化工学报 ›› 2013, Vol. 64 ›› Issue (4): 1276-1282.DOI: 10.3969/j.issn.0438-1157.2013.04.022

• 催化、动力学与反应器 • 上一篇    下一篇

高效反硝化分段组合式反应器运行性能

厉巍1, 郑平1, 谢作甫1,2, 张萌1, 宋吉1, 黄慎敏1, 练国强1   

  1. 1. 浙江大学环境工程系,浙江 杭州 310058;
    2. 浙江科技学院,浙江 杭州 310023
  • 收稿日期:2012-07-16 修回日期:2012-09-03 出版日期:2013-04-05 发布日期:2013-04-05
  • 通讯作者: 郑平
  • 作者简介:厉巍(1990—),男,博士研究生。
  • 基金资助:

    国家自然科学基金项目(31070110);高等学校博士学科点专项科研基金(20110101110078);浙江省自然科学基金重点项目(Z5110094)。

Performance of high-rate denitrifying compartmentalized anoxic reactor

LI Wei1, ZHENG Ping1, XIE Zuofu1,2, ZHANG Meng1, SONG Ji1, HUANG Shenmin1, LIAN Guoqiang1   

  1. 1. Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, Zhejiang, China;
    2. Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China
  • Received:2012-07-16 Revised:2012-09-03 Online:2013-04-05 Published:2013-04-05
  • Supported by:

    supported by the National Natural Science Foundation of China (31070110), the Research Fund for the Doctoral Program of Higher Education of China(20110101110078) and the Key Project of the Natural Science Foundation of Zhejiang Province(Z5110094).

摘要: 氮素污染是水体富营养化的主要诱因之一,反硝化技术是氮素污染控制的有效手段。采用模拟废水,研究了反硝化分段组合式反应器(CAR)的脱氮除碳性能。实验结果表明,CAR具有很高的容积效能,在进水NO3--N浓度为964.7 mg·L-1、水力停留时间为0.86 h条件下,硝氮去除速率(NRR)为26.8 kg·(m3·d)-1,COD去除速率(CRR)为93.76 kg·(m3·d)-1,NRR高于文献报道的最高值,CRR也达到文献报道的领先水平。CAR具有良好的运行稳定性,在反应器的效能上升阶段和效能稳定阶段,出水基质浓度的变异系数比和极差分别小于9.85和9.07,出水pH的相对标准差小于1。CAR运行性能出众的原因是它能持留浓度高(MLVSS高于17 g·L-1)、活性强(最大比活性为1.573 g NO3--N·(g VSS)-1·d-1)的颗粒污泥。

关键词: 废水脱氮除碳, 反硝化, 分段组合式反应器, 高效性, 稳定性

Abstract: Pollution of nitrogen compounds is one of the main factors that lead to eutrophication of water bodies, and biological denitrification has become an effective technology for control of nitrogen pollution.The performance of denitrifying compartmentalized anoxic reactor(CAR) was investigated with synthetic wastewater.The results showed that CAR is a high-rate reactor for nitrate removal.When influent nitrate concentration was 964.7 mg稬-1, hydraulic retention time was 0.86 h, the nitrate removal rate(NRR) and COD removal rate(CRR) reached as high as 26.8 kg?(m3穌)-1 and 93.76 kg?(m3穌)-1, respectively, which all were at the top level reported in the literature.During the operation, CAR's performance was stability.In both efficiency-elevation phase and efficiency-stationary phase, relative variation coefficient and relative range of effluent nitrate are less than 9.85 and 9.07, respectively.At the same time, the relative standard deviation of effluent pH is less than 1.The good performance of CAR could be ascribed to high biomass concentration(more than 17 g稬-1(MLVSS)) and high specific activity(more than 1.57 g NO3--N?(g VSS)-1-1).

Key words: nitrogen and COD removal, denitrification, CAR, high-rate, steady performance

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