Modelling the global efficiency of dissolved air flotation

Autor:	Stuart B. Dalziel, Paul Linden, D. M. Leppinen
Rok vydání:	2001
Předmět:	education.field_of_study Environmental Engineering Isolation tank Chemistry Dissolved air flotation Bubble Population Environmental engineering Agglomerate Particle Water treatment Particle size education Water Science and Technology
Zdroj:	Water Science and Technology. 43:159-166
ISSN:	1996-9732 0273-1223
DOI:	10.2166/wst.2001.0490
Popis:	The purpose of this paper is to examine how the efficiency of dissolved air flotation is affected by the size of bubbles and particles. The rise speed of bubble/particle agglomerates is modelled as a function of bubble and particle size, while the kinematics of the bubble attachment process is modelled using the population balance approach adopted by Matsui, Fukushi and Tambo. It is found that flotation, in general, is enhanced by the use of larger particles and larger bubbles. In particular, it is concluded that for the ultra-high surface loading rates of 25 m/hr or more planned for future flotation tanks, bubble size will have to be increased by a factor of two over the size currently employed in many facilities during dissolved air flotation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e84f544db74804d0dd0cdec356fa8ecb https://doi.org/10.2166/wst.2001.0490 Zobrazit plný text záznamu