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Perth Seawater Desalination Plant

Plant type

SWRO

Capacity

140,000m³/d

Design expansion capacity

250,000m³/d

Annual output

45GL

Population supplied

1.5 million

parameters

Seawater temperature

16°C to 24°C

Salinity

35,000–37,000mg/l

Salinity increase in Cockburn Sound

<1%

Environmental monitoring required

TDS, temperature, DO, sediment habitat

Pipeline

26km, 1,200mm

Power demand

24MW

Process energy requirement

4.0k–6.0kWh/kl

Power supply

Renewable (Emu Downs wind farm)

Wind farm

80MW; 48 wind turbines

Contract types

Design and build, operate and maintain

Contract period

25 years

Anticipated water cost

AUS$1.17/kl

Annual running costs

< AUS$20m

Project cost

AUS&#36;387m

Environmental protection statement

September 2002

First assessment

October 2002

Ministerial statement

May 2003

Second assessment

May 2004

Environmental approval and commitment to build announced

July 2004

Design competition starts between pre-qualified consortia

September 2004

Survey and consultation for potential pipeline routes

September / October 2004

Pipeline route selected

November 2004

Bids received

February 2005

Contract for plant awarded

April 2005

Plant construction began

April 2005

Pumping station construction began

May 2005

Environmental approval for pipeline route

June 2005

Pipeline construction began

September 2005

Construction completion

August 2006

Lime systems installed

August 2006

Plant commissioning

September 2006

Pumping station completed

October 2006

Official opening

November 2006

Client

Water Corporation of Western Australia

Main contractor

Multiplex-Degremont Joint Venture

Mechanical installation works

McConnell Dowell Constructors

Operator

Degrémont /Water Corporation alliance

Energy suppliers

Western Power

Wind farm developers

Stanwell Corporation and Griffin Energy

Lime systems

Transmin
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