کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4481097 1623084 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of advanced oxidation processes on the micropollutants and the effluent organic matter contained in municipal wastewater previously treated by three different secondary methods
ترجمه فارسی عنوان
اثر فرآیندهای اکسیداسیون پیشرفته در خاک های خرد شده و مواد آلی پساب موجود در پساب های شهری که قبلا با استفاده از سه روش متداول ثانویه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


• 5 AOPs were applied on 3 different secondary WWTP effluents.
• Matrix-related comparison for 6 MPs and the EfOM content was performed.
• UVC-based processes presented better MP and EfOM removal kinetics.
• AOS change was well correlated with the MP degradation over time.
• A mechanistic interpretation for the COD & TOC reduction is suggested.

In this study, wastewater from the output of three different secondary treatment facilities (Activated Sludge, Moving Bed Bioreactor and Coagulation-Flocculation) present in the municipal wastewater treatment plant of Vidy, Lausanne (Switzerland), was further treated with various oxidation processes (UV, UV/H2O2, solar irradiation, Fenton, solar photo-Fenton), at laboratory scale. For this assessment, 6 organic micropollutants in agreement with the new environmental legislation requirements in Switzerland were selected (Carbamazepine, Clarithromycin, Diclofenac, Metoprolol, Benzotriazole, Mecoprop) and monitored throughout the treatment. Also, the overall removal of the organic load was assessed. After each secondary treatment, the efficiency of the AOPs increased in the following order: Coagulation-Flocculation < Activated Sludge < Moving Bed Bioreactor, in almost all cases. From the different combinations tested, municipal wastewater subjected to biological treatment followed by UV/H2O2 resulted in the highest elimination levels. Wastewater previously treated by physicochemical treatment demonstrated considerably inhibited micropollutant degradation rates. The degradation kinetics were determined, yielding: k (UV) < k (UV/H2O2) and k (Fenton) < k (solar irradiation) < k (photo-Fenton). Finally, the evolution of global pollution parameters (COD & TOC elimination) was followed and the degradation pathways for the effluent organic matter are discussed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 84, 1 November 2015, Pages 295–306
نویسندگان
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