Saline water membrane separation system for treating high-salinity high-organic substance waste water

Abstract

The invention discloses a saline water membrane separation system for treating high-salinity high-organic substance waste water. The system comprises a filter unit, a saline water membrane separator and a concentrated water circulation filter unit; the water inlet of the filter unit is connected with a to-be-treated high-salinity high-organic substance waste water inlet, the outlet of the filter unit is communicated to the saline water membrane separator, and the saline water membrane separator is provided with the concentrated water circulation filter unit; the saline water membrane separatorcomprises a top cover, an upper flange plate, a shell, a lower flange plate, a membrane component and a liquid collecting groove; the concentrated water circulation filter unit is arranged between acirculating water outlet and a circulating water spraying part. The saline water membrane separation system has a low requirement for pretreatment, and can be used for treating the high-salinity high-organic substance waste water which cannot be treated by reverse osmosis; the membrane has strong anti-pollution capacity, and the separator has the characteristics of high temperature resistance andcorrosion resistance; the system has a simple and compact structure, and is energy-saving, environment-friendly and easy to operate.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a brine membrane separation system for treating wastewater with high salinity and high organic matter. Background technique [0002] Petrochemical, coal chemical, metallurgy, pharmaceutical, printing and dyeing, papermaking and other industrial production processes produce a large amount of high-salt and high-organic waste water, usually with a salt content of more than 3000mg / L, a COD concentration of more than 2000mg / L, and a high temperature. And it contains a large amount of toxic and harmful organic substances such as aromatic compounds, heterocyclic compounds, hydrocarbon compounds, etc., if directly discharged, it will not only cause waste of resources, but also cause environmental pollution. Therefore, realizing the brine separation and recycling of high-salt and high-organic waste water is not only the development trend of various industries but also the ine...

AI Technical Summary

Problems solved by technology

[0003] The existing ultrafiltration + reverse osmosis double-membrane process has disadvantages such as strict requirements on influent water quality, easy pollution of the membrane, unstable operation, low recovery rate, large power consumption, and large amount of concentrated water.

Images