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Ferrous metallurgy enterprises are among the largest consumers of water, and their water treatment and purification systems are among the most important elements, as the quality of water directly affects the reliability and efficiency of the main equipment of ferrous metallurgy enterprises. In order to reuse wastewater in the technological process at ferrous metallurgy enterprises, it is proposed to use the complex acoustic method developed by the author of the article in 1999. This method enables to intensify sedimentation processes of original and acoustically coagulated suspended particles, thicken the sediment, intensify the process of heat removal from superheated water, etc. The main difference of this method is the use of the same set of acoustic equipment (with removable digital media) to simultaneously solve a range of tasks. The developed method can be applied both independently, and in systems of water purification and treatment existing at enterprises. The results of application of the complex acoustic method for increasing the quality and economy of purification of circulating and sewage industrial waters, and also for intensification of the process of heat removal from the heated circulating water are presented.

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