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温度对城市污水厂尾水反硝化MBBR深度脱氮的影响

刘凯 王海燕 马名杰 张传祥 苑泉 杭前宇 李春梅

刘凯, 王海燕, 马名杰, 张传祥, 苑泉, 杭前宇, 李春梅. 温度对城市污水厂尾水反硝化MBBR深度脱氮的影响[J]. 环境科学研究, 2016, 29(6): 877-886.
引用本文: 刘凯, 王海燕, 马名杰, 张传祥, 苑泉, 杭前宇, 李春梅. 温度对城市污水厂尾水反硝化MBBR深度脱氮的影响[J]. 环境科学研究, 2016, 29(6): 877-886.
LIU Kai, WANG Haiyan, MA Mingjie, ZHANG Chuanxiang, YUAN Quan, HANG Qianyu, LI Chunmei. Influence of Temperature on Nitrogen Removal from Wastewater Treatment Plant Effluent by Denitrification MBBR[J]. Research of Environmental Sciences, 2016, 29(6): 877-886.
Citation: LIU Kai, WANG Haiyan, MA Mingjie, ZHANG Chuanxiang, YUAN Quan, HANG Qianyu, LI Chunmei. Influence of Temperature on Nitrogen Removal from Wastewater Treatment Plant Effluent by Denitrification MBBR[J]. Research of Environmental Sciences, 2016, 29(6): 877-886.

温度对城市污水厂尾水反硝化MBBR深度脱氮的影响

基金项目: 国家水体污染控制与治理科技重大专项(2014ZX07216-001)

Influence of Temperature on Nitrogen Removal from Wastewater Treatment Plant Effluent by Denitrification MBBR

  • 摘要: 为解决城市污水厂尾水再生利用时ρ(TN)高的问题,采用反硝化MBBR(移动床生物膜反应器)对城市污水厂尾水进行反硝化脱氮,并重点研究不同温度下分别以聚乙烯和聚丙烯为填料的反硝化MBBR的运行效果. 结果表明:在HRT(水力停留时间)为12 h、温度分别为13、19、25和30 ℃时,NO3--N去除率和反硝化能力变化不大,聚乙烯和聚丙烯反硝化MBBR的NO3--N去除率分别为80.1%~85.0%和78.2%~84.0%,二者的反硝化能力分别为6.7~7.1和6.5~7.0 mg/(L·h);较长的HRT弥补了低温时反硝化速率低的不足;随温度增加,生物量逐渐增加,但CODCr和DOM(溶解性有机物)的去除率变化不明显. 三维荧光图谱表明,出水中主要的DOM(溶解性有机质)为类色氨酸和类富里酸,聚乙烯和聚丙烯反硝化MBBR对DOM总荧光强度的去除率分别为47.6%~52.5%和24.1%~35.8%. 填料上的微生物以杆菌、丝状菌和球菌为主. 综合考虑脱氮效能和有机物污染物去除效能,聚乙烯和聚丙烯反硝化MBBR深度脱氮的最佳温度均为25 ℃.

     

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出版历程
  • 收稿日期:  2016-01-14
  • 修回日期:  2016-02-25
  • 刊出日期:  2016-06-25

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