IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 2- HYDRO-ENVIRONMENT : MODELLING FATE AND TRANSPORT OF ESCHERICHIA COLI AND CRYPTOSPORIDIUM SPP. USING SOIL AND WATER ASSES...
MODELLING FATE AND TRANSPORT OF ESCHERICHIA COLI AND CRYPTOSPORIDIUM SPP. USING SOIL AND WATER ASSESSMENT TOOL
Author : VIKTOR JOHANSSON & EKATERINA SOKOLOVA
Maintaining good quality of drinking water sources is essential as a part of drinking water management. Lately, microbial organisms originating from faecal contamination have been increasingly identified as a health risk and as an issue for providing safe drinking water. In Sweden, Lake M?laren is a drinking water source for two million people. The aim of this study was to set up, calibrate and validate a hydrological model using the Soil and Water Assessment Tool (SWAT) for a catchment area draining to Lake M?laren in order to simulate transport and fate of faecal contaminants in the form of Escherichia coli and Cryptosporidium spp. oocysts. Furthermore the applicability of using the SWAT model for simulating transport and fate of faecal contamination in this area will be evaluated. Sources of faecal contamination were identified through literature studies and contacts with local authorities. Model calibration n was performed on water flow in three 2 different sub-basins using SWAT-CUP. It showed an Nash-Sutcliffe Efficiency (NSE) between 0.18-0.44 and R between 2 0.26-0.53, whereas validation resulted in an NSE between 0.05-0.1 and R between 0.10-0.16. The modelling results showed that wastewater treatment plants were the dominating source of faecal contamination. Temporary spread of manure could also be seen as an important contributor. Catchment outlet concentrations of E. coli were higher than acceptable for Swedish bathing water quality, and the concentration of Cryptosporidium spp. oocysts were in the same range as reported in other studies.
File Size : 559,302 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 2- HYDRO-ENVIRONMENT
Date Published : 18/04/2016
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