title: Treatment of cotton textile wastewater using lime and ferrous sulfate.
abstract: This technical note summarizes the results of a textile wastewater treatment process aiming at the destruction of the wastewater's color by means of coagulation/flocculation techniques using ferrous sulfate and/or lime. All the experiments were run in a pilot plant that simulated an actual industrial wastewater treatment plant. Treatment with lime alone proved to be very effective in removing the color (70-90%) and part of the COD (50-60%) from the textile wastewater. Moreover, the treatment with ferrous sulfate regulating the pH in the range 9.0+/-0.5 using lime was equally effective. Finally, the treatment with lime in the presence of increasing doses of ferrous sulfate was tested successfully, however; it proved to be very costly mainly due to the massive production of solids that precipitated.
authors.affiliation: Department of Environmental Engineering, Demokritos University of Thrace, Xanthi GR-67100, Greece. dgeorgio@env.duth.gr
authors.forename: D
authors.initials: D
authors.lastname: Georgiou
authors.forename: A
authors.initials: A
authors.lastname: Aivazidis
authors.forename: J
authors.initials: J
authors.lastname: Hatiras
authors.forename: K
authors.initials: K
authors.lastname: Gimouhopoulos
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D032561:Cotton Fiber; D005160:Facility Design and Construction; D005296:Ferrous Compounds / Q000737:chemistry*; D005427:Flocculation; D010087:Oxides / Q000737:chemistry*; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D017610:Calcium Compounds; D004396:Coloring Agents; D005296:Ferrous Compounds; D010087:Oxides; C020748:ferrous sulfate; C016538:lime