05.00.00 Technical science
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FORMATION AND CONTROL OF TRIHALO-METHANES IN THE DRINKING WATER OF BAGHDAD
DescriptionThe article is devoted to the formation and transfor-mation of trihalomethanes (THMs) in water supply system of Baghdad (Iraq). The results of research work show the dependences of THMs concentration in the tap water on the distance from water treatment plants, chlorine residual and water temperature. It is shown that the way to reduce THMs in Baghdad water supply network is to use the chlorine dioxide for chlorination as well as sorption treatment in case of preliminary chlorination
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Description
The results of irrigation flumes stale survey will indisructive methods are considered on the example of Azov irrigation system. Especially it is noted the possibility of georadar survey application to hydrotechnical structures.
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INSPECTION OF THE TECHNICAL CONDITIONS OF THE “ROSTOV SEA” RESERVOIR DAM TO ASSESS ITS SAFETY
DescriptionCalculation of the dam destruction risk due to filtration processes is made. Calculation algorithm of the destruction risk of a uniform ground dam is worked out. Recommendations on the improvement of the dam technical conditions are given
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Description
The article presents the mathematical models of technological modes of crushing, drying and pressing in the production of pellets from wood raw material with a high degree of rot
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Description
The article is devoted to the development of a compressor type ozonator. It describes the design of a high-productivity compressor ozone generator, which can be used for industrial decontamination of mixed feeds, water, milk, and in the system of presowing treatment of seeds. This construction allows generating ozone with high concentration to 5 g/m3 at high feed air or oxygen from the compressor station (up to 2000 l/min). The article describes the design of the basic elements of tubular ozone generator, examines the factors influencing the productivity of the ozonator. The proposed mathematical model allows calculating the productivity of the ozonator when considering multiple influencing factors. These factors take into account: the parameters of supply voltage, such as the magnitude and frequency of the supply voltage; the configuration and geometrical parameters of electrodes such as, the area of the electrodes, the configuration of the surface of the electrodes and distance between electrodes; parameters dielectric barrier; and the transported gas parameters such as volume, temperature, pressure and composition. Special attention is paid to the design of the electrodes made of woven wire mesh with mesh sizes from 1.5×1.5 to 2.0×2.0 mm. It is noted, that such electrodes allow obtaining the maximum productivity of an ozonator, and they do not lead to overheating of the dielectric barrier, and do not output down the generator. In the same way, the article presents the results of the mathematical modeling of ozone generator productivity while changing various factors
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DANGEROUS AND HARMFUL IMPURITIES IN NATURAL AND DRINKING WATERS
DescriptionIn the article we have experimentally substantiated the quantitative measurements on the estimated parameters using a set of chemical tools for water quality assessment called NHS-voda
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Description
The article describes the device that allows to take immediate measurements of soil moisture while harvesting potatoes and to identify optimum fluctuation modes of the working element in it
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THE DESCRIPTION OF PROCESS OF WATER GIVING OF THE AEROHYDRAULIC WATER LIFT WITH THE REGRESS EQUATION
DescriptionIn the article we have considered the experimental installation, for realization of full factorial experiment on research of productivity of the aerohydraulic water lift. The regress equation describing process of water giving of the aerohydraulic water lift has been received. We have also checked the adequacy of the equation of regress
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Description
Efficient dairy cattle breeding are largely dependent from technology content and service animals. Most farms use a tethered way content. With this method of milking, the technology requires the introduction of new techniques to increase productivity on the farm and cost reduction of dairy products. The most rational is improving the design of existing milking machines. Regarded device for automatic removal of hanging part of a milking machine, its structure and working principle. The main unit of the device is a pneumatic motor that operates from the vacuum system of the milking plant. In the housing mounted on the shaft of the pneumatic motor rotor with curved vanes, there are magnetic elements. These elements should have the necessary geometrical and force parameters to ensure the normal operation of the device for automatic removal of hanging part of milking machine. The article describes a laboratory research and an analysis of the magnetic elements. In laboratory studies, we have revealed a dependence of the traction capacity of pneumatic motor from linear and power parameters of the magnetic elements, as well as established necessary geometric parameters and the magnetic field strength of the elements for normal operation
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DEFINITION OF HEIGHT OF PULLING BODY INSTALLATION
DescriptionIn the article signs of sprouts of the tobacco are considered, allowing to make its division on suitable and unsuitable to disembarkation. Essentially new scheme of the working body is presented, allowing to make sample of sprouts vegetable and commercial crops from ground with pulling