کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10236200 | 45140 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of ammonia, iron and manganese from groundwaters of northern Croatia-pilot plant studies
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Removal of ammonia, iron and manganese from groundwaters of northern Croatia-pilot plant studies Removal of ammonia, iron and manganese from groundwaters of northern Croatia-pilot plant studies](/preview/png/10236200.png)
چکیده انگلیسی
The removal of iron, manganese and ammonia from groundwater originating from four different locations in northern Croatia was studied. Four pilot plants, mainly differing in their aeration systems and operation pressures, have been used. Quartz sand, coated with a naturally formed layer of MnO2 and a biofilm containing micro-organisms, were used as filter media. The bacteria of the genus Siderocapsa, as well as the bacteria of the genus Nitrosomonas and Nitrobacter were identified as taking part in the removal of iron and manganese, and of ammonia, respectively. It was demonstrated that a well-established bio-filter mass from one water treatment plant is applicable in other plants. Removal of iron, manganese and ammonia from groundwater was achieved by single-step filtration, for which an adaptation period of 3-4 weeks was required. The filtration rates were as high as 22-24Â m/h. Under optimal operating conditions, ammonium is oxidized biologically to nitrates and no nitrites appear in the effluent. The treatability factors k and n, which characterize the processes in packed bed bioreactors, were determined in this pilot plant study as well. They indicated that the simultaneous removal of iron, manganese and ammonium involves processes having different mechanisms and kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 40, Issue 1, January 2005, Pages 327-335
Journal: Process Biochemistry - Volume 40, Issue 1, January 2005, Pages 327-335
نویسندگان
Tamara Å tembal, Marinko MarkiÄ, NataÅ¡a RibiÄiÄ, Felicita BriÅ¡ki, Laszlo Sipos,