Treatment of greywater using a non-aerated combined horizontal and vertical flow constructed wetland
Human, animal, and plant health is universally paramount, yet the release of poorly treated wastewater into the environment poses a significant risk to all life forms. Hence the need to employ wastewater treatment technologies to curb these health risks. Due to the need to adopt sustainable wastewat...
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Veröffentlicht in: | Journal of water reuse and desalination 2024-09, Vol.14 (3), p.448-458 |
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container_title | Journal of water reuse and desalination |
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creator | Bryant, Isaac Mbir Akpah, Daniel Ogum, Mary Aku Gyamfi, Emmanuella Ernestina Baka, Nancy |
description | Human, animal, and plant health is universally paramount, yet the release of poorly treated wastewater into the environment poses a significant risk to all life forms. Hence the need to employ wastewater treatment technologies to curb these health risks. Due to the need to adopt sustainable wastewater treatment technologies, this study investigated the use of a non-aerated hybrid horizontal and vertical flow constructed wetland for the removal of heavy metals and microorganisms from greywater. This was done at six different hydraulic retention times. Results showed significant reductions (p < 0.05) in heavy metal (manganese, zinc, cadmium, magnesium, chromium, and iron) concentrations, with some showing compliance to Ghana's Environmental Protection Agency and the United Kingdom National Environment Regulation recommended discharge limits. Heavy metal concentrations in effluent samples ranged from as low as 0.00 ± 0.15–0.23 ± 0.06 mg/L. Furthermore, there were significant reductions in Escherichia coli and Salmonella typhi (p < 0.05), which also showed compliance to Ghana's Environmental Protection Agency effluent discharge standards. The effluents from the system at HRT 3 days showed high removal efficiency ranges of 82–90% of bacteria. It is recommended that hybrid constructed wetlands should be incorporated in the treatment of greywater. |
doi_str_mv | 10.2166/wrd.2024.042 |
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source | DOAJ Directory of Open Access Journals; Alma/SFX Local Collection |
subjects | Aeration Animal human relations Artificial wetlands Bacteria Cadmium Chromium Design Discharge E coli Effluent standards Effluents Environmental protection Feces Greywater Health risks Heavy metals Hydraulics Magnesium Manganese Metal concentrations Microorganisms Salmonella Sedimentation & deposition Vertical flow Vertical mixing Wastewater discharges Wastewater treatment Water reuse Wetlands Zinc |
title | Treatment of greywater using a non-aerated combined horizontal and vertical flow constructed wetland |
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