ZHANG Ze-rui,LI Wei-hua,HU Shu-heng,et al.Effect of Different Plants on Purification of Eutrophic Water Bodies and Community Analysis[J].China Water & Wastewater,2021,37(7 7):78-84.
Effect of Different Plants on Purification of Eutrophic Water Bodies and Community Analysis
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
7 7
Page:
78-84
Column:
Date of publication:
2021-04-01
- Keywords:
- eutrophication; floating bed plants; community analysis; Rohdea japonica; Epiperemnum aureum; Echinodorus grisebachii
- Abstract:
- New floating bed plants with high purification efficiency to eutrophic water bodies were explored. The differences of phytoplankton communities and microbial communities in water bodies purified by different floating bed plants were investigated, which aimed to promote the application of ecological floating bed technology in polluted water body treatment. Artificially prepared eutrophic sewage was treated by Epipremnum aureum, Rohdea japonica and Echinodorus grisebachii in an outdoor environment for 48 days. The plant growth and purification efficiency were compared, and the structure and diversity of phytoplankton and microbial communities were analyzed. All the three plants could survive, and the root system of Rohdea japonica developed well and its biomass increased obviously. The degradation trends of dissolved phosphate(DP), TN and TOC in four water tanks were identical. At the end of the experiment, the Rohdea japonica group could significantly inhibit the growth of algae in the water body with low algae density and single algae species. In Rohdea japonica group, the removal rates of DP, TN, and TOC were relatively fast and the purification performance was better, in which the removal efficiency was 95.0%, 97.57%, and 92.53%, respectively. Pollutants absorption and utilization of algae was the main reason for the decrease of various pollution indicators in the control group.
Last Update:
2021-04-01