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

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Column Test Results: Pollutant Removal (paired sign test of influent vs. effluent) Media Type R-SMZ- GAC S-Z-GAC (layered) Cr, Cu, Sb, Al Pb Zn Cd, Ni, Tl, Fe Hg NO 3 TCDD T, F T T T, F T T T Recommended biofiltration mixed media combination T, F T T, F T T T Layered filter media combination currently in use R = rhyolite; SMZ = surface modified zeolite; GAC = granular activated carbon; PM = peat moss; S = site sand; Z = site zeolite T = removal for total form (unfiltered); F = removal for filtered form (passed through 0.45-µm membrane filter) Other findings (data not shown here): • The bioretention media combination met all current site permit limits, except for copper and mercury during peak conditions (not expected to occur), and had significant removals for all constituents measured, except for phosphorus and gross beta radioactivity. • The current site layered media combination resulted in all effluent samples meeting the current site permit limits, except for a slightly elevated pH, when maximum site runoff conditions were considered.
Media Performance Plots for Copper, Full-Depth Long-Term Column Tests 14 µg/L limit
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 16 and 17: layered S-Z-GAC R-SMZ-GAC-PM Granul
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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