Water quality retrieval and algae inhibition from eutrophic freshwaters with iron-rich substrate based ecological floating beds treatment

Ecological floating rafts in restoration of eutrophic freshwaters were deemed to a frequently used method. In this study, a manipulative experiment using ecological floating rafts based on iron-rich substrate (IRS) was conducted. The approach was attempted to study the nutrient removal efficiency an...

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Veröffentlicht in:The Science of the total environment 2020-04, Vol.712, p.135584-135584, Article 135584
Hauptverfasser: Hu, Zhifeng, Li, Desheng, Guan, Detian
Format: Artikel
Sprache:eng
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Zusammenfassung:Ecological floating rafts in restoration of eutrophic freshwaters were deemed to a frequently used method. In this study, a manipulative experiment using ecological floating rafts based on iron-rich substrate (IRS) was conducted. The approach was attempted to study the nutrient removal efficiency and algae inhibition effect of IRS. The results showed that 98.2% chlorophyll-a (chl-a) removal rate was achieved in 7-day restoration by IRS accompanied with high nutrient removal efficiency. In addition, iron-rich substrate based ecological floating beds could reached 82.1% chl-a removal rate and 98.5% total phosphorus (TP) removal rate with the increasing activity of aquatic organisms through a 50-day pilot scale experiment. The findings imply that iron-rich substrate-based ecological floating beds are an alternative method for ecological restoration of eutrophic freshwaters. [Display omitted] •Iron-rich substrate is an effective algal inhibitor for algal blooms control.•Water improvement can be achieved by specific ecological floating bed.•Freshwater eutrophication is reduced by specific ecological floating bed.•Iron-rich substrate is a carrier with chemical and biological restoration.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2019.135584