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Physicochemical and Bacteriological Analysis of Some Selected Sites from Kebena River and Its Pollution Status in Addis Ababa

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dc.contributor.advisor Pandey Rajeev (PhD)
dc.contributor.author Benito Efrem
dc.date.accessioned 2018-07-02T07:30:41Z
dc.date.available 2018-07-02T07:30:41Z
dc.date.issued 2016-06-28
dc.identifier.uri http://etd.aau.edu.et/handle/123456789/5237
dc.description.abstract In this basic research, which is entitled as “Physicochemical and Bacteriological Analysis of Some Selected Sites from Kebena River and Its Pollution Status in Addis Ababa“, bacteriological and physicochemical analyses have been carried out so as to study the quality of Kebena River based on spatial variations. The key problem that this research is, interested in is the unreliable quality of water supply from the River. Three sampling sites were chosen spatially along the water course to reflect a consideration of all possible activities that are capable of affecting the quality of the River water. And the hypothesized outcome or the expected result of the research has revealed the water quality of the River. The bacterial metrics that have major impact at P < 0.05 significance level on the quality of the River which were used include both qualitative (presence or absence) and quantitative (within or beyond the acceptable limit) aspect namely total coliform count (TCC), e.coli and bioburden; while the physicochemical parameters include dissolved oxygen (DO), biochemical oxygen demand (BOD), temperature, pH, total dissolved solids (TDS), water hardness or total hardness, turbidity and conductivity. The methods utilized by the research are biochemical or phenotype method via culturing method and different physicochemical analyses methods. Results indicated a higher bacteriological contamination in the Downstream as compared to that of Upstream and Midstream. The key (major) or significant bacteriological finding has been the confirmation of the presence of e.coli in the Downstream. The existence of total coliforms across the River has been a major threat for human health. The significant possible health impacts due to high level of these parameters above the standards of WHO guidelines causes health concerns such as cramps, diarrhea (gastrointestinal distress) intestinal illness and a serious kidney condition. Basic statistical analyses have been performed to describe data using quantitative measures such as mean and standard deviation. The mean and standard deviation values have been calculated to assess the spatial variability and identify the classification of water quality in the river. The correlation coefficients were calculated for water quality assessment. General Linear Models have been constructed by making use of univariate and multivariate analyses so as to show spatial variability of the River water quality and the interaction and influence among different parameters respectively. The values of the statistical measures have clearly shown deterioration of the pollution status of the River from the Upstream to the Downstream. Keywords: Physicochemical Parameters, Bacteriological Parameters, Spatial Variability, River Water Quality. en_US
dc.language.iso en en_US
dc.publisher Addis Ababa University en_US
dc.subject Physicochemical Parameters en_US
dc.subject Bacteriological Parameters en_US
dc.subject Spatial Variability en_US
dc.subject River Water Quality en_US
dc.title Physicochemical and Bacteriological Analysis of Some Selected Sites from Kebena River and Its Pollution Status in Addis Ababa en_US
dc.type Thesis en_US

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