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ISSN 2227-6858
English version IS Bulletin Archive 2017. N 3/32


CONSTRUCTION
Environmental Safety of Construction

DOI.org/10.5281/zenodo.897019

Eskin A., Tkach N., Zakharov G.

ANTON ESKIN, Senior Lecturer, e-mail: eskin.aa@dvfu.ru
NADEZDA TKACH, Senior Lecturer, e-mail: tkach.ns@dvfu.ru
GENNADY ZAKHAROV, Candidate of Engineering Sciences, Associate Professor, e-mail: zakharov.ga@dvfu.ru
Department Engineering Systems of Buildings and Constructions, School of Engineering
Far Eastern Federal University
8 Sukhanova St., Vladivostok, Russia, 690091

Determination of the efficiency of a spray absorber under dissolved-air flotation conditions

Abstract: The article presents an experimental study on the efficiency of liquid saturation with air in a pressurised spray tank. The saturation efficiency was determined on the basis of measurements of the local values of the bubbling rate in the flotation compartment. The experiment was carried out under the following conditions: the air pressure in the pressure tank made up 1-5 bars, whereas the liquid temperature stood at 10-40° C. The centrifugal-jet and impact-jet nozzles were used to spray the liquid. The speed of bubbling was determined by the volumetric method using a graduated cylinder. Obtained from the study are the following data: the mathematical models describing the dependence of the rate of bubbling in the centre and near the wall areas of the flotation compartment on the type of spraying device, the pressure of the air in the pressure tank, and the temperature of the liquid. The results of the work can be of use when designing pressure tanks of the spraying type as well as when developing devices to clean oily waters by pressure flotation.

Key words: saturator, bubble, purification, oil products, absorption, spraying.

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