This powerpoint presentation begins by providing a brief overview of riverbank filtration, and the Manchester, New Hampshire, Water Works current and proposed water supply. The project goal was to assess riverbank filtration as a viable treatment and
pretreatment option in terms of particulate, organic
precursors and microbiological removal capabilities
expressed in log removal credits for the city of
Manchester. Project tasks included:
background sampling to determine distinguishing water quality
differences between background groundwater and river water;
assess the travel time for river water to reach the RBF well and
quantify the contribution of river water and groundwater to the
RBF extraction water; and,
estimate steady state performance. Conclusions indicate that:
both groundwater dilution and subsurface filtration are
important removal processes;
the relative importance of subsurface filtration may be a
function of RBF site and especially travel time/distance;
excellent removals were observed;
>2 log removal of bacteria, viruses and ASFB;
possible to reduce available adsorption sites for organic
carbon molecules with time under continuous operation; and,
elevated salt concentrations resulted in problematic Fe
and Mn issues. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 11 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 37 |
| Published : | 11/01/2009 |
