微生物反应器处理空气甲醛的影响因素分析  

Impact Factors Analysis of Removing Formaldehyde in Indoor Air by a Microorganisms Bioreactor

作　　者：齐枝花[1] 张晓虎[2,3] 张胜华[2] 

机构地区：[1]台州市环境科学设计研究院,浙江台州318000 [2]中国科学院城市环境研究所,福建厦门361021 [3]爱科利态(上海)环保技术有限公司,上海200336

出　　处：《环境科学与技术》2015年第5期109-113,138,共6页Environmental Science & Technology

基　　金：国际海域资源调查与开发"十二五"课题(DY125-15-T-06)

摘　　要：固定化微生物技术是解决室内空气中甲醛污染问题的重要途径之一。该文利用从印度洋海底沉积物中分离的甲醛降解菌Pseudomonas sp.IOFA1,采用固定化微生物吸附柱作为室内甲醛净化的核心单元,判断不同实验条件对甲醛降解效率的影响。结果表明,在相同的气体流速下,随着进气甲醛浓度的升高,净化器对甲醛的去除率和去除负荷均随之升高;在相同的进气甲醛浓度下,随着气体空床停留时间的增加,甲醛去除率有所提高,去除负荷则随停留时间的增长降低,当空床停留时间为5~6 s时,装置对甲醛的去除负荷最高;而循环液流量对净化装置去除甲醛影响较小。Microbial immobilization technology is one of important ways to solve formaldehyde pollution in indoor air. A Pseudomonas sp. IOFA1 isolated from sediment of the Indian Ocean is used as biocatalyst in an immobilized microorganisms bioreactor to identify the impacts under different experimental conditions on formaldehyde removal efficiency. Results show that at the same gas flow rate, high removal efficiency and elimination capacity are archived as the intake of formaldehyde concentration increases. At the .same intake of formaldehyde concentration, removal efficiency increases as empty bed residence time increases while elimination capacity is reduced. Satisfactory elimination capacity is achieved when the empty bed residence time is 5~6 s. Volume of circulating fluid has a smaller impact on removal efficiency of formaldehyde in this study.

关 键 词：微生物固定化 甲醛 室内空气 影响因素 

分 类 号：X707.1[环境科学与工程—环境工程]