【Help】Wastewater treatment methods for chlorinated/sulfate-containing wastewater
Thread Content
The wastewater I am currently dealing with has a high salt concentration as well as a high COD level; specifically, the values are around 20 g/L for Cl, 40 g/L for SO4, and 40 g/L for COD. Due to the extremely high COD level, membrane treatment gets clogged. High levels of chlorides and sulfate ions also affect COD removal. I’m curious to hear everyone’s insights on how to deal with such wastewater. Thank you!
The salt content has already reached over 100 g/L; membrane treatment is basically not an option, as the salt concentration in seawater is only around 35 g/L； It is recommended to use evaporation concentration.
The key question is: how much water is there? If the water volume is too large, evaporation and incineration become impossible.
Yes, the amount of water is too large; in my opinion, evaporation isn’t a wise approach. So, I think this is also the current bottleneck in the treatment of inorganic salt wastewater
High-salt wastewater has a significant impact on microorganisms, even causing their death; therefore, biochemical treatment is not recommended. Multiphase concentration evaporation treatment.