High pressure release type biochemical sludge conditioning method

A biochemical sludge and discharge technology, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of increased sludge treatment costs, low impact of sludge dehydration, and large limitations To achieve the effect of excellent wall breaking effect, low energy consumption and equipment cost, and convenient operation

Active Publication Date: 2018-09-28
重庆交大国科航科技有限公司
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Problems solved by technology

[0005] The above sludge conditioning methods all have relatively large limitations, and their impact on subsequent sludge dehydration is not high
The conditioning method of existing sewage plants is mainly chemical conditioning, and the addition of polyacrylamide and other polymer flocculants greatly increases the cost of sludge treatment

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  • High pressure release type biochemical sludge conditioning method

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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples.

[0032] A high-pressure discharge biochemical sludge conditioning method, which is characterized in that the sludge is placed in a closed container, and then the internal pressure of the container is increased by means of pressurization. The pressure relief is completed inside, relying on the gas expansion and shock shock generated at the moment of pressure relief, the microbial cells in the sludge are broken and the sludge conditioning is realized.

[0033] In this way, relying on high-pressure discharge for sludge treatment can greatly increase the wall breaking rate of microbial cells in sludge, realize sludge conditioning, and facilitate subsequent sludge dehydration treatment. At the same time, it has the advantages of simple and convenient operation, high processing efficiency and no side effects.

[0034] Among them, the pressuriz...

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Abstract

The invention discloses a high pressure release type biochemical sludge conditioning method, which is characterized in that sludge is poured into a sealed container; then, the pressure inside the container is raised in a pressurization mode; when the pressure is raised to a rated value, pressure release is completed within an extreme time; microbial cells in the sludge realize wall breaking through gas expansion and oscillation impact generated during the pressure release moment, and the sludge conditioning is realized. The subsequent sludge dehydration effect can be better improved; the method has the advantages that the implementation is simple; the operation is convenient; the treatment efficiency is higher; no side effect is generated, and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment and conditioning method for sewage treatment product sludge. Background technique [0002] Sludge is an associated product in the process of sewage treatment in urban sewage plants, especially after sewage treatment by activated sludge method, a large amount of sludge will be produced. Usually, nearly 1 / 3 of the organic matter is converted into sludge during sewage treatment, which contains a large amount of organic pollutants, pathogenic microorganisms, heavy metals, etc. Therefore, there are many kinds of organic pollutants in sludge, including chlorinated phenols, polycyclic aromatic hydrocarbons, nitrobenzenes, amines, halogenated alkanes, etc. Some of these organic pollutants can remain stable in the environment for a long time. The influence of the air environment can easily breed bacteria and cause many diseases in humans or other organisms. Therefor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
CPCC02F11/004C02F2301/066C02F2303/04
Inventor 杨威张先炳阙思思杨胜发曾祯
Owner 重庆交大国科航科技有限公司
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