The seasonal variation of emission of greenhouse gases from a full-scale sewage treatment plant

Shuhei Masuda, Shunsuke Suzuki, Itsumi Sano, Yu You Li, Osamu Nishimura

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The seasonal variety of greenhouse gas (GHGs) emissions and the main emission source in a sewage treatment plant were investigated. The emission coefficient to treated wastewater was 291 gCO2m-3. The main source of GHGs was CO2 from the consumption of electricity, nitrous oxide from the sludge incineration process, and methane from the water treatment process. They accounted for 43.4%, 41.7% and 8.3% of the total amount of GHGs emissions, respectively. The amount of methane was plotted as a function of water temperature ranging between 13.3 and 27.3°C. An aeration tank was the main source of methane emission from all the units. Almost all the methane was emitted from the aeration tank, which accounted for 86.4% of the total gaseous methane emission. However, 18.4% of the methane was produced in sewage lines, 15.4% in the primary sedimentation tank, and 60.0% in the aeration tank.

Original languageEnglish
Pages (from-to)167-173
Number of pages7
JournalChemosphere
Volume140
DOIs
Publication statusPublished - 2015 Dec 1

Keywords

  • Greenhouse gas
  • LCA
  • Methane
  • Nitrous oxide
  • Sewage treatment plant

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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