eifert 9 15 07

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Published on January 3, 2008

Author: Marian

Source: authorstream.com

Natural Media Filters for Stormwater and Wastewater Treatment A Technology Overview with Case Studies:  Natural Media Filters for Stormwater and Wastewater Treatment A Technology Overview with Case Studies September 17, 2007 Prepared for: 10th Annual Indiana Pollution Prevention Conference Presented by: Walter H. Eifert Principal Hydrologist/ Vice President Slide2:  Current ENS Technologies IPP 2007 Conference What are Natural Media Filters?:  What are Natural Media Filters? Key Features: Constructed of naturally occurring materials including blended compost and peat Highly engineered and hydraulically controlled Passive operation Can be designed for either aerobic or anaerobic operation Low capital and O&M costs Natural Media Filters (NMFs) are high carbon-content treatment cells designed to remove a variety of contaminants from stormwater, wastewater and leachate. IPP 2007 Conference Slide4:  NMF for Stormwater Treatment (under construction) IPP 2007 Conference Application Arenas:  Application Arenas Urban/Agricultural Stormwater Runoff Landfill Leachate Interception/Treatment of Shallow Ground Water Plumes Acid Mine Drainage Industrial Wastestreams IPP 2007 Conference Slide6:  Leachate Influent Location IPP 2007 Conference Slide7:  NMF Cell (under construction) IPP 2007 Conference Slide8:  Effluent Collection Location IPP 2007 Conference Types of Contaminants Mitigated:  Types of Contaminants Mitigated PCBs Metals (Pb, Cd, Zn, Cr, Cu, Fe, As) Chlorinated Solvents (PCE, TCE) Acidity/pH Buffering Pathogens TSS IPP 2007 Conference Conceptual Cross Section: TCE/Cr Removal:  Conceptual Cross Section: TCE/Cr Removal Slide11:  Specific Removal Processes PHYSICAL Sedimentation Filtration Adsorption Volatilization CHEMICAL Precipitation Oxidation/Reduction Neutralization BIOLOGICAL Bacterial Metabolism Predation Natural Die-Off IPP 2007 Conference NMF Compost Media Types:  NMF Compost Media Types IPP 2007 Conference Composition of Spend Mushroom Compost:  Composition of Spend Mushroom Compost IPP 2007 Conference Composition of Biosolids Compost:  Composition of Biosolids Compost IPP 2007 Conference Composition of Leaf and Yard Waste Compost:  Composition of Leaf and Yard Waste Compost IPP 2007 Conference Composition of Farm Compost:  Composition of Farm Compost IPP 2007 Conference Peat Moss:  Peat Moss IPP 2007 Conference Natural Media Filters for PCB Removal:  Natural Media Filters for PCB Removal ENS Case Study Indiana Industrial Facility IPP 2007 Conference Indiana Industrial Facility :  Indiana Industrial Facility 172-acre active manufacturing facility Trace PCBs in storm sewers Must comply with regulatory discharge limit of 100 ppt PCBs for facility’s storm water runoff by 2007 Traditional treatment methods (i.e., multi-media filtration & GAC) cannot meet 100 ppt PCB limit IPP 2007 Conference Slide20:  IPP 2007 Conference PCB Concentrations at Outfall 001 Design Objectives:  Design Objectives Capture and remove trace PCBs using natural media (i.e., compost) filtration cells Capture and treat first-flush runoff from design storms with return frequencies of up to 10 years Create a site-specific storm water model to evaluate different design scenarios for optimal NMF approach IPP 2007 Conference Site Plan:  Site Plan MH-10 0.4 M gal storage capacity 1,000 GPM NMF cell influent flow rate MH-11 0.4 M gal storage capacity MH-12 1,200 GPM NMF cell influent flow rate MH-16 1,300 GPM NMF cell influent flow rate MH-21A 2 M gal storage capacity 500 GPM NMF cell influent flow rate Locations of storm water storage units and NMF cells based on model output and land availability IPP 2007 Conference MH-16 NMF Cell:  MH-16 NMF Cell IPP 2007 Conference MH-12 NMF Cell:  MH-12 NMF Cell IPP 2007 Conference MH-11 Stormwater Retention Basin:  MH-11 Stormwater Retention Basin IPP 2007 Conference MH-21A Stormwater Retention Basin:  MH-21A Stormwater Retention Basin IPP 2007 Conference MH-21A NMF Cell:  MH-21A NMF Cell IPP 2007 Conference Slide28:  IPP 2007 Conference PCB Removal in NMF Cells New Regulatory Limit Slide29:  IPP 2007 Conference TSS Removal by NMF Cells Cost Savings:  Cost Savings Traditional Treatment Capital Cost: $12 million Annual O&M Cost: $1 million NMF Treatment Capital Cost: $2 million Annual O&M Cost: $0.1 million Cost Savings Capital Cost: 83% Annual O&M: 90% IPP 2007 Conference Stormwater CTW:  Stormwater CTW ENS Case Study Mid-Atlantic Industrial Facility Portsmouth, Va. IPP 2007 Conference Slide32:  Pre-Construction IPP 2007 Conference Slide33:  Former Lagoon Areas and Outfalls Former WWT Basins Former Outfall 002 730 729B 729A 728A 728B E l i z a b e t h R i v e r HRSD Surge Tank Current Outfall 001 SDB Slide34:  (730) (728A) (SDB) (729B) (729A) (728B) VFC1 VFC2 Current ENS System Layout Slide35:  NMF Vertical Flow Cell (VFC) - Berm Construction IPP 2007 Conference Slide36:  Geotextile Installed Over Geocomposite Liner IPP 2007 Conference Slide37:  Influent Distribution Structures in Place IPP 2007 Conference Slide38:  Installation of Treatment Media and Effluent Collection Piping. IPP 2007 Conference Slide39:  Mushroom Compost Installation Above 1st Gravel Layer IPP 2007 Conference Slide40:  Placement of Riprap Over the Exposed Liner on the VFC Banks IPP 2007 Conference Slide41:  Initial Hydration IPP 2007 Conference Slide42:  IPP 2007 Conference Post - Activation VFC Performance: Total Zinc:  VFC Performance: Total Zinc IPP 2007 Conference VFC Performance: TSS:  VFC Performance: TSS IPP 2007 Conference VFC Performance: pH:  VFC Performance: pH IPP 2007 Conference Benefits of NMF Technologies:  Benefits of NMF Technologies Reduced Capital Costs 50% - 90% Reduction in O&M Costs Sustainable Technologies Proven Performance Provide Water Re-use Opportunities Can be Retrofitted into Existing Landscapes Offer High Aesthetic/Educational Values IPP 2007 Conference Slide47:  Proposed ENS System The answer and solution to a timeless question. Now We All Know!

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