Feasibility assessment: application of ecological floating beds for polluted tidal river remediation

Environmental Monitoring and Assessment
Shaoling SunJian Yang

Abstract

The remediation of polluted coastal rivers is a global challenge in the environmental field. The objective of this study was to investigate the remediation feasibility of a high-salinity river using water spinach (WS) and sticky rice (SR) in hydroponic floating-bed systems. In this study, the total nitrogen (TN) removal rates were 89.7, 92.3, 85.1, and 75.2% in the WS floating-bed system and 81.2 and 78.9% in the SR floating-bed system under different salinities (2-31 psu). Additionally, the total phosphorus (TP) removal rates were 94.4, 96.4, 93.5, and 75.2% in the WS floating-bed system and 75.7 and 80.0% in the SR floating-bed system under different salinities. The results indicate that WS and SR significantly contributed to the remediation of a polluted tidal river. Additionally, increased salinity suppressed the removal of ammonium and phosphate by WS and SR. The salt tolerance of WS was greater than that of SR, which indicated that WS was a more appropriate choice for treating river contamination.

References

May 1, 2008·Annual Review of Plant Biology·Rana Munns, Mark Tester
May 29, 2009·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Wenxiang Li, Zhongjie Li
Jan 18, 2011·Journal of Environmental Sciences (China)·Xiaohong Zhou, Guoxiang Wang
May 12, 2016·Environmental Science and Pollution Research International·Zhongbing ChenPeter Kuschk
Jun 28, 2016·Environmental Pollution·Qiyao SunRobert J G Mortimer

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