Yang Hai-Yan, Wang Can, Yan Zhong-Sen, Li Dong-Ping, Zhao Yan, Qu Fang-Shu, Liang Heng, Xu Ye-Qin, Li Gui-Bai
Guangdong GDH Water Co., Ltd., Shenzhen 518021, China.
School of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue. 2017 Apr 8;38(4):1460-1466. doi: 10.13227/j.hjkx.201609013.
Foulants responsible for hydraulic irreversible fouling in Dongjiang River water were identified by ultrafiltration process and their removal by powdered activated carbon (PAC) adsorption treatment was investigated using fluorescent excitation emission matrix and parallel factor analysis (EEM-PARAFAC). A correlation analysis was then carried out for samples between the maximum fluorescence intensities () of three PARAFAC components after PAC adsorption and the surface properties of corresponding PAC samples. The results showed that two humic-like (C1 and C3) and one tryptophan-like fluorescent components were obtained through PARAFAC analysis, in which tryptophan-like component C2 was found to be the main substance in hydraulic irreversible foulants extracted from fouled membrane. Furthermore, the results of correlation analysis suggested that microspore area of PAC correlated with PAC adsorption of tryptophan-like fluorescent components, which played an important role in irreversible fouling. Both BET and mesopore+macropore area of PAC correlated with its adsorption of humic-like fluorescent components. The result provided support for selecting PAC in PAC-ultrafiltration hybrid process, which would be more effective for fouling control.
通过超滤过程确定了东江水中导致水力不可逆污染的污染物，并使用荧光激发发射矩阵和平行因子分析（EEM-PARAFAC）研究了粉末活性炭（PAC）吸附处理对其的去除效果。然后对PAC吸附后三个PARAFAC组分的最大荧光强度（）与相应PAC样品的表面性质之间的样品进行了相关性分析。结果表明，通过PARAFAC分析获得了两种类腐殖质（C1和C3）和一种类色氨酸荧光组分，其中类色氨酸组分C2是从污染膜中提取的水力不可逆污染物中的主要物质。此外，相关性分析结果表明，PAC的微孔面积与类色氨酸荧光组分的PAC吸附相关，这在不可逆污染中起重要作用。PAC的BET和中孔+大孔面积均与其对类腐殖质荧光组分的吸附相关。该结果为在PAC-超滤混合工艺中选择PAC提供了支持，这对污垢控制将更有效。
