Zasidko I. Reduction of Anthropogenic Load During Wastewater Treatment and Sludge Disposal

The thesis is aimed at reduction of anthropogenic load on the environment and we present the integrated technology of municipal wastewater treatment from heavy metals, which includes wastewater treatment and sludge disposal. We have substantiated that the most effective from the point of view of the degree of wastewater treatment from heavy metal ions is the sorption method of wastewater treatment using natural zeolite of the Sokyrnytsia deposit. When studying the sorption of copper and manganese ions, a high adsorption capacity of zeolite was found in the range of their concentrations (0.05 mg/dm3 - 10 mg/dm3). We have compared the adsorption capacity of two sorbents - zeolite and anthracite, and established that zeolite had higher sorption capacity. We also determined the optimal mode parameters of the sorption process. There was carried out the identification of experimental data for theoretical models used for the system water-solid sorbent. It has been established that the process of sorption extraction of copper and manganese was described by Langmuir models based on the theory of monomolecular adsorption. We have described the method of obtaining the biosorbent by pyrolysis of wastewater sediments and experimentally proved its high adsorption capacity. We have elaborated a mathematical model of the economic-ecological system of public utility companies using linear and nonlinear systems of ordinary differential equations based on Runge-Kutta methods, which will make it possible to study the correlation between the dynamics of investment into the environmental situation controling measures in the region and the results of this investment. Our work established that the optimization process of minimizing funds with the maximum investment effect is potentially possible. In the thesis, we develop and present for implementation the recipe of a ceramic composition for production of solid bricks which includes wastewater sediments. Testing of prototypes of the obtained bricks at Ivano-Frankivsk PJSC “Construction Materials” confirmed the theoretical and experimental parameters.