Research Progress of High-Salinity Wastewater Treatment Technology

With the continuous expansion of industrial enterprises, a large amount high-salt wastewater with complex components is produced. Direct discharge will cause great harm to ecosystem and waste potential salt resources. This paper summarizes source, water quality characteristics, environmental impact high-salinity wastewater, introduces desalination treatment technologies wastewater. The technology mainly includes two processes: concentration crystallization, obtaining concentrated solution through membrane or thermal then carrying out crystallization on solution, thereby realizing recovery salt. advanced were analyzed, including physicochemical treatment, biological coupling treatment. Catalytic ozonation one most widely used for Biological processes operating in presence halotolerant bacteria show excellent performance at high salinity. High salinity has negative various technologies. However, little effect coupled system designed treat In this review, scaling corrosion equipment also illustrated. It suggested that research direction should be develop new materials catalysts, salt-tolerant microorganisms, explore high-efficiency energy-saving physico–chemical–biochemical combination processes, improve efficiency organic reduce costs.