应对南方某水厂土霉嗅味的活性炭技术  

Powdered activated carbon for treatment of musty odor in a Southern China water treatment plant

作　　者：吕强 魏群山[1,2] 黄鑫 杨凯 武洋 唐立朋 贾泽宇 于建伟 石宝友[3,6] LYU Qiang;WEI Qunshan;HUANG Xin;YANG Kai;WU Yang;TANG Lipeng;JIA Zeyu;YU Jianwei;SHI Baoyou(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry,Shanghai 201620,China;Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Shenzhen Water（Group）Co.Ltd.,Shenzhen 518031,China;Shenzhen Baoan Shajing Water Supply Co.Ltd.,Shenzhen 518104,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]国家环境保护纺织工业污染防治工程技术中心,上海201620 [3]中国科学院生态环境研究中心中国科学院饮用水科学与技术重点实验室,北京100085 [4]深圳市水务(集团)有限公司,深圳518031 [5]深圳市宝安沙井自来水有限公司,深圳518104 [6]中国科学院大学,北京100049

出　　处：《环境工程学报》2018年第11期3034-3042,共9页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2015ZX07406001);国家重点研发计划项目(2016YFCO400501);国家自然科学面上基金资助项目(21876025)

摘　　要：粉末活性炭(PAC)是应对季节性嗅味问题的主要处理技术,选择合适的活性炭、确定投加条件等因素对于水厂的高效运行等具有重要意义。针对南方某水厂存在的季节性嗅味问题,选择了国内9种常用PAC(包括3种煤质炭,3种木质炭,3种椰壳炭),对其吸附能力及处理成本进行比较,同时对该水厂在用PAC的处理效果、原有预氧化工艺(预加次氯酸钠及高锰酸钾)的影响等条件进行评价。结果表明:9种PAC中碘值为1 030mg·g^(-1)的椰壳炭吸附能力最强,对150 ng·L^(-1)的2-甲基异崁醇(2-MIB)吸附容量为6.2 ng·mg^(-1)。水厂的预氧化工艺会显著降低PAC对2-MIB、土臭素(GSM)的吸附效果(分别降低29.5%、31.6%)。综合处理效果和经济成本后,碘值为800 mg·g^(-1)的煤质炭对该水厂水源条件下的嗅味问题处理效果最优,在将2-MIB浓度由150 ng·L^(-1)处理至嗅阈值以下时,水的活性炭处理成本为0.3元·t^(-1)。Powdered activated carbon（PAC） adsorption is the main technique for the treatment of seasonal odor problems, the selection of type and dosage of PAC is significant for a water treatment plant（WTP）. To deal with seasonal taste and odor problems in a Southern China WTP, in this study the adsorption ability and treatment cost of 9 kinds of common PACs（including 3 kinds of coal activated carbon, 3 kinds of wooden activated carbon and 3 kinds of coconut shellactivated carbon） for 2-methylisoborneol（2-MIB） and geosmin（GSM） removal were compared. Additionally, the influence of pre-oxidation process（sodium hypochlorite and potassium permanganate）on PAC adsorption was taken also into consideration. Results show that the coconut shell activated carbon with an iodine value of 1 030 mg·g（-1） presented the highest adsorption capacity among these 9 types of common PACs,and its adsorption capacity for 2-MIB（150 ng·L（-1）） is 6.2 ng·mg（-1）. However, the pre-oxidation process significantly reduced the PAC adsorption capacity for 2-MIB and GSM by 29.5% and 31.6%, respectively. Through comprehensive consideration of the treatment efficiency and cost, coal activated carbon with an iodine value of 800 mg·g（-1） is the most cost-effective PAC, it could remove 2-MIB with an initial content of 150 ng·L（-1） down to below the olfactory threshold, and the treating cost is only 0.3 yuan·t（-1）.

关 键 词：饮用水 活性炭 嗅味 吸附 

分 类 号：X703[环境科学与工程—环境工程]