| 回流污泥预浓缩强化新型氧化沟系统生物除磷的研究(英文) |
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| 引用本文： | 刘巍,杨殿海,徐立,贾川,卢文建,BOSIRE Omosa Isaiah,沈昌明.回流污泥预浓缩强化新型氧化沟系统生物除磷的研究(英文)[J].中国化学工程学报,2012,20(4):747-753. |
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| 作者姓名： | 刘巍 杨殿海 徐立 贾川 卢文建 BOSIRE Omosa Isaiah 沈昌明 |
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| 作者单位： | 1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Sciences and Engineering, Tongji University, Shanghai 200092, China;2. UNEP-TONGJI Institute of Environment for Sustainable Development, College of Environmental Sciences and Engineering, Tongji University, 200092 Shanghai, China |
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| 基金项目： | Supported by the Major Science and Technology Program for Water Pollution Control and Treatment (2008ZX07316) |
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| 摘 要： | A pilot-scale,pre-anoxic-anaerobic oxidation ditch was used in this study to treat municipal wastewater with limited carbon source.A novel return activated sludge(RAS) pre-concentration tank was adopted for improv-ing the phosphorus removal efficiency and the effects of RAS pre-concentration ratio were studied.Under the opti-mal operational condition,the suspended total phosphorus(STP) and the total phosphorus(TP) removal efficiencies were around 58.9% and 63.9% respectively and the effluent-P was lower than 0.8 mg·L-1.The reason is that with the optimal RAS pre-concentration ratio,nitrate is completely removed with endogenous carbon source and the secondary phosphorus release is strictly restrained in the pre-anoxic tank.Therefore,the anaerobic phosphorus release and the carbon source uptake by phosphorus accumulation organisms(PAOs) in the sludge,which are ex-tremely important to the phosphorus removal process,can be fully satisfied.Furthermore,the oxidation-reduction potential is proved to be suitable for controlling the RAS pre-concentration ratio due to influent fluctuation and varied conditions.The novel modified system is also beneficial for PAO accumulation.
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| 关 键 词： | denitrifying phosphorus removal nitrate oxidation ditch phosphorus return activated sludge pre-concentration secondary phosphorus release |
| 收稿时间： | 2011-03-08 |
Effect of Return Sludge Pre-concentration on Biological Phosphorus Removal in a Novel Oxidation Ditch |
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| LIU Wei,YANG Dianhai,XU Li,JIA Chuan,LU Wenjian,BOSIRE Omosa Isaiah,and SHEN Changming.Effect of Return Sludge Pre-concentration on Biological Phosphorus Removal in a Novel Oxidation Ditch[J].Chinese Journal of Chemical Engineering,2012,20(4):747-753. |
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| Authors: | LIU Wei YANG Dianhai XU Li JIA Chuan LU Wenjian BOSIRE Omosa Isaiah and SHEN Changming |
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| Affiliation: | 1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Sciences and Engineering, Tongji University, Shanghai 200092, China;2. UNEP-TONGJI Institute of Environment for Sustainable Development, College of Environmental Sciences and Engineering, Tongji University, 200092 Shanghai, China |
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| Abstract: | A pilot-scale,pre-anoxic-anaerobic oxidation ditch was used in this study to treat municipal wastewater with limited carbon source.A novel return activated sludge(RAS) pre-concentration tank was adopted for improv-ing the phosphorus removal efficiency and the effects of RAS pre-concentration ratio were studied.Under the opti-mal operational condition,the suspended total phosphorus(STP) and the total phosphorus(TP) removal efficiencies were around 58.9% and 63.9% respectively and the effluent-P was lower than 0.8 mg·L-1.The reason is that with the optimal RAS pre-concentration ratio,nitrate is completely removed with endogenous carbon source and the secondary phosphorus release is strictly restrained in the pre-anoxic tank.Therefore,the anaerobic phosphorus release and the carbon source uptake by phosphorus accumulation organisms(PAOs) in the sludge,which are ex-tremely important to the phosphorus removal process,can be fully satisfied.Furthermore,the oxidation-reduction potential is proved to be suitable for controlling the RAS pre-concentration ratio due to influent fluctuation and varied conditions.The novel modified system is also beneficial for PAO accumulation. |
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| Keywords: | denitrifying phosphorus removal nitrate oxidation ditch phosphorus return activated sludge pre-concentration secondary phosphorus release |
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