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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

esign and techno-economic analysis of a hybrid system for energy supply in a wastewater treatment plant: A decentralized energy strateg

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Author(s):
Buller, L. S. [1] ; Sganzerla, W. G. [1] ; Berni, M. D. [2] ; Brignoli, S. C. [3] ; Forster-Carneiro, T. [1]
Total Authors: 5
Affiliation:
[1] Univ Campinas UNICAMP, Sch Food Engn, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
[2] Univ Campinas UNICAMP, Ctr Energy Planning NIPE, Rua Cora Coralina, BR-13083896 Campinas, SP - Brazil
[3] Serv Saneamento Mogi Mirim Sesamm, Rodovia Dr Amador Jorge Siqueira Franco, Km 4, BR-13805021 Mogi Mirim, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Environmental Management; v. 305, MAR 1 2022.
Web of Science Citations: 0
Abstract

The crescent urbanization generates large volumes of solid residues and wastewater, more and more geographically concentrated. This worldwide trend has also created new challenges regarding energy generation and consumption. Renewable energy sources can be strategic to keep up with the increasing energy demand, especially for under developing countries whose population is large. This study focuses on designing a hybrid system based on photovoltaic energy, biomass gasifier, and electricity grid to optimize the energy supply and the costs of a wastewater treatment plant (based on activated sludge system with extended aeration, high energy-demanding process). The optimal combination of energy technologies, with and without electric energy generation from biogas combustion derived from anaerobic digestion of sewage sludge, was assessed to define the better cost-effective arrangement. The cost of energy for an off-grid biomass gasifier standing alone is USD 0.0426/kWh. However, in a grid-connected system including photovoltaic energy and biomass gasifier, the cost was reduced to USD 0.0298/kWh with an energy surplus available to supply the whole facility requirement and enough to supply 788,000 residential power consumers. The hybrid combination with biogas combustion can be an alternative for medium-sized wastewater treatment plants, promoting economic and environmental benefits. Moreover, the results of this case study could be applied to other similar facilities towards cleaner and optimized sewage sludge recycling. (AU)

FAPESP's process: 18/05999-0 - Waste2energy: integration of the supercritical and anaerobic digestion technologies for the management of water and food waste
Grantee:Tânia Forster Carneiro
Support Opportunities: Regular Research Grants
FAPESP's process: 20/10323-5 - Life cycle and technical-financial assessment of the integration of anaerobic digestion and hydrothermal technologies for waste recovery
Grantee:Luz Selene Buller
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/26925-7 - Development of an automated system for biofuel precursor production using sub-critical technology
Grantee:William Gustavo Sganzerla
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 15/50612-8 - An integrated approach to explore a novel paradigm for biofuel production from lignocellulosic feedstocks
Grantee:Telma Teixeira Franco
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/14938-4 - Waste2energy: integration of supercritical technologies and anaerobic digestion through an automated system for the production of biofuel precursors
Grantee:Tânia Forster Carneiro
Support Opportunities: Research Grants - Young Investigators Grants - Phase 2