Year-end Sale % OFF 
Abstract
Reducing salt wastewater emissions to the outside world is significant for the “zero discharge” requirement of coal chemical industry. This review is mainly about the treatment technologies of salt-containing wastewater and high-salt wastewater in coal chemical industry of China. In the treatment of high-salt wastewater, coal chemical industry projects in China mostly use the “double membrane” reuse technology of “ultrafiltration + reverse osmosis”. Reverse osmosis is the core and main technology of reuse treatment, while ultrafiltration is the pretreatment and protection process. High-salt wastewater refers to the concentrated reverse osmosis wastewater of the reuse system. Evaporation crystallization technology can achieve “zero discharge” of wastewater by transforming high-salt wastewater into solid crystal mixed salt. It is a mature and recognized process at present stage, but the disposal of mixed salt is an urgent problem to be solved. Cooling crystallization and nanofiltration membrane can realize separation of mixed salt, but these technologies have not been applied to actual coal chemical project, and further research is needed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
