| 多层生物滤塔去除废气中硫化氢 |
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| 引用本文： | 李顺义,张华新,王 岩,马红妍,李 伟.多层生物滤塔去除废气中硫化氢[J].农业工程学报,2010,26(6):287-291. |
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| 作者姓名： | 李顺义 张华新 王 岩 马红妍 李 伟 |
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| 作者单位： | 郑州大学化工与能源学院,郑州,450001 |
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| 基金项目： | 国家“十一五”科技支撑计划（2006BAD07A13-1-3） |
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| 摘 要： | 为了解决填料及单层滤塔中压降大、效率低的问题，以单层玉米芯生物滤塔为对照，研究了多层生物滤塔对低浓度H2S气体的净化效果，其适宜的工艺条件和生物降解宏观动力学。结果表明：填料分层填充可提高废气中H2S去除率，当进气浓度低于140 mg/m3时，H2S的去除率90%以上；H2S进气容积负荷、去除率与填料层填充厚度有一定的相关性，负荷低于42.2 g/(m3·d)，下层200 mm填料对H2S总去除率的贡献在95%以上；填料含水率为55%～70%，生物滤塔的微生物活性较高，净化效率高；试验条件下，采用Michaelis-Menten模型进行生物降解宏观动力学研究，其中半饱和常数为12.4 mg/m3，污染物最大去除速率为909 g/(m3·d)。试验表明：多层生物滤塔净化效果优于单层，其气流分布更均匀，停留时间延长，压降低，效率高；在适宜的工艺条件下运行3个月，对H2S净化效率均稳定在90%以上，为进一步研究及工程应用提供理论指导。
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| 关 键 词： | 生物滤塔，硫化氢，动力学，玉米芯 |
| 收稿时间： | 2009/10/24 0:00:00 |
| 修稿时间： | 5/1/2010 12:00:00 AM |
Treatment of odor gas containing hydrogen sulfide by multilayer biofilter |
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| Li Shunyi,Zhang Huaxin,Wang Yan,Ma Hongyan,Li Wei.Treatment of odor gas containing hydrogen sulfide by multilayer biofilter[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(6):287-291. |
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| Authors: | Li Shunyi Zhang Huaxin Wang Yan Ma Hongyan Li Wei |
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| Abstract: | In order to solve the problems of high pressure drop and low purifying efficiency existing in the single layer biofilter, using corncob as filler, in contrast to the single layer biofilter, multilayer biofilter used in treating H2S-contaminated gas streams was investigated. The suitable technological conditions and removal kinetics have been studied in this paper. The results showed that the multilayer biofilter had a higher removal rate of H2S than that of the single layer biofilter. The removal efficiency of H2S was more than 90% when the inlet hydrogen sulfide was lower than 140 mg/m3. When the inlet volumetric loading rate of H2S below 42.2 g/(m3·d), the bottom layer which was 200 mm thick removed more than 95% of the total removal rate. The biofilter worked well as the moisture content ranged from 55% to 70%. The removal kinetics were researched based on the Michaelis - Menten model, two kinetic parameters were Ksp with a value of 12.4 mg/m3 and Vm with a value of 909 g/(m3·d). So the multilayer biofilter was better than the single layer biofilter in treating H2S-contaminated gas streams. It was a kind of biofilter with longer residence time, low pressure drop, high purifying efficiency, and air movement distributed more uniformly. The removal efficiency of H2S was more than 90% during three months operation. The experiment provide some theoretical guidance for further research and engineering application. |
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| Keywords: | biofilters hydrogen sulfide kinetics corncob |
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