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火山岩填料曝气生物滤池内循环强化脱氮试验研究

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郝晓地, 魏丽, 仇付国. 火山岩填料曝气生物滤池内循环强化脱氮试验研究[J]. 环境工程学报, 2009, 3(2): 239-245.
引用本文: 郝晓地, 魏丽, 仇付国. 火山岩填料曝气生物滤池内循环强化脱氮试验研究[J]. 环境工程学报, 2009, 3(2): 239-245.
shu
Hao Xiaodi, Wei Li, Qiu Fuguo. Experimental study on enhancing nitrogen removal by effluent recirculation in a BAF reactor with crushed lava packed as carriers[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 239-245.
Citation: Hao Xiaodi, Wei Li, Qiu Fuguo. Experimental study on enhancing nitrogen removal by effluent recirculation in a BAF reactor with crushed lava packed as carriers[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 239-245.
shu

火山岩填料曝气生物滤池内循环强化脱氮试验研究

  • 1.

    北京建筑工程学院可持续环境生物技术研发中心，北京 100044

  • 基金项目:

    “十一五”国家科技支撑计划重点项目（2006BAJ01B03-02）

    北京市属市管高等学校人才强教计划资助项目（BJE10016200611）

  • 中图分类号: X703

Experimental study on enhancing nitrogen removal by effluent recirculation in a BAF reactor with crushed lava packed as carriers

  • 1.

    The R & D Center for Sustainable Environmental Biotechnology, Beijing University of Civil Engineering and Architecture, Beijing 100044

  • Fund Project:

摘要

  • 摘要: 试验表明，被粉碎的火山岩是一种较好的曝气生物滤池填料。出水内循环虽然对COD、SS以及浊度没有太大影响，甚至因试验期间低温限制使得硝化效果改善并不明显，但内循环可以显著提高曝气生物滤池反硝化（脱氮）效果。在内循环比为150%时，硝化过程中产生的NO-3几乎均能被反硝化完全去除，只是由于试验时的低温限制了硝化效率使TN去除效率提高幅度受到限制，从无内循环时的438%仅仅被提高到69.1%。DO值沿填料层高度呈山谷型分布（谷底位于填料层50 cm处）规律揭示，DO谷底是反硝化的拐点，也是反硝化与硝化的分界点。
    Abstract: It was demonstrated in a pilot experiment that crushed lava was good carriers in an up-flow biological aerated filter (UBAF). The removal efficiencies of COD, SS, and turbidity were not affected by effluent recirculation, and moreover the efficiency of nitrification was not enhanced too much due to the effect of low temperature during the experiment, but the removal efficiency of total nitrogen (TN) was indeed enhanced by effluent recirculation. Up to effluent recirculation at R=150%, NO-3 converted from nitrification could be fully removed by denitrification. Due to limited nitrification at low temperatures, however, the removal efficiency of TN was enhanced at a limited extent (from 43.8% at R=0 to 69.1% at R=150%). The valley-type DO profile along the bed height （the DO valley at 50 cm）revealed that the DO valley was a turning point for denitrification and also was a boundary of nitrification and denitrification.
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出版历程
  • 收稿日期:  2008-08-28
郝晓地, 魏丽, 仇付国. 火山岩填料曝气生物滤池内循环强化脱氮试验研究[J]. 环境工程学报, 2009, 3(2): 239-245.
引用本文: 郝晓地, 魏丽, 仇付国. 火山岩填料曝气生物滤池内循环强化脱氮试验研究[J]. 环境工程学报, 2009, 3(2): 239-245.
shu
Hao Xiaodi, Wei Li, Qiu Fuguo. Experimental study on enhancing nitrogen removal by effluent recirculation in a BAF reactor with crushed lava packed as carriers[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 239-245.
Citation: Hao Xiaodi, Wei Li, Qiu Fuguo. Experimental study on enhancing nitrogen removal by effluent recirculation in a BAF reactor with crushed lava packed as carriers[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 239-245.
shu

火山岩填料曝气生物滤池内循环强化脱氮试验研究

  • 1. 北京建筑工程学院可持续环境生物技术研发中心，北京 100044
  • 收稿日期:  2008-08-28
基金项目:

“十一五”国家科技支撑计划重点项目（2006BAJ01B03-02）

北京市属市管高等学校人才强教计划资助项目（BJE10016200611）

摘要: 试验表明，被粉碎的火山岩是一种较好的曝气生物滤池填料。出水内循环虽然对COD、SS以及浊度没有太大影响，甚至因试验期间低温限制使得硝化效果改善并不明显，但内循环可以显著提高曝气生物滤池反硝化（脱氮）效果。在内循环比为150%时，硝化过程中产生的NO-3几乎均能被反硝化完全去除，只是由于试验时的低温限制了硝化效率使TN去除效率提高幅度受到限制，从无内循环时的438%仅仅被提高到69.1%。DO值沿填料层高度呈山谷型分布（谷底位于填料层50 cm处）规律揭示，DO谷底是反硝化的拐点，也是反硝化与硝化的分界点。

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