Design parameters and treatment efficiency of a retrofit bioretention system on runoff nitrogen removal

Jiang, Chunbo; Li, Jiake; Zhang, Bin-Hong; Ruan, Tianshun; Li, Huaien; Wen, Dong

doi:10.1007/s11356-018-3267-5

Cited by 22 publications

(3 citation statements)

References 21 publications

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“…On the one hand, the denitrification effect of traditional bioretention facilities is limited (Li et al 2021c ), and N removal efficiency fluctuates greatly (Dempster et al 2012 ). Even though there is mutual conversion between different forms of N, organic nitrogen and ammonia are converted into nitrate by microorganisms in bioretention facilities (Jiang et al 2018 ), and the form of NO 3 - -N is the most stable. Therefore, NO 3 - -N accounts for a large proportion of all existing forms of N, and this form is of great reference significance to the actual situation of studying the model simulation results.…”

Section: Methodsmentioning

confidence: 99%

“…As a low impact development (LID) facility, bioretention facilities can effectively reduce the peak flow of stormwater runoff and control the pollution in stormwater runoff. At present, a vast number of experimental studies have been undertaken by researchers on the effects of sewage interception and peak clipping (Yang and Chui 2018 ), the composition of the growing media layer (Rahman et al 2020 ), the thickness of the filler (Vijayaraghavan et al 2021 ), and the modification of the growing media (Jiang et al 2018 ) in bioretention facilities. The bioretention technology applied to LID is gradually maturing.…”

Section: Introductionmentioning

confidence: 99%

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The migration and accumulation of typical pollutants in the growing media layer of bioretention facilities

Gong

Xie

et al. 2023

Environ Sci Pollut Res

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A series of complex physical and chemical processes, such as interception, migration, accumulation, and transformation, can occur when pollutants in stormwater runoff enter the growing media layer of bioretention facilities, affecting the purification of stormwater runoff by bioretention facilities. The migration and accumulation of pollutants in the growing media layer need long-term monitoring in traditional experimental studies. In this study, we established the Hydrus-1D model of water and solution transport for the bioretention facilities. By analyzing the variation of cumulative fluxes of NO 3 - -N and Pb with time and depth, we investigated pollutant migration and accumulation trends in the growing media layer of bioretention facilities. It can provide support for reducing runoff pollutants in bioretention facilities. The Hydrus-1D model was calibrated and verified with experimental data, and the input data (runoff pollutant concentration) for the pollutant concentration boundary was obtained from the SWMM model. The results demonstrated that the cumulative fluxes of NO 3 - -N and Pb increased with the passage of simulation time and depth of the growing media layer overall. From the top to the bottom of the growing media layer, the change rates of the peak cumulative fluxes of NO 3 - -N and Pb were strongly linked with their levels in the runoff. An increase in rainfall decreased the content of NO 3 - -N and Pb in the growing media layer, and this phenomenon was more obvious in the lower part of the layer. Graphical Abstract

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The migration and accumulation of typical pollutants in the growing media layer of bioretention facilities

Gong

Xie

et al. 2023

Environ Sci Pollut Res

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“…Earlier research studies mainly focus on the hydrological effects under different climates and seasons [14,15]; water quality improvement for suspended solids (SS), chemical oxygen demand (COD cr ), total phosphorus (TP), ammonium nitrogen (NH 4 + -N), and especially total nitrogen (TN) [16][17][18]; and bioretention model, to evaluate and predict the performance of real or designed bioretention systems [19,20]. Similarly, Ayers [21] emphasized the importance of bioretention soil and ecosystems, and noted that their impact on bioretention performance may be significant.…”

Section: Introductionmentioning

confidence: 99%

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Yang

Liu

et al. 2020

Water

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The current study was aimed to investigate the filler layer structure in modified bioretention systems. Three different structural layers in bioretention were proposed to evaluate their hydrologic performance and pollutant removal efficiency under different rainfall intensities. These layers were as follows: all three layers (filter, transition, and drainage layers), without transition layer, and without drainage layer. Synthetic stormwater was used for experimental purpose in current work. Results revealed that compared with “all three layers”, runoff control rate of “without transition layer” and “without drainage layer” was reduced by 0 to 7.4%, 0 to 10.1%, and outflow start time was advanced by 6 to 8 min and 1.5 to 4.5 min, respectively. Moreover, CODcr (chemical oxygen demand), NH4+-N (ammonium nitrogen), TN (total nitrogen) and TP (total phosphorus) removal rates were 86.0%, 85.4%, 71.8%, and 68.0%, respectively. Particle size distribution of the fillers revealed that during operation, particle moved downward were mainly within 0.16–0.63 mm size. Findings showed that transition and drainage layer played an important role in runoff control, and total height of the filler layer should not be less than 800 mm. Filter layer effectively reduce runoff pollution but the thickness of the filter layer should not be less than 500 mm. Whereas, transition layer has the function of preventing the filler loss of the filter layer; therefore, proper measures must be taken into consideration during structural optimization.

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Hybrid ion exchange and biological processes for water and wastewater treatment: a comprehensive review of process applications and mathematical modeling

Zhang,

Payne,

Zhang

et al. 2023

Rev Environ Sci Biotechnol

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Design parameters and treatment efficiency of a retrofit bioretention system on runoff nitrogen removal

Cited by 22 publications

References 21 publications

The migration and accumulation of typical pollutants in the growing media layer of bioretention facilities

The migration and accumulation of typical pollutants in the growing media layer of bioretention facilities

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Hybrid ion exchange and biological processes for water and wastewater treatment: a comprehensive review of process applications and mathematical modeling

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