الفهرس 
AbstractOnly 14 pages are availabe for public view
 |  | from | 78 |  |  |
| | | from | 78 | | |
Abstract
Riverbank filtration (RBF) is an efficient and low-cost natural alternative technology for water supply application in which surface water contaminants are removed or degraded as the infiltrating water moves from the river to the pumping wells. In this study, a full-scale RBF site (New Aswan City, Egypt) consisting of three vertical wells installed 50 m from Nile bank was studied to investigate the effectiveness of this technique under the local hydrological conditions. RBF systems are particularly well suited for providing better water quality than withdrawal directly from the Nile River to produce drinking water for New Aswan town, Aswan Governorate, Upper Egypt.
This study was carried out by collecting and analyzing samples in a monthly basis during the period of May 2010 to April 2011 from New Aswan wells in water company station, Nile River (as induced surface water), and some of ambient groundwater wells. The carried out measurements were:
- Physicochemical measurements such as turbidity, Dissolved oxygen (DO), total suspended solids (TSS), total organic carbon (TOC), Total dissolved salts (TDS), potential of hydrogen (pH). - Metals measurements such as Iron (Fe) , Manganese (Mn), Magnesium (Mg) as heavy metals and Calcium (Ca), Chlorine (Cl), Sodium (Na), Potassium K, and some inorganic compounds such as Ammonia (NH3), nitrogen dioxide (NO2), nitrate (NO3), Phosphate (PO4),Bicarbonate (HCO3), sulphate (SO4).
- Microbiological measurements such as Total Bacteria and Total Coliform.
The results of bank filtrate water were compared with those of the ambient groundwater and previous reported Nile water analysis. Chemical and bacteriological quality parameters of RBF were found to be under the allowable limits for drinking water. Moreover, bank filtration is simultaneously improved the ambient groundwater and cleaned Nile water in the study area. Result of this full-scale RBF plant showed the effectiveness of riverbank filtration as a proven treatment technique in Nile Valley with a fraction of cost comparing to conventional surface treatment plants.
Keywords: Riverbank filtration, Water quality, New Aswan Region, Nile River, Egypt.