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水力负荷与低温对厌氧氨氧化与反硝化协同反应器的影响

吕 绛1,周少奇2,3   

  1. 1华南理工大学土木与交通学院,广东 广州 510640;2华南理工大学环境科学与工程学院,广东 广州 510006;3亚热带建筑科学国家重点实验室,广东 广州 510640
  • 出版日期:2010-10-05 发布日期:2010-10-05

Effect of hydraulic loading and low temperature for ANAMMOX-denitrification reactor

Lü Jiang1,ZHOU Shaoqi2   

  1. 1School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;2School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,Guangdong,China;3State Key Laboratory of Subtropical Building Science,Guangzhou 510640,Guangdong,China
  • Online:2010-10-05 Published:2010-10-05

摘要:

采用一套3.2 L具有填料的上流式厌氧污泥床反应器,在固定进水氨氮、亚硝氮和COD浓度的基础上,通过对进水负荷4个阶段的调节,考察其对厌氧氨氧化与反硝化协同反应器运行的影响。经试验发现,在低水力负荷条件下,氨氮、亚硝氮、COD的平均去除率分别达到了94.1%97.2%89.4%,出水硝氮的生成量为4.35 mg/L;而在高水力负荷条件下,氨氮、亚硝氮和COD的去除率下降较为明显,为54.2%73.9%81%,硝氮的生成量为9.97 mg/L。通过再次调低水力负荷,协同脱氮效果基本上能够恢复到之前的水平,表明反应器具备了一定的抗负荷冲击能力。同时低温会对反应器产生较大影响,但反应器内的菌群具备抵御低温并较快恢复的能力,保证了反应器二次启动的成功。

Abstract:

Effect of hydraulic loading for ANAMMOX-denitrification reactor of a 3.2L USAB with biofilm was investigated by modulating the hydraulic loading of reactor in four sequential periods while keeping the influent concentrations of ammonianitrite and COD unchanged. At low hydraulic loadingthe average removal rates of ammonianitrite and COD were 94.1%97.2% and 89.4%respectivelyand the nitrate production in effluent was 4.35 mg/L. At high hydraulic loadingthe average removal rates of ammonianitrite and COD showed a marked dropwhich were 54.2%73.9% and 81%respectivelyand the nitrate production in effluent was 9.97 mg/L. Through turning down the hydraulic loading againthe effect of ANAMMOX-denitrification synergistic interaction could be recoveredwhich demonstrated that the reactor has a certain anti-force capability. Great influence was observed when running the reactor at low temperaturebut the microbes in the reactor have capabilities of cold resisting and faster recoverywhich would ensure the success in the second start-up of the reactor.

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