caa a22 4500 605506450 CHVBK 20210128100627.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00253-015-6383-x doi (NATIONALLICENCE)springer-10.1007/s00253-015-6383-x Impacts of sludge retention time on sludge characteristics and membrane fouling in a submerged anaerobic-oxic membrane bioreactor [Elektronische Daten] [Xiaomei Zhang, Xiuping Yue, Zhiqiang Liu, Qingqing Li, Xiufu Hua] Anaerobic-oxic membrane bioreactor (AOMBR) has been proposed as a highly effective method in municipal and industrial wastewater treatment. In this study, according to the sewage treatment system in a campus, long-term experiments were conducted to assess the impacts of the sludge retention time (SRT) on sludge characteristics and membrane fouling, and the sludge parameters include biomass concentration, particle size distribution, extracellular polymeric substances (EPS), soluble microbial products (SMPs), and specific resistance to filtration (SRF). Our results clearly demonstrated that SRT was one of the most important factors influencing sludge characteristics, and different sludge characteristics resulted in different membrane fouling degrees. A better treatment and filtration performances were observed at the SRT of 30days compared to two SRTs of 10 and 90days. Among these parameters, SMP had the most significant correlation with the membrane fouling rate (dTMP/dt), and it had a negative impact on membrane filtration performance. The impact of SRT on membrane fouling process was discussed further by filtration models. At 10days SRT, the complete-standard blocking model curve had a comparatively higher goodness-of-fit with the fouling process, and at 30 and 90days SRT, the cake-standard blocking model curve had a relatively higher goodness-of-fit with respective fouling process. Springer-Verlag Berlin Heidelberg, 2015 Anaerobic-oxic membrane bioreactor nationallicence Sewage treatment nationallicence Sludge retention time nationallicence Membrane fouling nationallicence Filtration models nationallicence Zhang Xiaomei Environmental Science and Engineering Institute, Taiyuan University of Technology, 030024, Taiyuan, China aut Yue Xiuping Environmental Science and Engineering Institute, Taiyuan University of Technology, 030024, Taiyuan, China aut Liu Zhiqiang Environmental and Municipal Engineering Institute, Qingdao Technological University, 266033, Qingdao, China aut Li Qingqing Environmental and Municipal Engineering Institute, Qingdao Technological University, 266033, Qingdao, China aut Hua Xiufu Department of Scientific Research and Development, Tsinghua University, 100084, Beijing, China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/11(2015-06-01), 4893-4903 0175-7598 99:11<4893 2015 99 253 https://doi.org/10.1007/s00253-015-6383-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-015-6383-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Xiaomei Environmental Science and Engineering Institute, Taiyuan University of Technology, 030024, Taiyuan, China aut NATIONALLICENCE 700 1- Yue Xiuping Environmental Science and Engineering Institute, Taiyuan University of Technology, 030024, Taiyuan, China aut NATIONALLICENCE 700 1- Liu Zhiqiang Environmental and Municipal Engineering Institute, Qingdao Technological University, 266033, Qingdao, China aut NATIONALLICENCE 700 1- Li Qingqing Environmental and Municipal Engineering Institute, Qingdao Technological University, 266033, Qingdao, China aut NATIONALLICENCE 700 1- Hua Xiufu Department of Scientific Research and Development, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/11(2015-06-01), 4893-4903 0175-7598 99:11<4893 2015 99 253