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Textile industry production of a wide range of polluting dye waste is considered one threatening polluting water industry. The accelerated development of textile industries is enhancing higher rate of water pollution in the environment. A treatment procedure through a bench scale model and treatability study was developed for the industrial wastewater streams of the industry to study the analysis of waste discharges and investigate the most appropriate treatment techniques. The main objectives of this study to management and control of liquid and solid wastes in the industry as well as find a sustainable solution for the textile industrial wastewater in order to comply with the National Regulatory Standards governed by the ministerial decree (44/2000) for wastewater discharge into public sewage network. The results of the analysis indicated that the wastewater is characterized by its high temperature, COD and relatively high alkalinity. COD values ranged from 993 to 1606 mg/l with an average value of 1047 mg/l depending upon the on-going operations. Corresponding BOD values varied from 235 to 600 mg/l with an average value of 422 mg/l. Oil & grease concentrations, of more than 90% of the samples exceeded the consent standards. In general all examined samples were not complying with the National Regulatory Standards governed by the ministerial decree (44/2000) for wastewater discharge into public sewage network.Accordingly, treatment procedure through a bench scale model and treatability study was developed for the industrial wastewater streams of the industry to study the analysis of waste discharges and investigate the most appropriate treatment techniques using the proposed stages of treatment includes primary treatment (plain settling), chemical treatment, and biological treatment. As results from the treatability study, the most appropriate treatment techniques were conducted by chemical coagulation using ferric chloride and lime followed by sedimentation brings the wastewater quality to the acceptable limits. The results obtained, the use of Ferric Chloride aided with Lime is the highly effective dose to reduce COD, BOD, TTP, TSS, and O&G level by almost 57%, 64%, 33%, 14.5%, and 8.7% respectively. The quality of the treated effluent is complying the regulatory limits for discharging industrial effluent to public sewer. As a conclusion, from the study, it is concluded that the physico-chemical treatment process is the most reliable alternative treatment method for this kind of industry.
Textile Industry, Biological Treatment, Chemical Treatment, Industrial Wastewater Treatment, Cleaner Production.
Textile Industry, Biological Treatment, Chemical Treatment, Industrial Wastewater Treatment, Cleaner Production.
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