Abstract-A number of issues arose due to the transfer of animal husbandry to the industrial basis. They are associated with high stocking density of animals in a limited space. They are primarily the high energy consumption for creation of optimal microclimate, the increase in the risk of spreading infections transmitted by aerogenic microbes, the increase of environmental load on the environment and the deterioration of working conditions of the staff. These problems are mainly associated with the use of ineffective methods of ventilating livestock buildings. In this paper, the authors propose using a system of partial recirculation of ventilation air with its simultaneous highperformance cleaning and disinfection in livestock complexes. As the filter element, it is proposed to use a wet single-zone electrostatic precipitator having high efficiency to clean the air from dust, germs and harmful gases such as ammonia and hydrogen sulfide. To improve the efficiency of purification and decontamination of the air environment of livestock buildings, it is advisable to use two-stage wet electrostatic precipitators with increased efficiency of disinfection of air environment and high performance in air cleaning from dust and harmful gases.

The main task of an agricultural enterprise is the production of a certain quantity of products. Any production activity is associated with energy spending. And before any production there is a question-what amount of energy will be required at the existing level of technology for obtaining this product, and in general, is there any point in spending that amount of energy? Perhaps it is more expedient to use the means invested in energy resources to purchase finished products? Therefore, there is always a problem in determining the economically expedient relationship between the energy expended on the production of a certain product and the amount of output produced.

As a result of industrialization modern agro-industrial production and development of the industrial base, animal production meets with some problems. Without solving this problem, further, development becomes difficult. One such problem related to increasing a specific density of planting animals on limited. As a result, this problem leads to worsening sanitation and hygiene on the territory of animal stock and outside. One of the most hazardous and dangerous gas components is hydrogen sulfide. This component generates in animal premises. The hydrogen sulfide is very dangerous for animals, peoples and technological equipment. One from modern solutions is the wet electro filter filtration technology with wet one zoned filter. The technology combines the high efficiency of purification, high technology, and automatization. The theoretical process models and lab research showed the high efficiency of environment purification from hydrogen sulphide. Using the technology supplies a level of hydrogen sulphide in the environment of animal premises in acceptable limits. These lead to increase in production figures and agro-industry culture.

A dust is formed in the during of vital functions in towns and suburbs. Also dust is formed in the during of technology and industrial operations on the AIC enterprises and other enterprises. A dust is hazardous factor of worker's zone microclimate. A dust have is various composition, size and extraction. This dust is negative affect on people’s health and animals’ health, also electrical and electromechanical hardware have is negative effect too. The quality of products decrease. The environment, living and industrial premises are suffering from the dust. A dust penetrates through ventilation system from windows and doors and goes to the peoples’ clothes and boots. In the course of employment, the dust can hit to respiratory, visual organs and humans’ skin. That's why monitoring of dust in the environment and dust control is serious hygienic, social and economic task. To evaluate state of the environment have been measured of a dust concentration in the classes of Engineering-Technical institute of State Agricultural University of North Ural in the during of lessons. Students spend the significant part of their time on the lessons, therefore environment quality and concentration of dust is affect to students’ health. The researched class is located near with the big car interchange road, also near is located agricultural grounds and rail-roads. But measures have not identified excess of dust concentration. Keywords: DUST, VENTILATION, CLASSES, MONITORING OF THE STATE OF THE AIR ENVIRONMENT

A new resource-saving technique for production of multilayer metal sheets and tubes with low-melting metal iaterlayers has been developed. The technique proposed has an advantage over the production of multilayer metal sheets at VILS JSC in that it reduces manufacturing costs by a factor of three due to the use of hot-rolled steel instead of stainless steel, elimination of electric heating of the cold packs of steel and aluminum alloy sheets to 400~ before rolling, elimination of transportation of steel sheets from the metallurgical plant to the multilayer production plant, and expansion of the range ofmultilayer products. Electric heating of the cold pack of steel and aluminum sheets takes, for reference, one-third of the total cost of multilayer sheets. If aluminum costs 12 million rubles/ton, the cost of bimetallic sheets at VILS JSC is 36 million rubles/ton. Two-layer sheets of steel and aluminum alloys fabricated by the suggested technique costs, lessthan 10 million rubles/ton. Besides aluminum, copper, brass, bronze, and other low-melting metals are used for multilayer sheet production.At present, multilayer metal tubes (GOST 10192-62) with an inner and outer covering of low-melting metals are fabricated from cold sheets stacked into a pack with preliminary electric heating before rolling. After roiling, the multilayer sheet is subjected to hot deformation: rolling up into a tube shell. Then longitudinal inner and outer seams are welded. All this is multistep and expensive work. Two-and three-layer sheets are fabricated on the 1500 roiling mill of Serp i Molot plant by the suggested technique Progress-4 Joint-Stock Company, Moscow, Russia.( Fig. 1): from the heating chamber /, a 30-mm-thick steel workpiece 2 with a temperature of II00~ is delivered along the mill table 3 to the press rolls 4 with a drive and rolled in an automatic reversing regime for 5 -7 cycles. Scale hydroblasting is provided. After rolling, a l-mm-thick sheet of low-melting metal 6 whose surface was preliminarily subjected to degreasing and acid pickling is laid onto the hot steel sheet 5 2-5 mm thick. The temperature of the steel sheet is 10 -50~ below the melting point of the low-melting metal. Under the pressure of press rolls 7 the steel and lowmelting metal sheets are welded together, forming bimetallic sheet 8, which then is passed to the cutting table and stacked. Temperature of the contact rises to the melting point 9 of low-melting metal as the pressure increases.To obtain three-layer sheets bimetallic ones are turned over, low-melting metal downward, and transferred to the holder 6 for laying onto a hot steel sheet and rolling by press rolls. The rolling pressure for multilayer sheets is lower than for steel sheets. The 1500 rolling mill allows multilayer sheets up to 1000 mm wide and up to 2000 mm long to be produced.Two-and three-layer sheets and shells for multilayer metal tubes with an inner and outer covering of low-melting metals are fabricated on the 560 rolling mill (Fig. 2), using the heat of a steel band 1 after hot ...