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LANDFILL (GAS RECOVERY (Phase 1 : initial adjustment, Phase 2 : transition…
LANDFILL
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GAS RECOVERY
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Chemical reaction created by the reactions of certain chemicals present in waste. If chlorine bleaches contact with ammonia, a harmful gas is produced
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Volatilization created when certain wastes particularly organic compounds, change from a liquid or a solid into a vapour
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Bacteria decomposition occurs in five phases and the composition of the gas changes during each phases
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TRENCH METHOD
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Trenches are usually lined with synthetic membrane liners or low permeability clay or combination of 2 to limit the movement of both landfill gas and leachate.
Typically, cells are excavated to the depths 1 to 3 m, with slope of 2:1 or 3:1
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GROUNDWATER MONITORING
The landfill received primarily paper waste and construction debris, but it also received asbestos, sewage, and catch tank liquid waste
Groundwater monitoring results indicate the SWL has contaminated groundwater with volatile organic compounds and possibly metals at levels that exceed regulatory limits.
Early detection of contaminants in groundwater released from landfill sites helps facilitate timely and effective source control and mitigation
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