Vronska N. Reduction of the level of hydrosphere bacterial contamination by the complex physical and adsorption methods of wastewater treatment

The thesis is devoted to the ensuring of the hydrosphere ecological safety through the implementation of modern technologies of waste water treatment from the bacterial contamination, ecological risk of disinfection technology of wastewater from the bacterial contamination. The efficiency of wastewater treatment UV, USC (ultra sonic cavitation) is investigated in laboratory environment with using the natural dispersed sorbents at different disinfecting duration and thickness of wastewater layer as well as at different sorbents concentrations. Based on the received data the mathematical model of UV disinfection of wastewater is built. Identification of the theoretical dependences of experimental data allowed to set inactivation coefficients meaning by UV effect that may be used to calculate the actual processes for different types of bacteria. The efficiency of wastewater treatment by complex methods - UV-adsorption and USC-adsorption is investigated in laboratory environment. The disinfection by UV real effluents from WWTP-2 Lviv municipal treatment facilities of Lviv is studied. The principled technological scheme of wastewater disinfection is developed.