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BNR Process Selection for the Broomfield Wastewater Reclamation Facility (BWRF), Broomfield, Colorado

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Four approaches were examined to convert the existing activated sludge process to complete biological nutrient removal (BNR) and expand treatment throughput from 5.4 to 8.0 mgd. The approaches evaluated were (1) on/off aeration, (2) integrated fixed film activated sludge (IFFAS) with upstream anoxic basins, (3) post nitrifying and denitrifying (post N/DN) moving bed biofilm reactors (MBBR) and (4) post N/DN submerged biological filters (SBFs). Each approach included upstream anaerobic basins for optimizing biological phosphorus uptake by the mixed liquor in the aerobic portion of the process. Based on the estimated capital and operating costs, as well as space constraints at the site, IFFAS was selected as the most suitable approach toward expansion.

Document Type: Research Article


Publication date: 2001-01-01

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