Effectiveness and Impacts of Dust Control Measures for Owens Lake

2020 ◽  
Author(s):  
◽  
◽  
◽  
◽  
◽  
...  
Keyword(s):  
Dust Control ◽  
Control Measures ◽  
Owens Lake

Impact of dust on health of on-site construction workers – a case study

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Gauri Mohan ◽  
Annie Sonia Xavier
Keyword(s):  
Air Pollution ◽  
Questionnaire Survey ◽  
Residential Building ◽  
Dust Control ◽  
Control Measures ◽  
Construction Equipment ◽  
Dust Pollution ◽  
Building Site ◽  
Many Sources

The rate of air pollution is becoming a cause for worldwide concern because of its substantial increase. Different sources like combustion of fuels, release of smoke from industries etc are responsible for the pollution of air. The construction industry is a major contributor to air pollution in the form of dust. Most of the activities involved in the completion of a construction project contribute to the generation of dust in one way or another. There are many sources of dust in a construction site like the use of construction equipment, transportation activities etc. the dust thus generated can ill effects as well. But, the problem of dust pollution is not addressed properly mainly because of the lack of awareness in this area. Proper identification of sources of dust in sites, its health impacts etc can help generate awareness and also help in implementing control measures. This can help reduce dust pollution on site. Here, a residential building site is taken for the case study. A questionnaire survey is conducted for the workers to identify the negative impacts construction dust has and also to determine the most common dust control measures employed in site. Keywords—air pollution, construction activities, construction equipment, questionnaire survey, dust control

scholarly journals Analysis of the impact of road construction dust on glacier environment

2020 ◽  
Vol 145 ◽  
pp. 02048
Author(s):  
Jing Zhao ◽  
Shegang Shao ◽  
Dong Ni ◽  
Xiaodong Shang ◽  
Xiaofeng Liu ◽  
...  
Keyword(s):  
Surface Albedo ◽  
Highway Construction ◽  
Road Construction ◽  
Dust Control ◽  
Control Measures ◽  
Combination Method ◽  
Highway Design ◽  
Extension Direction ◽  
The Impact ◽  
Main Factor

Construction dust falls to the snow cover and the surface of the glacier to form a fouling layer to absorb more solar radiation and reduce the intensity of surface albedo, thereby accelerating the melting of the glacier, which is the main factor affecting the glacial environment in the Highway construction. This article adopts the combination method of wind tunnel experiment and numerical simulation was used to calculate the impact range of construction dust. The results show that with increasing of particle size, the diffusion range of dust decreased while the settlement speed increased. High dust concentration area (> 4mg / m3) is generally distributed within 1000m around the construction site. The specific extension direction is directly related to the local terrain and wind direction, and the height direction is generally not more than 300m. According to the above simulation results, for preventing and reducing the impact of highway construction on the glacial environment, the requirements of route selection and construction dust control measures was put forward, which played an important role and significance in guiding the highway design and construction and reducing the impact of highway construction on the glacial environment.

Silicosis in rhinestone-manufacturing workers in South China

2019 ◽  
Vol 69 (7) ◽  
pp. 475-481 ◽  
Author(s):  
C Wen ◽  
X Wen ◽  
R Li ◽  
S Su ◽  
H Xu
Keyword(s):  
South China ◽  
Dust Control ◽  
Control Measures ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Quartz Content ◽  
Total Dust ◽  
Silica Dust ◽  
Exposure Limit ◽  
And Control

Abstract Background Silicosis is caused by long-term exposure to silica dust. Crystal rhinestone workers can be exposed to high levels of silica dust and are at risk of silicosis. Aims To explore silicosis cases, silica dust exposure and control measures in a rhinestone factory in South China. Methods We extracted and analysed data on new silicosis cases reported to China’s occupational disease and occupational health information monitoring system between 2006 and 2012 from a rhinestone factory in South China. We measured the quartz content of bulk dust, static total and respirable dust samples. Results Ninety-eight silicosis cases were reported between 2006 and 2012. The mean duration of silica dust exposure was 9.2 years (range 3–16). Drilling and polishing workers accounted for 96 (98%) of cases. We collected 1479 static samples including 690 total dust and 789 respirable dust samples. Mean dust levels for drilling were 1.01 mg/m3 (range 0.20–3.80) for total dust and 0.51 mg/m3 (range 0.04–1.70) for respirable dust. Mean dust levels for polishing were 0.59 mg/m3 (range 0.20–2.10) for total dust and 0.28 mg/m3 (range 0.08–0.71) for respirable dust. Over a third [289/789 (37%)] of total dust samples and 129/690 (19%) respirable dust samples exceeded the national permissible exposure limit. Conclusion Exposure to silica dust, ineffective dust control measures and inefficient health surveillance may have contributed to the incidence of silicosis in the factory we studied. Identification of silica dust exposure and effective dust control measures would reduce the risk of silicosis in rhinestone workers.

