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Anti-fouling and anti-blocking system of anaerobic membrane bioreactor

A bioreactor, anaerobic membrane biological technology, applied in the field of anaerobic process, can solve problems such as easy damage to membrane structure, introduction of pollutants, inability to efficiently remove pollutants, etc.

Inactive Publication Date: 2021-05-18
SHANGHAI BI ZONE ENVIRONMENTAL EQUIP & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN 111573782 A "Membrane pollution control method and device for water treatment equipment" adopts the combined cleaning method of backwashing and oscillating mechanical cleaning, and at the same time strengthens the agitation of the water body by stirring and air-water stirring, but because the backwashing and oscillating machinery can only clean the surface of the membrane pollution, unable to efficiently remove the pollutants clogged inside the membrane
[0005] CN111644070A "Reverse Osmosis Membrane Cleaning Agent for Reuse of Reclaimed Water" invented the method of cleaning with acidic cleaning agent and alkaline cleaning agent, and provided two cleaning agent formulas, but due to the need to add chemicals, it is easy to damage the membrane structure, and will Introduce new pollutants to treated wastewater

Method used

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  • Anti-fouling and anti-blocking system of anaerobic membrane bioreactor
  • Anti-fouling and anti-blocking system of anaerobic membrane bioreactor
  • Anti-fouling and anti-blocking system of anaerobic membrane bioreactor

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Embodiment

[0040] After the wastewater (such as wastewater produced by livestock and poultry breeding) is pretreated and advanced oxidation treatment, 90% of the COD is removed. At this time, the sewage enters the bioreactor from the water inlet pipe 10, and the COD of the water inlet is greater than 1000mg / L; the water inlet pipe 10 The liquid flow sensor 20 is set, the water inlet pump is connected to the PCL control system, the flow rate of the water inlet can be controlled through the PCL control system, and the sewage enters the bioreactor, and the degradation of organic matter and the accumulation of methane are first carried out through the anaerobic reaction zone, and the microorganisms are attached to the graphene to improve the bioreactor. On the biological carrier of the sponge, on the one hand, the biological carrier provides the growth space for the microorganisms, and promotes the maintenance of the shape of the granular anaerobic sludge; on the other hand, it absorbs the org...

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Abstract

The invention discloses an anti-fouling and anti-blocking system of an anaerobic membrane bioreactor, and belongs to the field of anaerobic processes. The device comprises a bioreactor, wherein a biological carrier is arranged in the bioreactor, a cathode and an anode are respectively arranged in the bioreactor, an external power supply and a sliding resistor are arranged outside the bioreactor, the external power supply, the sliding resistor, the cathode and the anode form a closed circuit, and a backwashing assembly is further arranged outside the bioreactor; a methane collecting device is further arranged outside the bioreactor, one end of the methane collecting device is communicated with a biogas reflux pump through a pipeline, the output end of the biogas reflux pump is communicated with a biogas reflux pipe, and one end of the biogas reflux pipe is communicated with a backwashing assembly which is further arranged outside the bioreactor. According to the anti-fouling and anti-blocking technology for the anaerobic bioreactor provided by the invention, membrane pollution in the bioreactor is relieved and the treatment efficiency of the bioreactor is improved by adding the biological carrier into the bioreactor and the like.

Description

technical field [0001] The invention relates to an anaerobic membrane bioreactor antifouling and blocking system, which belongs to the field of anaerobic technology and mainly provides a method for alleviating membrane pollution of anaerobic membrane bioreactors. Background technique [0002] Anaerobic membrane biological treatment technology is a sewage treatment technology that combines traditional anaerobic digestion with membrane filtration system. It has the advantages of recyclable and convenient operation. However, when the organic load is high, the concentration of extracellular polymeric substances (EPS) and soluble microbial products (SMP) in the system increases, causing the clogging of the filter membrane. [0003] Traditional effective methods to alleviate membrane fouling include optimizing operation mode and membrane cleaning and maintenance. By optimizing the operation mode, such as improving the system aeration mode, adjusting the aeration rate, and pretrea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01D63/02B01D65/02B01D65/08C02F1/72C02F3/28C02F101/30
CPCC02F9/00B01D63/02B01D65/02B01D65/08C02F2101/30C02F2209/005C02F2209/06C02F2209/02C02F3/2853C02F1/72C02F3/282B01D2321/04B01D2321/16
Inventor 刘云洲
Owner SHANGHAI BI ZONE ENVIRONMENTAL EQUIP & ENG
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