LEIPei-shu,LIQing,SUNJian,et al.Performances of Two Kinds of Subsurface Flow Constructed Wetlands for Treatment of Effluent from Secondary Biochemical Process[J].China Water & Wastewater,2022,38(15):115-120.
Performances of Two Kinds of Subsurface Flow Constructed Wetlands for Treatment of Effluent from Secondary Biochemical Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第15期
Page:
115-120
Column:
Date of publication:
2022-08-01
- Keywords:
- constructed wetland; vertical subsurface flow; horizontal subsurface flow; hydraulic load; effluent from secondary biochemical process; removal performance
- Abstract:
- Vertical and horizontal subsurface flow wetlands were applied to treat secondary biochemical effluent from a wastewater treatment plant in Wuhan. The removal effect of pollutants under different hydraulic loads was investigated, and correlation analysis was carried out. There was no significant difference in the removal efficiency of COD, NH3-N, TN and TP between the two wetlands. Both wetlands had better removal performances of COD and TN when the hydraulic load was 0.25 m3/(m2·d), and better removal performances of NH3-N and TP were obtained when the hydraulic load was 1.00 m3/(m2·d). The correlation analysis showed that there was a significant negative correlation between hydraulic load and TN removal efficiency in both wetlands. Pollutant concentrations in influent greatly affected the purification performance of the wetlands, and there were significant correlations among the removal efficiencies of water quality indexes.
Last Update:
2022-08-01