When it comes to the impact of ammonia nitrogen in water, this situation is generally encountered by industrial wastewater or industrial wastewater entering the domestic wastewater pipe network system, which may be because the upstream stripper control temperature is reduced, which will lead to a sudden increase in ammonia nitrogen in the water, the nitrogen removal system crashes, and the situation exceeds the standard!

Specific Analysis

At present, there is no clear explanation for ammonia-nitrogen impact. The author analyzed that ammonia-nitrogen impact is caused by too high free ammonia (FA) in water. Although FA (free ammonia) has a weak influence on AOB (ammonia-oxidizing bacteria/nitrite bacteria), However, when the concentration of FA (free ammonia) is between 10 and 150mg/L, it begins to inhibit AOB (ammonia-oxidizing bacteria/nitrite bacteria), while free ammonia (FA) is more sensitive to NOB (nitrite-oxidizing bacteria/nitrate bacteria). Free ammonia (FA) can inhibit NOB (nitrite oxidizing bacteria/nitrate bacteria) at 0.1~60mg/L. As we all know, nitrification reaction is jointly completed by nitrite bacteria and nitrate bacteria, and the inhibition of nitrite bacteria can directly lead to the collapse of the nitrification system.

The solution is to ensure the PH, the following three at the same time: 1, reduce the ammonia nitrogen concentration in the system; 2, adding the same type of sludge; 3. Suffocate. This effect is obvious!

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