Ultrasonic treatment for waste-water cleaning

Abstract

Abstract Purification of liquids from undesirable admixtures and malignant bacteria is one of the most important problems of the mankind. It is especially sharply appeared at the cleaning of sewage. At present in the most part of the world (in densely populated territories) there is a lack of pure fresh water. Industrial and domestic waste waters negatively influence on the ecological situation in stretches of fresh water. It is evident, that it is caused by the large quantity of insufficiently cleaned sewage, which constantly comes to rivers and ponds in the connection with functioning of the industrial enterprises and households. The presence of admixtures and malignant bacteria in different liquid food (beverages, acetic seasonings) decreases their consumer properties and can be harmful for people health. So there is no doubt of the development new methods of liquid purification. The article is devoted to the analysis of the problem of purification of domestic and industrial waters from pathogenic microorganisms, undesirable admixtures and malignant bacterium. It is considered existing industrial solutions and their disadvantages. The theoretical research of optimum ultrasonic influence modes providing maximum diffusion coefficient was performed and example of US apparatus was presented.