Control of Nocardia in a Municipal Activated Sludge Facility

by John D. Dietz, Univ of Central Florida, United States,
Julius F. Charba, Univ of Central Florida, United States,
Robert K. Anderson, Univ of Central Florida, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


The paper reports on a study to determine the cause(s) of the biological imbalance and identify corrective measures. Project activities included: isolation and identification of filamentous organism(s); determination of solids handling capacity of activated sludge final clarifiers; return sludge chlorination for filament reduction; operation of bench-scale reactors at variant growth rates for species selection; and operation of full-scale facility at alternate growth rates for species selection. Study results are discussed.

Subject Headings: Local government | Sewage | Biological processes | Clarifiers | Chlorine | Benchmark | Bacteria | Wastewater treatment plants

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