Technical And Economic Study of Energy Production from Biogas Produced in Wastewater Treatment Plants (Case Study: Water and Wastewater Company of Mashhad)

Barati, Javad; Rasoulzadeh, Maryam; Sedqiyan, Alireza; Saeedi, Sudabeh; Sami, Mahshid; Rajabzadeh, Nahid

doi:10.22034/jrenew.2025.222654

Technical And Economic Study of Energy Production from Biogas Produced in Wastewater Treatment Plants (Case Study: Water and Wastewater Company of Mashhad)

Document Type : Original Article

Authors

Javad Barati ¹

Maryam Rasoulzadeh ²

Alireza sedqiyan ³

sudabeh saeedi ⁴

Mahshid Sami ⁵

Nahid Rajabzadeh ⁶

¹ Assistant Professor, Economics Research Department, Academic Center for Education, Culture and Research (ACECR), Mashhad, Iran.

² PHD Student of Economics, Economics Research Department, Academic Center for Education, Culture and Research (ACECR), Mashhad, Iran.

³ Master of Civil Engineering, Director of Energy Office of Mashhad Water and Wastewater Company, Mashhad, Iran.

⁴ Master of Civil Engineering, CEO of Biodynamic Process Company, Mashhad, Iran.

⁵ Master of Economics, Ferdowsi University of Mashhad, Mashhad, Iran

⁶ PhD in Economics, Expert of Water and Wastewater Company of Mashhad, Mashhad, Iran.

https://doi.org/10.22034/jrenew.2025.222654

Abstract

Energy production is one of the most important current needs of the world, the reduction of fossil fuel sources and energy imbalance has doubled the need for renewable energy production. In this research, the biogas obtained from urban sewage sludge, the estimation and the amount of electricity produced was calculated and according to the price of renewable electricity and the costs and revenues of implementing such a project, its calculations were implemented in Excel. The user (or decision-maker or investor), by entering the necessary specifications, sees the amount of electricity produced and the amount of income from it in the output, and then calculates the amount of fixed cost and annual variable cost and enters it. In Excel, in the output, economic indicators such as the producer price of each kilowatt, the internal rate of return (IRR), the investment return period, and the project's net present value (NPV) can be seen. The example of this research is one of the wastewater treatment plants in Mashhad, the results showed that the cost of electricity in this way was equal to 36318 Rials per kilowatt, which is compared to the average purchase rate of renewable electricity in 1402, which is equal to 21800 Rials.; The economic justification of the implementation of such a project will be destroyed for the investor, so suggestions in this field were presented in the research.

Keywords

Water and sewage

biogas

renewable energy

Mashhad

Subjects

Renewable Energy

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