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Bioindicators assessing water quality and environmental impacts of water treatment plant sludge.

Alves Abreu da Costa, Talitha R.; Weber, Olmar Baller; Pestana, Carlos J.; Capelo-Neto, José

Authors

Talitha R. Alves Abreu da Costa

Olmar Baller Weber

Carlos J. Pestana

José Capelo-Neto

Abstract

This study had as objectives to assess water quality using macroinvertebrate communities in Gaviao artificial reservoir (Brazil), used to supply potable water to 2.5 million people, and to evaluate how these organisms responded to the discharge of water treatment sludge into a natural wetland. A total of 1,621 specimens across 23 taxa were identified. Mollusca were the dominant and most frequent group while Insecta presented the most richness. Based on feeding mode, there were more predator organisms than scrapers. The Biological Monitoring Working Party (BMWP') method showed to be more sensible to water quality variations than ASPT index, going from polluted to questionable water quality more frequently. The chemical parameters analysed showed no significant variations and were not a sensitive method for assessing water quality. No organisms could be found downstream of the sludge discharge point, indicating a high impact of sludge disposal on local biota.

Journal Article Type Article
Publication Date Mar 31, 2017
Journal International journal of environment and sustainable development
Print ISSN 1474-6778
Electronic ISSN 1478-7466
Publisher Inderscience
Peer Reviewed Peer Reviewed
Volume 16
Issue 1
Pages 25-42
Institution Citation ABREU DA COSTA, T.R.A., WEBER, O.B., PESTANA, C.J. and CAPELO-NETO, J. 2017. Bioindicators assessing water quality and environmental impacts of water treatment plant sludge. International journal of environment and sustainable development [online], 16(1), pages 25-42. Available from: https://doi.org/10.1504/IJESD.2017.10001350
DOI https://doi.org/10.1504/IJESD.2017.10001350
Keywords Macroinvertebrates; Bioindicators; Artificial reservoir; Water quality; Water treatment sludge

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