High-salinity comprehensive wastewater treatment system for chemical industry parks

Abstract

The invention relates to the technical field of wastewater treatment and particularly relates to a high-salinity comprehensive wastewater treatment system for chemical industry parks. The high-salinity comprehensive wastewater treatment system comprises a classified storage unit, a positive osmosis treatment unit, a pretreatment unit, a coagulating sedimentation unit, an adjusting tank unit, an intermediate temperate anaerobic unit, an aerobic reaction unit and a desalting unit. According to the treatment system provided by the invention, the treatment rate and biodegradability of a wastewaterphysical and chemical area are increased, two purposes of dilution and concentration are achieved by virtue of the energy of high-salinity wastewater, meanwhile, the problems that organic matters arehardened during the direct evaporation of front-section high-sanity and high-COD wastewater, the evaporation efficiency is reduced, and a front-end electroosmosis membrane is polluted are solved, andthe secondary utilization of waste membranes of a power plant is realized, so that the operation cost of a sewage plant is greatly lowered, and the benefit of the sewage plant is increased.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a high-salt comprehensive wastewater treatment system in a chemical industry park. Background technique [0002] Most enterprises in chemical parks are generally small-scale, with less drainage, and most of the wastewater produced is high-salt and high-COD wastewater. Due to the difficulty of wastewater treatment and the lack of professional operation personnel, they are unwilling to invest a lot of money in pollution control. Therefore, most Enterprises bring wastewater into the park sewage plant. [0003] Although concentrating the wastewater from the chemical industry park to the sewage plant for treatment has solved the problem of industrial wastewater pollution to a certain extent, the following problems exist in the actual treatment process: At present, the high-salt wastewater uses biochemical effluent desalinated water to dilute the front-stage water distribu...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive treatment system for high-salt wastewater in chemical industry parks in view of the deficiencies in the prior art. , and use the energy of high-salt wastewater to achieve the dual purpose of dilution and concentration, and at the same time solve the problem of organic matter hardening when the high-salt and high-COD wastewater is directly evaporated in the previous stage, resulting in a decrease in evaporation efficiency and pollution of the front-end electrodialysis membrane. It also realizes the waste membrane of power plants The secondary utilization of sewage greatly reduces the operating cost of the sewage plant and improves the efficiency of the sewage plant

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