Enhancing aerobic granulation for biological nutrient removal from domestic wastewater

M. Coma, M. Verawaty, M. Pijuan, Z. Yuan, P. L. Bond

Research output: Contribution to journalArticlepeer-review

103 Citations (Scopus)

Abstract

This study focuses on the enhancement of aerobic granulation and biological nutrient removal maintenance treating domestic wastewater. Two sequencing batch reactors (SBRs) were inoculated with either only floccular sludge (100%-floc SBR) or supplemented with 10% crushed granules (90%-floc SBR). Granules developed in both reactors. The 100%-floc SBR achieved 75% of nitrogen and 93% of phosphorus removal at the end of the performance, but some floccular sludge remained in the system. The 90%-floc SBR became fully granulated and finished with 84% and 99% of nitrogen and phosphorus removal, respectively. Regarding biological phosphorus removal, nitrite was identified as an inhibitor of the process. Nitrite levels lower than 5mgN-NO2-L -1 were used for anoxic phosphate uptake while higher concentrations inhibited the process.

Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalBioresource Technology
Volume103
Issue number1
DOIs
Publication statusPublished - Jan 2012

Keywords

  • Aerobic granular sludge
  • Biological nutrient removal
  • Domestic wastewater
  • Nitrite inhibition
  • Seed sludge

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

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