Investigation on the quality of wastewater discharged from treatment plants
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What is the COD level of the wastewater from coking plant treatment in different regions? Ammonia nitrogen? What process is being used? The COD level in our plant is 80–120 mg/l, with no advanced treatment applied. Ammonia nitrogen: below 10 mg/l. Process: SDN (Sande)
The COD level of the wastewater treated meets the standard, ranging from 100 to 120 mg/l； Ammonia nitrogen is in the range of 10–25 mg/l ； The process used is AAO
Our unit and the original poster use the same process, and the water quality produced by the design unit is identical. Could the poster please talk about the operation status of water treatment at your organization?
Our factory uses the A2/O process; the ammonia nitrogen level is generally below 10 mg/l, while the COD is relatively high, at around 160 mg/l.