SmartDrainTM for Enhanced Biofiltration Controls - Unix.eng.ua.edu

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layered S-Z-GAC R-SMZ-GAC-PM Granular activated carbon (GAC) 20 15 10 5 Peat moss (PM) Rhyolite sand ( R) Maintenance with scraping of the surface of the media was not very effective; the removal of several inches of media worked better, but still only for a limited time. 0 R-SMZ-GAC Surface modified zeolite (SMZ) R-SMZ Site zeolite (Z) load to initial maintenance (kg/m2) Site sand (S) initial average flow rate (m/day) 1. Site sand clogged first and had the lowest flow rate 2. Site zeolite and peat alone were next to clog 3. Biofiltration mixed media combination performed better than current site layered media combination Pitt and Clark 2010
Long-Term Column Test Results: Pollutant Removal Site Sand Peat moss GAC Peat moss GAC • Of individual media types studied, peat and GAC demonstrated best removal for total and dissolved copper (although note the relatively high influent concentrations) • Primary copper removal mechanism appears to be physical straining (of particulate-associated phase) and sorption onto GAC along with organic complexation with peat components, rather than cation exchange
Page 1 and 2: SmartDrain TM for Enhanced Biofiltr
Page 3 and 4: Kansas City’s CSO Challenge • C
Page 5 and 6: Adjacent Test and Control Watershed
Page 7 and 8: Examples from “65%” plans prepa
Page 9 and 10: Annual Runoff Reductions from Paved
Page 11 and 12: Clogging Potential for Different Si
Page 14 and 15: • Goals: Media Testing - To provi
Page 18 and 19: Column Test Results: Pollutant Remo
Page 20 and 21: This image cannot currently be disp
Page 22 and 23: Cumulative Particulate Loading to F
Page 24 and 25: Varying Depth Column Test Results
Page 26 and 27: Contaminant Losses during Anaerobic
Page 29 and 30: Many Areas Require Biofilter Draina
Page 31 and 32: • Outlet control can be more cons
Page 33 and 34: Variables affecting the drainage ch
Page 35 and 36: Experimental procedure Cont. • Du
Page 37 and 38: Slope tests on the SmartDrain TM ma
Page 39 and 40: Examining the clogging potential of
Page 41 and 42: Turbidity measurements taken from t
Page 43 and 44: Smart Drain Flow Rates Compared to
Page 45 and 46: Biofilter Underdrain Options and Wa
Page 47 and 48: Biofouling Tests of SmartDrain TM M
Page 49 and 50: Stage-discharge relationships for t
Page 51: Acknowledgements • The US EPA is

SmartDrainTM for Enhanced Biofiltration Controls - Unix.eng.ua.edu

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