Sanitary Landfill of Municipal Solid Waste
Technology Introduction
Sanitary landfill technology is the use of the nature of the metabolic function, according to the sanitary landfill engineering technology standards, engineering theory and geotechnical standard, to disposal garbage for landfill and controlling effectively, then to find a safe and stable treatment of municipal solid waste disposal method.
The MSW is filled with one layer of waste and one layer of cover soil alternately, and compacted by compactors so that the MSW could be stable through long-time physical, chemical and biological reactions. Landfill gases (e.g. CH4, CO2, N2,H2S), created by waste decomposition, exhaust through gas tubes buried in advance, which are collected and utilized as fuel or to generate power. The bottom of the landfill is waterproof in case of polluting the undergrounds water. The leachate is collected by collecting pipes and treated together.
Process Flow Chart
Advantages
Simple process, low costs in construction and processing;
Great treatment capacity, and is not affected by the change of waste composition;
The landfill processing equipment is simple, strong adaptability and flexibility;
Compared with other methods, the landfill has the advantages of low invest, low operating cost and recovery of biogas;
The land could be developed properly by afforesting and restoration of ecological environment after landfill closure.
Application Case
One of the municipal solid waste landfill in Yunfu, Guangdong Province
Construction Time: 2012
Type of the solid waste: Municipal solid waste
Landfill capacity: 680,000 m3
The handling capacity of landfill: 200t/d
The handling capacity of leachate: 80t/d
One of the municipal solid waste landfill in Zhaoqing, Guangdong Province
Construction Time: 2014
Type of the solid waste: Municipal solid waste
Landfill capacity: 660,000 m3
The handling capacity of landfill: 100t/d
The handling capacity of leachate: 100t/d
