Examining the Purification Effect of Euryale Ferox On Eutrophic Rivers Along the Huaihe River

Abstract

Chen Mao-hua, Yang Yongxue and Liu Kun

We conducted a comprehensive analysis to assess the purification effect of Euryale ferox, a native aquatic plant, on eutrophic rivers in rural areas along the Huaihe River. This involved simulating variations in the total nitrogen (TN), ammonia nitrogen (NH4+-N), total phosphorus (TP), chemical oxygen demand (CODCr), pH, soluble salt content (SSC), and dissolved oxygen (DO) within the eutrophic river pool. Euryale ferox was cultivated in a eutrophic river pool within rural areas along the Huaihe River. Subsequently, an extensive analysis was conducted to assess the purification effects of Euryale ferox on river ecosystems. The results indicated that Euryale ferox, an indigenous aquatic plant in the Huaihe River, exerted a beneficial purifying influence on eutrophic rivers. This plant demonstrated a robust capacity to absorb NH4+-N and TP, ranging from 95.53% to 98.45% and 99.50% to 99.65%, respectively, in the water body during its growth, thereby achieving excellent purification performance. However, the purification of Euryale ferox for TN and CODCr in eutrophic rivers remains unclear. Notably, the pH in the aquatic environment demonstrated a noteworthy increase from 11.05% to 11.61%, while the EC value increased from 21.12% to 22%. Additionally, the DO levels exhibited a substantial increase, ranging from 3.82 to 21.77 times. It is essential to acknowledge that rural rivers are subject to various influences, including river velocity, submerged vegetation, aquatic fauna, and human activities. Further observation of practical applications is vital to comprehensively understand the implications of these findings.

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