.

    http://en.wikipedia.org/wiki/Industrial_ecologyhttp://en.wikipedia.org/wiki/Industrial_ecology

  • 8/19/2019 WASTE Final 25th Nov

    21/75

     

    16 

    2. Need of the Study

    APMC Market in Vashi is one of the biggest markets in Asia. Municipal solid Waste generated

    in APMC market is about 98.87 TPD. About 90.96 contents are biodegradable, i.e. 92% of total

    waste is organic waste, which has the potential to generate energy,

    3. Objective

    It is to study how the organic waste generated in APMC market be utilized for recycling to

    generate energy, reducing load to land fill site, reuse the manure as fertilizer, indirectly

     promoting organic farming.

      On the existing arrival of Commodities quantity.

      On organic waste generated.

      Present method of disposal of waste.

      Provide future plan for waste management for waste.

  • 8/19/2019 WASTE Final 25th Nov

    22/75

     

    17 

    4. Literature Review

    Solid waste management is one among the basic essential services provided by municipal

    authorities in the country to keep urban centers clean. Disposal of waste is the most neglected

    area of SWM services and the current practices are grossly unscientific. Almost all municipal

    authorities deposit solid waste at a dump-yard situated within or outside the city haphazardly and

    do not bother to spread and cover the waste with inert material. These sites emanate foul smell

    and become breeding grounds for flies, rodent, and pests. Liquid seeping through the rotting

    organic waste called leachate pollutes underground water and poses a serious threat to health and

    environment.

    Landfill sites also release landfill gas with 50 to 60 per cent methane by volume. Methane is 21

    times more potent than carbon dioxide aggravating problems related to global warming. It is

    estimated by TERI that in 1997 India released about 7 million tonnes of methane into the

    atmosphere. This could increase to 39 million tonnes by 2047 if no efforts are made to reduce the

    emission through composting, recycling, etc.

    The Ministry of New & Renewable Energy is promoting all the Technology Options available

    for setting up projects for recovery of energy from urban wastes.

  • 8/19/2019 WASTE Final 25th Nov

    23/75

     

    18 

    The main technological options available for processing/ treatment and

    disposal of MSW are

      Composting,

      Vermicomposting,

      Anaerobic digestion/biomethanation,

      Incineration,

      Gasification

      Production of Refuse Derived Fuel (RDF), also known as pelletization

      Sanitary landfilling/landfill gas recovery.

  • 8/19/2019 WASTE Final 25th Nov

    24/75

     

    19 

    5. Scope

    The main scope for the study is to study the:

      Types of waste

      Different methods to treat waste generated in vegetable market.

    By comparing the treatment to generate energy in the form of biogas, electricity at the source of

    generation or nearest site or near land fill area.

  • 8/19/2019 WASTE Final 25th Nov

    25/75

     

    20 

    6. Raw material:

    As the objective of the scheme is to set up "Fruit and Vegetable Waste Compost

    Production Units", the raw material can be fruit and vegetable waste. In the absence of sufficient

    quantity of fruit and vegetable waste, other agricultural wastes, crop residues, other agro-wastes

    and kitchen waste can also be used.

    The suitable materials for composting are : vegetable and fruit scraps, fallen leaves, tea leaves

    and tea bags, coffee grounds, vacuum cleaner dust, soft stems, dead flowers, used vegetable

    cooking oil, egg shells, old newspapers, lawn

    clippings, wood ash etc.; the unsuitable

    materials for composting are : meat and dairy

     products, diseased plants, metals, plastic, glass,

    fat magazines, large branches, weeds that have

    seeds or underground stems, bread or cake,

     bones, any other material containing either

    heavy metals or pathogens.

  • 8/19/2019 WASTE Final 25th Nov

    26/75

     

    21 

    Flow Diagram Showing Various Steps in Compost Production

    Receiving Fruit & Vegetable waste

    Segregation of non bio degradable materials

    Windrows

    Addition of Culture/Inoculants/Bulking agents

    Covering the windrows by polythene

    Turning

    Watering

    Repeat Turning & Watering

    Drying

    Segregation of non biodegradable materials

    Screening (4 stages)

    Mature compost

    Value addition

    Packing

    Storage

    Distribution 

  • 8/19/2019 WASTE Final 25th Nov

    27/75

     

    22 

    The raw material for the unit is fruit and vegetable waste which is presently transported / dumped

    for land fill by the APMC/Municipality/Mandi authority by their vehicles. This raw material may

     be transported to the unit by the municipality (mandi authority) free of cost. In case, municipality

    / mandi authority is not able to supply raw material on account of any disturbance, strike, etc, the

    company may take up the responsibility of collecting the wastes from the mandi. 

