When designing the evaporation crystallization process for the coexistence of sodium sulfate and sodium chloride, how should the concentration of the waste brine discharged be determined?
Thread Content
When designing the evaporation crystallization process for the coexistence of sodium sulfate and sodium chloride, how should the concentration of the waste brine discharged be determined? Can one only choose based on the equilibrium points at 108 degrees or 100 degrees stated in the manual?
Everything has evaporated and crystallized; where is there any mother liquor to be discharged?
The mixed salt mother liquor can be directly dried using a dryer, specifically designed to support zero-emission projects.
Which company makes such equipment? Thank you.
Search on Baidu; there are many manufacturers that produce rollers
We used the double-effect evaporator from Hebei University of Technology to extract salts from sodium sulfate; the processing capacity is around 3 tons per hour. Through two stages of evaporation, the initial concentration of 5% Na2SO4 was increased to 13% and then to 25%. The concentration of the mother liquor discharged was approximately 22%, but we’re not sure exactly how that value was determined
Theoretical calculations show too high values; in practice, everything is separated, and the mother liquor is recycled, with sodium sulfate and sodium chloride being the only products obtained