Evaluación de impacto del enriquecimiento de nitrógeno en suelos regados con aguas residuales tratadas de la planta de tratamiento de la ciudad de Ingeniero Jacobacci (Río Negro)

Abstract

The reuse of treated wastewater (RTWW) for agricultural irrigation is of special interest in arid and semi-arid regions, since it reduces pressure on water resources and closes the hydrological cycle on a small and medium scale. On the other hand, water and nutrients are used for crops in environments where their availability for human activities is very limited. Although it is a growing trend at the global and regional levels, which has many advantages, there are some environmental risks that need to be monitored, including soil enrichment in different forms of nitrogen. The purpose of this work is to propose a Nitrogen (N) balance, evaluate its adjustment and propose a monitoring plan for the behavior of N, in its different forms within the system. It is hypothesized that the RTWW for irrigation will increase the concentration of Nitrogen in the soil, but at the same time, the harvest of biomass will allow maintaining the levels of mineral Nitrogen at admissible values for crops and avoiding the excessive movement of nutrients in the soil.