    Adequate transport arrangements may be made by the unit for transport of raw material from the

    mandi in consultation with APMC/ Municipality / Mandi Authority. The transport for lifting of

    final produce and the waste like plastic materials etc. is to be arranged by the company and the

    cost of the same will be borne by the entrepreneur

  • 8/19/2019 WASTE Final 25th Nov

    28/75

     

    23 

    7. Environmental benefits:

      Closed System in Anaerobic digestion eliminates Odors.

    Biogas can be burned to produce heat, electricity, or both the anaerobically-digested manure, can

     be stored and applied to fields with significantly less odor than stored, untreated liquid manure.

    Anaerobic digestion does not reduce the volume or nutrient value of manure. If dilution water is

    added to the system, the volume of material to handle is increased.

      Residence Time & Temperature Destroys Pathogens.

    Most of the pathogenic bacteria’s are belong to the mesophilic group, but there are also some

    which are thermophilic which has around 60 degree centigrade of maximum growth temperature.

    Therefore, heat treatment which is widely known as "pasteurization" is often considered as the

    easiest and applicable yet effective method to reduce microbiological contamination in raw

    foods.

    The temperature used is around 63 - 65 degree centigrade (30 minutes) for or 73 - 75 degree

    centigrade (15 seconds). But it can also be increased up to 90 degree for some minutes (called

    high pasteurization)

  • 8/19/2019 WASTE Final 25th Nov

    29/75

     

    24 

      Reduces CH4 (Methane) and CO2

    (Carbon Dioxide) emissions.

      GHG (Green House Gas) and

    Ammonia Emissions.

      Produces Valuable Pathogen- Free,

     Nutrient - Rich, Organic Fertilizers.

      Captures Nutrients for Reuse &

    Reduces Use of Inorganic Fertilizers.

    Increases Beneficial Reuse of Recycled Water.

    Protects Groundwater & Surface Water Resources.

    Reduces load to Landfills.

  • 8/19/2019 WASTE Final 25th Nov

    30/75

     

    25 

    8. Energy benefits:

    • Generates High Quality Renewable Fuel.

    • Reduces Reliance on Energy

    Imports.

    • Contributes to Decentralized,

    Distributed Power Systems.

    • Proven Source of Electricity, Heat &

    Transportation Fuel.

  • 8/19/2019 WASTE Final 25th Nov

    31/75

     

    26 

    9. Electricity from Vegetable, Fruit & MS - Waste

    India with its huge consumer population produces colossal amount of vegetable and fruit waste

    every day. A prudent use of this waste can overcome the challenges of power shortage in both

    rural and urban areas. This waste can be converted into a

    mixture of combustible gases which in turn can be used in

    electricity generation. This is a cleaner, greener and

    economical method of power generation. We have presented

    futuristic concept to generate electricity from these Bio-

    Wastes and thus, we are contributing towards making this

    world a better place to live. 

    POTENTIAL BENEFICIARIES: Vegetable Mandis Markets, Agro-based companies,

    hostels, hotels, restaurants, canteens, hospitals, housing societies, institutions, waste dumping

    yards etc. Vegetable Markets, Agro and Food based companies, Hostels, Hotels, Restaurants,

    Canteens, Hospitals, Housing societies, Institutions, Waste dumping fields etc.

  • 8/19/2019 WASTE Final 25th Nov

    32/75

     

    27 

    CALCULATION CHART:

    Bio Waste To Generate one Cubic meter Biogas Electricity Generated from One cubic meter Biogas

    Fruit 2 kg 2 kw

    Vegetable 4 kg 2 kw

    Kitchen 3 kg 2 kw

    India is plagued by malnutrition and soaring inflation, but it’s not for lack of food.

    India is the second largest grower of

    fresh produce, but loses an estimated

    40 percent of its fruit and vegetables

    rot because of a lack of refrigerated

    trucking, poor roads, inclement

    weather and corruption.

  • 8/19/2019 WASTE Final 25th Nov

    33/75

     

    28 

     Not all the produce that arrives at the market from distant places can be sold because of

    spoilage and damage age in transit.

  • 8/19/2019 WASTE Final 25th Nov

    34/75

     

    29 

    10. Economic Benefits:

    • Reduces Operating/Energy Costs. 

    • Reduces Water Consumption. 

    • Reduces Reliance on Energy Imports. 

    • Creates Value, Jobs and New Revenue Streams. 

  • 8/19/2019 WASTE Final 25th Nov

    35/75

     

    30 

    11. Social Benefits:

      Job creation leads to increase in skilled labour community.

     Providing independent energy source.

      Reduction in pollution indirectly leads to health benefits of public.

    Thus treated organic waste generated in APMC Vashi, Navi Mumbai.

      Reduces load to Landfill area.

