Kirichenko P. Scientific prognostication of the Black Sea water area pollution at waste water discharge

The object of research is the process of polluting substances dispersion in surface water. The purpose is to work out efficient numerical models forecasting the Black Sea waters pollution at waste waters disposal taking into account interaction process of waste waters filament and sea water flow. The research methods are based on physical and computing experiments with mathematical models, describing the processes of hydrodynamics and mass transfer. Implicit difference schemes of splitting are used at numerical integration of model equations. Theoretical and practical results: created in this work CFD models allow replacing expensive physical experiment which is necessary for evaluation of pollution zone size and intensity in sea water area at waste waters disposal. Developed numerical models allow quick task solving concerning waste waters influence on sea water area which it is impossible to solve on the basis of normative method or using analytic models. Scientific novelty: the numerical model for waste water dilution research inside water outlet of new construction was worked out for the first time. This water outlet allows preliminary dilution of waste waters before their ingress into water object. Two-dimensional numerical model for sea water area pollution forecasting at waste water disposal was also developed for the first time. It allows taking into account the whole complex of hydrological conditions, waste water collection rate, interaction of waste water filament and sea water flow, possibility of baffle or well placing in sea water area to localize pollution zone, water outlet position on seabed. Three-dimensional numerical model for sea water area pollution forecasting at waste water disposal was created. It allows taking into account hydrological conditions, waste water disposal mode, interaction of waste water filament and sea water flow, water outlet position in seabed. Introduction extent: State Administration of Environmental Protection of Nature in Dnepropetrovsk region, in the educational process of higher educational institution "Kryvyi Rih National University". Range of application: calculation of maximum permissible disposal (MPD) at waste water disposal of enterprises-pollutants, selection and reasoning of surface water protection methods from technogeneous pollution.