Purifying apparatus for contaminated water and ground water and method thereof
AssigneeCanon Kabushiki Kaisha
InventorsMasahiro Kawaguchi, Kinya Kato, Akira Kuriyama
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Abstract
A method and an apparatus for purifying water including groundwater contaminated with a pollutant such as organohalogenated compounds are provided. The contaminated water is purified by aeration to expel the pollutant into gas phase, and the pollutant containing gas is then mixed with a chlorine-containing gas under light irradiation to decompose the pollutant, where the chlorine-containing gas may generated from functional water by aeration.
Claims43
A purifying apparatus for contaminated water comprising:
- an aerator in which a contaminated water containing a pollutant is aerated with a gas to generate a gas containing the pollutant;
- a chlorine-containing gas generator that generates a chlorine-containing gas;
- a mixing section where the pollutant-containing gas generated from the contaminated water and the chlorine-containing gas generated in the chlorine-containing gas generator are mixed;
- and
- light-irradiation means for irradiating the mixed gas with light to decompose the pollutant contained in the mixed gas.
A method for purifying contaminated water comprising the steps of:
- obtaining a pollutant-containing gas by aerating a contaminated water containing a pollutant;
- obtaining a chlorine-containing gas;
- mixing the pollutant-containing gas and the chlorine-containing gas to form a mixed gas;
- decomposing the pollutant in the mixed gas by irradiating with light the mixed gas introduced into a treatment region in a treatment tank;
- and
- discharging the mixed gas after decomposition treatment from the treatment region.
A purifying apparatus for contaminated water, comprising:
- an aerator in which a contaminated water containing a pollutant is aerated with a gas to generate a gas containing the pollutant;
- a gas generator that generates a gas that generates radicals under light-irradiation;
- a mixing section where the pollutant-containing gas generated from the contaminated water and the gas generated in the gas generator are mixed to obtain a mixed gas;
- and
- a light-irradiator that irradiates the mixed gas with light to decompose the pollutant contained in the mixed gas wherein the gas used to aerate the contaminated water is different from the gas that generates radicals under light-irradiation.
A method for purifying contaminated water comprising the steps of:
- obtaining a pollutant-containing gas by aerating a contaminated water containing a pollutant;
- obtaining a gas that generates radicals under light-irradiation;
- mixing the pollutant-containing gas and the gas that generates radicals to form a mixed gas;
- and
- decomposing the pollutant in the mixed gas by irradiating with light the mixed gas wherein the gas used to aerate the contaminated water is different from the gas that generates radicals under light-irradiation.
An apparatus for purifying contaminated water, comprising:
- a gas supplier supplying a first gas into a contaminated water to generate a second gas containing a pollutant from the contaminated water;
- a mixing section to get a mixed gas by mixing the second gas and a third gas that generates radicals under light-irradiation;
- and
- a light-irradiation unit that irradiates light to the mixed gas wherein the first gas is different from the third gas.
A method for purifying contaminated water, comprising the steps of:
- supplying a first gas into a contaminated water to generate a second gas containing a pollutant from the contaminated water;
- mixing the second gas and a third gas that generates radicals under light-irradiation to form a mixed gas;
- and
- irradiating light to the mixed gas to decompose the pollutant in the mixed gas wherein the first gas is different from the third gas.
Dependencies are inferred from the claim text.