The paper affirms that, despite the number of works in the sludge neutralization of waste water containing heavy metal compounds, the proportion of their use remains marginal. Therefore, one of the important directions of nature protection activities and the natural resources rational use is developing a technology for processing these wastes and their involvement in the production of useful products. The research of chemical, mineralogical and granulometric composition of wastewater slurry waste neutralization in production of vanadium pentoxide and ferrovanadium alloys by OJSC "EVRAZ Vanadium Tula" has been carried out. It is proposed to use a slurry waste in the claydite gravel production technology. The introduction of 1% sludge makes it is possible to obtain the following characteristics of claydite gravel: strength brand P 25, a packed density mark - 250. The 3% increase of the sludge provides a claydite gravel with the strength brand P 15 with the packed density of 250 kg/m3.

Polymer composite materials are increasingly replacing traditional composites such as wood, metal, and natural fibers from the world market of building materials. Polymer composite materials are widely used in the construction industry. Currently, the development of advanced polymer-based composites is a very relevant area. The promising method for modification of epoxy polymer composite with mineral filler schungite is considered. It was found that the introduction of mineral filler increases the composite resistance to impact forces. It is proved that schungite-filled epoxy composites have increased strength and performance properties, which is very important when they are used in the construction industry. After carrying out a number of physical, mechanical and operational studies, it can be concluded that polymer composite materials based on ED-20 resin with the content of mineral filler shungite have the best performance, compared to non-filled composite materials. Thus, the resulting PCM can be used in the construction industry as a finishing material, as it has the necessary complex of strength and performance properties.

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One of the key problems in the development of nanosatellites is to provide a given temperature range for the operation of electronic equipment, the heat transfer of which can be tens of watts. Thermoregulation systems traditional for large spacecraft are not suitable for nanosatellites due to limitations on their mass and size characteristics. The indicated thermal regime of nanosatellites can be achieved using remote heat removal systems - miniature loop heat pipes. In recent years, their mass production has been established in Russia, but they have not yet found wide application in nanosatellites. The aim of the paper is to substantiate the possibility of using miniature loop heat pipes to remove excess heat from the on-board computer processor to the carbon-plastic case of the nanosatellite. Parametric modeling of the influence of geometric dimensions and the values of the effective thermal conductivity coefficient of loop heat pipes on the processor temperature was carried out in the ANSYS program. Calculations showed that the use of contour heat pipes will reduce the processor temperature to acceptable values. The anisotropy of the thermal conductivity coefficient in the reinforcement plane of the composite material of the nanosatellite case can have a significant effect on the temperature of the processor. This opens up prospects for the use of anisotropic composite materials to ensure the thermal regime of the nanosatellite.