Research Review on Recycling Process of Sodium Sulfate-Rich Wastewater
Many chemical processes will produce large sodium sulfate wastewater,and the directly discharged sodium sulfate-rich wastewater will have a considerable negative impact on the environment,so its resource recovery has important economic and environmental benefits.The treatment methods of sodium sulfate-rich and high-salt wastewater include evaporation crystallization method,solution double decomposition method,electro-membrane method and biological method.In this paper,the research status and existing problems of these four methods in treating sodium sulfate-rich wastewater and recycling were discussed,and the industrial prospect of treating sodium sulfate wastewater in the future was prospected.
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