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APV Water Desalination Unit
Fresh Water Generator with Prolonged Service Life
The APV Water Desalination Unit is a fresh water generator for desalination of seawater for production of potable and fresh utility water.
Construction is a single stage plate type based evaporator and condenser, separated by stainless steel demister.
Advantages:
* Reduced heat consumption due to pre-heating of feed water.
* Reduced maintenance costs
* Prolonged service life due to extensive use of non-corrosive materials
* Reduced installation costs
* Reduced fouling due to pre-installed and adjustable chemical dosing unit
* Automatic feed water dosing valve securing optimized fresh water production
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Brackish water desalination became viable in the early 1950's when GE Water & Process Technologies developed the world's first commercially-applied membrane desalination technology. This breakthrough, called electrodialysis (ED), is an electrochemical separation process in which ions are transferred through ion exchange membranes by means of direct current (DC) voltage. In the ED process, ions are removed from the feed water as the current drives the ions through the membranes to desalinate the process stream. In the early 1970's, ED was updated to electrodialysis reversal (EDR), which provided reversal of the electric field and automatic membrane cleaning. Today, EDR is widely used to economically treat water supplies which are challenging for other technologies to process and where water recovery up to 95% is required.
The ability to remove minerals and salts provides a solution to convert previously unusable waters to high purity resources for drinking water or high purity industrial uses.
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Customers in water-scarce regions find that the Seawater Reverse Osmosis (SWRO) Series from GE Water & Process Technologies solves their need for desalination while optimizing operating costs. The SWRO Series covers a range of customer applications, including:
Boiler feed water make-up
Irrigation water
Plant process make-up water
Small community potable water demand
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The world's water consumption rate is doubling every 20 years, outpacing by two times the rate of population growth. It is projected that by the year 2025 water demand will exceed supply by 56%, due to persistent regional droughts, shifting of the population to urban coastal cities, and water needed for industrial growth. The supply of fresh water is on the decrease. Water demand for food, industry and people is on the rise.
Lack of fresh water reduces economic development and lowers living standards. Clearly, there is a critical worldwide need to better manage this increasingly valuable resource.
Desalination systems from GE Water & Process Technologies can make abundant fresh water both from seawater and from challenging brackish sources.
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