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The paper presents the need for the purification of polluted air from the highly polluting processing technology of an industrial shop. (paint shops, foundries, welding constructions, forging, etc.). Practical realization elements of ultrasonic filter and finite element modeling of the vibratory disk used in air purification system are shortly described. Besides these, advantages of using ultrasounds in the pollutant air filtration and purification process and an ultrasonic filter designed are presented. The main ...