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Sanitary landfill for municipal solid wastes
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The Sanitary Landfill caters for the disposal of municipal
solid waste from the city of Kuching and surrounding areas. The
landfill will be constructed and re-cultivated in 8 stages, cell
by cell, thus keeping the open tipping areas comparatively small
at all times.
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| Features and Specifications |
The primary target of modern landfill design is to minimize or
eliminate adverse environmental impacts arising from the dispoal
of solid municipal waste which typically contains a wide range of
pollutants.
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To avoid any leaching of pollutants into the groundwater, the
landfill is constructed with a multi-layer base sealing system,
comprising of a highly impermeable sealing layer using the latest
environmental protection material, covered by geotextile and a drainage
and filtration layer to ensure undisturbed flow of the leachate
water into the embedded leachate collection pipes, at all times.
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The leachate from the sanitary landfill is collected through an
extensive network of pipes, then pumped to the Leachate & Water
Treatment Plant. There, all leachate is treated in a multi-stage
process including biological treatment, clarifiers and activated
carbon reactor as final polishing stage to ensure highest treatment
results. The plant is fully computerized and all stages of the treatment
process are continuously monitored; the water effectively has drinking
water quality when being discharged.
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Landfill gas consists mainly of methane and is not only poisonous
but also contributing greatly to the greenhouse effect. The landfill
gas at this sanitary landfill is extracted and collected through
a web of gas collection pipes in various levels of the landfill
body. In the initial stages the gas is pre-treated and flared off
for neutralization; once sufficient amounts of gas are generated,
the gas extracted will be used for power generation which will further
contribute to the conservation of natural resources, of the main
objectives of the overall facilities design and operations
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