How to deal with the blackening of salt-containing wastewater from electrodialysis?
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Almost all kinds of methods have been tried
I don’t understand what you mean by that Interpreted literally from your question, you simply want to treat these wastewater to a level where it is not severely black, rather than treating it to the point where it can undergo further processing or meet discharge standards. Just find a way to bleach it.
Is the water black, or are there oil residues in the water?
I’m not sure if there’s any way to prevent saline wastewater from turning black through operational measures
The water has turned black; no sample analysis was done – what is contained within it?
I haven’t done it; I poured black liquid on the ground and let it dry, leaving a thin layer of darkness on the surface
The impurity level in the tank is high, mainly due to carbon deposits and sludge; it is necessary to enhance online cleaning