Seek treatment processes for wastewater with high ammonia nitrogen levels
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Our company has a project with a daily water treatment capacity of 150 tons. The COD level in the incoming water is around 10,000 mg/L, while the ammonia nitrogen level is around 2,500 mg/L. By using coagulants for flocculation and sedimentation, the COD level can be reduced to around 1,000 mg/L, but the ammonia nitrogen level remains unchanged. We are seeking advice from experts on an appropriate process that can remove both ammonia nitrogen and COD, so that the quality of the treated water meets the standards of COD below 500 mg/L and ammonia nitrogen below 35 mg/L
What kind of wastewater is this, and what flocculant is being used? Flocculants can remove 90% of COD
Well, actually, a specific evaluation of the design plan is needed, taking into account changes in water quality. Generally, your current situation is acceptable; just looking at the data, they’re not very high, and the biochemical parameters are usually within the required range
With ammonia nitrogen at 2500 milligrams per liter, it’s difficult to carry out biochemical treatment; it’s better to first use air stripping to remove ammonia. The ammonia nitrogen level should be reduced to below 100 before proceeding with biochemical treatment. However, it’s not known what the specific biodegradability is, so it’s difficult to plan the subsequent processes.
I noticed that too – wow, flocculation and sedimentation can remove such a large amount of COD
If the poster needs it, please contact me further at QQ640460408
Ammonia is removed by air stripping, while organic compounds such as phenols are removed by extraction. If the salt content is low, the mixture proceeds to biological treatment processes; if the salt content is high, membrane concentration is used, followed by MVR evaporation to produce salt
We specialize in this area and can develop a customized solution for you. If you are interested, we can discuss it further