Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff
Bioretention has great potential in managing and purifying urban stormwater runoff. However, information regarding the removal of nutrients in bioretention systems with the use of media, plants, and saturated areas is still limited. In this study, three devices of control, conventional bioretention...
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MDPI AG
2020-04-01
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| Online Access: | https://www.mdpi.com/2076-3417/10/9/3148 |
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| author | Hui Luo Lin Guan Zhaoqian Jing BaoJie He Xinyue Cao Zeyu Zhang Mengni Tao |
| author_facet | Hui Luo Lin Guan Zhaoqian Jing BaoJie He Xinyue Cao Zeyu Zhang Mengni Tao |
| author_sort | Hui Luo |
| collection | DOAJ |
| description | Bioretention has great potential in managing and purifying urban stormwater runoff. However, information regarding the removal of nutrients in bioretention systems with the use of media, plants, and saturated areas is still limited. In this study, three devices of control, conventional bioretention (DS), and strengthened bioretention (SZ) were investigated to enhance the simultaneous removal of nitrogen and phosphorus. The experimental column SZ showed the best performance for total phosphorus (TP), ammonia (NH<sub>4</sub><sup>+</sup>-N) and total nitrogen (TN) removal (85.6–92.4%, 83.1–92.7%, 57.1–74.1%, respectively), whereas DS columns performed poorly for NH<sub>4</sub><sup>+</sup>-N removal (43.6–81.2%) under different conditions. For the removal of nitrate, the columns of Control and DS exhibited negative performance (−14.3% and −8.2%) in a typical event. Further evaluation of water quality revealed that in the early stages of rainfall, the effluent of the SZ column was able to reach quality standards of Grade IV for surface water in China. Moreover, although the ion-exchange and phosphate precipitation occurred on the surface of the media, which were placed in the saturation zone, it did not change the surface crystal structure. |
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| language | English |
| last_indexed | 2024-03-10T20:07:29Z |
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| spelling | doaj.art-7097c242a1364d00bbb1308913467d2a2023-11-19T23:10:35ZengMDPI AGApplied Sciences2076-34172020-04-01109314810.3390/app10093148Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater RunoffHui Luo0Lin Guan1Zhaoqian Jing2BaoJie He3Xinyue Cao4Zeyu Zhang5Mengni Tao6College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, ChinaNanjing Municipal Design and Research Institute, Nanjing 210008, Jiangsu, ChinaCollege of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, ChinaFaculty of Built Environment, University of New South Wales, Sydney, NSW 2052, AustraliaCollege of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, ChinaCollege of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, ChinaCollege of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, ChinaBioretention has great potential in managing and purifying urban stormwater runoff. However, information regarding the removal of nutrients in bioretention systems with the use of media, plants, and saturated areas is still limited. In this study, three devices of control, conventional bioretention (DS), and strengthened bioretention (SZ) were investigated to enhance the simultaneous removal of nitrogen and phosphorus. The experimental column SZ showed the best performance for total phosphorus (TP), ammonia (NH<sub>4</sub><sup>+</sup>-N) and total nitrogen (TN) removal (85.6–92.4%, 83.1–92.7%, 57.1–74.1%, respectively), whereas DS columns performed poorly for NH<sub>4</sub><sup>+</sup>-N removal (43.6–81.2%) under different conditions. For the removal of nitrate, the columns of Control and DS exhibited negative performance (−14.3% and −8.2%) in a typical event. Further evaluation of water quality revealed that in the early stages of rainfall, the effluent of the SZ column was able to reach quality standards of Grade IV for surface water in China. Moreover, although the ion-exchange and phosphate precipitation occurred on the surface of the media, which were placed in the saturation zone, it did not change the surface crystal structure.https://www.mdpi.com/2076-3417/10/9/3148bioretentionurban stormwater runoffnutrient removalwater quality standardssaturated areas |
| spellingShingle | Hui Luo Lin Guan Zhaoqian Jing BaoJie He Xinyue Cao Zeyu Zhang Mengni Tao Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff Applied Sciences bioretention urban stormwater runoff nutrient removal water quality standards saturated areas |
| title | Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff |
| title_full | Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff |
| title_fullStr | Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff |
| title_full_unstemmed | Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff |
| title_short | Performance Evaluation of Enhanced Bioretention Systems in Removing Dissolved Nutrients in Stormwater Runoff |
| title_sort | performance evaluation of enhanced bioretention systems in removing dissolved nutrients in stormwater runoff |
| topic | bioretention urban stormwater runoff nutrient removal water quality standards saturated areas |
| url | https://www.mdpi.com/2076-3417/10/9/3148 |
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