Study on the Remediation Effect of Aquatic Plants on Eutrophication in Urban Park Water Bodies
This study addresses the issue of eutrophication in urban park water bodies.Common aquatic plants such as Ranunculus,Nymphaea,and Myriophyllum were selected for their ability to thrive in water.Their various combinations and growth stages were compared to analyze their effectiveness in removing nutrients from mildly,moderately,and severely eutrophic water bodies.The findings indicate that the seven combinations of these three aquatic plants exhibit nutrient removal effects during different growth stages.Among them,the combination of Ranunculus,Nymphaea,and Myriophyllum shows the most promising results.Particularly for moderately eutrophic water bodies,this combination demonstrated removal rates of 97.0%for total nitrogen,89.2%for total phosphorus,75.5%for ammonia nitrogen,and 58.2%for chemical oxygen demand.Overall comparison reveals that the removal efficiency for total nitrogen is the highest,ranging from 68.0%to 97.0%,followed by total phosphorus at 72.2%to 97.2%.Furthermore,as substrate concentration decreases,the removal rates generally exhibit a declining trend over the growth cycle of the vegetation.These research findings provide a theoretical basis for ecological restoration of urban park water bodies.
aquatic plantspurification efficiencyeutrophicationpark water bodies
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