Browsing by Author "Oluwaseun, V.O."

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    Design Analysis of Water Distribution Pipe Network of Royal Valley Housing Estate, Ilorin, Using Arc-GIS and EPANET
    (College of Engineering and Technology, Michael Okpara University of Agriculture, Umudike, Nigeria, 2017-12) Oluwaseun, V.O.; Ayanshola, A.M.; Jimoh, O.M.
    This report presents the use of Arc-GIS and EPANET to analyze simulate and design water distribution pipe network. The field work involved the use of structured questionnaire to obtain information on household demography and obtain water use. The corresponding data obtained was statistically analyzed with use of Stata 12.0 and Microsoft Excel software to establish a model for water use and to evaluate the variables that affect household water use. Google Earth and Arc-GIS software were employed to digitize the map of the study area in order to obtain the spatial information needed for analysis and design. The Water demand at individual node on the pipe network was estimated and used for simulation of the pipe network system. Allocation of buildings to the particular nodes that supplies water to them was carried out with the aid of Arc-GIS software with Voronoi diagram approach. Analysis and simulation was carried out with the aid of EPANET 2.0 software in order to obtain the minimum and maximum pressure, velocity and the flow in various pipes of the water distribution system. It was revealed that the estimated average volume of water used by individuals in the estate based on statistical analysis and questionnaire was estimated to be 90.7 l/c/d which is below the WHO standard of 120 l/c/d for an individual, the simulated minimum and maximum pressure for the study area were 6.67 m and 20.19 m, respectively which was found to be adequate to cater for the water supply to the household in the study area. The pipe diameter required for water distribution in the study area ranged between 75 mm and 100 mm for adequate water supply. The model developed in this research work is very useful for household water use prediction in the study area.
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    Evaluation of the Effect of Precipitation Variation on Groundwater Quality in Ilorin Metropolis, Nigeria
    (FACULTY OF ENGINEERING AND ENVIRONMENTAL SCIENCES, OSUN STATE UNIVERSITY, NIGERIA, 2019-11) Ayanshola, A.M.; Sossou, P.M.; Bilewu, S.O; Abdulkadril, T.S.; Oluwaseun, V.O.; Owolabi, S.O.
    Groundwater is an essential part of the hydrological cycle serving as the primary source of water where public water supply is neither available nor adequate. This study evaluated the seasonal variability of water quality with respect to monthly rainfall depth in Ilorin metropolis, Nigeria. This was achieved by the determination of the month with minimum and maximum rainfall depth as well as determination of the concentration of Physico-chemical and bacteriological parameters of water sample in the study area. Twenty years historical data of monthly rainfall depth was obtained and analysed and a total of 32 water samples were collected from Shallow wells in the month with minimum and maximum rainfall depth from 8 different locations in year 2018 to determine their concentration. The Physico-chemical and bacteriological properties of water samples were analysed using Standard Methods. The potability of the water samples were assessed with respect to WHO standard. The study revealed that Turbidity, Fe2+, Dissolved Oxygen, Total Viable Count and Total Coliform Count concentration exceeded the Word Health Organization (WHO) standard in all the samples. Hence, the Shallow well water sources are polluted and the concentration of these pollutants increased in the month with minimum rainfall depth. The reduction in the pollutant concentration during the month with higher rainfall depth might be as a result of dilution through groundwater recharge from precipitation. The study also shows that the wells are not safe sources for drinking purposes and some form of treatment will be required before consumption.