Method and complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises

Abstract

The invention discloses a method and a complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises. According to the method and the complete device disclosed by the invention, by introducing a catalytic oxidation method, a high-efficiency biochemical process and an ion exchange technique, high-efficiency removal of refractory organic substances and substances easily scaling such as calcium and magnesium in the reverse osmosis concentrated water is realized, and the problems of pollution of a high-pressure reverse osmosis membrane and scaling of an evaporation system are effectively solved. In an MnO2-CeO2-CoO / AC catalyst in the catalytic oxidation method, the ratio of weight parts of MnO2, CeO2, CoO toand AC is (1 to 10):(0.1 to 1):(0.1 to 1):100; a whole treatment system does not discharge sewage to the outside, and all components are recycled for process water, supplementary water of circulating cooling water and the like of coal chemical industry, so that the zero-tendency discharge of the reverse osmosis concentrated water of the coal and chemical engineering enterprises is realized, and secondary pollution to the environment is avoided.

Description

technical field [0001] The invention belongs to a reverse osmosis concentrated water treatment system of a chemical enterprise, and in particular relates to a method and a complete set of equipment for a coal chemical enterprise to discharge reverse osmosis concentrated water towards zero. Background technique [0002] The reverse osmosis concentrated water of coal chemical enterprises is the concentrated water produced after the mixing of process wastewater and domestic sewage in the factory area after conventional secondary treatment and advanced treatment of reverse osmosis membrane system. The water quality is characterized by high salt content, high content of refractory organic matter, biochemical Poor properties, high carbonate alkalinity, high hardness, direct discharge will cause serious pollution to the environment. [0003] Since the reverse osmosis concentrated water of the coal chemical industry contains a large amount of salt, it is impossible to further concen...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of existing reverse osmosis concentrated water recovery technology in coal chemical enterprises, and propose a reverse osmosis concentrated water discharge system and device for coal chemical enterprises, through the introduction of catalytic oxidation method, high-efficiency biochemical method and ion exchange The technology realizes the efficient removal of refractory organic matter and calcium and magnesium and other easy-to-scale substances in reverse osmosis concentrated water, and effectively alleviates the high-pressure reverse osmosis membrane fouling and scaling problems of the evaporation system. The entire treatment system does not discharge sewage outside, and all parts The quality is reused for coal chemical process water, circulating cooling water replenishment water, etc., realizing zero discharge of reverse osmosis concentrated water in coal chemical enterprises

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