      Recycling to generate energy.

      Reusing the digestate as organic fertilizer.

  • 8/19/2019 WASTE Final 25th Nov

    36/75

     

    31 

    12. Composting:

    Composting is a technology known in India since times immemorial. Composting is the

    decomposition of organic matter by microorganism in warm, moist, aerobic and anaerobic

    environment. Farmers have been using compost made out of cow dung and other agro-waste.

    Composting of MSW is, therefore, the most simple and cost effective technology for treating the

    organic fraction of MSW.

    Full-scale commercially viable composting technology is already demonstrated in India and is in

    use in several cities and towns. Its application to farm land, tea gardens, fruit orchards or its use

    as soil conditioner in parks, gardens, agricultural lands, etc., is however, limited on account of

     poor marketing. Main advantages of composting include improvement in soil texture and

    augmenting of micronutrient deficiencies. It also increases moisture-holding capacity of the soil

    and helps in maintaining soil health.

  • 8/19/2019 WASTE Final 25th Nov

    37/75

     

    32 

    13. Vermicomposting

    Vermi-compost is the natural organic manure produced from the excreta of earthworms fed on

    scientifically semi-decomposed organic waste. A few vermi composting plants generally of small

    size have been set up in some cities and towns in India. Normally, vermi-composting is preferred

    to microbial composting in small towns as it requires less mechanization and it is easy to operate.

    It is, however, to be ensured that toxic material does not enter the chain which if present could

    kill the earthworms.

  • 8/19/2019 WASTE Final 25th Nov

    38/75

     

    33 

    Anaerobic digestion and Biomethanation

    Biomethanation is a comparatively well-established technology for disinfections, deodorization

    and stabilization of sewage sludge, farmyard manures, animal slurries, and industrial sludge. Its

    application to the organic fraction of MSW is more recent and less extensive. It leads to bio-

    gas/power generation in addition to production of compost (residual sludge). This method

     provides a value addition to the aerobic (composting) process and also offers certain other clear

    advantages over composting

    in terms of energy

     production/consumption,

    compost quality and net

    environmental gains.

    This method is suitable for

    kitchen wastes and, other organic wastes, which may be too wet and lacking in structure for

    aerobic composting. It is a net energy-producing process (100 – 150 kWh per tonne of waste

    input). A totally enclosed system enables all the gas produced to be collected for use. A modular

    construction of plant and closed treatment needs less land area. This plant is free from bad odor,

    rodent and fly menace, visible pollution, and social resistance. It has potential for co-disposal

    with other organic waste streams from agro-based industry. The plant can be scaled up

    depending on the availability of the waste

  • 8/19/2019 WASTE Final 25th Nov

    39/75

  • 8/19/2019 WASTE Final 25th Nov

    40/75

     

    35 

    14. Pyrolysis Gasification / Plasma Pyrolysis Vitrification

    Pyrolysis gasification processes are established for homogenous organic matter like wood, pulp,

    etc., while plasma pyrolysis vitrification is a relatively new technology for disposal of

     particularly hazardous wastes, radioactive wastes, etc. Toxic materials get encapsulated in

    vitreous mass, which is relatively much safer to handle than incinerator/gasifier ash. These are

    now being offered as an attractive option for disposal of MSW also.

    In all these processes, besides net energy recovery, proper destruction of the waste is also

    ensured. These processes, therefore, have an edge over incineration.

    It is a capital and energy intensive process and net energy recovery may suffer in case of wastes

    with excessive moisture and inert content.

  • 8/19/2019 WASTE Final 25th Nov

    41/75

     

    36 

    15. Production of Refuse Derived Fuel (RDF), also known as pelletization 

    It is basically a processing method for mixed MSW, which can be very effective in preparing an

    enriched fuel feed for thermal processes like incineration or industrial furnaces. The RDF pellets

    can be conveniently stored and transported

    Long distances and can be used as a coal substitute at a lower price. As pelletization involves

    significant MSW sorting operations, it provides a greater opportunity to remove environmentally

    harmful materials from the incoming waste prior to combustion.

    The process, however, is energy intensive and not suitable for wet MSW during rainy season. If

    RDF fluff/pellets are contaminated by toxic/hazardous material, the pellets are not safe for

     burning in the open or for domestic use.

      Calorific Value: 2500 –  3000Kcal/Kg.

      High Volatile Matter (> 60%)

      Less fixed carbon (12-18%)

      Less ash content (10-15%)

      Moisture: (7.2 %)

  • 8/19/2019 WASTE Final 25th Nov

    42/75

     

    37 

    16. Sanitary landfilling/landfill gas recovery

    Sanitary landfills are the ultimate means of disposal of all types of residual, residential,

    commercial and institutional waste as well as unutilized municipal solid waste from waste

     processing facilities and other types of inorganic waste and inert that cannot be reused or

    recycled in the foreseeable future.

