Desalination, With a Grain of Salt:
A California Perspective
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Desalination - Water Management - Lecture Slide, Slides of Water and Wastewater Engineering
Following are the fundamental concepts that the Lecturer has tried to convey in these Lecture Slides : Desalination, Grain Of Salt, California Perspective, History Of Desalination, Desalination Process, Economic, Environmental, Climate Change, Overview, Municipal Uses
Typology: Slides
2012/2013
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Desalination, With a Grain of Salt:
A California Perspective
Overview
History of desalination
Desalination process
Economic, environmental, and socialconsiderations
Climate change
Operator
Purpose
Max Capacity
(MGD)
Status
City of Santa Barbara
Municipal
Inactive
City of Morro Bay
Municipal
Intermittent use
Marina Coast WaterDistrict
Municipal
Idle
Santa Catalina Island
Municipal
Inactive
U.S. Navy/ NicholasIsland
Municipal
Not known
Monterey Bay Aquarium
Aquariumvisitor use
Active
California’s Municipal Uses
Electrical Energy
44%
Fixed Cost
37%
Membrane Replacement
5%
Maintenance and
Parts
7%
Labor
4%
Consumable
3%
Cost Breakdown for SWRO
Energy Intensity of Water Sources in
San Diego County
Water Supply Diversity and Reliability
Largely independent of weather conditions
Source diversity
Offers local control
Source: USGS website
Source: DWR website
0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.
New Surface Water
Desalination
Unit Cost ($ per acre-foot)
Reliability Example
Desalination/Recycled Water
Environmental Risks and Benefits
Desalination offers environmentaladvantages
Source displacement
And environmental risks
Marine Mammal Center
U.S. Fish and Wildlife Service
Social Considerations
Water rates will rise.
Disproportionate impact onlow-income communities.
Coastal development and land-use issues are unresolved.
Source: USGS
Climate Change
Issues to be addressed include:
Future sea-level and storm frequency andintensity
Adaptation: lesser dependence of climate-sensitive water supplies
Implications of high energy requirements
Source: USGS