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ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: IN-DRAIN TREATMENT DEVICE. HYDRO INTERNATIONAL UP-FLO™ FILTER
Citation:
PENN STATE HARRISBURG. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: IN-DRAIN TREATMENT DEVICE. HYDRO INTERNATIONAL UP-FLO™ FILTER . U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-07/120, 2009.
Impact/Purpose:
to publish information
Description:
Verification testing of the Hydro International Up-Flo™ Filter with one filter module and CPZ Mix™ filter media was conducted at the Penn State Harrisburg Environmental Engineering Laboratory in Middletown, Pennsylvania. The Up-Flo™ Filter is designed as a passive, modular filtration system that uses a sedimentation sump and filters oriented in an “up-flow” mode to remove sediments and pollutants from runoff. The verification challenge included collecting influent and treated effluent samples during four distinct challenge phases – intermittent flow, continuous flow, variable flow, and high flow – designed to evaluate the system’s hydraulic and pollutant removal capacities. The verification testing concluded that the system was capable of removing approximately 78 percent of sediment, as determined by the total suspended solids (TSS) and suspended sediment concentration (SSC) analytical procedures, during flow conditions at or below design flow capacity. The verification testing also concluded the system was generally ineffective at removing total phosphorus, although the total phosphorus challenge concentration exceeded the concentration specified in the test plan, and approximately 50 percent of chemical oxygen demand (COD). The system accepted a hydraulic flow of up to approximately 35 to 40 gpm, without bypassing, depending on the runoff contaminant loadings. Testing indicated that when the filter media reached loading capacity, it would shift within the filter module, creating a pathway for water to pass through the module without passing through the filter module. This varied from the vendor indicated design failure mode, which was for the filter to block flow, forcing water to rise in the sump to the bypass siphon elevation, and pass through the bypass siphon.
URLs/Downloads:
ETV REPORT: IN-DRAIN TREATMENT DEVICE. HYDRO INTERNATIONAL UP-FLO™ FILTERFOR FURTHER INFORMATION.PDF (PDF, NA pp, 5 KB, about PDF)
IDTT
Verificatiion Statement