This study analyses the mobilization of total suspended solids (TSS) for different spatial distributions of sediment load located over the roadway surface of a full-scale street section physical model. At the sewer network outlet, flow discharges were measured and TSS pollutographs were determined with manual grab samples and inferred from turbidity records. In all the tests, the rain duration was 5 min and its averaged intensity was 101 mm/h. In addition, solids that were not washed off at the end of the experiments were collected from the street surface, gully pots and pipes and the mass balance error was checked. The experiments were configured to assess the influence of the initial load, spatial distribution method, distance from gully pot and distribution area dimensions on the TSS washoff. The study showed that sediment initial load and distribution cannot explain completely pollutant washoff processes because other variables such as the spatial rainfall distribution or the runoff depth also affect to the outlet pollutographs and system mass balances.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2166/wst.2017.345 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Understanding sediment wash-off in road drainage systems under intense rainfall and high sediment masses: Insights from a large-scale modeling facility.
Sci Total Environ
December 2024
Universidade da Coruña, Water and Environmental Engineering Research Team (GEAMA), Centre for Technological Innovation in Construction and Civil Engineering (CITEEC), Campus de Elviña, 15071, A Coruña, Spain. Electronic address:
The main objective of this paper is to analyze, through a unique large-scale modeling facility, the RDS wash-off under various scenarios of intense rainfall and high RDS masses. A 1:1 scale physical modeling facility was used to allow precise measurement of the RDS wash-off phenomenon under two different rainfall intensities (30/50 mm/h) and three initial RDS masses (100/150/200 g/m). The accumulated and discharged masses of RDS in the different components of the modeling facility (roadway/RW, gully pot/GP and manhole/MH) were collected at the end of the wash-off simulations.
View Article and Find Full Text PDFModeling urban pollutant wash-off processes with ecological memory.
J Environ Manage
December 2024
Earth System Science Interdisciplinary Center, University of Maryland, College Park, 5825 University Research Ct, College Park, MD, 20740, USA.
Urbanization increases the extent of impervious surfaces, runoff, sediment, and nutrient loadings downstream, leading to the deterioration of urban surface waters. During pollutant wash-off from urban surfaces, the peak concentration of pollutants typically occurs after the rainfall peak. However, current urban wash-off models do not consider this time delay, assuming that the effect of rainfall on the wash-off process is immediate.
View Article and Find Full Text PDFEnvironmental drivers of sediment accumulation in urban sewer systems: A case study of Kyoto City, Japan.
Water Res
January 2025
Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan.
Article Synopsis
- Sediment buildup in sewer systems can decrease their drainage capacity, leading to urban flooding and safety hazards, driven by various environmental factors that are not fully understood.
- This study investigated the interaction of five environmental factors—population, traffic, climate, air quality, and wastewater quality—on sediment accumulation in different sewer structures in Kyoto, Japan, from 2014 to 2023.
- Findings revealed that population and traffic increased sediment due to pollutant emissions, while climate and air quality significantly influenced deposition, highlighting the importance of these factors for understanding sewer sedimentation in the context of climate change.
A comparative study of foliar particulate matter wash-off from plants under natural and simulated rain conditions.
Sci Rep
November 2024
Section of Basic Research in Horticulture, Department of Plant Protection, Institute of Horticultural Sciences, Warsaw University of Life Sciences-SGGW (WULS-SGGW), Nowoursynowska 159, Warsaw, 02- 776, Poland.
Article Synopsis
- Urban greening can help lower particulate matter (PM) levels, but most of the PM just sits on plant leaves temporarily and can be washed away by rain.
- This study aimed to compare how natural rain versus simulated rain affects PM removal from various plant types.
- The findings show that simulated rain is generally better at removing PM than natural rain, but the effectiveness varies by plant type, with natural rain being more effective for evergreen trees while simulated rain works better for deciduous shrubs and herbaceous plants.
Rainfall-induced microplastic fate and transport in unsaturated Dutch soils.
J Contam Hydrol
January 2025
Department of Soil Physics and Land Management, Wageningen University and Research, Wageningen, the Netherlands. Electronic address:
Microplastic pollution has become a growing concern in terrestrial ecosystems, with significant implications for environmental and human health. Understanding the fate and transport of microplastics in soil environment is crucial for effective mitigation strategies. This study investigates the dynamics of microplastic (Low-density polyethylene (LDPE), polybutylene adipate terephthalate (PBAT), and starch-based biodegradable plastic) transport in unsaturated soils under varying rainfall intensities and soil types, aiming to elucidate the factors influencing their behavior.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!