Optimización del proceso de coagulación como pretratamiento de flotación por aire disuelto para la reducción de materia orgánica natural tratando agua del rio Ottawa

Natural organic matter (NOM) impacts water quality by adding color, odor, and flavor in water treatment plants (WTPs). Turbidity and NOM removals in WTPs are conducted using coagulation, flocculation, and clarification processes. The objective of this research was to evaluate different coagulant doses at different target pH to find an optimum combination of pH and coagulant dose for removing NOM using dissolved air flotation (DAF) as a clarification process. The results showed that the optimal dose for NOM reduction measured as dissolved organic carbon (COD), ultraviolet absorbance at 254 nm (UV-254) and true color was 30 mg/L as Al2O3 (2.73 mg Al/L) for a target pH of 6.0. However, the best reduction of the specific UV absorption (SUVA) had a target pH of 5.0 with the same optimal coagulant dose of 30 mg/L as Al2O3 (2.73 mg Al/L).

• Autores: Othman, Ben; González Galvis, Juan Pablo
• Fecha de publicación: 2021
• Institución: Universidad Santo Tomás
• Repositorio: Universidad Santo Tomás
• Idioma: spa
• OAI Identifier: oai:repository.usta.edu.co:11634/36849
• Acceso en línea: http://revistas.ustatunja.edu.co/index.php/lingenieux/article/view/2336; http://hdl.handle.net/11634/36849
• Palabra clave: Natural organic matter; Coagulation; Flocculation; Dissolved air flotation; Materia orgánica natural; Coagulación; Floculación; Flotación por aire disuelto
• License: Derechos de autor 2020 L'esprit Ingénieux 11