Assessing the energetic and environmental impacts of the operation and maintenance of Spanish sewer networks from a life-cycle perspective
| Autor: | David Sanjuan-Delmás, Carles M. Gasol, Ramon Farreny, Joan Rieradevall, Xavier Gabarrell, Alejandro Josa, Sergio Chenel, María Eugenia Suárez-Ojeda, Gara Villalba, Desirée Marín, Anna Petit-Boix |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. MECMAT - Mecànica de Materials, Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Water flow
CITIES Population Sewerage--Spain Per capita Sanitary sewer education Sewerage--Maintenance and repair Operation Water Science and Technology Civil and Structural Engineering Consumption (economics) education.field_of_study Energy business.industry Clavegueram -- Espanya LCA Sewer City Environmental engineering WATER DISTRIBUTION-SYSTEMS Energy consumption Clavegueram -- Manteniment i reparació Enginyeria civil::Impacte ambiental [Àrees temàtiques de la UPC] URBAN FORM Wastewater Environmental science Electricity Enginyeria civil::Enginyeria hidràulica marítima i sanitària::Enginyeria sanitària [Àrees temàtiques de la UPC] Water resource management business |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname Universitat Jaume I |
| DOI: | 10.1007/s11269-015-0958-2 |
| Popis: | The final publication is available at Springer via http://dx.doi.org/10.1007/s11269-015-0958-2 The environmental impacts resulting from sewer networks are best analysed from a life-cycle perspective to integrate the energy requirements into the infrastructure design. The energy requirements for pumping wastewater depend on the configuration of the city (e.g., climate, population, length of the sewer, topography, etc.). This study analyses and models the effect of such site-specific features on energy consumption and related effects in a sample of Spanish cities. The results show that the average annual energy used by sewers (6.4 kWh/capita and 0.014 kWh/m3 of water flow) must not be underestimated because they may require up to 50 % of the electricity needs of a typical treatment plant in terms of consumption per capita. In terms of Global Warming Potential, pumping results in an average of 2.3 kg CO2eq./capita. A significant positive relationship was demonstrated between the kWh consumed and the length of the sewer and between other factors such as the population and wastewater production. In addition, Atlantic cities can consume 5 times as much energy as Mediterranean or Subtropical regions. A similar trend was shown in coastal cities. Finally, a simple predictive model of the electricity consumption was presented that considers the analysed parameters. |
| Databáze: | OpenAIRE |
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