Performance of a pilot-scale submerged membrane bioreactor (MBR) in treating bathing wastewater.
Bathing wastewater was treated by a pilot-scale submerged membrane bioreactor (MBR) for more than 60 days. The results showed that the removal rates of main pollutants of wastewater such as COD(Cr), LAS, NH(4)(+)-N and total nitrogen (TN) were above 93%, 99%, 99%, and 90%, respectively. The results of denaturing gel gradient electrophoresis (DGGE) and fluorescent in situ hybridization (FISH) indicated that the bacteria were stable. The abundant nitrobacteria intercepted by the membrane led to the high removal rate of ammonia and TN. FISH and 16S rDNA gene sequence analysis revealed that some specific phylogenetic group of bacteria, the Pseudomonas sp. Ochrobactrum anthropi sp. and Enterobacter sp. probably played a major role in the development of the mature biofilms, which led to the severe irreversible membrane biofouling.
Xia
Siqing
S
State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. gjf01398@gmail.com
Guo
Jifeng
J
Wang
Rongchang
R
D001483:Base Sequence; D001494:Baths; D019149:Bioreactors; D015342:DNA Probes; D004275:DNA, Ribosomal / Q000235:genetics; D017404:In Situ Hybridization, Fluorescence; D008567:Membranes, Artificial; D009584:Nitrogen / Q000302:isolation & purification; D010865:Pilot Projects; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014871:Water Microbiology
D015342:DNA Probes; D004275:DNA, Ribosomal; D008567:Membranes, Artificial; D012336:RNA, Ribosomal, 16S; D009584:Nitrogen