Water treatment method combining ozone catalytic oxidation with ultra-filtration membrane

Abstract

The invention provides a water treatment method combining ozone catalytic oxidation with an ultra-filtration membrane, which relates to a water treatment method and solves the problem that the removing rate of nitrogen, phosphor, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and SS (Standard Specification) cannot reach the standards in the treatment of the water quality of the traditional urban water supply plants, the water quality of secondary discharge water of the urban sewage plants and the water recycling of industrial wastewater. The method comprises the following steps of: firstly, adding ozone to water to be treated; and secondly, treating the discharge water in the first step with the ultra-filtration membrane to complete. The water treatment method for combining ozone catalytic oxidation with the ultra-filtration membrane can effectively eliminate organic pollutant in water, odor, dull color and other pollutants, such as bacteria, virus, heavy metal, and the like, has very high depollution efficiency and can improve the treated water quality in an all-round way; the method is simple for running and easy for operation and management and can be applied to the process courses, such as the standard upgrading modification of the water quality of the urban water supply plant, the upgrading modification of the urban sewage plant, the recycling of the industrial wastewater, and the like.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] The application of ozone in drinking water treatment has a history of more than 100 years, and has now become the core technology of deep purification of drinking water. Ozone catalytic oxidation technology belongs to the category of advanced oxidation technology. It pursues the generation of more intermediate products with strong oxidation ability (such as hydroxyl radicals, OH) under the action of ozone under the action of catalyst, so as to achieve the purpose of improving ozone oxidation ability. The ultrafiltration membrane is one of the earliest developed polymer separation membranes. The industrial application of the ultrafiltration membrane is very extensive, and it has become one of the new chemical unit operations; it is a Aperture Consistent specifications, microporous filter membrane with a rated pore size of 0.001-0.02 μm, and pressure Difference Membrane...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the removal rate of nitrogen, phosphorus, COD, BOD and SS is not up to standard in the treatment of the water quality of the existing urban water supply plant, the water quality of the secondary effluent of the urban sewage plant, and the reuse of industrial wastewater. And provide a kind of water treatment method of ozone catalytic oxidation combined with ultrafiltration membrane