A double self-circulation integrated mbr reactor

Abstract

The invention provides a dual self-circulation integrated MBR reactor. The MBR reactor comprises an MBR reaction tank. The MBR reaction tank is divided into a filling material area, a biochemical area, and a membrane area by guide partition plates. A gap exists between the guide partition plates and the bottom end of the MBR reaction tank. A gap exists between a first guide partition plate, which is between the membrane area and the biochemical area, and the top end of the MBR reaction tank. A second guide partition plate, which is between the biochemical area and the filling material area, is provided with a sludge backflow opening. A filling material support is arranged in the filling material area and does not contact with the top end and bottom end of the MBR reaction tank. The sludge backflow opening is arranged in the second guide partition plate and is above the filling material support. A microporous aeration device is arranged in the biochemical area in the bottom of the MBR reaction tank. A perforated aeration device is arranged in the membrane area in the bottom of the MBR reaction tank. A membrane assembly is arranged above the perforated aeration device and a gap exists between the membrane assembly and the perforated aeration device. The MBR reactor can guarantee the quality of effluent.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a double self-circulation integrated MBR reactor. Background technique [0002] At present, sewage is often treated with a membrane-bioreactor (Membrane Bio-Reactor, MBR). [0003] like figure 1 As shown, the existing integrated MBR reactor includes: an MBR reaction tank 100 , a blower 14 , a suction pump 23 , a lift pump 24 , an electric three-way valve 26 and a sludge discharge pump 27 . The MBR reaction tank is provided with: a membrane module 1 , a diversion partition 3 , an aeration device 4 and a flow exchange control valve 5 . Wherein, the diversion partition 3 separates the MBR reaction tank into: an aerobic zone including a membrane module 1 and an aeration device 4 , and an anoxic / anaerobic zone 2 . Wherein, the anoxic / anaerobic zone 2 is: an area outside the aerobic zone in the MBR reaction tank; a flow exchange control valve 5 is arranged on the diversion ...

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Problems solved by technology

[0007] However, the following problems occurred when the MBR reactor was used to treat sewage: the nitrogen and phosphorus content of the reclaimed water obtained from the membrane module 1 by the suction pump 23 was unstable, and even the nitrogen and phosphorus content exceeded the standard

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