Monitoring (micro-)pollutants in wastewater treatment plants: Comparing discharges in wet- and dry-weather DOI Creative Commons
Jessica Ianes, Beatrice Cantoni, Fabio Polesel

et al.

Environmental Research, Journal Year: 2024, Volume and Issue: 263, P. 120132 - 120132

Published: Oct. 9, 2024

Municipal wastewater treatment plants (WWTPs) are crucial for maintaining good quality of surface water, limiting environmental pollution. However, during wet-weather events, WWTPs become an important point-source discharge due to the activation bypass, which releases a mix untreated and stormwater. This work aims assess how WWTP discharges (effluent bypass) impact on receiving water body dry- wet-weather, monitoring 78 pollutants (7 conventional pollutants, 19 heavy metals, 52 micropollutants) in each stream dry-weather, effluent bypass wet-weather), including influent dry-weather comparison. The occurrence, concentration levels variability, risk were addressed, with specific focus high-resolution (up 20-min) sampling based expected relevant temporal dynamicity. A wider range occurred included undetected compounds influent. Besides, greater inter-events variability concentrations was observed, but smaller intra-event only some exhibiting distinct first-flush effect. To address challenge cost-effective monitoring, we explored applicability readily measurable parameters (total suspended solids electrical conductivity) as proxies micropollutants. Correlations between these pollutant groups suggest promising path further investigation broader application. magnitude rain event also affected levels, volume clearly affecting dilution. assessment revealed significantly higher associated compared effluent, especially terbutryn, highlighting urgency improved management strategies. Overall, this study highlights contribution from WWTPs, emphasizing importance high-frequency capture peak accurately risk.

Language: Английский

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

Ali Beryani,

Kelsey Flanagan, Maria Viklander

et al.

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

Citations

10
Quality of meltwater in terms of potential use in swimming pool facilities DOI Creative Commons
Edyta Kudlek, Anna Lempart,

Rafał Rapacewicz

et al.

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101052 - 101052

Published: Feb. 1, 2025

Language: Английский

Citations

0
Realistic exposure scenarios in combined sewer overflows: how temporal resolution and selection of micropollutants impact risk assessment DOI Creative Commons
Viviane Furrer, Marion Junghans, Heinz Singer

et al.

Water Research, Journal Year: 2025, Volume and Issue: 278, P. 123318 - 123318

Published: Feb. 19, 2025

Organic micropollutants in combined sewer overflows (CSOs) pose a potential risk to aquatic ecosystems. Previous studies mainly reported event mean concentrations (EMCs) and often focused on small number of substances. This study presents realistic exposure scenarios using high-temporal resolution (10-minute) data from 24 events at two CSO sites. We analyzed 49 dissolved organic for all 198 four events, including pharmaceuticals, pesticides, road-related compounds, which we detected 83 substances least once. From these, assessed the mixed chemical by applying acute quality criteria evaluated how assessment outcome changes aspects: temporal selection Our results reveal that total quotients (RQtot) can vary greatly within with 10-minute capturing peak are missed EMCs. Using EMCs underestimates maximum RQtot an median factor 4.9, up 6.9. When comparing 20 Swiss Waters Protection Ordinance broader list commonly CSOs comprehensive substances, estimated increases between 1.1 2.3-fold. values exceed threshold 1 75 % requiring further dilution receiving water body. All three pollutant classes (pharma, pesticide, road) drive risk, no specific phase during overflow consistently poses higher than other phases, challenges design effective mitigation measures. Furthermore, presented here offer essential input future ecotoxicological research as they high short-term fluctuations whose ecological significance is still largely unknown.

Language: Английский

Citations

0
Urban River Bathing in Europe: Evolution, Typology, Management Issues, and Sustainability Challenges DOI
Yixin Cao, Oldřich Navrátil, Anne Rivière‐Honegger

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Comprehensive approaches to managing emerging contaminants in wastewater: identification, sources, monitoring and remediation DOI

Deepjyoti Boro,

Manisha Chirania,

Ashwni Verma

et al.

