Removal of organic substances and oxidation of ammonium nitrogen by a down-flow hanging sponge (DHS) reactor under high salinity conditions

Shigeki Uemura, Saori Suzuki, Kenichi Abe, Keiichi Kubota, Takashi Yamaguchi, Akiyoshi Ohashi, Yasuyuki Takemura, Hideki Harada

研究成果: Article査読

34 被引用数 (Scopus)

抄録

A down-flow hanging sponge (DHS) reactor, constructed by connecting three identical treatment units in series, was fed with highly saline artificial coke-plant wastewater containing 1400 mg L-1 of phenol in terms of chemical oxygen demand (COD) and 500 mg-N L-1 of ammonium nitrogen. The COD was removed by the 1st unit, achieving 92% removal at an average COD loading rate of 3.0 kg-COD m-3 d-1 for all units, with oxidation of ammonium nitrogen occurring primarily in the two downstream units. Microbial assays of the different units of the reactor revealed greater numbers of nitrifying bacteria in the 2nd and 3rd units than in the 1st unit, corresponding with the observed ammonium oxidation pattern of the reactor. These findings suggest that a succession of microflora was successfully established along the DHS.

本文言語English
ページ(範囲)5180-5185
ページ数6
ジャーナルBioresource Technology
101
14
DOI
出版ステータスPublished - 2010 7

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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