| 强化A2/O工艺反硝化除磷性能的运行控制策略 |
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| 引用本文： | 王晓莲,王淑莹,王亚宜,彭永臻.强化A2/O工艺反硝化除磷性能的运行控制策略[J].环境科学学报,2006,26(5):722-727. |
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| 作者姓名： | 王晓莲 王淑莹 王亚宜 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,北京,100022
2. 浙江工业大学建筑工程学院,杭州,310014 |
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| 基金项目： | 国家自然科学基金-国际(地区)重大合作项目
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中国科学院资助项目
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北京市重点实验室基金 |
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| 摘 要： | 以啤酒废水为研究对象,重点考察了如何强化A2/O工艺反硝化除磷性能,从而提高营养物去除效果、并实现节能的目的.试验中建立了3种运行控制策略:(1)根据缺氧区末端出水硝酸盐的浓度控制内循环回流量;(2)调节厌氧/缺氧/好氧区体积比以减少厌氧区出水剩余COD对缺氧磷吸收的影响;(3)向缺氧区引入旁流并调节旁流比.试验结果表明,当缺氧区末端出水硝酸盐浓度控制在1～3 mg·L-1时,不仅可强化反硝化除磷效果,而且可以节省内循环所需能耗;厌氧/缺氧/好氧区最佳体积比为1/1/2;旁流的引入可以提高低C/N比条件下TN的去除,最优旁流比为0.32.
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| 关 键 词： | A2O工艺 反硝化除磷 内循环比 体积比 旁流比 |
| 文章编号： | 0253-2468(2006)05-0722-06 |
| 收稿时间： | 03 23 2006 12:00AM |
| 修稿时间： | 03 29 2006 12:00AM |
Control strategies of enhancing denitrifying phosphorus removal performance of the conventional Anaerobic-Anoxic-Oxic process |
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| WANG Xiaolian,WANG Shuying,WANG Yayi and PENG Yongzhen.Control strategies of enhancing denitrifying phosphorus removal performance of the conventional Anaerobic-Anoxic-Oxic process[J].Acta Scientiae Circumstantiae,2006,26(5):722-727. |
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| Authors: | WANG Xiaolian WANG Shuying WANG Yayi and PENG Yongzhen |
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| Institution: | Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022,Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022,College of Civiel Engineering, Zhejiang University of Industry, Hangzhou 310014 and Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022 |
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| Abstract: | The lab-scale anaerobic-anoxic-oxic (A2/O) process for treating brewage wastewater was investigated for one year. The aims of this work were to improve nutrient removal efficiency and save energy by enhancing denitrifying phosphorus removal performance of A2/O system. Three kinds of operational strategies were proposed and investigated, i.e. (1) controlling nitrate recirculation flow rate; (2) adjusting the volume ratio of anaerobic /anoxic/oxic zone; (3) introducing bypass flow into anoxic zone and redistributing the bypass flow ratio. The results showed that not only anoxic P uptake could be stimulated but also recirculation energy consumption could be saved when anoxic effluent NO-3N concentration was controlled between 1~3 mg?L-1; the optimal volume ratio of anaerobic /anoxic/aerobic zone in this system was 1/1/2; The TN removal efficiency could be improved significantly through the introduction bypass flow even if at low C/N ratio, the optimal value of bypass flow ratio was 0.32. |
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| Keywords: | A^2/O process denitrifying phosphorus removal nitrate recirculation ratio the volume ratio bypass flow ratio |
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