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Layne Baroldi Environmental and Regulatory Affairs Supervisor Orange County Sanitation District OCSD Case Study Hydrogen from Sewage SCAP Energy Management.

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Presentation on theme: "Layne Baroldi Environmental and Regulatory Affairs Supervisor Orange County Sanitation District OCSD Case Study Hydrogen from Sewage SCAP Energy Management."— Presentation transcript:

1 Layne Baroldi Environmental and Regulatory Affairs Supervisor Orange County Sanitation District OCSD Case Study Hydrogen from Sewage SCAP Energy Management Committee Meeting July 28, 2009

2 OCSD Service Area 471square miles 220million gallons per day 2.5million population 21cities, 3 special districts 568miles sewer lines 16 pumping facilities 2 treatment plants Orange County, California Pacific Ocean Ocean Pipeline Reclamation Plant No. 1 Treatment Plant No. 2 Newport Beach Fountain Valley Santa Ana Los Alamitos Buena Park Fullerton Tustin Garden Grove La Habra Brea Placentia Yorba Linda Anaheim Orange La Palma Cypress Westminster Irvine Stanton Villa Park Costa Mesa Huntington Beach Seal Beach

3 Wastewater Plant Diagram Preliminary Treatment Solids Reuse Solids Dewatering Central Power Generation System Engines Primary Treatment Secondary Treatment Effluent Digestors Influent Solids Processing

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6 Full-scale Hydrogen Energy Station  300kW molten carbonate fuel cell  From digester gas  Natural gas as a back up fuel source  Co-produce electric power, hydrogen and thermal energy  300kW molten carbonate fuel cell  From digester gas  Natural gas as a back up fuel source  Co-produce electric power, hydrogen and thermal energy

7 Participants + +

8 12-Month Study  Determine quantity and quality of hydrogen  Maximize electricity and hydrogen  Optimize process efficiency  Establish a hydrogen fueling station  Analyze data to determine economic and environmental benefits  Determine quantity and quality of hydrogen  Maximize electricity and hydrogen  Optimize process efficiency  Establish a hydrogen fueling station  Analyze data to determine economic and environmental benefits

9 Environmental Goals  Create an alternative to gasoline  Governor’s “Hydrogen Highway”  Emissions reduction from digester gas combustion  Clean / renewable energy source  Create an alternative to gasoline  Governor’s “Hydrogen Highway”  Emissions reduction from digester gas combustion  Clean / renewable energy source

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11 Digesters Natural gas (backup) Digesters Natural gas (backup) Renewable H 2 Energy Station Vision Biogas Treatment Plant Heat Power Heat Hydrogen Fueling Station Fuel Cell Solids Treatment

12 Hydrogen Co-Production using MCFC  Heat recovery  Water gas shift  Cooling and water recovery  Hydrogen recovery  Tailgas integration  Heat recovery  Water gas shift  Cooling and water recovery  Hydrogen recovery  Tailgas integration WGS Shift H 2 Purification Heat Exchangers Air Hydrogen Biogas

13 Digester Gas Fed DFC ® Power Plants Kirin Brewery, Japan Sierra Nevada Brewery, CA Wastewater Treatment, Santa Barbara, CA Provided by:

14 VOCs – 250 to 30 ppm (88%) VOC – ND NOx – 40 to 11 ppm (73%) NOx – 0.3 ppm CO – 600 to 200 ppm (67%) CO – 10 ppm VOCs – 250 to 30 ppm (88%) VOC – ND NOx – 40 to 11 ppm (73%) NOx – 0.3 ppm CO – 600 to 200 ppm (67%) CO – 10 ppm Target ReductionFuel Cell Reduction Fuel Cells can contribute to reducing targeted emissions

15 Orange County Sanitation District Layne Baroldi (714) Layne Baroldi (714)

16 Central Power Generation System at Plant No.1

17 CNG Facility

18 CNG Dispensers

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