Vasilenko S. Ecological safety of city water supply systems: methodology of studying and management

Object of investigation: ecologically dangerous processes, related to the functioning and development of city water-supply systems. Purpose is improvement of the scientific fundamentals and management methods of municipal water-supply ecological safety. Methods are mathematical and computer modeling, mathematical statistics, GIS-technologies, bio-testing, system analysis. Theoretical and practical results: 1) It is suggested to examine jointly the influence of external factors on the water-supply system and its reverse effect on environment. 2) The complex development model for the water-supply systems is defined. 3) Methods, recommendations and technical means are developed in the part of: analysis of the state and renovation of water-supply networks, multilevel water intake, water quality modeling and control for water bodies, estimation of a system's power efficiency. Scientific novelty: 1) Theoretical fundamentals of the ecological safety of urban water-supply systems are developed. 2) Methodologyof its study on hierarchical principle with the use of system indexes is offered. 3) Postulates, principles, determinations and general system engineering rules for water-supply safety are formulated. Degree of implementation: an automatic water toxicity control post, feasibility study for water pipelines reconstruction, selective water intake are introduced at the "Water" enterprise, mathematical models of water quality and hydrological phenomena - at the "Seversky Donetz River Basin", optimization of water exchange - at the "Dnepr-Donbas channel Administration". Field of application is ecological safety of water utilities.