Complete autotrophic denitrification in a single reactor using nitritation and anammox gel carriers

Kazuichi Isaka*, Yuya Kimura, Tomoko Yamamoto, Toshifumi Osaka, Satoshi Tsuneda

*この研究の対応する著者

研究成果: Article査読

39 被引用数 (Scopus)

抄録

A novel aerobic denitrification reactor, aerobic denitrification using nitrifying and anoxic ammonium-oxidizing (anammox) bacteria immobilized on gel carriers in a single stage (AIGES), was developed. Two types of gel carriers, a nitritation gel carrier and an anammox gel carrier, were installed in single reactor, and the denitrification performance of simultaneous nitritation and anammox was evaluated. The denitrification performance increased gradually with increased aeration rate, reaching a denitrification rate of 1.4kgNm-3d-1 2weeks after the nitritation and anammox gel carriers were mixed. A high average denitrification efficiency of 82% was confirmed. Stable aerobic denitrification performance was observed for more than half a year. In the startup period of AIGES operation, ammonia-oxidizing bacteria were shown by fluorescence in situ hybridization analysis to grow on the surface layer of anammox gel cubes. These results indicated that anammox gel carriers promptly adapted to an aerobic environment by altering the microbial ecosystem.

本文言語English
ページ(範囲)96-101
ページ数6
ジャーナルBioresource Technology
147
DOI
出版ステータスPublished - 2013 11

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 環境工学
  • 再生可能エネルギー、持続可能性、環境
  • 廃棄物管理と処理

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