WWETCO FlexFilter and Bio-FlexFilter
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1 Innovative Filter Technology Tool for Reducing Energy, Expanding Capacity, Wet Weather Management and Nutrient Control WWETCO WWETCO FlexFilter and Bio-FlexFilter
2 AGENDA WWETCO FlexFilter & Bio-FlexFilter Multi-Use Technology Approaches CSO Controls SSO Controls Phosphorous Trimming Treatment Towards Energy Neutrality WWETCO Technology Applications
3 WWETCO FlexFilter & Bio-FlexFilter Wet Weather Management Biological Treatment Physical Chemical Treatment
4 WWETCO FlexFilter and Bio-FlexFilter Patented and Patents Pending Passive Down Flow Design No Mechanical Parts High Solids Loading (up to 50 lbs/day/sf) High Rate (5 to 20 gpm/sf) Multi Function Uses Raw Sewage Filtration (85% TSS) Biological Treatment (68% CBOD 5 ) Chemical Floc Filtration (TP < 0.1) Low Backwash Water (1% to 10%) Low Power Requirements (10 to 60 KWHr/MG treated) Low Capital Costs (< $0.25/gal capacity).
5
6
7 Influent
8 Influent
9 Influent Effluent
10 Influent Effluent
11 Influent Effluent
12 Influent Effluent
13 A porosity gradient is created by the lateral compression of the media bed. The result is the stratification and removal of large and small particles throughout the media bed. This allows the FlexFilter to treat high solids laden wastewaters including flush conditions caused by CSOs.
14 Initiate Backwash Influent Effluent
15 Waste
16 Waste
17 Waste
18
19 Backwash Supply
20 Initial Air Lifts Water Column and Cleans Fine Screens Waste Backwash Supply
21 Backwash Supply Waste
22 Backwash Supply Waste
23 Drain
24 Drain
25 Drain
26
27 FILTER IS DRAINED PRIOR TO BACKWASH. PHOTO AFTER PRIMARY INFLUENT FILTRATION IN PREPARATION FOR BACKWASH.
28 PHOTO AFTER PRIMARY INFLUENT FILTRATION IN PREPARATION FOR BACKWASH.
29 BACKWASH WATER FLOW BEGINS, CLEANING THE TOP PERFORATED PLATE.
30 Optimized Backwash by Central Draw-off with Minimal Flow and Short Washing Cycle
31 After 20 minutes, backwash is complete, filter cell is drained to waste and the filtration cycle begins again.
32 Regulatory Issues CSOs - Comply with In-Stream Standards Must Demonstrate No Reasonable Potential to Cause or Contribute Biological Treatment Not Necessarily Required SSOs Prohibitive By-Pass Rule and Biological Treatment
33 Regulatory Issues CSOs - Comply with In-Stream Standards Must Demonstrate No Reasonable Potential to Cause or Contribute Biological Treatment Not Necessarily Required SSOs Prohibitive By-Pass Rule and Biological Treatment
34 Preliminary Treatment Primary Clarifier Backwash Wet Weather Treatment Train Excess Wet Weather Flow (WWF) Biological Treatment FlexFilter Wet Weather Filtration (Design Event) Secondary Clarifier Disinfection Filtered Wet Weather Effluent (TSS<30 mg/l)
35 TSS, mg/l 600 TSS Primary Influent Filtration - March to September 2011 Average Filter Effluent 13 mg/l Influent Effluent Filter Run Composite Tests
36 WWETCO FlexFilter
37 WWETCO FlexFilter
38 Preliminary Treatment Primary Clarifier Backwash Dry Weather Treatment Train Biological Treatment Secondary Clarifier Disinfection Secondary Effluent FlexFilter Metal Salts Option for Phosphorous Trimming Reuse Quality Filter Effluent Tertiary Filtration
39 Phosphorous, mg/l WWETCO FlexFilter Phosphorous Removal versus Alum Dose Springfield, OH Influent Effluent Alum Dose (mg/l) y = -0.1x R² = 0.9
40 Total Phosphorous, mg/l Alum Dose, mg/l as AL2O3 Influent and Effluent Total Phosphorous Columbus GA Tertiary Filtration Testing Alum Added to WWETCO Filter Influent Influent Effluent Alum Dose
41 Preliminary Treatment Primary Clarifier Backwash Wet Weather Treatment Train Excess Wet Weather Flow (WWF) Biological Treatment Secondary Clarifier Disinfection Secondary Effluent Tertiary Effluent FlexFilter Wet Weather Filtration (Average Events) Filtered Wet Weather Effluent (TSS<30 mg/l)
42 Regulatory Issues CSOs - Comply with In-Stream Standards Must Demonstrate No Reasonable Potential to Cause or ContributeBiological Treatment Not Necessarily Required SSOs Prohibitive By-Pass Rule and Biological Treatment
