Assessment of the role of photovoltaic systems in reducing the
In this study, the effect of supplying the energy required by a real domestic biological wastewater treatment plant from a photovoltaic (PV) system on the reduction of its
The facility now produces around 78 GWh of electricity and 82 GWh of heat, meaning the plant will be able to generate all the energy it requires for wastewater treatment, with energy to spare while reducing Vienna's annual carbon emissions by 40'000 tonnes.
Integrating renewable energy sources, biogas, and solar energy could provide up to 88% of the annual energy requirements of WWTPs. Recommendations are provided for further research considering the limited availability of integrated resources for studying the simultaneous utilization of photovoltaic and biogas systems. 1. Introduction
Strazzabosco et al. (2019) assessed the current state of solar PV systems in WWTPs and found that solar PV is primarily used in hybrid configurations with anaerobic digestion at WWTPs with flow rates greater than 1.89 × 10 4 m 3 /d. In these treatment plants, biogas meets 25%–65% of the total energy demand, and solar energy supplies 8%–30%.
At WWTPs with flow rates less than 1.89 × 10 4 m 3 /d, solar PV provides 30%–100% of the required energy and is typically used as the sole RES. On the other hand, most studies examining the applications of PV cells at WWTPs have focused on the conventional fixed-beam-supported technology.
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