    Its main advantage is that it is the least cost option for waste disposal and has the potential for

    the recovery of landfill gas as a source of energy, with net environmental gains if organic wastes

    are land filled.

    The gas after necessary cleaning, can be

    utilized for power generation or as

    domestic fuel for direct thermal

    applications. Highly skilled personnel are

    not required to operate a sanitary landfill.

    Major limitation of this method is the

    costly transportation of MSW to far away

    landfill sites.

  • 8/19/2019 WASTE Final 25th Nov

    43/75

     

    38 

    17. Municipal Solid Waste (Management and Handling) Rules 2000

    The Ministry of Environment and Forest notified Municipal Solid Waste (Management and

    Handling) Rules 2000 after widely circulating the draft rules in 1999 inviting objections and

    suggestions if any and made it mandatory for all municipal authorities in the country,

    irrespective of their size and population, to implement the rules.

    1.  Prohibit littering on the streets by ensuring storage of waste at source in two bins; one for

     biodegradable waste and another for recyclable material.

    2.  Primary collection of biodegradable and non-biodegradable waste from the doorstep,

    (including slums and squatter areas) at pre-informed timings on a day-to-day basis using

    containerized tricycle/handcarts/pick up vans.

    3. Street sweeping covering all the residential and commercial areas on all the days of the year

    irrespective of Sundays and public holidays.

    4. Abolition of open waste storage depots and provision of covered containers or closed body

    waste storage depots.

    5. Transportation of waste in covered vehicles on a day to day basis.

    6. Treatment of biodegradable waste using composting or waste to energy technologies meeting

    the standards laid down.

    7. Minimize the waste going to the land fill and dispose of only rejects from the treatment plants

    and inert material at the landfills as per the standards laid down in the rules

  • 8/19/2019 WASTE Final 25th Nov

    44/75

     

    39 

    18. CASE STUDIES 

    And Municipal Ward, Pune Municipal Corporation, Pune, Maharashtra.

    Organic Waste Converter

    OWC transformers organic waste into odor free flow able raw compost in 15-20 minutes. When

    this is cured further, it gives nutrient rich, soil enhancing compost which can be used to create

    terrace garden, landscaping.

    * Successfully erected, commissioned and operating 2 Tons per day plant at Aundh Vegetable

    Market, Pune

  • 8/19/2019 WASTE Final 25th Nov

    45/75

     

    40 

    Biogas Plant to generate Electricity.

      Segregated waste receiving platform

     Neat and hygienic.

    Safety precautions taken by the waste

    Collectors.

      At the sorting table, mechanized shredders are used to crush

    the waste into slurry

    Personnel Protective Equipment used.

      Air tight digester covers constructed in RCC with

    MS reinforced FRP top cover.

    Life cycle 20 years

     No foul odor.

  • 8/19/2019 WASTE Final 25th Nov

    46/75

  • 8/19/2019 WASTE Final 25th Nov

    47/75

     

    42 

    Biogas Induced Mixing Arrangement (BIMA) Digester Technology

    Given below schematic diagram of BIMA Technology based Biogas & Fertilizer (BGF) Plant

    illustrates diagrammatic view of Waste-to-Energy process.

  • 8/19/2019 WASTE Final 25th Nov

    48/75

     

    43 

    19. BIOMETHANATION PLANT BASED ON VEGETABLE MARKET

    WASTES AT KOYAMBEDU WHOLE SALE MARKET COMPLEX,

    CHENNAI, TAMIL NADU.

    The Market Authorities are presently having wastes collection arrangement through its sub-

    contractor and ten vegetable wastes is delivered at the plant site. The biogas generated is used as

    fuel in gas engine and the excess power generated is exported to TNEB grid. The dewatered cake

    is sold / used as manure by CMDA.

    The Wholesale Market Complex generates up to 100 tonnes of garbage a day of which 30 tonnes

    of garbage suitable for power generation is segregated. Just 1% each of flower, fruit and

    vegetable waste is required to provide non-fibrous green waste that could be disintegrated into

    smaller pieces. This would be ‘digested’ in a plant that would produce methane from the waste

    and the gas operates an

    engine to produce power.

  • 8/19/2019 WASTE Final 25th Nov

    49/75

     

    44 

    A NEWS PUBLISHED IN TIMES OF INDIA DATED 26-05-2010. 

  • 8/19/2019 WASTE Final 25th Nov

    50/75

     

    45 

  • 8/19/2019 WASTE Final 25th Nov

    51/75

     

    46 

    20. Study Area

    Location: APMC VEGETABLE Market Vashi, Navi Mumbai, Maharashtra

    State, India.

