Bio Engineering and Environmental Sciences group, Department of Energy and Environmental Engineering, CSIR - Indian Institute of Chemical Technology, Hyderabad, Telangana, India.
Department of Environmental studies, University of Delhi, New Delhi, India.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2021;56(6):625-634. doi: 10.1080/10934529.2021.1903283. Epub 2021 Mar 29.
Deodorization of gases emitted from Tanneries using eco-friendly and cost-effective approaches is necessary for the safe disposal of industrial emissions. There is limited research available on the treatment of odorous gases emitted from tanneries using bio-filter. In this endeavor, pilot-scale studies were performed in a 2.7 m bio-filter with synthetic gas mixture containing hydrogen sulfide (HS) and ammonia (NH) as input gas to study the impact of bedding material for the removal of HS and NH using bio-filter and identification of various design parameters for scale-up. The pilot-scale studies showed that the removal efficacy of both NH and HS was about 90-99% at an empty bed residence time of 55 seconds at an inlet concentration (NH and HS) of 200 to 210 ppmV and microbial count enhanced from 3.5 × 10 to 8.9 × 10 in 210 days. The microbial biodiversity analysis revealed the dominance of as as well as and . A full-scale bio-filter (13.75 m) was designed, installed, and commissioned in a tannery and observed that the removal efficiency of >99% since last three years.
使用环保且经济有效的方法对制革厂排放的气体进行除臭对于安全处理工业排放物是必要的。关于使用生物过滤器处理制革厂排放的恶臭气体的研究有限。在这项努力中，在一个 2.7 m 的生物过滤器中进行了中试规模研究，该生物过滤器使用含有硫化氢 (HS) 和氨 (NH) 的合成气体混合物作为输入气体，以研究床料对 HS 和 NH 去除的影响使用生物过滤器，并确定各种用于放大的设计参数。中试规模研究表明，在入口浓度（NH 和 HS）为 200 至 210 ppmV 时，空床停留时间为 55 秒，去除率约为 90-99%，微生物计数从 3.5×10 增加到 210 天内的 8.9×10。微生物多样性分析表明 和 占主导地位。一个全尺寸的生物过滤器（13.75 m）已在制革厂设计、安装和调试，并观察到自三年前以来去除效率>99%。
