The membrane fouling characteristics of MBRs with different aerobic granular sludges at high flux
The membrane fouling characteristics of MBRs with different aerobic granular sludges at high flux
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不同好氧颗粒污泥MBR高通量膜污染特性
DOI：
10.1016/j.biortech.2013.03.066
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发表时间：
2013-05-01
影响因子：
11.4
通讯作者：
Zhu, Jianrong
中科院分区：
文献类型：
--
作者：
Wang, Yaqin;Zhong, Chen;Zhu, Jianrong
在高通量（20 L/（m2）h）条件下，研究了不同污泥的膜污染特性。好氧颗粒污泥良好的膜生物反应器运行时间最长，为61 d，TMP总体上升速度平稳，而膨胀、絮状和小颗粒污泥分别仅为10、14和19 d，说明好氧颗粒污泥良好、完整，大大延缓了膜污染。好氧颗粒污泥的主要污染因素是堵塞阻力76.21%，而絮凝污泥和膨胀污泥的主要污染因素是滤饼阻力61.23%和79.02%。颗粒膜生物反应器和絮状污泥膜生物反应器中膜污染物EPS组成的差异导致了膜污染行为的不同。好氧颗粒污泥在运行过程中相当稳定。这些结果表明，好氧颗粒膜生物反应器可以在高通量下运行，这是非常有价值的实际应用。(C)2013爱思唯尔有限公司保留所有权利。
This experimental work investigated the property of membrane fouling for different sludges at high flux 20 L/(m(2) h). The MBR with good aerobic granular sludge performed the longest operation time 61 days, and TMP rose up in a steady overall rate, while only 10, 14 and 19 days for bulking, flocculent and small granular sludge, respectively, which clearly demonstrated the good and complete aerobic granules greatly retarded the membrane fouling. The pore blocking resistance 76.21% was the key fouling factor for aerobic granules, but the cake resistance 61.23% or 79.02% was the main factor for flocculent or bulking sludge. The difference in EPS composition of membrane foulants between granules MBR and flocculent sludge MBR led to the different behaviour of fouling. Aerobic granules were quite stable during operation. These results suggested MBR with aerobic granules might be operated at high flux, which was very valuable for practical application. (C) 2013 Elsevier Ltd. All rights reserved.