Effect of copper in wastewater on hydrolysis and aerobic processes
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To treat organic copper-containing wastewater, slaked lime is used for neutralization to adjust the pH to 7.5. Followed by flocculation and sedimentation, the clear liquid is then fed into a hydrolysis tank, with a copper concentration of 10 mg/L and a COD level of around 2000. Hydrolysis end point: Copper 3.5 mg/l. COD: around 1500. Aerobic: COD around 700. There is no copper. Does the presence of copper at the front end affect COD removal? Where does the copper go? How to adjust
The question is too technical; I don’t know how to answer it. I’ll wait for an expert
Could it be that during the aerobic stage, Cu2+ + O2 -> CuO occurs?
Let’s wait for the experts too. . . . . . . . . . . . . . .
This post was last edited by zhaolijun on 2016-3-17 at 15:03. Since iron, aluminum, and other substances are present in the aerobic environment, copper is displaced and removed from the system along with the sludge.
Copper ions have little impact on aerobic processes at concentrations below 15 mg/L. Concentrations above 15 mg/L become toxic, inhibiting the growth and reproduction of microorganisms and causing toxicity in activated sludge.