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Seawater desalination off the Chilean coast for water supply to the mining industry

Water is an important component in the mining industry. With mines often located in remote and dry areas, a sustainable supply of water is crucial. The development of seawater desalination, reduced membrane costs, and reduced energy consumption have made seawater a viable source of water supply for...

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Published in:Desalination and water treatment 2013-01, Vol.51 (1-3), p.11-18
Main Authors: Knops, Frans, Kahne, Estanislao, Mata, Manuel Garcia de la, Fajardo, Cristian Mendoza
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description Water is an important component in the mining industry. With mines often located in remote and dry areas, a sustainable supply of water is crucial. The development of seawater desalination, reduced membrane costs, and reduced energy consumption have made seawater a viable source of water supply for mining. Reliability of the desalination plant, quality of the water, and the availability of sufficient water supplies are the most important requirements to be fulfilled for the mining industry. Therefore the best available and proven technologies meeting the above-mentioned criteria should be used. The key for successfully operating a seawater desalination process based on reverse osmosis membranes (SWRO) is the pretreatment. Several tests conducted by researchers all over the world have proven that ultrafiltration (UF) provides an optimum pretreatment for the SWRO. The UF removes all the suspended solids and provides a substantial reduction in the microbiological activity. The plugging in of SWRO spacers is completely eliminated and the SWRO cleaning frequency can be drastically reduced. This paper presents the experience of using the UF as a pretreatment to the SWRO in Chile. Two desalination plants are described. Both the plants are of the desalination type dual membrane: ultrafiltration followed by reverse osmosis. One plant (Gas Atacama) was commissioned in June 2011 and has since been successfully in operation. The second plant (Minera Candelaria) is currently under construction.
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subjects Applied sciences
Cleaning
Desalination
Desalination plants
Energy consumption
Energy costs
Exact sciences and technology
Industrial use water
Marine
Membranes
Microorganisms
Mining
Mining industry
Plant reliability
Pollution
Pretreatment
Reverse osmosis
Sea water
Seawater
Seawater desalination
Solid suspensions
Suspended particulate matter
Suspended solids
Ultrafiltration
Water desalting
Water filtration
Water resources
Water shortages
Water supplies
Water supply
Water treatment and pollution
title Seawater desalination off the Chilean coast for water supply to the mining industry
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