Absorption catalysis purification separation composite function film for removing contaminant in water and water purification method

Abstract

The invention relates to a composite functional membrane with adsorption, catalytic purification and separation functions for removing pollutants from water, belonging to the technology field of environment and chemical engineering. The method comprises the steps of doping titanium oxide and other coating separation membranes in adsorbing materials (carbon materials, inorganic materials and molecular imprinting materials to obtain a composite functional membrane with adsorption, catalytic purification and separation functions; and adsorbing pollutants with the membrane, separating, oxidizing and mineralizing the absorbed pollutants to regenerate the purification and adsorption functions of the membrane. The inventive method improves pollutant adsorption and catalytic oxidation efficiency;and preventes the pollution of oxidized byproducts to the quality of effluent water after membrane separation, so as to be safer when being used for drinking water purification. The inventive method has the advantages of high efficiency, complete removal of pollutants, low pollution and low energy consumption; and can be used for purifying water bodies such as slightly polluted water, recycled water or water containing low-concentration trace organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of environment and chemical engineering. The invention relates to water body purification, in particular to a method for membrane separation and catalytic oxidation water body purification treatment. Background technique [0002] Water purification often adopts biotechnology, advanced oxidation technology, membrane separation technology and adsorption purification technology: microorganisms degrade organic pollutants and finally convert them into carbon dioxide, reducing TOC in water. Membrane separation can intercept pollutants in water and purify the effluent. Depending on the membrane pore size of the membrane separation, the molecular weight of the intercepted pollutants decreases with the decrease of the pore size; the operating pressure of the membrane separation increases with the decrease of the pore size, and the energy consumption also increases. The molecular weight cut-off of nanofiltration rev...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the purification effect of micro-polluted organic toxic molecules in water and the treatment efficiency of micro-polluted water through the preparation and use of catalytic adsorption separation composite membranes, so as to solve the problems of membrane pollution and regeneration of membrane adsorption performance. Efficiently remove and purify toxic pollutants to improve drinking water safety