Removal of volatile compounds and surfactants from liquid

Details Removal of volatile compounds and surfactants from liquid Removal of volatile compounds and surfactants from liquid

1991-06-11

1992-06-16

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 47, 55 51, 55 53, 55 70, 55 71, 55 73, 55 74, 55183, 55196, 55279, 55387, B01D 1900, B01D 5304

Patent

active

051221659

ABSTRACT:
A process system and apparatus for removal of toxic volatile organic compounds (VOCs), volatile inorganic compounds (VICs) and surfactants from a contaminated liquid stream, more particularly groundwater, by a combination of pH adjustment, chemical reaction, ultraviolet reaction, gas stripping, scrubbing, adsorption and regeneration is described. This process system involves liquid pumping; liquid treatment in an enclosed dispersed gas stripping chamber; gas purification by a foam collector, a wet scrubber and a self-generative gas-phase granular activated carbon (GAC) contactor; and recycling of GAC-purified gas for further liquid treatment by dispersed gas stripping. The process system is extremely cost-effective for removal of VOCs, VICs, and surfactants, and eliminates the problem of secondary gas contamination caused by conventional air stripping towers.

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