DBPapers
DOI: 10.5593/SGEM2014/B51/S20.111

WASTEWATER TREATMENT BY FLOTATION WITH MODERN SYSTEM OF AERATION

D. Sazonov, B. Ksenofontov, E. Antonova, V. Ushinov
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-17-9 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 1, 815-820 pp

ABSTRACT
Flotation is widely used for wastewater treatment. The main part of flotation process is a system of aeration. The objective of this work is to study a modern one which is a combination of classic dissolved air flotation (DAF) and pneumo-hydraulic (or nozzle) systems. The systems were compared by two main parameters: energy consumption or producing 1 m3 of air bubbles and their mean diameter. A multi-stage model of lotation was used to describe a flotation process. Firstly several experiments were eld in a laboratory flotator with the described system of aeration to obtain some omponents of model constants. And treatment efficiency was estimated using the odel. Then prepared synthetic wastewater was treated in the laboratory flotator. The esults showed relatively a good correspondence between the experimental and redicted values of treatment efficiencies.

Keywords: flotation, wastewater treatment, system of aeration