Biodegradation of nitrobenzene by aerobic granular sludge in a sequencing batch reactor (SBR)
Biodegradation of nitrobenzene by aerobic granular sludge in a sequencing batch reactor (SBR)
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DOI：
10.1016/j.desal.2011.07.037
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发表时间：
2011-10
期刊：
影响因子：
9.9
通讯作者：
Dongfeng Zhao;Chunshuang Liu;Yunbo Zhang;Qiyou Liu
中科院分区：
文献类型：
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作者：
Dongfeng Zhao;Chunshuang Liu;Yunbo Zhang;Qiyou Liu
研究了好氧颗粒污泥对硝基苯的生物降解作用。在SBR反应器中培养的好氧颗粒污泥经过增流培养后，可以将硝基苯作为唯一的碳源和氮源进行降解，而硝基苯浓度在600 mg/L以下不受其抑制。曝气时间对硝基苯的去除有显著的影响，尤其是在15h以下。最高硝基苯负荷量为0.33 kg/(M3d)，达到了完全去除。进料时间和冲击负荷对硝基苯的去除影响不大。绿微球菌、芽孢杆菌、假单胞菌、单胞菌、不动杆菌。和红球菌属(Rhodorics sp.)是颗粒污泥中主要的硝基苯降解菌。颗粒污泥SBR工艺是一种高效、可靠、稳定的处理硝基苯的工艺。这些结果可为硝基苯废水的处理提供指导。
The biodegradation of nitrobenzene by aerobic granular was investigated in this study. After cultivation in feeding-increasing form, nitrobenzene was degraded as sole carbon and nitrogen resource by aerobic granular sludge cultivated in SBR reactor and was not inhibited by nitrobenzene concentration up to 600mg/L. Aeration time has a significant effect on nitrobenzene removal, especially at lower than 15h. The highest nitrobenzene loading was 0.33kg/(m3d) attained complete removal. Feeding time and shock loading had little effect on nitrobenzene removal. Micrococcus luteus, Bacillus sp., Pseudomonas sp., Comamonas sp., Acinetobacter sp. and Rhodococcus sp. are the main nitrobenzene degrading bacteria in the granular sludge. SBR with granular sludge was an efficient, reliable and stable process for nitrobenzene treatment. These results may provide a guideline for nitrobenzene wastewater treatment.