Can we use Reverse Osmosis in place of demineralization resin based systems?YES, DM plants are used to produce demineralised water. The higher the feed water TDS, the higher is the chemical consumption for regeneration. While in Reverse Osmosis, there is no need for an regeneration. !"ove #$$ ppm inlet water TDS, the operating cost of a Reverse Osmosis sstem is lower than that of a DM sstem, and the cost increases with increasing TDS for a DM plant.Therefore we should use a Reverse Osmosis sstem if the inlet TDS is % #$$ ppm. &f the outlet water 'ualit re'uired is lower than that achieva"le in a single pass Reverse Osmosis sstem, it is more economical to have either of the following schemes.Scheme Feed TDS (ppm Outlet TDS (ppmSingle pass RORO ( DMRO) DM) M*Dou"le pass RORO) M*+,#$$)-$$$$#$$)-$$$$.$$$)-$$$$#$$)-$$$$#$$).$$$.$$$.$)/$$0 1$0 10 1$0 10 #$$!hen do " use an #ltrafiltration system for water treatment?2ltrafiltration is a complimentar process to reverse osmosis where dissolved salts are not removed from water, which means there is no change in the chemical composition of the product water from an 2ltrafiltration sstem. 3arge molecular weight organics 41$$$ daltons) 1$$,$$$ daltons5 "acteria, colloids, viruses and other su"stances are removed from the water. This produces spar6ling clear safe water.The three main applications in water treatment are *ottled water production where feed water TDS is within limits, "ut clarit and disinfection is re'uired 7re)treatment to reverse osmosis sstems to enhance life of the Reverse Osmosis mem"ranes and protect them form fouling. &t is a single stage step process which eliminates, settling, sand filtration and polishing cartridge filtration Domestic water purifier for producing spar6ling, crstal clear, safe drin6ing water without electricit, chemicals and 2ltraviolet rasCan $erma membranes help in colour removal% &OD and COD from waste water and ma'e water recycle?Yes, with 7ermionics8s 7roprietar ultrafiltration9 nanofiltration mem"rane elements used as pre)treatment followed " a reverse osmosis sstem can effectivel reccle waste water at least up to :$;. The "alance re