| 摘要 |
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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