Evaluating Activated Sludge Secondary Clarifier Performance: A Protocol

by E. J. Wahlberg, County Sanitation Districts of Los, Angeles County, Whittier, United States,
M. Augustus, County Sanitation Districts of Los, Angeles County, Whittier, United States,
D. T. Chapman, County Sanitation Districts of Los, Angeles County, Whittier, United States,
C. Chen, County Sanitation Districts of Los, Angeles County, Whittier, United States,
J. K. Esler, County Sanitation Districts of Los, Angeles County, Whittier, United States,
T. M. Keinath, County Sanitation Districts of Los, Angeles County, Whittier, United States,
D. S. Parker, County Sanitation Districts of Los, Angeles County, Whittier, United States,
R. J. Tekippe, County Sanitation Districts of Los, Angeles County, Whittier, United States,
T. E. Wilson, County Sanitation Districts of Los, Angeles County, Whittier, United States,



Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment

Abstract: To establish a consistent methodology for evaluating secondary clarifier performance, the ASCE Clarifier Research Technical Committee prepared procedural guidelines in the form of a draft protocol. This protocol was evaluated in a field study during which four clarifier configurations at three full-scale activated sludge facilities were tested. Based on the experience gained in this study, the protocol was revised. An overview of the revised protocol is presented.

Subject Headings: Clarifiers | Activated sludge | Field tests | Industrial wastes | Wastewater treatment

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