Integrated sewage treatment facility based on MBR (membrane bioreactor) membrane technique and sewage treatment method thereof

Abstract

The invention discloses an integrated sewage treatment facility based on an MBR (membrane bioreactor) membrane technique, which comprises a tank body, and an anaerobic biochemical region, an anoxic biochemical region and an aerobic and MBR membrane bioreaction region which are arranged in the tank body, wherein the anaerobic biochemical region, aerobic and MBR membrane bioreaction region and anoxic biochemical region are distributed on the left, in the middle and on the right of the cross section of the tank body; the anaerobic biochemical region and the aerobic and MBR membrane bioreaction region are communicated with each other only through the bottoms; the top liquid level of the aerobic and MBR membrane bioreaction region is higher than the top liquid level of the anoxic biochemical region; the top of the aerobic and MBR membrane bioreaction region is provided with a water outlet pipe extending into the aerobic and MBR membrane bioreaction region, and an overflow weir communicated with the anoxic biochemical region; the upper part liquid level of the anoxic biochemical region is higher than the upper part liquid level of the anaerobic biochemical region; the bottom of the anoxic biochemical region is communicated with the upper part of the anaerobic biochemical region through a gravity pipeline; and the tank body is provided with a water inlet pipe communicated with the anaerobic biochemical region in the tank body. The invention also discloses a sewage treatment method using the facility.

Description

technical field [0001] The invention belongs to the field of environmental protection, and specifically relates to an integrated sewage treatment equipment and a sewage treatment method for treating sewage by anoxic-anaerobic-aerobic-membrane biological reaction treatment process. Background technique [0002] Domestic sewage contains a large amount of organic matter, as well as various viruses, bacteria and parasite eggs, as well as inorganic salts such as chlorides, sulfates, phosphates, etc., which can easily produce stench and pollute the environment, which is harmful to the human body and various animals. Plants are extremely harmful, so they need harmless treatment. [0003] At present, domestic sewage mostly adopts the method of primary pretreatment and secondary biochemical treatment, wherein secondary biochemical treatment includes activated sludge treatment process and biofilm treatment process, mainly including biological contact oxidation, SBR method, oxidation d...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the disadvantages of large floor area, high energy consumption, large sludge production, complicated operation and maintenance, and low removal rate of dephosphorization and nitrogen removal in domestic sewage, and provides a sewage treatment system with small floor area, low energy consumption, and high effluent quality. MBR membrane technology integrated sewage treatment equipment with high and little mud production and its sewage treatment method

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