Percolate biology physical and chemical treatment device of municipal solid waste landfill

Abstract

The invention provides a percolate biology physical and chemical treatment device of a municipal solid waste landfill, which comprises an improved anaerobic adjusting tank, a recirculation area, an aged refuse reactor, a high-grade oxidation pond, a high-grade adsorption and sedimentation tank, an artificial wet land and an ecological landscape treating pond, wherein the improved anaerobic adjusting tank pretreats percolate; the recirculation area is connected with the improved anaerobic adjusting tank and further treats the percolate; the aged refuse reactor is connected with the recirculation area and adsorbs and degrades the percolate; the high-grade oxidation pond is connected with the aged refuse reactor, and the percolate is reacted chemically in the high-grade oxidation pond; the high-grade adsorption and sedimentation tank is connected with the high-grade oxidation pond, and activated carbon is arranged in the high-grade adsorption and sedimentation tank to adsorb sediment in the percolate; the artificial wet land is connected with the high-grade adsorption and sedimentation tank and further treats the percolate in a biological method; and the ecological landscape treating pond is connected with the artificial wet land and further treats the percolate.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to the treatment of leachate from high-concentration domestic garbage landfills. Background technique [0002] Landfill leachate is a secondary pollutant associated with landfills, which mainly comes from precipitation and the water contained in the garbage itself. There are many physical factors, chemical factors and biological factors in the process of liquid flow that may affect the properties of leachate, such as: garbage composition properties, landfill structure, landfill method, age of landfill, rainfall and rainwater The impact of runoff, landfill time, landfill method, and landfill surface conditions; therefore, the properties of leachate vary within a considerable range. [0003] According to the operating data of multiple domestic garbage sanitary landfills, the main characteristics of leachate are: [0004] ① There are many types of pollutants and high con...

AI Technical Summary

Problems solved by technology

[0005] ②Water quality and quantity fluctuate greatly;

[0006] ③High concentration of ammonia nitrogen (generally higher than 1500mg / L)

These processes all have the following problems: ①The front-end treatment consumes a lot of energy; ②The end-end advanced treatment adopts membrane treatment technology, which makes it difficult to treat the concentrate

Therefore, the cost of leachate treatment is high. For small and medium domestic waste sanitary landfills, the cost of leachate treatment has greatly increased the cost of landfill treatment.

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