Mustafa Kemal University Journal of Agricultural Sciences, cilt.24, ss.249-256, 2019 (Hakemli Dergi)
Aims: The purpose of this study is to evaluate whether the effluent quality of outlet water at Van Province Urban Treatment Facility outlet water is suitable for use in irrigation within the framework of relevant legislation. Methods and Results: In the study, the analysis was carried out at treated waste water samples the months representing the irrigation season (June, July, August and September). In the analysis; pH, EC, cations (Ca, Mg, Na, and K), anions (CO3, HCO3, SO4, and Cl), chemical and biological oxygen needs, suspended solids, total N and P, fecal coliform, micro element and heavy metal contents (B, Fe, Cu, Mn, Zn, Pb, Cd, Cr, and Ni) were determined. In addition, % Na, sodium adsorption rate, permanent sodium carbonate and Langelier saturation index values were calculated. It has been determined that the results did not exceed the limit values in the regulation and can be used safely in short term irrigation. Conclusions: According to the obtained results of the evaluation, the limit values id not exceed based on the ’’Turkey Wastewater Treatment Facility Technical Procedures Communique’’ and It has been observed that the use of treated wastewater in irrigation will not pose a risk. Significance and Impact of the Study: In recent years, it is important to use treated wastewater, which is an alternative water source, for irrigation in order to preserve and reduce the pressure on existing clean water resources. In addition, thanks to the nutrients it contains in the treated wastewater, it will reduce the amount of chemical input in agricultural production.