METHOD AND APPARATUS FOR REMOVING OXYGEN DISSOLVED IN WATER AND CATALYST FOR REMVOING OXYGEN DISSOLVED IN WATER

摘要

PROBLEM TO BE SOLVED: To swiftly and securely remove oxygen dissolved in water to be treated with a small amount of a catalyst.;SOLUTION: A catalyst for removing oxygen dissolved in water carries metal nano-colloid particles of a platinum group having an average particle size of 1 to 50 nm and preferably 1.4 to 10 nm, and a standard deviation of not more than 30% and preferably not more than 20% of the average particle size on a carrier. The catalyst carrying nano-colloid platinum group metal fine particles on the carrier has a large specific surface area of a catalyst metal, thereby significantly increasing a reaction rate to allow an increase in space velocity (SV) when water and the catalyst are brought into contact with each other and the size of an apparatus is reduced. Further, since the amount of the catalyst to be used, the amount of a metal carried, and the amount of the catalyst used in relation to the amount of water to be treated are reduced, an influence caused by outflow of the metal is reduced, thereby reducing treatment costs and enhancing the quality of treated water.;COPYRIGHT: (C)2008,JPO&INPIT