Analyzing Seasonal Variation of Water Quality Parameters of Kelani River

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dc.contributor.authorRanathissa, N.P.K.
dc.contributor.authorSampath, J.K.H.
dc.contributor.authorAttanayake, A.N.B.
dc.contributor.authorAmarakoon, H.A.K.
dc.date.accessioned2019-07-24T08:27:32Z
dc.date.available2019-07-24T08:27:32Z
dc.date.issued2018
dc.description.abstractRaw water quality of a surface water body directly affects the purification process and the final water quality of drinking water. When considering Sri Lanka, the Kelani River plays a vital role in fulfilling people's water necessities, as it provides water for more than 80% of the population of the capital city, Colombo. The current study focuses on the Kelani River in order to identify the models of variation of raw water quality parameters and to investigate patterns and trends of parameter variation. The main objective was to forecast the variation of water quality parameters with special reference to the Kelani River. The water quality was analyzed with different parameters including pH, Turbidity, Electrical Conductivity, Total Colifortn and Escherichia coli, and data gathered for five years (2012 - 2017) at five different intakes. Analysis was carried out by R studio software. Time Series techniques were used to perform the tests, and all decisions were made under p-value of 0.05. ARIMA and SARIMA models were used to identify the best fitting model for the variation of quality parameters with time. Results were forecasted for a 6 month time period using the above fitted models. Based on obtained results, the seasonality of the water quality parameters changed from one intake to another. When analyzing the pH, Ambathale and Biyagama showed seasonality while other three intakes showed non seasonality. Electrical Conductivity had a seasonal variation at Biyagama and Pugoda intakes, while Escherichia colishowed seasonality for Ambathale intake only. Frequent long-term monitoring of physicochemical parameters of surface water resources is vital for the better management of water resources as well as aquatic habitats and the environment. Based on the results of this study, a better prior understanding about the behavior of raw water quality parameters can be obtained, and this prior understanding can be used to manage the water purification process and final water quality.en_US
dc.identifier.isbn9789550481194
dc.identifier.urihttp://erepo.lib.uwu.ac.lk/bitstream/handle/123456789/1571/247-2018-Analyzing%20Seasonal%20Variation%20of%20Water%20Quality%20Parameters%20of%20Kelani%20.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.subjectEnvironmental Scienceen_US
dc.subjectEnvironmental Engineeringen_US
dc.subjectGeochemistryen_US
dc.subjectEcologyen_US
dc.subjectGreen Technologyen_US
dc.titleAnalyzing Seasonal Variation of Water Quality Parameters of Kelani Riveren_US
dc.title.alternativeInternational Research Conference 2018en_US
dc.typeOtheren_US
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International Research Symposium of UWU-2018