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利用超滤实验以及6种粉末活性炭吸附东江水有机物的水质数据,通过三维荧光光谱-平行因子分析(EEMPARAFAC),考察东江水中造成不可逆膜污染的主要组分和活性炭吸附这些组分的效果;随后进行活性炭对不可逆膜污染组分吸附效果与对应活性炭孔结构参数的相关性分析,揭示活性炭的表面物理性质对不可逆膜污染物吸附的影响.EEMPARAFAC模型识别出东江水含有2个类腐殖质荧光组分C1和C3,以及1个类蛋白质(类色氨酸)荧光组分C2,其中C2为主要不可逆膜污染物.同时,所有活性炭对3种荧光组分均有较好的吸附效果,其中对主要膜污染物C2的去除率可达54.0%~74.6%.相关性分析发现,活性炭对主要膜污染荧光组分C2吸附效果受活性炭微孔表面积的影响,而活性炭对两种次要膜污染荧光组分C1和C3吸附效果受活性炭中大孔表面积和BET比表面积影响.实验结果可为活性炭-超滤工艺处理东江水的活性炭选型提供技术指导.
The water quality data of Dongjiang water organic matter was adsorbed by ultrafiltration and six kinds of powdered activated carbon. The main components causing irreversible membrane fouling in Dongjiang water and the adsorption of these components by activated carbon were investigated by three-dimensional fluorescence spectroscopy-parallel factor analysis (EEMPARAFAC) The correlation analysis between the adsorptive effect of irreversible membrane fouling components and the corresponding pore structure parameters of activated carbon was conducted to reveal the influence of the surface physical properties of activated carbon on the adsorption of irreversible membrane pollutants.EEMPARAFAC model identified two kinds of humus fluorescent components C1 and C3, and a class of protein (tryptophan) fluorescence component C2, of which C2 is the main irreversible membrane pollutant.At the same time, all the activated carbon has good adsorption effect on the three kinds of fluorescence components, of which the main The removal rate of membrane pollutant C2 reached 54.0% -74.6% .Relationship analysis showed that the adsorption of activated carbon on the main membrane-contaminated C2 was affected by the micropore surface area of activated carbon, The adsorption results of C1 and C3 were affected by the surface area of macropores and the BET specific surface area of activated carbon.The results of the experiment can be activated carbon-ultrafiltration process Selection of activated carbon to provide technical guidance of the river.