    Vashi is a residential as well as commercial node in Navi Mumbai, one of the first nodes

    developed by City and Industrial Development Corporation (CIDCO). Vashi is divided into

    many sectors of which Sector-1 to sector-8 is known for its fully residential buildings. Sector-17

    is known for its shopping areas. A large APMC market, the biggest in Asia for wholesale

    agricultural produce, is located in Sector-19 and part of Sector-18.

    Vashi is also environmental friendly due to NMMC initiative of planting trees on both sides of

    the roads in majority of its places and also every node has its own parks and play grounds.

  • 8/19/2019 WASTE Final 25th Nov

    52/75

     

    47 

    Climate

    Coordinates: 19.08°N 73.01°E

    Being in close proximity to the sea, Vashi is mostly humid and hot in summer and mildly

     pleasant during the winter months of November, December, and January. Western Ghats run in

     parallel along the east of the town, resulting in relatively heavier showers than Mumbai.

    Vashi has a tropical climate. In most months of the year, there is significant rainfall in Vashi.

    There is only a short dry season and it is not very effective. The Köppen-Geiger climate

    classification is Am. The average annual temperature in Vashi is 26.9 °C. The average annual

    rainfall is 2793 mm.

    http://tools.wmflabs.org/geohack/geohack.php?pagename=Vashi&params=19.08_N_73.01_E_type:city(600000)_region:IN-MHhttp://tools.wmflabs.org/geohack/geohack.php?pagename=Vashi&params=19.08_N_73.01_E_type:city(600000)_region:IN-MH

  • 8/19/2019 WASTE Final 25th Nov

    53/75

     

    48 

    21. Profile of APMC Market

    Spread over a sprawling 122 hectares, the Mumbai Agricultural Produce Market Committee at

    Vashi is entry point of all food grains and vegetables meant for the extended region of

    Metropolitan Mumbai.

    Divided into different separate sections on the basis of the commodit ies, the

    APMC provides separate markets for Fruits , Vegetables, sugar, jaggery and

    onion-potato market .

    The APMC market at Navi Mumbai is one of the biggest agricultural markets

    in Asia and has given a unique identity to the city Every day, nearly 1,800 tonnes of

    vegetables serving Mumbai, Thane and Navi Mumbai  —   roll into the yard from vegetable

     producing areas like Nashik, Pune, Satara, Sangli and other parts of Maharashtra as well as from

    outside the state.

  • 8/19/2019 WASTE Final 25th Nov

    54/75

     

    49 

    22. Research Methodology

    The study is based on mainly on primary data collected from APMC office. The data also

    included secondary data from annual reports published by APMC.

    Table 

    Year Arrival (MT) Waste (MT)

    2011-12 499487 16231

    2012-13 570121 18527

    2013-14 595164 19345

    Arrivals and waste during Year 2011-2014(in Metric Tons-MT)

    Average of 50-60 Metric Tonne of ORGANIC waste per day is generated.

    90% of the waste is rotten, broken, vegetables,

    leafs and negligible quantity of plastic.

    APMC had outsourced day to day collection

    and disposal of garbage.

    Accordingly, market yards are cleaned and

    maintained on daily basis.

  • 8/19/2019 WASTE Final 25th Nov

    55/75

     

    50 

    Waste is dumped outside each unit. Daily about 5 to 6 times the wheel loader will lift the

    vegetable waste to compacter. The compacter carry the waste to Turbhe Land fill Area. The

    waste is dumped in Turbhe Land fill site.

  • 8/19/2019 WASTE Final 25th Nov

    56/75

     

    51 

    23. Proposals for effective management of waste generated in APMC, VASHI. 

    Major Composting Methods are listed here:

    1. Open pile/static pile aerated or

    non aerated composting time 8-10

    months. Often practiced in rural areas

    and large farm sites. It is a carrier of

    weed seeds; the quality of compost is

    also poor due to high oxidation losses

    and wash out of nutrients.

    2. Pit method [Bangalore method]:

    It is a partial anaerobic and aerobic

    combination.

    Composting time 6-9 months. It is a carrier

    of pathogens and weed seeds.

    The quality of compost is superior than open

     pile method.

  • 8/19/2019 WASTE Final 25th Nov

    57/75

     

    52 

    3. Trenching method had been practiced by several

    municipal bodies in the past, it leads to ground water

    contamination. It gives immature compost and it is time

    and space consuming process & no control over

     parameters. 

    4. Anaerobic digestion is Like “Gobar gas” or Biomethanation system. The digested slurry

    can carry pathogens, hence it requires re-composting to achieve thermophilic temperature of>600 C to kill pathogens. In Overseas the digested slurry is used directly on farms. This is

     because the project operates

    on pure waste stream like

    dairy cattle dung or fruit

     pulp. This process has the

     problem of waste water

    discharge and also it

    requires large quantity of

    fresh water for the process.

