COLUMBUS BIOSOLIDS FLOW-THROUGH THERMOPHILIC TREATMENT (BFT³) AS A COST EFFECTIVE MEANS TO ACHIEVE CLASS A DIGESTION

Authors: Willis, John; Aitken, Michael; Arnett, Cliff; Hull, Ted; Schafer, Perry; Sobsey, Mark; Turner, Billy

Source: Proceedings of the Water Environment Federation, WEF/AWWA/CWEA Joint Residuals and Biosolids Management 2003 , pp. 629-638(10)

Publisher: Water Environment Federation

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Abstract:

Like many utilities across the country, the Columbus Water Works (CWW - Columbus, Georgia) has found access to previously available lands for Class B biosolids application becoming increasingly limited. In response to these concerns, CWW considered a number of processes to further reduce pathogens (PFRPs) and operational options for achieving Class A biosolids quality allowed in the 40 CFR, Part 503 regulation¹. A new, potential Class A process was identified to be very cost effective for retrofit to a treatment plant with existing anaerobic digesters. Development of a new Class A process (PFRP equivalent process) would require considerable research effort and negotiation with the Pathogen Equivalency Committee (PEC) of the United States Environmental Protection Agency (USEPA); this was determined to be worth the investment based on the potential capital and operational savings that would result from nation-wide application of the new technology. The treatment technology has been named “Biosolids Flow-Through Thermophilic Treatment” (BFT³). This paper provides an overview of the BFT³ process, discussion on CWW's approach to developing the process, and preliminary pathogen testing data from the investigation.

Document Type: Research article

DOI: http://dx.doi.org/10.2175/193864703784292034

Publication date: 2003-01-01

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Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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