[Sludge performances and membrane pollution in aerobic granular sludge membrane bioreactor].
The aerobic granular sludge membrane bioreactor worked for 75 days. In this operation, the removal efficiencies for COD, NH4+ -N and TN were 91%-95%, 89.57%-100% and 48.25%-90.84%, respectively. The granular sludge appeared disintegration to some extent and the sludge settlement performances deteriorated. Sludge specific resistance from initial resistance of 1.085 x 10(13) m/kg rose to 2.712 x 10(13) m/kg at the end; extracellular polymeric substances maintained between 44.71 and 72.23 mg/g. Then, pollution characteristics of the membrane module were studied. It was found that membrane surface cake layer resistance and membrane pore plugging resistance were 5.32 x 10(11) m(-1) and 2.34 x 10(11) m(-1), accounted for the total resistance of 67.42% and 29.66%, respectively. Through the analysis of infrared spectrum for membrane fouling matters found that the main fouling matters were proteins and carbohydrate materials for membrane.
Wang
Cheng-duan
CD
School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China. wcd@swust.edu.cn
Huang
Guo-fu
GF
D000332:Aerobiosis; D019149:Bioreactors / Q000382:microbiology; D019544:Equipment Failure Analysis; D008567:Membranes, Artificial; D010316:Particle Size; D012722:Sewage / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*
D008567:Membranes, Artificial; D012722:Sewage