Outfalls


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Specialists team up to exploit sub seabed intake market

Sub seabed desalination plant intake company, Intake Works, has formed a partnership with specialist boring firm, Horizontal Directional Drilling (HDD), to market sub seabed intakes for seawater desalination projects.

Santa Cruz desalination EIR comment deadline in July

The draft environmental impact report (EIR) for the 2.5 MGD (9,500 m³/d) seawater desalination plant for the greater Santa Cruz area in California, USA, which was released on 13 May 2013, will be available for public comment until 15 July 2013.

Design/build RFQ issued for Monterey desalination plant

A request for qualifications (RFQ) was issued on 1 April 2013 by California American Water (Cal Am) for the desalination infrastructure component of its Monterey Peninsula Water Supply Project.

Monterey consultant can't choose between projects

The Monterey Peninsula Regional Water Board (MPRWA) in California still has to decide between three competing seawater desalination projects for the area after its Technical Advisory Committee accepted on 17 September 2012 a report by consultants Separation Processes Inc of Carlsbad.

KAUST SWRO desalination plant won by AES Arabia

A US$ 14 million contract for a 15,000 m³/d seawater reverse-osmosis (SWRO) desalination plant for the King Abdullah University of Science & Technology (KAUST) Research Park in Saudi Arabia has been awarded to AES Arabia Ltd.

Papers invited for 2013 AWWA/AMTA event

With the 2012 AWWA/AMTA Membrane Technology Conference under way this week in Phoenix, Arizona, a call for papers has been issued for next year's event in Texas.

Australian workshop on desalination intakes and discharges

An international workshop on intakes and discharges for seawater desalination is to be held by the National Centre of Excellence in Desalination Australia is in Adelaide on 16-17 May 2012.

Cambria desalination study fails consistency test

The California Coastal Commission has called into question the future of the Cambria desalination project near San Luis Opispo by ruling that a US Army Corps of Engineers project to test soil and water near the proposed intake/outfall site is inconsistent with its habitat and coastline rules.

OC pilot desalination pumping to restart in October

The pilot plant for the South Orange Coastal Ocean Desalination Project in California will resume discharging into the ocean in October 2011 following alterations to the discharge pipeline, which are about to go for bidding.

Outfall and intake problems hit OC desalination

The pilot plant for the South Orange Coastal Ocean Desalination Project in California has been forced to close down due to relocation of its outfall pipe due to heavy storms . The project has also run into problems with its intake water.

Olympic Dam supplementary EIS satisfies opposition leader

South Australia's opposition leader, Isobel Redmond, was quoted on 20 June 2011 in the Australian media as being "satisfied" that the Olympic Dam desalination plant will not cause any damage to the local environment, including the area's giant cuttlefish population.

Adelaide first water at end of July, says minister

The intake and outfall tunnels for Adelaide's Aus$ 1.83 billion (US$ 2 billion) seawater desalination plant in Australia have been completed and first water is expected at the end of July.

Escondido moves towards indirect potable reuse

The City of Escondido in southern California, USA, could be about to follow neighbour San Diego in setting up an indirect potable water-reuse (IPR) scheme as part of a wastewater facility upgrade costing about US$ 200 million.

Schematic of the MWDOC slant well technology

OC desalination slant-well testing to start

Testing of Phase 3 of the South Orange Coastal Ocean Desalination Project in Southern California will begin in the next few weeks, according to the Municipal Water District of Orange County (MWDOC), which held a public open day at the test site on Doheny State Beach on 12 May 2010.

Tender deadlines for Hassyan slip again

Three tenders for the Hassyan 1 (formerly Hassyan-P2) power and desalination complex have had their deadlines extended.

Aerial view of the Sydney construction site.

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.

Spanish/Australian consortium wins 2nd Perth plant

Australia's Water Corporation has announced that the Southern SeaWater Alliance (SSWA) is the preferred consortium to build and operate Western Australia's second seawater desalination plant near Binningup.

Depth Exposed Membrane for Water Extraction (DEMWAX™)

DXV Water Technologies has designed a novel membrane system that uses natural pressure, a very low recovery rate and gravity flow of feedwater past the membrane surface, resulting in an elegant, efficient system. Since the invention of the reverse-osmosis (RO) membrane researchers have tried to harness natural water-pressure, but past attempts mimic onshore processes with their configuration, recovery and flux. This low-flux low-recovery process will require more membrane than traditional systems; however, the elimination of intakes, outfalls, pre-treatment, pressure vessels and piping, energy recovery devices and coastal land will result in a water cost that is below many traditional sources. In addition to substantial energy savings, environmental and economic benefits that the DEMWAX system offers include: Mitigation of 'Brine' Disposal - the extremely low-recovery operation results in 'brine' at approximately 2-3% more concentrated than the surrounding ocean. Mitigation of Impingement and Entrainment - the intake velocity is several orders of magnitude less than typical intakes, virtually eliminating impingement and entrainment. Scalability - the system can be readily expan ded with the addition of cartridges and pumps. This article was published in the May/June 2009 issue of Desalination & Water Reuse.


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