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Performance of novel constructed wetlands for treating solar septic tank effluent

To improve treatment performance of the solar septic tank technology, novel constructed wetland systems have been proposed as an effective post-treatment system. This study aimed to investigate the treatment performance of the multi-soil layer based constructed wetland (MSL-CW) and comparing with th...

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Autores principales: Koottatep, Thammarat, Pussayanavin, Tatchai, Khamyai, Sopida, Polprasert, Chongrak
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7705213/
https://www.ncbi.nlm.nih.gov/pubmed/33254912
http://dx.doi.org/10.1016/j.scitotenv.2020.142447
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author Koottatep, Thammarat
Pussayanavin, Tatchai
Khamyai, Sopida
Polprasert, Chongrak
author_facet Koottatep, Thammarat
Pussayanavin, Tatchai
Khamyai, Sopida
Polprasert, Chongrak
author_sort Koottatep, Thammarat
collection PubMed
description To improve treatment performance of the solar septic tank technology, novel constructed wetland systems have been proposed as an effective post-treatment system. This study aimed to investigate the treatment performance of the multi-soil layer based constructed wetland (MSL-CW) and comparing with the modified constructed wetland (mCW) for treating solar septic tank effluent in long-term operation. Pilot-scale MSL-CW and mCW units were operated in parallel under the same conditions during the period of 2016–2019. Removal efficiencies of TCOD, SCOD and TBOD in the MSL-CW were not significantly different (p < 0.05) from those of the mCW unit, which were 70–72%, 63–68% and 78–82%, respectively. The removal efficiencies of TSS, TKN, NH(4)-N and TP were found in the same magnitude in both units. The total coliform and E.coli counts in the effluent of MSL-CW and mCW units were reduced from 10(5) MPN/100 mL to be lower than 10(3) MPN/100 mL. These long-term operational results demonstrated that the effluent from the MSL-CW and mCW units could meet the global standards of non-sewered sanitation systems and the WHO guidelines. The effects of seasonal variations and plant harvesting on the monthly treatment performance are discussed in this study.
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spelling pubmed-77052132021-02-01 Performance of novel constructed wetlands for treating solar septic tank effluent Koottatep, Thammarat Pussayanavin, Tatchai Khamyai, Sopida Polprasert, Chongrak Sci Total Environ Article To improve treatment performance of the solar septic tank technology, novel constructed wetland systems have been proposed as an effective post-treatment system. This study aimed to investigate the treatment performance of the multi-soil layer based constructed wetland (MSL-CW) and comparing with the modified constructed wetland (mCW) for treating solar septic tank effluent in long-term operation. Pilot-scale MSL-CW and mCW units were operated in parallel under the same conditions during the period of 2016–2019. Removal efficiencies of TCOD, SCOD and TBOD in the MSL-CW were not significantly different (p < 0.05) from those of the mCW unit, which were 70–72%, 63–68% and 78–82%, respectively. The removal efficiencies of TSS, TKN, NH(4)-N and TP were found in the same magnitude in both units. The total coliform and E.coli counts in the effluent of MSL-CW and mCW units were reduced from 10(5) MPN/100 mL to be lower than 10(3) MPN/100 mL. These long-term operational results demonstrated that the effluent from the MSL-CW and mCW units could meet the global standards of non-sewered sanitation systems and the WHO guidelines. The effects of seasonal variations and plant harvesting on the monthly treatment performance are discussed in this study. Elsevier 2021-02-01 /pmc/articles/PMC7705213/ /pubmed/33254912 http://dx.doi.org/10.1016/j.scitotenv.2020.142447 Text en © 2020 The Author(s) http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Koottatep, Thammarat
Pussayanavin, Tatchai
Khamyai, Sopida
Polprasert, Chongrak
Performance of novel constructed wetlands for treating solar septic tank effluent
title Performance of novel constructed wetlands for treating solar septic tank effluent
title_full Performance of novel constructed wetlands for treating solar septic tank effluent
title_fullStr Performance of novel constructed wetlands for treating solar septic tank effluent
title_full_unstemmed Performance of novel constructed wetlands for treating solar septic tank effluent
title_short Performance of novel constructed wetlands for treating solar septic tank effluent
title_sort performance of novel constructed wetlands for treating solar septic tank effluent
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7705213/
https://www.ncbi.nlm.nih.gov/pubmed/33254912
http://dx.doi.org/10.1016/j.scitotenv.2020.142447
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