RT journal article
T1 Selecting sewage sludge treatment alternatives in modern wastewater treatment plants using environmental decision support systems
A1 Garrido-Baserba, M.
A1 Molinos-Senante, M.
A1 Abelleira Pereira, José María
A1 Fernández Güelfo, Luis Alberto
A1 Poch, M.
A1 Hernández-Sancho, F.
A2 Ingeniería Química y Tecnología de Alimentos
K1 Composite indicator
K1 Cost-benefit analysis (CBA)
K1 Environmental decision support system
K1 Global warming potential (GWP)
K1 Knowledge-based methodology
K1 Sewage sludge treatment technologies
AB The importance of the sewage sludge treatment within the field of wastewater treatment plants (WWTPs) suggests new dimensions of analysis where the relevance of economic criteria combined with the associated environmental issues are increasing the sludge management complexity. For supporting the decision process and for comparative purposes, this study assesses five alternative configurations for sludge treatment, namely: mesophilic and termophilic anaerobic digestion plus composting, incineration, gasification, and supercritical water oxidation (SCWO). The global warming potential (GWP) and the annual cash flow of each alternative are used to estimate a composite indicator for each alternative. Stakeholders' preferences are integrated into the assessment through the development of five scenarios prioritizing economic or environmental aspects. A case study for a 1 million person equivalent WWTP proved that SCWO is the most adequate option if economic and environmental criteria are considered equally important. However, if the economic assessment is prioritized over the environmental one, thermophilic anaerobic digestion followed by composting turned out to be the most appropriate option. The proposed approach contributes to the implementation of more suitable sewage sludge treatment lines since it provides an indicator for each alternative embracing economic and GWP issues.
PB Elsevier
SN 0959-6526
YR 2015
FD 2015-11-16
LK http://hdl.handle.net/10498/35225
UL http://hdl.handle.net/10498/35225
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026