АНАЛИЗ ЗАРУБЕЖНОГО ОПЫТА УТИЛИЗАЦИИ СБРОСНЫХ И ДРЕНАЖНЫХ ВОД В ОРОСИТЕЛЬНЫХ МЕЛИОРАЦИЯХ

Abstract

Purpose: to review the practice of using drainage and waste water for irrigating agricul-tural crops as a priority for their utilization. Discussions. One of the priority strategies for sustainable management of available water resources is the reuse of drainage and waste water for irrigation reclamation, taking into account the hydrogeological and reclamation conditions of the area. The reducing of the degradation rate of water supply sources subject to the impact of drainage and waste water, is possible only with the creation of a system for regulating water distribution in irrigation systems of various levels, which would allow taking into account the resource of drainage and waste water for irrigation. Most often, drainage and waste water is used for irrigating salt-tolerant crops. The use of drai-nage and waste water with salinity from 1.5 to 10.0 g/dm³ for irrigating grain and fodder crops did not cause a reduction in yield. Conclusions. As the analysis of drainage and waste water utilization shows, their wide-spread use in irrigation reclamation is explained by the increased mineralization and technogenic impurities (pesticides, herbicides, trace elements, oil products, etc.). The measures taken to dilute such waters with fresh water from canals only partially solved the problem of their accumulation and reduction of discharges into water bodies. Also, there was still an increase in the irrigation water consumption for irrigating crops. In this regard, it is relevant to conduct exploratory research in the field of technologies preparation and purification of drainage and waste water for irrigation purposes.