. . . "0925-8574" . . "Long-term performance of constructed wetlands with horizontal sub-surface flow: Ten case studies from the Czech Republic" . "000287464400006" . "NL - Nizozemsko" . "10"^^ . "Long-term performance of constructed wetlands with horizontal sub-surface flow: Ten case studies from the Czech Republic"@en . "Constructed wetlands with horizontal sub-surface flow (HF CWs) have been in use in the Czech Republic since 1989. Evaluation of the long-term performance of HF CWs in the Czech Republic indicates that removal of organics and suspended solids is very effective; efficiencies are steady throughout the year and are not affected by season and also by the length of operation. Phosphorus removal is seasonally steady but low as Czech constructed wetlands do not use special filtration media with high sorption capacity. Removal of ammonia-N is limited by lack of dissolved oxygen in filtration beds caused by permanent saturation. The removal of ammonia-N is steady over the life of operation but is affected by season, however,the decrease in ammonia removal efficiency during winter is not large." . . . "1"^^ . "[33ED14A65EB0]" . "RIV/60460709:41330/11:51659" . "constructed wetlands, Czech Republic, long-term performance, nitrogen, organics, seasonal effect, suspended solids"@en . . "Long-term performance of constructed wetlands with horizontal sub-surface flow: Ten case studies from the Czech Republic"@en . "P(2B06023), P(GA206/06/0058), S" . "Vymazal, Jan" . . "1"^^ . . . . . . "Ecological Engineering" . . "10.1016/j.ecoleng.2009.11.028" . "Constructed wetlands with horizontal sub-surface flow (HF CWs) have been in use in the Czech Republic since 1989. Evaluation of the long-term performance of HF CWs in the Czech Republic indicates that removal of organics and suspended solids is very effective; efficiencies are steady throughout the year and are not affected by season and also by the length of operation. Phosphorus removal is seasonally steady but low as Czech constructed wetlands do not use special filtration media with high sorption capacity. Removal of ammonia-N is limited by lack of dissolved oxygen in filtration beds caused by permanent saturation. The removal of ammonia-N is steady over the life of operation but is affected by season, however,the decrease in ammonia removal efficiency during winter is not large."@en . . "RIV/60460709:41330/11:51659!RIV12-MSM-41330___" . . "1" . . . . "37" . "209944" . . "Long-term performance of constructed wetlands with horizontal sub-surface flow: Ten case studies from the Czech Republic" . . "41330" . .