Hydrogen sulphide (H2S) is one of the most problematic contaminants in biogas. In this study, a biotrickling\udfilter with a working volume of 2.4 L and packed with polypropylene Pall rings was tested for its\udability to remove H2S from biogas under anoxic conditions. The influence of the H2S inlet concentration,\udnitrate feeding regime (manual and controlled) and liquid flow rate on the elimination capacity of the\udbiotrickling filter was studied. The results indicate that 99% of the H2S was removed for H2S inlet loads\udlower than 120 g S m"3 h"1 when using controlled nitrate feeding by ORP.
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机译：硫化氢（H2S）是沼气中最成问题的污染物之一。在这项研究中，测试了工作容积为2.4 L并装有聚丙烯颇尔环的生物滴滤/除尘器在缺氧条件下去除沼气中H2S的能力。研究了H2S入口浓度，\硝酸盐进料方式（手动和受控）和液体流速对\ t生物滴滤池消除能力的影响。结果表明，当使用ORP控制硝酸盐进料时，对于低于120 g S m“ 3 h” 1的H2S入口负荷，去除了99％的H2S。
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