| HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响 |
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| 引用本文： | 张为堂,侯锋,刘青松,邵彦青,薛晓飞,彭永臻. HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响[J]. 化工学报, 2014, 65(4): 1436-1442. DOI: 10.3969/j.issn.0438-1157.2014.04.039 |
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| 作者姓名： | 张为堂 侯锋 刘青松 邵彦青 薛晓飞 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重点实验室, 北京 100124;2.北京北华清创环境科技有限公司, 北京 100124;3.北控水务（中国）投资有限公司, 北京 100124 |
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| 基金项目： | 北京市科技计划项目（D121100000112001）；北京市教委科技创新平台项目。 |
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| 摘 要： | 以COD/TN为4左右的生活污水为处理对象，通过调节系统进水流量和曝气生物滤池（BAF）曝气量，研究了水力停留时间（HRT）和BAF气水比对AAO-BAF反硝化除磷系统运行性能的影响。结果表明，气水比和水力负荷（HLR）对BAF的硝化性能有显著影响，BAF气水比为3：1时，NH4+去除率降低到了72%；当AAO的HRT为4 h，BAF的HLR为3 m3·m-2·h-1时，即使BAF的气水比达到8：1，也不能保证NH4+的完全去除。试验得出，AAO-BAF反硝化除磷系统的PO43-去除率与NH4+去除率存在良好的相关关系，为保证90%以上的磷去除率，NH4+去除率应该达到98%。当AAO的HRT≥6 h，BAF气水比≥4：1时，AAO-BAF系统对COD、NH4+、TN和PO43-的去除率分别可达87%、99%、80%和95%。
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| 关 键 词： | 反硝化除磷 生物技术 曝气 氧化 废水 |
| 收稿时间： | 2013-07-22 |
| 修稿时间： | 2013-09-10 |
Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal |
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| ZHANG Weitang,HOU Feng,LIU Qingsong,SHAO Yanqing,XUE Xiaofei,PENG Yongzhen. Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal[J]. Journal of Chemical Industry and Engineering(China), 2014, 65(4): 1436-1442. DOI: 10.3969/j.issn.0438-1157.2014.04.039 |
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| Authors: | ZHANG Weitang HOU Feng LIU Qingsong SHAO Yanqing XUE Xiaofei PENG Yongzhen |
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| Affiliation: | 1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;2.Beijing Beihuaqingchuang Environmental Science and Technology Co., Ltd., Beijing 100124, China;3.Beijing Enterprises Water Group(China) Investment Limited, Beijing 100124, China |
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| Abstract: | Integrated anaerobic/anoxic/oxic process with biological aerated filter, AAO-BAF system was used to treat domestic wastewater with low C/N ratio of about 4. By adjusting influent flow rate of the AAO reactor and aeration rate of BAF, the effect of hydraulic retention time (HRT) and aeration rate on the performance of the AAO-BAF system was investigated. The results showed that air/liquid ratio and hydraulic load rate (HLR) of BAF had great influence on NH4+ removal. At air/liquid ratio 3:1, NH4+ removal rate decreased to 72%. Further, when HRT = 4 h and HLR of BAF was 3 m3·m-2·h-1, NH4+ could not be removed completely even with a high air/liquid ratio of 8:1. This work confirmed that there was an obvious relationship between PO43- and NH4+ removal efficiencies in the AAO-BAF system. The NH4+ removal should reach 98% for over 90% of the PO43- removal. When HRT of the AAO reactor was greater than 6 h, and air/liquid ratio of BAF was greater than 4:1, the average removal efficiencies of COD, NH4+, TN and PO43- could reach 87%, 99%, 80% and 95% respectively. |
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| Keywords: | denitrifying phosphorous removal biotechnology aeration oxidation waste water |
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