If the ammonia nitrogen level in the effluent is higher than that in the influent, how should it be adjusted?
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Dear HaiChuan technicians, the ammonia nitrogen level in the water has been between 20-30 recently； Ammonia nitrogen in the effluent: 40-50 ； The incoming water COD is around 800 ； Some people believe that amine solution has entered the sewage system, preventing degradation in the biological treatment stage; however, the ammonia nitrogen and sulfides levels in the incoming water are not high, and no evidence of amine solution being discharged into the sewage system has been found ； What causes high ammonia nitrogen in the effluent? How to adjust it? Please advise! I forgot to mention that we are a petrochemical company.
Test the ammonia nitrogen level in each tank to determine which one is having the problem.
Another possibility is excessive aeration, during which nitrifying bacteria convert large amounts of organic matter into nitrogen-containing compounds, resulting in elevated ammonia levels. The solution is to reduce the aeration volume relatively.
As the water temperature in Dongting Lake drops, the activity of nitrifying bacteria decreases; measures such as increasing the sludge concentration can be taken
The water temperature is within the normal range, between 20-25 degrees!
1. It is possible that the organic nitrogen content in the incoming water has surged, resulting in an ammonification rate that exceeds the nitrification rate; ammonification thus becomes dominant, leading to a higher ammonia nitrogen level in the effluent compared to that in the incoming water. 2. The increase in organic matter content leads to the suppression of autotrophic bacteria (nitrifiers), reducing the rate of nitrification and resulting in high ammonia levels in the effluent. 3. A low pH value also suppresses the nitrification process, causing the ammonia level in the effluent to be higher than that in the inlet water