TY - GEN
T1 - Behavior of trickle bed air biofilter for VOCs removal
T2 - 2004 AIChE Spring National Meeting, Conference Proceedings
AU - Kim, Daekeun
AU - Cai, Zhangli
AU - Sorial, George A.
PY - 2004
Y1 - 2004
N2 - Biofiltration has recently emerged as an attractive option for controlling volatile organic compounds (VOCs) emission. The objective of this work is to study the effect of non-use periods on biofilter performance. Two different non-use periods were investigated in order to mimic periods of repair of equipment or shutdown during weekend and holidays. In this research, trickle bed air biofilter (TBABs) with synthetic, inorganic media for microbial attachment was employed for VOC control from an air stream. VOC loading varied from 0.70 to 7.03 kg COD/m 3·day. Consistent long term efficient performance of biofilter strongly depended on biomas control. A periodic in-situ upflow washing (backwashing) was approached in this study. For 0.70, 1.41, and 3.52 kg COD/m 3·day, the biofilter provided the 99% VOC removal efficiency level by conducting backwashing at a rate of 1 hour per week. When the non-use period strategies were conducted, the overall VOC removal efficiency remained at the 99% range without backwashing for loading rates of 0.70 and 1.41 kg COD/m 3·day. While for a loading rate of 3.52 kg COD/m 3·day, it dropped occasionally below 90 % due to the accumulation of excess biomass. The non-use period can be considered as another means of biomass control for low VOC loadings (0.70 and 1.41 kg COD/m 3·day), however, at high VOC loading (>3.52 kg COD/m 3·day), backwashing deemed to be necessary. The biofilter response after restart-up following the non-use period was different as compared to the response after backwashing. The biofilter response after restart-up following the non-use period is a strong function of the active biomass in the system. In this paper, kinetics analysis is presented for comparing the reaction rates for each experimental strategy considered.
AB - Biofiltration has recently emerged as an attractive option for controlling volatile organic compounds (VOCs) emission. The objective of this work is to study the effect of non-use periods on biofilter performance. Two different non-use periods were investigated in order to mimic periods of repair of equipment or shutdown during weekend and holidays. In this research, trickle bed air biofilter (TBABs) with synthetic, inorganic media for microbial attachment was employed for VOC control from an air stream. VOC loading varied from 0.70 to 7.03 kg COD/m 3·day. Consistent long term efficient performance of biofilter strongly depended on biomas control. A periodic in-situ upflow washing (backwashing) was approached in this study. For 0.70, 1.41, and 3.52 kg COD/m 3·day, the biofilter provided the 99% VOC removal efficiency level by conducting backwashing at a rate of 1 hour per week. When the non-use period strategies were conducted, the overall VOC removal efficiency remained at the 99% range without backwashing for loading rates of 0.70 and 1.41 kg COD/m 3·day. While for a loading rate of 3.52 kg COD/m 3·day, it dropped occasionally below 90 % due to the accumulation of excess biomass. The non-use period can be considered as another means of biomass control for low VOC loadings (0.70 and 1.41 kg COD/m 3·day), however, at high VOC loading (>3.52 kg COD/m 3·day), backwashing deemed to be necessary. The biofilter response after restart-up following the non-use period was different as compared to the response after backwashing. The biofilter response after restart-up following the non-use period is a strong function of the active biomass in the system. In this paper, kinetics analysis is presented for comparing the reaction rates for each experimental strategy considered.
UR - http://www.scopus.com/inward/record.url?scp=4143103496&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:4143103496
SN - 0816909423
SN - 9780816909421
T3 - 2004 AIChE Spring National Meeting, Conference Proceedings
SP - 2432
EP - 2438
BT - 2004 AIChE Spring National Meeting, Conference Proceedings
Y2 - 25 April 2004 through 29 April 2004
ER -