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Publication Type J
Authors Fountoulakis, M. S., G. Sabathianakis, I. Kritsotakis, E. M. Kabourakis and T. Manios
Title Halophytes as vertical-flow constructed wetland vegetation for domestic wastewater treatment
Source Science of the Total Environment
Author Keywords Electrical conductivity Coliforms Salinity Treatment wetland floating treatment wetlands coliform bacteria removal juncus-acutus phragmites-australis nutrient removal nitrogen removal tagus estuary deicing salts heavy-metals plants
Abstract Recent findings show that halophytes have the ability to accumulate salts in their tissues, making them a very interesting group of plants for domestic wastewater treatment in constructed wetlands (CWs). In that case, it might be possible to reduce the salinity of the final effluent, which is a crucial parameter for wastewater reuse in agriculture. During this study three halophytes, Atriplex halimus, Juncus acutus and Sarcocornia perennis, were tested for phyto-desalination of domestic wastewater in a vertical flow constructed wetland (VFCW) and compared with common reeds (Phraglnites australis). In addition, the effect of this alternative vegetation on the overall performance of the system regarding organic matter, nutrients, boron and pathogen removal was monitored. The organic loading rate (OLR) was about 21 gCOD/m(2)/d and the hydraulic loading rate (HLR) was 95 mm/d in both cases. Promising results were obtained for A. halimus, which shows high biomass productivity and significant capability to accumulate salts, mainly Na, in its tissues. A positive effect on pathogen removal efficiency Was also recorded. However, nitrogen concentration in the effluent of the VFCW planted with halophytes was found to be higher than in the effluent of the VFCW planted with reeds. Finally, no significant effect on organic matter and phosphorus removal efficiency was observed from the use of halophytes in place of reeds. (C) 2017 Elsevier B.V. All rights reserved.
Author Address [Fountoulakis, M. S.; Kritsotakis, I.; Kabourakis, E. M.] Hellen Agr Org DEMETER, Inst Olive Tree Subtrop Crops & Viticulture, Dept Viticulture Hort & Plant Protect, Iraklion 71307, Greece. [Fountoulakis, M. S.; Sabathianakis, G.; Manios, T.] Technol Educ Inst Crete, Dept Agr Technol, Iraklion 71410, Greece. Fountoulakis, MS (reprint author), Technol Educ Inst Crete, Dept Agr Technol, Iraklion 71410, Greece. mfountoul@staff.teicrete.gr
ISSN 0048-9697
ISBN 0048-9697
29-Character Source Abbreviation Sci. Total Environ.
Publication Date Apr
Year Published 2017
Volume 583
Beginning Page 432-439
Digital Object Identifier (DOI) 10.1016/j.scitotenv.2017.01.090
Unique Article Identifier WOS:000394556400044

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