The aim of the research is to develop technology for integrated treatment of surface, underground and mineralized waters, collected by drainage network contaminated by pollutants, to produce both water of the required quality and saturated brines. During experiments the main task was to select and reveal the optimum mode of desalination of initially mineralized ground water belonging to a certain type. The operation mode of reverse osmosis system was selected by gradual change of pressure and change of permeate and concentrate volume ratio (%), parameters of desalination regime change (flow rate, pressure, salt output) were recorded in time. The research was conducted in Zhambyl region, located in the southern part of the Republic of Kazakhstan in 2021. Each operation stage of changing desalination regime lasted for 50 hours, while non-stop work being performed. The tests of reverse osmosis system with natural ground waters of sulphate-chloride-sodium and sulphate-carbonate-sodium types revealed quite reliable and stable desalination regime under changing flow discharge and permeate and concentrate volumes ratios and multiple initial water concentrations. Application of the proposed technological scheme will allow providing the good quality drinking water for shepherd brigades on summer distant pastures and further utilization of salt brines (concentrated waste waters, remained after desalination) in a safe for the environment manner.

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The paper presents the review results of the conformity assessment existing system of finishing building materials with safety requirements. It is noted that the existing assessment methods do not take into account the change in the properties of finishing building materials in the temperature range from 40° C to the temperature of their ignition / combustion / smoldering. The aim of the study is to substantiate the approach and develop a method for assessing the thermal destructive resistance of finishing building materials. In this work, a study of the thermal destruction of finishing building materials was carried out, the dependences of the qualitative and quantitative composition of thermal destruction products on temperature were established, and the influence of temperature and time on the dynamics of thermal destruction was determined. On the basis of the data obtained, the criterion of the thermal destructive resistance of finishing building materials was substantiated, a method of assessing the thermal destructive resistance of finishing building materials was developed and their classification was proposed. The developed methodology and classification of finishing building materials can be applied when assessing the fire hazard of finishing building materials; when preparing proposals for regulatory documents and regulatory legal acts with the aim of safer use of finishing building materials; when modeling the development of hazardous fire factors, allowing to take into account the effect of thermal destruction products.

The article considers the mechanisms of rational natural resources management aimed at technical and technological modernization of agricultural industry as well as at natural resources recovery. The interrelationship of factors participating in the formation of ground-level microclimate, the soil forming process and the hydrogeological regime has been studied. Research Methods. The radiation index (RH) has been proposed to be used for managing the soil and ameliorative conditions of lands. The classification of irrigated lands in the steppe zone has been proposed as well, it is based on the radiation index values. research finding and general conclusion. Thus, there are identified three agricultural zones and three farming systems respectively: neutral, optimal and risky. The main characteristics of the identified farming systems are given. The irrational use of energy resources has resulted in accelerated degradation of the natural environment and desertification of the territory, which in its turn affects the sustainability of steppe agriculture and leads to the deterioration of soil fertility and decrease in gross yields. The necessity to proceed to a new level of scientifically based assessment of bioenergy resources and to develop new farming models, principles and methods of farming system has been shown.