3 years ago

ITT's Place in the Cycle of Water - Water Solutions

ITT's Place in the Cycle of Water - Water Solutions


The Cycle of Water: Clean WaterDESALINATIONDesalination utilizes either thermal or membranetechnologies to remove dissolved solids from varioussources of water, including the sea, brackish resources,“fresh “ water intended for high purity applicationsand wastewater intended for reuse. Thermal plantsuse distillation techniques to vaporize water, leavingsalt and other contaminants behind. Membrane plantsoperate by pushing water through ultra-thin, semipermeablemembranes. Both technologies producewater of very high quality by removing a wide range ofpotential contaminants.Distillation is a very energy-intensive process.Membrane technology in the forms of reverse osmosis(RO) and nanofiltration (NF) have improved rapidlyduring recent years, and are now considered by themajority to be the technology of choice. Utilizingeffluent from a pre-treatment scheme is essential toprolonging the life of the membrane system.Current estimations of the membrane desalinationmarket show that it will generate $3 billion per yearin new business over the next decade, which is theresult of the increasing demand for desalinated waterdue to the pressure on freshwater resources and thefalling cost to produce it with RO systems. Membraneprocesses are expected to take share from thermalprocesses – approximately 59% of new plants will bemembrane-based between 2005 and 2015 (Source:Global Water Intelligence).CASE STORY:Virginia Water Utility YieldsFresh Water on Short NoticeWith a pending shortage of drinking water,a municipal water utility in Newport News,Virginia employed a relatively new technologyfor a reverse osmosis system to tap abrackish groundwater supply. With design,technical support and operator trainingfrom ITT, the municipality was able toquickly augment its safe drinking watersupply and enhance the quality of its overallwater supply as well.Contracted capacity of new desalination plants doubledbetween 1998 and 2001, from 400 million gallons peryear to 800 million gallons per year (1.5 to 3 billionliters). Forecasts suggest a greater than 100% increasein installed capacity (global) from 2005 to 2015,creating a total market worth of $95 billion over thenext decade (Source: Global Water Intelligence. Fastestgrowth around Mediterranean (mostly Israel, Algeriaand Libya).Worldwide, approximately 9,500 desalination plantshave an aggregate capacity of 8.5 billion gallons perday (32 billion liters).ITT’s Place In The Cycle of Water: Everything But The Pipes

The Cycle of Water: Clean WaterDESALINATION15

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