【摘要】 以ZSM-5分子筛为载体,铈(Ce)、锰(Mn)、镍(Ni)、铜(Cu)为活性组分,制备金属负载型催化剂,催化臭氧化处理苯酚废水。采用浸渍法制备催化剂,并对其进行表征。考察了活性组分、臭氧投加量,催化剂质量浓度、pH等因素对苯酚废水的处理效果。结果表明,在废水pH=7、催化剂质量浓度为1.00 g/L、臭氧投加量为44.0 mg/min、反应时间为60 min的条件下,Ce-ZSM-5的催化效果最好,COD去除率为85.74%。加入Ce-ZSM-5后,可节约大约80%的臭氧量。催化剂在使用7次后,虽然降解效果有小幅度下降,但COD去除效率仍然保持在70%,证明其稳定性良好。更多还原

【Abstract】 ZSM-5 molecular sieve was used as carrier, cerium(Ce), manganese(Mn), nickel(Ni) and copper(Cu) were used as active components to prepare metal-supported catalyst to catalyze ozonation treatment of phenol wastewater. The catalyst was prepared by impregnation method and characterized. The effects of active components, ozone dosage, catalyst concentration and pH on the treatment of phenol wastewater were investigated. The results showed that Ce-ZSM-5 had the best catalytic effect and COD removal rate under the conditions of pH=7, catalyst concentration of 1.00 g/L, ozone dosage of 44.0 mg/min and reaction time of 60 min. It is 85.74%. When Ce-ZSM-5 is added, about 80% of the ozone can be saved. It shows good stability which the COD removal ratio reached about 70% after the catalyst repeatedly used for 7 times.更多还原