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Bacterial Oxidation of Wastewater

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Could someone please explain why in wastewater treatment that the oxidation of nutrients such as NH3 to NO ---> NO2 ----> NO3 occurs more completely at pH above 7.0 as opposed to pH below 7.0?

In practice, the oxidation of ammonia (NH3) to nitrate (NO3) --- which is what we want --- definitely seems to occur better and faster at a pH of 8.0 for instance vs. a pH of 6.0.

Can someone explain this phenomena of oxidation in wastewater?

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Solution Summary

This solution describes how the pH of wastewater affects the bacterial oxidation of nitrogen in this wastewater.

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The oxidation of ammonia in wastewater depends on the ability of two bacteria in two stages.

In the first stage, the ammonia is converted to the nitrite ion by a bacteria named Nitrosomonas. This bacteria survives at a pH range of 7.8-8.0. When ...

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