Multi-stage photocatalytic antimicrobial membrane reactor

Abstract

The invention relates to a multi-stage photocatalytic antimicrobial membrane reactor, comprising a reaction cell, wherein the reaction cell is separated by a vertically arranged filtering mesh into afirst-level purifying cell and a second-level purifying cell, a light source is arranged in the second-level purifying cell, and a photocatalytic reaction gel film is arranged in the second-order purifying cell, the photocatalytic reaction gel film comprises a photocatalytic reaction site and a polar group, the surrounding region of the photocatalytic reaction site is a high-adsorption polar groupregion, each charge in the high-adsorption polar group region and a non-high-adsorption polar group region is positive or negative, the potential of the high-adsorption polar group region is higher than that of the non-high-adsorption polar group region, and the high-adsorption polar group region is formed by high-adsorption polar groups, or weak-adsorption groups in a gathering manner. The reactor disclosed by the invention can be used for deeply treating particles, bacteria, gel and toxic substances in sewage, and degrading most of organic matters in the sewage, so as to achieve the efficient sewage purification, thus having the great promotion value.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a multistage photocatalytic antibacterial membrane reactor. Background technique [0002] In recent years, with the rapid development of my country's economy and the continuous growth of the population, a large number of pollutants have been discharged into surface water ecosystems such as rivers and lakes, resulting in the destruction of the ecological environment of the river basin and seriously restricting the sustainable development of economy and society. affect people's quality of life. Sewage treatment technology and its engineering applications have become an essential part of maintaining social and economic sustainable development. [0003] For water pollution problems, traditional treatment methods include oxidation, adsorption and biological methods. The oxidation method is mainly divided into liquid chlorine disinfection, chlorine dioxide disinfection and ozone oxidatio...

AI Technical Summary

Problems solved by technology

[0006] The reaction membrane of a common integrated membrane reactor is formed by mixing catalytic materials into a fixed carrier, such as embedding catalytic materials in glass, stainless steel, fibers or carbon nanotubes, etc., but these immobilization methods have various Such problems as easy peeling off of the catalyst, poor compatibility, and poor flexibility of composite materials, etc. For example, patent CN103936097A discloses a method for degrading methyl orange with a perovskite / polysaccharide composite photocatalyst. The preparation method is complicated and requires 700°C At the same time, although the stability of the composite material is not mentioned in the article, the compatibility between the inorganic particles and the polymer material in this state is poor, the catalyst is very easy to fall off, and it is difficult to reuse

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