Specific Features of Water Quality Regulation In Process of its Selective Abstraction from Reservoirs

Issues of effectiveness enhancement of the water selective intake for solution of drinking water supply problems with the Perm Chusovaya water intake as a study case have been discussed. Abstraction of water with the best consumption properties is of significant interest in the case of stable vertical water mass stratification. If water with the required properties locates in the upper layers establishment of bottom barriers around water intake head walls to cut off water intake from near-bottom layers is the most effective tool. At this the barrier parameters are to be determined by both the taken water volume and the height of the “discontinuous jump layer” position that define the water mass boundary. The barrier parameters are to be in accordance with the currently active Rules of Reservoirs Exploitation. Field and computation experiments have been carried out to elaborate the technique of stable intake of water with the required consumption properties. A series of computation experiments on impact of water intake amount on the taken water quality has been carried out in 3D with ANSYS Fluent package of computation hydrodynamics. The task was solved within the frameworks of non-stationary isothermal approach. Conclusions concerning both water quality enhancements in the conditions of significant chemical/physical properties’ heterogeneity by depth and provision of effective and stable operation of selective water intake have been obtained.