Performance of biotrickling filters packed with structured or cubic polyurethane sponges for VOC removal

作     者：Chunping Yang Guanlong Yu Guangming Zeng Haining Yang Fayuan Chen Congying Jin 

作者机构：College of Environmental Science and Engineering Hunan University Hunan 410082 China. College of Environmental Science and Engneering Zhejiang Gongshang University Hangzhou 310012 China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Hunan 410082 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2011年第23卷第8期

页      面：1325-1333页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China (No. 50778066) the National Science and Technology Support Program of China (No. 2006BAJ04A13) the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20090161110010) 

主　　题：biofiltration biotrickling filter elimination capacity empty bed contact time sponge volatile organic compound 

摘      要：Two identical bench-scale biotrickling filters （BTFs）, BTF 1 and BTF 2, were evaluated for toluene removal at various gas empty bed contact times （EBCTs） and organic loadings. BTF 1 and BTF 2 were packed with structured and cubic synthetic polyurethane sponges, respectively. At a constant toluene loading of 16 g/（***）, toluene removal efficiencies decreased from 98.8% to 64.3% for BTF 1 and from 98.4% to 74.1% for BTF 2 as gas EBCT decreased from 30 to 5 sec. When the toluene loading increased from 35 to 140 g/（***） at a gas EBCT of 30 sec, the removal efficiencies decreased from 99.1% to 77.4% for BTF 1 and from 99.0% to 81.5% for BTF 2. The pressure drop for both BTFs increased with increased air flow rate, and did not significantly vary while the toluene loading was increased under similar operation conditions. BTF 1 and BTF 2 could start up successfully within 19 and 27 days, respectively, when packed with fresh sponge media, and the performances could be restored in 3-7 days after biomass was removed and wasted from the media. BTF 2 displayed higher removal efficiency even under shorter EBCT or higher loading rate than BTF1 when other operation conditions were similar, while it showed lower pressure drop than BTF 1 during the whole period of operation. These results demonstrated that both BTFs could treat waste gas containing toluene effectively.