Method for treating landfill leachate

Abstract

The invention discloses a method for treating landfill leachate. The method comprises the following steps of: feeding the landfill leachate into an adjustment tank first, sequentially feeding the landfill leachate into a biological contact oxidation pond, a low-oxygen aeration tank, a nitrosation reaction tank, an anaerobic ammonium oxidation reaction tank and a microwave treater, finally feeding the landfill leachate into a separator, performing precipitation separation to separate active carbon obtained after microwave treatment from the outlet water of the landfill leachate, and then discharging the outlet water which meets the standard. The technology for treating the landfill leachate saves energy and is high in efficiency and low in consumption; and by the method, pollutants such as organic pollutants, nitrogen (N) and phosphorus (P) can be effectively removed, and the environmentally acceptable treatment and discharge of the landfill leachate can be realized finally.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a treatment method for landfill leachate. . Background technique [0002] The treatment of leachate in urban waste landfills has always been a very difficult problem in the design, operation and management of landfills. Landfill leachate, a high-concentration organic wastewater with complex components, will cause serious water pollution accidents and endanger the ecological environment if it is directly discharged into the environment without treatment. In the past, the leachate produced by the simple landfill treatment of garbage was mainly purified by the underlying land. However, with the extension of time and the limited removal capacity of pollutants by the geological structure, the leachate will affect the groundwater, surface water and landfill. The surrounding environment of the site will be polluted, resulting in hypoxia, water quality deterioration and eutrophication ...

AI Technical Summary

Problems solved by technology

In addition, the stripping method is greatly limited by the climate

Therefore, the current landfill leachate treatment mainly adopts biological methods, but the existing biological methods have complicated processes, many processing steps, a lot of equipment, and large investment in facilities and equipment, while the amount of treated water is generally relatively small, resulting in depreciation, The maintenance cost is higher, so the investment and operation cost of processing are higher

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