[Effects of F/M on the uptake, storage and utilization of carbonhydrate in ASBR].
Substrate utilization in a glucose-fed anaerobic sequencing batch reactor (ASBR) under different F/M ratios was investigated. Glucose added was quickly taken up by fermentation bacterial in anaerobic digestion, then partly degraded directly to volatile fatty acid (VFA, accounted for 34%-38% of COD-fed) and partly accumulated transiently in the cell as glycogen (accounted for 41%-46% of COD-fed) and degraded to VFA in the following. The bacterial accumulation capacities increased with F/M. The maximum specific storage capacities could reach as high as 116.8, 81.1 and 62.4 mg/g as F/M (COD/VSS) was controlled in 0.27, 0.20 and 0.14 respectively. VFA production rate slowed down due to glucose storage, which resulted in low VFA accumulation and guaranteed a stable operation in ASBR under high loading rate.
Peng
Dang-Cong
DC
Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Ding
Qing-Xiao
QX
Shao
Xiang-Wen
XW
Xue
Xu-Dong
XD
D001421:Bacteria, Anaerobic / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
D005232:Fatty Acids, Volatile; D005947:Glucose