Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance
Bioretention is commonly used for runoff pollution control. The first flush strength of pollutants can affect bioretention performance. To examine the influence of the first flush strength on bioretention performance, bioretention columns filled with garden soil as the main media were established. A...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-09-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/86/6/1478 |
| _version_ | 1811249522547884032 |
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| author | Wei Zhang Kexin Tao Huichao Sun Wu Che |
| author_facet | Wei Zhang Kexin Tao Huichao Sun Wu Che |
| author_sort | Wei Zhang |
| collection | DOAJ |
| description | Bioretention is commonly used for runoff pollution control. The first flush strength of pollutants can affect bioretention performance. To examine the influence of the first flush strength on bioretention performance, bioretention columns filled with garden soil as the main media were established. Activated carbon and water treatment residuals (WTR) were added and compared for their ability to enhance phosphorus removal. Waste edible fungus culture medium (WEFCM) as a carbon source was also explored. When WEFCM was used as a carbon source instead of wood chips, total nitrogen (TN) removal increased from 60.83 ± 21.22 to 62.21 ± 16.43%, but chemical oxygen demand (COD) leaching was observed. WTR was better able than activated carbon to enhance phosphorus removal (87.97 ± 8.87 vs. 81.66 ± 9.27%) without impacting TN removal. NH4+-N removal increased with increasing first flush strength, but there was no trend for suspended solids (SS), COD, TN, or total phosphorus. First leaching phenomenon in bioretention outflow was proposed in this study. A low first leaching was observed in the outflow when the inflow had a uniform pollutant mass (i.e., no first flush) because of media leaching. A weak first leaching outflow was observed for SS and COD when they were present at strong first flush inflow.
HIGHLIGHTS
Waste edible fungus culture medium can be used as a carbon source instead of wood chips.;
Water treatment residuals enhanced P removal better than activated carbon at the same volume ratio.;
NH4+-N removal increased with increasing first flush strength, but SS, COD, TN, and TP did not.;
A strong SS and COD first flush inflow led to considerable first leaching mitigation effect in the outflow.; |
| first_indexed | 2024-04-12T15:47:58Z |
| format | Article |
| id | doaj.art-c4472837f55f4bd0a01c182d11a08f6c |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-12T15:47:58Z |
| publishDate | 2022-09-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-c4472837f55f4bd0a01c182d11a08f6c2022-12-22T03:26:36ZengIWA PublishingWater Science and Technology0273-12231996-97322022-09-018661478149510.2166/wst.2022.275275Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performanceWei Zhang0Kexin Tao1Huichao Sun2Wu Che3 Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China Bioretention is commonly used for runoff pollution control. The first flush strength of pollutants can affect bioretention performance. To examine the influence of the first flush strength on bioretention performance, bioretention columns filled with garden soil as the main media were established. Activated carbon and water treatment residuals (WTR) were added and compared for their ability to enhance phosphorus removal. Waste edible fungus culture medium (WEFCM) as a carbon source was also explored. When WEFCM was used as a carbon source instead of wood chips, total nitrogen (TN) removal increased from 60.83 ± 21.22 to 62.21 ± 16.43%, but chemical oxygen demand (COD) leaching was observed. WTR was better able than activated carbon to enhance phosphorus removal (87.97 ± 8.87 vs. 81.66 ± 9.27%) without impacting TN removal. NH4+-N removal increased with increasing first flush strength, but there was no trend for suspended solids (SS), COD, TN, or total phosphorus. First leaching phenomenon in bioretention outflow was proposed in this study. A low first leaching was observed in the outflow when the inflow had a uniform pollutant mass (i.e., no first flush) because of media leaching. A weak first leaching outflow was observed for SS and COD when they were present at strong first flush inflow. HIGHLIGHTS Waste edible fungus culture medium can be used as a carbon source instead of wood chips.; Water treatment residuals enhanced P removal better than activated carbon at the same volume ratio.; NH4+-N removal increased with increasing first flush strength, but SS, COD, TN, and TP did not.; A strong SS and COD first flush inflow led to considerable first leaching mitigation effect in the outflow.;http://wst.iwaponline.com/content/86/6/1478bioretentioncarbon sourcefirst flushwaste edible fungus culture mediumwater treatment residuals |
| spellingShingle | Wei Zhang Kexin Tao Huichao Sun Wu Che Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance Water Science and Technology bioretention carbon source first flush waste edible fungus culture medium water treatment residuals |
| title | Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| title_full | Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| title_fullStr | Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| title_full_unstemmed | Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| title_short | Influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| title_sort | influence of urban runoff pollutant first flush strength on bioretention pollutant removal performance |
| topic | bioretention carbon source first flush waste edible fungus culture medium water treatment residuals |
| url | http://wst.iwaponline.com/content/86/6/1478 |
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