难降解高浓度有机废水催化湿式氧化净化技术 Ⅱ 反应工艺条件的研究

TREATMENT OF WASTEWATER WITH HIGH CONCENTRATION OF ORGANIC MATTERS BY CATALYTIC WET OXIDATION METHOD Ⅱ.The Study of Reaction Conditions

通过对反应温度、压力、液体空速、空气／水比及原水ｐＨ值诸工艺条件的考察，确定催化湿式氧化处理含氨和高ＣＯＤ值的焦化污水的最佳工艺条件为２７０℃，９．０ＭＰａ，空气／水（体）＝２１０∶１，原水ｐＨ＝９．８，液体空速＝２．０ｈ－１。在该条件下所研制的催化剂对ＣＯＤＣｒ及ＮＨ３－Ｎ的去除率分别达到９９．６％，经处理的焦化污水水质优于国家环保排放标准的要求。

Reaction conditions of Catalytic Wet Oxidation Process used for treatment of coke oven wastewater containing high concentration of ammonia and COD are studied. The decomposition rate of COD and NH 3 N decreases with increase of space velocity of wastewater and decrease of reaction pressure. Under a fix pressure the decomposition rate of COD and NH 3 N increases with the increase of temperature through a maximum value then decreases. At the best reaction conditions:T=210∶1(Volume),pH=9.8,the decomposition rate of COD and NH 3 are 99.1% and 99.6% respectively with the catalyst prepared by us.