Sanitation Initiatives of Muntinlupa City by Jet Pabilonia

Luzon Sanitation SummitMUNTINLUPA CITY

April 23, 2008

MUNTINLUPA CITY

The SOUTHERN GATEWAY to

Metro Manila & CALABARZON

PROFILE• Area: 46.7 square kms.

• Nine barangays

• Population: 420,000

• Classified as a Highly Urbanized City

• Residential/Commercial/Light to Medium Industry

• No. Of Households: 78,016 (370,333)

• No. of Business Establishments: 9,000+

• Population concentrated at the eastern portion (lakeshore area)

• No. of densely populated areas (depressed areas):184

• No. of subdivision/villages: 80

• Sewered Area: 1) Brgy. Ayala Alabang (19,644 HH); 2) Filinvest Corporate Area

LAGUNA LAKE

TOTAL LAKE AREA: +90,000 HAS.(City of Muntinlupa = +5,900 HAS.)

* AQUACULTURE* NAVIGATION* DOMESTIC H2O SUPPLY - Ayala Alabang Village - 300 MLD (Proposed)

SANITATION SITUATION

• Toilet & Septic Tanks: 60,000+ HHs & establishments (80%)

• Sewerage Coverage: 20,000 HHs & establishment (15%): Ayala Alabang & Filinvest area

• Improper Sanitation System (w/ toilet but direct discharge) (5%): mostly in depressed areas & informal settlements along the lake

ISSUES

• Only 2 areas in the Muntinlupa City is “sewered”• Major sources of pollution = domestic (70%)• Majority of households rely on septic tank system

– 1) Improperly designed (undersized)– 2) Poorly Maintained - “free flow”– 3) Obsolete design - w/ leaching chamber or open

bottom

• Water Utility Service (Maynilad) - No service in sewerage

• Groundwater = main source of domestic water

PROBLEMS

• Polluted water bodies: SW & untreated sewage• Groundwater contamination• Diarrhea cases: prevalent along the lakeshore

area & depressed areas• Land subsidence

PRE CWA STRATEGIES• Lake Ecosystem Rehabilitation and Protection

– Bantay Lawa/Lake Guards– Quarterly Lake Seeding– Paliko Creek Constructed Wetland Project (up to FS stage)

• River Rehabilitation Program– Sagip Ilog/Environmental Armies– Trash Interceptor System– Fencing/Declogging/De-silting Projects– Treeplanting

• Shore Land Development– Shore Land Tree Planting/Wetland Area Restoration

– Shore Land Rehabilitation and Development

• Enforcement/Legislation– City Ordinance No. 02-070

CITY ORDINANCE # 02-070

Prohibiting any person to discharge or disposeany untreated wastewater, sludge, oil, chemical,

or other waste to any part of the City ofMuntinlupa that will endanger the environmental

condition of the the City’s lake, rivers, creeks,and waterways with the corresponding

penalties thereof

POST CWA STRATEGIES• Enforcement/Legislation

– City Ordinance No. 04-020– City Ordinance No. 05-037

• LINAW Project– Infrastructure: Public Market WWTP– Social Marketing Information Education Campaign– Replication of Infrastructure to other facilities– Septage Management

• Established a Water Laboratory• Continuous “Free Drinking Water” Project (since 1995)

CITY ORDINANCE # 04-020

Regulating the abstraction of groundwater from its natural source within the

City of Muntinlupa with the corresponding penalties thereof

CITY ORDINANCE # 05-037

City ordinance & regulating the operationsof all water refilling station, seller, bulk waterdelivery tankers & other water establishment

for public consumption and the corresponding penalties thereof

LINAW PROJECTLocal Initiatives for Affordable Wastewater treatment Project

RATIONALE

• The Clean Water Act requires that within 5 years, all subdivisions, condominiums, commercial centers, hotels, hospitals, market places, and public buildings be connected to a sewerage system. In the draft law, LGUs are required to play a significant role

• 1/3 of illness due to water borne diseases, 18 deaths per day;

• Annual economic cost $1.3 Billion (overall)

LINAW APPROACH

• Involve stakeholders• Use social marketing• Promote appropriate technologies• Promote user fees for full cost recovery

OBJECTIVES

• Develop wastewater and sanitation action plans through a participatory stakeholder process, including the identification of short, medium and long term strategies;

• Implement incremental steps for low-cost technology solutions to address site-specific sanitation and wastewater management problems;

• Develop and implement a public awareness campaign regarding sanitation and wastewater problems, management issues, and technology and financing options;

• Build the capacity of LGU staff on designing low-cost wastewater treatment systems, packaging projects for funding, and developing public information campaigns.

