c. Reverse Osmosis (Figure 1-12). After filtration to remove the suspended solids, the feed water is furtherprocessed by reverse osmosis. The feed water is pressurized and delivered to RO vessels containing RO elements. Inthe RO elements, the feed water flows across sheets of membrane material. Some of the water passes through themembrane sheets and is collected to become product water. Most of the dissolved solids (salts) are blocked frompassing through. Only 1/3 to 1/2 of the feed water passes through the membrane sheets to become product water.The rest of the water containing most of the dissolved solids (salts), continues flowing past the membranes and exits theRO vessels as waste water.Figure 1-12. Reverse Osmosis Process1-21TM 10-4610-232-12
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