A method for treating high-concentration alkaline resin desorption liquid by catalytic ozonation technology

Abstract

The invention discloses a method for treating high-concentration alkaline resin desorption liquid by a catalytic ozonation technique, and belongs to the field of wastewater treatment by the ozonationtechnique. The method includes the steps: (1) enabling industrial wastewater to enter a wastewater adjusting tank to perform biological treatment, and discharging biochemical tail water after biological treatment; (2) conveying the biochemical tail water into ion exchange resin to perform resin adsorption and desorption treatment; (3) performing alkali liquor elution on the ion exchange resin after resin adsorption and desorption treatment, and recycling alkaline resin desorption liquid; (4) adding the aluminum chloride and ozone into the recycled alkaline resin desorption liquid to perform ozone catalyzed oxidation treatment; (5) adjusting a pH (potential of hydrogen) value of the resin desorption liquid after ozonation to reach 6-8, performing flocculant precipitation, and conveying theresin desorption liquid into the wastewater adjusting tank to be circularly treated. According to the problem that biochemical treatment of existing high-concentration alkaline resin desorption liquidis difficult as alkalinity is high. According to the method, the high-concentration alkaline resin desorption liquid is treated by the catalytic ozonation technique, and the biodegradability of the resin desorption liquid can be improved.

Description

technical field

[0001] The invention belongs to the industrial field of wastewater treatment by ozone oxidation technology, and relates to a method for treating high-concentration alkaline resin desorption liquid by catalytic ozone oxidation technology. Background technique

[0002] In recent years, the problem of water pollution in my country has become increasingly serious. With the rapid development of economy and society, water pollution in some river basins is showing a trend of increasing. Various complex pollutants lead to the decline of water environment quality, the damage of water ecosystem, and the increase of environmental hidden dangers. On the one hand, water resources are scarce in the central, western and northern areas, which require advanced treatment of urban sewage and industrial wastewater to increase the recycling rate. On the other hand, the problem of drinking water safety has become increasingly prominent. There are more and more trace organic pollu...

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