染料中间体废水多相催化氧化中几种催化剂的筛选研究

A SELECTION STUDY OF SEVERAL CATALYTISTS IN MULTI-PHASE CATALYTIC OXIDATION OF DYE INTERMEDIATE WASTEWATER

对于高浓度染料中间体废水多相催化氧化处理工艺的催化剂进行了研制工作，选择了染料中间体废水中的吐氏酸废水为处理对象。结果表明，过渡金属氧化物中Ｎｉ２Ｏ３与ＭｎＯ２是具有较高催化活性的组分，Ｃｕ、Ｆｅ等金属的氧化物没有明显的催化活性，但与Ｎｉ，Ｍｎ等组分相混合，却能体现较高的催化活性，而且，添加少量的Ｋ２Ｏ具有明显的助催化作用。对ＣＯＤ为１５００ｍｇ／Ｌ左右的叶氏酸废水，在Ｏ３投加量达１ｇ／Ｌ时，ＣＯＤ去除率超过５０％。

The catalysts in the catalytic ozonation process of high concentrated dye intermediate wastewater are studied. The tobias acid wastewater is selected to be treated. The results show that NiO 3 and MnO have high catalytic activation in ozonation reaction. Although the oxidation of Cu or Fe has not the significant catalytic reaction, in mixture with Ni and Mn, they showed the higher catalytic activation. Addion of K 2O as catalytic assistant could obviously improve the catalytic activation. COD removal rate of tobias acid wastewater with COD of 1500mg/L reached to above 50% when ozone dosage was 1g/L.