Research Information System
7 th International Congress on Agriculture, Environment and Health, Bursa, Turkey, 30 May - 01 June 2024, pp.43-53
Environmental contamination is becoming more likely every day because of leachate's complicated structure, variable nature, and high pollutant content. The amount of leachate generally varies depending on the moisture content of the waste and the rate of precipitation falling on the landfill. The nature of the landfilled solid waste, high organic and nitrogenous substances, heavy metals, organic and inorganic salts change the properties of leachate. Leachate characterization is important for the age of the landfill and consequently for the efficiency of the treatment plant operated. In this study, it was aimed to treat solid waste leachate and reduce the alkanity value by using physicochemical methods such as coagulation-flocculation. Leachate samples were taken from Samsun province solid waste landfill. Experimental sets were established in order to determine the optimum removal efficiency in the Coagulation-Flocculation method. Three different coagulants, such as FeCl3, Al2(SO4)3.18H2O (alum), and Ca(OH)2, were selected for the coagulation process. The variables include the kind and concentration of the coagulant, pH, and stirring speed. Anionic, cationic and non-ionic flocculants were used for flocculation method. Since the leachate has a high impurity concentration, experimental studies were carried out with dilute samples with reference to the dilution ratios determined by preliminary studies. The best removal was 95,73% at pH 4 with 3 g FeCl3 coagulant and 1 mL polyelectrolyte coagulant.