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Sustainability 2019, 11(1), 66; https://doi.org/10.3390/su11010066

Optimal Management of a Hybrid Renewable Energy System Coupled with a Membrane Bioreactor Using Enviro-Economic and Power Pinch Analyses for Sustainable Climate Change Adaption

1
Deptartment of Environmental Science and Engineering, College of Engineering, Center for Environmental Studies, Kyung Hee University, Seocheon-dong 1, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Korea
2
Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Soltofts Plads 229, 2800 Kgs. Lyngby, Denmark
*
Authors to whom correspondence should be addressed.
The first and second authors contributed equally to this paper.
Received: 31 October 2018 / Revised: 5 December 2018 / Accepted: 11 December 2018 / Published: 22 December 2018
(This article belongs to the Special Issue Sustainable Wastewater Treatment Systems)
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Abstract

This study proposed an optimal hybrid renewable energy system (HRES) to sustainably meet the dynamic electricity demand of a membrane bioreactor. The model-based HRES consists of solar photovoltaic panels, wind turbines, and battery banks with grid connectivity. Three scenarios, 101 sub-scenarios, and three management cases were defined to optimally design the system using a novel dual-scale optimization approach. At the system scale, the power-pinch analysis was applied to minimize both the size of components and the outsourced needed electricity (NE) from Vietnam’s electrical grid. At a local-scale, economic and environmental models were integrated, and the system was graphically optimized using a novel objective function, combined enviro-economic costs (CEECs). The results showed that the optimal CEECs were $850,710/year, $1,030,628/year, and $1,693,476/year for the management cases under good, moderate, and unhealthy air qualities, respectively. The smallest CEEC was obtained when 47% of the demand load of the membrane bioreactor was met using the HRES and the rest was supplied by the grid, resulting in 6,800,769 kg/year of CO2 emissions. View Full-Text
Keywords: climate change; enviro-economic analysis; membrane bioreactor; optimization model; power pinch analysis; renewable energy climate change; enviro-economic analysis; membrane bioreactor; optimization model; power pinch analysis; renewable energy
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Hoang, T.-V.; Ifaei, P.; Nam, K.; Rashidi, J.; Hwangbo, S.; Oh, J.-M.; Yoo, C. Optimal Management of a Hybrid Renewable Energy System Coupled with a Membrane Bioreactor Using Enviro-Economic and Power Pinch Analyses for Sustainable Climate Change Adaption. Sustainability 2019, 11, 66.

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