Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1993-02-19
1994-08-16
Dawson, Robert A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210650, 210654, 210 86, 210 87, 210134, 95 36, 95 38, B01D 6100
Patent
active
053384563
ABSTRACT:
A water purification process for removing dissolved solids of the type that are normally present in a municipal water supply or the like. The process uses a forced draft decarbonator having an inlet and a product outlet, a vacuum degasifier having an inlet, a product outlet and a water level sensor, and a reverse osmosis unit having an inlet, a product outlet and a brine outlet. Preferably, the vacuum degasifier is located downstream of the forced draft decarbonator with the product outlet of the forced draft decarbonator being coupled to the inlet of the vacuum degasifier. The reverse osmosis unit is located downstream of the vacuum degasifier with the product outlet of the vacuum degasifier being coupled to the inlet of the reverse osmosis unit. Water to be purified is provided to the inlet of the forced draft decarbonator at a predetermined rate. According to the invention, the rate at which water to be purified is provided to the inlet of the forced draft decarbonator is a function of a predetermined water level in the vacuum degasifier.
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Dawson Robert A.
Fortuna Ana M.
Judson David H.
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