AO-MBR membrane sewage treatment system and working method

Abstract

The invention discloses an AO-MBR membrane sewage treatment system and a working method in the technical field of AO-MBR membrane sewage treatment. The AO-MBR membrane sewage treatment system comprises an adjusting tank, wherein the front side of the adjusting tank is communicated with an anaerobic tank, the right side of the anaerobic tank is communicated with an aerobic tank, the rear side of the aerobic tank is communicated with a membrane reaction tank, an MBR membrane plate is slidably connected into the membrane reaction tank, a decontamination mechanism for pre-cleaning the MBR membrane plate is arranged on the front side of the MBR membrane plate, and the rear side of the MBR membrane plate is provided with a cleaning mechanism for pushing water flow to clean membrane holes of the MBR membrane plate. According to the invention, sludge in sewage is treated in advance when the MBR membrane plate treats the sewage every time, a large amount of sludge is prevented from being accumulated on the MBR membrane plate, the treated sewage is pushed forwards through a rectangular push plate, the MBR membrane plate is impacted, the MBR membrane plate is cleaned, the long-time working effect of the MBR membrane plate is guaranteed, and thorough cleaning of the MBR membrane plate on the sewage is facilitated.

Description

technical field [0001] The invention relates to the technical field of AO-MBR membrane sewage treatment, in particular to an AO-MBR membrane sewage treatment system and a working method. Background technique [0002] In the field of wastewater treatment, the membrane bioreactor process (MBR for short) replaces the traditional secondary settling tank with membrane separation technology, and filters the biochemically treated sewage out of the bioreactor to obtain treated water with very low turbidity. At the same time, the sludge, bacteria and macromolecular organic matter in the system are still kept in the reactor. This separation method improves the quality of effluent water, increases the sludge concentration in the reactor, and retains beneficial microorganisms. Compared with the traditional activated sludge method, the effluent water quality of MBR technology is better, COD, BOD, The turbidity is very low, most bacteria and viruses are intercepted, and the effluent wate...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of AO-MBR membrane sewage treatment system and working method, to solve the above-mentioned background technology proposed in the prior art when utilizing MBR membrane to treat sewage, sewage will produce a large amount of after AO reaction For sludge treatment, a large amount of sludge flows to the MBR membrane and accumulates, which will reduce the effect of the MBR membrane on sewage treatment, and a large amount of sludge will accumulate on the MBR membrane, which will block the die holes on the MBR membrane, pollute the MBR membrane, and reduce the MBR membrane. The problem of processing efficiency

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