Advertisement

Seasonal and Diurnal Variations of GHG Emissions Measured Continuously at the Viikinmäki Underground WWTP

  • A. Kuokkanen
  • A. Mikola
  • M. Heinonen
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 4)

Abstract

The gaseous emissions of an underground activated sludge treatment plant with total nitrogen removal have been measured on-line since 2012. The continuous Fourier transform infrared (FT-IR) measurement of CO2, NO, NO2, N2O, NH3 and CH4 is situated in the single exhaust air pipe, thus covering the whole wastewater treatment process. The measurement data from 2015 showed that the seasonal and diurnal variations of N2O and CH4 are considerable. When comparing N2O and CH4 emissions as CO2 equivalents to CO2 formed in the activated sludge process, the impact of N2O was dominant. The CH4 emission was considerably smaller, and the emissions of NOx and NH3 from biological treatment were small. The long term variations of N2O or CH4 production were not linked directly to load variations or other “apparent” factors such as temperature, nitrogen load, nitrogen reduction or anoxic volume. There was neither a clear seasonal pattern. The short interval variations of N2O were similar to but not identical with CO2 variations.

Keywords

GHG N2WWTP FTIR 

References

  1. Barker PS, Dold PL (1997) General model for biological nutrient removal activated-sludge systems: model presentation. Water Environ Res 69(5):969–984CrossRefGoogle Scholar
  2. Blomberg K, Kosse P, Mikola A, Kuokkanen A, Fred T, Heinonen M, Mulas M, Lübken M, Wichern M, Vahala R (submitted) Modelling nitrous oxide production in a full-scale wastewater treatment plant: a calibrated and validated extension of ASM3. Environ Sci TechnolGoogle Scholar
  3. Daelman MRJ, van Voorthuizen EM, van Dongen LGJM, Volcke EIP, van Loosdrecht MCM (2013) Methane and nitrous oxide emissions from municipal wastewater treatment – results from a long-term study. Water Sci Technol 67(10):2350–2355CrossRefGoogle Scholar
  4. Kosonen H, Heinonen M, Mikola A, Haimi H, Mulas M, Corona F, Vahala R (2016) Nitrous oxide production at a fully covered wastewater treatment plant: results of a long-term online monitoring campaign. Environ Sci Technol 50(11):5547–5554CrossRefGoogle Scholar
  5. Tseng LY, Robinson AK, Zhang X, Xu X, Southon J, Hamilton AJ, Sobhani R, Stenstrom MK, Rosso D (2016) Identification of preferential paths of fossil carbon within water resource recovery facilities via radiocarbon analysis. Environ Sci Technol 50(22):12166–12178CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • A. Kuokkanen
    • 1
  • A. Mikola
    • 2
  • M. Heinonen
    • 1
  1. 1.Helsinki Region Environmental Services AuthorityHelsinkiFinland
  2. 2.Department of Built EnvironmentAalto UniversityAaltoFinland

Personalised recommendations