Constructive water dialogue a key to success
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Constructive Water Dialogue: a key to success. Fawzi Karajeh [email protected] California Department of Water Resources For the The Southern California Water Dialogue Meeting Los Angeles, October 24, 2007. Total Water Withdrawals, 2000.

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Constructive water dialogue a key to success

Constructive Water Dialogue: a key to success

Fawzi Karajeh

[email protected]

California Department of Water Resources

For the

The Southern California Water Dialogue Meeting

Los Angeles, October 24, 2007


Total water withdrawals 2000

Total Water Withdrawals, 2000

Courtesy of Dr. Robert Wilkinson, University of California, Santa Barbara


Constructive water dialogue a key to success

  • Done every 5 years

  • Water Plan update 2005

  • http://www.waterplan.water.ca.gov/


Framework for action sustainable reliable water in 2030

2 InitiativesEnsure Reliable

Water Supplies

Vision

3 FoundationalActions EnsureSustainable

Water Uses

Framework for ActionSustainable & Reliable Water in 2030

Vital EconomyHealthy EnvironmentHigh Standard of Living

ImplementIntegratedRegional WaterManagement

Improve

Statewide Water

Management

Systems

UseWaterEfficiently

ProtectWaterQuality

SupportEnvironmentalStewardship


Diversifying water portfolios

DiversifyingWaterPortfolios


Resource management strategies

Reduce Water Demand

Agricultural Water Use Efficiency

Urban Water Use Efficiency

Improve Operational Efficiency & Transfers

Conveyance

System Reoperation

Water Transfers

Increase Water Supply

Conjunctive Management & Groundwater Storage

Desalination –Brackish & Seawater

Precipitation Enhancement

Recycled Municipal Water

Surface Storage – CALFED

Surface Storage - Regional/Local

Improve Water Quality

Drinking Water Treatment and Distribution

Groundwater/Aquifer Remediation

Matching Quality to Use

Pollution Prevention

Urban Runoff Management

Practice Resource Stewardship

Agricultural Lands Stewardship

Economic Incentives (Loans, Grants, and Water Pricing)

Ecosystem Restoration

Floodplain Management

Recharge Areas Protection

Urban Land Use Management

Water-Dependent Recreation

Watershed Management

Resource Management Strategies


Constructive water dialogue a key to success

3.1

2.0

1.4

1.0

0.8

0.5

0.4

0.4

By 2030


How is desalination different from other water supply alternatives

How is Desalination different from other water supply alternatives?

  • Unique opportunities:

    • Provides new water supply from oceanwater and unusable brackish groundwater/reliable

    • Helps alleviate the overdraft of conventional sources

    • Drought resistant/combatant

    • High quality product water

    • Unaffected by climate changes!

    • Flexible modular capacity- can be increased to meet demand or reduced to reduce supply and or energy consumption

    • Can reclaim contaminated sources which without treatment are unusable

    • Desal technology makes more water recycling and reuse possible


Co location operating scenarios

Co-location: Operating Scenarios

  • Assess the impact of various operating conditions:

  • Desalination facility operates only when the power plant operates and requires no additional feedwater

  • Desalination facility operates at times when the power plant is not fully operational, potentially requiring additional feedwater and energy production

  • Changes in the power plant cooling system potentially result in the need for additional feedwater beyond that required by the power plant, with potential impacts on mixing and dilution of the concentrate

  • Closing of a power plant leaves the desalination facility requiring another source of power, its own feedwater and other approaches to mixing and dilution


Co location studying the issues

Co-location: Studying the Issues

  • Validate / identify the limits of potential benefits:

  • Use of existing feedwater infrastructure

  • Use of existing discharge infrastructure

  • Reduce power transmission costs and line losses

  • Use of power plant cooling water, eliminating the need for additional feedwater (and associated impacts)

  • Dilute brine concentrate with discharge from the power plant, thus decreasing the impacts associated with concentrate discharge


Co location dwr policy

Co-location: DWR Policy

  • Commit to answering questions about the feasibility of seawater desalination along the California coast and the viability of co-location.

  • Prop. 50 funded projects affected by the co-location issue (2 pilots, 1 feasibility, and 1 R&D) will help provide needed information to make informed decisions on future funding for such projects.

  • While taking advantage of the benefits of co-location, it is important that desalination facilities proposing to co-locate with power plants should not aggravate or perpetuate the environmental impacts of these plants.

