ISSN : 2488-8648
International Journal of Basic Science and Technology
A publication of the Faculty of Science, Federal University Otuoke, Bayelsa State
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ISSN : 2488-8648
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×published date:2023-May-21
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Abstract
The problem of potable water deficiency is becoming a global concern. The sixth of the sustainable development goals (SDG) calls for eradicating open defecation and ensuring that everyone has access to clean, affordable drinking water and to also promote sustainable freshwater supply and abstraction as well as to enhance water quality and water usage efficiency. The disinfecting process has been considered one of the most important vital steps in underground water treatment. Ozone (O3) is one of the disinfecting mechanisms used in groundwater to remove microorganisms, inorganic ions, and organic pollutants from underground water samples. This study is therefore focused on the assessment of the efficacy of ozone gas-based sterilization on underground water in a university community of Federal University Oye Ekiti, Ekiti State, Nigeria, and its environs where dependence on underground water is prominent because of lack of access to pipe borne water. O3 was diffused through water samples obtained by grabbed sampling method from different hand-dug wells (HDW1-HDW8) in the community for multiple durations (05, 10, 15, and 20 min), to determine the effectiveness of O3 in eliminating pathogens. Preliminary results showed that the E-coli levels in HDW1-HDW8 range between 28 and 55 cfu per 100ml of water sample. Upon exposure to ozone, the E-coli levels reduced drastically (0-8 cfu) at exposure times of 15- 20 minutes which conforms to the standard stipulated by the WHO (0-3cfu) and NSQDW (0-10cfu). It concluded that the high presence of E-coli in underground water sources in these communities requires proper treatment before consumption to forestall waterborne diseases and death and recommends the use of ozone for its treatment at an exposure rate of 20 minutes. .
Keywords: Underground water, Ozone generator, Pathogens, Oye Ekiti,
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