کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4484277 1316915 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Natural attenuation of nitrogen loading from septic effluents: Spatial and environmental controls
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Natural attenuation of nitrogen loading from septic effluents: Spatial and environmental controls
چکیده انگلیسی

We assess the role of septic systems as potential nitrogen (N) sources to coastal open water bodies. To quantify the potential role of septic tanks, we document the distribution pattern and functionality of septic tanks in McIntosh County in Georgia, USA, and examine factors governing the mitigation of septic N loading in coastal groundwater. Employing a field calibrated 2D variable-density reaction-transport model, we focus on the role of setback distance of a leaky septic source from the receiving surface waters, on transport and biogeochemical characteristics of the subsurface environment, and on leachate composition and reactivity. We conclude that the removal of bioavailable nitrogen via denitrification may be increased by increasing the septic system setback distance, in particular in brackish and saline coastal settings where sulfide produced in sulfate reduction can limit N2 production.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 44, Issue 5, March 2010, Pages 1399–1408
نویسندگان
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