Hypochloric acid is injected into the sand filters for cleaning of the sand bed.
Impellers were being replaced every six months. This application at a waste water treatment facility is used as an aid to the settling of biological floc. The All-Flo pump is used by the waste water treatment facility to pump polymer to the secondary clarifiers when the sludge is bulking. By adding polymer the city's waste water treatment facility is able to remain in compliance with the National Pollutant Discharge Elimination Permit. By using the ALL-FLO pump the polymer is administered more consistently than the previous method of slug dosing the clarifiers.