EBPR With Struvite Recovery to Reduce Chemical Consumption and Increase Nutrient Removal Reliability
South Cross Bayou Water Reclamation FacilitySt. Petersburg, Florida
Two alternatives were investigated for reducing chemical addition at a water reclamation facility with regional anaerobic digestion recycle streams: 1. the MLE process with alum addition for P removal and denitrifying filters for N removal (MLE alternative), and 2. the 5-stage Bardenpho alternative process for enhanced biological phosphorus removal, activated sludge biological denitrification using methanol addition and the Ostara struvite-recovery recycles treatment process. The 5-stage Bardenpho alternative resulted in annual cost operational savings of $640,000-$800,000 compared to MLE alternative, a 13- to 18-year payback period, reduced chemical and electrical energy consumption, and increased net digester methane gas production. Source: WEFTEC Proceedings 2009
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Posted: June 25th, 2010 | Filed under: Waste Water Treatment, Water Treatment | Tags: Cost Savings, Improved Sludge Handling | No Comments »