Productıon Of Electrıcıty From Bıogas And Hydroelectrıc Energy In Waste Water Treatment Facılıtıes


Thesis Type: Postgraduate

Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2018

Student: ASİYE GÜNAL

Consultant: İRFAN AR

Abstract:

In this study, biogas and hydroelectric power generation will be transferred to wastewater treatment plants. For this, the data of the Seyhan Wastewater Treatment Plant for 2016 have been analyzed. It has been demonstrated that the total electricity consumption of the wastewater treatment can be met by biogas and hydroelectric power. Wastewater inlet value of Seyhan Wastewater Treatment Plant was measured as 216.194 m3/day, Wastewater Output value was 210.000 m3/day. The parameters affecting the process were measured and analyzed and the parameters such as wastewater (Q), suspended solids (AKM), pH, biological oxygen demand (BOD5), chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP) , the obtained findings were evaluated and optimum operating conditions were determined. A significant portion of the wastewater is purified and electric power is generated from the biogas obtained as a result of purification. Electricity produced is also used in the plant. Establishing a hydroelectric power plant (HPP) to the facility may be planned in the following years. It has been planned to use this HPP unit for acquiring electric power benefitting from the gravitation of water before the purified water is discharged to the Seyhan watercourse. Because there is no need for a pump since the water is flowing with gravity, energy conservation is achieved. In this thesis, it is observed that the consumption of energy in Adana in the summer months has decreased and it has increased in winter. It is thought that the increase in energy consumption in autumn and winter months is due to the increase in the energy consumption in this sector in the relevant time period, since it is common in Adana. Another factor may be the increase in electricity consumption due to the early decline of air in winter. It has been observed that BOD increased according to literature data and expectancy according to organic load. Since the amount of biogas produced depends on the amount of organic pollutants, BOD was selected as benchmark instead of COD in our study. The obtained data also showed that the amount of biogas produced increased with BOD. Another important finding in the study is that the amount of biogas produced in summer decreases while it increases in winter. This can be explained by the fact that in summer the organic matter in the wastewater is degraded by the bacteria in the pipelines before reaching the temperature. Biogas production occurs at 35.5 ° C under mesophilic conditions. The above statement is real because the average temperature in summer in Adana is usually above this temperature. The working temperature in Seyhan Wastewater Treatment Plant is already 38 0C.