水源水消毒副产物生成势与UV_(254)/DOC的相关性研究
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摘要
使用XAD-4和XAD-8树脂对宜兴3个水源原水中DOM进行亲疏水性分类,采用优化方法测定分类水样的DBPFP,并进行DBPFP与DOM量化指标之间的相关性分析,以确定实际生产过程DBPs生成量的主要影响因素.由三维荧光光谱图得到3个水源原水DOM组成差异较大,水质区别明显.由亲疏水性分类分析发现原水中疏水性和亲水性DOM含量较高,疏水性DOM水样的DBPFP大于原水,得到水样的DBPFP主要取决于DOM与消毒剂反应产生DBPs的效率,而不是DOM的量.引入UV_(254)/DOC这个指标,发现不同分类水样UV_(254)/DOC的差异情况与其DBPFP相吻合,对两者进行回归分析,发现水样THMFP和DHAAFP与UV_(254)/DOC之间存在明显的线性关系,线性可决系数R2分别为0.89和0.85.因此研究减小原水UV_(254)/DOC的技术工艺对于控制给水中DBPs浓度具有重要意义.
The dissolved organic matter( DOM) in raw water of three sources in Yixing was classified according to its hydrophilic-hydrophobic property by using XAD-4 and XAD-8 resin. Then disinfection byproduct forming potential( DBPFP) of the water samples was determined using optimized method.Finally,the correlation between DBPFP and quantitative index of DOM was analyzed to determine the main factor influencing DBPs production under practical condition. Significant difference of DOM composition in raw water of three sources was found in three-dimensional fluorescence spectra,indicating obviously different water quality. Also it was found that raw water was high in hydrophobic and hydrophilic DOM. For the DBPFP,hydrophobic DOM is higher than that of raw water,the DBPFP of water sample mainly depends on the reaction rate of DOM and disinfectant to generate DBPs instead of the amount of DOM. The concept of UV_(254)/DOC was put forward,and it was found that the variance trend of UV_(254)/DOC of different water samples coincides with DBPFP. Then regression analysis was conducted between DBPFP and UV_(254)/DOC. The result showed clear linear relationship between THMFP/DHAAFP and UV_(254)/DOC with linear correlation coefficients of 0. 89 and 0. 85 respectively. So it is very significant to research the technology on decreasing UV_(254)/DOC of raw water to control the concentration of DBPs in supplied water.
The dissolved organic matter( DOM) in raw water of three sources in Yixing was classified according to its hydrophilic-hydrophobic property by using XAD-4 and XAD-8 resin. Then disinfection byproduct forming potential( DBPFP) of the water samples was determined using optimized method.Finally,the correlation between DBPFP and quantitative index of DOM was analyzed to determine the main factor influencing DBPs production under practical condition. Significant difference of DOM composition in raw water of three sources was found in three-dimensional fluorescence spectra,indicating obviously different water quality. Also it was found that raw water was high in hydrophobic and hydrophilic DOM. For the DBPFP,hydrophobic DOM is higher than that of raw water,the DBPFP of water sample mainly depends on the reaction rate of DOM and disinfectant to generate DBPs instead of the amount of DOM. The concept of UV_(254)/DOC was put forward,and it was found that the variance trend of UV_(254)/DOC of different water samples coincides with DBPFP. Then regression analysis was conducted between DBPFP and UV_(254)/DOC. The result showed clear linear relationship between THMFP/DHAAFP and UV_(254)/DOC with linear correlation coefficients of 0. 89 and 0. 85 respectively. So it is very significant to research the technology on decreasing UV_(254)/DOC of raw water to control the concentration of DBPs in supplied water.
引文
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徐鹏,沈吉敏,李太平,等.2015.消毒副产物生成势测定方法的优化研究[J].中国给水排水,31(17):45-49
徐鹏,袁晓明,武照远,等.2016.给水消毒过程中卤素离子间的竞争研究[J].中国给水排水,32(13):41-45
Zhang H,Qu J,Liu H,et al.2008.Isolation of dissolved organic matter in effluents from sewage treatment plant and evaluation of the influences on its DBPs formation[J].Separation and Purification Technology,64(1):31-37
Ates N,Kaplan S S,Sahinkaya E,et al.2007.Occurrence of disinfection by-products in low DOC surface waters in Turkey[J].Journal of Hazardous Materials,142(1):526-534
Chang H,Chen C,Wang G.2013.Characteristics of C-,N-DBPs formation from nitrogen-enriched dissolved organic matter in raw water and treated wastewater effluent[J].Water Research,47(8):2729-2741
洪华嫦,林红军,丁林贤,等.2012.几种模型物质在氯化中形成THMs、HAAs的特性研究[J].环境科学学报,32(08):1850-1855
蒋绍阶,刘宗源.2002.UV254作为水处理中有机物控制指标的意义[J].重庆建筑大学学报,2:61-65
Kwon B,Lee S,Cho J,et al.2005.Biodegradability,DBP formation,and membrane fouling potential of natural organic matter:characterization and controllability[J].Environmental Science&Technology,39(3):732-739
Liang L,Singer P C.2003.Factors influencing the formation and relative distribution of haloacetic acids and trihalomethanes in drinking water[J].Environmental Science&Technology,37(13):2920-2928
罗妮娜.2016.新型消毒副产物碘代乙酸急性暴露诱导斑马鱼肝脏氧化损伤的机理研究[J].环境科学学报,36(8):3088-3094
Panyapinyopol B,Marhaba T F,Kanokkantapong V,et al.2005.Characterization of precursors to trihalomethanes formation in Bangkok source water[J].Journal of Hazardous Materials,120(1):229-236
Rook J J.1974.Formation of haloforms during chlorination of natural waters[J].Water Treat Exam,23:234-243
Singer P C,Reckhow D A.1999.Chemical oxidation[M].New York:American Water Works Association
宋倩云,宁萍,孙洪杰,等.2017.长三角部分水源水氯化消毒后卤乙酸形成的多元回归模型研究[J].环境科学学报,37(6):2048-2054
徐鹏,聂长鑫,苏功军,等.2017.基于动力学的消毒副产物预测模型的建立与检验[J].中国给水排水,33(15):42-46,51
徐鹏,沈吉敏,李太平,等.2015.消毒副产物生成势测定方法的优化研究[J].中国给水排水,31(17):45-49
徐鹏,袁晓明,武照远,等.2016.给水消毒过程中卤素离子间的竞争研究[J].中国给水排水,32(13):41-45
Zhang H,Qu J,Liu H,et al.2008.Isolation of dissolved organic matter in effluents from sewage treatment plant and evaluation of the influences on its DBPs formation[J].Separation and Purification Technology,64(1):31-37
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