Usability for Agricultural Irrigation of Domestic Wastewater Treatment Plant Effluents

In this study, the effluent of domestic wastewater treatment plant was investigated to reusability for agricultural irrigation, instead of discharging to the receiving environment. In the study, biological wastewater treatment plant effluent, which was designed for the wastewater resulting from the use of the facility employees for domestic purposes and operated with a sequencing batch reactor principle, was used as material. The suitability of domestic wastewater treated through biological treatment for agricultural irrigation was evaluated within the scopes of Water Pollution Control Regulation and The Technical Procedure Communique of Wastewater Treatment Plants. According to the analysis results of the treatment plant wastewater, removal efficiencies for BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand) and suspended solid (SS) were 98%, 97% and 95% respectively and when evaluated these values within the scope of Water Pollution Control Regulation Table 21: Discharge Standards for Domestic Wastewaters to a Receiving Environment, it has been determined that they were below the discharge standards. When the analysis results for turbidity, electroconductivity and sodium parameters were evaluated within the scope of The Technical Procedure Communique of Wastewater Treatment Plants, Appendix 7, it was seemed that these values did not comply with the standards and the use of the effluent for agricultural irrigation was not possible.