Performance Evaluation of Chemical Coagulation and Electro-Fenton Combined Processes Treating Real Pharmaceutical Wastewater

سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 182

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شناسه ملی سند علمی:

JR_JHEHP-8-1_007

تاریخ نمایه سازی: 18 بهمن 1401

چکیده مقاله:

Background: Pharmaceutical wastewater mainly contains high levels of organic matter. In order to produce a suitable wastewater for discharge into the municipal sewage, chemical and electrochemical methods have been studied. The aim of this study was to evaluate the efficiency of chemical coagulation/electro-Fenton combination process in chemical oxygen demand (COD) reduction of pharmaceutical wastewater. Methods: The effect of Poly aluminum chloride (PAC) concentration ۲۵-۳۰۰ mg/L and pH of ۳-۷-۱۰ were investigated. The effluent of chemical coagulation stage was transferred to the electro-Fenton stage. Fur thur, the effect of H۲O۲ concentration ۱۰۰ - ۴۰۰۰ mg/L, contact time of ۱۵-۱۲۰ min, voltage of ۱۰-۳۰ v and pH of ۳-۱۰ were investigated. Results:The results showed that the highest removal rate of COD was ۹۳.۵% in the optimal conditions at coagulant dose ۲۰۰ mg/L and pH of ۷ for the coagulation process, and at concentration of ۱۰۰ mg/L hydrogen peroxide, the voltage of ۲۰, pH of ۳ and contact time of ۳۰ min for the electro-Fenton process (EFP). The results showed that chemical and electrochemical processes are effective methods for the  pharmaceutical wastewater treatment. Conclusion: It is generally concluded that combined processes are more effective than the coagulation process alone in removing organic compounds from pharmaceutical wastewater.

نویسندگان

Shima Goodarzi

Department of Environmental Health, Faculty of Health, Lorestan University of Medical Sciences, Khorramabad, Iran.

Ghodratollah Shams Khorramabadi

Department of Environmental Health, Faculty of Health, Lorestan University of Medical Sciences, Khorramabad, Iran.

Mohammad Amin Karami

Department of Environmental Health, Faculty of Health, Lorestan University of Medical Sciences, Khorramabad, Iran.

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