Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-12-16
1980-05-20
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 47, 210 51, 209166, C02B 120, C02C 502
Patent
active
042038375
ABSTRACT:
A process for removal of discrete particulates from liquids by foam flotation which is readily adaptable to continuous or batch processing. A continuous stream of foam, in which the gaseous medium is subdivided into individual bubbles, each encapsulated in a film consisting of a foaming agent solution, each film being shared with each adjacent gas cell, is pregenerated. The composition of the films of the pregenerated foam may include, in addition to the foaming agent, other agents or reagents useful or necessary for the collection and removal of the solid or solute material being extracted by counter ion action. The pregenerated foam is then introduced at a predetermined rate into the liquid carrying the solids or solutes to be extracted and is dispersed therein. The preformed surfactant films of the bubbles contact and attach the solid particles by counter ion action from the liquid body during the progess of the foam bubbles through the liquid. The loaded foam bubbles are allowed to float to the liquid surfaces where they consolidate into a stable foam layer for convenient removal from the liquid surface. Dissolved materials in a liquid body are similarly extracted by use of film having compositions suitable for ionic adsorption or reagents for precipitation of the soluble material on or within the film.
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Hoge John H.
Hubbard John H.
Hart Charles N.
Hruskoci Peter A.
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