Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
Chemosphere. 2020 Oct;256:127093. doi: 10.1016/j.chemosphere.2020.127093. Epub 2020 May 16.
Bio-trickling filters (BTFs) can be used for the treatment of hydrophobic VOC-contaminated air. To improve treatment performance, two novel polydimethylsiloxane (PDMS) packing media were produced and trialled in BTFs inoculated with Cladophialophora fungus. The BTF packed with PDMS/foam ceramic composite filler showed superior performance: rapid start-up within 3 days, rapid restart within 7 days after starvation for 1 month, a maximum toluene elimination capacity (EC) of 264.4 g m·h at an empty bed residence time of 10 s, and a pressure drop that was controllable by adjusting the nutrient supply regime. High-throughput sequencing was used to analyse the effect of spatial position on the microbial communities in the top and bottom filler layers. Meanwhile, by investigating the EC in the vertical direction of the BTF, spatial heterogeneity in the fungal degradation of a hydrophobic VOC was preliminarily explored.
生物滴滤塔（BTFs）可用于处理疏水性挥发性有机化合物（VOC）污染的空气。为了提高处理性能，制备了两种新型的聚二甲基硅氧烷（PDMS）填充介质，并在接种了拟青霉属真菌的 BTF 中进行了试验。填充 PDMS/泡沫陶瓷复合填料的 BTF 表现出优异的性能：在 3 天内快速启动，在饥饿 1 个月后 7 天内快速恢复，在空床停留时间为 10 秒时，甲苯去除容量（EC）达到 264.4 g m·h，并且压降可以通过调整营养供应制度来控制。高通量测序用于分析空间位置对顶层和底层填充层中微生物群落的影响。同时，通过考察 BTF 垂直方向上的 EC，初步探索了疏水性 VOC 真菌降解的空间异质性。
