Analyzing Seasonal Variation of Water Quality Parameters of Kelani River

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dc.contributor.author Ranathissa, N.P.K.
dc.contributor.author Sampath, J.K.H.
dc.contributor.author Attanayake, A.N.B.
dc.contributor.author Amarakoon, H.A.K.
dc.date.accessioned 2019-07-24T08:27:32Z
dc.date.available 2019-07-24T08:27:32Z
dc.date.issued 2018
dc.identifier.isbn 9789550481194
dc.identifier.uri http://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.description.abstract Raw 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.language.iso en en_US
dc.publisher Uva Wellassa University of Sri Lanka en_US
dc.subject Environmental Science en_US
dc.subject Environmental Engineering en_US
dc.subject Geochemistry en_US
dc.subject Ecology en_US
dc.subject Green Technology en_US
dc.title Analyzing Seasonal Variation of Water Quality Parameters of Kelani River en_US
dc.title.alternative International Research Conference 2018 en_US
dc.type Other en_US


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