摘要
解决光催化剂与废水的即时分离问题是光催化氧化技术走向实际的关键之一。采用新型的实用型光催化水处理器——连续流即时分离型光催化反应器深度处理焦化废水,发现在适宜的反应时间、TiO2投加量、光辐照强度和初始pH值下是完全可行的。然后在此基础上选用H2O2和Fenton试剂为外加氧化剂,研究了氧化剂强化光催化深度处理焦化废水的效果。结果表明,在UV/TiO2氧化体系中投加H2O2或Fenton氧化剂,可显著提高光催化氧化对COD和色度的去除率;在最佳反应条件下,不同氧化体系对焦化废水的深度处理效果排序为:UV/TiO2/Fenton>UV/TiO2/H2O2>UV/TiO2。
One of the keys to promote photocatalytic oxidation technique is to solve the separation problem of photocatalyst and effluent. The continuous real-time separation type photocatalytic reactor, a new-style practical photocatalytic wastewater treatment device, was feasible for advanced treatment of co- king wastewater under appropriate reaction time, TiO2 dosage, irradiation intensity and initial pH. Then, a study on the effect of advanced treatment of coking wastewater with enhanced photocatalytic oxidation by H2O2 or Fenton reagent as oxidant was carried out. The results showed that adding H2O2 or Fenton rea- gent into the UV/TiO2 oxidation system could markedly improve the removal rates of COD and color. Un- der the optimal reaction conditions, oxidation systems listed in order of their photocatalytic oxidation rates were： UV/TiO2/Fenton 〉 UV/TiOE/H202 〉 UV/TiO2.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第3期66-69,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(51071186)
关键词
焦化废水
光催化氧化
深度处理
coking wastewater
photocatalytic oxidation
advanced treatment
