Chromium-containing wastewater contains small amounts of copper; how should nickel wastewater be treated to ensure that the levels of copper, nickel, and chromium are within acceptable limits?

2016-03-09View Original

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Chromium-containing wastewater contains small amounts of copper; how should nickel wastewater be treated to ensure that the levels of copper, nickel, and chromium are within acceptable limits?

Reply #22016-03-09

Consider using chelating resins to separate copper and nickel

Reply #32016-03-09

Could you provide specific details on using chelating resins to separate copper and nickel?

Reply #42016-03-09

First, reduce the high-valent chromium, then add Na2S to precipitate it.

Reply #52016-03-10

Try treating it with micro-electrolysis. I have conducted experiments on wastewater containing around 10–20 mg/l of copper, nickel, and chromium; after treatment, the concentration of these substances in the effluent was below 0.5 mg/l

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