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Emerging Technologies March 2013 Nutrient Removal updated 2012 Blue PROTM Reactive Media Filtration Objective: Remove phosphorus from tertiary wastewater. Description: Technology Summary State of Development: Innovative. The patented Blue PROTM reactive filtration system is used to remove phosphorus from wastewater. It combines co-precipitation and adsorption to a reactive filter media in an upflow sand filter. The Blue PROTM equipment includes continuous backwash moving-bed filtration technology preceded by chemical addition and a proprietary pre-reactor zone. Reactive hydrous ferric oxide-coated sand media is created by using an iron coagulant on the filter media and accomplishes phosphorus removal by adsorption and filtration. This process does not require the media to be changed because it includes a continuous regeneration process. After adsorption, the iron and phosphorus are abraded from the sand grains. The iron and phosphorus passes out in a wastestream while the sand is retained in the system. The Blue PROTM system is most suitable for small to medium plants (less than 10 MGD), because of the relatively small area of each filter unit. For a larger plant, it would be difficult to operate and maintain because of the sheer number of filters required for treatment. Blue PROTM units can be configured to run in series to achieve lower phosphorus removal. The wastestream (containing residual iron) can be recycled to the head of the plant to accomplish chemically enhanced primary treatment. It has been demonstrated that the Blue PROTM process can achieve monthly average effluent total phosphorus levels as low as 0.009 mg/L to 0.036 mg/L in certain plants (Leaf et al., 2007). However further full scale data is needed to determine how consistently these levels could be achieved and assess the ability of this and other competing technologies to address fluctuations in influent phosphorus flow and loading due to diurnal or seasonal conditions. Concerns regarding this process include the fact that large recycle streams have to be sent to the biological process (Perri et al., 2012). Full-scale facilities are meeting total phosphorus limits of 0.05 mg/L (Newcombe and Lopp, 2010). Comparison to Established Technologies: The Blue PROTM process appears to be similar to other advanced filtration processes preceded by iron addition but includes the reactive adsorption media and proprietary pre-reactor zone and regeneration process. Research by Benisch et al. found that Blue PROTM provided better total phosphorus removal than other continuous backwash filters and was similar to a multistage adsorption clarifier filter system. BlueWater also provides the BlueCATTM system, which combines Blue PROTM with an advanced oxidation process. Available Cost Information: Approximate Capital Cost: 1 MGD $178,300; 3 MGD $494,000 uninstalled (2008). Approximate O&M Costs: 1 MGD $29,380; 3 MGD $84,000 annually (2008). Vendor Name(s): Blue Water Technologies, Inc. 10450 North Airport Dr. Hayden, ID 83835 Telephone: 888-710-2583 Fax: 208-209-0396 Web site: http://www.blueH2O.net Key Words for Internet Search: Installation(s): More than 10 installations in the United States at up to 4-MGD capacity: Broadway, VA Coeur d’Alene, ID Georgetown, CO Hayden, ID Marlborough, MA Plummer, ID Sheintech, LA Westerly, MA Blue PRO, advanced phosphorus removal, phosphorus adsorption 2-6 Wastewater Treatment and In-Plant Wet Weather ManagementPDF Image | Emerging Tech for Wastewater Treatment
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