http://sustainabilityarchive.com a Compendium of Successful Sustainability Practices Fri, 27 May 2011 16:30:27 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 http://sustainabilityarchive.com/ebpr-with-struvite-recovery-to-reduce-chemical-consumption-and-increase-nutrient-removal-reliability http://sustainabilityarchive.com/ebpr-with-struvite-recovery-to-reduce-chemical-consumption-and-increase-nutrient-removal-reliability#comments Fri, 25 Jun 2010 19:59:37 +0000 justin http://sustainabilityarchive.com/?p=326 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

]]> http://sustainabilityarchive.com/ebpr-with-struvite-recovery-to-reduce-chemical-consumption-and-increase-nutrient-removal-reliability/feed 0