THE USE OF GRADED LOCAL SAND IN SLOW SAND FILTRATION
THE USE OF GRADED LOCAL SAND IN SLOW SAND FILTRATION
No Thumbnail Available
Date
1985-12
Authors
BELLO, MOHAMMED
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This work was carried out to determine the
efficiency of slow sand filtration. Graded sand
obtained using BS Sieve Numbers 25, 36, 72, 100 and
200 and another obtained using BS Sieve number 14
constructed locally were used.
Influent and effluent samples were analysed
at intervals for pH, turbidity and bacteriology
(Coliform test), so as to determine the filter
efficiency.
The media obtained using BS set of sieves
produced effluent of about 90% removal in coliform,
75% removal in Turbidity and an insignificant change
in pH, where as that obtained using BS sieve No, 14
gave an effluent of about 80% removal in coliform,
25% removal in Turbidity and an insignificant change
in pH, In the absence of a total coliform removal,
disinfection as a measure of safety should be
employed
Description
A THESIS SUBMITTED TO THE POSTGRADUATE
SCHOOL AHMADU BELLO UNIVERSITY, IN PARTIAL
FULFILLMENT OF THE REQUIREMENTS FOR THE
DEGREE OF
MASTER OF SCIENCE (WATER RESOURCES
AND ENVIRONMENTAL ENGINEERING.
FACULTY OF ENGINEERING
AHMADU BELLO UNIVERSITY, ZARIA.
DECEMBER, 1985
Keywords
GRADED,, LOCAL SAND,, SLOW SAND,, FILTRATION