SOLUTIONS

• Rapid Interventions– Wastewater treatment

system for the Muntinlupa Public Market (being manage by the CGM)

– IEC Program

– Incorporation of a community sanitation center & wastewater management design in at least two communities

• Long-Term Projects– IEC Program

– Wastewater treatment system (communal/ clustered systems) for other densely populated areas & other city development areas

– Development of a septage management system for the City of Muntinlupa

Public Markets Generate High-Strength Wastewater

Public Markets generate wastewater from:

• “Wet section” stalls – meat, fish, poultry

• Produce sales

• Public restrooms

• Prepared food area

Pre-treatment devices including screens & grease traps needed to protect treatment plant

Project Info

• Flow: 210 cu. meters/day• Stalls: 1445 wet and dry• Influent: 600 mg/l+ BOD• Effluent discharge: 15 mg/l

BOD (Class “C” limit + 50mg/l)• Area: 160 sq. m (underground)• Timeframe: 7 months

construction; operation started February 2006

Muntinlupa Public Market

Technology Selection

High cost and couldn’t keep parking lot

150 sq. meters$700$200,000Trickling Filter

High cost and couldn’t keep parking lot

150 sq. meters$700$200,000Activated Sludge

Too large1500 sq. meters$175$120,000Constructed Wetlands

Too large2000 sq. meters$175$80,000Lagoon

Selected150 sq. meters$500$140,000ABR/SBR Hybrid

RemarksLand

RequirementsO&M/MonthCapital CostTechnology

Plant Layout Schematic

TOILETS

WETSECTION OF

MARKET & FOOD AREA

ANAEROBIC BAFFLEDREACTOR + UPFLOW

FILTER

CLARIFIER

DISINFECTIONCHAMBER

MULTI-MEDIAFILTER

RE-USE* StreetCleaning* Fire* Toilets

DISCHARGE(Alabang River/Laguna Lake)

AERATIONTANK(SBR)

COCOPEAT BIOFILTER

IRRIGATION/PLANT BOX

Treatment Components* Raw wastewater pumping

* Anaerobic Baffled Reactor

* Sequencing Batch Reactor

* Media Filtration System

* Chlorine Contact and Reuse System

* Coco-Based Media Filtration System (side project: 3 cu. m.)

Anaerobic Treatment Process

Anaerobic Baffled Reactor

Advantages: Small footprint, no electricity required, relatively low cost and easy to operate and maintain.

Influent and Effluent Baffles and Flow Control Structures

Treatment Process

RAW WASTEWATER PUMPING ANAEROBIC BAFFLED REACTOR

SBR AERATION RECLAIMED WATER REUSE

Recycled Water System

• Filtered and disinfected water is pumped to a gravity holding tank then into the urinal/toilet flushing system

• Reclaimed effluent is also used for street washing/plant watering/fire water.

• Using reclaimed water saves on pumping costs and use of potable water obtained from deep wells (50% = Php 525/day = Php 15,750/month)

Coco Based Biofilter Unit

Cocopeat Filtration System•Attached growth process

•Utilizes coco-based material as filter media

• Provides high surface area and is very resilient in wastewater environment

• Timed dosing draws oxygen into the pore spaces, providing aerobic treatment and filtration

• Applicable for home, commercial establishments & resorts

• Modular & low cost

SYSTEM FLOW W/ MODULAR COCO-BASED BIOFILTER UNITSBORACAY SEAVIEW PRIVATE VILLAS

PUMP CHAMBER RAW WASTEWATERBAFFLED REACTOR

(PRIMARY TREATMENT) FROM TOILET/ ALREADY CONSTRUCTED BATH & KITCHEN

INLET PIPE FROM PUMP

BIOFILTER MODULES TO POND & WATER GARDEN4 UNITS (RECYCLED WATER)

