Acid Violet 17

These dyes are normally resistant toaerobic biodegradation and do not removeby usual biological treatment processes .Dye decreases Sunlight penetration intowater resources, so it preventsphotosynthesis of aquatic plants . Allergies, Dermatitis, Skin irritation,cancers are consequences of dye in water  So colored wastewaters should bepurified before discharging to environment . Several methods have developed forremoval of these compounds from coloredwastewaters for instance biologicaltreatment, coagulation and flocculation,treatment by ozone, chemical oxidation,membrane filtration, Ion Exchange,photocatalytic decomposition andadsorption