CHENMing,XIAOJun,HUANGMin-jie,et al.Nitrogen and Phosphorus Removal Efficiency of Constructed Wetland Enhanced by Basalt Fiber and Intermittent Aeration[J].China Water & Wastewater,2022,38(No.3):81-86.
Nitrogen and Phosphorus Removal Efficiency of Constructed Wetland Enhanced by Basalt Fiber and Intermittent Aeration
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
No.第3
Page:
81-86
Column:
Date of publication:
2022-02-01
- Abstract:
- To increase microbial abundance and improve nitrogen and phosphorus removal performance of constructed wetland, basalt fiber filler was packed into the traditional constructed wetland to explore the performance of the new constructed wetland for conventional pollutants removal, and the treatment efficiency and substrate enzyme activity of the wetland with or without artificial aeration was compared. In the stage without aeration, except for TP, the removal efficiencies of COD, TN and NH4+-N by basalt fiber constructed wetland were all above 70%, which increased by 5%-10% compared with the control group. In the intermittent aeration stage, the removal efficiencies of COD, TN, NH4+-N and TP by the basalt fiber constructed wetland were 87.47%, 87.92%, 92.94% and 63.52%, respectively, which increased by 12%-25% compared with the control group. In addition, the substrate enzyme activity of the basalt fiber constructed wetland before and after aeration was higher than those of the control group, and intermittent aeration could significantly increase the activity of dehydrogenase and urease in the wetland.
Last Update:
2022-02-01