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Method for advanced treatment and recycling of landfill leachate

A landfill leachate and advanced treatment technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of unstable operation of other treatment methods and non-standard discharge of landfill leachate and other issues to achieve the effect of saving operating costs and ensuring stable operation

Inactive Publication Date: 2012-07-25
EVERBRIGHT ENVIRONMENTAL PROTECTION TECHCAL DEV BEIJING +1
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Problems solved by technology

[0005] In view of the deficiencies of the existing technology, the present invention aims to provide an advanced treatment and reuse process of landfill leachate, which solves the problem that domestic landfill leachate cannot be discharged up to the standard by relying solely on biological treatment methods, and the operation of other treatment methods is unstable. The effluent can meet the standard of resource reuse

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  • Method for advanced treatment and recycling of landfill leachate
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  • Method for advanced treatment and recycling of landfill leachate

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[0032] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0033] The method of the present invention mainly comprises the following steps: anaerobic treatment, aerobic treatment, nanofiltration system treatment and reverse osmosis system treatment, such as figure 1 and figure 2 As shown, the specific implementation method is:

[0034] (1) Anaerobic treatment: The leachate of the present invention first enters the anaerobic system for treatment to remove most of the organic matter.

[0035] In this step, UASB (upflow anaerobic sludge bed reactor) is selected. The sewage passes through the UASB from bottom to top. Th...

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Abstract

The invention relates to a method for advanced treatment and recycling of landfill leachate. The method comprises the following steps: (1) conducting anaerobic treatment on landfill leachate; (2) conducting aerobic treatment on effluent obtained by the anaerobic treatment in the step (1), and conducting ultrafiltration on the effluent which is subjected to aerobic treatment; (3) conducting nanofiltration on the effluent obtained by ultrafiltration in the steps (2); and (4) conducting reverse osmosis treatment on the effluent obtained by nanofiltration in the step (3) so as to obtain recycling effluent. The method has the advantages that (1) the removing rate of organic pollutants is more than 98%, and the stable running of a subsequent system can be ensured; (2) the denitrification rate is more than 98%, the stoste of the landfill leachate is taken as supplementary carbon source, and the running cost is saved; and (3) the processed sewage meets the recycling standard, so that the secondary pollution is avoided.

Description

technical field [0001] The invention relates to the field of landfill leachate treatment, in particular, the invention relates to a method for advanced treatment and reuse of landfill leachate. Background technique [0002] At present, landfill technology or incineration technology is mainly used for the treatment of municipal solid waste in my country, and landfill leachate will be generated in the process of landfill or incineration treatment. COD in landfill leachate Cr The concentration is about 6000-70000mg / L, NH 3 -The concentration of N is about 1000-2500mg / L, and it contains a large amount of dissolved solids (sodium, calcium, chloride, sulfate, etc.), which is a kind of water quality with large changes in water quantity, imbalance of microbial nutrient elements, extremely complex components, and pollutant concentration. High organic wastewater, accompanied by a very heavy rotten odor, if not properly treated, will cause serious pollution to the surrounding water a...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 肖诚斌高用贵高兴斋任艳双庞保蕾温馨杨爱军覃广海
Owner EVERBRIGHT ENVIRONMENTAL PROTECTION TECHCAL DEV BEIJING
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