RT Journal Article
T1 Unravelling the environmental and economic impacts of innovative technologies for the enhancement of biogas production and sludge management in wastewater systems
A1 Arias Cisterna, Andrea
A1 Behera, Chitta Ranjan
A1 Feijoo Costa, Gumersindo
A1 Sin, Gürkan
A1 Moreira Vilar, María Teresa
K1 High rate activated sludge (HRAS)
K1 Enhanced rotating belt filter (ERBF) integrated fixed film activated sludge (IFAS)
K1 Life cycle assessment (LCA)
K1 Scale-up analysis
K1 Wastewater treatment modelling
AB The retrofitting of wastewater treatment plants (WWTPs) should be addressed under sustainability criteria. It is well known that there are two elements that most penalize wastewater treatment: (i) energy requirements and (ii) sludge management. New technologies should reduce both of these drawbacks to address technical efficiency, carbon neutrality and reduced economic costs.In this context, the main objective of this work was to evaluate two real plants of different size in which major modifications were considered: enhanced recovery of organic matter (OM) in the primary treatment and partial-anammox nitrification process in the secondary treatment. Plant-wide modelling provided an estimate of the input and output flows of each process unit as well as the diagnosis of the main performance indicators, which served as a basis for the calculation of environmental and economic indicators using the LCA methodology.The combination of high-rate activated sludge (HRAS) + partial nitrification Anammox can decrease the environmental impacts by about 70% in the climate change (CC) category and 50% in the eutrophication potential (EP) category. Moreover, costs can be reduced by 35–45% depending on the size of the plant. In addition, the enhanced rotating belt filter (ERBF) can also improve the environmental profile, but to a lesser extent than the previous scenario, only up to 10% for CC and 15% for EP. These positive results are only possible considering the production of energy through biogas valorization according to the waste-to-energy scheme
PB Elsevier
SN 0301-4797
YR 2020
FD 2020
LK http://hdl.handle.net/10347/23062
UL http://hdl.handle.net/10347/23062
LA eng
NO Journal of Environmental Management. Volume 270, 15 September 2020, 110965. doi: https://doi.org/10.1016/j.jenvman.2020.110965
NO This research was supported by the UE project: Pioneer_STP (PCIN-2015-22 (MINECO)/ID199 (WaterJPI). The authors (A. Arias, G. Feijoo and M.T. Moreira) belong to the Galician Competitive Research Group (GRC ED431C 2017/29) and to the CRETUS Strategic Partnership (ED431E 2018/01). Other authors (C.R. Behera and G. Sin) belongs to Process and Systems Engineering Center (PROSYS), DTU Chemical Engineering
DS Minerva
RD 27 abr 2026