Gold Coast Desalination Plant

Desal Plant Profile - Gold Coast Desalination Plant
Labelled aerial photo of Gold Coast Desalination Plant

Total capacity:	133ML/day
Date commissioned:	February 2009
Percent of water supply:	27% of South Eastern QLD
feed water temperature (low):	17°C
Feed water temperature (high):	28°C
Seawater intake system:	Submerged open sea
Pretreatment system:	Ferric sulphate coagulation, sulphuric acid injection (pH reduction), polyDADMAC, dual media pressure filters
RO operating pressure:	First pass RO operating pressure - 64 bar (45% recovery). Second pass - 15 bar (85% recovery) ^[1]
RO passes:	2 ^[1]
RO trains:	9, 3
Post-treatment system:	Lime stabilization, CO2, disinfection by sodium hypochlorite injection
Concentrate disposal:	Treated supernatant discharged to sea, solids centrifuged and landfilled
Energy consumption:	3.58 kWh/m3
Energy recovery:	Each RO train is fitted with dual-work exchanger energy recovery devices, which recover up to 97% of unused energy from the brine. Renewable energy certificates are being used to fully offset carbon emissions from the plant.
Capital cost:	$1200 million
Useful links:	http://www.water-technology.net/projects/gold-coast-plant/

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Physical & Chemical Properties
Turbidity:	7 NTU

Cations

Anions

↑ ^1.0 ^1.1 ^1.2 Bellizia, G. (2008). GOLD COAST DESALINATION PROJECT. Paper presented at the 33rd Annual Qld Water Industry Operations Workshop, Indoor Sports Centre, Carrara, Gold Coast. http://www.wioa.org.au/conference_papers/08_Qld/documents/GeorgeBellizia_000.pdf Accessed November 6th, 2014
↑ Billiton, BHP. Appendix H3: Comparisons With Other Desalination Plants Olympic Dams Supplementary EIS (pp. 2-5). http://www.bhpbilliton.com/home/society/regulatory/Documents/Olympic%20Dam%20Supplementary%20EIS/Appendices/Appendix%20H3_Comparisons%20with%20other%20Desalination%20Plants.pdf Accessed November 6th, 2014.
↑ Crisp, G. J. (2010). Desalination in Australia. Paper presented at the OC Water Summit, Grand Californian Hotel, Disneyland Resort. http://www.mwdoc.com/OCWaterSummit/Presentations/GHD%20Ocean%20Desalination.pdf Accessed November 6th, 2014.