Comparison of membrane fouling during short-term filtration of aerobic granular sludge and activated sludge.
Aerobic granular sludge was cultivated adopting internal-circulate sequencing batch airlift reactor. The contradistinctive experiment about short-term membrane fouling between aerobic granular sludge system and activated sludge system were investigated. The membrane foulants was also characterized by Fourier transform infrared (FTIR) spectroscopy technique. The results showed that the aerobic granular sludge had excellent denitrification ability; the removal efficiency of TN could reach 90%. The aerobic granular sludge could alleviate membrane fouling effectively. The steady membrane flux of aerobic granular sludge was twice as much as that of activated sludge system. In addition, it was found that the aerobic granular sludge could result in severe membrane pore-blocking, however, the activated sludge could cause severe cake fouling. The major components of the foulants were identified as comprising of proteins and polysaccharide materials.
Zhou
Jun
J
School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China. z_zhoujun@126.com
Yang
Feng-lin
FL
Meng
Fan-gang
FG
An
Peng
P
Wang
Di
D
D000332:Aerobiosis; D019149:Bioreactors; D005374:Filtration / Q000379:methods*; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors
D008567:Membranes, Artificial; D012722:Sewage