Abstract
Our modernized world needs colourful cloths. As per the requirements we need textile industries to fulfil the demands. These industries need a huge quantity of freshwater for dyeing. As a result, a large amount of wastewater is released. The released wastewater starts to contaminate natural sources and leads to several serious environmental health problems. Coagulation is one of the techniques which is used to treat all these wastewaters of various industries. In this paper, a composite coagulant of Polyaluminium chloride (PACl) and polyamine is used to remove colour of the textile wastewater. The optimum coagulant dosage and pH values were determined by comparing colour removal efficiency. It was found that 1:1 ratio gives the optimum result at pH 5 for the optimum dosage of 600 mg/L with the 95% decolourisation. Finally, the treatment of the actual textile wastewater has shown that PACl-polyamine is an effective composite coagulant.
Published Version
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