UV-H_2O_2消毒对水中余氯含量衰减的影响研究
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摘要
以紫外线-双氧水(UV-H2O2)为研究对象,研究了UV-H2O2消毒对水中余氯含量衰减的影响,并考察了UV辐照度、H2O2含量以及初始氯含量、TOC、pH和温度等对余氯含量衰减的影响。结果表明,UV辐照时间和辐照度、H2O2含量的增加会加速余氯含量的衰减;初始氯含量越小,余氯含量的衰减速率越快;余氯含量的衰减属于酸催化反应,pH的降低会促进余氯衰减;温度的升高以及水中有机物含量的增加也会加速余氯含量的衰减。
The effect of UV-H2O2disinfection on the decay of residual chlorine was investigated.The effect of Ultraviolet intensity,hydrogen peroxide concentration,as well as water quality parameters including initial residual chlorine concentration,total organic carbon concentration,pH and temperature on residual chlorine decay were also investigated.Results show that the decay rate of residual chlorine increases with the enhancement of UV radiation time,UV radiation intensity and hydrogen peroxide concentration.The lower of initial residual chlorine concentration,the more higher of decay rate of residual chlorine gets.The decay reaction of residual chlorine is a type of acid-catalysis,and lower pH elevates its rate.In addition,the decay rate of chlorine increases with the increment of temperature and total organic carbon concentration.
The effect of UV-H2O2disinfection on the decay of residual chlorine was investigated.The effect of Ultraviolet intensity,hydrogen peroxide concentration,as well as water quality parameters including initial residual chlorine concentration,total organic carbon concentration,pH and temperature on residual chlorine decay were also investigated.Results show that the decay rate of residual chlorine increases with the enhancement of UV radiation time,UV radiation intensity and hydrogen peroxide concentration.The lower of initial residual chlorine concentration,the more higher of decay rate of residual chlorine gets.The decay reaction of residual chlorine is a type of acid-catalysis,and lower pH elevates its rate.In addition,the decay rate of chlorine increases with the increment of temperature and total organic carbon concentration.
引文
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[15]罗旖旎,黄赛琴,何文杰.余氯在主体水中衰减情况的分析[J].哈尔滨商业大学学报,2006,22(5):38-42.
[16]Hua F,West J R,Barker R A,et al.Modelling of chlorine decay inmunicipal water supplies[J].Water Research,1999,33(12):2735-2746.
[17]Powell J C,Hallam N B,West J R,et al.Factors which control bulkchlorine decay rates[J].Water Research,2000,34(1):117-126.
[2]张永吉,刘文君.紫外线对自来水中微生物的灭活作用[J].中国给水排水,2005,21(9):1-4.
[3]Donna S,Erin A,Rebecca N,et al.Comparative effectiveness ofmembrane bioreactors,conventional secondary treatment,and chlorineand UV disinfection to remove microorganisms from municipalwastewaters[J].Water Research,2012,46(13):4164-4178.
[4]Guo M,Huang J,Hu H,et al.UV inactivation and characteristics afterphotoreactivation ofEscherichia coli with plasmid:health safetyconcern about UV disinfection[J].Water Research,2012,46(13):4031-4036.
[5]张永吉,刘文君,张琳.氯对紫外线灭活枯草芽孢杆菌的协同作用[J].环境科学,2006,27(2):329-332.
[6]吴东海,尤宏,孙丽欣,等.紫外/臭氧复合杀灭水中细菌性能研究[J].哈尔滨工业大学学报,2010,42(11):1793-1797.
[7]Mamane H,Shemer H,Linden K G.Inactivation ofE-coli,B-subtilisspores,and MS2,T4,and T7 phage using UV/H2O2advanced oxidation[J].Journal of Hazardous Materials,2007,146(3):479-486.
[8]Koivunen J,Heinonen-Tanski H.Inactivation of enteric microorganismswith chemical disinfectants,UV irradiation and combined chemical/UV treatments[J].Water Research,2005,39(8):1519-1526.
[9]Chu W.Modeling the quantum yields of herbicide 2,4-D decay inUV/H2O2process[J].Chemosphere,2001,44(5):935-941.
[10]Zamy C,Mazellier P,Legube B.Phototransformation of selectedorganophosphorus pesticides in dilute aqueous solutions[J].WaterResearch,2004,38(9):2305-2314.
[11]GB5749-2006生活饮用水卫生标准[S].
[12]Pontius F W.Regulations in 2000 and beyond[J].Journal AmericanWater Works Association,2000,92(3):40-53.
[13]Linden K G,Shin G A,Sobsey M D.Relative efficacy of UVwavelengths 246 for the inactivation of Cryptosporidium parvum[J].Water Science and Technology,2001,43(12):171-174.
[14]Sommer R,Pribil W,Appelt S,et al.Inactivation of bacteriophagesin water by means of non-ionizing(UV-253.7 nm)and ionizing(gamma)radiation:a comparative approach[J].Water Research,2001,35(13):3109-3116.
[15]罗旖旎,黄赛琴,何文杰.余氯在主体水中衰减情况的分析[J].哈尔滨商业大学学报,2006,22(5):38-42.
[16]Hua F,West J R,Barker R A,et al.Modelling of chlorine decay inmunicipal water supplies[J].Water Research,1999,33(12):2735-2746.
[17]Powell J C,Hallam N B,West J R,et al.Factors which control bulkchlorine decay rates[J].Water Research,2000,34(1):117-126.