RAINWATER HARVESTING TANK EFFICIENCY UNDER DIFFERENT RAINFALL CHARACTERISTICS, WATER SUPPLY AND DESIGN OF THE SYSTEM
Rainwater; efficiency; semiarid; tank
The Brazilian semi-arid region suffers from water scarcity in much of its territory. In this way, it is necessary to use several alternatives of water sources so that there is a balance between demand and water supply, in addition to seeking to increase its availability. The use of Rainwater Storage Systems (SAAC) has been widely adopted to increase water supply, especially in regions with high water shortages and irregularities in the distribution of precipitation. The study will be implemented for several locations inserted in regions with homogeneous rainfall regimes in the State of Rio Grande do Norte. Thus, taking these factors into account, the present work aims to analyze the temporal characteristics of the rain that occurs in each homogeneous area and to verify the efficiency of the water storage system for different combinations of demand, water catchment area and volume of water. reservoir. In addition, an analysis will be made for different rules of water supplementation by an external source supplied by water trucks in dry periods and, thus, seek to propose measures to increase the efficiency of the rainwater storage system (SAAC) characterized by the cistern. In this way, it will be possible to verify the influence between the factors of reservoir volume, roof area, water demand for human consumption and frequency of water supply from the water truck, on the efficiency of the system.