About 2,200 km3 of wastewater is discharged into the environment annually: municipal (including households), industrial and agricultural (including drainage water) – at the same time, as indicated in the UN World Report on the State of Water Resources for 2023. Over the past 40 years, global water use has been increasing by about 1 % per year and is expected to grow at this rate until 2050 as a result of the combined impact of factors, such as population growth, socio-economic development and climate change consumption patterns. With increasing consumption of water resources, the volume of their pollution increases, which creates serious environmental, economic and social problems. In this regard, the preservation of water and food security through sustainable management of water resources, universal quality provision of water supply and sanitation services are global problems all over the world and require an integrated approach involving government agencies, private business, academia and public organizations. The water supply and sewerage industry has an extremely important social character, as it directly affects the health of the population and the environment. This requires the use of new effective environmentally friendly technologies for cleaning blockages and improving the mechanical characteristics of sewer pipelines, which will significantly increase their service life and reduce repair costs. The conducted studies have proved the effectiveness of using small-sized ultrasonic devices with an ultrasonic generator with a power of 0.1–10 kW, a frequency of 20–40 kHz, and a magnetostrictive transducer.
Идентификаторы и классификаторы
Modern urban sewerage is a complex engineering system, the function of which is the purification and subsequent discharge of wastewater generated in populated areas. Currently, there are no precise criteria to assess the condition of sewer networks and the potential hazards associated with the destruction of their structures, depending on the nature and extent of damage. The creation of a centralized sewerage and water supply system for large cities and megacities in many countries of the world has become a good and effective tool for solving problems arising from the vital activity of the urban population and eliminating their environmental consequences. It is obvious that sewage systems do not last forever, and the service life of sewer pipelines is often much shorter than the design one due to errors made during the construction and operation of networks [1]. The destruction of sewage pipelines annually causes billions of dollars in damage to the economies of developed and developing countries [2]. These are not only large financial costs to eliminate their consequences but also social and moral costs.
Список литературы
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