Without going into details, the existing methods of today cleaning and disinfection, we note the following: – traditional bacteriological or chemical methods, tend to use chlorination. To do this, have stocks of chlorine, which is a source of danger, and decompose in water, chloride form chemical radicals are harmful to human health, including dioxin – a method of ozonation of water. Ozone is a powerful disinfectant, its use greatly improves the organoleptic characteristics of water, but the introduction of ozone is complicated by high energy method and the lack of proper home equipment. Besides , the need to develop methods of control over the content of individual low molecular weight in water, acid-containing compounds and other products of ozonation are not removed during water treatment – treatments drinking water by ultraviolet radiation, used in Russia, are not effective enough to kill spore-forming bacteria, viruses, fungi, algae and mildew. Operating in Russia, the density of UV flow of 16-20 mJ / sm.kv. for drinking water and 28-30 MJ / sm.kv. for the economic – household and industrial waste do not provide effective inactivation of pathogenic microorganisms. Further improvement is necessary to consider the stability microorganisms to chlorine, ozone and ultraviolet radiation.
This is a natural process of evolution. Microbiologists leading scientific centers of the Americas, Asia and Europe show in their reports that over the past 15-20 years, resistance of pathogenic microorganisms to chlorine increased 5-6 times, to ozone by 2-3 times, UV-4 times. This means that with further increase of resistance spores, viruses and protozoa to the above methods of disinfection water and sewage must be in the design of mortgage exposures, taking into account the growth dynamics of the resistance of the person exposed. .