Impacto da variação climática na qualidade de água de corpos hídricos do semiárido cearense: estudo de caso do reservatório Patu, Ceará

Abstract

Water is essential in the maintenance of health and population development. Lately, the increased of demand for human supply and others multiples uses, such as irrigation, recreation, in industrial processes, in addition to the society interest in achieve and maintain water quality standards defined in legislation, ensuring that the water is proper for each use, results in one of the biggest environmental challenge: The conservation of water quality, in a way that is capable to ensure environmental balance for the current and future population. This work will be based on the limnology study of the aquatic ecosystem of Patu reservoir. The rainy and dry season, due to climate, provokes volume variability, especially in Ceará semi-arid region, where the effects of the seasonal rainfall variability on reservoir volumes are responsible, in most cases, for the reductions of impurities dilution capacity. This work will study this behavior of reductions of dilution capacity by modeling a generic conservative matter, and compare the result to real data, collected by COGERH (Water Resources Management Company of Ceará). It will also observe the ratio change of the concentration pollutants with volume variability. The difference in this academic work is the idea of bringing a relationship between the reduction of available water and the reduction of water quality. This link has such importance, because availability of water without quality means more costs with water treatment for its several uses, and also implies in more challenges in water and waste water management