2009 Volume 3 Issue 2
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Li Zhi, Li Zhihua, Wang Xiaochang, Lu Yuan, Zhang Yong, Wang chun. Effects of salinity and organic load on the growth of autotrophic and heterotrophic bacteria[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 205-208.
Citation: Li Zhi, Li Zhihua, Wang Xiaochang, Lu Yuan, Zhang Yong, Wang chun. Effects of salinity and organic load on the growth of autotrophic and heterotrophic bacteria[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 205-208.
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Effects of salinity and organic load on the growth of autotrophic and heterotrophic bacteria

  • 1.

    Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology ,Xi’an 710055

  • Received Date: 09/08/2008
    Accepted Date: 18/06/2008
    Fund Project:
  • The growth of autotrophic and heterotrophic bacteria in aerobic granules under different salinities and organic load (OL) was studied in this work. It was found that (1) granules under a high OL (8 kg COD/（m3·d)) was more stable under the saline shock; (2) the salinity affected autotrophic nitrifying bacteria more significantly than heterotrophic in terms of COD removal efficiency;(3) under low OL (1.6 kg COD/(m3·d)), autotrophic nitrifying bacteria could predominate in granules while under high OL, heterotrophic bacteria predominated.
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Effects of salinity and organic load on the growth of autotrophic and heterotrophic bacteria

  • Received Date: 09/08/2008
  • Accepted Date: 18/06/2008
Fund Project:

Abstract: The growth of autotrophic and heterotrophic bacteria in aerobic granules under different salinities and organic load (OL) was studied in this work. It was found that (1) granules under a high OL (8 kg COD/（m3·d)) was more stable under the saline shock; (2) the salinity affected autotrophic nitrifying bacteria more significantly than heterotrophic in terms of COD removal efficiency;(3) under low OL (1.6 kg COD/(m3·d)), autotrophic nitrifying bacteria could predominate in granules while under high OL, heterotrophic bacteria predominated.

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