  • 8/19/2019 WASTE Final 25th Nov

    58/75

     

    53 

    5. Windrow Composting: This is

    the maximum practiced option. Rapid

    decomposition of O.M. is achieved within

    4-6 weeks. The controlled acceleration of

    the process and fast sanitization of waste

    is achieved to kill pathogens and

    inactivation of weed seeds at 60 to 650C

    [thermophilic phase]. During monsoon the

    windrows can be made under shade to

    minimisenutrient wash outs. The entire

    waste stacking has to be done on

    cemented platform.

    6. Enclosed hall composting: This is like windrows method, but entire waste stacking is in

    the closed hall and aeration is carried out by overhead rail moving mechanism or also by front

    end loaders and windrow turning machines. This system is practiced in Europe with great

    success. This method needs high capital cost and Operation & Maintenance expenses.

  • 8/19/2019 WASTE Final 25th Nov

    59/75

     

    54 

    7. Three side wall cell composting with air suction system [like VAR in Netherlands]. This

    requires higher capital cost [4-6times than windrow method] and Operation & Maintenance

    expenses are Rs.1, 000 to Rs.1, 500 / MT of MSW.

    8. Rotating drum composting: This was the most adapted system in Europe under the

     process of DANO and in Sweden by Rhondeco. It

     bio-stabilizes the waste quickly for further curing in

    the windrows. High electricity consuming and

    capital cost oriented. In this method several

    rotating drums of 30m length & 4 m diameter are

    required to fill waste and bio-stabilize.

    9. In vessel/Bioreactor/closed box

    composting: These systems are

    mostly practiced in Europe, Germany,

    France, Canada, where low

    temperature conditions and presence of

    highly put rescible waste like meat,

     beef, fish makes processing difficult.

    The capital costs as well as operating

    costs are 8 to 10 times higher than the

    windrow method. These methods are

    ideal for places where no space is

    available and higher tipping fee is

     possible.

  • 8/19/2019 WASTE Final 25th Nov

    60/75

     

    55 

    10. Floor to floor dropping [Tumbled down] of waste after 4 to 5 days retention time

    for biostabilisation also called Jersey [John Thompson] and Kneer [BAV] system have been

    attempted in Europe and some Asian countries with low degree of success.

    11. Bio dynamic preparations [also known as

     New Zealand technique] is basically on farm

    composting or multiplication of micro-organisms using

    cow horn, dung, urine and plant extracts. It has not

    succeeded anywhere to salvage MSW problem.

    12. Kyusei Nature Farming Technique  based on the work of Teruo Higa of Agril.

    College Ryukyus Japan involving effective micro-organisms[EM] since 1990, has been of use at

    mixed farm level to convert crop residue with poultry waste into partial compost called

    “Bokashi” and then used for crop  growing.. The EM

    solutions have been tested in Municipal Wastes with

    limited success due to predominance of heavy pathogen

    load which the weak bio culture cannot overpower so

    easily.

    The photosynthesis bacteria and yeast have very little

    role in breaking down complex substances of lipolytic,

    lignitic & proteolitic contents which causes foul smell

    and gaseous emissions.

  • 8/19/2019 WASTE Final 25th Nov

    61/75

     

    56 

    13. Vermiculture: This method of composting has been widely practiced at orchard level, on

    farm, and small scale decentralized community composting. It is cost effective as long as source

    segregated food-veg waste is available and family labour is used.

    Major costs and efforts are involved in

    creating the tree shade chopping the

    waste and day to day watering.

    Compost cannot be taken into

    regulated cycles as it is mixed with

    inner layer of soils where the

    earthworm makes the burrows.

    Thus the definite specification for

    determining the compost quality are

    difficult. On large scale municipal

    waste [MCGB Bombay] project did

    not succeed.

  • 8/19/2019 WASTE Final 25th Nov

    62/75

     

    57 

    Composting

    Composting is controlled aerobic process carried out by successive populations of micro

    organisms (bacteria - fungi - actinomycetes) leading to development of mesophilic (40-450 C)

    and thermophilic (60-650 C) temperatures and production of carbon dioxide, minerals, organic

    substrate, energy and H2O.

    This is by far the most widely used method for processing of MSW in fruitful manner.

    Composting has relevance for MSW treatment as it results in volume reduction of up to 50% and

    consumes environment problem causing component of MSW.

    This process breaks down short term biodegradables food residue, fruits vegetables, animal

    tissue etc., but does not bring appreciable changes into long term biodegradable materials like

    tree prunes, coconut shells etc.

