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DESIGNER RECYCLED WATER

West Basin Municipal Water District. DESIGNER RECYCLED WATER. April 2004. Future Water Supplies. Alternative Sources of Water to the Region. Wastewater Recycling Ocean Water Desalination Brackish Groundwater Conservation. ULFT Program. Lakewood High School

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DESIGNER RECYCLED WATER

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  1. West Basin Municipal Water District DESIGNER RECYCLED WATER April 2004

  2. Future Water Supplies

  3. Alternative Sources of Water to the Region • Wastewater Recycling • Ocean Water Desalination • Brackish Groundwater • Conservation

  4. ULFT Program Lakewood High School Football Team earned $3,000 through their participation in the Lakewood Conservation Day Lakewood residents participate in ULFT demonstration

  5. RO PILOT PLANT

  6. WEST BASIN WATER RECYCLING PLANT

  7. West Basin Water Recycling Plant • Program Goal: 70,000 AFY Recycled Water by 2020 • Replace 1/2 of Imported Water with Recycled Water Groundwater

  8. Benefits of Recycled Water • Provides a local, dependable water supply • Lowers the Cost of Water • Reduces Wastewater Discharges to Santa Monica Bay • Reduces uses of imported water thereby contributing to “Statewide Water Solution”

  9. West Basin Water Recycling Plant Water Recycling Facilities: • 1994 West Basin Hyperion Pump Station • 1995 West Basin Water Recycling Plant (WRP) • 1995 Satellite Nitrification Plant • 1995 Satellite Nitrification Plant • 1997 WRP - Title 22 Expansion • 1997 WRP - Barrier Expansion • 1997 Satellite MF/RO Plant • 1999 Carson Regional Water Recycling Plant • 2000 WRP - MF/RO Expansion • 2004 WRP – Title 22 & MF/RO Expansion

  10. West Basin Water Recycling Plant Recycled Water Sales AFY X 1000

  11. West Basin Water Recycling Plant Beneficial Uses of Recycled Water

  12. “Designer Recycled Water” 1. Tertiary: Irrigation 2. Nitrified: Cooling Tower 3. Softened RO: GW Injection 4. Single RO: Low-pressure boiler feed 5. Double RO: High-pressure boiler feed

  13. West Basin Water Recycling Plant Recycled Water Use AFY X 1000 Title 22 High Purity Barrier Ultra Purity Nitrified

  14. West Basin Water Recycling Plant Title 22 Recycled Water • Spec - < 2 NTU, 750 ppm TDS • Flocculation - Filtration-Disinfection • Uses - Landscape, Irrigation, Golf Courses, Cement, Highway Medians, Schools, etc.

  15. Filtration West Basin Water Recycling Plant HYPERION WWTP secondary effluent Disinfection (Cl) Coagulation flocculation

  16. West Basin Water Recycling Plant Cooling Tower Water--Nitrified T22 • Ammonia Removal • TDS 750 ppm • Biofiltration & Breakpoint Chlorination Process • Uses - Cooling Towers

  17. West Basin Water Recycling Title 22 Irrigation

  18. West Basin Water Recycling Plant Groundwater Injection Water - Sea Water Barrier • 7.5 mgd • Specification: Primary and Secondary Drinking Water Standard • Typically TDS < 100 mg/l • Barrier Process • MF, RO, Disinfection, Stabilizing, Blending

  19. Groundwater Balance, Movement West Coast Barrier Wells Los Angeles County Orange County

  20. Groundwater Flow Inland due to Basin Pumping Seawater Intrusion GENERALIZED CROSS SECTION OF AQUIFERS West East Pacific Coast Hwy. Barrier Wells Hawthorne Crenshaw Western Ocean 200 ft. Sand Aquifer 400 ft. Gravel Merged Silverado & 400 ft Gravel Aquifers Approx. 1000 feet Silverado Lower San Pedro Aquifer Pico Formation (“bedrock”) Modified from DWR 1961, Cross Section E-E’

  21. MF Break Tank West Basin Water Recycling Plant CHEVRON Blending Reverse Osmosis scale inhibitor Microfiltration H2SO4 NaOCl NaOCl Surge tank NaOCl decarbonator strainer To Barrier cartridge filter To HTP 5-mile outfall Stabilization To equalization tank HYPERION PLANT PUMP STATION CHEVRON West Basin Water Recycling Plant Phase III Expansion - Flow Schematic FeCl3 - ferric chloride NaOCl - sodium hypochlorite H2SO4 - sulfuric acid CO2 - carbon dioxide

  22. MICROFILTRATION

  23. REVERSE OSMOSIS

  24. West Basin Water Recycling Plant High Purity - Industrial • Specification • TDS - 35 ppm • Silica - <1 ppm • CA - <1 ppm • Mg - <1 ppm • Uses • Low-Pressure (400-650 psi) Boiler Feedwater • Demineralizer Feedwater

  25. West Basin Water Recycling Plant Mobile MF/RO

  26. West Basin Water Recycling Plant Ultra High Purity - Industrial • Specification • TDS - <5 ppm • Silica - <0.1 ppm • CA - <0.0 ppm • Mg - <0.0 ppm • High-Pressure 800-1200 psi Boiler Feedwater • Volume - 1800 gpm

  27. RO Break Tank MF Break Tank West Basin Water Recycling Plant Reverse Osmosis scale inhibitor Microfiltration H2SO4 CHEVRON NaOCl NaOCl Surge tank NaOCl decarbonator strainer Low Pressure Boiler Feedwater Storage Tank cartridge filter Surge tank To HTP 5-mile outfall To equalization tank HYPERION PLANT PUMP STATION CHEVRON dechlorination Surge tank High Pressure Boiler Feedwater Storage Tank 2nd Pass RO concentrate 2nd Pass Reverse Osmosis West Basin Water Recycling Plant Phase III Expansion - Flow Schematic FeCl3 - ferric chloride NaOCl - sodium hypochlorite H2SO4 - sulfuric acid CO2 - carbon dioxide

  28. West Basin Water Recycling Plant Recycled Water Use Title 22 (750 ppm) Ultra Purity (5 ppm) Barrier (100 ppm) High Purity (35 ppm) Nitrified (750 ppm)

  29. West Basin Water Recycling Plant Putting Projects Together • Marketing • Right Technology • Water Rates • Financing package • WQ quality • Selection of right technology • Rapid implementation / Design-Build • Operational Reliability

  30. West Basin Water Recycling Plant Operational Reliability • Water Quality Guarantees • Product flow Guarantees • 24 hour operations • Source redundancy • Electrical Redundancy • Best marketing Tool

  31. West Basin Water Recycling Plant Private and Public Partnerships • City of Los Angeles • U.S. Department of the Interior-Bureau of Reclamation • Heal the Bay-Mono Lake Committee, Baykeepers • Industry - Chevron, Mobil, ARCO, TRW, Hughes, Northrup, etc. • Privatized operation and maintenance of water recycling facilities

  32. West Basin Water Recycling Plant Private and Public Partnerships (continued) • County Sanitation Districts of Los Angeles County, Metropolitan Water District of Southern California, and Water Replenishment District are participating agencies. • State of California and 12 cities and local utilities are participants in the program.

  33. WEST BASIN MUNICIPAL WATER DISTRICT Report Card Service Area 17 Cities and Unincorporated areas of Los Angeles County 1990 2001 People 780,000 833,000 Water Use (AFY) • Groundwater 50,000 50,000 • Imported Water 170,000 140,000 • Recycled Water - - - - - - 30,000

  34. West Basin Water Recycling Plant DEDICATION CEREMONY

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