Decreased Filter Run Volume Investigation Leads to an Unlikely Culprit
Publication: AWWA - Opflow
![](https://www.tighebond.com/wp-content/uploads/2020/01/Opflow-Decreased-FRV-Investigatin-Leads-to-Unlikely-Culprit-002-231x300.jpg)
PWTF staff makes a discovery in the filter effluent valve.
Abstract: After a New York plant was converted to biofiltration, staff initially thought hot summer temperatures, new procedures, and other factors were decreasing filter run volumes. But when the plant couldn’t reach design-rated capacity, an evaluation revealed a deposit obstructing the filter effluent valve. Discover how this problem was solved.
Author: Erin K. Moore, PE, Tighe & Bond, Inc.
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