臭氧生物活性炭与膜组合工艺在某水厂深度处理工艺中的应用  

Application of Combined Processes of Ozone-BAC and Membrane in Advanced Treatment of a Water Treatment Plant

作　　者：彭祥 张晓 曹勋 李寅森 丁新春 李冬梅 Peng Xiang;Zhang Xiao;Cao Xun;Li Yinsen;Ding Xinchun;Li Dongmei(Yancheng Dafeng Water Supply Co. ,Ltd. ,Dafeng 224100,China;Nanjing Universi ty ＆ Yancheng Academic of Environmental Protection Technology and Engineer ,Yancheng 224000 , C h i n a)

机构地区：[1]盐城大丰自来水有限公司,江苏大丰224100 [2]南京大学盐城环保技术与工程研究院,江苏盐城224000

出　　处：《净水技术》2018年第4期77-81,共5页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项课题(2014ZX07405002);江苏省水利科技项目新型硫铁矿人工湿地同步脱氮除磷技术研究与示范(2016047)

摘　　要：盐城市某水厂采用O_3-BAC与膜组合工艺用于饮用水深度处理。通过对各工艺出水常规指标及阴离子指标的监测表明:经O_3-BAC+超滤+纳滤膜处理工艺后,出水常规指标(浊度、氨氮、COD_(Mn))分别降至0.05 NTU、0.03 mg/L、0.65 mg/L,相比于常规处理,去除率高达99.7%、94.8%、88.3%;阴离子指标中F^-、Br^-、SO_4^(2-)未检出,Cl^-降至12.6 mg/L,NO_3^-降至1.5 mg/L,单纯常规+O_3-BAC+超滤都不能很好地去除水中阴离子。对各工艺出水(常规、O_3-BAC、超滤及纳滤)进行小试消毒,结果发现:各工艺消毒出水中DBPs依次呈降低趋势,经纳滤膜处理后,THMs及HAAs仅为2.0μg/L、50.8μg/L,表明组合工艺可以有效降低消毒出水DBPs含量,保障饮用水水质安全性。最后结合运行及建设成本,对各工艺的特点进行了对比分析,为其他水厂的升级改造提供参考。A drinking water advanced treatment system utilizing combined proc es se s of ozone-BAC and membrane is used in a water treatment plant of Yancheng City. The results indicate that the conventional index （turbidity,ammonia nitrogen, C0DMn） of effluent are reduced to 0. 05 NTU,0. 03 mg/ L and 0. 65 mg/L respectively after ozone-BAC ＋ ultrafiltration ＋ nanofiltration membrane treatment process. And the removal rates are up to 99. 7% ,94. 8% and 88.3% compared to conventional treatment. Anionic F , Br and SOj are not detected,Cl and N03 fall to 12.6 mg/L and 1.5 mg/L,respect ively. However,convent ional ＋ ozone-BAC ＋ ultrafiltration may not remove anions in water effectively. The disinfection shows that disinfection byproducts （ DBPs） in the effluent of each process（conventional p r o c e s s , o zon e -BAC, ultrafiltration and nanofiltration ） d e c r e a s e , and after nanofiltration membrane treatment,THMs and HAAs are only 2 . 0 μg/L and 5 0 . 8 μg/L, respectively. It indicates that combined process can effectively reduce the DBPs content of disin fection effluent to ensure the safety o f drinking water quality. F in a l ly , this paper compares the characteristics of each process with the operation and construction c o s t , and provides references for the upgrading of other watertreatment plants.

关 键 词：臭氧生物活性炭与膜组合工艺 深度处理 常规指标 阴离子 消毒副产物 

分 类 号：TU992.3[建筑科学—市政工程]