Optimização do sistema de captação de água do aquífero da vila sede do distrito de Muanza, província de Sofala

Abstract

The Muanza district is supplied with water from hand-dug wells and seasonal river courses, which, during dry periods, become scarce, thus creating a difficulty in accessing drinking water.

Optimizing groundwater extraction in the Muanza aquifer proposes sustainable technical solutions for water supply.

The investigation was based on the analysis of the hydrogeological context, identifying the predominant aquifer, its productive capacities, and water quality. Flow tests and physicochemical analyses were carried out, which confirmed the viability of exploitation. The results demonstrate that the aquifer has a minimum production flow of 2 m³/h and a maximum of 90 m³/h, which satisfy the population water demand of the study area.

To ensure the sustainability of the supply, that is, without water stress and with sustainable exploitation, the pumps must be submerged to the recommended depth and flow rates above the recommended level for each borehole should not be exploited, thus ensuring that the dynamic level of each borehole does not exceed the limit defined to guarantee safety in the exploitation system of each borehole.

Thus, it is understood that groundwater extraction in Muanza is viable, but requires rigorous technical and scientific planning, associated with sustainable water resource management practices, to ensure the continuous supply of drinking water to the population, considering both local hydrogeological limits and demographic expansion.(TRADUÇAO NOSSA)