Cost-effectiveness analysis of sewer mining versus centralized wastewater treatment: Case study of the Arga river basin, Spain

Autor: A.L. Esteban-García, Ramón Sala-Garrido, María Molinos-Senante, Francesc Hernández-Sancho, Iñaki Tejero, Marta González-Viar, Loredana De-Florio, Rubén Díez-Montero
Přispěvatelé: Universidad de Cantabria
Rok vydání: 2015
Předmět:
Zdroj: Urban Water Journal, Vol. 13, No.3, (April 2016), p. 321-330
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)
ISSN: 1744-9006
1573-062X
DOI: 10.1080/1573062x.2014.991742
Popis: In the context of the EU Water Framework Directive, a Cost-Effectiveness Analysis (CEA) was performed to compare centralized and decentralized wastewater treatment strategies aimed to improve the ecological status of a Spanish river. The implementation of several hybrid membrane bioreactors within the urban framework for sewer mining (SM) was compared with the more common wastewater treatment plant enlargement option. The assessment ranked 6 alternatives based on 12 potential scenarios, aimed at narrowing the uncertainty of the CEA. The cost analysis illustrated that SM is the most expensive option regarding both investment and operation and maintenance costs. However, the effectiveness of the alternatives evaluated depends significantly on the scenarios considered, being SM the most effective in most cases. Finally, the cost-effectiveness ratio showed SM as the best cost-effective alternative. CEA provides an ecological-economic indicator useful to prioritize wastewater treatment alternatives to achieve a given objective.
Databáze: OpenAIRE