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March 2013 Oxidation Blue CATTM Objective: Removal of micro-constituents such as endocrine disruptors, hormones, pharmaceuticals, and other complex organics; disinfection, adsorption of macro- contaminants such as phosphorus. Description: Emerging Technologies Technology Summary State of Development: Emerging. updated 2012 The Blue CATTM process is a combination of the Blue PROTM adsorption filter process with an Advanced Oxidation Process (typically ferric with ozone) for tertiary removal of slowly biodegradable or non- biodegradable micro-constituents that have passed through upstream treatment processes. The oxidation process also provides highly effective disinfection without chlorine by-products. The Blue PRO process provides adsorption of contaminants such as phosphorus in an upflow sand filter with hydrous ferric oxide- coated media and a proprietary pre-reactor. According to the manufacturer, unpublished pilot studies of the Blue CAT system have been conducted at 10 gpm. Results of those studies include total organic compound reduction from 4 to 1.5 mg/L, a high-percentage reduction of estrogenic compounds and pharmaceutical surrogates monitored in the studies, color removal disinfection to less than 2 cfu/100 mL, turbidity reduction to 0.1 to 0.3 NTU, and 95 percent total phosphorus removal. The residual Blue CAT wastestream can be recycled to the head of the plant for additional contaminant removals and other secondary process enhancements. For increased contaminant-removal rates, destruction of organics, or disinfection, two passes through Blue CAT can be combined in series. Comparison to Established Technologies: Some evidence shows that Blue CAT requires less power than other advanced oxidation processes because of the system’s catalytic configuration to maximize oxidative capability. The only metal salt chemical used is a small amount of iron reagent (4–10 mg/L Fe) for the Blue PRO process. No polymer is used. The manufacturer claims that the process requires lower chemical dosing than typical chemical wastewater treatment processes and, consequently, produces fewer solids. The iron-based reactive agent also provides odor control. Similar to the Blue PRO process, the Blue CAT system is suitable for plants at less than 10 MGD. Because the upflow filters are limited in size, it would be difficult to operate and maintain a facility treating more than 10 MGD because of the sheer number of modules required for treatment. Available Cost Information: Approximate Capital and O&M Costs: Unavailable because no full-scale installation is in place. Vendor Name(s): Blue Water Technologies, Inc. 10450 North Airport Dr. Hayden, ID 83835 Telephone: 888-710-2583 Web site: www.blueh2o.net Key Words for Internet Search: Installation(s): No Blue CAT installations as of August 2012. Blue CAT, catalytic oxidation, ozone, advanced phosphorus removal, endocrine disruptors Data Sources: Blue PROTM, “Hydrous Ferric Oxide (HFO) Coated Sand, Adsorptive Media Technical Summary,” 2006. CH2M Hill, Technical Memorandum, “Evaluation of Blue PRO Process at the Hayden Wastewater Research Facility – Final Summary Report,” 2006. Newcombe, R.L., et al., “Arsenic Removal from Drinking Water by Moving Bed Active Filtration,” Journal of Environmental Engineering, Vol. 132, No.1, pp. 5–12, 2006. Wastewater Treatment and In-Plant Wet Weather Management 2-31PDF Image | Emerging Tech for Wastewater Treatment
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