Removal of trace elements in three horizontal sub-surface flow constructed wetlands in the Czech Republic

被引：116

作者：

Kropfelova, Lenka ^{[1
]}

Vymazal, Jan ^{[1
,2
]}

Svehla, Jaroslav ^{[3
]}

Stichova, Jana ^{[3
]}

机构：

[1] ENKI Ops, Trebon 37901, Czech Republic

[2] Czech Univ Life Sci Prague, Fac Environm Sci, Dept Landscape Ecol, Kostelec Nad Cerbymi Les 28163, Czech Republic

[3] Univ S Bohemia Ceske Budejovice, Fac Agr, Dept Chem, Ceske Budejovice 37005, Czech Republic

来源：

ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 04期

关键词：

Constructed wetlands; Czech Republic; Municipal wastewater; Sub-surface flow; Trace elements; MINE DRAINAGE; METAL REMOVAL; HEAVY-METALS; ZINC; ACCUMULATION; MANGANESE; CHROMIUM; WATER; IRON; TRANSFORMATIONS;

D O I：

10.1016/j.envpol.2008.12.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1186 / 1194

页数：9

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