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Waste leachate purification process method

A technology for landfill leachate and purification process, applied in the field of landfill leachate purification process, can solve problems such as secondary pollution, and achieve the effects of low operating cost, easy control and operation, and saving investment and operating cost.

Active Publication Date: 2011-08-10
DANDONG HENGCHENG ENVIRONMENTAL PROTECTION TECH DEV
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Problems solved by technology

[0008] The purpose of the invention of the patent application of the present invention is to avoid the necessary setting of the membrane filtration treatment step in the existing combined process method, thereby overcoming the technical problem of secondary pollution in the purification treatment process, and providing a low investment and operation cost, Landfill leachate purification process that is easy to meet standard discharge requirements

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Embodiment Construction

[0015] The main body of the landfill leachate purification process method of the patent application of the present invention is composed of a comprehensive pretreatment stage, a biological treatment stage and a physical and chemical treatment stage successively.

[0016] As shown in the attached figure, the comprehensive pretreatment section includes grid pool, balance regulating pool, buffer pool, internal electrolytic reaction pool, lime regulating pool, one-stage cyclone solid-liquid separation purifier, aeration denitrification pool, Stripping tower and acid conditioning tank. The leachate storage tank built in the landfill collects the leachate, and a grid pool is set at the entrance of the equalization adjustment pool to intercept and remove larger suspended and floating objects, and then flow into the equalization adjustment pool. There is a certain blast aeration in the balance adjustment tank, which can balance the water quality and remove some organic matter, so as t...

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Abstract

The present invention relates to a process method for purifying and discharging waste leachate generated during landfill treatment in an environmental friendly way. The waste leachate purification process method comprises a comprehensive pretreatment section, a biological treatment section and a physical and chemical treatment section in a sequential connection. The waste leachate purification process method organically combines the comprehensive pretreatment section, the biological treatment section and the physical and chemical treatment section, omits a film filtering treatment step and achieves a complete process technical scheme of waste leachate purification treatment and actual realization of an environment-friendly discharge; and the technical scheme also has the technical characteristics of simple process, easy control and operation, low manufacturing and operating cost.

Description

technical field [0001] The patent application of the present invention relates to a process treatment method for purifying and environmentally friendly discharge of landfill leachate that occurs during landfill treatment. Background technique [0002] In the face of an increasing amount of municipal solid waste with increasingly complex types and components, it has always been the goal of scientific and technological personnel to implement harmless and environmentally friendly discharge treatment. Especially in the landfill treatment method, the produced landfill leachate is another big killer that pollutes the environment and destroys the ecology. Some achievements have been made, but there are still many technical problems to be solved urgently. [0003] The composition of landfill leachate is extremely complex, especially colloidal substances. As time goes on, the changes of landfill leachate become more complicated, and it is especially difficult to degrade, which also ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/72C02F1/52C02F3/30
Inventor 张玉森
Owner DANDONG HENGCHENG ENVIRONMENTAL PROTECTION TECH DEV
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