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Performance of pilot-scale vertical flow constructed wetlands with and without the emergent macrophyte Spartina alterniflora treating mariculture effluent

By Wilson Treger Zydowicz Sousa, Clarice Maria Neves Panitz and Sidinei Magela Thomaz

Abstract

Vertical flow constructed wetlands, planted with and without Spartina alterniflora, were tested for the treatment of mariculture wastewater. Wetlands with and without the emergent macrophyte produced reductions of 89 and 71% for inorganic solids, 82 and 96% for organic solids, 51 and 63% for total nitrogen, 82 and 92% for ammoniacal nitrogen, 64 and 59% for orthophosphate, and 81 and 89% for turbidity, respectively. Wetlands with S. alterniflora showed denitrification tendencies, while wetlands without S. alterniflora had higher oxygen levels leading to nitrification. The results suggest the fundamental role of oxygen controlling the purification processes as well as the potential of constructed wetlands to treat mariculture effluents

Topics: artificial wetlands, dissolved oxygen, nitrification, denitrification, pollutant removal, mariculture effluent, Biotechnology, TP248.13-248.65, Chemical technology, TP1-1185, Technology, T, DOAJ:Biotechnology, DOAJ:Life Sciences, DOAJ:Biology and Life Sciences
Publisher: Instituto de Tecnologia do ParanĂ¡ (Tecpar)
Year: 2011
DOI identifier: 10.1590/S1516-89132011000200024
OAI identifier: oai:doaj.org/article:8a28e8c4571c473480e7d1d2e11ea092
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