Changes in water quality in the Owabi water treatment plant in Ghana
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Date
2014-09-11
Journal Title
Journal ISSN
Volume Title
Publisher
Springerlink.com
Abstract
The study was conducted on the status of the
quality of water from the Owabi water treatment plant that
supplies drinking water to Kumasi, a major city in Ghana,
to ascertain the change in quality of water from source to
point-of-use. Physico-chemical, bacteriological water
quality parameters and trace metal concentration of water
samples from five different treatment points from the
Owabi water treatment plant were investigated. The raw
water was moderately hard with high turbidity and colour
that exceeds the WHO guideline limits. Nutrient concentrations
were of the following order: NH3\NO2
-\-
NO3
-\PO4
3-\SO4
2- and were all below WHO
permissible level for drinking water in all the samples at
different stages of treatment. Trace metal concentrations of
the reservoir were all below WHO limit except chromium
(0.06 mg/L) and copper (0.24 mg/L). The bacteriological
study showed that the raw water had total coliform
(1,766 cfu/100 mL) and faecal coliform (257 cfu/100 mL)
that exceeded the WHO standard limits, rendering it unsafe
for domestic purposes without treatment. Colour showed
strong positive correlation with turbidity (r = 0.730), TSS
(r C 0.922) and alkalinity (0.564) significant at p\0.01.
The quality of the treated water indicates that colour, turbidity,
Cr and Cu levels reduced and fall within the WHO
permissible limit for drinking water. Treatment process at
the water treatment plant is adjudged to be good.
Description
An article published by Springer Berlin Heidelberg and also available at DOI 10.1007/s13201-014-0232-4
Keywords
Water quality, Treatment process, Owabi, Bacteriological, Physico-chemical
Citation
Springerlink.com., Appl Water Sci (2017) 7:175–186 DOI 10.1007/s13201-014-0232-4