Chen J M, Jiang L Y, Sha H L
College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
Environ Technol. 2006 Jul;27(7):759-66. doi: 10.1080/09593332708618687.
A pilot-scale biotrickling filter (BTF) packed with polyurethane (PU) foam was installed at one pharmaceutical factory in Zhejiang Province to study the removal of high-concentration H2S from water treatment plant. Experiments were performed at different empty bed residence times (EBRTs), H2S input load, ratio of liquid flow rate to gas inlet rate (L/G) and sulfate concentration in recirculating liquid to examine their effects on the performance of the BTF. The performance of this bioreactor was monitored continuously over a period of 56 days. After the start-up within 8 days, H2S removal efficiency remained between 90% and 100% with inlet concentration fluctuating from 238 to 590 mg m(-3). H2S removal efficiency was consistently greater than 90%, even at a short EBRT of 9 s and inlet H2S load higher than 187 g m(-3) h(-1). Profiles over the height of the reactor indicated that H2S removal took place mostly in the first section of the column. The performance of BTF could be maintained at high and stable levels when L/G was below 0.005 and sulfate concentration down to 28 g l(-1). The results led to the conclusion that BTF is the optimal choice for treating high-concentration H2S.
在浙江省的一家制药厂安装了一个中试规模的填充聚氨酯（PU）泡沫的生物滴滤塔（BTF），以研究从污水处理厂去除高浓度H2S的效果。在不同的空床停留时间（EBRT）、H2S输入负荷、液流率与气体入口率之比（L/G）以及循环液中的硫酸盐浓度条件下进行实验，以考察它们对BTF性能的影响。在56天的时间内持续监测该生物反应器的性能。在启动后的8天内，随着入口浓度在238至590 mg m(-3)之间波动，H2S去除效率保持在90%至100%之间。即使在9 s的短EBRT和高于187 g m(-3) h(-1)的入口H2S负荷下，H2S去除效率也始终大于90%。反应器高度上的分布情况表明，H2S去除主要发生在塔的第一部分。当L/G低于0.005且硫酸盐浓度降至28 g l(-1)时，BTF的性能可以维持在高且稳定的水平。结果得出结论，BTF是处理高浓度H2S的最佳选择。
