Treatment method of high-concentration high-ammonia-nitrogen organic sewage

Abstract

The invention provides a treatment method of high-concentration high-ammonia-nitrogen organic sewage. The treatment method comprises the following steps: (1) pretreatment: regulating the pH value of the sewage to 4-7 by using a first pH regulating device; (2) enabling the sewage to pass through a first microwave resonant cavity device pre-filled with activated carbon and copper oxide, taking the copper oxide as a catalyst and loading the copper oxide on the activated carbon, selecting hydrogen peroxide as an oxidant, and carrying out wet catalytic oxidation reaction under a microwave condition; (3) regulating the pH value of the sewage to 8-11 by adopting a second pH regulating device; and (4) enabling the sewage to pass through a second microwave resonant cavity device pre-filled with activated carbon, and carrying out ammonia nitrogen removal under a microwave condition. The treatment method has the characteristics of high removal efficiency, high speed, low energy consumption and high treatment load on the high-concentration high-ammonia-nitrogen organic sewage and can realize industrial treatment of industrial sewage and is a green treatment process of the high-concentration high-ammonia-nitrogen organic sewage with wide prospect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment and resource utilization, in particular to a treatment method for high-concentration and high-ammonia-nitrogen organic sewage. Background technique [0002] Industrial wastewater often contains organic substances that are difficult to degrade by biological methods, such as phenols, benzenes, cyanides, etc. Therefore, it is necessary to use other technical means to treat industrial wastewater. In addition, the massive discharge of ammonia nitrogen in industrial sewage has led to eutrophication of a large area of ​​water, and has also seriously endangered people's lives and health. The treatment of high-concentration ammonia nitrogen in industrial wastewater is also beyond the scope of biological treatment, and other physical and chemical techniques are required. [0003] Wet air oxidation technology is a chemical process in which refractory organic pollutants are oxidized and decomposed ...

AI Technical Summary

Problems solved by technology

[0006] 1) Ozone-coupled wet catalytic oxidation has low power utilization efficiency, high energy consumption and long reaction time;

[0007] 2) UV-coupled wet catalytic oxidation has poor treatment effect on sewage with many impurities, high turbidity and poor light transmission, high energy consumption and long reaction time;

[0008] 3) The existing ozone-coupled wet catalytic oxidation and UV-coupled wet catalytic oxidation can effectively degrade organic matter and increase the B / C ratio, but cannot significantly reduce COD; the removal effect of ammonia nitrogen from industrial sewage is not good

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