JOCET 2013 Vol. 1(3): 202-205 ISSN: 1793-821X
DOI: 10.7763/JOCET.2013.V1.46
Abstract—This research is concerned with studying the effect
of installing a weir on dissolved oxygen (DO) concentrations in
water at different water depths. The study was done using a
laboratory flume to be under controlled conditions; i.e constant
temperature and no pollution sources. Then a mathematical
simulation part is done – using Streeter-Phelps equation- to the
study to relate it to real life conditions and thus determine
where is the best location to install a water treatment plant on a
river. Although many studies were done on examining the effect
of hydraulic structures on air entrainment in water, bubbles
captures in water, rate of transfer of oxygen to the water, rarely
was the direct effect of hydraulic structures on dissolved oxygen
concentration values in water investigated. This study will be
investigating the effect of broad crested trapezoidal weirs on the
dissolved oxygen (DO) in water at different longitudinal stations
along the same water streamline; as well as, at different water
depths. The study was done on a flume in the hydraulics
laboratory at the American University in Cairo. It was found
that installing the weir increased the values of the DO in water
(comparing its upstream side with the downstream side) by an
average of 5.3% comparing all depths. It was also found that
installing a weir on a river will result in shortening the time the
DO takes to recover after a pollutant was dropped in a river by
39.5%.
Index Terms—Broad crested weir, dissolved oxygen, flume,
hydraulic jump, hydraulic structures.
S. A. El Baradei is with the Construction and Architectural Engineering
Department, The American University in Cairo (e-mail:
sbaradei@aucegypt.edu).
[PDF]
Cite:Sherine Ahmed El Baradei, "Saving on Energy of and Determining the Best Location of
Water Treatment Plant along Rivers Depending on the
Effect of Broad Crested Weir on Dissolved Oxygen
Concentrations in Water," Journal of Clean Energy Technologies vol. 1, no. 3, pp. 202-205, 2013.
