臭氧光催化氧化对印染废水的深度处理研究  

Application of Ozone /Photocatalytic Oxidation to Advanced Treatment of Printing and Dyeing Wastewater

作　　者：崔迪[1] 庞长泷[1,2] 孔祥震[1] 陈旭[1] 李昂[1] 马放[1,2] 杨基先[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [2]哈尔滨工业大学宜兴环保研究院,江苏宜兴214200

出　　处：《中国给水排水》2013年第23期114-116,共3页China Water & Wastewater

摘　　要：采用臭氧光催化氧化技术深度处理含有印染废水的城市污水,考察了臭氧浓度和水力停留时间对COD去除率的影响,并对比分析了单纯臭氧氧化与臭氧光催化氧化对低浓度有机废水的处理效能。研究结果显示:试验水质下,臭氧光催化氧化的最佳臭氧强度为60%、最佳水力停留时间为21 min;最佳工况下对COD的去除率可达到78%,较单纯臭氧氧化对COD的去除率高9%。此外,经臭氧光催化氧化处理后,废水的可生化性得到改善,且BOD5/COD值随着水力停留时间的延长而增大。Ozone/photocatalytic oxidation was used for advanced treatment of municipal wastewater containing printing and dyeing wastewater. The effects of ozone concentration and hydraulic retention time on COD removal were investigated. The treatment efficiency of low-concentration organic wastewater by ozonation was compared with that by ozone/photocatalytic oxidation. The results indicated that the optimal conditions of ozone/photocatalytic oxidation were as follows： 03 concentration of 60% and hydraulic re- tention time of 21 min. Under these conditions, the COD removal rate was 78%, which increased by 9% compared with ozonation. The BODJCOD ratio increased with the extension of hydraulic retention time, and the biodegradability of wastewater was improved after ozone/photocatalytic oxidation.

关 键 词：臭氧光催化氧化 印染废水 可生化性 

分 类 号：X703[环境科学与工程—环境工程]