Removal of wastewater with high COD and high NH3-N levels
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Pollutant factors: Influent water quality – CODCr (mg/L): 80,000; SS: 300; NH3-N: 70,000; Petroleum content: 100; pH: 7–9. Treatment efficiency and discharge requirements: Pollutant factors – Effluent water quality – CODCr (mg/L): 500; SS (mg/L): 100; NH3-N: 200; Petroleum content: 30; pH: 7–9. Last edited by johncom on 2009-3-6 at 10:15
Upstairs, the water has a high COD level, contains oil, and has very high ammonia nitrogen levels. It’s difficult to treat it using conventional methods. It is recommended to remove the oil first, followed by ammonia removal through air stripping; the ammonia can be reused via absorption methods. The remaining water should be treated using physical-chemical and biological methods. I’m not sure what you think – this is just for reference.
I agree with what was said on the 2nd floor. However, this type of water is really difficult to find, and it’s also hard to deal with; the process is lengthy. It’s necessary to consult professional design firms or environmental engineering companies to develop plans and conduct evaluations, in order to determine the final treatment method – one cannot act blindly.
The treatment process for coking wastewater generally involves oil removal through filtration first, followed by ammonia evaporation, then coagulation and clarification, and finally biochemical treatment in a biological tank