Research and Application of Zero Discharge Treatment Technology for Concentrated Brine in the Steel Industry
In the production process of the steel industry,a large amount of saline wastewater is generated.After the first stage of membrane treatment,the concentration of salt and organic matter in the concentrated water is high.Treating the concentrated salt wastewater well can not only save water resources,reduce environmental pollution,but also achieve the goal of resource utilization.Based on this,the treatment process of zero discharge of concentrated salt water using"primary pretreatment+membrane concentration+secondary pretreatment+nanofiltration salt separation+evaporation crystallization"is introduced.The various process units and indicator parameters are discussed,in order to provide reference for relevant research.
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