C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
182/15.3
C02F 1/44 (2006.01) B01D 61/02 (2006.01)
Patent
CA 1251145
REVERSE OSMOSIS SYSTEM ABSTRACT OF THE DISCLOSURE A chemically enhanced reverse osmosis water purification system and process is provided in which the inlet of a second reverse osmosis unit is coupled in series to the product water outlet of a first reverse osmosis unit. Water to be purified is conditioned by an ion exchange resin type water softener and pumped to the inlet of the first reverse osmosis unit. The product from the first reverse osmosis unit is treated with a chemical treatment agent, such as a sodium hydroxide solution, upstream of the inlet to the second reverse osmosis unit. The brine from the brine outlet of the second reverse osmosis unit is recirculated to the water flow line upstream of the first reverse osmosis unit.
482332
Meredith & Finlayson
U.s.filter/ionpure Inc.
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