The aim of the work is the ecological and economic substantiation of effluents utilization in irrigation systems on the basis of dynamic programming method. Land reclamation is associated with intensive anthropogenic environmental impact; therefore the developed ecological and economic model based on the dynamic programming method will allow carrying out a multi-level ecological and hydrological assessment of the wastewater-irrigated plots. The developed model is based on the configuration of a hierarchically controlled dynamic system, which includes: the impact source of the upper level (Master), the impact source of the lower level (Slave), the managed dynamic system (MDS). Dynamic programming in the broad sense is the optimal control of the process by changing the controlled parameters at each step and, consequently, influencing the process, changing the state of the system at each step. Two groups of subjects associated with the managed dynamic system are admitted in the model: Master and Slave, where Slave directly influences the system in its own interests, and Leader ensures observance of these objective interests, having the opportunity to impact on Slave without the Leader’s direct influence on the system. Modeling allows determining the main properties of the ecological meliorative system, the laws of development and interaction with the outworld, the best ways of managing the ecological-meliorative system to achieve the set goals, to predict the direct and indirect consequences of implementing different forms and methods of influencing the ecological object. Using the dynamic model, it is possible to regulate purification index intended for irrigation, based on ecological capacity of cultivated lands.
Keywords: groundwater, dynamic programming, pollution, wastewater, irrigation systems, irrigated land.
