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The domestic waste landfill in Hegang City, Heilongjiang, will be put into use by membrane technology to treat leachate

2015/01/19 01:59
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According to news from Northeast Net, Hegang, January 19, 2015, recently, the reporter learned from the Sanitation Office of the Municipal Urban Management Bureau that after two years of intensive construction, the domestic waste disposal site in our city has now come to an end and will be put into use soon.

It is understood that the city currently produces more than 1,000 tons of domestic waste, all of which are disposed of in simple landfills. The collected garbage is directly poured into the abandoned open pit without treatment, causing the leachate and fermentation gas in the garbage to seriously pollute the groundwater, urban air and surrounding soil, affecting the normal life and work of nearby residents and units, and endangering The health of citizens also poses potential safety hazards. At the same time, it also makes the urban area face the dilemma of "garbage siege". The introduction of modern municipal solid waste treatment methods is an effective way to solve these problems. At the same time, the Ministry of Housing and Urban-Rural Development has also issued relevant requirements for the harmless treatment of urban garbage in recent years, that is, by 2015, the rate of harmless treatment of urban domestic garbage in the country must reach more than 80%, and a sound urban life must be established. Waste disposal supervision system and mechanism.

The Municipal Party Committee and the Municipal Government attach great importance to the treatment of urban domestic waste. Since 2008, this work has been listed as one of the important livelihood projects. It is planned to build a domestic waste treatment plant in our city and report to the relevant provincial departments for project approval. After site selection, environmental impact assessment, land acquisition, technical research, fund raising and more than two years of construction in the early stage, the current project has a rough scale and will be put into use soon.

The project site is located at the first link of Nanshan Forest Farm on the west side of Heyi Highway, 20 kilometers away from the city center, with a total investment of 167.08 million yuan, an area of ​​24.7 hectares, a total storage capacity of 5.39 million cubic meters, and a construction scale of 950 tons of domestic waste per day. The use period is 10 years, and the vegetation will be restored after 10 years. After the completion of the garbage disposal site, the new anaerobic sanitary landfill method will be adopted, and the double-layer artificial composite anti-seepage technology of high-density polyethylene geomembrane will be used for the bottom layer. The filtrate adopts raw water tank plus acid filtration pretreatment and two-stage reverse osmosis treatment process, and is discharged after reaching the national standard, which solves the problem of landfill leachate polluting groundwater; establishes a drainage and recycling system for the gas generated by landfill and carries out terminal treatment , to solve the problem of garbage fermentation gas polluting the air. The project content includes the construction of garbage collection and removal system, sanitary landfill area, leachate treatment station, management area and related public facilities and related equipment. By the end of December 2014, the project had completed 255,000 cubic meters of landfill dams, more than 1,000 cubic meters of infiltration and drainage systems, more than 122,000 cubic meters of groundwater drainage systems, and excavated and built more than 17,700 cubic meters of flood intercepting ditches. 630,000 square meters of geotextiles were laid, more than 420,000 square meters of geomembranes were laid, more than 354,000 cubic meters of yellow clay in the anti-seepage layer were transported, and more than 354,000 cubic meters of yellow clay in the anti-seepage layer were compacted. The drainage system, anti-seepage system, adjustment pond, flood interception ditch, comprehensive office building, leachate treatment workshop and equipment installation in the landfill area have been completed. After the domestic waste treatment project is put into use, it will produce good social and environmental benefits, and will play a significant role in improving the urban ecological environment of our city.

"Hegang Daily" reporter Sun Pengfei


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