  • 8/19/2019 WASTE Final 25th Nov

    63/75

     

    58 

    In the composting technology either of the two basic systems are used i.e. treatment of MSW

    through open windrows which are aerated by turning the waste upside-down or forced air. The

    other system is “in –  vessel” (closed reactor system) such as rotating drums, tunnel etc. in which

    mixing, agitation, aerations are done combinely.

  • 8/19/2019 WASTE Final 25th Nov

    64/75

     

    59 

    Key features and requirements of composting as technology for MSW

    treatment

    1. Highly suitable to deal with putrescible fraction of MSW that causes several problem

    regarding environment, health, water contamination, mal-odors etc.

    2. Consumes wide variety of organic materials waste streams.

    3. It can tolerate presence of silt and soil to a great extent.

    4. Flexibility of technology for implementation in 50 to 1000 tpd modules

    5. More than 80% of the facility and >50% of the machinery is usable for integration with other

    technologies like fuel palletization.

    6. Can treat and process even one week old waste or some quantity of accumulated wastes?

    7. Composting is extremely useful in minimizing the burden of methane and leachate generation

    from SLF.

    8. Entire system is indigenous with local availability of spares and expertise.

    9. It is first significant step towards scientific management of MSW.

    10. It can form the basis for implementation of other high Tech Process if found suitable in the

    future.

  • 8/19/2019 WASTE Final 25th Nov

    65/75

     

    60 

    11. It is an integral part of SLF all over the World.

    12. Returns back the nutrient elements and carbon energy to the farmer’s fields.

  • 8/19/2019 WASTE Final 25th Nov

    66/75

     

    61 

    24. REFUSE DERIVED FUEL (RDF) / Fuel Pelletisation

    RDF defined: An undensified product manufactured from the combustible fraction of waste by a

    sophisticated mechanical process involving the deliberate use of heat, having a granularity of at

    least 90% less than 10 mm and containing no more than 15% ash prior to any addition of

    substances to enhance fuel properties.

    Global

    trend

    indicates constantly increasing quantities of dry recyclable in the MSW that are combustible. In

    most of the million plus cities the content of paper, jute, broken furniture, tree twigs, textiles,

     plastic etc is between 20 to 30%.

    These wastes have moisture content of < 20% and calorific value of >2000Kcal /Kg. overall bulk

    density of this waste is 200 to 300 Kg / M3.

    Hence if disposed off in the SLF they can occupy almost 4 times more area than other wastes.

    Recovery of these recyclables is considered a good source of energy.

  • 8/19/2019 WASTE Final 25th Nov

    67/75

     

    62 

    Key features / requirements of fuel palletization (RDF)

    1. MSW should have 20-30 % materials which can

    have calorific value >2000 Kcal/Kg. this happens with

    increased quantity of paper waste & woody materials.

    2. The dry recyclables have to be protected from

    scavenging activity

    3. Paper, textiles, LDPE, HDPE, diapers, sanitary

    napkins, and rags can become part of RDF. In developed countries even dried sewage sludge is

    used in RDF.

    4. Chlorinated Hydro carbons and PVC must not be present in the MSW & RDF.

    5. Facility for recovery of only RDF usually suffers from the ill-effects of putrescible wastes

    having high moisture content (>50%) and low calorific value (

  • 8/19/2019 WASTE Final 25th Nov

    68/75

     

    63 

    hulls, saw dust, crop straw must be available in the vicinity of the project as ‘made to order’

    supply of MSW on every day basis is difficult.

    8. Utilisability of RDF / FP is possible in steel foundries, potteries, cement kiln, and those

    industries which have coal fed boilers. This market potential has to be explored within affordable

    transportation distance.

    9. Like composting, RDF will require large shed for processing as well a more godown storage

    for finished product.

    10. Loose storage of fluffy material is a problem from the space as well as fire hazard point of

    view. This requires extra precautionary measures.

  • 8/19/2019 WASTE Final 25th Nov

    69/75

     

    64 

    25. Gasification as technology for MSW treatment

    Uses a limited amount of heat for waste combustion. The further heat produced results in

    complete decomposition of organic materials to gaseous fuels (H2, Co, Co2, CHx etc.) or low

    calorific value but usable for power generation.

  • 8/19/2019 WASTE Final 25th Nov

    70/75

     

    65 

    26. Biomethanation / Anaerobic Digestion as technology for MSW treatment

    Organic fraction of the wastes is segregated and fed to closed container / anaerobic digester /

    vessel. In the absence of oxygen (air) natural bacteria produce methane rich gas consisting of

    approx 60 - 64% methane, 35 - 40% Carbon dioxide and small amount of ammonia and

    hydrogen sulfide. Biogas has a calorific value of about 5000 kcal / m3. Depending upon the

    waste, Production ranges from 50 to 150 m3 per tonne of waste. The biogas can be used for

    heating applications and generation of electricity through internal combustion engines, low

     pressure gas turbine or steam turbines.

