Case study of a municipal municipal solid waste leachate treatment project

2022-08-24

　　Project name: A city of domestic garbage leachate standard treatment project case

　　Project scale: 150 tons/day

　　Sewage type: landfill leachate

　　Project background:

　　The domestic waste landfill leachate treatment station adopts the "two-stage dish tube type" (DTRO) reverse osmosis process, the design processing capacity is 150 tons/day, the concentrated liquid is returned to the reservoir area, and the discharge standard after leachate treatment is implemented in the "domestic waste Landfill Pollution Control Standard" (GB16889-2008).。At present, the existing sewage treatment station facilities can not meet the standard treatment of the leachate produced at present, resulting in the shortage of emergency pool storage capacity, and part of the sewage needs to be transported and disposed of。

　　If the landfill leachate is discharged directly into the water body without treatment, it will cause serious eutrophication to the surrounding water body, seriously destroy the self-purification ability of the water body, cause the water body to become black and smelly, and affect the environment and agricultural irrigation。Leitryder landfill leachate treatment, high quality landfill leachate treatment, widely recognized by users。

　　User requirement

　　1, sewage standard discharge。In particular, the strict control indicators of COD, ammonia nitrogen, total nitrogen and total phosphorus are better than the requirements of relevant national emission standards。

　　2. The operation cost of sewage treatment facilities is reasonable。

　　3, sewage station facilities, equipment operation is simple, less human resources investment, daily maintenance is simple and convenient。

　　Process characteristics of leachate treatment in Letterrider

　　1, combined equipment: modular, small footprint, fast construction, collaborative removal of carbon, nitrogen efficiency。

　　2, the traditional process has two core contradictions: alkalinity and organic matter (carbon source) imbalance。These two core contradictions directly lead to the problems of low efficiency of nitrogen and phosphorus removal, poor system stability and high operating costs in the traditional processing process。

　　3, with wastewater nitrogen and phosphorus removal, carbon source and alkalinity balance function system。

　　4, with circulation power self-balance function。

　　5, carbon source, alkalinity and biological nitrogen removal energy efficiency balance system。