Typically in RO plants for ...

Typically in RO plants for desalination may b upto,10kWh of energy might b needed for every cu. M of freshwater.

Submerged RO systems r proposed.

If seawater depths off shore permit,hydrostatic pressure can b used,since a major fraction of RO plant energy used t pressurised feedwater.

Integrated with wave energy devices,or other renewable energy sources r becoming popular.

Egyptian solar,and Norwegian or Australian wind energy uses reported.

Operating pressure depends on salinity.Could be up to 70 or more bars for seawater.As low as 20 forbrackish.

Higher recovery ratios above 30 percent could foul up membranes faster and increase operational costs.