MA Jing-wei,LIN Xiao,SHI Zhou,et al.Control Effect of Combined Process of Biofilter and Bioretention Ponds on CSO Pollution[J].China Water & Wastewater,2021,37(19 19):131.
Control Effect of Combined Process of Biofilter and Bioretention Ponds on CSO Pollution
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
19 19
Page:
131
Column:
Date of publication:
2021-10-01
- Abstract:
- The removal of pollutants in the combined sewer overflow (CSO) by a combined process of biofilter and bioretention pond was investigated to solve this serious pollution problem. Firstly, the N and P adsorption and desorption characteristics of four kinds of biofilter media (gravel, volcanic rock, ceramsite and zeolite) were discussed. Then, the removal performance of the CSO pollutants in the biofilter containing different media was analyzed by simulated column experiments. The volcanic rock medium had the best removal effect on the CSO pollutants. On this basis, the biofilter with medium of the volcanic rock and the biofilter with the modified medium were combined to explore the removal performance of the CSO pollutants under different hydraulic loads and different pollution loads. The combined process had a better removal effect on the CSO pollutions when the hydraulic loads were low, while the facility had an unstable removal effect on the TN and COD when the hydraulic load was high. The combined process had a good removal effect on the CSO pollutants under different pollution loads.
Last Update:
2021-10-01