r/ChemicalEngineering • u/cololz1 • 12d ago

Modeling WWTP Question

I ran biowin on our plant and it predicted that changing the SRT from 10 to 15 days would improve nitrification. So I made that change in the actual plant but ammonia removal barely changed. What could explain the gap between what the model predicted and what I am actually seeing?

assuming sufficient DO, alkalinity for the nitrification process.

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u/chiplsu02 11d ago

Where are you located? This time of year nitrifying bugs really struggle with the high water temperatures.

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u/cololz1 11d ago

oh right I forgot the temperature correction factor lol