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(4)

Published: March 21, 2025

Language: Английский

Citations

0
Critical field evaluations of biochar-amended stormwater biofilters for PFAS and other organic micropollutant removals DOI Creative Commons
Ali Beryani, Kelsey Flanagan, Shujie You

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123547 - 123547

Published: March 1, 2025

Biochar is often promoted as an ideal amendment for stormwater biofilters; however, its effectiveness has rarely been tested under field conditions. This study evaluates the impact of biochar addition on removal organic micropollutants (OMPs) in field-scale biofilters operating real-world conditions first time. The research comprised four vegetated biofilter facilities (3 - 5 years old), two without and with 2.1 wt. % (10 vol. %) amendment. Stormwater filter material samples from various locations after operation were analyzed a wide range common emerging OMPs found urban runoff. Unlike hydrophobic (hydrocarbons, polychlorinated biphenyls, di(2-ethylhexyl) phthalate), investigated demonstrated low, or inconsistent, hydrophilic slow-adsorbing like bisphenol A, monobutyltin, per-fluoroalkyl substances (PFASs). Although physiochemical properties well-adapted to pollutant removal, did not significantly improve OMP when compared status quo. can be attributed several suboptimal design interfering biochar's sorption capacity, namely, large particle size (D50 ∼4 mm) low quantity biochar, high levels competing agents (i.e., dissolved oxygen carbon (DOC) cations), co-contaminants stormwater, limited contact time, pore blockage (e.g., by DOC molecules sediments/minerals), diminished surface porosity, sometimes increased uncertainty due influent concentrations. Our findings complexities associated applying treatment. Further biochar-specific designs needed optimize potential this

Language: Английский

Citations

0
Rethinking modelling of particulate pollutants in combined sewer overflows (CSOs): A focus on model structure DOI Creative Commons
Vasileios Chrysochoidis, Günter Gruber,

Thomas Höfer

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133239 - 133239

Published: April 1, 2025

Language: Английский

Citations

0
Comparing acute toxicity testing and extensive targeted chemical screening for risk assessment of urban stormwater pond sediments DOI Creative Commons
Kelsey Flanagan, Godecke‐Tobias Blecken, Heléne Österlund

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 494, P. 138451 - 138451

Published: May 2, 2025

Language: Английский

Citations

0
Occurrence, concentration and distribution of 50 organic contaminants in water and bottom sediment from urban streams affected by stormwater discharges DOI Creative Commons
Suna Ekin Kali, Heléne Österlund, Maria Viklander

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123847 - 123847

Published: May 1, 2025

Language: Английский

Citations

0
A study of 101 organic substances in gully pot sediments accumulated over a one-year period in Stockholm, Sweden DOI Creative Commons
Haoyu Wei, Kelsey Flanagan, Lian Lundy

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 894, P. 165028 - 165028

Published: June 21, 2023

Stormwater runoff is a key pathway for diffuse pollutants to enter receiving waters. Mitigating measures include pollutant substitution, restricting their release into the urban technosphere and limiting (re-)mobilisation of substances minimise negative impacts on Gully pots (GPs) are one most ubiquitous drainage infrastructure components, providing both function onward transport through in-pot sedimentation processes. In this study, sediments accumulated over one-year period were collected from 26 GPs in catchments four land-use types Stockholm, Sweden. Sediments analysed 101 organic eight substance groups (hydrocarbons, polycyclic aromatic hydrocarbons, alkylphenols, polychlorinated biphenyls, phthalates, organotins, per- polyfluoroalkyl brominated fire retardants) inform an assessment occurrence net accumulation rates typical unit operation period. A total 63 quantified at least GP, with aliphatic phthalates organotins all GP sediments, highlighting use. The identification 14 21 two pedestrian/bike path emphasise contribution non-vehicular sources loads. Significantly higher mass 4-tert-octylphenol, 4-nonylphenols, formaldehyde, dioctyltin dibutyltin identified commercial catchment suggesting need enhance source-tracing quality-control within type. 25 exceeding toxicology-based threshold values, reducing potential ecotoxic recipients.

Language: Английский

Citations

9