Influencia de la dilución del sulfato de aluminio en la eficiencia de la coagulación en la potabilización del agua

Abstract

The present work pretends to evaluate the influence of the aluminum sulphate over the process of coagulation for water purification through essays with the pitcher testing equipment of turbidity, color, pH, alkalinity and temperature. It was used synthetic water and liquid aluminum sulphate as coagulant. It was developed two stages: preliminary tests to determine the speed gradients in the established retention times and finally the essays to know the aluminum sulphate behavior with established dilutions and dosages. The pH of the coagulant solution in front of its dilution has a proportional direct relation. The doses to the coagulant dilution relation presented a proportional relation, it means the major dissolution is used the major quantity of coagulant is used too. The range of dissolution that was obtained with less dosing of coagulant is between 8,4% - 10,5% because of having the higher concentration of available aqueous aluminum to agglutinate colloids. The percentages of turbidity removal and color in front of the coagulant dilution shown that with close dilution standards of 8,4% for less, medium and high turbidity is obtained the best results with turbidity removal efficiency greater than 95%.