Abstract
Abstract There are 101 municipal wastewater treatment plants in Thailand supplied with electricity and cannot collect wastewater treatment fees. Alternative sources of energy for municipal wastewater treatment would reduce the electricity costs and future fossil energy uses. The Nonthaburi wastewater treatment plant (WWTP) is located in the Northwest of Bangkok and selected due to its available data. The solar energy source is applied to the Nonthaburi WWTP due to the light intensity and the area to install. By comparing to the wind and the biogas sources, the wind speed and the sludge production are not sufficient, respectively. Besides the estimated installation cost of the solar-cell panels among three companies, the NPV of 25 years and the IRR of three percent rate, the area required for installation is an affecting factor for the plant consideration.
Highlights
Environmental issues have become a matter of serious concern in global politics [1,2]
The process types are grouping into 5 major categories: Aerated Lagoons (AL), Activated Sludge (AS), Rotating Biological Contactors (RBC), Stabilization Ponds (SP), and Artificial Ponds (AP)
The costs of solar panel installation and maintenance from Company C are recommended to the Nonthaburi wastewater treatment plant (WWTP)
Summary
Environmental issues have become a matter of serious concern in global politics [1,2]. The main energy used in wastewater treatment systems in Thailand is electricity. As a result of the increase in water usage in municipal areas, the cost of electricity in municipal wastewater treatment plants has increased. Some areas have issued policies to collect the wastewater treatment fee which has not yet come to a concrete conclusion due to many organizations and government agencies involved. Reducing electricity costs is an option for budget management. The use of renewable energy in wastewater treatment plants is an alternative to current and future scenarios. The purpose of this work is to investigate the electricity cost associated with municipal wastewater treatment systems and the potential renewable energy sources for use in the systems
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