Experimental Studies of Salt Transfer in Irrigation Systems

Abstract

Experimental hydrogeochemical studies on water-balance areas in field and laboratory conditions are considered. The principles of the selection and equipment of water-balance areas and laboratory facilities, as well as the selection of the main pollutants and the chemical composition of indicator solutions and water for the washing of pillars and monoliths, are established. A sequence of experimental procedure in field and laboratory conditions is proposed. A method to determine the salt transfer parameters with the use of mathematical models of salt macrodispersion (three methods: reference curves, moments and graph-analytical), microdispersion, and dissolution is considered. The technique of experimental studies of salt transfer was tested on the northern Ershov irrigation system (NEIS) in the Saratov oblast.