Desulfurization performance of biotrickling filter on the removal of flue gas adsorbent produced by dual-alkali flue gas desulfurization process

Journal of Water Reuse and Desalination

Wang, Jianhua²  Wang, Li³  Xue, Niantao³  Zheng, Tianlong³  Wang, Qunhui⁴ 

[1] Research Incorporation Limited, 7 Jianan Street, Daxing District, Beijing 100176, China;Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;MCC Capital Engineering &

关键词: biotrickling filter;    desulfurization;    high temperature shock;    pH shock;    shutdown behavior shock;    sulfate-reducing bacteria;   

DOI  :  10.2166/wrd.2014.034

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

A biotrickling filter (BTF) was used to investigate the elimination of flue gas adsorbent containing sulfite, sulfate, and hydrosulfate; it was undertaken to replace the regeneration step of dual-alkali flue gas desulfurization. Sulfate-reducing bacteria (SRB) isolated from landfill leachate were inoculated, and overall desulfurization performance as well as impact resistance was evaluated. The results showed that an efficient SRB could reduce the start-up time to 1 h, which is one third of that required for initial condition, for a sulfite removal efficiency above 80%. Further, the sulfite removal efficiency rose to 98% in 3.9 h with the lower packing load of 5.56 kg SO32−-S/(m3d), and in 6.4 h for 6.37 kg SO32−-S/(m3d). In contrast, 85% removal efficiency in 5 h for sulfate and 98% removal efficiency in 0.5 h for hydrosulfite were obtained when the packing loads were 0.95 kg SO42−-S/(m3d) and 1.76 kg HSO3−-S/(m3 d), respectively. Moreover, the BTF could quickly restore after impact shock, such as, 0.5 h restoration time for initial pH which varied from 4.5 to 6.5, 6 d for 27 d shutdown behavior, and 4 d for 5 h high temperature shock of 85 °C. Therefore, the BTF system was an effective method for flue gas adsorbent treatment.

【 授权许可】

CC BY-NC-ND