PDF(Pubmed)
Abstract：
UNASSIGNED: Conventional biofilters, which rely on bacterial activity, face challenges in eliminating hydrophobic compounds, such as aromatic compounds. This is due to the low solubility of these compounds in water, which makes them difficult to absorb by bacterial biofilms. Furthermore, biofilter operational stability is often hampered by acidification and drying out of the filter bed.
UNASSIGNED: Two bioreactors, a bacterial biofilter (B-BF) and a fungal-bacterial coupled biofilter (F&B-BF) were inoculated with activated sludge from the secondary sedimentation tank of the Sinopec Yangzi Petrochemical Company wastewater treatment plant located in Nanjing, China. For approximately 6 months of operation, a F&B-BF was more effective than a B-BF in eliminating a gas-phase mixture containing benzene, toluene, ethylbenzene, and para-xylene (BTEp-X).
UNASSIGNED: After operating for four months, the F&B-BF showed higher removal efficiencies for toluene (T), ethylbenzene (E), benzene (B), and para-X (p-Xylene), at 96.9%, 92.6%, 83.9%, and 83.8%, respectively, compared to those of the B-BF (90.1%, 78.7%, 64.8%, and 59.3%). The degradation activity order for B-BF and F&B-BF was T > E > B > p-X. Similarly, the rates of mineralization for BTEp-X in the F&B-BF were 74.9%, 66.5%, 55.3%, and 45.1%, respectively, which were higher than those in the B-BF (56.5%, 50.8%, 43.8%, and 30.5%). Additionally, the F&B-BF (2 days) exhibited faster recovery rates than the B-BF (5 days).
UNASSIGNED: It was found that a starvation protocol was beneficial for the stable operation of both the B-BF and F&B-BF. Community structure analysis showed that the bacterial genus Pseudomonas and the fungal genus Phialophora were both important in the degradation of BTEp-X. The fungal-bacterial consortia can enhance the biofiltration removal of BTEp-X vapors.
UNASSIGNED: Two bioreactors, a bacterial biofilter (B-BF) and a fungal-bacterial coupled biofilter (F&B-BF) were inoculated with activated sludge from the secondary sedimentation tank of the Sinopec Yangzi Petrochemical Company wastewater treatment plant located in Nanjing, China. For approximately 6 months of operation, a F&B-BF was more effective than a B-BF in eliminating a gas-phase mixture containing benzene, toluene, ethylbenzene, and para-xylene (BTEp-X).
UNASSIGNED: After operating for four months, the F&B-BF showed higher removal efficiencies for toluene (T), ethylbenzene (E), benzene (B), and para-X (p-Xylene), at 96.9%, 92.6%, 83.9%, and 83.8%, respectively, compared to those of the B-BF (90.1%, 78.7%, 64.8%, and 59.3%). The degradation activity order for B-BF and F&B-BF was T > E > B > p-X. Similarly, the rates of mineralization for BTEp-X in the F&B-BF were 74.9%, 66.5%, 55.3%, and 45.1%, respectively, which were higher than those in the B-BF (56.5%, 50.8%, 43.8%, and 30.5%). Additionally, the F&B-BF (2 days) exhibited faster recovery rates than the B-BF (5 days).
UNASSIGNED: It was found that a starvation protocol was beneficial for the stable operation of both the B-BF and F&B-BF. Community structure analysis showed that the bacterial genus Pseudomonas and the fungal genus Phialophora were both important in the degradation of BTEp-X. The fungal-bacterial consortia can enhance the biofiltration removal of BTEp-X vapors.
摘要：
■常规生物过滤器，依赖于细菌活动，在消除疏水化合物方面面临挑战，如芳香化合物。这是由于这些化合物在水中的溶解度低，这使得它们难以被细菌生物膜吸收。此外，生物滤池的操作稳定性通常受到过滤床酸化和干燥的阻碍。
■两个生物反应器，用位于南京的中国石化扬子石化公司污水处理厂二级沉淀池的活性污泥接种细菌生物滤池(B-BF)和真菌-细菌耦合生物滤池(F&B-BF),中国。在大约6个月的运行中，在消除含有苯的气相混合物方面，F&B-BF比B-BF更有效，甲苯,乙苯,和对二甲苯(BTEp-X)。
■运行四个月后，F&B-BF对甲苯(T)的去除效率更高，乙苯(E)，苯（B），和对-X（对二甲苯），96.9%，92.6%,83.9%,和83.8%，分别,与B-BF(90.1%，78.7%,64.8%,和59.3%）。B-BF和F&B-BF的降解活性顺序为T>E>B>p-X。同样，F&B-BF中BTEp-X的矿化率为74.9%，66.5%,55.3%,和45.1%，分别,高于B-BF(56.5%，50.8%,43.8%,和30.5%）。此外,F&B-BF(2天)比B-BF(5天)显示更快的恢复速率。
■发现饥饿方案对于B-BF和F&B-BF的稳定运行都是有益的。群落结构分析表明，细菌假单胞菌属和真菌属Phialophora均在BTEp-X的降解中起重要作用。真菌-细菌聚生体可以增强BTEp-X蒸气的生物过滤去除。
■两个生物反应器，用位于南京的中国石化扬子石化公司污水处理厂二级沉淀池的活性污泥接种细菌生物滤池(B-BF)和真菌-细菌耦合生物滤池(F&B-BF),中国。在大约6个月的运行中，在消除含有苯的气相混合物方面，F&B-BF比B-BF更有效，甲苯,乙苯,和对二甲苯(BTEp-X)。
■运行四个月后，F&B-BF对甲苯(T)的去除效率更高，乙苯(E)，苯（B），和对-X（对二甲苯），96.9%，92.6%,83.9%,和83.8%，分别,与B-BF(90.1%，78.7%,64.8%,和59.3%）。B-BF和F&B-BF的降解活性顺序为T>E>B>p-X。同样，F&B-BF中BTEp-X的矿化率为74.9%，66.5%,55.3%,和45.1%，分别,高于B-BF(56.5%，50.8%,43.8%,和30.5%）。此外,F&B-BF(2天)比B-BF(5天)显示更快的恢复速率。
■发现饥饿方案对于B-BF和F&B-BF的稳定运行都是有益的。群落结构分析表明，细菌假单胞菌属和真菌属Phialophora均在BTEp-X的降解中起重要作用。真菌-细菌聚生体可以增强BTEp-X蒸气的生物过滤去除。
