生物粉末活性炭-超滤处理饮用水膜污染分析
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摘要
对生物粉末活性炭-超滤(BPAC-UF)工艺处理地表饮用水的膜污染情况进行了研究。TMP分析表明,普通的水力反冲洗很难将吸附在膜表面的粉末活性炭冲洗掉,但经过物理强化反冲洗后TMP可以得到较好的恢复,增加NaClO维护性化学清洗后,可以很好的降低超滤膜TMP的增长速度。膜污染物质分析表明,物理反冲洗主要去除亲小分子亲水性的有机物膜污染;化学清洗主要去除疏水性的大分子腐殖质类物质。能谱分析结果说明,膜面主要污染元素是C、O,另有一些无机离子。智能傅立叶红外光谱仪分析表明,化学清洗对膜面官能团的种类没有影响,但会影响不同官能团的光谱透射比强度,从而改变了其表面性质。
The membrane fouling situation of BPAC-UF process for surface drinking water treatment was studied. TMP analysis showed that, general hydraulic backwashing could not removal the powdered activated carbon on the membrane surface, but TMP recovered well after physical enhanced backwashing. The growth rate of UF membrane TMP decreased well when chemical cleaning with Na Cl O was used. Membrane pollutant analysis showed that, hydraulic back wash could mainly remove hydrophilic organic pollutant, and chemical back wash could mainly remove hydrophobic humic substances.The result of EDS showed that the main elements resulting in membrane fouling were carbon, oxygen and other inorganic ions. The result of ATR-FTIR showed chemical back wash could barely change the category of functional groups on membrane, but it could change the luminousness of different functional groups to change the chemical property of membrane.
The membrane fouling situation of BPAC-UF process for surface drinking water treatment was studied. TMP analysis showed that, general hydraulic backwashing could not removal the powdered activated carbon on the membrane surface, but TMP recovered well after physical enhanced backwashing. The growth rate of UF membrane TMP decreased well when chemical cleaning with Na Cl O was used. Membrane pollutant analysis showed that, hydraulic back wash could mainly remove hydrophilic organic pollutant, and chemical back wash could mainly remove hydrophobic humic substances.The result of EDS showed that the main elements resulting in membrane fouling were carbon, oxygen and other inorganic ions. The result of ATR-FTIR showed chemical back wash could barely change the category of functional groups on membrane, but it could change the luminousness of different functional groups to change the chemical property of membrane.
引文
[1]蒋绍阶,刘宗源.UV254作为水处理中有机物控制指标的意义[J].土木建筑与环境工程,2002,24(2):61-65.
[2]IMAI A,FUKUSHIMA T,MATSUSHIGE K,et al.Fractionation and characterization of dissolved organic matter in shallow eutrophic lake,its inflowing rivers,and other organic matter sources[J].Water Research,2001,35(17):4019-4028.
[3]齐鲁.浸没式超滤膜处理地表水的性能及膜污染控制研究[D].哈尔滨:哈尔滨工业大学,2010.
[4]袁哲,陈卫.SUVA值与超滤膜污染的关系[J].华中科技大学学报,2011(2):129-132.
[5]罗敏,王占生,候立安.纳滤膜污染的分析与机理研究[J].水处理技术,1998,34(6):10-15.
[6]江艳,沈怡,武培怡.ATR-FTIR光谱技术在聚合物膜研究中的应用[J].化学进展,2007,19(1):173-185.
[7]黄红英,尹齐和.傅里叶变换衰减全反射红外光谱法(ATR--FTIR)的原理与应用进展[J].中山大学研究生学刊:自然科学医学版,2011(1):20-31.
[2]IMAI A,FUKUSHIMA T,MATSUSHIGE K,et al.Fractionation and characterization of dissolved organic matter in shallow eutrophic lake,its inflowing rivers,and other organic matter sources[J].Water Research,2001,35(17):4019-4028.
[3]齐鲁.浸没式超滤膜处理地表水的性能及膜污染控制研究[D].哈尔滨:哈尔滨工业大学,2010.
[4]袁哲,陈卫.SUVA值与超滤膜污染的关系[J].华中科技大学学报,2011(2):129-132.
[5]罗敏,王占生,候立安.纳滤膜污染的分析与机理研究[J].水处理技术,1998,34(6):10-15.
[6]江艳,沈怡,武培怡.ATR-FTIR光谱技术在聚合物膜研究中的应用[J].化学进展,2007,19(1):173-185.
[7]黄红英,尹齐和.傅里叶变换衰减全反射红外光谱法(ATR--FTIR)的原理与应用进展[J].中山大学研究生学刊:自然科学医学版,2011(1):20-31.