Comparison of nutrient removal efficiency between pre- and post-denitrification wastewater treatments

K. Hamada, T. Kuba, V. Torrico, M. Okazaki, T. Kusuda

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

A shortage of organic substances (COD) may cause problems for biological nutrient removal, that is, lower influent COD concentration leads to lower nutrient removal rates. Biological phosphorus removal and denitrification are reactions in which COD is indispensable. As for biological simultaneous nitrogen and phosphorus removal systems, a competition problem of COD utilisation between polyphosphate accumulating organisms (PAOs) and non-polyphosphate-accumulating denitrifiers is not avoided. From the viewpoint of effective utilisation of limited influent COD, denitrifying phosphorus-removing organisms (DN-PAOs) can be effective. In this study, DN-PAOs activities in modified UCT (pre-denitrification process) and DEPHANOX (post-denitrification ptocess) wastewater treatments were compared. In conclusion, the post-denitrification systems can use influent COD more effectively and have higher nutrient removal efficiencies than the conventional pre-denitrification systems.

本文言語英語
ページ(範囲)169-175
ページ数7
ジャーナルWater Science and Technology
53
9
DOI
出版ステータス出版済み - 7 5 2006

All Science Journal Classification (ASJC) codes

  • 環境工学
  • 水の科学と技術

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