UV/Fenton氧化与生化组合技术处理磺化泥浆体系钻井废水  

TREATMENT OF DRILLING WASTEWATER BY THE COMBINED UV/FENTON AND BIOLOGICAL PROCESSES

作　　者：张红岩[1] 王伟财[1] 吕荣湖[1] 郭振英[1] 郭绍辉[1] 

机构地区：[1]中国石油大学(北京)化学科学与工程学院,北京102249

出　　处：《水处理技术》2008年第9期54-57,共4页Technology of Water Treatment

基　　金：中国石油天然气集团公司十五攻关项目(04A50504)

摘　　要：采用UV/Fenton氧化和生化组合技术处理磺化泥浆体系钻井废水。当用UV/Fenton氧化单独处理时,其合适的条件为n(H2O2):n(Fe2+)=40:1,pH为3～5。采用B/C和生化呼吸曲线两种方法评价了UV/Fenton氧化后水样的可生化性,结果表明钻井废水经氧化后可生化性大幅提高。采用UV/Fenton氧化和生化组合技术处理钻井废水,在预氧化阶段投加0.6Qth mg·L-1(理论投加量)和1.0Qth mg·L-1双氧水时,COD总去除率分别为82.5%和87.3%,出水可达国家一级排放标准。组合技术和单独氧化法相比,既提高了处理效率,又大大节省了双氧水的投加量。A combined UV/Fenton and biological process was used to treat drilling wastewater. Experimental results showed that when the drilling wastewater was treated by UV/Fenton oxidation alone, the appropriate condition including the ratio of H2O2 to Fe^2＋ and pH were 40：1 and 3 -5 respectively. And the biodegradability of drilling wastewater was enhanced by UV/Fenton oxidation pre-treatment. When it was treated by the combined UV/Fenton-biological processes and the concentration of H2O2 were 0.6Qth mg·L^-1 and 1.0Qth mg ·L^-1 in the pre-oxidation stage, the overall COD removal efficiency can reach 82.5% and 87.3% respectively. It reduced H2O2 dosage compare to the UV/Fenton oxidation alone.

关 键 词：钻井废水 UV/FENTON 生物处理 可生化性 

分 类 号：X703.1[环境科学与工程—环境工程]