原位产H_(2)O_(2)催化臭氧饮用水深度处理中试  

Pilot Test on Ozone Catalyzed by In-Situ Production of H_(2)O_(2) for Advanced Treatment of Drinking Water

作　　者：朱瑾 汪文强 季献华 田聃 周鹏 刘鼎 ZHU Jin;WANG Wenqiang;JI Xianhua;TIAN Dan;ZHOU Peng;LIU Ding(Research Institute for Environmental InnovationTsinghua,Suzhou215000,China;Jiangsu Jingyuan Environmental Protection Co.,Ltd.,Nantong226000,China;College of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou215000,China)

机构地区：[1]清华苏州环境创新研究院,江苏苏州215000 [2]江苏京源环保股份有限公司,江苏南通226000 [3]苏州科技大学环境科学与工程学院,江苏苏州215000

出　　处：《净水技术》2023年第9期74-79,209,共7页Water Purification Technology

摘　　要：近年来,高品质供水受到广泛关注,而单一技术对污染物的深度处理效果有限。因此,文中以河北省某水厂高密度沉淀池出水为研究对象,首先构建了以电催化臭氧-生物活性炭(electro-peroxone-biological activated carbon,EP-BAC)为主体工艺的饮用水深度处理中试装置,探究了其对常规指标包括CODMn、UV254的去除效果,确定了最优运行条件。此外,对优化后的系统稳定运行效果进行研究,关注了系统对嗅味物质2-甲基异莰醇(2-MIB)的去除能力,并分析了系统的经济性。结果表明,EP-BAC中试系统具有很好的深度处理效果,最佳运行条件:进水流量为2 m^(3)/h,水温为20~25℃,氧化停留时间为30 min,BAC接触时间为40 min,H_(2)O_(2)质量浓度为1 mg/L,O_(3)质量浓度为1.5 mg/L,O_(3)与H_(2)O_(2)摩尔比为1∶1。经30 d持续运行测试,系统可以有效、稳定地运行。通过测算,该系统吨水运行成本为0.93元。整个工艺无二次污染产生,绿色安全,工程应用将具有明显的性能优势。In recent years,high-quality water supply has received widespread concern,while a single technology has limited effect on advanced treatment.Thus,this study was conducted on purification of a high-density sedimentation tank effluent from a water treatment plant(WTP)in Hebei Province,and a pilot scale equipment for advanced treatment of drinking water with electro-peroxone-biological activated carbon(EP-BAC)as the main process was constructed to investigate its effect on the removal of conventional indices,including CODMn and UV254,and to determine the optimal operating conditions.Moreover,the stability of optimized system was studied,focusing on the removal effect of taste and odor(T&O)compounds-2-methylisobornyl alcohol(2-MIB),and the economy of the system was analyzed.The results showed that the EP-BAC pilot system had decent effect on advanced treatment.The optimal operating conditions were determined to be 2 m^(3)/h of the influent flow rate,20~25℃of the water temperature,30 min of the oxidation duration,40 min of BAC contact time,1 mg/L of H_(2)O_(2) concentration,1.5 mg/L of O_(3) concentration,and 1∶1 of the molar ratio of O_(3) to H_(2)O_(2).The system could operate effectively and stably through 30 days of continuous operation test,and the treatment cost of the system was 0.93 yuan per ton of water.The system is green and safe,with no secondary pollution generated throughout the process,thus providing apparent performance advantages when applied in engineering.

关 键 词：饮用水 原位产 H_(2)O_(2) 电催化臭氧 深度处理 COD 2-甲基异莰醇(2-MIB) 

分 类 号：TU991[建筑科学—市政工程]