1. Your Water – Locally Produced!
Jason M. Brabec, P.E.
Innovative Recycled Water Desalination for the
Cache Creek Casino Resort
HYDROSCIENCE ENGINEERS INC.
WateReuse California Annual Section Conference 2010
4. WASTEWATER EFFLUENT QUALITY
Recycled water meets Title 22 Criteria (Unrestricted Use)
PARAMETER EFFLUENT AVERAGE
Flow 230,000 gpd
Peak Treatment Capacity 475,000 gpd
Chlorine Residual 1-5 mg/L
Turbidity 0.10 NTU
5. RECYCLED WATER DISTRIBUTION
• Toilet flushing within the Resort
• Decorative water features
• Landscape site irrigation
• Yocha Dehe Golf Course irrigation
6. SITE WATER CYCLE
1.1 MG
WELLS
RW
RESORT / FACILITIES
WWTP
18
GOLF
COURSE
WATER FEATURES
CACHE CREEK
LANDSCAPE
IRRIGATION
13. GOALS & OBJECTIVES
• Provide soft water
• Suitable recycled water quality for irrigation
purposes
• Comply with WDR
• Minimize distribution system maintenance
• Maximize water reuse
• Maintain environmental stewardship
14. BRINE DISPOSAL
• Ocean discharge
• Deep well injection
• Discharge to other municipality
• Crystalizer
• Off-haul for disposal
15. ALTERNATIVES
A) Off haul ion-exchange regeneration brine
B) Desalinate recycled water
C) Desalinate potable water
16. ALTERNATIVE A
1.1 MG
WELLS
RW
RESORT / FACILITIES
WWTP
18
GOLF
COURSE
WATER FEATURES
CACHE CREEK
LANDSCAPE
IRRIGATION
WATER
SOFTENERS
NaCl
OFF-HAUL
BRINE DISPOSAL
17. ALTERNATIVE B
1.1 MG
WELLS
RW
RESORT / FACILITIES
WWTP
18
GOLF
COURSE
WATER FEATURES
CACHE CREEK
LANDSCAPE
IRRIGATION
WATER
SOFTENERS
NaCl
DESALINATION
BRINE
DISPOSAL
18. ALTERNATIVE C
1.1 MG
WELLS
RW
RESORT / FACILITIES
WWTP
18
GOLF
COURSE
WATER FEATURES
CACHE CREEK
LANDSCAPE
IRRIGATION
OFF-HAUL
BRINE DISPOSAL
POTABLE
WATER
DESALINATION
WATER
SOFTENERS
NaCl
THE WINNER!
19. OTHER DESIGN CONSIDERATIONS
• Site constraints –
topography
• Out of sight from
patrons
• Two-step brine
concentration
process
(due to brine off-haul)
23. SECOND STEP: BRINE CONCENTRATION
• Clarifier and pH conditioning
• Elevated silica levels in EDR reject
• Piloted Vibratory Shear Enhanced
Process (VSEP) system
VSEP selected for
2nd stage
33. GOALS & OBJECTIVES - Revisited
Provide soft water
Suitable recycled water for irrigation
Comply with WDR
Minimize distribution system maintenance
Maximize water reuse
Environmental stewardship
34. Jason M. Brabec, P.E.
10569 Old Placerville Road
Sacramento, CA 95827
916-364-1490
jbrabec@hydroscience.com
HydroScience Engineers