A biofilter integrated with gas membrane separation unit for the treatment of fluctuating styrene loads.
A biofilter integrated with gas membrane separation unit for the treatment of fluctuating styrene loads.
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DOI：
10.1016/j.biortech.2012.02.025
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发表时间：
2012-05
影响因子：
11.4
通讯作者：
Lin Li;J. Lian;Yunping Han;Jun-xin Liu
中科院分区：
文献类型：
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作者：
Lin Li;J. Lian;Yunping Han;Jun-xin Liu
控制废气中挥发性有机化合物的生物过滤最好在稳定的污染物负荷下运行。为使生物滤池在不利的进水污染物条件下长期稳定运行，提出了一种在生物滤池后安装气体分离膜组件的集成生物反应器系统，用于处理苯乙烯。对苯乙烯进行了有效的处理，出水平均浓度维持在50mgm−3以下，当生物滤柱面临波动负荷时，总的去除效率可达96%以上。组合生物反应器系统的最大去除能力为93.8gm−3h−1，高于单独使用生物滤柱的去除能力。这两个过程(微生物和化学)的结合导致更有效地消除苯乙烯和缓冲波动的负荷。并对影响气膜分离的因素、一体化生物反应器中的微生物特性和膜污染进行了研究。
Biofiltration for volatile organic compound control in waste gas streams is best operated at steady contaminant loadings. To provide long-term stable operation of a biofilter under adverse contaminant feeding conditions, an integrated bioreactor system with a gas separation membrane module installed after a biofilter was proposed for styrene treatment. Styrene was treated effectively, with average styrene effluent concentrations maintained at less than 50mgm−3and a total removal efficiency of over 96% achieved when the biofiltration column faced fluctuating loads. The maximum elimination capacity of the integrated bioreactor system was 93.8gm−3h−1, which was higher than that obtained with the biofiltration column alone. The combination of these two processes (microbial and chemical) led to more efficient elimination of styrene and buffering of the fluctuating loads. The factors on gas membrane separation, microbial characteristics in the integrated bioreactor and membrane fouling were also investigated in this study.