This powerpoint presentation begins by providing a brief overview of riverbank filtration (RBF), and presents the
framework for assessing the feasibility of
RBF that includes the following four step methodology developed at UNESCO-IHE:
hydraulic simulation using MODFLOW;
determination of share of bank filtrate and local
groundwater using NASRI Bank Filtration Simulator;
prediction of the water quality using
algorithms/guidelines, developed based on
literature review; and,
comparison of the capital and O&M costs of RBF
system with that of existing conventional water
treatment system. Case studies in three cities of Malawi are presented. Conclusions were that: RBF is a robust natural water treatment system which
has high potential for application in developing
countries;
a four-step methodology was developed for assessing
feasibility of RBF for water treatment;
spacing between the wells and distance of the wells
from the bank can be varied to get the required water
quality and quantity from the wells for given
allowable drawdown;
a guideline for estimation of water quality of RBF
system for given travel time and travel distance was
developed based on literature review; and,
RBF is feasible in selected cities of Malawi, from
Hydraulic, Water Quality as well as Cost considerations. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 700 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 11/01/2007 |
