Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/7421
Título: Polishing domestic wastewater on a subsurface flow constructed wetland: organic matter removal and microbial monitoring
Autor: Mina, I. Aguiar-Pinto
Costa, M.
Matos, A.
Calheiros, C. Sousa Coutinho
Castro, P. M. L.
Palavras-chave: Microbial communities
Constructed wetland
Phragmites australis
Domestic wastewater
Data: 2011
Editora: Taylor & Francis
Citação: MINA, I. Aguiar-Pinto... [et al.] - Polishing domestic wastewater on a subsurface flow constructed wetland: organic matter removal and microbial monitoring. International Journal of Phytoremediation. ISSN 1522-6514. Vol. 13, n.º 10 (2011). p. 947–958
Resumo: Microbial monitoring of constructed wetlands (CWs) treating domestic wastewater is generally scarce, despite the need of more knowledge about its biocenosis. The sanitation quality of a wastewater treated in a CW is a crucial aspect, mainly when the receiving water body is used as a swimming and/or recreation area. The present study was carried out in a horizontal subsurface flow CW planted with Phragmites australis receiving pre-treated domestic wastewater (mean flow 50 m3 day−1), from a population of about 300 inhabitants. The monitoring programme undertaken during the first year operation, revealed removal efficiencies of 61% BOD5, 44% COD, and 65% TSS for inlet water with ca. 90 mg L−1 BOD5, 157 mg L−1 COD, and 17 mg L−1 TSS. Total Coliform (TC) and Faecal Coliform (FC) bacteria were removed from wastewater (mean inlet values of 5 × 106 CFU 100 mL−1 TC and of 9 × 105CFU 100 mL−1 FC), with efficiencies of 92 and 97%, respectively. The dynamics of microbial communities established in the system assessed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), had revealed a high bacterial diversity within the system, with no relevant differences in composition at the CW inlet and outlet but exhibiting temporal differences in bacterial communities.
Peer review: yes
URI: http://hdl.handle.net/10400.14/7421
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/15226514.2010.532182
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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