کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4486872 1317003 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ammonium removal from digested sludge liquors using ion exchange
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Ammonium removal from digested sludge liquors using ion exchange
چکیده انگلیسی

Liquors arising from the dewatering of digested sludge typically contain ammonium levels in the range 200–700 mg l−1 NH4+-N. These liquors are frequently recycled to the head of the wastewater treatment works (WwTW) untreated and can constitute >25% of the total nitrogen load entering the works at inlet. This paper investigates the use of a clay-based material, MesoLite, as an ion exchange medium for ammonium removal from recycle streams. Pilot-scale studies performed at Didcot WwTW, part of the Thames Water wastewater treatment network, indicate that MesoLite is highly selective for the ammonium ion. Results show that >95% of ammonium was removed from belt press liquors with an initial ammonium nitrogen concentration >600 mg l−1, with an overall ion exchange capacity >51 g NH4+-N kg−1 medium and this resulted in an operating capacity in the range 27–36 g NH4+-N kg−1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 41, Issue 2, January 2007, Pages 433–439
نویسندگان
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