1 / 18

Reuse in Urban Landscape and Power Plants Gary Darling & Rob Parker

Reuse in Urban Landscape and Power Plants Gary Darling & Rob Parker. Re-Use = Economic Success. Gary Darling Delta Diablo Sanitation District Rob Parker Calpine Corporation GE Leadership Summit : From Used to Useful November 13, 2009 Ossining, New York.

fala
Download Presentation

Reuse in Urban Landscape and Power Plants Gary Darling & Rob Parker

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reuse in Urban Landscape and Power Plants Gary Darling & Rob Parker

  2. Re-Use = Economic Success Gary Darling Delta Diablo Sanitation District Rob Parker Calpine Corporation GE Leadership Summit : From Used to Useful November 13, 2009 Ossining, New York

  3. Delta Diablo Sanitation District • Medium-Sized Plant: Average Flow 13MGD • One of the largest industrial recycled water plants in California • New recycled water service to 2 golf courses and 7city parks • May 2009 awarded the best medium-sized water treatment plant in the State of California • July 2009 recognized with Platinum Peak Performance Award - achieved by only 2% of wastewater treatment operations nation-wide San Francisco DDSD & Calpine

  4. What’s happening out West?? California Water Conditions: • 2008 statewide driest spring/summer on record • 2007 Southern California driest year on record • Sacramento and San Joaquin Rivers: • 2 year stream flow in the lowest 10% of historical range • Delta “debate” Snow Surveying in the Sierra Nevada

  5. Lake Oroville (29% capacity) Source: State of California Department of Water Resources

  6. San Luis Reservoir (16% of capacity) Source: State of California Department of Water Resources

  7. Climate Change – is it real?? • Increase in temperatures globally • Rising sea levels • [7” at Golden Gate Bridge in past 100 years] • Diminishing glaciers/snow cover • More extreme weather events • Change in precipitation patterns

  8. Untapped Resources…New paradigm for Wastewater Agencies Wastewater Treatment “waste” Recycled Water Desalination Stormwater Biosolids to Energy (Calories to E)

  9. Partnerships = Economic Success • Regional Coalitions • Bay Area Recycled Water Coalition • Bay Area Biosolids to Energy • Industry/Municipalities

  10. Calpine Corporation • Founded in 1984 • Capable of delivering nearly 25,000 megawatts in 16 states in the United States and Canada • Calpine is the nation’s largest renewable geothermal power provider • Calpine’s fleet of 62 plants makes it the largest natural gas fueled power producer in North America • Calpine currently operates 8 facilities that utilize recycled water

  11. Delta Diablo Sanitation District – Delta Energy Center Recycled Water Facility Project • 2 Calpine projects sites in the City of Pittsburg designed with wet cooling. • Average demand 7-8 MGD, Max demand 9-10 MGD. • Conventional water source(s) would be cost prohibitive, require system upgrades and difficult to permit. • DEC and DDSD adjacent to one another, LMEC 2 miles of pipeline required. • A tertiary water treatment facility (Recycled Water Facility – RWF) to meet California Title 22 specifications would be required. • The initial capital investment (Approx $20MM) for the RWF was attractive due to the two Calpine projects absorbing the cost. • Both LMEC and DEC return CT blowdown to DDSD. • Some excess capacity in RWF for future customers to reduce O&M costs.

  12. Recycled Water Use Challenges • In California, the Title 22 specifications are limited. No limits on TDS, ammonia, bio-loading, phosphate etc. • High ammonia levels provide operational challenges and higher chemical costs. • High TDS influences the amount of cooling tower cycles that can be achieved. Driven by air permit, leads to higher chemical costs. Wet Cooling vs. Dry Cooling • Available water resources • Plant footprint considerations • Air cooled presents higher initial capital costs • Air cooled can have negative impact on plant performance (3%- 7%) • Wet cooled will have higher operating costs (Chemical treatment) • Wet cooled may have discharge challenges (NPDES Permit, ZLD?) • Plume issues?

  13. Case Study:Antioch Recycled Water Project[1 golf course, 4 city parks] Construction costs of $10 million

  14. Comparison of Recycled Water -v- Fresh Water Costs -Must be done on an “apples to apples” basis: • Recycled water is STILL more cost effective when treatment facility capital costs are added • Recycled water is “drought proof” • There are no fisheries impacts from use of recycled water

  15. Key Messages: • Fresh water supply is in crisis and costs will rise • Recycled water is a major part of the solution • Public/private partnerships promote economic viability • Federal and State funding further enhance economics

  16. Gary W. Darling General Manager Delta Diablo Sanitation District 925-756-1900 garyd@ddsd.org Rob Parker Director of Asset Management (Western Region) Calpine Corporation 925-557 2259 rparker@calpine.com

More Related