The quality of the water purified by acidic vapor stripping is not up to standard
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The stripping tower is operating normally, but the ammonia nitrogen, pH value, and sulfides levels in the purified water have suddenly increased by about 10 times. Initially, a leak in the heat exchanger was suspected, but the ammonia nitrogen, pH value, and sulfide levels in the purified water at the bottom of the tower are also very high, similar to those at the sampling points. I would appreciate any advice from experts
The pH value cannot increase by 10 times.
This post was last edited by 654262293 on 2016-1-23 06:47. Try increasing the temperature a bit; if that doesn’t work, it might be due to internal leakage in the heat exchanger or problems with the tower internals (such as clogged trays, a clogged or detached liquid distributor, etc.).
The sulfide level is 10 times above the limit, the ammonia nitrogen level is 3 times above the limit, and the pH value is around 12. After cooling down and then reheating, the conditions remain the same; could it be a problem with the raw water?
The pH value of the raw water is 9.26, with an ammonia nitrogen level of 4000 and a sulfide level of 3500； It’s pretty much the same as usual
It would be best to upload your home’s process diagram so we can check whether there are highly flammable gases generated through vaporization; that could also be the cause. Only by examining your process diagram can we determine this more accurately.
The same is true in our unit – the levels of sulfides and ammonia nitrogen remain high.: