The prediction research of underground road pollutant distribution

2015 ◽  
pp. 1407-1410
Author(s):  
Zhiyong Li ◽  
Qianqian Shi ◽  
Hao Zhang ◽  
Chao Chen
Keyword(s):  
Pollutant Distribution

scholarly journals Marine Gel Interactions with Hydrophilic and Hydrophobic Pollutants

Gels ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 83
Author(s):  
Peter H. Santschi ◽  
Wei-Chun Chin ◽  
Antonietta Quigg ◽  
Chen Xu ◽  
Manoj Kamalanathan ◽  
...  
Keyword(s):  
Metal Ions ◽  
Food Web ◽  
Microbial Ecology ◽  
Particle Interactions ◽  
Marine Microbes ◽  
Element Cycling ◽  
Exopolymeric Substances ◽  
Hydrophobic Pollutants ◽  
Pollutant Distribution ◽  
Ultimate Fate

Microgels play critical roles in a variety of processes in the ocean, including element cycling, particle interactions, microbial ecology, food web dynamics, air–sea exchange, and pollutant distribution and transport. Exopolymeric substances (EPS) from various marine microbes are one of the major sources for marine microgels. Due to their amphiphilic nature, many types of pollutants, especially hydrophobic ones, have been found to preferentially associate with marine microgels. The interactions between pollutants and microgels can significantly impact the transport, sedimentation, distribution, and the ultimate fate of these pollutants in the ocean. This review on marine gels focuses on the discussion of the interactions between gel-forming EPS and pollutants, such as oil and other hydrophobic pollutants, nanoparticles, and metal ions.

scholarly journals A GIS-BASED STUDY ON POLLUTANT DISTRIBUTION IN A CATCHMENT BASIN

2006 ◽  
Vol 34 ◽  
pp. 227-233
Author(s):  
Atsushi ICHIKI ◽  
Tomohiro YANADA ◽  
Akito SASAKI ◽  
Koji AMANO ◽  
Kiyoshi YAMADA
Keyword(s):  
Catchment Basin ◽  
Pollutant Distribution

scholarly journals Study on the influence of pollution source location on indoor pollutant distribution under different air supply

2017 ◽  
Vol 205 ◽  
pp. 2623-2630 ◽  
Author(s):  
Shui Yu ◽  
Zhitian Yu ◽  
Xiunan Ma ◽  
Guojuan Zhang ◽  
Guohui Feng
Keyword(s):  
Source Location ◽  
Pollution Source ◽  
Air Supply ◽  
Indoor Pollutant ◽  
Pollutant Distribution

scholarly journals A Study on Seasonal Pollutant Distribution Characteristics of Contaminated Tributaries in Nakdong River Basin

2016 ◽  
Vol 18 (3) ◽  
pp. 301-312 ◽  
Author(s):  
Seungmin Na ◽  
Heongak Kwon ◽  
Sang Min Shin ◽  
YoungGyu Son ◽  
Dongseok Shin ◽  
...  
Keyword(s):  
River Basin ◽  
Distribution Characteristics ◽  
Nakdong River ◽  
Nakdong River Basin ◽  
Pollutant Distribution

scholarly journals Estimation of the spatial distribution of maximum PM10 and PM2.5 concentration in Bandung City and surrounding countries using WRF-Chem Model (case study in July and October 2018)

2021 ◽  
Vol 893 (1) ◽  
pp. 012044
Author(s):  
H Salsabila ◽  
A Turyanti ◽  
DE Nuryanto
Keyword(s):  
Pollutant Dispersion ◽  
Meteorological Factor ◽  
Air Pollutant ◽  
Pollutant Concentration ◽  
Pollutant Emission ◽  
Dispersion Pattern ◽  
Model Case ◽  
The Public ◽  
Pollutant Distribution

Abstract Bandung is one of big cities in Indonesia with high activities on industrial and transportation that will increase the air pollutant emission and causes adversely affect the public health. Based on that matter, monitoring of air pollutant concentration is urgently needed to predict the direction of pollutant dispersion and to analyze which locations are vulnerable to maximum exposure of the pollutant. Field monitoring of air pollutant concentration needs much time and high cost, but modeling could help for this. One of the models that can be used to predict the direction of pollutant distribution is the Weather Research Forecasting/Chemistry (WRF-Chem) model, which is a model that combines meteorological models with air quality models. The output of the WRF-Chem running model on July and October 2018, which has been analyzed visually, showed the dispersion pattern of PM10 and PM2.5 is spread mostly to the west, northwest, and north following the wind direction. According to the output of the WRF-Chem model, Bandung Kulon is the most polluted subdistrict by PM10 and PM2.5 with an exposure frequency of 22 hours (PM10), 24 hours (PM2.5) on July 2018 and 19 Hours (PM10), 14 hours (PM2.5) on October 2018. The correlation value for meteorological parameters is quite high in July 2018 (R = 0.9 for wind speed and R = 0.82 for air temperature). So based on the meteorological factor, WRF-Chem model can be used to predict the direction of pollutant distribution.

River Flow Structure and Its Effect on Pollutant Distribution

2019 ◽  
Vol 46 (6) ◽  
pp. 910-918
Author(s):  
Yu. D. Chashechkin ◽  
O. M. Rozental
Keyword(s):  
Flow Structure ◽  
River Flow ◽  
Pollutant Distribution

scholarly journals Airflow Characteristics Downwind a Naturally Ventilated Pig Building with a Roofed Outdoor Exercise Yard and Implications on Pollutant Distribution

2020 ◽  
Vol 10 (14) ◽  
pp. 4931
Author(s):  
Qianying Yi ◽  
David Janke ◽  
Lars Thormann ◽  
Guoqiang Zhang ◽  
Barbara Amon ◽  
...  
Keyword(s):  
Air Pollutants ◽  
Pollutant Dispersion ◽  
Air Pollutant ◽  
Emission Mitigation ◽  
Surrounding Environment ◽  
Air Pollutant Dispersion ◽  
Treatment Technologies ◽  
Downwind Side ◽  
Pollutant Distribution ◽  
Wake Zone

The application of naturally ventilated pig buildings (NVPBs) with outdoor exercise yards is on the rise mainly due to animal welfare considerations, while the issue of emissions from the buildings to the surrounding environment is important. Since air pollutants are mainly transported by airflow, the knowledge on the airflow characteristics downwind the building is required. The objective of this research was to investigate airflow properties downwind of a NVPB with a roofed outdoor exercise yard for roof slopes of 5°, 15°, and 25°. Air velocities downwind a 1:50 scaled NVPB model were measured using a Laser Doppler Anemometer in a large boundary layer wind tunnel. A region with reduced mean air velocities was found along the downwind side of the building with a distance up to 0.5 m (i.e., 3.8 times building height), in which the emission concentration might be high. Additional air pollutant treatment technologies applied in this region might contribute to emission mitigation effectively. Furthermore, a wake zone with air recirculation was observed in this area. A smaller roof slope (i.e., 5° slope) resulted in a higher and shorter wake zone and thus a shorter air pollutant dispersion distance.

Numerical and experimental investigations of the pollutant distribution in sewers

2002 ◽  
Vol 45 (7) ◽  
pp. 83-93 ◽  
Author(s):  
P. Jaumouillié ◽  
F. Larrarte ◽  
V. Milisic
Keyword(s):  
Experimental Program ◽  
Experimental Investigations ◽  
Hydrodynamic Conditions ◽  
Precise Knowledge ◽  
Laboratoire Central ◽  
Suspended Matter Concentration ◽  
Pollutant Distribution ◽  
Measurement Location ◽  
Matter Concentration ◽  
Sewer Networks

Controlling flow and pollutant discharges through sewer networks is required for a number of reasons. In order to accomplish such control, precise knowledge of the hydrodynamic conditions of each candidate measurement location proves critical. The Laboratoire Central dos Ponts et Chaussés has thus become involved in an experimental program on velocity and suspended matter concentration fields. This paper first presents the measurement methods and experimental results obtained before providing and discussing some of the numerical results.

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