The National : THE NATIONAL Jan - Feb 2012
through, leaving sea water concentrate behind. 4: Desalinated water is treated to meet Australian drinking water standards and Victorian health requirements. 5: Drinking water may be stored in tanks before it is distributed into the Melbourne and regional water networks where it may be blended with water from existing catchments. 6: Seawater concentrate will be safely returned to Bass Strait though an underground and undersea tunnel approximately 1.5km long and discharge structures. The salt content and temperature will return to normal seawater salinity and temperature a short distance from the discharge nozzles, which act as diffusers. Ocean currents dilute the concentrate within seconds. Water Transfer Pipeline An 84km long underground pipeline will be used to transfer water from the desalination plant to Melbourne's existing water supply network. It will be able to carry up to 200 billion litres of water annu- ally. Desalination Plant The plant will comprise 29 build- ings. It will be set at a reduced ground level, enabling it to be inte- grated into the landscape and reducing the amount of energy needed to lift the seawater to the plant. The highest point of the main buildings is 20 metres above sea level, but these will be barely visible from surrounding areas. Renewable Energy About 90MW will be required to run the plant and pipeline when it is operating at 150GL. This will be 100 per cent offset by renewable energy. AquaSure has committed to buying exactly the same amount of renewable energy certificates to match the electricity used in any year by the desalination plant and transfer pipeline operations. This will ensure the equivalent amount of renewable energy is injected into the electricity grid. Over a 12 month period the outcome will be the same as if the desalination project had obtained its power supply directly from renewable energy sources. The desalination plant's energy consumption per household per day represents about the same amount as a 4-star fridge. A hot water service would use nearly eight times as much energy as the desalination plant per household per day. Underground Power Supply The plant will connect to the exist- ing electricity grid at Cranbourne, some 87km to the northwest, by means of a high voltage alternate current (HVAC) underground cable. To minimise impact on its surroundings the cable will be co- located underground in the same easement as the transfer pipeline. Fibre optic cables will also be laid with the power cables and pipeline to provide important monitoring information on the pipe and power networks. Additional capacity on this high-speed communications cable will facilitate improved broadband capability to surrounding communities. Environmentally Committed AquaSure has pledged to deliver the most technically advanced, environmentally sensitive and energy efficient desalination facility in Australia. In line with this, AquaSure is committed to minimis- ing the impact of the plant's con- struction and operation on the surrounding areas and communi- ties. Its top environmental priorities are to: • Protect ecological values near the desalination plant and other project infrastructure • Protect the marine, coastal and estuarine environment by tunnelling under the coast and using suitable intake and outlet structure designs • Offset the energy used to operate the plant by purchasing renewable energy certificates. • and the use of best possible design to ensure the structures integrate well into the coastal landscape Employment Jobs created on the Victorian Desalination Project and through supply contracts mean direct eco- nomic benefits are flowing from the project with increased employment and spending at a state and local level. The project is expected to create 4750 full-time equivalent jobs during construction. This includes 1700 direct jobs and as many as 3050 indirect positions. A further 150 full-time equivalent jobs --- 50 direct and 100 indirect --- will be created to support the operation, maintenance and servicing of the plant. John answered questions from the floor on all subjects to do with the desal plant. Brian Tonkin thanked John for his excellent presentation and presented John with a small gift. A presentation was made to Miller Goodwin for the work he has done since Ken stepped down as coordinator of the luncheon. Thank you Miller for a great job. NEXT FUNCTION The next luncheon is set down for the 25th September 2012 at The Glasshouse Restaurant. If any interstate drycleaner, launderer or allied trader is in Melbourne for the Grand Final you are most welcome to attend and join us for lunch by emailing email@example.com Thank you to Julian Sellers. for his Report and photograph.
THE NATIONAL Mar - Apr 2012
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