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Comparison of dissolved air flotation and ballasted sedimentation for the treatment of an algal impacted water

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Autor
Año de publicación 2022
Idioma Inglés
Publicado por Desalination and Water Treatment

Descripción: Abstract: Dissolved air flotation (DAF) is considered better than conventional gravity settling (CGS) for the treatment of algal-laden waters, and ballasted sedimentation (BS), a high-rate separation process, is now often used instead of CGS. Our initial literature search did not identify DAF-BS comparisons for the removal of algae and cyanobacteria from algal laden waters. The objective of this benchscale study was to compare DAF with BS and CGS for the treatment of water from a eutrophic waterway (Bay of Quinte, ON). The study was performed mid-summer when there was substantial algal growth. The optimized BS jar tests had 3% lower average turbidity removal than the DAF jar tests, however BS required 33% more coagulant, as well as 0.25 mg/L anionic polymer and microsand additions. The removal of cyanobacteria and algae (quantified using chlorophyll-a and c-phycocyanin concentrations) by DAF and BS were very similar, and they were superior to that achieved by CGS. The DOC removals and the disinfection by-products formation potential (DBPFP) of DAF and BS treated water were also similar. Based on the chlorophyll-a and c-phycocyanin removals, both BS and DAF performed better than CGS and can be considered suitable for the treatment of algal/cyanobacteria laden waters.
Citación recomendada (normas APA)
: Juan Pablo; Hérard González Galvis, "Comparison of dissolved air flotation and ballasted sedimentation for the treatment of an algal impacted water", Colombia:Desalination and Water Treatment, 2022. Consultado en línea en la Biblioteca Digital de Bogotá (https://www.bibliotecadigitaldebogota.gov.co/resources/3711884/), el día 2025-10-06.

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Temas
- Otros
- Ingeniería
Derechos de uso Derechos reservados
Fuente Biblioteca Virtual Banco de la República
Términos y condiciones de uso Más información aquí
Año de publicación 2022
Formato PDF
Cobertura Colombia

Comparison of dissolved air flotation and ballasted sedimentation for the treatment of an algal impacted water

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Comparison of dissolved air flotation and ballasted sedimentation for the treatment of an algal impacted water

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