Garbage leachate treatment system and use method thereof for treating garbage leachate

Abstract

The invention provides a garbage leachate treatment system. The garbage leachate treatment system comprises a water storage unit, a sedimentation unit, a reagent feeding unit, a microbial treatment unit, a drainage unit and a solid-liquid separation unit; the sedimentation unit comprises a constant-current sedimentation tank and a physical chemical sedimentation tank which are sequentially connected; the microbial treatment unit comprises an anaerobic biological treatment device, a micro anoxic biological treatment device and an aerobic biological treatment device which are sequentially connected; and the solid-liquid separation unit comprises a sludge concentration tank, a sludge dewatering machine and a sludge dryer which are sequentially connected. The garbage leachate is treated through the adoption of the garbage leachate treatment system provided by the invention, and the garbage leachate is partially recycled and partially discharged after being purified. The emission concentrations of class 1 pollutants and class 2 pollutants in the discharged purified liquid are 30% or below of the emission concentration specified by the national standard, and the sludge obtained by sedimentation, precipitation and filtration is also transported outside for cleaning, is combusted by a boiler or is recycled after being subjected to solid-liquid separation treatment.

Description

technical field [0001] The invention belongs to the technical field of waste water purification treatment such as garbage leachate, and in particular relates to a garbage leachate treatment system and a method for treating garbage leachate. Background technique [0002] Landfill leachate refers to the water contained in the garbage itself in the landfill, the rain and snow water and other water entering the landfill, deducting the saturated water holding capacity of the garbage and the covering soil, and passing through the garbage layer and the covering soil. a high concentration of organic wastewater; also includes water seepage from accumulated waste intended for incineration. Landfill leachate is a widespread secondary pollution in the process of municipal solid waste treatment, and it is one of the urgent problems to be solved in the construction and operation of landfills and waste incineration plants. The water quality of landfill leachate is complex and the concentr...

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Problems solved by technology

[0003] Based on the above prior art, the object of the present invention is to provide a landfill leachate treatment system and its method for treating landfill leachate, which overcomes the easy scaling and frequent cleaning of the simple MVC evaporation technology in the prior art The defects of high COD and high ammonia nitrogen wastewater treatment cost are high and the applicability is poor

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