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Quezon City Solid Waste Disposal Facility (Payatas Controlled Dumpsite)

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Quality Disposal Facility for Quality Community
Managed and Operated by:
Office of the City Mayor
Payatas Operations Group
Quezon City, Philippines
Tel. Nos. : (02) 427-8218
(02)-427-8443
Telefax: (02) 427-7363

General Contractor: IPM Environmental Services, Inc.


Present Condition

Active Disposal Facility

Area - 9.70 Ha.
Waste Intake - 7,000 cum./day
Average Wt. - 1,402 TPD
Per Capita Generation - .550kg./P/D
Waste Density - 210 Kg./Cum.
Average Daily Truck Trips - 500 trips/day

Payatas Controlled Dump Facility

The conversion of the Payatas Dumpsite into a Controlled Dump Facility includes Engineering Works Program (EWP), Social Responsibility Program (SRP), and Operation and Management of the disposal facility with following objectives:

* Compliance with R.A. 9003
* To extend the life of the disposal facility for another 2 1/2 years at the least
* To ensure safety of the people living near the dumpsite and eliminate the risk of another trash slide
* To provide livelihood opportunity to Payatas residents.

General Plan

1.Conversion to Control Dump Facility
Slope Stability – Re profiling to attain the side slope of 1:2.5
Leachate Collection & Treatment
Storm Waste Drain (Drainage System)
Top Soil Covering
Methane Gas to Power Generation
Material Recovery and Waste Volume Reduction Plant

 

2. Dump Site Operation

 

3. Social Engineering

 

4. Final Option

The Conversion Project is being implemented by IPM Environmental Services, Inc. (IPM-ESI) as the General Contractor and Sinclair Knight Merts as Consultant. The project covers the active and the inactive dumpsite having a combine land area of about 20 hectares.

Engineering Works Program

Slope Re-profiling - The 60-70 degrees side slopes of the dumpsite is re-profiled to 23-25 degrees or a slope ratio of about 1:2.5 and then covered with soil to ensure slope stability. Side cutting or berms are also constructed every 10 meters (slope-length) to minimize erosion and slope failure.

Leachate Collection and Re-circulation - The construction of peripheral leachate and then re-circulated or pumped onto the soil capped mounds to effect the growth of grass. Leachate re-circulation also helps to enhance decomposition and minimizes the discharge of leachate into the waterways.

Storm Water Drain – Construction of drainage canals along the periphery of the dumpsites serves as drainage system in the area also acts as catch basin for surface water runoff from the dumpsites.

Access Roads – The construction of all-weather access roads around the dumpsites facilitate: daily waste dumping, de-clogging operations, maintenance of slopes, and for emergency.

Social Responsibility Program

The SR program includes:
1. Institute strengthening of existing workers’ organization;
2. Assistance in terms of access to basic services;
3. Establishment of Materials Recovery and Waste Volume Reduction Plant (MRWVRP);
4. Market Development
5. Vocational Training; and
6. Enhancement of Emergency Response Term.

Payatas Gas to Power Generation

Methane gas is a natural by-product of decay and decomposition at dumpsites. Unless manage well, it poses real health and safety hazards to people living and working in the immediate vicinity of the dumpsites.

“Spontaneous combustion and fires are the common results of improper management of methane gas”.

The PCDF has gone one step further than merely managing methane gas: it has brought in the technological assistance of the Philippine National Oil Corporation (PNOC) for the possible utilization of methane gas at the dumpsites as a secondary power source for the facility as well as the community through the construction of a landfill/dumpsite gas (LFG/DG) collection system.

The Philippine Biosciences Company (PhilBLO), a private contractor engaged in biogas technology, supplied the 100 kilowatt generator set and installed the methane gas collection system at the facility, mainly using moisture traps as gas buffers. The IPM-ESI has installed streetlights from the dumpsite to the POG office. It is estimated that the current level of methane gas at the dumpsite could supply the power need of the facility over the next 10 years.

 
Tire Retrieval Project

Another component of the conversion project is the continuing search for an economically advantageous and environment friendly method for the disposal of used tires.

Towards this end, the Quezon City government tapped the services of Union Cement Corporation (UCC) for the processing of retrieved and/or collected used tires using Cement Kiln Co-processing technology.

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Written by tuklasinnatin

July 8, 2011 at 7:57 am

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