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Water Resources Management

, Volume 28, Issue 4, pp 979–997 | Cite as

Environmental Assessment of Sewer Construction in Small to Medium Sized Cities Using Life Cycle Assessment

  • Anna Petit-Boix
  • David Sanjuan-Delmás
  • Carles M. Gasol
  • Gara Villalba
  • María Eugenia Suárez-Ojeda
  • Xavier Gabarrell
  • Alejandro Josa
  • Joan Rieradevall
Article

Abstract

In a world with an increasing urban population, analysing the construction impacts of sanitation infrastructures through Life Cycle Assessment (LCA) is necessary for defining the best environmental management strategies. In this study, the environmental impacts of one linear meter of sewer constructive solution were analysed for different pipe materials and diameters used in Southern Europe; a unit of different sewer appurtenances (pump, manhole and inspection chamber) was also considered. The impacts of the pipe materials were compared considering different lifespan periods and high-density polyethylene (HDPE) turned out to be the worst option, being polyvinyl chloride (PVC) and concrete the most favourable ones. Few data are available on the material and energy flows in the installation stage; therefore, a comparative analysis of trenches with sand and concrete bedding was conducted. The results show that the installation stage represents up to 80 % of the total life-cycle impact of the constructive solutions. Concrete pipes with half-concrete/half-sand bedding are the best option and produce 20–30 % of the impact of HDPE pipes with concrete bedding. Hence, designers should focus not only on the pipe but also on the trench model. A methodology was presented to enable the impact aggregation of the different sewer elements, and Betanzos (Spain) was selected to conduct a pilot study in small cities. In the future, studies will need to incorporate the use and maintenance stage, as it is not standard and varies according to the physical features of the cities. Finally, this study provides basic concepts for developing eco-efficiency indicators.

Keywords

Pipe Appurtenance LCI Urban Construction Smart cities 

Notes

Acknowledgments

This study was carried out in the framework of the AQUAENVEC project (LIFE10/ENV/ES/000520) “Assessment and improvement of the urban water cycle eco-efficiency using LCA and LCC”. The authors would like to thank the Water Technology Centre (CETaqua) and CLABSA for supplying all of the data and for their technical advice. The authors are also grateful for the support of the Spanish Ministry of Education and Science through the projects BIA2010-20789-C04-01 and CTM2010-17365.

Supplementary material

11269_2014_528_MOESM1_ESM.pdf (192 kb)
ESM 1 (PDF 192 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Anna Petit-Boix
    • 1
  • David Sanjuan-Delmás
    • 1
  • Carles M. Gasol
    • 1
    • 2
  • Gara Villalba
    • 1
    • 3
  • María Eugenia Suárez-Ojeda
    • 3
  • Xavier Gabarrell
    • 1
    • 3
  • Alejandro Josa
    • 4
    • 5
  • Joan Rieradevall
    • 1
    • 3
  1. 1.Sostenipra (ICTA-IRTA-Inèdit), Institute of Environmental Science and Technology (ICTA)Universitat Autònoma de Barcelona (UAB), Campus UABBarcelonaSpain
  2. 2.Inèdit Innovació SL, Research Park of the Universitat Autònoma de BarcelonaUniversitat Autònoma de Barcelona (UAB), Campus UABBarcelonaSpain
  3. 3.Department of Chemical Engineering, Biotechnology Reference Network (XRB), School of Engineering (ETSE)Universitat Autònoma de Barcelona (UAB)BarcelonaSpain
  4. 4.Department of Geotechnical Engineering and Geosciences, School of Civil EngineeringUniversitat Politècnica de Catalunya-Barcelona Tech (UPC)BarcelonaSpain
  5. 5.Institute of SustainabilityUniversitat Politècnica de Catalunya-Barcelona Tech (UPC)BarcelonaSpain

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