Treatment of milk industry effluent by dissolved air flotation
AUTOR(ES)
Couto, H. J .B., Melo, M. V., Massarani, G.
FONTE
Brazilian Journal of Chemical Engineering
DATA DE PUBLICAÇÃO
2004-01
RESUMO
In this work, the application of the flotation technique by dissolved air (FAD) to the treatment of milk industry effluent (milky effluent) is analyzed. Initially, batch studies were carried out in a column built of acrylic with an external diameter of 2.5 cm and 50 cm in height. Afterwards, the performance of a flotation tank with a 5.5 L capacity in the treatment of the milky effluent was addressed. In continuous mode of operation, separation efficiencies up to 90% were obtained for the experiments carried out at a saturation pressure of 4 atm and having a ratio of feed flow rate (Qa) to saturated liquid flow rate equal to 1. The separation efficiency for flocculated milk was estimated from the overall mass balance for the flotation tank. Separation efficiencies obtained agreed very well with the experimental results collected for Qa/Q Ls ratios lower than 1.
Documentos Relacionados
- Optimizing dissolved air flotation design system
- Dissolved Air Flotation for Fiber Removal from Clear Water
- Application of dissolved air flotation like post-treatment of effluent from activated sludge in a pulp and paper industry
- Modelling of the dispersed air flotation process applied to dairy wastewater treatment
- Use of column flotation for the treatment of effluent from the dairy industry