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EGSB反应器运行中的床层流态行为及其控制

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方皓, 周羽化, 王凯军. EGSB反应器运行中的床层流态行为及其控制[J]. 环境工程学报, 2013, 7(9): 3249-3255.
引用本文: 方皓, 周羽化, 王凯军. EGSB反应器运行中的床层流态行为及其控制[J]. 环境工程学报, 2013, 7(9): 3249-3255.
shu
Fang Hao, Zhou Yuhua, Wang Kaijun. Flow properties of granular bed and control in operation of EGSB reactor[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3249-3255.
Citation: Fang Hao, Zhou Yuhua, Wang Kaijun. Flow properties of granular bed and control in operation of EGSB reactor[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3249-3255.
shu

EGSB反应器运行中的床层流态行为及其控制

  • 1.

    北京市环境保护科学研究院国家环境保护工业废水污染控制工程技术(北京)中心, 北京 100037

  • 2.

    中国环境科学研究院, 北京 100012

  • 3.

    清华大学环境学院, 北京 100084

  • 基金项目:

    国家"水体污染控制与治理"科技重大专项(2009ZX07209-003)

  • 中图分类号: X703

Flow properties of granular bed and control in operation of EGSB reactor

  • 1.

    State Environmental Protection and Industrial Wastewater Pollution Control Engineering and Technology(Beijing)Center, Beijing Municipal Research Institute of Envrionmental Protection, Beijing 100037, China

  • 2.

    Chinese Research Academy of Environmental Sciences, Beijing 100012, China

  • 3.

    School of Environment, Tsinghua University, Beijing 100084, China

  • Fund Project:

  • 摘要: 生物量流失是EGSB反应器在高负荷状态下稳定运行面临的主要问题。利用实验室EGSB反应器在中温条件下处理高浓度葡萄糖废水,研究EGSB反应器在高负荷状态下的床层流态行为及其受影响因素。结果表明,在该反应器结构形式下,当有机负荷达到23~26 kg COD/(m3·d),水力上升流速在约3.0 m/h,气体上升流速在约1.3 m/h状态下运行时,床层易发生剧烈流化现象,并导致颗粒污泥的解体和流失。降低反应器回流比、减小反应器内水力上升流速,控制床层在悬浮状态时可以有效降低高负荷状态下生物量的流失,并取得了有机负荷46 kg COD/(m3·d),COD去除率97％以上的处理效果。
    Abstract: Biomass washout is the main problem for EGSB reactor under the conditions of stable operating with high organic loading rate. Through the operation of laboratory EGSB reactor on high-rate anaerobic treatment of high concentration glucose wastewater at mid temperature, flow properties of granular bed and the affecting factors in EGSB were investigated. When the organic load reached 23~26 kg COD/(m3·d), the hydraulic velocity increased around 3.0 m/h, and the gas velocity increased around 1.3 m/h, the dramatic fluidization of the granular bed occurred and caused the collapse and loss of the sludge granular correspondingly. Generally, our experiments showed that the EGSB reactor could efficiently reduce the biomass loss under high load conditions by decreasing the reflux ratio and hydraulic velocity, and controlling the suspending condition of granular bed. The reactor performance was significantly improved, the organic load was 46 kg COD/(m3·d) and the COD removal efficiency was above 97%.
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  • [1] 王凯军. 厌氧工艺的发展和新型厌氧反应器.环境科学,1998,19(1):94-96 Wang Kaijun. Development of anaerobic processes and new type anaerobic reactors. Enviromental Science, 1998,19(1):94-96(in Chinese)
    [2] 王凯军, 贺延龄, 江翰,等. 厌氧悬浮床反应器的膨胀模型研究. 环境工程学报, 2008,2(3):289-293 Wang Kaijun, He Yanling, Jiang Han, et al. Study of control and expand model for suspended granular sludge bed reactor.Chinese Journal of Environmental Engineering,2008,2(3):289-293(in Chinese)
    [3] 金涌,祝京旭,汪展文,等. 流态化工程原理. 北京:清华大学出版社, 2001. 485-486
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    [5] Khang S. J., Schwartg J.G., Buttke R.D. A practical wake model for estimating bed expansion and holdup in three phase fluidized systems. Fluidigation and Fluid-Particle Systems, AIChE Symp. Series,1983,79(222):47-54
    [6] Diez Blanco V., García Encina P.A., Fdz-Polanco F. Effects of biofilm growth, gas and liquid velocity on the expansion of an anaerobic fluidized bed reactor (AFBR). Wat. Res.,1995,29(7):1649-1654
    [7] 吴占松, 马润田, 汪展文. 流态化技术基础及应用. 北京:化学工业出版社,2006. 65-66
    [8] 王凯军, 常丽春, 甘海南. 厌氧颗粒污泥悬浮床反应器的研究与应用. 给水排水,2007,33(2):58-62 Wang Kaijun, Chang Lichun, Gan Hainan. Research and application of anaerobic granular sludge suspended bed reactor. Water & Wastewater,2007,33(2):58-62(in Chinese)
    [9] 任洪强,丁丽丽,陈坚,等.EGSB反应器中颗粒污泥床工作状况及污泥性质研究.环境科学研究,2001,14(3):33-37 Ren Hongqiang,Ding Lili,Chen Jian,et al. Study on the characteristics of granular sludge bed and granular sludge in EGSB reactor. Research of Environmental Sciences, 2001,14(3):33-37(in Chinese)
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出版历程
  • 收稿日期:  2012-09-17
  • 刊出日期:  2013-09-15
方皓, 周羽化, 王凯军. EGSB反应器运行中的床层流态行为及其控制[J]. 环境工程学报, 2013, 7(9): 3249-3255.
引用本文: 方皓, 周羽化, 王凯军. EGSB反应器运行中的床层流态行为及其控制[J]. 环境工程学报, 2013, 7(9): 3249-3255.
shu
Fang Hao, Zhou Yuhua, Wang Kaijun. Flow properties of granular bed and control in operation of EGSB reactor[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3249-3255.
Citation: Fang Hao, Zhou Yuhua, Wang Kaijun. Flow properties of granular bed and control in operation of EGSB reactor[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3249-3255.
shu

EGSB反应器运行中的床层流态行为及其控制

  • 1. 北京市环境保护科学研究院国家环境保护工业废水污染控制工程技术(北京)中心, 北京 100037
  • 2. 中国环境科学研究院, 北京 100012
  • 3. 清华大学环境学院, 北京 100084
  • 收稿日期:  2012-09-17
基金项目:

国家"水体污染控制与治理"科技重大专项(2009ZX07209-003)

摘要: 生物量流失是EGSB反应器在高负荷状态下稳定运行面临的主要问题。利用实验室EGSB反应器在中温条件下处理高浓度葡萄糖废水,研究EGSB反应器在高负荷状态下的床层流态行为及其受影响因素。结果表明,在该反应器结构形式下,当有机负荷达到23~26 kg COD/(m3·d),水力上升流速在约3.0 m/h,气体上升流速在约1.3 m/h状态下运行时,床层易发生剧烈流化现象,并导致颗粒污泥的解体和流失。降低反应器回流比、减小反应器内水力上升流速,控制床层在悬浮状态时可以有效降低高负荷状态下生物量的流失,并取得了有机负荷46 kg COD/(m3·d),COD去除率97％以上的处理效果。

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