The effects of industrial and domestic effluents on the quality of the receiving waters of Nairobi,ngong' and ruiruaka rivers.
Abstract
The effect of various pollutants on the quality of the
major river streams passing through Nairobi Province namely
Nairobi, Ngong' and Ruiruaka rivers is studied. The
investigations have been carried out over a period of one
year (Nov. 1985 to Nov. 1986) c011ecting water samp1es
from the river streams at different identified points at
regular monthly intervals. To assess and characterise the
qua1ity of the river waters, the f0110wing parameters were
monitored in the water samp1e:-
(a) Temperature
(b) Hydrogen-ion concentration
(c) Conductivity
(d) Biochemical oxygen demand
(e) Chemical oxygen demand
(f) Dissolved solids
(g) Suspended solids
(h) Chlorides
(i) Nitrates
(j) Total phosphates
In addition to the above parameters the profile of the
various elements present in the aquatic sample was monitored
with special attention to the presence of toxic elements
using X-ray fluorescence. The type of pollutant and
reaction of pollutions in all the three river streams were
identified...