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| Water containing volatile organic components (VOC’s), ammonia, hydrogen sulfide, carbon dioxide, and/or radon is introduced at the top of the degasifier. For example, dissolved sulfides in groundwater, consisting of hydrogen sulfide gas, bisulfide, and sulfide ions, are cost effectively removed by degasification. Spray nozzles or specially designed weir troughs uniformly distribute the contaminated liquid. Packing and/or sieve trays provide a large, turbulent surface area. Ambient air is blown into the bottom of the degasifier and, as it rises toward the outlet, the hydrogen sulfide diffuses from the water to the air because of the concentration differential. In this way, the hydrogen sulfide will continue to transfer to the air stream in accordance with various chemical and mechanical principles until equilibrium is approached. If necessary, the hydrogen sulfide in the air can be oxidized in an AroBIOS biological scrubber or a Duall chemical scrubber to non-odorous, non-toxic, and non-hazardous by products. |
