School sewage treatment system based on membrane bioreactor

Abstract

The embodiment of the invention discloses a school sewage treatment system based on a membrane bioreactor. The school sewage treatment system comprises a sewage filtration treatment pond, a vacuum water quality regulation pond and a membrane unit decontamination pond, wherein the inner portion of the sewage filtration treatment pond is provided with a filtering pretreatment mechanism, the membraneunit decontamination pond is connected with a pure water temporary storage tank, the pure water temporary storage tank is connected with a water suction pump, an output end of the water suction pumpis connected with a back flushing water header pipe, the tail end of the back flushing water header pipe is provided with a water segregator, each water outflow swivel is provided with a flushing spray head, the upper ends of front and rear boards of the inner portion of the sewage filtration treatment pond are provided with servo motors respectively, a beam supporting rod is also arranged under the servo motors, the two ends of the beam supporting rod are fixedly provided with annular extension rods respectively, and the annular extension rods are hinged with lifting down-extension rods connected with output shafts of the servo motors. The school sewage treatment system based on the membrane bioreactor has the advantages that flushing clean area of a filter grid is increased, the grid blockage is avoided, the filtering effect of sewage impurities is maintained, and the stable and normal operation of the whole sewage treatment system is ensured.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of sewage treatment, in particular to a school sewage treatment system based on a membrane bioreactor. Background technique [0002] With the continuous development of the scale of colleges and universities in our country, the discharge of school sewage is increasing, and the demand for treatment of school sewage is becoming stronger and stronger. Seeking efficient, economical and stable sewage treatment facilities has become one of the urgent tasks at present. First, and the source of school sewage is domestic sewage from dormitories, teaching buildings, gymnasiums, canteen and catering wastewater, and some rainwater. These sewage have good biochemical properties, so most of them use membrane bioreactors (MBR) to purify sewage. The treatment steps of sewage by membrane bioreactor generally consist of four steps: filtration of sewage impurities, water quality adjustment, MBR decompo...

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Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a school sewage treatment system based on a membrane bioreactor to solve the problem of easy clogging of filter grids and low purification efficiency in the prior art

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