Page 19 - Simplified Wastewater Treatment Fundamentals\Operator Rounds

Operator Facility Rounds

High Flow Rounds Cont.

Screens

Screens typically run more often during high flow periods. The collection system can

release a lot of grease, grit and debris ending up on the screens. Large debris captured on

the screen and not removed automatically, or by hand can result in damming and a

wastewater overflow.

Grit

Sand and grit can be washed from the collection system causing an abnormally high

amount of grit flowing into the facility. Grit removal production is often higher during high

flow periods, requiring close monitoring of the bin or dumpster.

Clarifier Blankets

Primary or Secondary blankets can rise during high flow periods. Sustained high flow can

cause the sludge blankets to escape the clarifiers resulting in rapid deterioration of the

effluent quality. High Flow Rounds should require frequent blanket depth measurements to

account for blanket levels.