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Phoenix666 [soylentnews.org] writes:

Phys.org [phys.org]:

Two wave energy converters (WECs) and two large 20-foot containers, one housing equipment for producing electricity and another for producing fresh water make up the Wave2O module. The WECs are connected to the containers by flexible hoses carrying pressurised seawater to and from the WECs. "Process seawater is sourced from an offshore well away from any sources of contamination through a multi-stage filtration system before entering a manifold system that splits its flow into two different paths," explains Ceberio.

Wave-induced mechanical energy is used by the WECs to drive two rotary actuators that increase the pressure of the intake seawater to 7 000 kPa before pumping it ashore. Here it is stabilised by a hydro-pneumatic accumulator to remove unwanted pressure pulsations before it enters the R/O system. A secondary flow of seawater is sent to an energy recovery unit (ERU). The ERU recovers energy from high-pressure brine – the by-product of the desalination process – and uses it to increase the pressure of the process seawater to 7 000 kPa. Energy recovery creates higher efficiency conversion, crucial for stand-alone operation.

The pressure-stabilised intake seawater is then merged and enters a standard R/O unit at an operating pressure of 6 200 kPa. Approximately 35 percent of the feed water is processed into fresh water, which is a relatively low recovery rate that has benefits related to reduced maintenance, extended membrane life and lower brine salinity. The highly energetic brine is then used to pre-charge the feed water.

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