R. E. Speece Vanderbilt University David Clidence President of ECO2

Transcription

1 R. E. Speece Vanderbilt University David Clidence President of ECO2

2 COMPANY PROFILE Headquartered in Indianapolis, IN Founded in 2002 Longest Operating System 15 years 70+ Installations Dr. Richard Speece

3 ECO2 SUCCESS Commercialize Speece Cone Technology 70+ Installations 100% Success Rate TN/KY Projects Knoxville #1 Knoxville #2 Columbia #1 Columbia #2 Murfreesboro

4 SUPEROXYGENATION FOCUS WASTEWATER WATER QUALITY Odor / Corrosion Prevention Restore Water Quality

5 Water Quality Appliations High DO Odor Prevention Force mains, Primaries Sludge Holding Tank Odor Control Water Quality Limited Receiving Waters Zero Sum Effluents D.O.= BOD ult Rising Sludge Rivers and Harbors Statified Reservoirs

6 SUPEROXYGENATION FOCUS WASTEWATER WATER QUALITY Odor / Corrosion Prevention Restore Water Quality

7 ROOT CAUSE OF ODOR Oxygen Nitrate Sulfate Under Anaerobic Conditions: Bacteria consumes BOD Converts Sulfate to Sulfide SO BOD + No D.O. H 2 S

8 CORROSION CONCERN Sulfuric Acid: Bacteria Converts Hydrogen Sulfide to Sulfuric Acid H 2 S + bacteria H 2 SO 4

9 CORROSION CONCERN

10 RATE OF CORROSION 100% Rate of Corrosion K s H 2 S = 25 ppm 0 H2S Concentration (ppm)

11 PURE OXYGEN vs ALT CHEMICALS Pure Oxygen $0.04 to $0.08/lb Difficult to Efficiently Dissolve But 1/10 cost of Peroxide, Nitrate and Iron

12 PURE OXYGEN vs ALT CHEMICALS Hydrogen Peroxide, Nitrates and Iron Salts Easy to Dissolve But 10 times as expensive as pure O2

13 PURE OXYGEN vs ALT CHEMICALS Iron cannot reduce H2S in water below 0.05 mg/l in equilibrium with 150 ppm in overlying air, therefore cannot eliminate odor and corrosion, only reduce it. Iron salts increase Total Dissolved Solids about 40 to 60 mg/l. NO3 takes twice the stoichiometric amount to prevent H2S formation.

14 POSITIVE DISSOLVED OXYGEN Positive D.O. Oxidizes H2S, mercaptans, etc. and prevents further odor generation

15 Untreated H2S Levels - BEFORE Peak: 800 ppm Average: 145 ppm

16 H 2 S Concentrations at System Start-Up ECO2 System Start-Up

17 D.O. and H2S Levels - AFTER Average: 0.4 ppm

18 TWO APPROACHES TO ODOR CONTROL 1. Allow it to form then treat it Capture and scrub 2. Prevent odors from forming SuperOxygenation ODOR

19 TYPCIAL FORCE MAIN INSTALLATION Oxygen Supply Side stream Pump ECO 2 SuperOxygenation Cone Lift Station Influent System Discharge Wet Well 18 Force main 3 miles long System Intake

20 Cheeney Creek WWTP - Fishers, IN 5.0 MGD. 5 hrs HRT Results: 5-10 mg/l D.O. at Plant Head Works Allisonville Road Hague Road Smock Creek

21 SUPEROXYGENATION FOCUS WASTEWATER WATER QUALITY Odor / Corrosion Prevention Restore Water Quality

22 POOLED RIVERS San Joaguin Chicago River Illinois River Fox River Rhine River Emscher River Savannah Harbor Flatland rivers with low re-areation rates Deny discharge permits

23 STRATIFIED LAKES

24 ECO2 Advantage: No Destratification Maintains the natural stratification Nutrients Remain in the sediment Reduce Internal Nutrient Load Colder water remains on the bottom: Allows for selective depth withdrawal Maintains cold water fish habitat

25 20 Years of Successful Hypolimnetic Oxygenation: Comanche Reservoir, CA 417,000 acre-ft. 135 deep. 16,000 lb O2 / day Cone D.O. Discharge 100 mg/l

26 How Does a Speece Cone Work?

27 How does the Technology Work? Traps pure O2 for prolonged periods to achieve efficient absorption - >95%. Creates an intense bubble swarm to enhance O2 transfer to the water. Discharge is >90% of saturation concentration. D.O. of 35 mg/l at ambient pressure. D.O. of >100 mg/l in force main with 100 ft of head.

