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Membrane aeration and membrane separation coupled sewage treatment device and method

A sewage treatment device and membrane aeration technology, applied in the field of environmental engineering, can solve the problems of shackled promotion and application, and achieve the effects of fast oxygen supply, cost reduction, and stable effluent quality.

Inactive Publication Date: 2005-01-26
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] Membrane separation bioreactor and membrane aerated bioreactor are both types of membrane bioreactor (MBR), both have obvious advantages, but the existing problems cannot be avoided. In fact, the promotion and application of the two processes are hindered.

Method used

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  • Membrane aeration and membrane separation coupled sewage treatment device and method

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Embodiment

[0021] The amount of sewage to be treated is 10m 3 / d meter, the COD concentration is 500mg / l. Oxygen is introduced from the upper end of the membrane aeration separation reactor 3, diffuses into the return sludge through the aeration membrane 2, and enters the bioreactor 4 with the return sludge; sewage and return sludge enter from the upper part of the bioreactor 4, and are mixed with the mixer 5 Stirring, mixing with the activated sludge in it, purifying the wastewater through the metabolic activities of microorganisms, and sending the reacted mixed liquid from the bottom of the membrane aeration separation reactor through the reflux pump 6 for solid-liquid separation, passing through the separation membrane 1, the clear water can be discharged or reused, and the concentrated solution is sent back to the bioreactor.

[0022] The size of the membrane aeration separation reactor is φ0.1×1.5m, in which the hydrophobic aeration membrane and the clear water separation membrane ...

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Abstract

The invention provides a membrane aeration and membrane separation coupled sewage treatment device and method, wherein the hydrophobic membrane for aeration and the hydrophilic membrane for separation are mounted in a common cylinder shaped reactor, forming a membrane aeration and separation reactor, a bioreactor is also arranged on the reflux line, so as to realize circulatory flow of the treated sewage water between the two reactors, thus achieving the coupling of aeration, membrane separation and biological degradation.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, relates to sewage treatment and reclaimed water reuse technology, in particular to a sewage treatment device and method coupled with membrane aeration and membrane separation. Background technique [0002] my country is one of the 13 water-poor countries in the world. More than 400 of the more than 600 cities are short of water. The industrial output value reduced by water shortage exceeds 120 billion yuan per year. Using reclaimed water with lower water quality and price than drinking water for greening, washing cars, and flushing sanitary appliances can save precious water resources, ease the contradiction between supply and demand of urban water, and reduce the burden on urban drainage systems. Membrane separation bioreactor (membrane separation bioreactor MSBR) is considered to be one of the most promising sewage treatment and reuse technologies, which itself can replace the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F3/10C02F3/12
CPCB01D65/02B01D61/14B01D2313/26C02F3/1268B01D2319/06B01D2321/185B01D2325/38B01D2311/2688B01D2325/36C02F3/208Y02W10/10
Inventor 张捍民杨凤林张兴文
Owner DALIAN UNIV OF TECH
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