Removal of trace elements in three horizontal sub-surface flow constructed wetlands in the Czech Republic
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
19124182
DOI
10.1016/j.envpol.2008.12.003
PII: S0269-7491(08)00674-X
Knihovny.cz E-zdroje
- MeSH
- chemické látky znečišťující vodu * analýza MeSH
- čištění vody metody MeSH
- mokřady MeSH
- odpad tekutý - odstraňování metody statistika a číselné údaje MeSH
- regenerace a remediace životního prostředí metody MeSH
- těžké kovy * analýza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- chemické látky znečišťující vodu * MeSH
- těžké kovy * MeSH
Between March 2006 and June 2008 removal of 34 trace elements was measured on a monthly basis at three horizontal-flow constructed wetlands in the Czech Republic designed to treat municipal wastewater. In general, the results indicated a very wide range of removal efficiencies among studied elements. The highest degree of removal (average of 90%) was found for aluminum. High average removal was also recorded for zinc (78%). Elements removed in the range of 50-75% were uranium, antimony, copper, lead, molybdenum, chromium, barium, iron and gallium. Removal of cadmium, tin, mercury, silver, selenium and nickel varied between 25 and 50%. Low retention (0-25%) was observed for vanadium, lithium, boron, cobalt and strontium. There were two elements (manganese and arsenic) for which average outflow concentrations were higher compared to inflow concentrations. Reduced manganese compounds are very soluble and therefore they are washed out under anaerobic conditions.
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