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OALib Journal期刊
ISSN: 2333-9721
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高效甲醛降解菌处理突发污染事故研究
DOI: 10.3724/SP.J.1145.2011.00114, PP. 114-117
Keywords: 甲醛废水,突发污染事故,bacilluscereus,甲醛降解菌,应急处理
Abstract:
通过选择培养，选育到1株能快速降解高浓度甲醛的菌株bz-001h，经鉴定为bacilluscereus，其最适降解条件是30℃和ph7.0，最适浓度为8000mgl-1，最佳接种量为0.3‰，甲醛浓度越高时对ph的变化越敏感.用bz-001h作为功能菌株对活性污泥系统强化后应急处理含2035.67mgl-1、4155.63mgl-1、8099.27mgl-1浓度甲醛的模拟废液,2.5h、6h、14h后去除率都能达到99%以上.模拟甲醛突发污染事故场景与应用条件，用bz-001h强化常规sbr工艺应急处理4073.65mgl-1甲醛废液，经过8h降解，可使出水甲醛达到《污水综合排放标准》（gb8978-1996）一级标准.同时，考察了应急处理过程对应急系统和常规系统的影响，结果表明，应急处理结束后，应急sbr系统运行2周期后cod达标排放，6周期后氨氮达标排放；而对照系统受冲击明显，运行10周期后氨氮仍未达标，去处率仅为18.81%.图6参17
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