Open AccessEffect of river ecological restoration by symbiotic system of aquatic plants
Author(s) -
Huan Xiao,
Jianna Jia,
Qiang Chu,
Liankun Liu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/621/1/012086
Subject(s) - hydrilla , macrophyte , aquatic plant , phytoremediation , ecology , restoration ecology , pollutant , environmental science , biology , contamination
Integrated effects of three different combination of aquatic macrophytes community (emergent, floating-leaved and submerged species) on river ecological restoration were investigated. LNH (Lythrum salicaria L, Nymphaea L and Hydrilla varticillata) showed the best performance in terms of COD removal yet LNV (Lythrum salicaria L, Nymphaea L and Vallisneria natans (Lour.) Hara) ranked first in terms of TN removal and TP removal. Due to the significant distinction of LNV on TN removal, LNV was suggested as the best option for river ecological restoration using combination of aquatic macrophytes community. A drastic reduction of pollutants in the early phase of treatment was observed for both COD and nutrition removal process. However, the timing of drastic reduction for COD was Day 5, while that of TN and TP was Day 17. Absorbtion and phytoremediation were the main process that contribute to the rapid removal of pollutants.