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The purpose of the paper is to determine the possibility of using water purification slime as a raw material in the production of ceramic building brick. The spectrophotometric, power dispersing, atomic and absorption methods of research and biotesting were used. The possibility of using the water purifying slime as a pore-forming component is proved by the production of ceramsite brick. The optimum amount of the component of water purification slime to the main raw materials has been established. The small level of heavy metals leaching from the received construction material has been experimentally proved. The article can be of interest to the experts in the field of creating new construction materials using the production wastes and sewage purifying.

The need for sewage purification of machine-building production from copper compounds which possess toxic, allergic, cancerogenic, gonadotropny and embryotoxic action, has been justified. The methods of studying of component and mineralogical composition of wastes, which are used for purification of model mortars, have been given. Some methods of purification of mortars from copper ions have been considered. The need for the search of alternative methods of purification, taking into consideration the composition and properties of the purified environments, and also taking into account the possible reset of purified sewage into natural reservoirs, has been shown. It has been revealed, that application of calcium- containingwaste as reagent won't help to additional alkalization of natural reservoirs. Prospects of use of regional industrial wastes for extraction of copper ions out of model mortarshave been shown. The mechanism of purification of model drains from copper ions by a combined reagent has been described.

The aim of this work is to establish the specific features of the adsorption capacity of thermally modified hazelnut shells with respect to Ni2+ ions at different temperatures. Titrimetric, spectrophotometric, atomic-adsorption methods of investigation, optical microscopy, X-ray analysis were used in the work. It is established that the sorption process is endothermic; the time for achieving sorption equilibrium reaches 40 minutes. The article may be of interest to specialists in the field of obtaining new adsorbents using vegetable production waste. The article was prepared within development program of the Flagship Regional University on the basis of Belgorod State Technological University named after V.G. Shukhov, using equipment of High Technology Center at BSTU named after V.G. Shukhov.

In the process of refining vegetable oils, bleaching clays are often used, which leads to the formation of organic mineral solid waste. In the work, the possibility of neutralizing waste bleaching clay by the thermal method and its subsequent use for sewage treatment from dyes was investigated. As a result of the waste heat treatment, a finely dispersed powder was obtained, on the surface of which there were products of various degrees of carbonization of organic substances. To substantiate the theoretical possibility of using the studied material as an adsorbent, the structure of its structure was studied. The obtained micrographs showed that the particles of the modified material are a loose bulk surface with protrusions, cracks, channels, which indicates a strong defect in their surface and high surface energy of the system as a whole, which is a positive factor for the occurrence of adsorption processes. Studies on model solutions of the dye “methylene blue” allowed us to establish that the optimum temperature for roasting is 350 °C and to achieve a cleaning efficiency of 96%.