  • 8/19/2019 WASTE Final 25th Nov

    71/75

     

    66 

    The sludge from anaerobic digestion requires to be de-watered and pass through a thermophilic

    aerobic bio composting cycle before it is used in agriculture. Use of post-bio methane slurry in

    its

    dry form is as good as spent tea which cannot provide ready carbohydrates energy to

    microorganisms. For making it useful, further mixing of blood meal, oilcakes etc. is required

    followed by composting process for 3 weeks. This technology is age old and proven for

    utilization of high volatile solid content homogeneous waste streams such as dairy cattle dung,

     poultry dropping, fruit pulp, vegetable market waste, slaughter house and sewage sludge.

  • 8/19/2019 WASTE Final 25th Nov

    72/75

     

    67 

    27. Salient features of biomethanation technology

    1. MSW should have 50% wet waste comprising of food residues, fruit vegetables market waste,

    lawn pruning. More the starchy material, better it is.

    2. The volatile solid content should not be less than 50%

    3. The waste should not be older than 24 hours as there is methane loss in high temp conditions

    4. Large quantity of potable quality water should be available

    5. While methane gas can be converted into electricity and readily sold, compost requires similar

    marketing efforts as that of a normal composting project.

    6. Project cannot be established on reclaimed dumpsite due to very heavy structure of

    methanation towers.

    7. Potential risk of methane gas, explosion and danger in nearby residential areas.

  • 8/19/2019 WASTE Final 25th Nov

    73/75

     

    68 

    28. Vermiculture

    This involves use of earthworms to eat and digest organic matter content of waste. The waste of

    desired quality must be chopped into 10-15cm size and put layer by layer in specially prepared

    soil bed like field nursery. The area must have shade. Earth worm cocoons containing vermi

    compost is spread on to these waste layers. These cocoons develop into adult size worms and

    nibble the waste. Granulated material passing through the worm’s digestive system is harvested

    and used as soil conditioner.

    The process of Vermiculture is best suited to the isolated locations having 1 to 5 tpd waste and

    have sufficient horticulture / plantation area with sprinkler irrigation facility.

    In cities it can be practiced through community composting of food waste.

    It require large number labour force usually 6 to 8 per tonne of MSW. This makes it an unviable

     proposition on commercial scale

  • 8/19/2019 WASTE Final 25th Nov

    74/75

     

    69 

    29. CONCLUSION

    Major amount of waste generated in solid waste of Navi Mumbai is organic waste generated

    from APMC market. By treating the organic waste there is reduction of major quantum of load in

    land fill area.

    Organic waste generated in APMC market if used for energy generation not only saves the

    transportation cost also benefits environment.

    Set up of small scale industries to convert organic waste into organic manure will generate

    employment in and around Navi Mumbai area.

    Green house emissions and ammonia emissions are reduced as cause of these emissions are due

    to these biodegradable wastes.

    With proper utilization of the waste APMC market can become zero energy building.

    By product of energy generation i.e. organic fertilizer can be sold to the farmers at subsidised

    rates there by creating awareness to use organic manure instead of chemical fertilizer.

    Well organised Waste management will help to make Navi Mumbai Smart City.

  • 8/19/2019 WASTE Final 25th Nov

    75/75

     

    30. REFERENCES

    1. www.ccsniam.gov.in

    2. www.isca.in

    3. www.agico.com

    5. www.adelaide.edu.au/biogas/history

    4. www.excelind.co.in

    5. www.mailhem.com

    6. www.biostarsystems.com

    7. http://practicalaction.org/

    8. www.researchgate.net

    8. mgiri.org/wp-content/uploads/2014/05/Energy_Technology.pdf

    9. Biogas Generation in a Vegetable Waste Anaerobic Digester: An Analytical

    Approach,Dhanalakshmi Sridevi V.and Ramanujam R.A.,Department of Chemistry, GKM

    College of Engineering and Technology, Chennai –  63,

    TN, INDIA.

    10. Environment Technology Division, (CLRI), Council of Scientific and Industrial Research

    (CSIR), Adyar, Chennai, INDIA (2012).

    11. Wikipedia

    12. Google maps

    13. NMMC REPORT from NMMC website

    14. CIDCO website

    http://www.ccsniam.gov.in/http://www.isca.in/http://www.agico.com/http://www.excelind.co.in/http://www.biostarsystems.com/http://practicalaction.org/http://practicalaction.org/http://www.biostarsystems.com/http://www.excelind.co.in/http://www.agico.com/http://www.isca.in/http://www.ccsniam.gov.in/