What is the best way to treat high ammonia nitrogen wastewater?
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The COD is around 2000, the ammonia nitrogen is around 3000, and the water volume is around 100t/day. Is there any good way to remove ammonia nitrogen? Because it is not cost-effective to use distillation recovery, is there any other better way?
It can be blown off first and then regenerated or treated by other methods, but the cost of blowing off is also quite high.
Biochemical treatment: Denitrification and biological oxidation.
With such a high level of ammonia nitrogen, I don’t know what kind of process the poster’s wastewater is. From what the poster said, it can be recovered by distillation. I guess it is volatile ammonia nitrogen. You can consider adjusting the pH to be alkaline for stripping or using membrane absorption.
Agree with the 2nd floor, you can read this post. http://bbs.hcbbs.com/viewthread.php?tid=96937&highlight=%B0%B1%B5%AA%B7%CF%CB%AE
An environmental protection treatment system that combines anaerobic and then aerobic combinations. The former treats COD, and the latter mainly solves ammonia nitrogen. For more money, you can directly choose a complete set of environmental protection technologies from Dutch manufacturers.
In this concentration range and this amount of water, it is very reasonable to use permeable membrane desorption-chemical absorption to remove/recover ammonia.
Personally, I think the ammonia treatment should be carried out first before entering the biochemical treatment stage, otherwise the high ammonia nitrogen content will poison the subsequent nitrification-denitrification bacteria. Furthermore, ammonia is easy to volatilize in the open air, which will also cause environmental pollution.
A new technology called short-cut nitrification and denitrification can be used, which not only saves energy and land, but also does not require additional carbon sources.