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Monitoring of urban and rural basins: water quality of Mourão basin.
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- Author(s): Passig, F. H.; Lima, S. B.; Carvalho, K. Q.; Halmeman, M. C. R.; Souza, P. C.; Gusmão, L. K.
- Source:
Brazilian Journal of Biology; 2015 Supplement 2, Vol. 75, p158-164, 7p- Subject Terms:
- Source:
- Additional Information
- Alternate Title: Monitoramento de bacias urbana e rural: análise integrada de qualidade de água da bacia hidrográfica do Rio Mourão. (Portuguese)
- Subject Terms:
- Abstract: The Mourão River basin is located on the central western region of the Paraná State - Brazil, between coordinates 23° 44' - 24° 25 South latitude and 52° 12' - 52° 30' West longitude, between 270 and 820 m above sea level, and 1,648.21 km2 drainage area. Water quality was evaluated by monitoring physical, chemical and microbiological parameters. Monthly samplings were performed for a year at five sites in the basin for analysis of: pH, temperature, dissolved oxygen, biochemical oxygen demand, total nitrogen, ammoniacal nitrogen, nitrite, nitrate, total phosphorus, turbidity, total solids, volatile solids and fecal coliforms. The results of the evaluated parameters showed higher values than the limits set by CONAMA Resolution 357 from 2005 for Class 2 in some samples. The Water Quality Index (WQI) indicated that 72% of samples had average quality and 28% had good quality for the Mourão River basin. Higher values of WQI were observed after rainfall period with median of 75 compared to the dry period with median of 62. The source of the Mourão River is contaminated with fecal coliforms, evidencing the real need to treat sewage in rural areas. [ABSTRACT FROM AUTHOR]
- Abstract: A Bacia Hidrográfica do Rio Mourão, localizada na porção centro ocidental do Estado do Paraná - Brasil, entre as coordenadas 23° 44' - 24° 25' Latitude Sul e 52° 12' - 52° 30' Longitude Oeste, entre 270 e 820 m acima do nível mar, possui área de drenagem de 1.648,21 km2. Nesta bacia foi avaliada a qualidade da água por meio de monitoramento de parâmetros físico-químicos e microbiológicos. Foram realizadas coletas mensais durante um ano em 5 pontos selecionados da bacia, sendo realizadas análises de: potencial Hidrogeniônico, temperatura, oxigênio dissolvido, demanda bioquímica de oxigênio, nitrogênio total, nitrogênio amoniacal, nitrito, nitrato, fósforo total, turbidez, sólidos totais, sólidos voláteis e coliformes fecais. Os resultados dos parâmetros avaliados indicaram valores superiores aos limites preconizados na Resolução CONAMA 357 de 2005 para rios de classe 2 em algumas amostras. Com a análise do Índice de Qualidade das Águas (IQA), obteve-se 72% das amostras com qualidade média e 28% com qualidade boa para a bacia do Rio Mourão. Os maiores valores do IQA foram observados na época de chuvas com mediana de 75 comparados ao período de seca com mediana de 62. Constatou-se que a nascente do rio Mourão está contaminada com coliformes fecais, mostrando a real necessidade de se tratar os esgotos sanitários no meio rural. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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