膜污染
化学
超滤(肾)
结垢
流出物
膜
过滤(数学)
色谱法
粉末活性炭处理
胞外聚合物
活性污泥
化学工程
制浆造纸工业
活性炭
污水处理
环境工程
吸附
生物化学
环境科学
生物膜
细菌
有机化学
统计
数学
生物
工程类
遗传学
作者
An Ding,Heng Liang,Fangshu Qu,Langming Bai,Huu Hao Ngo,Wenshan Guo
标识
DOI:10.1016/j.biortech.2014.08.080
摘要
To mitigate membrane fouling of membrane-coupled anaerobic process, granular activated carbon (GAC: 50 g/L) was added into an expanded granular sludge bed (EGSB). A short-term ultrafiltration test was investigated for analyzing membrane fouling potential and underlying fouling mechanisms. The results showed that adding GAC into the EGSB not only improved the COD removal efficiency, but also alleviated membrane fouling efficiently because GAC could help to reduce soluble microbial products, polysaccharides and proteins by 26.8%, 27.8% and 24.7%, respectively, compared with the control system. Furthermore, excitation emission matrix (EEM) fluorescence spectroscopy analysis revealed that GAC addition mainly reduced tryptophan protein-like, aromatic protein-like and fulvic-like substances. In addition, the resistance distribution analysis demonstrated that adding GAC primarily decreased the cake layer resistance by 53.5%. The classic filtration mode analysis showed that cake filtration was the major fouling mechanism for membrane-coupled EGSB process regardless of the GAC addition.
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