초록 ▼

A method and apparatus for purifying and/or separating fluids including passing such fluid from a feed side of a reverse osmosis unit to the product side of such unit and to an ultimate user during a purifying cycle and recirculating residual fluid back to the feed side in bypass relation to the rev

A method and apparatus for purifying and/or separating fluids including passing such fluid from a feed side of a reverse osmosis unit to the product side of such unit and to an ultimate user during a purifying cycle and recirculating residual fluid back to the feed side in bypass relation to the reverse osmosis unit during a treating cycle to introduce suitable treating fluids into the system for disinfecting and rejuvenating the system.

대표청구항 ▼

A method of purifying fluid utilizing reverse osmosis comprising: passing fluid to be purified during a purifying cycle through an open ended feed zone, through a reverse osmosis zone to an open ended product zone and to an end user for a preselected time period; interrupting said purifying cycle af

A method of purifying fluid utilizing reverse osmosis comprising: passing fluid to be purified during a purifying cycle through an open ended feed zone, through a reverse osmosis zone to an open ended product zone and to an end user for a preselected time period; interrupting said purifying cycle after said preselected time period by closing said feed and product zones and recycling residual fluid in by-pass relation to said reverse osmosis zone from said product zone in direct, continuously circulating flow to said feed zone for a preselected time period during a treating cycle; and, introducing treating fluid from a treatment zone in direct, continuously circulating flow into the recycled fluid during said treating cycle to continuously disinfect/rejuvenate and flush said reverse osmosis zone throughout. The method of claim 1, said treating fluid being an osmotically active formaldehyde solution having a rejection range of approximately 38% to approximately 50% with respect to the reverse osmosis zone to allow residual fluid to osmotically pass from said product zone through said reverse osmosis zone to said feed zone for a period of approximately one (1) to two (2) minutes to an equilibrium stage, said equilibrium stage lasting approximately one and one-half (1½) to two (2) hours.