Reverse osmosis system

Details Reverse osmosis system Reverse osmosis system

1984-06-04

1986-03-04

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210641, 2101952, 2104332, B01D 1300

Patent

active

045740496

ABSTRACT:
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.

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patent: 4434057 (1984-02-01), Marquardt

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