Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1981-02-13
1982-10-19
Hart, Charles N.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210652, B01D 1300
Patent
active
043549390
ABSTRACT:
A method of desalinating solutions by reverse osmosis into a salt-poor permeate and a salt-rich concentrate is disclosed. The method includes the steps of supplying solution to a reverse osmosis unit, supplying concentrate leaving the reverse osmosis unit to a treatment container or containers while simultaneously withdrawing a predetermined amount of solution. Some of the solution is also supplied to another space of one of the containers so that practically pressure-less concentrate is conveyed to the environment. The sequence of steps can be reversed in which the containers are supplied so that concentrate collected in the space of the container not being supplied with solution is available for being conveyed to the environment.
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patent: 3794173 (1974-02-01), Bray
patent: 4124488 (1978-11-01), Wilson
Cheng, Chen-Yen et al., "Flow Work Exchanger", Aiche Journal, vol. 13, No. 3, May 1967, pp. 438-442.
Hart Charles N.
L. & C. Steinmuller GmbH
Sadowski David R.
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