REMOVAL OF REACTIVE DYES USING DIFFERENT COAGULANTS FOR TEXTILE WASTEWATER

Effluents of large variety of industries usually contain important quantities of dyes. The discharge of these colored compounds in the environment causes considerable non-aesthetic pollution and serious health-risk factors. Since conventional wastewater treatment plants cannot degrade the majority of these pollutants, powerful methods for the decontamination of dyes wastewaters have received increasing attention over the past decade. In this report a general review of efficient coagulation technology is developed to decolorize and/or degrade dyeing effluents for environmental protection. The effect of coagulant dosage and pH of wastewater on the color removal was examined, and the % of color removal results treated by different doses of coagulants like alum, ferric chlorite and ferrous sulphate at constant contact duration (4 hours), optimum pH from 6-8 using more coagulant doses and room temperature.Color removal percentage reduction (maximum) corresponds to 75.0 % to 85.0% , on reactive dyes The efficiency of color removal increased with increasing coagulant dose.