This powerpoint presentation provides a brief overview of the Cleveland Water Division (CWD), and the problem it was having with: low Cl<sub>2</sub> residuals in a portion of the
transmission mains; suspected biofilm issues;
distribution system model not suitable for
this arrangement,
water age unknown for this small area; and,
low flow demands. The approach used included:
fluoride tracer study;
shut off F- feed at Crown and Morgan Water Treatment Plants (WTPs),
maintain at Baldwin WTP;
sample strategically;
control the variables;
draw conclusions from data; and,
pipe section sampling considered, but
shelved due to cost. Conclusions were that: Independence Pump Station will not put water
into Brecksville system if the bleeds are open;
with bleeders open, 3rd high pushes water back
towards Independence; water from Independence then flows towards Parma;
Chlorine Residuals will not increase in Brecksville
system as long as bleeders are open as they were in
the study;
chlorine residual in 3rd high service near Brecksville is
low;
a biofilm is quite likely since there has been low
chlorine in system for some time;
open or closed, bleeders will cause water quality issues; and,
CWD will expend capital dollars to address. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 22 |
| Published : | 11/01/2007 |
