Sydney desalter construction reaches halfway point

Construction of Sydney's 250,000 m³/d Kurnell seawater desalination plant is just over 50% complete, D&WR has been told by Sydney Water. The intake and outlet tunnels were completed in December 2008.

Aerial view of the Sydney construction site.

Aerial view of the Sydney construction site.

The Seafox 6 jack-up barge continues to drill the inlet risers. Two inlet and two outlet risers have been completed.

Civil works, including the RO building, pump halls, pretreatment filters and backwash-water treatment structures, are largely complete. The Leopold filter underdrains are being installed in the pretreatment filters.

The racks of pressure vessels for the reverse-osmosis membranes and the DWEER energy-recovery units for the first module (125,000 m³/d) are in place, with units for the second module arriving. The high-pressure pumps are scheduled for delivery soon.

Many chemical systems including storage tanks and bunds are in place, including the lime silos and saturators. The 40,000 m³ drinking-water storage tank is about 75% complete and due to be finished in February.

The drinking-water pumping station and delivery pipeline is approximately 33% complete. The laying of pipe and microtunnelling is under way at a number of locations along the route.

The lay-barge is being commissioned and is expected to start laying a twin pipline across Botany Bay in February. The project is on schedule to be completed by the end of summer 2009-10.

When complete, the Sydney desalination plant will be the largest in Australia and among the largest seawater reverse-osmosis plants in the world. It is being delivered under a design-and-construct contract by Blue Water Joint Venture (John Holland, Veolia, SKM).

The plant is fully owned by Sydney Water and will be operated by Veolia Water Australia under a 20-year operation contract.

Tags

| Filter | Lime | Recovery | Tanks


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