Vibration-type membrane bioreactor

Abstract

The invention relates to a vibration-type membrane bioreactor, which is characterized by comprising a preheating device, a membrane bioreactor, a biological deodorization device, a vibrating device and a clear water tank unit, wherein the preheating device is a biochemical area in an equipment body; the membrane bioreactor is arranged in a membrane filtration area in the equipment body; the vibrating device is arranged on the membrane bioreactor; the biological deodorization device is arranged on the top of the equipment body; a water outlet at the bottom of the biological deodorization device is communicated with the inside of the equipment body; and the clear water tank unit is a clear water area in the equipment body. The vibration-type membrane bioreactor takes the pressure above the membrane pressure difference of 20 Kpa as a membrane pollution control index, automatically vibrates membrane components, accelerates the falling of membrane pollutants, and prolongs the cleaning period from the prior offline cleaning for one time per 6 months to cleaning for once per 8-9 months, thereby saving 30 to 50 percent of chemical agents, making the membrane flux more stable and the operation cycle of the MBR longer, and prolonging the service life of a membrane.

Description

technical field [0001] The invention relates to a treatment device for treating urban sewage and industrial waste water. Background technique [0002] Membrane bioreactor (Membrane Bioreactor, MBR), as a new type of high-efficiency sewage treatment equipment, has increasingly attracted the attention of various countries. MBR has become an attractive and competitive option for municipal and industrial wastewater treatment and reuse, and is considered "best available technology". However, degradation of membrane separation performance due to membrane fouling is the major operational failure of most membrane processes. [0003] At present, the composition of MBR neutralization feed liquid-sludge mixed liquid includes microbial community, its metabolites and organic macromolecules, small molecules, dissolved substances and solid particles in the treated wastewater. Each component can foul the membrane, but mainly from microbial flocs that are larger than the membrane pore size...

AI Technical Summary

Problems solved by technology

[0011] There are some defects in the above cleaning methods. For example, for the submerged flat membrane, the membrane block is pulled out from the membrane box, and the membrane surface is washed with high-pressure water or a brush, which will cause the device to stop operating and affect production.

If chemical cleaning is used, on the one hand, chemical cleaning will consume chemicals and cause secondary pollution to water; on the other hand, chemical cleaning will bring a lot of inconvenience to production and operation

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