Treatment of Textile Wastewater Using a Combined Coagulation and DAF Processes, Iran, 2016
محل انتشار: مجله آرشیو علوم بهداشتی، دوره: 6، شماره: 3
سال انتشار: 1396
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 382
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شناسه ملی سند علمی:
JR_AHS-6-3_001
تاریخ نمایه سازی: 19 آبان 1397
چکیده مقاله:
Background & Aims of the Study: There are three different types of fibers used in themanufacture of various textile products: cellulose fibers, protein fibers and synthetic fibers.Textile wastewater discharge into the environment leads to irreparable damages. The mainpurpose of this study was treatment of textile wastewater, using a combined coagulation anddissolved air flotation (DAF) processes, Iran in 2016.Materials and Methods: This study was an empirical-lab study which the Jar tests and DAFwere used in laboratory scale. After determination of the optimal condition of pH and theoptimum of concentration of poly-aluminum chloride by Jar test, the effect of the effectiveparameters including the concentration of the coagulant (10, 20, 30, 40, 60 mg/L), coagulationtime (5, 10, 15 and 20 min), flotation time (5, 10, 15 and 20 sec), saturation pressure ( 3, 3.5, 4and 4,5 atm) and turbidity ( 10, 20 , 30, 40, 60 NTU) on the removal efficiency of COD, BOD5and TSS by DAF were studied.Results: Results of this study showed that the DAF process can treatment COD, BOD5 and TSSup to85.7%, 80.68% and 95.6%, respectively. The appropriate condition was as follows: pH=6,initial concentration of aniline= 200 mg/L, flocculation time = 10 min, flotation time= 20 sec andthe air pressure= 4 atm. Also, this study indicates that the DAF process to conclusion requires alower dosage of poly-aluminum chloride.Conclusion: The coagulation and DAF processes can be effective to treat textile wastewaterfrom industries.
کلیدواژه ها:
Textile wastewaterIndustrial Wastewaterpolyaluminum chlorideDAFWastewater TreatmentIran
نویسندگان
Shahin Ahmadi
Department of Environmental Health, Health Promotion Research Center, School of Health, Zabol University of Medical Sciences, Zabol, Iran
Ferdos Kord Mostafapour
Department of Environmental Health, Health Promotion Research Center, School of Health, Zahedan University of MedicalSciences, Zahedan, Iran