What parameters should be monitored when electroplating wastewater, after pretreatment, enters the biochemical tank?
Thread Content
The company is now planning to change its wastewater treatment process. After the pretreatment of chromium and nickel-containing wastewater ensures that the concentration of heavy metals is below 01 mg/L, biochemical tanks will be used to reduce the COD level. What parameters should be monitored before sending the pretreated wastewater into these biochemical tanks? I earnestly ask for your guidance, esteemed seniors!
It is important to ensure that the concentration of cyanides does not exceed 5 ppm, and to be careful that the concentration of copper ions is not too high.
The challenge in electroplating wastewater lies in ensuring the proper discharge levels of heavy metals; once this issue is resolved, there are no major problems in achieving the required discharge standards through biochemical treatment processes (anaerobic or hydrolysis-acidification + aerobic treatment).