Influence of Extreme Strength in Water Quality of the Jucazinho Reservoir, Northeastern Brazil, PE

Abstract

Abstract:The Jucazinho reservoir was built in the State of Pernambuco, Northeastern Brazil, to water supply in a great part of the population that live in the semi-arid of Pernambuco. This reservoir controls the high part of Capibaribe river basin, area affected several actions that can compromise the reservoir water quality such as disposal of domestic sewage, industrial wastewater and agriculture with use of fertilizers. This study aimed to identify the factors that lead to water quality of the Jucazinho reservoir using a database containing information of nine years of reservoir water quality monitoring in line with a multivariate statistical technique known as Principal Component Analysis (PCA). To use this technique, it was selected two components which determine the quality of the reservoir water. The first principal component, ranging from an annual basis, explained the relationship between the development of cyanobacteria, the concentration of dissolved solids and electrical conductivity, comparing it with the variation in the dam volume, total phosphorus levels and turbidity. The second principal component, ranging from a mensal basis, explained the photosynthetic activity performed by cyanobacteria confronting with the variation in the dam volume. It observed the relationship between water quality parameters with rainfall, featuring an annual and seasonal pattern that can be used as reference to behaviour studies of this reservoir.

Rehabilitation scenarios for reservoirs: Predicting their effect on invertebrate communities through machine learning

“…First, there is clear benefit in improving wastewater treatment facilities to decrease nutrient enrichment and organic contamination, since these measures result in higher biodiversity (more taxa ), higher biological quality (more sensitive taxa ) and higher water quality (less eutrophic waters) in the reservoirs. These changes will enhance the ecosystem services that are presently highly compromised, such as providing leisure opportunities, food (fishing) and water for irrigation and human consumption, while also requiring less treatment (Gunkel et al, 2015; Keitel, Zak, & Hupfer, 2015; Melo et al, 2017). In addition, our study highlighted the importance of investing in the improvement of least disturbed sites, and not only the most disturbed.…”

Abastecimento rural de água: uso e demanda em comunidades do Semiárido e a disponibilidade hídrica das aluviões

“…A lavandeira de jeans usa água de um poço amazonas em seu processo industrial, mas não houve registro de descarte das águas residuárias no rio. Esta é uma prática que acontece em maior número em trechos mais a jusante do rio Capibaribe, à medida que este se aproxima da cidade de Toritama, impactando negativamente de forma muito significativa na qualidade da água (Melo et al, 2017).…”

Advanced Hydroinformatic Techniques for the Simulation and Analysis of Water Supply and Distribution Systems

“…This issue contains 18 papers which focus on some of the mentioned problems of water distribution system management. The key points are: (i) design of water system [1][2][3][4]; (ii) optimization of network performance assessment [5][6][7][8]; (iii) monitoring and diagnosis of pressure pipe system [9][10][11]; (iv) optimal water quality management [12][13][14]; and (v) modelling and forecasting of water demand [15][16][17][18].…”

“…Furthermore, in de Melo et al [13], the factors that influence the water quality of the Jucazinho reservoir in northeastern Brazil have been pointed out by a data base of nine years of water quality reservoir monitoring and a multivariate statistical technique (i.e., the Principal Component Analysis, PCA). The study points out the connection between water quality parameters and the rainfall that has an annual or seasonal pattern.…”