membrane process is most ...

membrane process is most common for desalination. smaller domestic Brackish water RO units are quite common & reasonably priced but same is not the case with desalination RO Rather than smaller house hold units a community scale desal RO unit can be considered. Further to economise such units,they may not be really operated w.r.t. rejection r membrane process is most common for desalination. smaller domestic Brackish water RO units are quite common & reasonably priced but same is not the case with desalination RO Rather than smaller house hold units a community scale desal RO unit can be considered. Further to economise such units,they may not be really operated w.r.t. rejection rate or membrane life normal considerations & may be used for extended life with may be increased salt passage since treated water quality is not very stringent as most industrial applications Further dilution of feed sea water with some other source of water may be thought to reduce cost. the dilution source may not be very pure but should not be very saline as sea water feed like rain water harvesting done traditionally in India some kind of natural solar evaporation pond can be considered where vapours may be lead to near by receiving tank where the vapours may get condensed as desalinated water. However the system needs to be developed in coastal villages where land availability would be easy regards Charu A Awalkar M.S., India