Chloride is a common inorganic anion in dye wastewater, ranging from 1.5 to 80 g/L. Could you please give me some suggestions for chloride removal in both industrial scale and lab scale? Thanks~
Sometimes the solution can be reached through a changing of focus. Why do you need removing chloride? For the aim of posterior abatement of dyes there are some technologies which may be operated without removing chloride.
Thanks. Biological method is ineffective in the presence of high content of chloride. Is there any good suggestion for saline dye wastewater treatment?
The choose of process and technology depend on which target you want to achieve. Chloride removal? COD reduction? or both? If only COD reduction, AOP would be my prior choice.
I would suggest that we have to go back to clarify the target, just like Dr. Luna said. Chloride removal is possible, but the purpose of chloride removal? for chloride reuse? or reducing salinity to make biological treatment possible?
It is to reduce salinity of wastewater to make biological treatment feasible,,,
I would not suggest salinity reduction unit as your first treatment method because I think only evaporator can match your requirement; however, when evaporator is once used, then you also do not have to worry about the COD. RO and EDR can be utilized in salinity reduction, but I do not think it can work well in high salinity dye wastewater (up to 80g/L) which you mentioned.
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