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Desalination Plants - Safe and reliable water throughout the world -

The rising world population is creating water shortage problems. Hitachi Zosen is building desalination plants to provide the world with safe and reliable water supplies.

Installations

Starting with the first desalination plant in 1971, Hitachi Zosen has installed 42 plants to date, mainly in Japan and the Middle East, with a combined output of 1.2 million cubic meters per day.

Desalination processes Benefits
Multi-stage flash
(MSF)
- Used in many desalination plants, suitable for large-scale installations
- Performance efficiency and output water quality is relatively unaffected by fluctuations in input seawater quality (such as salt concentration and turbidity)
Multiple effect distillation
(MED)
- Good heat transfer efficiency; uses 40% less energy than reverse osmosis membrane method
- Performance efficiency and output water quality is relatively unaffected by fluctuations in input seawater quality (such as salt concentration and turbidity)
Reverse osmosis
(RO)
- The most energy-efficient process
- Simple configuration can be installed relatively quickly

Latest technology: trials of solar heat power generation and desalination system

A trial will be conducted of a new type of solar-powered desalination system that uses solar heat power generation technology. Solar-powered desalination uses sunlight as the heat source for distilling seawater.
The trial is due to run from November 2012 to October 2013 in Saudi Arabia, with a view to commercialization of the system from FY2014.

For more information on the technology and other plants in operation.