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Membrane biological reactor

A membrane bioreactor, membrane box technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of poor mud-water separation effect, poor mud-water separation effect, It is difficult for the effluent to meet the requirements of reused water, so as to achieve the effect of saving water resources, good separation of mud and water, and improving recycling capacity.

Active Publication Date: 2013-06-12
CHINA ELECTRONICS ENG DESIGN INST
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Problems solved by technology

However, non-woven fabrics are used as the separation medium, and the separation effect of mud and water is not very good, and the effluent is difficult to meet the requirements of reuse water
[0004] The defect of the existing technology is that the sewage treatment is carried out in the oxidation ditch, the mud-water separation effect is poor, and the effluent is difficult to reach the quality of reused water

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Embodiment Construction

[0028] In order to improve the mud-water separation effect of the oxidation ditch and make the effluent reach the quality of reused water, the invention provides a membrane bioreactor. In this technical scheme, ultrafiltration membrane modules or microfiltration membrane modules are used to separate sludge and water from the sewage in the oxidation ditch, which improves the effect of sludge and water separation. The effluent from the membrane modules flows into the permeate pool through a vacuum device, and the permeate The water in the pool meets the requirements of reuse water. In order to make the purpose, technical solution and advantages of the present invention clearer, the following specific examples are given to further describe the present invention in detail.

[0029] Such as figure 1 As shown, an embodiment of the membrane bioreactor of the present invention includes: an oxidation ditch 1, a vacuum device 17, a permeate pool 18 and a permeate pipeline 16, wherein, ...

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Abstract

The invention relates to the technical field of wastewater treatment, and discloses a membrane biological reactor. The membrane biological reactor comprises an oxidation ditch, a vacuum device, a permeation liquid pool and a permeation liquid pipeline, wherein a plurality of membrane boxes are arranged in the oxidation ditch, a plurality of membrane modules are arranged in each membrane box, and the membrane modules are ultrafiltration membrane modules or microfiltration membrane modules, and a water outlet pipe of each membrane module is communicated with the permeation liquid pipeline; the vacuum device is arranged on the permeation liquid pipeline and communicated with the permeation liquid pool; and waste water is purified in the oxidation ditch and then carried out sludge-water separation through the membrane modules, and the separated water enters the permeation liquid pool via the water outlet pipes to flow into the permeation liquid pool. As the membrane biological reactor adopts the ultrafiltration modules or the microfiltration modules for sludge-water separation, so that the sludge-water separation effect is better, the vacuum device vacuumizes to enable the effluent in the membrane modules to flow into the permeation liquid pool through the permeation liquid pipeline, the water in the permeation liquid pool meets the requirements of recovered water, the water recycling is improved, and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a membrane bioreactor. Background technique [0002] With the development of modern industry, people pay more and more attention to sewage treatment. Oxidation ditch, as a deformation of activated sludge tank, is a circulating mixed aeration ditch, which is widely used in the field of sewage treatment. The ordinary integrated oxidation ditch integrates the functions of aeration, sedimentation, mud-water separation and sludge return, and does not need to set up additional primary sedimentation tanks, secondary sedimentation tanks and sludge return equipment, which greatly simplifies the sewage treatment facilities. The oxidation ditch process It has become the preferred process for small and medium-sized urban sewage treatment plants. [0003] Oxidation ditch has the advantages of good nitrogen and phosphorus removal, stable operation and reasonable economy, but the mud...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F9/02
Inventor 申颖洁王晓红吴光夏王立赵玉娟刘立超
Owner CHINA ELECTRONICS ENG DESIGN INST
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