Abstract A pilot-scale bio-trickling filter (BTF) packed with ceramsite was investigated to treat butan-2-yl ethanoate (BE), which is discharged from the pharmaceutical industry. To choose an appropriate operation technology, the performance of twin bench-scale BTFs, vertical (BTF1) and horizontal (BTF2) towers, to purify BE were tested. The BTF1 had superior degradation capabilities when compared to BTF2, a quick start up of three days, a maximum elimination capacity of 548.5 g/(m3h) and an average removal efficiency of approximately 95% with an empty bed residence time (EBRT) of 17 s. Therefore, in a subsequent pilot test, a vertical BTF with a high-temperature shade net was setup, which demonstrated effective BE degradation performance. The pressure drop of the vertical BTFs could be addressed effectively by commutation and optimizing the nutrient supply. A high-throughput sequencing comparison of the three towers indicated similarity in the microorganisms between the two vertical BTFs, indicating that the flow patterns within the tower could affect microorganisms cultivation.

中文翻译：

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生物滴滤器处理乙酸丁酯的压降溶液及中试应用研究

摘要 研究了一种中试规模的陶粒生物滴滤器（BTF）处理制药工业排放的乙酸丁酯（BE）。为了选择合适的操作技术，测试了双台规模 BTF，立式 (BTF1) 和卧式 (BTF2) 塔净化 BE 的性能。与 BTF2 相比，BTF1 具有优异的降解能力、三天的快速启动、548.5 g/(m3h) 的最大去除能力和大约 95% 的平均去除效率，空床停留时间 (EBRT) 为 17 s。因此，在随后的试点测试中，设置了带有高温遮阳网的垂直 BTF，证明了有效的 BE 降解性能。垂直 BTF 的压降可以通过换向和优化养分供应来有效解决。三个塔的高通量测序比较表明两个垂直 BTF 之间微生物的相似性，表明塔内的流动模式会影响微生物的培养。