(SECONDARY TREATMENT) 2.5 meters

2.5 meters

Project Cost: Public Market WW Treatment Facility

(amounts in thousand pesos)Description CostConcrete Masonry 2,639.0Others 754.0Sub-total Materials 3,393.040% labor 1,357.2

10% tax 339.3Earthworks 266.0

5,355.5

21% 1,124.7 Total Direct costs 6,480.2 Electro mechanical equipment 320.0Total capital outlay 6,800.2 One Year Operating Costs 336.0 Total Costs 7,136.2

Muntinlupa CitySchedule of Operating Expenses: Public Market WW Treatment Facility

(in thousand pesos) 1,000

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Salaries & Electrical Cost 324 324 324 324 324 356 356 356 356 356 Chemicals 2 3 3 3 3 4 4 4 5 5 Desluging cost 10 11 12 13 14 15 17 18 20 21 Total Operating Expenses 336 337 339 340 341 375 377 379 381 383 Assumptions:

1 Salaries and wages are based on LGU figures

2

8.75%

Item

Selected operating expenses will increase yearly by

Full Cost Recovery

• Cost to construct: 6.8 million pesos ($136,000)• Operational costs: 27,000 pesos/month

($6,720/year)• Reuse savings: 15,750 pesos/month

($3,600/year)

User fee structure: 5 pesos ($0.10)/stall/day.

1440 stalls * $0.10/day * 365 days = $52,000/year

Full cost recovery period = 3 years

PROPOSED ADDITIONAL PROJECT SITES• MUNTINLUPA “BAYWALK” PROJECT (Brgy. Bayanan along

the shoreline of Laguna Lake)– Daycare center, Recreational facilities, restaurants, barangay hall,

other commecial establishments.

– City Government Project

– 3 hectares

• MUNTINLUPA CITY-TESDA TRAINING CENTER– Located along the shoreline of Laguna Lake in Barangay Putatan

– City Government Project

– 1 hectare

• MUNTINLUPA SCIENCE & NATIONAL HIGH SCHOOL• “PACWOOD” SITE

– Barangay Tunasan

– Local Government Offices, Motor Pool, Material Recovery Facility (MRF) for Solid Wastes

– 4 hectares

COMMUNICATION & INFORMATION PROGRAM

• 5 YEAR PROGRAM

– Inform

– Educate

– Call Participation/Compliance

• COVERED BASIC ENVIRONMENTAL ISSUES & SANITATION PRACTICES

– Pollution of water resource

– Effect to the health & environment

– Adoption of on-site or decentralized systems

– Proper maintenance of septic tanks

– Septage Management & User Fee (Initial Compliance on CWA)

• TARGETED HOUSEHOLDS & SMEs

• USED DIFFERENT MEDIA (POSTERS/ADS/MALLS TOURS/ COMICS)

SOCIAL MARKETING & INFORMATION/EDUCATION PROGRAM

Integrated Wastewater and Septage Management Program - Organisational Structure

DESLUDGE OPERATION

ZONES 1, 2, 3 and 4 ZONE 5, 6, 7 and 8 ZONE 9, 10, 11 and 12SANITARY SYSTEM INSTALLATION

FEE COLLECTION

CITY SANITARY BUREAU

Muntinlupa City Government

PrivateContractorNo.1

PrivateContractorNo.2

PrivateContractorNo.3

Residences Commercial/Public/Institutional

Industrial

Dept. of Health

Treasury

PROPOSED SEPTAGE MANAGEMENT PROGRAM

Lessons Learned/Conclusions• Interest and replication have

been high because many facilities face the same problems

• Full cost recovery is feasible with low-cost technology and user fees

• Local government leadership and ownership is key

• Important to build support and willingness to pay fees using effective social marketing campaigns thus encouraging stakeholders participation

THANK YOU!

“WORKING TOGETHER FOR A BETTER CITY OF MUNTINLUPA”

Mayor Aldrin L. San Pedro

JET D. PABILONIALINAW - MUNTINLUPA CITYContact: 5430594/8622525

0920-4829369 0917-7392384 jetdp3369@yahoo.com