43 Preliminary Treatment Primary Clarifier Biological Treatment Secondary Clarifier Disinfection Dry Weather Treatment Train Intermediate Wastewater Treatment Backwash Bio-FlexFilter Thickening & Anaerobic Digestion 2 kw-hr/mgd for Filter versus 62 kw-hr/mgd for Aeration Reduced Aeration Power, or Increased Plant Organic Capacity Increased Methane Gas Production Up to 50% Energy Savings Pays for itself in < 8 years
44 CBOD5, mg/l CBOD 5 Primary Influent Filtration - March to September 2011 Average Filter Effluent 25 mg/l Filter Run Composite Tests Influent Effluent
45 Effluent Total and Soluble CBOD5, mg/l Total and Soluble CBOD5 Removal Soluble CBOD5 y = x R² = Total CBOD Soluble CBOD Total CBOD5 y = x R² = Influent Total and Soluble CBOD5, mg/l
46 Preliminary Treatment Wet Weather Treatment Train Excess Wet Weather Treatment Primary Clarifier Biological Treatment Backwash Bio-FlexFilter Thickening & Anaerobic Digestion Secondary Clarifier Provides Biological Treatment to Excess Wet Weather Flow Disinfection
47 Springfield, Ohio, WWTP 100 MGD WWETCO FlexFilter High Rate Treatment (HRT) Facility For CSO Treatment Single Cell Traverse Section 11-Cell Filter Matrix Single Cell Longitudinal Section
48 Influent WWETCO ½ MGD FlexFilter - Mobile Pilot Closed Top Filter with Media Viewing Panels Complete with Auto Operation Controls Pumps, Samplers, Chemical Feed, Variable Gravity Head Testing and Remote Monitoring Capability Filter Office Effluent Side, End and Top Viewing Panels
49
50 0.75 MGD WWETCO FlexFilter Tertiary Filter Franklin, GA
51 Lamar, MO 2 MGD Wastewater Lagoon WWETCO FlexFilter
52
53 319(h) Grant Stormwater BMP Columbus, GA, Vehicle Maintenance Yard WWETCO Hydraulic Flow Control Pretreatment WWETCO Compressed Media Filter Testing under 319(h) Grant Requirements
54 10 MGD WWETCO FlexFilter Retrofit of Traveling Bridge Tertiary Filter
55 Manila, Philippines - Esteros Treatment - Bio-FlexFilter
56 yan, Philippines GD Enhanced Primary FlexFilter
57 Remote CSO Application WWETCO FlexFilter During Dry Weather Blower Base Sewage Flow Disinfection Backwash Return Underground Covered Structure Left Empty During Dry Weather No residuals; no odors WWETCO FlexFilter
58 Remote CSO Application WWETCO FlexFilter During Wet Weather Combined Sewer Flow Backwash CSO Intermittent Low Head Blower Disinfection WWETCO Auto Operation on Level Control FlexFilter Filter Screenings and Filtered Solids Returned in Pumped Backwash No On-site Residual Removal No odor issues
59 Remote SSO Application WWETCO Bio-FlexFilter During Dry Weather Periodic Aerated Base Flow Periodic Base Flow Sanitary Sewer Dry Weather Flow Intermittent Low Head Blower Auto Operation on Timer Flow Created by Air Lift No On-site Residual Removal No odor issues WWETCO FlexFilter No Effluent
60 Remote SSO Application WWETCO Bio-FlexFilter During Wet Weather Sanitary Sewer Wet Weather Flow Intermittent Low Head Blower SSO Pumped Backwash Auto Operation on Level Screenings and Filtered Solids Returned in Pumped Backwash No On-site Residual Removal No odor issues WWETCO FlexFilter Bio-Treated Discharge with Disinfection
61 Summary Flexible multi-use treatment plant processes are the future to meet regulatory issues associated with wet weather and nutrient controls. Future treatment technologies will focus on energy savings and alternative ways to increase capacity with less capital and lower O&M. The WWETCO FlexFilter and Bio-FlexFilter offers these flexibilities and capabilities today.
62 Simple Hydraulic Control and Treatment Solutions to Wet Weather & Wastewater Pollution Problems: CSOs, SSOs and Stormwater, Biological Treatment Tertiary Filtration & Nutrient Control WWETCO FlexFlow Pod Filter Strip Filter WWETCO FlexFilter and Bio-FlexFilter Compressed Media Filter Drainage Network Stormwater Controls Pretreatment WWETCO Hydraulic Control Valve Tertiary Filter Remote Treatment Treated Effluent WWETCO Filter Pod Compressed Filter Media
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