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SOLID WASTE SAMPLINGSOLID WASTE SAMPLING

ReferencesReferences

• Guidance on the Methodology for Waste Composition

Analysis

• Solid Waste Stream Composition Analysis

• Malaysia Standard

MS 1785:2008 – Guide for general planning of waste

sampling

MS 2505:2012 – GUIDELINES FOR SAMPLING OF

HOUSEHOLD SOLID WASTE - COMPOSITION AND

CHARACTERISATION ANALYSIS

MAIN ASPECTSMAIN ASPECTS

1. What are the sampling points?

2. How much sample required?

3. What are the sampling procedure /

report?

Sampling PointSampling Point

• Waste as generated

– Produced from sources (including retained & discarded)

• Waste as discarded

– Placed at collection point to be collected

• Waste as disposed

– Collected from collection point to waste facilities

• Waste as retained

– Not discarded at the collection point & temporarily kept at premises (recycle / reuse)

Sampling PointSampling Point

• Factor taken into account:

– Festival

– Nature (e.g: flood)

– Sampling area:

• Nursery, grocery, caterer, household

Sample RequiredSample Required

http://www.surveysystem.com/sscalc.htm

Sampling ProcedureSampling Procedure

• At household (waste as generated & as discarded)

– Randomly row of houses determined for the waste as generated & waste as discarded in the study area; provided bags for sampling periods (e.g: Sunday to Saturday for 1 week)

• At disposal site (waste as disposed)– Truck load (Full load or Cone & Quarter)

Sampling ProcedureSampling Procedure

0.8 m high

uniformly

waste pile

(without the

bulky item)

Removed two

opposite quarter

& repeat for the

remaining two

quarter until

about 200 kg

Sorting & ReportingSorting & Reporting

• Sorting: weighted 3 times & averaged

• Reporting:

– Able to show waste flow (from generated to

discarded & disposed)

– Show all 15 components of waste composition

– Proposed format for pre-study or any other data

Waste ComponentsWaste Components

15 Waste Compositions:

1) Food/organic waste

2) Papers

3) Tetrapek

4) Plastics film

5) Plastics rigid

6) Napkins

7) Textiles

8) Rubber

9) Leather

10) Wood

11) Garden

12) Glass

13) Metal

14) Household hazardous waste

15) Others

Bulky Waste:

1) Furniture

2) E-waste

3) Garden

4) Other

Properties of wasteProperties of waste

1) Physical

• Density, moisture, size

2) Chemical

• Proximate (Moisture, VM, FC & Ash), Ultimate (C, H, O, N, S & Ash), Energy Content, Calorific Value, C/N Ratio

3) Biological

• Water soluble constitutents, Hemicellulose, Cellulose, Fats, Lignin, Lignocellulose & Proteins

Company

LOGO

ASSIGNMENTASSIGNMENT

1. How much waste you produced in a day?

2. What type of waste and the percentage?

3. Recyclability of the waste?

* 3 hours lecture periods

* For 10% carry marks



3. What are the sampling procedure / report?


Your own waste (no outside, smelly collection)






One rubbish bag (provided)







Sort, weight, analysis, write-up and submit the report







in just 10 minutes (5 min sorting & 5 min writing)







in just 10 minutes (5 min sorting & 5 min writing)

(hardly any effort, no reading, no thinking, no brain

power required, NO MARKS)

1. How much waste you produced in a day?

Value: Too low, too high ???? Differences ????? Reasons ?????? Specific

event/birthday on the sampling day ???

2. What type of waste and the percentage?

Bottle (????)……is that the 16th waste category + few others new waste

categories ?????

Percentage: Any differences with common MSW categories ?????

3. Recyclability of the waste?

Statement: paper, glass, plastic can be recycled….do you even know what

kind of papers, plastics or wastes that can be recycle ??????

Is that kind of waste existed in your sample ?????

Any specific waste in your sample & can it be recycle ?????

Can you possibly achieve 22% recycle rate with your waste ??????

each questions just present more QUESTION MARKS, rather than MARK

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