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Purification capacity of constructed wetlands
Project funded by own resources |
Project title |
Purification capacity of constructed wetlands |
Principal Investigator(s) |
Alewell, Christine
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Co-Investigator(s) |
Fritsche, Johannes
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Organisation / Research unit |
Departement Umweltwissenschaften / Umweltgeowissenschaften (Alewell) |
Project start |
01.10.2007 |
Probable end |
31.12.2013 |
Status |
Completed |
Abstract |
The physical and chemical properties of three different lava sands used in constructed wetlands for municipal wastewater treatment were investigated. The aim was to identify those properties and mechanisms that render lava sands as highly efficient filter media which could substitute conventional, fluviatile sands. It was shown that although lava sands per se may be suitable filter materials, the presence of zeolite minerals within the lava sands enhances the purification efficiency tremendously. Zeolites not only increase the sorption capacity, but even more important, they are able to absorb water in large amounts, which in turn leads to stronger swelling. The latter reduces hydrological conductivity considerably, resulting in a longer contact time to eliminate pollutants. A simple mineralogical survey of filter materials for the presence of zeolites may render many installations of constructed wetlands successful. |
Keywords |
constructed wetlands, waste water, zeolithes |
Financed by |
Other funds
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Published results () |
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ID |
Autor(en) |
Titel |
ISSN / ISBN |
Erschienen in |
Art der Publikation |
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410762 |
Bruch, Ingo; Fritsche, Johannes; Bänninger, Dominik; Alewell, Ulrike; Sendelov, Michael; Hürlimann, Heinz; Hasselbach, Ralf; Alewell, Christine |
Improving the treatment efficiency of constructed wetlands with zeolite-containing filter sands |
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Bioresource Technology |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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2828907 |
Bruch, I.; Alewell, U.; Hahn, A.; Hasselbach, R.; Alewell, C. |
Influence of soil physical parameters on removal efficiency and hydraulic conductivity of vertical flow constructed wetlands |
0925-8574 |
Ecological engineering |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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Cooperations () |
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ID |
Kreditinhaber |
Kooperationspartner |
Institution |
Laufzeit - von |
Laufzeit - bis |
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984264 |
Alewell, Christine |
Hasselbach, Ralf |
EVS Saarland |
01.10.2007 |
31.12.2015 |
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984260 |
Alewell, Christine |
Bruch, Ingo, Dr. |
Consulting Büro Bruch-Alewell |
01.10.2007 |
31.12.2015 |
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2365889 |
Alewell, Christine |
Dr. Andreas Hahn |
ZetA Partikelanalytik GmbH, Mainz |
12.07.2008 |
31.12.2015 |
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05/10/2023
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