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1 CouncilUpdateJan702pet104i2-6069.ppt ELLIS CREEK WATER RECYCLING FACILITY PETALUMA, CA North Bay Watershed Association Conference April 9, 2010.

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Presentation on theme: "1 CouncilUpdateJan702pet104i2-6069.ppt ELLIS CREEK WATER RECYCLING FACILITY PETALUMA, CA North Bay Watershed Association Conference April 9, 2010."— Presentation transcript:

1 1 CouncilUpdateJan702pet104i2-6069.ppt ELLIS CREEK WATER RECYCLING FACILITY PETALUMA, CA North Bay Watershed Association Conference April 9, 2010

2 dw1007cwea.ppt/2 Ellis Creek Water Recycling Facility

3 dw1007cwea.ppt/3 Headworks

4 dw1007cwea.ppt/4 Oxidation Ditches

5 dw1007cwea.ppt/5 Secondary Clarifiers

6 dw1007cwea.ppt/6 Ellis Creek Water Recycling Facility

7 dw1007cwea.ppt/7 Wetlands u Treated water is sent to Petaluma River or recycled for irrigation

8 dw1007cwea.ppt/8Treatment/Habitat/Recreation

9 dw1007cwea.ppt/9 Ellis Creek Water Recycling Facility

10 dw1007cwea.ppt/10 Tertiary Treatment Ultraviolet Disinfection Sand Filtration

11 dw1007cwea.ppt/11 Petaluma’s Recycled Water Program u Began 1984 (discharge prohibition May 1 – Oct. 20) u Two types of water: Secondary Secondary Tertiary Tertiary

12 dw1007cwea.ppt/12 Secondary Recycled Water u Agricultural irrigation 500 acres irrigated pasture 500 acres irrigated pasture

13 dw1007cwea.ppt/13 Secondary Recycled Water Two 18 hole golf courses 35 acre vineyard

14 dw1007cwea.ppt/14 Tertiary Recycled Water – Fire Protection Sand Filtration u Reserve 500,000 gallons in storage for fire protection

15 dw1007cwea.ppt/15 Tertiary Recycled Water – Plant Process Water

16 dw1007cwea.ppt/16 Tertiary Recycled Water – Landscape Irrigation (…and toilet flushing, construction water…)

17 dw1007cwea.ppt/17 Summary Use of Recycled Water u Agricultural irrigation = 470 mg/year u Urban irrigation = 260 mg/year u On-site use = 130 mg/year u Total use = 860 mg/year (50% of wastewater treated) u Potable water savings 390 mg/year 390 mg/year Equivalent to 3,500 homes Equivalent to 3,500 homes

18 dw1007cwea.ppt/18 Future Use of Recycled Water

19 dw1007cwea.ppt/19 Future Use of Recycled Water Parks High School Fields

20 dw1007cwea.ppt/20 Questions

21 dw1007cwea.ppt/21 Need for Ellis Creek Water Recycling Facility u Increase capacity to 6.7 mgd u Meet increasingly strict regulatory requirements u Improve reliability u Produce tertiary recycled water Irrigate areas dependent on potable water Irrigate areas dependent on potable water Locally controlled water supply Locally controlled water supply

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