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
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
Publication date: 2003-01-01
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