Dissolved Air Flotation: A Review from the Perspective of System Parameters and Uses in Wastewater Treatment
Open Access
- 26 August 2021
- journal article
- review article
- Published by Instituto Tecnologico Metropolitano (ITM) in TecnoLógicas
- Vol. 24 (52), e2111
- https://doi.org/10.22430/22565337.2111
Abstract
The current issues of climate change and high freshwater demand worldwide have promoted the implementation of wastewater reclamation technologies. This study aims to review the efficiency of the dissolved air flotation (DAF) technique in a wide variety of applications in the agricultural, industrial, domestic, and municipal sectors, which have high freshwater consumption worldwide. We made a systematic review of the DAF technique in wastewater treatment in 2015-2021. We reviewed six indexed databases and governmental statistical reports; we used the keywords: dissolved air flotation, microbubbles, wastewater treatment, and the main operating and design parameters involved in the effectiveness of the flotation process. Additionally, we conducted a review of the most common synthetic coagulant studies used with DAF, as well as natural coagulants that promise to mitigate current climate change. Finally, we discussed advantages, disadvantages, and potential future studies. DAF to have considerable potential for wastewater treatment, as well as for waste utilization. The generation of large quantities of DAF sludge is a breakthrough for clean energy production, as it allows the use of this waste for biogas production.Keywords
This publication has 100 references indexed in Scilit:
- Guidelines for conducting systematic mapping studies in software engineering: An updateInformation and Software Technology, 2015
- Innovative use of dissolved air flotation with biosorption as primary treatment to approach energy neutrality in WWTPsWater Practice & Technology, 2015
- A model of particle removal in a dissolved air flotation tank: Importance of stratified flow and bubble sizeWater Research, 2015
- Bioreactor consisting of pressurized aeration and dissolved air flotation for domestic wastewater treatmentSeparation and Purification Technology, 2014
- Enhanced DAF in breaking up oil-in-water emulsionsSeparation and Purification Technology, 2014
- Evaluation of a chemical dissolved air flotation system for the treatment of restaurant dishwasher effluentCanadian Journal of Civil Engineering, 2013
- Enhanced efficiency of dissolved air flotation for biodiesel wastewater treatment by acidification and coagulation processesDesalination, 2011
- Dissolved air flotation and meWater Research, 2010
- DAF–dissolved air flotation: Potential applications in the mining and mineral processing industryInternational Journal of Mineral Processing, 2007
- A review of the technological developments of dissolved air flotationJournal of Water Supply: Research and Technology—AQUA, 2006