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/application-of-ozone-and-biological-media-filtration-for-reclaimed-water http://sustainabilityarchive.com/application-of-ozone-and-biological-media-filtration-for-reclaimed-water#comments Tue, 06 Jul 2010 18:29:33 +0000 justin 1M]]> http://sustainabilityarchive.com/?p=385 Use of ozone followed by biological media filtration has been shown in this comprehensive pilot and demonstration scale test to enhance secondary effluent for reclamation purposes. Some enhancements are desirable simply because of better public acceptance, including significant color reduction, and micro-contaminant reduction. However other enhancements like turbidity removal, additional disinfection and ammonia reduction improve effluent from a compliance perspective. Other technologies were trialed including membrane ultrafiltration and reverse osmosis. The ozone BMF treatment platform also improved downstream membrane filtration processes by significantly increasing stable filtration flux and extending “clean-in-place” intervals. The technology increased 5%ile UV transmissivity values from 34% to almost 60%, resulting in significant cost savings in UV disinfection equipment requirements. Lastly, preliminary results indicate ozone increases average BMF solids removal capacity by 46%. “This process delivers the best value for money now and into the future, as a platform for providing flexibility to further enhance recycled water treatment, as needed” (Melbourne Water, July 2009). Source: WEFTEC 2009 Proceedings

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