Study on nitrified liquor recycling process operations using polyurethane foam sponge cubes as a biomass support medium

Hiroshi Deguchi, M. Kashiwaya

Research output: Contribution to journalConference article

27 Citations (Scopus)

Abstract

An experimental study was carried out to find a way of using sponge cubes as a biomass support medium to reaction tanks for nitrified liquor recycling process. Type-A, in which biomass fixed cubes are contacted with both anoxic and oxic stages and Type-B, where biomass fixed cubes are contacted with either anoxic or oxic stages, were selected as experimental cases. The results showed that the amount of CO2-C generated which was related to sludge production for Type-B exceeded the amount for Type-A by between 12 to 21%. The nitrification and denitrification rate coefficients at 20°C in Type-A were 1.5 and 1.6 times respectively higher than the coefficients for suspended growth. The rate coefficients in Type-B were 1.5 and 2.0 times respectively higher than the coefficients for Type-A.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalWater Science and Technology
Volume30
Issue number6 pt 6
Publication statusPublished - 1 Dec 1994
EventProceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1 - Budapest, Hung
Duration: 24 Jul 199430 Jul 1994

Keywords

  • Anoxic and oxic stages
  • Carbon balance
  • Denitrification rate coefficients
  • Nitrification rate coefficients
  • Nitrified liquor
  • Recycling process
  • Sponge cubes

Fingerprint Dive into the research topics of 'Study on nitrified liquor recycling process operations using polyurethane foam sponge cubes as a biomass support medium'. Together they form a unique fingerprint.

  • Cite this