  • Any future full-production facilities of this nature will have to abide by all laws and regulations governing feed water intake as well as brine discharge


Proposition 50 desalination grants other important issues energy

Proposition 50 Desalination GrantsOther important issuesEnergy

  • Energy Recovery/Efficiencies:

    • Affordable Desalination Coalition

    • East Bay MUD

    • City of Avalon

    • City of Oxnard …

  • Alternative / Renewable Energy:

    • Geothermal VTE: USBR

    • Solar Distillation:

      • Sweetwater Authority

      • Coachella Valley WD

  • Co-location / Co-generation:

    • Los Angeles DWP

    • San Diego Water Authority


  • Proposition 50 desalination grants energy affordable desalination coalition project

    Proposition 50 Desalination GrantsEnergyAffordable Desalination Coalition Project


    Constructive water dialogue a key to success

    Proposition 50 Desalination GrantsEnergyAffordable Desalination Coalition Project


    Constructive water dialogue a key to success

    Proposition 50 Desalination GrantsEnergyAffordable Desalination Coalition Project

    Affordable Oceanwater Desalination Demonstration Project

    Main Objective: Test energy recovery efficiency, pump efficiency, and low pressure reverse osmosis membranes.

    Location: Naval Facilities Engineering Service Center in Port Hueneme.

    Partners: Cal. Energy Commission; Local Water Agencies; USBR; US Navy; Research Institutions; Consulting firms.

    Anticipated Results: Reduction of total energy consumption by up to 40% over the commonly used technology.

    Status: On-going


    Power consumption trend for seawater ro

    Power Consumption Trend for Seawater RO

    Source: Int. Desalination & Water Reuse Quarterly Nov-Dec 2004


    Scattergood pilot project site

    Scattergood Pilot Project Site

    Pilot project site

    Courtesy of City of Los AngelesDepartment of Water and Power


    Proposition 50 desalination grants energy affordable desalination coalition project1

    Proposition 50 Desalination GrantsEnergyAffordable Desalination Coalition Project

    • Develop environmentally sensitive treatment process adaptable to alternate source water intakes

    • Confirm ability to meet water quality goals in cost effective manner

    • Optimize pretreatment process that is robust, reliable, and sustainable

    • Evaluate warm and cold water as source of supply

    Seawater Desalination “LADWP” Pilot Project

    Courtesy of City of Los AngelesDepartment of Water and Power


    Proposition 50 desalination grants other important issues intake

    Proposition 50 Desalination GrantsOther important issuesIntake

    • Horizontal/Slant Well Technology: Municipal Water Dist. of Orange County

    • Under Ocean Floor Intake: Long Beach Water Dept.

    • Subsurface Intake Filter: Montara Water & Sanitation Dist.

    • Co-location with power plant cooling intake:

      • LA Dept. of Water & Power

      • San Diego Water Authority


    Proposition 50 desalination grants other important issues concentrate management

    Proposition 50 Desalination GrantsOther important issuesConcentrate Management

    • Zero Liquid Discharge:

      • Indian Wells Valley Water Dist.

      • Sweetwater Authority

    • Recovery Enhancement: Eastern Municipal Water Dist.

    • Metal Removal: Calleguas Municipal Water Dist.

    • Brine Line / Concentrate Conveyance:

      • San Diego County Water Authority

      • Irvine Ranch Water Dist.

    • Percolation well: Sand City

    • Under Ocean Floor Discharge: Long Beach Water Dept.

    • Discharge Co-location:

      • w/ power plant outfall: San Diego County Water Authority (San Onofre)

      • w/ wastewater plant discharge: Marin MWD, Los Angeles DWP

      • w/ industrial cooling water outfall: East Bay MUD

    • Evaporation Ponds: Coachella Valley WD


    Proposition 50 desalination grants other important issues pre post treatment

    Proposition 50 Desalination GrantsOther important issuesPre- / Post- Treatment

    • Pre-Treatment

      • UV, Chlorine Dioxide: Long Beach Water Dept.

      • MF/UF:

        • Los Angeles DWP

        • Affordable Desalination Coalition

        • City of Camarillo

      • NF: Long Beach Water Dept.

      • Biotoxins, Phytoplankton Blooms: West Basin MWD

    • Post-Treatment

      • Blending / Product Water Effects:

        • Long Beach Water Dept.

        • Municipal Water Dist. Of Orange County

        • West Basin MWD

      • Disinfection/Stabilization: Long Beach Water Dept.


    Colorado water system hoover dam

    Colorado Water System(Hoover Dam)

    Courtesy of Dr. Robert Wilkinson, University of California, Santa Barbara


    Bay delta water system california aqueduct

    Bay-Delta Water System(California Aqueduct)

    Courtesy of Dr. Robert Wilkinson, University of California, Santa Barbara


    Constructive water dialogue a key to success

    There is only certain ways that you can generate electricity. There are only certain number of finite technologies, each with their own strength and weaknesses, each with their own cost to produce, each with own effect on the environment.” Chuck DeVore (Assemblyman- Irvine) SN&R Oct 18, 2007.

    There is only certain ways that you can generate electricity “Water”. There are only certain number of finite technologies “options”, each with their own strength and weaknesses, each with their own cost to produce, each with own effect on the environment.”


    Helpful links

    Helpful Links

    Department of Water Resources

    www.water.ca.gov

    Recycling and Desalination Branch

    www.owue.water.ca.gov/recycle/


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