Studies on bio-oxidation of coal mine gas by a biofilter
Studies on bio-oxidation of coal mine gas by a biofilter作者机构:Hangzhou Environmental Monitoring Center Station Hangzhou 310007 China College of Life Science Zhejiang University Hangzhou 310058 China
出 版 物:《Journal of Coal Science & Engineering(China)》 (煤炭学报(英文版))
年 卷 期:2010年第16卷第4期
页 面:367-374页
学科分类:0819[工学-矿业工程] 081903[工学-安全技术及工程] 08[工学] 0815[工学-水利工程]
主 题:biofilter bio-oxidation coal mine gas methane methanotroph
摘 要:A new biofilter technology was used to control the methane concentration in the coal mine. The results indicate that the biofilter achieves a steady methane removal capacity of 1 470 mg/(Loh) after 30 days start-up. More than 90% of the methane can be removed with an empty bed retention time (EBRT) of 5.6 min when the inlet concentration of methane (IMC) is lower than 70 mg/L (10%, V/V) and about 80% when IMC is at 105 mg/L (15%, V/V). The biofilter is still a reliable method to control methane concentration as an auxiliary means to boost coal mine production safety together with aggrandized ventilation and drainage technologies, even though the removal efficiency of methane is not very satisfactory with a high IMC (〉10%) or a short EBRT (〈3.8 min).