outlook desalination unit

24th WateReuse SymposiumSeattle, Washington – September 2009

An Overview of An Overview of Seawater Intake/Outfall OptionsSeawater Intake/Outfall Options

Tom Pankratz, Tom Pankratz, pankratztm@gmail.compankratztm@gmail.com

WateReuse Desal Workshop – Tom Pankratz

Desal Site Selection CriteriaDesal Site Selection Criteria

• Access to reliable seawater source

• Ability to minimize enviro impacts

• Ability to manage concentrate

• Access to adequate energy source

• Access to water distribution system

WateReuse Desal Workshop – Tom Pankratz

Traditional Channel IntakeTraditional Channel Intake

courtesy of Siemens

WateReuse Desal Workshop – Tom Pankratz

Traditional Shoreline DischargeTraditional Shoreline Discharge

WateReuse Desal Workshop – Tom Pankratz

Intake OptionsIntake Options

WateReuse Desal Workshop – Tom Pankratz

Passive Intake ScreensPassive Intake Screens

courtesy of Johnson Screens

WateReuse Desal Workshop – Tom Pankratz

Vertical Vertical BeachwellBeachwell

WateReuse Desal Workshop – Tom Pankratz

Constructed Infiltration GalleryConstructed Infiltration Gallery

courtesy of Fukuoka District Waterworks

WateReuse Desal Workshop – Tom Pankratz

Offshore Velocity Cap IntakeOffshore Velocity Cap Intake

courtesy Doosan Heavy Industries

WateReuse Desal Workshop – Tom Pankratz

Offshore Intake ConstructionOffshore Intake Construction

courtesy of ATLL

WateReuse Desal Workshop – Tom Pankratz

Offshore Intake/Outfall TunnelsOffshore Intake/Outfall Tunnels

DesalinatedWater

SeawaterIntake

ConcentrateDischarge

courtesy of Victoria DSE

WateReuse Desal Workshop – Tom Pankratz

Intake & Outfall TunnelingIntake & Outfall Tunneling

courtesy of Sydney Water

WateReuse Desal Workshop – Tom Pankratz

Alternative Tunneling ArrangementAlternative Tunneling Arrangement

courtesy San Diego County

WateReuse Desal Workshop – Tom Pankratz

Outfall and Diffuser ArrangementOutfall and Diffuser Arrangement

WateReuse Desal Workshop – Tom Pankratz

ConclusionConclusion

•• The number / size / environmental The number / size / environmental awareness of seawater desal is increasing, awareness of seawater desal is increasing, resulting in increased emphasis on intake resulting in increased emphasis on intake (and outfall) design and economics(and outfall) design and economics

•• Intake (and outfall) can be the Intake (and outfall) can be the ‘‘fatal flaw fatal flaw issueissue’’ of new seawater desal facilitiesof new seawater desal facilities