Characterization and microbial mechanism of pollutant removal from stormwater runoff in the composite filler bioretention system

Water Reuse, Journal Year: 2024, Volume and Issue: 14(1), P. 95 - 114

Published: Feb. 29, 2024

Abstract Bioretention systems are a low-impact development (LID) measure to effectively control stormwater runoff and reduce pollutant concentrations. In this paper, three groups of bioretention cells with different filling materials (1# soil media (BSM), 2# BSM + 5% biochar, 3# +5% biochar +biological filler) were constructed analyze the removal characteristics microbial action under simulated rainfall conditions. Results showed that overall capacity was higher than system 1#, having lowest effluent concentrations 2.71 mg/L for total nitrogen (TN) 64.3 chemical oxygen demand (COD). The load reduction effect heavy metals ranked as > 1# 3#, average rates 80.3, 75.1, 84.8% Cu, Pb, Zn in 2#. Microbial community analysis indicated Proteobacteria Firmicutes absolute dominant bacteria systems, genera included Bacillus, Hyphomicrobium, Micrococcaceae, Nitrospira. addition, number denitrifying functional increased by 1.39 52.1% compared 1#.

Language: Английский

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Optimizing Eco-Efficiency of green Infrastructure: A comparative study of woody plant species Utilizing SWMM-HYDRUS model and Analytic Hierarchy process

Ecological Indicators, Journal Year: 2025, Volume and Issue: 173, P. 113388 - 113388

Published: March 25, 2025

Language: Английский

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Merits, limits and preposition of coupling modelling tools for blue-green elements to enhance the design of future climate-resilient cities

Environmental Research Letters, Journal Year: 2025, Volume and Issue: 20(4), P. 043002 - 043002

Published: March 28, 2025

Abstract This paper presents a comprehensive survey of the process-based models currently available for blue-green infrastructure assessment cooling potential, stormwater and pollution control, carbon sequestration, water provision. The modelling tools elements (BGEs) documents that there is no model simultaneous evaluation optimisation multiple ecosystem services BGEs. To evaluate coupling options, this study conducted meta-analysis on interoperability by assessing scales, drivers, overlaps, gaps, interfaces these Model points out conceptual constructual constraints preventing easy coupling, thus, an integrated services. Constraints arise due to very different disciplinary approaches from scientific communities involved in development, differences simulation transformation transport processes at urban relevant BGEs, fundamental divergences spatial temporal scales time steps existing single In particular, lack vegetation tailored BGEs hinders current developments towards developing tool services, which would be able handle nonstationary climate conditions, including feedback assessments drought heatwave impacts functioning

Language: Английский

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Modeling Nitrogen Migration Characteristics in Cool-Season Turf Grass Soils via HYDRUS-2D

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 943 - 943

Published: March 24, 2025

In order to study the leaching of exogenous nitrogen during green space management and maintenance, parameters model were calibrated through field monitoring grow box simulation experiments, Model for Studying Nitrogen Transport in Green Space Ecosystems was established by using HYDRUS-2D software. Results showed that is highly reliable simulating transport microtopography, with R2 values greater than 0.9 RMSE below 5. Slope gradient positively correlated horizontal differences (ammonium nitrate nitrogen) negatively vertical (p < 0.05), while application both ammonium 0.05). The soil exhibited a significant negative correlation slope (−0.837 −0.851), positive correlation, coefficients 0.965 0.967 surface subsurface soils, respectively. increasing rate exacerbated these discrepancies, highest treatment (0.312 g) exhibiting most pronounced differential effects. Notably, variation reached 6.9-fold nitrogen, discrepancy demonstrated 7.0-fold magnitude relative levels.

Language: Английский

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Migration of naphthalene in a biochar-amended bioretention facility based on HYDRUS-1D analysis

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 369, P. 122383 - 122383

Published: Sept. 3, 2024

Language: Английский

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Removal effect of typical pollutants from stormwater runoff in ecological ditches

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(40), P. 92317 - 92331

Published: July 24, 2023

Language: Английский

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Activated Sludge Combined with Pervious Concrete Micro-Ecosystem for Runoff Rainwater Collection and Pollutant Purification

Toxics, Journal Year: 2024, Volume and Issue: 12(12), P. 838 - 838

Published: Nov. 22, 2024

This study investigated the purification of pollutants in runoff rainwater by constructing a micro-ecosystem using waste-activated sludge (WAS) and riverbed (RBS) as inoculums combination with pervious concrete. The research results showed that best hydraulic retention time (HRT) was 9 h. COD ammonia nitrogen (NH4+-N) removal ecosystem (WASE) 62.67% 71.21%, respectively, while (RBSE) NH4+-N percentages 46.05% 66.55%, respectively. analysis genetic metabolism microbial genes system microbially enhanced extensive diverse populations. At phylum level, microorganisms responsible for degrading organic matter were mainly Firmicutes Actinobacteriota. genus Trichococcus dominant WASE, Dietzia, norank_f__Sporomusaceae norank_f__norank_o__norank_c__BRH-c20a genera central bacterial populations RBSE. proliferation phylum-level bacteria WASE relatively large, genus-level demonstrated better efficiency pollutants. overall effect than application analyses is capable effectively accepting treating all rainfall below rainstorm levels at near-full under optimal conditions. innovatively used wastewater plant combined concrete to construct remove achieved pollutant comparable modified adsorbent materials. An effective method collection treatment urban provided.

Language: Английский

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