28 How does the Technology Work?

29 TECHNOLOGY OVERVIEW Side stream Pump Oxygen Gas Raw Water Oxygenated Water River

30 CASE STUDIES

31 CORROSION CONCERN

32 Murfreesboro, TN 1.5 mile long FM, up to 5 hrs HRT 1,000 lbs/day oxygen

33 KUB Knoxville, TN 5 mile long FM, up to 18 hrs HRT 1,000 lbs/day oxygen

34 KUB- H 2 S RESULTS

35 Raymore, MO Owen Good PS (2015) 3 mile long FM, up to 17 hrs HRT 1,000 lbs/day oxygen

36 Raymore, MO Owen Good PS H2S Reduction from 123ppm avg., 939ppm peak To 1ppm avg., 10ppm peak

37 Paper mill Anson Madison, ME 3.5 MGD. 1,100 lb O 2 / day DO in Influent Well: 60mg/L / DO at Effluent Weirs 10mg/L

38 GOWANUS CANNAL, NY - CSO

39 Gowanus Canal, Brooklyn, NY 7,500ft long canal, 4ft deep, Capacity: 3,250lbs/day

40 PORT WENTWORTH, GA Oxygen is used to Off-Set BOD and Nutrients From Wastewater Treatment Plant Effluent

41 EFFLUENT D.O. LEVEL D.O. (mg/l) Effluent D.O. June 1, Sept 31, 2007 JUNE 1, 2007 SEPT 31, D.O. Average = 9.2 mg/l l D.O. Standard = 8.0 mg/l May-07 7-Jun Jun Jul-07 6-Aug Aug Sep-07 Date

42 DRINKING WATER RESERVOIR 4.2 MGD. 2,200 lb O2 / day Results: Cone D.O. Discharge 60 mg/l

43 12 10 Marston Reservoir Bottom Dissolved Oxygen 2008 vs Oxygenation reduced on June 9 to 75% Oxygenation reduced on July 8 to 50% Oxygenation increased on July 27 to 75% Apr 24-Apr 1-May 8-May 15-May 22-May 29-May 5-Jun 12-Jun 19-Jun 26-Jun 3-Jul 10-Jul 17-Jul 24-Jul 31-Jul 7-Aug 14-Aug 21-Aug 28-Aug 4-Sep 11-Sep 18-Sep 25-Sep Dissolved Oxygen, mg/l 2-Oct 9-Oct Oxygenation turned on May 14, 2009 at 100% feed rate 2008 DO - Typical Anoxia Mid July through Mid-September Oxygenation increased on August 11 to 100%

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45 Wolf Creek Reservoir, Barberton, OH Cone D.O. Discharge 60 mg/l

46 Wolf Creek Reservoir, Barberton, OH acres. deep. 1,800 lb O2 / day Cone D.O. Discharge 60 mg/l

47 Wolf Creek Reservoir, Barberton, OH acres. deep. 1,800 lb O2 / day Cone D.O. Discharge 60 mg/l

48 SAVANNAH HARBOR EXPANSION Authorized to deepen Savannah Harbor navigation channel by 5 feet to a depth of 47 feet to handle post-panamax vessels

49 D.O. CONSEQUENCES OF DEEPENING A larger volume of water without commensurate increase in mixing energy input needed to maintain specific reaeration rates Net loss of reaeration capacity shifts the dissolved oxygen balance and lowers dissolved oxygen levels Particularly lower at greater depths and during hot-weather, low-river-flow conditions

50 GPA - Savannah Harbor, GA CONE: 12 ft Diameter, 24 ft tall (x2) GOAL: Dissolve 30,000 lbs / day

51 GPA - Savannah Harbor, GA

52 Please contact us with any Questions Richard Speece David Clidence