If foaming is serious, dosing anti-foam chemical is the fast way to control foaming. you can check whether the foam is caused by surfactant discharged by industries. just take some influent and aerate, if you see foaming, then can we can confirm it is surfactant. if no foaming, then we can rule out the possibility. if it is not caused by surfactant, then we can optimize the operation using methods suggested by other here, such as aeration, SRT, etc.
Published by haijun fang
If foaming is serious, dosing anti-foam chemical is the fast way to control foaming.
you can check whether the foam is caused by surfactant discharged by industries. just take some influent and aerate, if you see foaming, then can we can confirm it is surfactant. if no foaming, then we can rule out the possibility.
if it is not caused by surfactant, then we can optimize the operation using methods suggested by other here, such as aeration, SRT, etc.
1 Comment
Good idea for a test, but if the surfactant came down as a slug several days ago, the Influent won't foam now. This is a great thing to do in the future as soon as foam is seen in the aeration tank - grab yesterday's and today's Influent sample and aerate it. I'll add this to my list of handy tests.
Published by Leah Miller, Wastewater Treatment Plant Supervisor / Environmental Coordinator at Foremost Farms USA