This powerpoint presentation begins by providing a brief overview of point-of-use (POU) devices and NSF/ANSI 53, a recognized standard that covers
health effects specifically for POU devices, and can include lead (Pb) removal. Project objectives included the following: compare dissolved and particulate Pb removal
efficiency for diverse types of POU devices (pour-through
pitchers, tap-mounted, under-the-sink);
evaluate metal removal by pour-through pitchers (Pb,
Cu, Ni, Cr);
assess Ag leaching by pour-through pitcher filters;
measure the effect of POU filters on water quality parameters at
the effluent;
evaluate the effect of filter nitrification on the
dissolution of Pb particles trapped in the filter; and,
evaluate the efficiency and applicability of under-the-sink
POU devices to solve dissolved and particulate Pb
challenges in large buildings. Study methodology included the following 5 experiments:
tested metal removal by pour-through pitchers, with and
without additions of Pb, Cu and Cr in feed water;
tested pour-through pitchers for Pb<sub>part</sub> removal, and
measured the effect of filters on NH<sub>3</sub>-N and pH;
same as (I) but in real household using time and
without any metal addition in feed water;
compared Pb<sub>diss</sub> and Pb<sub>part</sub> removal for 3 types of
POU using a pilot (3 pitchers, 2 tap-mounted devices,
2 under-the-sink devices), and evaluated the effect of
POU filters on water quality parameters at the effluent; and,
tested the applicability (cost-efficiency) of under-the-sink
POU devices in a large building presenting high levels of
Pb<sub>diss</sub> and Pb<sub>part</sub>. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 18 |
| Published : | 11/01/2009 |
