The Experimental Integration of Photovoltaic Systems With Aeration Tanks in Wastewater Treatment

Abstract This paper presents a novel approach to enhancing energy efficiency in wastewater treatment plants (WWTPs) by integrating solar photovoltaic (PV) technology. Recognizing that WWTPs are major energy consumers, largely due to their aeration tanks, this study explores the potential of PV panels installed above these tanks. This innovative setup serves a dual purpose: the PV panels act as insulation, particularly in colder months, reducing heating energy needs, and the generated electricity powers the plant’s turbomachinery, potentially cutting a significant portion of energy demand. This strategy aims to reduce operational costs and support environmental sustainability. A prototype system was built to empirically test this hypothesis, focusing on the thermal interaction between PV modules and aeration tanks during winter and assessing energy savings and efficiency gains. Preliminary thermal models, created using MATLAB, guided the prototype’s design and implementation. The results indicated a 0.56% increase in PV panel efficiency due to the cooling effect of the aeration tanks and an overall improvement in the WWTP’s energy efficiency. These findings confirm the viability and advantages of integrating renewable energy into wastewater treatment. Future research will investigate the impact of this PV integration on water quality within the aeration tanks, which is crucial for determining the treatment process’s effectiveness under altered environmental conditions.