TREATMENT OF WASTEWATER CONTAMINATED WITH DYES USING CONVENTIONAL AND NATURAL COAGULANTS IN SINGLE AND TERNARY SYSTEMS

In this investigation the effect of using natural coagulants, Aloe Vera, Arabic Gum, Calcium gene and orange peels with alum Al2 (SO4)3 and compared with alum alone was examined to remove three reactive dyes: Reactive Blue (RB), Reactive Red (RR) and Reactive Yellow (RY) from simulated textile wastewater in single and ternary systems utilizing coagulation process. Batch tests were achieved to study the impacts of pH, dosage and initial concentration onto coagulation process. Dose of natural coagulants and alum were used (5 mg/L). After treatment, the outcomes mirrored that the natural coagulants have a high removal efficiency when they blended in with alum and The results showed that Arabic gum is not suitable for dye removal and the use of Aloe Vera as coagulant aid with alum were better compared with the utilization of alum alone. The utilizing of 50% Alum + 50% Aloe Vera gave removal efficiencies 92%, 93 % and83% for RB, RR and RY respectively compared with 92%, 89% and 78% for RB, RR and RY respectively using alum alone, this decreased the alum dosage from 5mg/l to 2.5mg/l. This procedure will consider provision cost and decrease health danger related with utilizing of alum.