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Abstract
Textile mills are major consumers of water and consequently one of the largest groups of industries causing intense water pollution. The effluent contains wide range of chemicals of varying kinds. Reactive dyes are not responsive to biodegradation. The current treatment of dye waste in textile industries is focused on the removal of colour along with aesthetic issues. Several physico-chemical and biological methods are available for the treatment of textile wastewater. Unfortunately, these processes have high operating cost and are of limited applicability.
Strong colour is another important component of textile wastewater. If colour is not removed, this may cause disturbance to the ecological system of the receiving waters. Thus, many processes have been proposed over the years and are currently employed to destroy toxic chemicals discharged along with textile wastewater.
One of the new methods of treatment of wastewater containing dyes is Advanced Oxidation Processes (AOP) involving hydroxyl radicals, ●OH, and have gained increasing interest in treatment of industrial and drinking wastewater to remove organic and inorganic contaminants. This method was successfully applied to the decomposition of numerous organic substances, including anthraquinonic and reactive dyes.