Aeration system of MBR (Membrane Bio-Reactor) membrane module and control method of aeration system

Abstract

The invention discloses an aeration system of an MBR (Membrane Bio-Reactor) membrane module and a control method of the aeration system, and aims to solve the problem of easily-caused environment pollution or high aeration energy consumption or short service life of the MBR membrane module in the traditional aeration system of the MBR membrane module. The aeration system of the MBR membrane module comprises an MBR aeration manifold, an upper-layer aeration manifold, a lower-layer aeration manifold, a plurality of upper-layer aeration branch pipes and a plurality of lower-layer aeration branch pipes, wherein the MBR aeration manifold is arranged in an MBR tank; the upper-layer aeration manifold and the lower-layer aeration manifold are communicated with the MBR aeration manifold; the plurality of upper-layer aeration branch pipes are communicated with the upper-layer aeration manifold; the plurality of lower-layer aeration branch pipes are communicated with the lower-layer aeration manifold; the plurality of upper-layer aeration branch pipes are located on the same horizontal plane which is 400-450mm far away from the bottom of the MBR tank; the plurality of lower-layer aeration branch pipes are located on the same horizontal plane which is 150-250mm far away from the bottom of the MBR tank. The aeration system disclosed by the invention can be used for effectively controlling membrane pollution by using relatively low air flow.

Description

technical field [0001] The invention relates to an MBR membrane module aeration system and a control method. Background technique [0002] MBR membrane bioreactor is a new method of sewage treatment that combines activated sludge method and membrane separation technology, and replaces the secondary sedimentation tank in traditional conventional activated sludge method with membrane separation technology. Compared with the traditional activated sludge method, it has many advantages such as good and stable effluent quality, less residual sludge output, small footprint, easy installation, and convenient operation. At the same time, there are also some problems in the actual application process, such as easy pollution, high energy consumption, and relatively short service life. [0003] There are many methods to control membrane fouling, among which the most important method is to use continuous aeration to scour the membrane surface. In order to achieve the effect of controll...

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Problems solved by technology

[0005] In order to overcome the disadvantages of the existing MBR membrane module aeration system, which are easy to pollute the membrane, or the aeration energy consumption is high, or the life of the MBR memb

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