Optimization of brewery wastewater with pHchanges in electrocoagulation system

سال انتشار: 1402
محل انتشار: نهمین کنگره سالانه بین المللی عمران، معماری و توسعه شهری
کد COI اختصاصی: ICSAU09_591
زبان مقاله: انگلیسی
تعداد مشاهده: 199

نویسندگان

Master's student in the field of environmental engineering (water and wastewater), Faculty of NaturalResources and Environment, Islamic Azad University, Research Sciences Branch, Tehran

Mehran Khalesi

PhD student in the field of environmental engineering (water and wastewater), Faculty of Natural Resourcesand Environment, Islamic Azad University, Research Sciences Branch, Tehran

Zeynab Moradi

Master of Fundamental particle physics Shahroud University of Technology, Shahroud, Iran

Marjan Vahedi

Master's Degree in Environmental Engineering (Water Resources), Faculty of Natural Resources andEnvironment, Islamic Azad University, Research Sciences Branch, Tehran

چکیده

Brewery wastewater is one of the most polluted industrial wastewaters in the world. In this study, theeffect of pH and retention time on the removal of TSS, BOD and COD from brewery wastewater byelectrocoagulation with iron and aluminum electrodes in acidic and alkaline conditions has beeninvestigated. For this purpose, experiments have been performed with controlled initial pH values inthe range of ۴-۱۰ and retention time of ۱۵-۴۵ minutes. The process was a batch that was performedwith ۱۰۰۰ mL of wastewater in EC cell. The electrodes is used up in the EC process with a dimensionof ۵.۳ × ۱۰ × ۰.۱ cm, respectively. Also, three types of Fe-Fe, Fe-Al and Al-Al electrodes were used inthe laboratory. The results showed that the optimal removal efficiency took place at a retention time of۴۵ minutes and a pH of ۴.۳.The amount of TSS, BOD, and COD decreased from ۲۵۴۰, ۲۸۷۰, and۱۲۴۰۰ mg/L to ۵۲۶, ۶۰۸, and ۲۶۶۶ mg/L, respectively, which had ۷۹.۳, ۷۸.۵, and ۷۸.۸% efficiency,respectively. The highest efficiency was observed in Al-Al electrodes. COD removal efficiency of۸۲.۶%, BOD ۸۰.۵% and TSS ۸۱.۱% were observed in these electrodes. PH changes and choosing theright electrode for industrial wastewater treatment are very important.

کلیدواژه ها

brewery wastewater, electrocoagulation, pH impact, retention time

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