| CAST工艺处理低C/N生活污水的强化脱氮性能 |
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| 引用本文： | 马娟,彭永臻,王淑莹,王丽,王少坡. CAST工艺处理低C/N生活污水的强化脱氮性能[J]. 环境工程学报, 2009, 3(2): 234-238 |
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| 作者姓名： | 马娟 彭永臻 王淑莹 王丽 王少坡 |
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| 作者单位： | 北京工业大学北京市水质科学与水环境恢复重点实验室,北京,100022;兰州交通大学环境与市政工程学院,兰州,730070;北京工业大学北京市水质科学与水环境恢复重点实验室,北京,100022;北京工业大学北京市水质科学与水环境恢复重点实验室,北京,100022;天津城市建设学院环境与市政工程系,天津,300384 |
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| 基金项目： | “十一五”国家科技支撑计划重点项目（2006BAC19B03）；新加坡环境与水工业发展协会项目(EDBS07/1-53974082)；北京工业大学第六届研究生科技基金资助项目（ykj-2007-1497）；北京市重点实验室开放研究课题 |
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| 摘 要： | 研究了不同运行条件对CAST工艺处理低C/N实际生活污水脱氮性能的影响，并对pH值和ORP的变化规律进行了分析。结果表明，传统4 h运行模式下，提高原水C/N比，TN去除效果并无显著提高；对于低C/N生活污水，降低充水比有利于提高出水TN去除率，然而，充水比降至16%时，系统因低负荷运行发生污泥膨胀。在不投加外碳源的情况下，采用分段进水交替A/O运行模式可大幅改善系统脱氮性能，且TN去除率随着交替次数的增多而提高，交替4次平均去除率达87.23%。系统采用实时控制方式运行时，可根据有机物降解、氨氧化及反硝化时pH值和ORP曲线上是否出现拐点，来判断反应系统的曝气以及搅拌时间是否过长、适当或不足。
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| 关 键 词： | 生物脱氮 生活污水 CAST |
Enhancing nitrogen removal performance of CAST for low ratio of C/N municipal wastewater treatment |
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| Ma Juan,Peng Yongzhen,Wang Shuying,Wang Li and Wang Shaopo. Enhancing nitrogen removal performance of CAST for low ratio of C/N municipal wastewater treatment[J]. Techniques and Equipment for Environmental Pollution Control, 2009, 3(2): 234-238 |
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| Authors: | Ma Juan Peng Yongzhen Wang Shuying Wang Li Wang Shaopo |
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| Affiliation: | 1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022; 2. Institute of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070,1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022,1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022,1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022 and 1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022; 3. Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction, Tianjin |
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| Abstract: | The nitrogen removal performance of CAST treating low C/N wastewater under different operation conditions was investigated and the profiles of pH and ORP were analyzed.The results showed that TN removal rate couldn't be improved by increasing the C/N ratio of wastewater when the system operated in traditional mold.Decreasing the filling ratio of wastewater was helpful for increasing TN removal rate,while sludge bulking and nitrate accumulation happened because of the operation under long-term condition of l... |
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| Keywords: | CAST |
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