Treatment performance of a multistage constructed wetland at 69° north, Norway
作者:
HanneM. Giæver,
期刊:
Journal of Environmental Science and Health, Part A
(Taylor Available online 2000)
卷期:
Volume 35,
issue 8
页码: 1377-1388
ISSN:1093-4529
年代: 2000
DOI:10.1080/10934520009377041
出版商: Taylor & Francis Group
关键词: Cold climate;constructed wetland;horizontal subsurface flow;light‐weight aggregates;nitrification;phosphorus binding;pre‐treatment filter
数据来源: Taylor
摘要:
Fagernes, the only constructed wetland for wastewater treatment in the north of Norway, is located in the municipality of Lenvik. Despite the challenges presented by a cold climate the wetland has been operating well, and chemical and microbiological analyses shows that treatment efficiencies are high. This is particularly the case for COD and phosphorus. Total treatment efficiency for Tot‐N was very high (78%) in comparison with Haugstein, a similar wetland system in southern Norway. In Fagernes, a vertical flow pre‐treatment filter with light‐weight aggregates (Filtralite) aerates the wastewater, stimulates nitrification and binds phosphorus. Both horizontal subsurface flow wetlands (with sand and with light‐weight aggregates) have high phosphorous removal rates.
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