Membrane distillation method

Details Membrane distillation method Membrane distillation method

1981-01-05

1984-07-17

Spear, Jr., Frank A.

Liquid purification or separation

Processes

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

210259, B01D 3100, B01D 1300

Patent

active

044604734

ABSTRACT:
A method and system for desalination of water by so called membrane distillation, wherein saline water is evaporated through the pores of a membrane whose proper operation requires that it not be wetted by either the distilland or distillate. Therefore, liquid intrusion into the pores of the membrane through which the distillate passes must be prevented by the surface tension of the liquid. Surfactants normally found in the saline feed water which have been found to cause liquid intrusion into the pores of the membrane are removed immediately prior to the distillation step by physical or chemical means such as adsorption by activated charcoal.

REFERENCES:
patent: 3228876 (1966-01-01), Mahon
patent: 3405058 (1968-10-01), Miller
patent: 3428556 (1969-02-01), Gunther
patent: 3436343 (1969-04-01), Smith

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