Biotechnology and Bioprocess Engineering:BBE

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Quantitative Study of the Reformation of Excess Sludge by Intense Aeration Under Nutrient-poor Conditions

  • L Guang Wei (iSchool of Environmental Science and Technology, Tianjin University) ;
  • Chen Liming (School of Environmental Science and Technology, Tianjin University) ;
  • Toda Kiyoshi (Department of Applied Chemistry and Biotechnology, Niigata Institute of Technology) ;
  • Zhang Shuting (School of Environmental Science and Technology, Tianjin University)
  • Published : 2004.11.01
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Abstract

In the course of anaerobic storage of excess sludge, odors due to chemicals such as hydrogen sulfide are produced. These odors cause many problems. Many methods have been developed to eliminate odors, but all current methods are not only costly, but also largely inef­fective. In this paper, we investigate the process of transformation of sludge microorganism cul­tures through intense aeration under nutrient-poor conditions, in terms of the selective adjust­ment and control of microorganism culture. The aerated sludge is subsequently returned to the adjusting pool, where the microorganisms inhibit odors, thus the excess sludge itself will act as an odor inhibitor. The process can be verified in terms of viability, in that the degradation capac­ity of the sludge was maintained after the intensely-aerated sludge was returned to the treat­ment system.

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References

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