摘要
以商业化的柱状TiO_(2)为载体,通过浸渍法制备了Ru/TiO_(2)催化剂,并应用于湿式催化氧化处理垃圾渗滤液膜浓缩液。通过单一因素试验确定了最佳工艺条件:反应温度为220℃,反应时间为2 h,空气量为理论空气量的120%,催化剂投加量为3 g/L,进水pH为9。在此最优工艺条件下,固定床连续装置连续运行240 h,COD、TN的去除率可分别稳定在80%、60%以上,催化剂性能稳定,活性组分流失少。垃圾渗滤液膜浓缩液经过湿式催化氧化处理后,废水BOD5/COD由0.03提高到0.3~0.4,可生化性得到了明显地改善。
Ru/TiO_(2) catalyst was prepared via impregnation method by supporting Ru on commercial columnar TiO_(2) supports,which was applied to degrading landfill leachate membrane concentrate by catalytic wet air oxidation.Based on single-factor experiments,the optimum conditions were as follows:the reaction temperature 220℃,the reaction time 2 h,the amount of air 120%of theoretical air demand,the dosage of catalyst 3 g/L,and pH 9.The continuous rea-ction was operated on a fixed bed reactor for 240 h under the optimum conditions,the removal rate of COD and TN were above 80%and 60%respectively,and the catalyst exhibited high stability in terms of the low loss of active com-ponents.After catalytic wet air oxidation treatment of landfill leachate membrane concentrate,BOD5/COD increased from 0.03 to 0.3-0.4,indicating the wastewater biodegradability significantly improved.
作者
陶海祥
毛兵
江海云
吴小亮
Tao Haixiang;Mao Bing;Jiang Haiyun;Wu Xiaoliang(Zhejiang Qicai ECO Technology Co.,Ltd.,Shaoxing 312000,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2021年第9期111-116,共6页
Industrial Water Treatment
关键词
湿式催化氧化
垃圾渗滤液
催化剂
可生化性
catalytic wet air oxidation
landfill leachate
catalyst
biodegradability
