Sewage treatment system adopting photocatalytic degradation membrane separation

Abstract

The invention discloses a sewage treatment system adopting photocatalytic degradation membrane separation and relates to the technical field of membrane separation sewage treatment. The sewage treatment system comprises a double-layered pipe type ceramic membrane, wherein an ultraviolet lamp tube is arranged between inner and outer membranes of the double-layered pipe type ceramic membrane; nano-photocatalysts are arranged on the outer surface of the inner membrane and the inner surface of the outer membrane; the double-layered pipe type ceramic membrane adopts a filtering manner from outsideto inside and treated water is output from an inner cavity of the inner membrane of the double-layered pipe type ceramic membrane; hydrogen peroxide is input into an inner cavity between the inner andouter membranes; under the irradiation of ultraviolet light, the hydrogen peroxide has photo-Fenton reaction under the action of a catalyst to stimulate a lot of hydroxyl free radicals, so that pollutants are degraded. According to the sewage treatment system disclosed by the invention, high-concentration organic wastewater is selectively degraded; the degradation efficiency is high and the degradation is complete; nano-grade catalysts in a reaction liquid system can be recycled, and constant and catalytic properties of the catalysts in a reactor are kept; the system is continuously, effectively and stably operated and the anti-pollution performance and service life of the membrane are improved.

Description

technical field [0001] The invention relates to the technical field of membrane separation sewage treatment, in particular to a sewage treatment system using photocatalytic degradation membrane separation. Background technique [0002] In recent years, photocatalytic technology has received widespread attention in the field of refractory wastewater treatment, and is considered to be one of the most promising technologies for controlling refractory organic pollutants in water bodies. It has been widely used in textiles, dyes, coking, medicine, etc. waste water treatment. Although domestic and foreign sewage treatment technologies have achieved certain results, the low utilization rate of light sources and the low removal rate of pollutants in photocatalytic sewage treatment technology are still problems that need to be solved urgently. Therefore, it is very important to design a photo-Fenton catalyst that can efficiently respond to visible light, and use corresponding scale ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a nano-scale catalyst that can selectively degrade high-concentration organic wastewater, has high degradation efficiency, complete degradation, and can recover the reaction liquid system, so that the system can continue to operate effectively and stably, and improve the pollution resistance of the membrane. A photocatalytic degradation membrane separation sewage treatment system with long service life, to solve the technical problems of low light source utilization rate, incomplete degradation of organic matter and short service life of the separation membrane in the existing photocatalytic sewage treatment technology described in the above background technology

Images