| 聚磷菌在不同碳源下的反硝化研究 |
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| 引用本文： | 李夕耀,王淑莹,郭春艳,马勇,袁志国,彭永臻.聚磷菌在不同碳源下的反硝化研究[J].环境科学,2009,30(10):2958-2962. |
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| 作者姓名： | 李夕耀 王淑莹 郭春艳 马勇 袁志国 彭永臻 |
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| 作者单位： | 1. 北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京,100124
2. Advanced,Wastewater,Management,Centre,The,University,of,Queensland,Brisbane,4072,Australia |
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| 基金项目： | 国家自然科学基金项目(50808004,50628808);;“十一五”国家重大科技专项课题(2008ZX07317-007-105);;北京高校人才强教计划高层次人才资助项目(PHR20090502) |
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| 摘 要： | 利用SBR系统对聚磷菌进行了培养,并通过荧光原位杂交手段检测了系统中聚磷菌Candidatus Accumulibacter phosphatis的富集程度.聚磷菌也是一种普通异养菌,为了研究它的反硝化能力,排除了聚磷菌的正常释磷和吸磷过程,仅考察在不同碳源下反硝化性能.结果表明,乙酸和PHB都能成为聚磷菌反硝化的电子供体.当以乙酸为外在单一碳源时,其反硝化速率和PHB生成速率与起始硝酸盐浓度无关,但是当起始状态硝酸盐浓度越高时,消耗单位乙酸生成的PHB和硝酸盐还原量越小.以PHB为内在碳源和能源时,聚磷菌的反硝化速率呈现对于基质(硝酸盐)的零级动力学反应,比反硝化速率为0.973 3mg/(g.h),此外PHB平均比消耗速率为(以PHB计)2.462 6 mg/(g.h).
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| 关 键 词： | 强化生物除磷 聚磷菌 反硝化 电子供体 |
| 收稿时间： | 2008/11/8 0:00:00 |
| 修稿时间： | 2009/2/25 0:00:00 |
Capacity of Denitrification by Polyphosphate Accumulating Organism at Different Electron Donors |
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| LI Xi-yao,WANG Shu-ying,GUO Chun-yan,MA Yong,YUAN Zhi-guo,PENG Yong-zhen.Capacity of Denitrification by Polyphosphate Accumulating Organism at Different Electron Donors[J].Chinese Journal of Environmental Science,2009,30(10):2958-2962. |
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| Authors: | LI Xi-yao WANG Shu-ying GUO Chun-yan MA Yong YUAN Zhi-guo PENG Yong-zhen |
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| Institution: | 1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering;Beijing University of Technology;Beijing 100124;China;2.Advanced Wastewater Management Centre;The University of Queensland;Brisbane 4072;Australia |
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| Abstract: | SBR reactor was performed to incubate polyphosphate accumulating organism(PAO),and it was checked out of the system by fluorescence in situ hybridization.As PAO is a kind of ordinary heterotrophic bacteria,it was excluded the ability of phosphate release and uptake and it was considered only the capacity of denitrification of the target biomass.The results indicated that acetate and PHB can be the electron donors of PAO to denitrify.When fed with acetate,the denitrifying rate and PHB producing rate were ind... |
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| Keywords: | enhanced biological phosphorus removal polyphosphate accumulating organism (PAO) denitfification electron donor |
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