کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1738461 1521624 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Behavior of natural radionuclides in wastewater treatment plants
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Behavior of natural radionuclides in wastewater treatment plants
چکیده انگلیسی

56 samples, including influent, primary effluent, secondary effluent and final effluent wastewater from two Spanish municipal wastewater treatment plants (WWTPs), were analyzed to assess both the occurrence and behavior of natural radioactivity during 12 sampling campaigns carried out over the period 2007–2010. Influent and final effluent wastewaters were sampled by taking into account the hydraulic residence time within the WWTP. A wide range of gross alpha activities (15–129 mBq/L) and gross beta activities (477–983 mBq/L) in liquid samples were obtained. A correlation analysis between radioactivity in liquid samples and the performance characteristics of the WWTPs was performed. The results in liquid samples showed that gross beta activities were not influenced by treatment in the studied WWTPs. However, gross alpha activities behave differently and an increase was detected in the effluent values compared with influent wastewater. This behavior was due to the increase in the total dissolved uranium produced during secondary treatment. The results indicate that the radiological characteristics of the effluents do not present a significant radiological risk and make them suitable for future applications.


► Liquids from WWTPs were analyzed to know the behavior of natural radionuclides.
► Gross beta activities were not influenced by treatment in the studied WWTPs.
► Increase in gross alpha activity was observed due to uranium desorption/solubilisation.
► Correlation between gross alpha activity and the chemical oxygen demand was found

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 109, July 2012, Pages 76–83
نویسندگان
, , , , , , , ,