کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4484778 1623121 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of pathogen concentrations on removal of Cryptosporidium and Giardia by conventional drinking water treatment
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Effect of pathogen concentrations on removal of Cryptosporidium and Giardia by conventional drinking water treatment
چکیده انگلیسی

The presence of waterborne enteric pathogens in municipal water supplies contributes risk to public health. To evaluate the removal of these pathogens in drinking water treatment processes, previous researchers have spiked raw waters with up to 106 pathogens/L in order to reliably detect the pathogens in treated water. These spike doses are 6–8 orders of magnitude higher than pathogen concentrations routinely observed in practice. In the present study, experiments were conducted with different sampling methods (i.e., grab versus continuous sampling) and initial pathogen concentrations ranging from 101 to 106 pathogens/L. Results showed that Cryptosporidium oocyst and Giardia cyst removal across conventional treatment were dependent on initial pathogen concentrations, with lower pathogen removals observed when lower initial pathogen spike doses were used. In addition, higher raw water turbidity appeared to result in higher log removal for both Cryptosporidium oocysts and Giardia cysts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 42, Issues 10–11, May 2008, Pages 2678–2690
نویسندگان
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