生物滴滤塔净化苯乙烯废气的强化启动及工艺性能

Enhanced start-up and performance of biotrickling filter for purification of styrene

采用多面空心球与活性炭纤维组合填料构建生物滴滤塔（BTF）,接种活性污泥净化苯乙烯废气。采用外加葡萄糖共代谢基质,气液相联合挂膜法启动生物滴滤塔,考察BTF启动及稳定阶段的工艺性能。结果表明,BTF的挂膜时间仅为20 d,实现了BTF的快速启动;适宜的苯乙烯进气浓度为195.2～1 478.2 mg/m3,停留时间（EBRT）为57 s,气液比为300∶1,系统最大去除负荷可达136.4 g/（m3·h）;BTF对喷淋液p H的大幅变化及间歇运行有较强的适应性。

Biotrickling filter（ BTF）,which has been constructed with multi-surface hollow ball and activated carbon fiber,was employed to evaluate styrene treatment performance,and was inoculated with activated sludge. The BTF was started up with co-metabolism substrate of glucose by using the combination of gas and liquid. It was found that the system well functionalized after 20 days of incubation. The maximum styrene removal of136. 4 g /（ m3·h） was achieved with the following treatment performance： 195. 2—1 478. 2 mg /m3 for inlet styrene,57 s for EBRT,and 300∶ 1 for the ratio of gas to liquid. Further study revealed that the system had the ability to steer the fluctuation of p H and intermittent operation.