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Title: Risk assessment in water treatment processes for the development of a water safety plan – WSP
Other Titles: Evaluación del riesgo en procesos de tratamiento de agua para el desarrollo de un plan de seguridad del agua – PSA
Authors: Pérez-Vidal, Andrea
Escobar-Rivera, Juan Carlos
Torres-Lozada, Patricia
Keywords: Drinking water
Hazard identification
Hazardous event
Water safety plan
Issue Date: 1-Jul-2018
Publisher: Universidad Nacional de Colombia
Abstract: Drinking Water Treatment Plants (DWTP) must ensure safe water supply; to this end, we applied risk assessment tools for the development of the Water Safety Plan (WSP) in a DWTP from Cali-Colombia, which supplies 1.4 million inhabitants. For the identification of hazards and risk assessment, four tools were used: exploratory analysis of turbidity data, inspection visits, hazard/hazardous event matrix and semiquantitative matrix. Under normal and extreme conditions of turbidity (>400-2500 UNT), it has been guaranteed the turbidity of treated water of 0.39 ± 0.15 UNT, showing the robustness of the DWTP. It was found that sixty percent of the 40 hazardous events had a very high risk level without considering control measures and it was possible reduce to 7% with existing control measures. The improvement or support programs should be directed towards the treatment phases identified as priority (chemical conditioning, coagulation, flocculation/clarification and filtration). © The author; licensee Universidad Nacional de Colombia.
ISSN: 00127353
Appears in Collections:Artículos Científicos

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