Efficient water treatment combined filler based on photocatalysis and microbial degradation

Abstract

The invention discloses a high-efficiency water treatment combined filler based on photocatalysis and microbiological degradation, and belongs to the field of water treatment combined fillers, by arranging a filler coil integrating photocatalytic degradation and microbiological degradation, double degradation and purification processes are synchronously performed on sewage, and an interval mode is adopted, so that the sewage treatment efficiency is improved. On one hand, the depth position of each double-effect filler in sewage is changed, the double-effect filler is irradiated by light rays at different positions, the catalytic efficiency of the light receiving rods coated with the photocatalyst layers is not prone to generating a large difference, and the photocatalytic degradation effect on the sewage is improved, and on the other hand, the photocatalytic degradation effect on the sewage is improved. In the process of position change, part of the double-effect filler can automatically adjust the self state and generate a pulling and driving effect on the elastic film covering net to which the biological film is attached, so that the biological film is locally broken, gaps are increased, the adhesive capacity of the biological film is reduced, the falling of the aged biological film is promoted, and the degradation effect of the biological film on sewage is further improved.

Description

technical field [0001] The invention relates to the field of combined fillers for water treatment, and more particularly, to a high-efficiency combined filler for water treatment based on photocatalysis and microbial degradation. Background technique [0002] The principle of photocatalysis is based on the redox ability of photocatalysts under the condition of light, which can achieve the purpose of purifying pollutants, synthesizing and transforming substances. Typically, photocatalytic oxidation reactions use semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. Therefore, photocatalytic technology is an efficient and safe environment-friendly environmental purification technology. [0003] Biological fillers for sewage treatment, generally called biological fillers or fillers, have the advantages of large specific surface area, light weight, high strength, and corrosion resistance. They are mainly used in sewage treatmen...

AI Technical Summary

Problems solved by technology

Renewal and shedding process of biofilm: With the decomposition of organic matter, the thickness of biofilm increases continuously, and the deep interior where oxygen-containing gas cannot penetrate will turn into an anaerobic state, and the anaerobic metabolites increase, resulting in anaerobic membrane and The balance between the aerobic membranes is destroyed, and the continuous escape of gaseous products weakens the adhesion of the biofilm on the filler and becomes an aging biofilm. The purification function of the aging biofilm is poor and it is easy to fall off. After falling off, the newborn organisms The membrane will grow again and continue to purify the sewage

[0004] However, both photodegradation and microbial degradation methods have certain shortcomings. In the process of photodegradation, due to the difference in the light intensity of different parts in the sewage pool, the light reception and utilization of each part of the filler are different, resulting in the loss of some fillers. The degradation efficiency is low; in the process of microbial degradation, with the continuous thickening of the biofilm, the shedding rate of the formed aging biofilm is slow, and generally only depends on its weak adhesion ability and the fluidity of the sewage to shed. Affects the generation of new biofilm, and also makes the degradation ability of the filler gradually weakened

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