Category: Disinfection
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Scaling-up and piloting of pressure-retarded osmosis
When Statkraft abandoned its pilot pressure retarded osmosis project it took much of the momentum out of the industry s then accelerating progress. This was despite the reported successes of Japan s giant Mega-ton project. The authors here outline the chief challenges and the prevalent views of the future among leading figures in the industry.…
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Cutting the costs of corrosion in seawater desalination with shut-off butterfly valves
Lower cost materials and coatings used in addition to corrosion-resistant valve designs both urged on by preferences in plant construction contracts have reduced the capital and operational costs of valves used in membrane and thermal seawater desalination. The design of the valve too has a significant role to play in keeping a rein not only…
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Treatment of process effluent water for reuse in food production
Effluent water reuse in the food industry raises inevitable questions about the risk and reliability of wastewater treatment and recovery processes in meeting the required standards. The author looks at how two food processing facilities adopted process water recovery and reuse shows how the benefits can be a maximized and how the challenges live among…
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The real value of commercial-scale testing
While product development is a commercial must the payback on investment in testing is possibly less clear. Dow explains how it sees a smoother path to market with the confidence gained from testing in its home-spun, real-world test centre. This article first appeared in the November/December 2014 issue of Desalination & Water Reuse magazine.
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New York watchdog throws out Suez desalination proposal
The New York State utility regulator has rejected a proposal by a Suez Environnement subsidiary, United Water, for the first desalination plant on the Hudson River north of New York City.
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Cal Am in race to get slant well test approval
California’s water utility, California American Water (Cal Am), is locked in a legal battle and races against the Coastal Commission timetable and a threatened shore bird’s breeding season in its bid to construct a slant well test for its proposed Monterey desalination facility.
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Protech and Dow win Carlsbad contracts
Contractor and plant operator for the giant Carlsbad desalination plant under construction in California, IDE Technologies, has selected City of Vista-based Protec Arisawa to provide the pressure vessels and and Dow Water and Process Solutions to supply reverse osmosis membranes for the Carlsbad project.
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Integrated Water wins US$ 1.5 million demonstration project deal
Water reuse specialist, Integrated Water Services, has won a contract to build a US$ 1.5 million, 380 m³/d indirect potable reuse demonstration project at the Ray Stoyer Water Reclamation Facility in San Diego County, USA.
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Offshore desalination prototype wins funding
Renewable sector engineering company 4NRg has won funding for its development of a prototype mechanical offshore desalination unit.
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Innovative Flow Analysis Method for High Loading Rate DAF
Dissolved air flotation (DAF) is a well established method for removing suspended solids from wastewater that is gaining ground in the pretreatment of seawater for desalination. The authors describe a method for analyzing the flow of water in DAF to inform better design of DAF tanks. This article first appeared in the August 2014 issue…