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AssigneeKurita Water Industries Ltd.
InventorsKanji Miyabe, Nobuhiro Orita, Makoto Iwasaki, Yohka Tsurumaru, Toshitsugu Nakahara
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A method of treatment of a liquid or gaseous fluid to decompose volatile organic halogenated compounds therein comprises bringing the fluid containing volatile organic halogenated compounds in contact with a reducing agent in the presence of a metal catalyst and optionally thereafter treating the thus treated fluid with at least one of an adsorption treatment, a thermal decomposition and a biological decomposition treatment. The method efficiently decomposes the volatile organic halogenated compounds contained in a fluid, such as water or a gas, with a small expenditure of energy and at low cost and renders the fluid harmless to the environment.
A process for decomposing volatile organic halogenated compounds which comprises bringing a gas containing volatile organic halogenated compounds into contact with an adsorbent to separate the volatile organic halogenated compounds therefrom, regenerating the adsorbent with nitrogen gas to obtain a regeneration gas containing volatile organic halogenated compounds and water, decreasing the relative humidity of the regeneration gas containing the volatile organic halogenated compounds and water and then bringing the regeneration gas in contact with a reducing agent in the presence of a palladium catalyst or a platinum catalyst.
A process for decomposing volatile organic halogenated compounds which comprises bringing a gas containing volatile organic halogenated compounds into contact with an adsorbent to adsorb volatile organic halogenated compounds therefrom, regenerating the adsorbent with steam, condensing the resulting steam to obtain a condensed water containing volatile organic halogenated compounds, aerating the condensed water with air to obtain a regeneration gas containing volatile organic halogenated compounds and water, decreasing the relative humidity of the regeneration gas, and then bringing the regeneration gas into contact with a reducing agent in the presence of a palladium catalyst or a platinum catalyst.
Dependencies are inferred from the claim text.