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Quantification of Occurrence and Fate of Trace Organic Compounds During Secondary Wastewater Treatment

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This paper presents preliminary findings of a WERF funded study on Trace Organic Compounds Removal during Wastewater Treatment. The overall goal of this study is to assess the performance of secondary treatment processes for TOrC removal based on selected TOrC indicator compounds. In the first phase full-scale sampling events were conducted at several facilities in an effort to establish mass balances on TOrC removal during secondary treatment and to relate removal efficiencies qualitatively to the respective operational conditions.

Preliminary findings of the full-scale investigations support the selection of TOrC indicators as promising in that the selected TOrC were detected and generally quantifiable in the secondary influent and effluent of all field sites. Mass balance calculations were successfully established quantifying removal by degradation and sorption for each TOrC at the three sites. Meaningful relationships were established between compound properties (degradability and amenability to sorption) and removal efficiencies during different treatment conditions.

Keywords: activated sludge; degradation; emerging contaminants; high purity oxygen; mass balance; membrane bioreactor; removal; secondary treatment; sorption; trace organic compounds; wastewater treatment

Document Type: Research Article


Publication date: 2010-01-01

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