摘要
以氢氧化铁、活性氧化铝以及拟薄水铝石粉末为原料,稀酸为胶溶剂,通过直接混合、捏合、挤条成型的方式,经高温焙烧一步成功制备4种具有不同Fe_(2)O_(3)含量金属氧化物共混型臭氧催化剂颗粒,并详细探究其催化氧化降解苯酚及煤化工实际废水的性能。结果表明:(1)在试验评价条件下,Fe_(2)O_(3)质量分数为7.5%的催化剂表现出最优催化氧化降解性能,当进水TOC控制在87.5 mg/L水平时,苯酚降解效率为71.5%,煤化工实际废水降解效率为53.4%;(2)在最优Fe_(2)O_(3)含量催化剂的基础上,通过浸渍方式耦合CuO活性组分,煤化工实际废水降解效率进一步提升至61.5%;(3)针对煤化工废水,通过对比不同金属氧化物臭氧催化剂在固定床连续运行催化氧化体系的降解效率,自制催化剂的降解效率优于市售同类型的臭氧催化剂,表现出良好的工业化运用前景。
Using iron hydroxide,activated alumina and pseudo-bauxite powder as raw materials and dilute acid as adhesive solvent,four kinds of metallic oxide blended ozone catalysts with different iron oxide contents were successfully prepared by means of mixing kneading,extrusion molding and high-temperature roasting in one step,and the catalytic oxidative degradation of phenol as well as coal chemical wastewater were also investigated in detail.The results show that:(1)Under the experimental evaluation conditions,the catalyst with 7.5%Fe_(2)O_(3) mass fraction shows the best catalytic oxidative degradation performance.When the TOC of flooding waters were controlled at 87.5 mg/L,the degradation efficiency of phenol is 71.5%,and that of actual coal chemical wastewater is 53.4%.(2)Based on the catalyst with the optimal Fe_(2)O_(3) content,the degradation efficiency of coal chemical wastewater was further increased to 61.5%by impregnating copper oxide active components.(3)For coal chemical wastewater,by comparing the degradation efficiency of oxidation systems with different metallic oxide ozone catalysts in continuous operation of fixed beds,the degradation efficiency of self-made catalysts was better than that of commercially available ozone catalysts with the same type,showing a good industrial application prospect.
作者
李晓晖
李宇航
邹海旭
李海胜
刘春红
高强生
卓佐西
LI Xiaohui;LI Yuhang;ZOU Haixu;LI Haisheng;LIU Chunhong;GAO Qiangsheng;ZHUO Zuoxi(Zhejiang Baimahu Laboratory Co.,Ltd.,Hangzhou 310051,China;Yili Xintian Coal Chemical Co.,Ltd.,Yili 835100,China)
出处
《给水排水》
CSCD
北大核心
2024年第4期88-95,共8页
Water & Wastewater Engineering
基金
浙江省重点研发计划(2021C03170)
浙江省能源集团科技项目(ZNKJ-2022-120
SYSKJ-2021-002)。
关键词
臭氧催化剂
金属氧化物
煤化工废水
高级氧化
Ozone catalyst
Metallic oxide
Coal chemical wastewater
Advanced oxidation
