A Study on Water Hyacinth Purifying Effect on Different Levels of Eutrophic Water

Abstract:

In this experiment, water hyacinth presents a good purification effect in five kinds of eutrophic waters with initial total nitrogen (TN) and total phosphorus (TP) concentrations in between 8.34~20.45 mg/L and 0.78~1.51 mg/L. After two weeks of purification, TN and TP concentrations of eutrophic waters are reduced to 1.78~5.68 mg/L and 0.25~0.312 mg/L, and TN and TP removal rates are 72.22~78.65% and 67.95~79.34%. Water hyacinth’s TN removal rate decreases as TN initial concentration increases; TP removal rate increases as TP initial concentration increases. Water hyacinth’s average total biomass in eutrophic water has increased by 0.944~1.084 kg/m², and the average bio-dry-weight has increased by 0.0470~0.0547 kg/m². The average total biomass and average bio-dry-weight of water hyacinth increase as the eutrophication deepens.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 1899-1902
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.1899
• Online since: June 2014
• Authors: Su Chen, Lei Chao*, Ning Chen, Lin Shan Wang, Xin Liu, Li Na Sun
• Keywords: Eutrophic Water, Growth Characteristics, Nitrogen, Phosphorus, Water Hyacinth

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