An experimental use of floating treatment wetlands (FTWs) to reduce phytoplankton growth in freshwaters

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• 作者：Timothy G. Jones^a ; ^{t.jones@bangor.ac.uk} ; Naomi Willis^b ; Rachel Gough^a ; Chris Freeman^a
• 关键词：Phytoplankton ; Chlorophyll ; Dissolved organic carbon (DOC) ; Eutrophication ; Floating treatment wetlands (FTWs) ; Nitrate ; Phosphate ; Phragmites australis
• 刊名：Ecological Engineering
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：99
• 期：Complete
• 页码：316-323
• 全文大小：1046 K
• 卷排序：99

文摘

Eutrophication and the formation of phytoplankton blooms in freshwaters can be detrimental to water quality and biological health and produce organic matter that can be difficult to remove during water treatment processes. With the frequency of phytoplankton blooms increasing, remediation solutions are becoming increasingly popular. This study investigated the use of a peat-based floating treatment wetland (FTW) for reducing phytoplankton growth in eutrophic waters. Over a four-week period, the FTWs were able to reduce chlorophyll a concentrations by 80%, through sequestration of nitrate and phosphate and possibly due to the direct inhibitory properties of phenolic compounds. Although there are concerns about the leaching of dissolved organic carbon (DOC) from the FTWs, this may be more than offset by the beneficial suppression of phytoplankton growth and the resulting reduced input of ‘untreatable’ low molecular weight DOC.