Bases Para a Estruturação de Indicadores de Qualidade de Águas.

Marques, David; Bollmann, Harry Alberto

doi:10.21168/rbrh.v5n1.p37-60

Cited by 10 publications

(2 citation statements)

References 1 publication

(1 reference statement)

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“…Um dilema, nesse caso, será a escolha das variáveis a serem monitoradas, considerando que é o uso a que se destina a água o que vai determinar as características desejadas. Esse princípio norteou a política de preservação dos recursos hídricos no Brasil, sendo adotados critérios de classificação para o enquadramento dos corpos d'água que levam em consideração seus usos preponderantes (BOLLMANN;MARQUES, 2000;PORTO;PORTO, 2008;COSTA et al, 2014).…”

Section: Método Para Estabelecimento De Valores De Referência De Qualunclassified

Método Para Estabelecimento De Valores De Referência De Qualidade E Classes De Uso Da Água Superficial Em Microbacias No Estado De Santa Catarina, Brasil

Pacheco

Deschamps

2019

Rev. Bras. Ciênc. Ambient. (Online)

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O conhecimento sobre a qualidade da água por meio da determinaçãode seus descritores é fundamental para o estabelecimento de políticas degestão dos recursos hídricos. Neste trabalho, sugere-se um método simplese prático para determinar valores associados aos descritores de qualidadeda água. Foram utilizados resultados acumulados ao longo de dez anos demonitoramento da qualidade da água superficial em microbacias do estadode Santa Catarina. Considerando as cinco classes de uso já estabelecidas nalegislação federal (Resolução do Conselho Nacional do Meio Ambiente –CONAMA nº 357/2005), foram determinados os limites para cada classetendo por base a distribuição dos valores dos parâmetros em estudo.A mediana foi utilizada para estabelecer os valores de referência de qualidadee o percentil 60 como limite máximo para considerar o valor do descritorcomo aceitável. O método apresentado é de fácil aplicação e os valorescalculados, comparados à legislação vigente, são mais restritivos, sugerindoboa qualidade da água.

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Section: Método Para Estabelecimento De Valores De Referência De Qualunclassified

Método Para Estabelecimento De Valores De Referência De Qualidade E Classes De Uso Da Água Superficial Em Microbacias No Estado De Santa Catarina, Brasil

Pacheco

Deschamps

2019

Rev. Bras. Ciênc. Ambient. (Online)

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“…This context shows the need of wide-ranging studies of the quality of the water for consumption, especially for concentrations of highly toxic heavy metals, capable of irritating the skin and causing gastrointestinal disorders, neurological disorders and carcinogenesis (Melville and Burchett, 2002). In addition, the concentration of heavy metals has not yet been used to evaluate the quality of the raw water utilized for public drinking water supplies in Brazil (Bollmann and Marques, 2000). This study therefore evaluated the concentrations of toxic metals in surface water and underground water consumed in natura by the Maxakali indigenous community in Brazil, including three seasonal periods.…”

Section: Introductionmentioning

confidence: 99%

High concentrations of toxic metals in water consumed by the Maxakali indigenous community in Brazil

et al. 2019

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The Maxakali is the second largest indigenous population in the state of Minas Gerais, Brazil; and parasitic diseases are its main cause of death. Problems related to the quality of water consumed by this population, added to the absence of public sanitation services, aggravate the risk of illnesses due to several water-borne pathologies. Thus, the main purpose of this paper was to evaluate the water quality consumed in natura by the Maxakali community, quantifying toxic metals in relation to the maximum values allowed by Brazilian law. A descriptive cross-sectional study was carried out with samples of water collected in surfaceand groundwater in the Maxakali villages, including three seasonal periods. Villages with the greatest number of altered measures of metals in water were Aldeias Pradinho (100%) and Água Boa (92%). The smallest number of changes were found in Aldeias Verde and Rafael (27%). The metals that appeared in the largest number of collections with values higher than recommended were Iron (50%), followed by Arsenic (46%), Aluminum (36%), Cadmium (22%) and Mercury (20%), respectively. The study identified high concentrations of toxic metals in the water consumed by the Maxakali indigenous community in Brazil.

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Optimization of storage reservoir considering water quantity and quality

Chaves

Kojiri

Yamashiki

2003

Hydrological Processes

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Abstract:Many factors influence water quality within a reservoir. Deforestation, excessive erosion, introduction of new species, domestic and industrial waste disposal and agricultural runoff are only a few examples.It is well known by specialists in water resources management that water levels in a reservoir may also affect its quality. But how these processes occur and how appropriate water levels can be maintained are very hard questions to answer. This is because of the physical and biological processes occurring inside the water body, and also due to the various demands from society concerning water uses.Nowadays, through the use of models, knowledge of some of the conditions can enable us to predict future conditions. In many cases, reservoir models, such as physical models for water quality, may predict the future water quality situation. These models have been used successfully to enhance knowledge about the interactions among the different parts inherent to the water systems.Through the combination of water quality and optimization models, this study proposes a suitable methodology for the assessment of planning operations of a storage reservoir. The purpose of this paper is to consider a multipurpose reservoir, under different water demands and uses from societies, concerning reservoir water quality.The proposed optimization is realized through the use of dynamic programming combined with stochastic techniques that can handle the probabilistic characteristics of inflow quantity and quality. For the water quality assessment, the UNEP/ILEC one-dimensional model with two layers called PAMOLARE is applied. Finally, sensitivity analysis is carried out using a genetic algorithm model.

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Bases Para a Estruturação de Indicadores de Qualidade de Águas.

Cited by 10 publications

References 1 publication

Método Para Estabelecimento De Valores De Referência De Qualidade E Classes De Uso Da Água Superficial Em Microbacias No Estado De Santa Catarina, Brasil

Método Para Estabelecimento De Valores De Referência De Qualidade E Classes De Uso Da Água Superficial Em Microbacias No Estado De Santa Catarina, Brasil

High concentrations of toxic metals in water consumed by the Maxakali indigenous community in Brazil

Optimization of storage reservoir considering water quantity and quality

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