Automatic control strategy for biological nitrogen removal of low C/N wastewater in a sequencing batch reactor

N. Kishida*, J. H. Kim, M. Chen, S. Tsuneda, Hi Sasaki, R. Sudo

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

To establish an automatic control system of external carbon addition in biological nitrogen removal, a bench-scale sequencing batch reactor with real-time control strategy was designed in this study. An oxidation-reduction potential (ORP) profile was used for automatic control of external carbon addition. The mean removal efficiency of total organic carbon was over 98%. Complete denitrification in an anoxic phase and complete denitrification and nitrification in anoxic and oxic phases were accomplished, respectively, because the oxic and anoxic periods were also appropriately controlled with ORP and pH profiles, respectively. Mean removal efficiency of total nitrogen was over 95%. When concentration of influent wastewater was changed, volume of additional carbon was automatically changed with the influent fluctuation, and flexible hydraulic retention time was achieved in this system.

本文言語English
ページ(範囲)45-50
ページ数6
ジャーナルWater Science and Technology
50
10
出版ステータスPublished - 2004 12月 1

ASJC Scopus subject areas

  • 環境工学
  • 水の科学と技術

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