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OALib Journal期刊
ISSN: 2333-9721
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膜生物反应器处理甲苯废气的挂膜实验
DOI: 10.3724/SP.J.1145.2011.00731, PP. 731-735
Keywords: 膜生物反应器,生物膜,甲苯废气,生物降解,挂膜
Abstract:
采用假单胞菌在硅橡胶复合膜生物反应器上进行甲苯废气降解的挂膜启动实验，研究膜生物反应器挂膜启动特性，对挂膜启动过程中循环液吸光度、压力损失、甲苯降解效率和生物膜干重的变化进行考察，并观察挂膜稳定后的生物膜形态.结果表明：挂膜过程主要由生物膜成膜期（0~5d）、生长期（6~10d）、稳定期（11~14d）3个阶段组成.循环液吸光度、反应器内液相压力损失、甲苯降解效率和生物膜干重等参数在成膜期都快速增加；进入膜生长期，循环液吸光度略微下降，而生物膜干重、压力损失和甲苯降解效率都继续增大；在稳定期各参数均趋于相对稳定，稳定后循环液吸光度维持在0.75左右，液相压力损失达到了180pa，甲苯降解效率维持在78%以上，生物膜干重为2.25mg/cm2.试验表明，对循环液吸光度、液相压力损失、甲苯降解效率和生物膜干重等参数的综合分析，可作为膜生物反应器挂膜启动进程的判据.图9参15
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