Is removal of organics and suspended solids in horizontal sub-surface flow constructed wetlands sustainable for twenty and more years?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F19%3AN0000009" target="_blank" >RIV/60460709:41330/19:N0000009 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1385894719315116" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894719315116</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2019.122117" target="_blank" >10.1016/j.cej.2019.122117</a>

Result language
angličtina
Original language name
Is removal of organics and suspended solids in horizontal sub-surface flow constructed wetlands sustainable for twenty and more years?
Original language description
Constructed wetlands with horizontal subsurface flow were the most common type of constructed wetlands used for municipal sewage during the 1980s and 1990s. Because of predominant anoxic and anaerobic conditions in the filtration beds,this CW type was primarily used for removal of organics and suspended solids. HF CWs were replaced with vertical and hybrid CWs, however many HF CWs are still in operation but very scarce information exists on a long term treatment performance. The present study evaluated treatment performance of 114 Czech HF CWs with special attention to 17 systems that have been in operation for at least 20 years. The study clearly revealed that if the HFCWs are properly loaded, their treatment performance is very steady with outflow concentrations of less than 15 mgl of BOD5 and TSS and less than 50 mgl COD. The results from systems that have been in operation for more than 20 years revealed that treatment efficiency actually increased over the years of operation with outflow concentrations lower as compared to initial phase of operation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10503 - Water resources

Project
<a href="/en/project/7F14341" target="_blank" >7F14341: Assessing water quality improvement options concerning nutrient and pharmaceutical contaminants in rural watersheds</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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