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    • 7. 发明公开
    • CATALYST FOR TREATMENT OF WASTE WATER, AND METHOD FOR TREATMENT OF WASTE WATER USING THE CATALYST
    • 催化剂用于处理废水废物加工方法使用这种催化剂
    • EP2518024A1
    • 2012-10-31
    • EP10839189.7
    • 2010-12-08
    • Nippon Shokubai Co., Ltd.
    • NISHIKAWA, YoheiSASAKI, KoyaISHII, Tohru
    • C02F1/74B01J23/42B01J23/44B01J23/46B01J23/745B01J23/755B01J23/76B01J23/80B01J23/825B01J23/835B01J23/84B01J23/847B01J23/889
    • C02F1/725B01J23/462B01J23/63B01J23/6562B01J23/8906B01J23/894B01J23/8973B01J35/006B01J35/1014B01J37/0201B01J37/031C02F2101/38
    • A catalyst which can maintain excellent catalytic activity and excellent durability for a long period when used in a wet oxidation treatment of waste water, and a method for the wet oxidation treatment of waste water using the catalyst, are provided. Also provided is a novel method for treating a waste water containing nitrogen-containing compounds, in which a catalyst of a lower catalyst cost is used, a waste water containing nitrogen-containing compounds can be treated with high purifying performance, and superior purifying performance can be maintained. The catalyst for waste water treatment contains, as a component A, an oxide of at least one element selected from the group consisting of iron, titanium, silicon, aluminum, zirconium and cerium, and as a component B, at least one element selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium and iridium, wherein at least 70% by mass of the component B is present in the region within 1000 µm from the outer surface of the oxide of the component A, the average particle size of the component B is 0.5 nm to 20 nm, and the solid acid content of the oxide of the component A is 0.20 mmol/g or greater. he method for treating waste water includes treating a waste water containing nitrogen-containing compounds in the presence of an oxidizing agent, at a temperature equal to or higher than 100°C and lower than 370°C under the pressure conditions so as to keep the waste water in liquid phase, by using a catalyst which converts a nitrogen-containing compound into ammoniacal nitrogen (pre-catalyst) on the upstream side in the flow direction of the waste water, and a catalyst on the downstream side for treating an ammoniacal nitrogen-containing waste water (post-catalyst) on the downstream side.
    • 能够维持优异的催化活性和耐久性优异的长时间当废水的湿式氧化处理中使用的催化剂,以及使用该催化剂的废水的湿式氧化处理的方法,提供了。 这样提供了用于治疗废水含含氮化合物,其中使用较低成本的催化剂的催化剂,含有含氮化合物废水可以以高净化性能被处理的新方法,和优越的净化性能可以 维持。 用于废水处理用催化剂含有作为成分A,选自铁,钛,硅,铝,锆和铈中的至少一种元素的氧化物,和作为组分B,选自以下的至少一种元素 由B成分的质量自由银,金,铂,钯,铑,钌和铱,worin至少70%的基团存在于该区域1000微米内从组件A的氧化物的外表面,所述 B成分的平均粒径为0.5纳米至20纳米,和组分A的氧化物的固体酸的含量为0.20毫摩尔/克或更大。 他用于处理废水包括治疗废水含含氮化合物在氧化剂的存在下,在等于或高于100℃且低于370℃的压力条件下,以便保持所述的温度的方法 在液相中的废水,通过使用催化剂,其在废水的流动方向上游侧的含氮化合物转换为氨态氮(预催化剂),和用于治疗氮氨在下游侧的催化剂 在下游侧的含废水(催化剂后)。