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Article

An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test

1
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
2
Pearl River Hydraulic Research Institute, Guangzhou 510611, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(9), 1828; https://doi.org/10.3390/w11091828
Received: 6 August 2019 / Revised: 28 August 2019 / Accepted: 29 August 2019 / Published: 3 September 2019
(This article belongs to the Section Water Quality and Contamination)
Water eutrophication is one of the most serious environmental problems in urban lakes and ponds due to the excessive nutrients. To deal with this problem, the development of methods for supporting ecological rehabilitation has been undertaken. Meanwhile, the trophic interactions during rehabilitation also have been analyzed. In this study, a new technique was employed to solve the water eutrophication problems in an urban pond. To evaluate the water eutrophication at a pilot scale, an enhanced artificial floating-type biological treatment system (FBTS) composed of a floating bed, macrophyte, artificial biofilm carrier (polyurethane sponge) and aerator could be used as equipment for urban pond remediation. In addition, FBTS was employed to decrease the total nitrogen (TN), ammonia-nitrogen (NH3-N), total phosphorus (TP) and chemical oxygen demand (COD) in water. Meanwhile, the changes of water qualities were monitored in the remediation process, and differences in phytoplankton functional group diversity were also registered. Cyanobacteria would decrease after the removal of P, and the diatom assemblage composition changed. The dominant species Cyanophyta were transformed to co-existed with Bacillariophyta, Pyrrophyta and Chlorophyta due to the improvement of water quality. Consequently, this new FBTS could be a promising eco-technology for the removal of nitrogen and phosphorus from eutrophic water, and even could promote the phytoplankton succession. View Full-Text
Keywords: floating-type biological treatment system; eutrophic water; polyurethane sponge; plant uptake; phytoplankton succession floating-type biological treatment system; eutrophic water; polyurethane sponge; plant uptake; phytoplankton succession
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MDPI and ACS Style

Wang, Y.; Yin, X.; Cai, Y.; Yang, Z. An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test. Water 2019, 11, 1828. https://doi.org/10.3390/w11091828

AMA Style

Wang Y, Yin X, Cai Y, Yang Z. An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test. Water. 2019; 11(9):1828. https://doi.org/10.3390/w11091828

Chicago/Turabian Style

Wang, Yijie, Xinan Yin, Yanpeng Cai, and Zhifeng Yang. 2019. "An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test" Water 11, no. 9: 1828. https://doi.org/10.3390/w11091828

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