A Method for Controlling Membrane Fouling Using Quorum Sensing Quenching Immobilized Bacterial Strains

A technology of quorum sensing and membrane control, applied in the directions of immobilized enzymes, chemical instruments and methods, microorganism-based methods, etc., can solve the problems of further separation, adaptability to be verified, limited types, etc., to achieve low cost, guaranteed Viability and performance, effectiveness in controlling membrane fouling

Inactive Publication Date: 2020-12-29
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

However, the types of quorum induction quenching bacteria that can be applied to the prevention and control of membrane fouling are limited, and their adaptability in different sewage treatment environments remains to be verified.
The separation of more efficient group quenching bacteria in the sewage treatment ontology project needs to be further separated

Method used

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  • A Method for Controlling Membrane Fouling Using Quorum Sensing Quenching Immobilized Bacterial Strains
  • A Method for Controlling Membrane Fouling Using Quorum Sensing Quenching Immobilized Bacterial Strains
  • A Method for Controlling Membrane Fouling Using Quorum Sensing Quenching Immobilized Bacterial Strains

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Embodiment Construction

[0061] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0062] Please refer to figure 1 Shown is a schematic diagram of the main flow of an embodiment of a method for controlling membrane fouling by using quorum sensing quenching immobilized strains provided by the present invention. In this embodiment, the method comprises the steps of:

[0063] In step S1, the bacteria in the activated sludge sampled from the sewage treatment plant are subjected to directional separation using the minimum culture medium method, and a purified single colony is isolated;

[0064] Specifically, this step S1 further includes the following process:

[0065] Collect the in-situ activated sludge from the sewage treatment plant, divide it into centrifuge tubes, transfer it to the laboratory at low temperature and store it in cold storage, and conduct the separation experiment of functional bacteria within 24 hours. Specifically, ...

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Abstract

The invention discloses a method for controlling membrane pollution by quorum quenching immobilized strains. The method includes the steps: firstly, performing directional separation on bacteria in activated sludge taken out from a sewage treatment plant by the aid of a minimum medium method, and separating out purified single colonies; secondly, performing verification of quorum quenching function on the separated purified single colonies to obtain functional strains with the quorum quenching function; thirdly, performing imbedded immobilization on the functional strains by the aid of porous natural materials to form imbedded immobilization bacteria; fourthly, adding the imbedded immobilization bacteria into a bio-film growth reactor, and performing comprehensive verification on membrane pollution prevention effect. According to the method, membrane pollution caused by bio-films on the surface of a filtering membrane can be efficiently prevented by the aid of immobilized quorum quenching bacteria, and cost is low.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for controlling membrane fouling by using quorum induction to quench immobilized bacterial strains. Background technique [0002] The continuous increase of sewage discharge has put great pressure on sewage treatment. In the process of sewage treatment, problems such as high cost, high energy consumption, and low reuse rate of reclaimed water need to be solved urgently. [0003] my country is one of the 13 countries in the world that are extremely short of water resources, and the problem of water pollution has become increasingly prominent, but the total amount of sewage discharge in the country is still showing a continuous growth trend. According to the 2015 China Environmental Status Bulletin released by the Ministry of Environmental Protection in 2016, among the 967 surface water national control sections in the country in 2015, 64.5% of the sectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/08C12N1/20C12N1/02C12N11/084C12N11/089C12N11/10C12R1/085
CPCB01D65/08C12N1/02C12N1/20C12N11/08C12N11/10
Inventor 王文昭赵畅徐期勇王宁
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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