| 厌氧段HRT对A2N工艺反硝化除磷脱氮效果的影响 |
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| 引用本文： | 令云芳,王淑莹,王伟,王亚宜.厌氧段HRT对A2N工艺反硝化除磷脱氮效果的影响[J].水处理技术,2006,32(10):44-47. |
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| 作者姓名： | 令云芳 王淑莹 王伟 王亚宜 |
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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重点试验室,北京 100022
2. 北京工业大学北京市水质科学与水环境恢复重点试验室,北京 100022;浙江工业大学建筑工程学院,浙江 杭州 310014 |
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| 基金项目： | 国家自然科学基金;北京市属市管高校人才强教计划项目;北京市科委资助项目;北京市重点实验室基金 |
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| 摘 要： | 为了考察厌氧段水力停留时间（HRT）对A2N工艺反硝化除磷脱氮效果的影响，采用连续流双污泥反硝化除磷脱氮装置以生活污水为处理对象，研究了厌氧段在不同HRT时系统的除磷脱氮效果，以及厌氧段不同HRT对系统处理过程的影响。结果表明，厌氧段是A2N工艺实现反硝化除磷脱氮的关键阶段。当厌氧段的HRT过长时，虽然溶解性PO4^3-的总释放量增加，但是后续的缺氧吸磷量和总氮的去除量并没有相应地增加。厌氧段的HRT时间过短，反硝化聚磷菌（DPB）在此对进水中易降解COD（CODRB）吸收不完全，导致后续缺氧吸磷量下降，同时影响了系统的除磷和脱氮效果。在处理实际生活污水水质时，厌氧段的HRT为2h即可满足除磷和脱氮要求。
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| 关 键 词： | 水力停留时间(HRT) 厌氧段 易降解COD(CODRB) 反硝化除磷 |
| 文章编号： | 1000-3770（2006）10-0044-04 |
| 收稿时间： | 2005-09-14 |
| 修稿时间： | 2005-09-14 |
EFFECT OF ANAEROBIC HRT ON A2N DENITRIFYING PHOSPHOROUS REMOVAL PROCESS |
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| LING Yun-fang,WANG Shu-yin,WANG Wei,WANG Ya-yi.EFFECT OF ANAEROBIC HRT ON A2N DENITRIFYING PHOSPHOROUS REMOVAL PROCESS[J].Technology of Water Treatment,2006,32(10):44-47. |
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| Authors: | LING Yun-fang WANG Shu-yin WANG Wei WANG Ya-yi |
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| Affiliation: | 1. Key Laboratory of Beijingfor Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology ,Beijing 100022, China; 2. School of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China |
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| Abstract: | The effect of anaerobic HRT(hydraulic retention time) on A2N(anaerobic/anoxic/nitrification) denitrifying phosphorous removal process was investigated by applying a continuous flow,dual-sludge anaerobic/anoxic/nitrification process in practical domestic wastewater treatment.The results showed that anaerobic section is a key stage of A2N process to realize denitrification and phosphorous removal.At overlong anaerobic HRT,although the total amount of released dissolved phosphate(PO43-) increased,the phosphate uptake and the nitrogen removed by denitrifying during anoxic stage are not increase correspondingly.At shorter anaerobic HRT,denitrifying phosphorous bacteria(DPB) failed to completely absorb the readily biodegradable COD(CODRB) in the influent,leading to the decrease of anoxic phosphorous uptake and affecting the effect of nitrogen and phosphorus removal in the system.For practical domestic wastewater,anaerobic HRT of 2 hours can meet the requirements of both the nitrogen and phosphorous removal. |
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| Keywords: | hydraulic retention time(HRT) anaerobic stage readily biodegradable COD(CODRB) denitrifying phosphorous removal |
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