Residual Chlorine Decay in Juja Water Distribution Network using EPANET Model
Agboka Komi Mensah1, Alfred O. Mayabi2, Charles Cheruiyot3

1Agboka Komi Mensah*, Department of Civil Engineering, Pan African University Institute of Basic Sciences, Technology and Innovation, Kenya.
2Alfred O. Mayabi, Department of Civil, Construction and Environment Engineering, JKUAT University, Kenya.
3Charle Cheruiyot, Department of Civil, Construction and Environment Engineering, JKUAT University, Kenya.
Manuscript received on September 11, 2019. | Revised Manuscript received on October 25, 2019. | Manuscript published on October 30, 2019. | PP: 332-334 | Volume-9 Issue-1, October 2019 | Retrieval Number: A1639109119/2019©BEIESP | DOI: 10.35940/ijeat.A1639.109119
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Abstract: The current study was carried out to analyze the residual chlorine decay analysis within the existing Juja water distribution network. The study used EPANET as a simulation tool. From the field samples, the first-order bulk decay coefficient Kb was found equal to – 0.04 . The wall coefficient Kw was assumed to – 4.0 mg/ /day as guided by literature. The analysis shows that the entire supply area of the existing distribution network faces higher residual chlorine concentration (0.70 to 0.8 mg/l) from 9 am. The study recommended the reducing of the initial chlorine added at the treatment plant and the optimization of the network, which will provide a proper residual chlorine dosage to reduce Juja consumers exposure to health risk and also to be economically reasonable for the water company in charge
Keywords: Residual Chlorine, Distribution System, Bulk decay coefficients, Wall decay coefficients, EPANET.