Ayka Addis Textile Wastewater Treatment By The Fentons Reagent

Treatment of wastewater is one of the biggest challenges faced by textile manufacturers. One of therntextile industries in Addis Ababa at Alem Gena, Ayka addis textile and investment group plc, isrnexperiencing high concentration of COD and color in the final effluent, due to the absence ofrnappropriate treatment facility, as a result of this the effluent wastewater exceeds the standardrndischarge limits.rnThe use of conventional textile wastewater treatment processes becomes drastically challenged tornenvironmental engineers with increasing more and more restrictive effluent quality by waterrnauthorities. Conventional treatment such as biological treatment discharges will no longer berntolerated as 53 % of 87 colors are identified as non-biodegradable.rnThe purpose of this study was to investigate the suitability of using Fenton’s reagent for treatmentrnof Ayka Addis textile effluent wastewater and reduction of COD and color from the wastewater.rnThe oxidation experiments was carried out using Fenton’s reagent (hydrogen peroxide (H2O2) andrnferrous sulphate (FeSO4.7H2O)), and to adjust the pH of the wastewater sample hydrochloric acidrn(HCl) and sodium hydroxide (NaOH) were used.rnIn this work, optimum conditions such pH, reaction time and stirrer speed on COD and colorrnremoval efficiency were examined and after determination of the appropriate experimentalrnconditions, the optimum dosages of Fenton’s reagent were determined, at the optimal treatmentrnconditions and dosages a satisfactory results were obtained.rnIt is found that the tested Ayka Addis textile wastewater revealed high susceptibility to treatmentrnusing a combined action of ferrous salts and hydrogen peroxide. The main characters of thernwastewater, such as color and chemical oxygen demand (COD) were reduced by considerablernamount. The result of this investigation shows a marked increase in degradation of pollutants byrnFenton’s reagent oxidation.rnKeywords: Fenton’s reagent, textile wastewater treatment, advanced oxidation process

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