臭氧—生物活性炭工艺对微污染长江原水中有机物的去除特性  

Characteristics of Organic Matter Removal of Micro-Polluted Raw Water from Yangtze River with Ozone-Biological Activated Carbon(O_3-BAC) Treatment Processes

作　　者：薛琦[1] 朱光灿[1] 戴小冬[2] 吕锡武[1] 

机构地区：[1]东南大学能源与环境学院,环境医学工程教育部重点实验室,江苏南京210096 [2]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《净水技术》2015年第4期36-41,共6页Water Purification Technology

基　　金：国家"十二五"水专项课题(2014ZX07405002)

摘　　要：采用中试装置研究了臭氧—生物活性炭工艺对长江南京段微污染原水中有机物去除的特性,考察了臭氧投加量和臭氧接触时间对臭氧氧化、生物活性炭单元中DOC、BDOC、CODMn、UV254和微量有机污染物去除的影响。结果表明臭氧投加量为2 mg/L、臭氧停留时间为10 min时,臭氧氧化单元CODMn和UV254的去除率分别达到18.8%和47.5%,DOC和BDOC分别增长了30.3%和128.2%,生物活性炭滤柱对四种污染物指标的去除率分别为37.7%、88.7%、60.7%和37.7%。各单元在适宜工况下运行时,整个工艺对1,2,4-三氯苯、氯代苯、DMP、DBP和PAHs的总去除率分别为46.7%、100%、70.5%、52.5%和69.2%,高于常规处理工艺和生物强化滤池工艺。臭氧—生物活性炭工艺有效提高了有机污染物的去除效果,可保障出水水质安全。In view of the Yangtze River in Nanjing section, the pilot plant was used to study the removal characteristics of organics by the technology of O3- BAC, and the removal effect of organic matters was investigated under the condition of different dosage of ozone and ozone contact time. The results show that when ozone dosage is 2 mg/L, and the ozone contact time is 10 min, the removal rates of CODMn, UV254 are 18.8%, 47.5% while DOC, BDOC increase by 30.3% and 128.2% in the ozonation unit; the removal rates of four indexes reach 37.7%, 88.7%, 60.7% and 37.7% in the BAC column. The removal rates of 1,2,4 - trichlorobenzene, chlorinated benzene, DMP, DBP and PAHs are 46.7%, 100%, 70.5 %, 52.5% and 69.2%, respectively in the O3- BAC process, higher than that of conventional treatment process and biological enhanced aerated filter process. Therefore, the O3- BAC process can not only effectively improve the removal efficiency of organic pollutants, but also can ensure the water quality security.

关 键 词：臭氧-生物活性炭 参数优化 有机污染物 微污染原水 长江 

分 类 号：TU991.2[建筑科学—市政工程]