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A reciprocating rotary membrane bioreactor

A membrane bioreactor, reciprocating rotation technology, applied in the field of environmental engineering of water resource reuse, can solve the problems of large aeration volume of membrane bioreactor, complicated membrane cleaning process, cumbersome operation, etc., so as to suppress concentration polarization Phenomenon, the cleaning effect is remarkable, the effect of high concentration

Active Publication Date: 2018-04-06
BEIJING SINORICHEN ENVIRONMENTAL PROTECTION
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  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to provide a reciprocating and rotating membrane bioreactor for the technical defects in the above-mentioned membrane bioreactor process of sewage treatment. In the process of sewage treatment, the membrane bioreactor reduces the The problem of membrane flux decrease caused by concentration polarization and pollution on the membrane surface; the membrane cleaning process is complicated, the operation is cumbersome, and the membrane bioreactor aeration volume is too large and the energy consumption is high.

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  • A reciprocating rotary membrane bioreactor
  • A reciprocating rotary membrane bioreactor
  • A reciprocating rotary membrane bioreactor

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Embodiment 1

[0133] The domestic sewage discharged from a residential area in Miyun County, Beijing is used as raw water, the treated water volume is 10t / h, the sewage flow rate is 1.2-1.5m / s, and the aeration volume is 100m 3 / h, the gas-water ratio is 10:1, and the dissolved oxygen (DO) concentration is 2.8mg / L. The reciprocating rotary membrane bioreactor of the present invention is used to treat domestic sewage, and the membrane silk adopts organic hollow fiber ultrafiltration membrane, and the initial membrane flux is 40L / m 2 .h. The speed of reciprocating rotation is 20rpm, and the period of reciprocating rotation is: rotate counterclockwise for 2 seconds and then rotate clockwise for 2 seconds; the angle of reciprocating rotation is: rotate 90°counterclockwise, rotate 90°clockwise, that is, rotate 90°counterclockwise (1 second); rotate clockwise to return to the initial position (1 second); rotate clockwise 90 degrees (1 second); rotate counterclockwise to return to the initial pos...

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Abstract

The invention discloses a reciprocating rotary type membrane bioreactor which comprises a sewage treatment pond, a membrane separation device, a sludge discharge device, an aeration device, a water inlet pipe and a water outlet pipe. The membrane separation device is arranged in the sewage treatment pond, and a power driving assembly which drives the membrane separation device to conduct reciprocating rotation movement is installed on the lower portion of the membrane separation device. Due to the fact that the membrane separation device conducts the reciprocating rotation movement under the action of the power driving assembly, the surface concentration polarization phenomenon of a membrane separation assembly is significantly reduced, the membrane flux is kept stable, the service life of the membrane assembly is prolonged, and the sewage treatment efficiency is improved. Meanwhile, rejuvenation of the membrane assembly is conducted by rotating the membrane assembly in a rapid and reciprocating mode, traditional cleaning processes of adding chemical drugs or water or gas or the like are not needed, operation is easy, and the consumption of energy resources is greatly reduced.

Description

technical field [0001] The invention relates to a sewage treatment and application technology, in particular to a membrane bioreactor for treating sewage with biological technology, which belongs to the technical field of environmental engineering for water resource reuse. Background technique [0002] Membrane Bio-Reactor (MBR) is a new type of wastewater treatment system that organically combines membrane separation technology and biological treatment technology. Replace the terminal secondary sedimentation tank of traditional biological treatment technology with membrane modules, maintain a high concentration of activated sludge in the bioreactor, increase the organic load of biological treatment, thereby reducing the footprint of sewage treatment facilities, and reduce the remaining sewage by maintaining low sludge load amount of mud. Mainly use membrane separation equipment to intercept activated sludge and macromolecular organic matter in water. The concentration of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 吴盟盟刘欣庄洪雷童京华张天高
Owner BEIJING SINORICHEN ENVIRONMENTAL PROTECTION
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