Factors affecting filtration characteristics in membrane-coupled moving bed biofilm reactor

Water Research
Woo-Nyoung LeeChung-Hak Lee

Abstract

Factors affecting filtration characteristics in submerged hollow fiber membrane were investigated in membrane-coupled moving bed biofilm reactor (M-CMBBR). The trend of membrane biofouling in M-CMBBR was quite different from that in a conventional membrane bioreactor (MBR). The M-CMBBR showed much lower biofouling rate than a conventional MBR. Whereas the membrane biofouling in conventional MBR system is known to be dependent mostly on biochemical effects of mixed liquor (soluble COD, EPS, etc.), the extent of biofouling in M-CMBBR was largely dependent on the potential collision energy of biofilm carriers (media) moving freely and colliding with surfaces of submerged hollow fibers. The collisions between circulating media and hollow fiber membranes gave rise to frictional forces which mitigated the formation of biofilms on the outer surface of hollow fibers. Consequently, the membrane permeability was greatly enhanced. The potential collision energy of moving media was dependent on the media volume fraction as well as the air flow rate. The membrane permeability was found to be proportional to the relative potential collision energy of the biofilm carriers. The frictional effect on the morphology of biofilms formed on the surf...Continue Reading

References

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Citations

Jun 30, 2009·Bioresource Technology·Wenshan GuoCarolyn Gay Palmer
Feb 3, 2012·Environmental Science & Technology·Joshua D Shrout, Robert Nerenberg
Feb 26, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·G Cuevas-RodríguezA Bernal-Martínez
Aug 12, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Shamas TabraizKishor Acharya
Apr 27, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Reza ShokoohiMeisam Sedighi Hemmat
Feb 13, 2017·Environmental Science and Pollution Research International·Muhammad AslamJeonghwan Kim
Apr 8, 2010·Water Environment Research : a Research Publication of the Water Environment Federation·Jirachote Phattaranawik, TorOve Leiknes
Oct 1, 2019·Global Challenges·Heta KosonenRiku Vahala
Jan 6, 2011·Environmental Science & Technology·Jae-Hyuk KimChung-Hak Lee

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