Cynara de Lourdes Nóbrega da Cunha

Simulação numérica do comportamento térmico do reservatório do Rio Verde

Changes in the water temperature and in the thermal stratification dynamics can be responsible for negative effects on physical, chemical and biological processes of reservoirs. The temperature variation affects the water density and, consequently, alters the transport processes. A one-dimensional model of thermal evolution is used to simulate the temperature of Rio Verde reservoir, located in the Curitiba metropolitan area, Parana state, Brazil. The finite difference method was employed for the numerical solution of the equation. The model was calibrated and validated by means of the data from two different months: July 2009 and March 2010. The results show a good agreement between simulated and observed values. These results still allow evaluating the relationships between the depth of the thermocline with solar radiation and wind speed.

Reservoir Eutrophication: Preventive Management: An applied example of Integrated Basin Management Interdisciplinary Research

The overall objective of Reservoir Eutrophication: Preventive Management is to present the environmental and anthropogenic factors associated with the process of eutrophication and algal blooms in the Rio Verde reservoir and propose lake use and management technologies in order to minimize the problem. Eutrophication process in Rio Verde reservoir with the occurrence of intense algal blooms is a consequence of the interconnection of different climatological, hydrological, morphological, physico-chemical and biological factors, which occur not only in the watershed but also in the reservoir. Reservoir Eutrophication: Preventive Management compiles the information gathered from the development of a broad research program in Rio Verde watershed, from 2008 until 2010. Rio Verde reservoir, which was built in 1976, is located in the Metropolitan Region of Curitiba, capital of the state of Paran? in South Brazil. This reservoir is mainly used for supplying water to one of PETROBRAS Refinery. However, the reservoir is to be used for supplying drinking water to the population and that is why better understanding this system dynamics is a great concern. The book is the result of an interdisciplinary research program, which has involved more than 150 researchers, with the aim of defining a watershed management preventive system in order to prevent eutrophication processes. This way, the book combines academic rigor with practical applicability and is of interest for both researchers and technologists working in watershed management. Reservoir Eutrophication: Preventive Management is of interest to researchers and technologists that wish to examine specific characteristics of tropical climates. It is of specific interest to developing countries and for researchers interested in knowing the developed methodology adapted for temperate conditions. ISBN: 9781780406480 (eBook) ISBN: 9781780406473 (Print)

Exposure assessment and the risk associated with trihalomethanes compounds in drinking water - doi: 10.5020/18061230.2012.p5

Objetivo: Medir as concentracoes de Trihalometanos (THM) na rede de distribuicao de agua potavel da Baixada de Jacarepagua, Rio de Janeiro-RJ, Brasil, e seus riscos associados. Metodos: Duzentas casas foram visitadas e coletaram-se amostras de agua das torneiras dos consumidores. Estimativas de riscos baseadas em exposicoes foram projetadas, empregando abordagens deterministicas e probabilisticas. Resultados: Os THMs (dibromoclorometano,bromoformio, cloroformio e bromodiclorometano) variaram de 3,08 μg/l a 129,31 μg/l. Riscos nao cancerigenos induzidos por ingestao de THMs foram abaixo do nivel toleravel (10-6). Conclusao: Os dados obtidos nesta pesquisa demonstram que a exposicao aos contaminantes da agua potavel e os riscos associados foram superiores ao nivel aceitavel.