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Hydrodynamic Collision Efficiency and Flotation Characteristics of Inorganic Particles in DAF Process  

Kwak, Dong-Heui (서남대학교 환경화학공학부)
Kim, Sung-Jin (한영대학 보건환경과)
Lee, Hwa-Kyung (서남대학교 환경화학공학부)
Jung, Heung-Joe (서남대학교 환경화학공학부)
Lee, Jae-Wook (서남대학교 환경화학공학부)
Chung, Paul-Gene (전북대학교 환경화학공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.16, no.6, 2002 , pp. 655-662 More about this Journal
Abstract
Separation characteristics of inorganic particles occurred during heavy rainwater were investigated in DAF (dissolved air flotation) process. In order to remove the inorganic particles effectively, the collision and flotation efficiencies were examined from a hydrodynamic point of view. Generally, the collision efficiency increased with floc size under the variation of fluid dynamic conditions including inertial force. However, more precise model should be required to analysis the collision efficiency expressed both the physical properties for inorganic particles and hydrodynamic conditions for a reactor.
Keywords
collision efficiency; flotation characteristics; inorganic particles; dissolved air flotation;
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