Research and development of waste waters vibroacoustic purification methods for mining enterprises

摘要

Purpose. Intensification of effluents treatment process and increase in the quality thereof due to use of vibroacoustic oscillations. Development of the technique and technology of vibroacoustic filtration.Methods. We studied a physical mechanism of filtration process during application of elastic oscillations on the basis of research of hydrodynamic situation during filtration and behavior of suspended particles. Effectiveness and fineness of filtration were examined for various filter materials depending on the mode of oscillations.Results. Parameters of waste waters filtration were found to improve under the effect of vibroacoustic oscillations. The performance and effectiveness of filtration do depend on characteristics of filtering material, the amplitude of oscillating velocity and frequency of oscillation. Methods of calculation of the optimal mode to conduct vibroacoustic filtration have been developed.Scientific novelty. Under the effect of oscillations, hydrodynamic conditions of the filtration process change. There emerge counter-current and tangential fluid flows due to which regeneration of filter elements takes place. Conditions for appearance of such flows have been determined.Practical utility. We have designed and developed a pilot of a vibroacoustic filter which has already passed verification in industrial conditions. Results of these tests have shown application perspectiveness of this method in water-sludge systems of mining enterprises.