Wellington Dam wastewater Reverse Osmosis
Desalination proposal
The proposal involves reusing the saline scour water currently released
to the sea, in a bid to freshen the dam water. This scour water
would be taken from Wellington Dam down the side of the Darling Scarp to
Brunswick Junction, a distance of approximately 20 km. At Brunswick
the saline water would be treated through a reverse osmosis plant before
being piped to Harvey, a further 20 km away.
The head pressure of Wellington Dam above the reverse osmosis plant is
sufficient to treat the water and change its current 1500 ppm salt content
to a meagre 50 ppm. There is also sufficient pressure still available
to transport the water by pipeline to Harvey.
The Agritech proposal has been privately funded and requires no Government
contribution to the capital cost. The project could supply 45
GL of water to the Government under a long term contract at a price that
equates to a saving of at least 50% on the Kwinana RO option and 33% cheaper
than the Yarragadee groundwater extraction.
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