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Related Experiment Videos

Biological denitrification in a sequencing batch reactor.

P Dangcong1, W Yi, W Hao

  • 1School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, People's Republic of China. dcpeng@xauat.edu.cn

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|January 20, 2005
PubMed
Summary

This study shows that Sequencing Batch Reactors (SBRs) effectively develop active granular sludge for biological denitrification. This technology achieves high nitrate removal efficiency, exceeding 99%.

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Area of Science:

  • Environmental microbiology
  • Wastewater treatment technologies

Background:

  • Biological denitrification is crucial for removing nitrates from wastewater.
  • Developing efficient microbial communities is key to effective denitrification.

Purpose of the Study:

  • To investigate the performance of biological denitrification in a Sequencing Batch Reactor (SBR).
  • To assess the feasibility of using granular sludge for high-efficiency nitrate removal.

Main Methods:

  • Utilized a Sequencing Batch Reactor (SBR) for biological denitrification.
  • Characterized granular sludge using scanning electron microscopy.
  • Evaluated denitrification performance under high nitrate loading rates.

Main Results:

Related Experiment Videos

  • Successfully developed active granular sludge with good settling properties in the SBR.
  • Achieved a high nitrate loading rate of 0.48 kg NO3-N dm(-3) d(-1).
  • Demonstrated a nitrate removal efficiency exceeding 99%.

    • Conclusions:

    • Sequencing Batch Reactors (SBRs) are effective for developing granular sludge for biological denitrification.
    • The developed granular sludge supports high-efficiency nitrate removal.
    • Rod-shaped bacteria are key players in nitrate and nitrite metabolism within the granules.