Characterization of stormwater runoff in the powai region of Mumbai

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(5)

Published: April 22, 2025

Language: Английский

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Spatiotemporal occurrence of phthalate esters in stormwater drains of Hong Kong, China: Mass loading and source identification

Environmental Pollution, Journal Year: 2022, Volume and Issue: 308, P. 119683 - 119683

Published: June 27, 2022

Language: Английский

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Performance of a gross pollutant trap-biofilter and sand filter treatment train for the removal of organic micropollutants from highway stormwater (field study)

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 900, P. 165734 - 165734

Published: July 25, 2023

This field study assessed the occurrence, event mean concentrations (EMCs), and removal of selected organic micro-pollutants (OMPs), namely, polycyclic aromatic hydrocarbons (PAHs), petroleum (PHCs), nonylphenol (NP), 4-t-octylphenol (OP), bisphenol A (BPA), in a gross pollutant trap (GPT)-biofilter/sand filter stormwater treatment train Sundsvall, Sweden. The effects design features each unit, including pre-sedimentation (GPT), sand medium, vegetation, chalk amendment, were investigated by comparing units' performances. Overall, removed most OMPs from highway runoff effectively. results showed that although provided moderate (<50 % for phenolic substances) to high (50-80 PAHs PHCs) OMPs, adding vegetated soil layer on top considerably improved performance (by at least 30 %), especially BPA, OP, suspended solids. Moreover, GTP did not contribute significantly. Uncertainties efficiencies PHCs cells increased substantially when ratio influent concentration limit quantification decreased. Thus, accounting such uncertainties due low OMP should be considered evaluating biofilters.

Language: Английский

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Treatment of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in stormwater using polishing columns with biochar and granular activated carbon

Chemosphere, Journal Year: 2025, Volume and Issue: 372, P. 144107 - 144107

Published: Jan. 24, 2025

Polycyclic Aromatic Hydrocarbons (PAHs) and Polychlorinated Biphenyls (PCBs) are recalcitrant organic pollutants often detected in stormwater. Various stormwater control measures (SCMs) can remove PAHs PCBs by filtration, adsorption, biodegradation. However, dissolved remain present the treated outflow of SCMs. To provide further treatment, two types biochar (biochar A B), a granular activated carbon (GAC), regenerated GAC (RAC) were tested column study with synthetic containing low concentrations. Results showed that PAH concentrations reduced 98.2-99.8% (range: 62% accumulated at first third due to adsorption onto black material thus providing information for management. difference treatment performances different may be caused molecular structure contaminants. Lifetime calculations indicated had lifetimes >36-51 years, RAC longer than 147 206 respectively, based on predicted precipitation scaled up designs. results carbons efficient adsorbents polishing treatment. With consideration efficiency, sustainability cost, is recommended PCBs.

Language: Английский

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Metal Treatment in Stormwater Bioretention Systems with High Hydraulic Conductivity – Designed for More Efficient Runoff Volume Capture and Cold Climates

Published: Jan. 1, 2025

Language: Английский

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