Microbial community composition of a down-flow hanging sponge (DHS) reactor combined with an up-flow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage

Kengo Kubota, Mikio Hayashi, Kengo Matsunaga, Akinori Iguchi, Akiyoshi Ohashi, Yu You Li, Takashi Yamaguchi, Hideki Harada

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The microbial community composition of a down-flow hanging sponge (DHS) reactor in an up-flow anaerobic sludge blanket (UASB)-DHS system used for the treatment of municipal sewage was investigated. The clone libraries showed marked differences in microbial community composition at different reactor heights and in different seasons. The dominant phylotypes residing in the upper part of the reactor were likely responsible for removing organic matters because a significant reduction in organic matter in the upper part was observed. Quantification of the amoA genes revealed that the proportions of ammonia oxidizing bacteria (AOB) varied along the vertical length of the reactor, with more AOB colonizing the middle and lower parts of the reactor than the top of the reactor. The findings indicated that sewage treatment was achieved by a separation of microbial habitats responsible for organic matter removal and nitrification in the DHS reactor.

Original languageEnglish
Pages (from-to)144-150
Number of pages7
JournalBioresource Technology
Volume151
DOIs
Publication statusPublished - 2013 Oct

Keywords

  • Ammonia oxidation
  • Down-flow hanging sponge (DHS)
  • Microbial community composition
  • Sewage treatment

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Microbial community composition of a down-flow hanging sponge (DHS) reactor combined with an up-flow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage'. Together they form a unique fingerprint.

  • Cite this