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Treatment methods of landfill leachate and treatment systems thereof

A technology of landfill leachate and treatment method, which is applied in the field of waste water multi-stage treatment method and its treatment system, can solve problems such as poor effect, high cost, and difficult to solve landfill leachate, so as to improve biodegradability, reduce concentration, The effect of reducing COD and ammonia nitrogen

Active Publication Date: 2010-08-18
CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, there is no better method for treating landfill leachate in my country. The commonly used methods for treating landfill leachate include biological method, Fenton oxidation method, electrochemical method, etc. If these methods are used alone to treat landfill leachate, or the effect is not good, Or the cost is too high, it is difficult to solve the problem of landfill leachate

Method used

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  • Treatment methods of landfill leachate and treatment systems thereof
  • Treatment methods of landfill leachate and treatment systems thereof
  • Treatment methods of landfill leachate and treatment systems thereof

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Embodiment 1

[0047] a kind of like figure 1 The shown landfill leachate treatment system applied in the treatment method of the present invention includes a sequentially connected pretreatment tank, anaerobic reaction tank, electrochemical reaction tank, sedimentation tank, oxidation tank, regulation tank and biochemical reaction tank , each treatment tank is equipped with a liquid inlet and a liquid outlet, and each treatment tank is connected in turn through pipes (or ditches); anaerobic sludge is filled in the anaerobic reaction tank, and anaerobic sludge is filled in the electrochemical reaction tank Two electrochemical reactors are installed, each electrochemical reactor is equipped with a stirring device, Fenton reagent is added in the oxidation tank, and aerobic sludge is filled in the biochemical reaction tank; among them, the anaerobic reaction tank In addition to the aforementioned liquid inlet and outlet, the sedimentation tank and the biochemical reaction tank are each equipped...

Embodiment 2

[0059] a kind of like image 3 The shown landfill leachate treatment system applied in the treatment method of the present invention includes sequentially connected pretreatment tanks, anaerobic reaction tanks, biochemical reaction tanks, electrochemical reaction tanks, sedimentation tanks, oxidation tanks and adjustment tanks , each treatment tank is equipped with a liquid inlet and a liquid outlet, and each treatment tank is connected in turn through pipes (or ditches); anaerobic sludge is filled in the anaerobic reaction tank, and anaerobic sludge is filled in the biochemical reaction tank. Aerobic sludge is placed, two electrochemical reactors are installed in the electrochemical reaction pool, each electrochemical reactor is equipped with a stirring device, and Fenton reagent is added in the oxidation pool; among them, the anaerobic reaction pool , biochemical reaction tank, sedimentation tank and regulating tank are provided with the aforementioned liquid inlet and outle...

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Abstract

The invention belongs to multiple-stage treatment methods of waste water and treatment systems thereof, and particularly discloses treatment methods of landfill leachate and treatment systems thereof. One of the treatment methods comprises the following steps of: firstly, mixing the landfill leachate and anaerobic sludge to perform complete reaction; secondly, performing electrochemical reaction to obtain flocs and initially depositing effluent water; finally, adjusting the pH value, adding Fenton reagents and mixing the effluent water and aerobic sludge after the complete reaction between the Fenton reagents and the leachate in a later phase. In the other method of the invention, the mixing and reaction between the leachate in the initial phase and the aerobic sludge are performed before the electrochemical reaction and other steps are the same. The invention also provides two different treatment systems for the two different treatment methods. The systems are formed by optimally combining a pre-treatment tank, an anaerobi reaction tank, an electrochemical reaction tank, a deposition tank, an oxidation tank, a regulating tank, a biochemical reaction tank and a sludge concentration tank. The treatment methods have the advantages of wide application range, small influence of environment, low operation cost, good treatment effect and the like.

Description

technical field [0001] The invention relates to a multistage treatment method and a treatment system for waste water, in particular to a multistage treatment method and a treatment system for waste water including biochemical treatment steps. Background technique [0002] With the increase of my country's urban population, the expansion of city scale and the improvement of residents' living standards, the output of urban domestic waste in my country is increasing sharply. By 1999, the annual output of domestic waste in my country had reached 1.4 billion tons, and it was increasing at an annual rate of 8% to 10%. The per capita daily waste production had exceeded 1Kg, approaching the level of industrially developed countries. According to the principle of "harmless, reduction, and recycling" of waste disposal in my country, a large number of domestic waste sanitary landfills will be newly built. Whether the landfill leachate can be treated up to the standard and discharged i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/46C02F1/72C02F1/50C02F1/76
Inventor 蒋晓云朱凌峰曾晓屏谭自强王强
Owner CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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