بررسي ميزان حذف رنگ و كدورت به وسيله منعقدكننده هاي آهن (كلردفريك ) و آلومينيم (سولفات آلومينيم ) و پلي الكتروليت ها در فاضلاب هاي نساجي

Chemical treatment of textile wastewater by use of coagulating materials has been used as one of the most effective methods in removing dye and organic materials in wastewater. In this research, for determination of output of omitting dye and turbidity of Aluminium Sulphate (Al2SO4 - 61120) and ferric Chloride (FeCl3 - 6H2..0) coagulants and polyelectrolete coagulant aid have been used. Optimum pH and density used for each coagulant were received regarding removal of dye and turbidity. Wastewater being tested was of direct dyes group, disperse, and reactive. As a sample, alum direct dye and polyelectrolete, as the best coagulant and ferric chloride as sample of disperse wastewater had the best output considering removal of dye and turbidity. Further, alum together with lime snowed the best output considering omission of dye and turbidity for wastewater of different reactive dyes.