Device for refining industrial salt from high-salinity wastewater

Abstract

The invention discloses a device for refining industrial salt from high-salinity wastewater. The device comprises a raw water tank, and the raw water tank is communicated with an ozone oxidation tankthrough a first water pump; an outlet of the ozone oxidation tank is communicated with an ultrafiltration unit through a second water pump; a water outlet of the ultrafiltration unit is communicated with an ultra-filtration water production tank through a pipeline; the ultrafiltration water production tank is communicated with a first security filter through a third water pump; the first securityfilter is communicated with a first nanofiltration unit through a fourth water pump; a concentrated water outlet of the first nanofiltration unit is communicated with a first nanofiltration concentrated water tank through a pipeline; the first nanofiltration concentrated water tank is communicated with a second security filter through a fifth water pump; and the second security filter is communicated with a second nanofiltration unit through a sixth water pump. The device for refining the industrial salt from the high-salinity wastewater has the advantages that the capability and effect of refining the industrial salt are greatly improved, the utilization rate of the high-salinity wastewater is guaranteed, the enterprise wastewater treatment cost is effectively lowered, and environmental protection and industrial management of enterprises are facilitated.

Description

Technical field [0001] The invention relates to the technical field of wastewater salt production, in particular to a high-salt wastewater refining industrial salt device. Background technique [0002] The former is in the field of zero-discharge treatment of high-salt wastewater, with a wide range of areas facing the northwest and other scarce areas and some coastal areas without natural water bodies to receive sewage. The implementation of zero sewage discharge technology in this part of the region has beneficially protected the local water environment and curbed the occurrence of water pollution accidents. The current problem is that many companies' circulating cooling water plant sewage and concentrated water produced by reverse osmosis water production devices have been treated by zero-discharge facilities, and a large amount of mixed salt (miscellaneous salt) is produced, and the purity of salt is generally not high. , There is no reusable value, so it is very economical t...

AI Technical Summary

Problems solved by technology

The current problem is that the sewage from the circulating cooling water field of many enterprises and the concentrated water produced by the reverse osmosis water production device, after being treated by zero discharge facilities, a large amount of mixed salt (miscellaneous salt) is produced, and the purity of the salt is generally not high. , there is no reusable value, so it is very economical to use a high-efficiency salt separation technology to extract internal high-purity salts

[0003] At present, there is no relevant technical solution for the high-salt wastewater refining industrial salt technology, especially for the concentrated water produced by the circulating cooling water field sewage and the reverse osmosis water production device. Salt technology, the purity of the separated salts is not high, the purity of sodium chloride and sodium sulfate is only about 80%, the value of industrial use is very low, it is not conducive to the treatment and utilization of high-salt wastewater, the economic benefit is low, and the environmental protection cost is high. Conducive to enterprise management and development

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