Comprehensive Control of 7-Amino-Cephalsporanic Acid Dust in Drying Workshop

2014 ◽  
Vol 522-524 ◽  
pp. 481-484
Author(s):  
Jin Feng Zhang ◽  
Xin Liu ◽  
Li Min Hou ◽  
Qin Liu
Keyword(s):  
Adverse Effects ◽  
Production Process ◽  
Ventilation System ◽  
Dust Control ◽  
Control Measures ◽  
Explosion Hazard ◽  
Work Safety ◽  
Process Technology ◽  
Dust Generation ◽  
Pharmaceutical Enterprise

7-amino-cephalsporanic acid (7-ACA) is the key intermediate of cephalosporin, which has a strong sensitization and explosion hazard. So it seriously affects the worker’s health in the workshop, the environment safety out of the workshop and work safety. The drying workshop of 7-ACA at a pharmaceutical enterprise in Shijiazhuang is investigated and the production process is analyzed, the key places of dust leakage and the causes of dust generation are identified. Combined with the pollution and safety risk in drying workshop, the targeted control measures are taken from the process technology, ventilation system and dust collecting device, which effectively removed the adverse effects from 7-ACA leaking. The study provides a reference for the dust control in similar enterprises.

scholarly journals SYSTEM OF ASSESSMENT AND FORECAST OF ATMOSPHERIC AIR QUALITY AS A GOAL OF ECOLOGIZATION THE CONSTRUCTION SITE

2020 ◽  
Author(s):  
S.E. Manzhilevskaya ◽  
Keyword(s):  
Air Quality ◽  
Model System ◽  
Assessment System ◽  
Dust Control ◽  
Control Measures ◽  
Construction Site ◽  
Atmospheric Air ◽  
Air Quality Assessment ◽  
Consistent Assessment

The article analyzes the system for assessing and forecasting air quality at a construction site. Models of the air quality assessment system are considered. Dust control measures are proposed with respect to improving the health of construction site workers and a method for calculating and controlling the emissions of pollutants at a construction site. To implement the assessment of atmospheric air quality at the construction site, the model "system for assessing and forecasting the quality of atmospheric air", which allows a consistent assessment and forecast of atmospheric air quality, is presented.

Thermal Remote Sensing For Moisture Content Monitoring of Mine Tailings: Laboratory Study

2017 ◽  
Vol 23 (4) ◽  
pp. 299-312 ◽  
Author(s):  
Bonnie Zwissler ◽  
Thomas Oommen ◽  
Stan Vitton ◽  
Eric A. Seagren
Keyword(s):  
Remote Sensing ◽  
Moisture Content ◽  
Mine Tailings ◽  
Large Scale ◽  
Temporal Variations ◽  
Dust Control ◽  
Control Measures ◽  
Thermal Remote Sensing ◽  
Iron Mine ◽  
Measured Moisture Content

Abstract Mining produces massive volumes of mine tailings that are deposited into large-scale mine tailings impoundments. A key environmental objective of managing these large impoundments is mitigating fugitive dust emissions by monitoring and controlling moisture, because moisture directly affects the tailings’ strength and the ability to apply dust control measures using motorized equipment. Therefore, understanding the spatial and temporal variations in moisture content for surface tailings is critical for characterizing dust susceptibility and trafficability. Remote sensing has been proven to be a useful tool for similar applications. This study utilized laboratory testing conducted on iron mine tailings to verify that: (1) a relationship exists between moisture content and strength for the surface of mine tailings, and (2) thermal remote sensing can be used to infer spatial variations in moisture content for surface tailings. Multivariate regressions were developed to identify the critical remote sensing and climatic variables and evaluate their influence in remotely measured moisture content. For tailings samples collected from two different North American iron mines, regressions using sample temperature and ambient humidity were able to predict surface moisture content (R2> 0.9).

Tunnel Construction Dust Monitoring and Dust Control Technology of High Altitude and High and Cold Area

2014 ◽  
Vol 587-589 ◽  
pp. 703-708
Author(s):  
Yu Xu ◽  
Dong Hui Yang ◽  
Yu Wei Zhang
Keyword(s):  
High Altitude ◽  
Membrane Filter ◽  
Dust Concentration ◽  
Dust Control ◽  
Control Measures ◽  
Tunnel Construction ◽  
Distribution Law ◽  
Cold Area ◽  
Environment Study ◽  
Filter Dust

In order to improve the high altitude harsh construction environment, study tunnel construction dust concentration and distribution law of different construction section, using the membrane filter dust method to achieve the dust concentration of different section, using the statistical to analysis the origin and distribution law, putting forward different dust control measures for different construction stages, to improve the high altitude tunnel construction environment. The results of dust prevention and control of high altitude region are of great significance.

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