Assessment of gas dispersion near an operating landfill treated by different intermediate covers with soil alone, low-density polyethylene (LLDPE), or ethylene vinyl alcohol (EVOH) geomembrane

Feng, Yuan; Eun, Jongwan; Moon, Sunah; Nam, Yunwoo

doi:10.1007/s11356-022-22794-3

Cited by 2 publications

(1 citation statement)

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“…Thus, each location has its own unique characteristics. Where attenuation curves of large-scale odour sources (e.g., municipal dumps, abattoirs) have been published, they showed a steep drop off in the first 500 m to below 50% odour strength, followed by a rapid drop-off to about 1000 m (to ca 10%), after which attenuation slowed down [85][86][87]. Only landfills and open air composters, with their greater surface area, exhibited odour strength recordings of over 20% at the 1000 m mark [86].…”

Section: Additional Factors Of Attenuationmentioning

confidence: 99%

Attenuation of Odours in the Urban Outdoor Environment: A Rapid Review and Implications for the Conduct and Interpretation of Smell Walks

Spennemann,

Parker,

Bond

2023

Environments

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The assessment and documentation of visual, auditory, and olfactory sensory experiences within urban environments is an emerging focus of research that has implications for the understanding of cultural heritage as well as community mental health. The common methodology to identify, describe, and document smells within environmental settings is smell walks, where individuals walk predefined transects, identifying and locating encountered odours and odour attributes (e.g., intensity, hedonic tone). As the locations of smell walks vary (e.g., indoor and outdoor markets, urban parks, etc.), localised environmental parameters such as airflow and temperature affect the dispersion and attenuation of the odours, influencing the results. This paper presents a rapid, systematic review of the factors that influence the attenuation of odours in the urban outdoor environment, in particular, in the context of outdoor markets. Although there is an abundance of literature on wind patterns in urban canyons discussing the influence of microtopography, this can only be applied cum grano salis to outdoor markets settings. Various avenues for future research are outlined.

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Section: Additional Factors Of Attenuationmentioning

confidence: 99%

Attenuation of Odours in the Urban Outdoor Environment: A Rapid Review and Implications for the Conduct and Interpretation of Smell Walks

Spennemann,

Parker,

Bond

2023

Environments

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Characteristics of Unorganized Hydrogen Sulfide Dispersion for Industrial Building Layout Optimization

Guo

et al. 2022

Atmosphere

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Hydrogen sulfide (H2S) is the main toxic pollutant emitted to the atmosphere from auto-coating wastewater. Its unorganized dispersion poses a health challenge for workers. Defining safe working distance, which transfers the H2S occupational exposure limit into industrial construction design regulation, would be a useful approach for reducing H2S exposure risk. Therefore, in this study, an H2S dispersion prediction, within 25 m, was performed by a computational fluid dynamics (CFD) method to explore the influence of temperature and wind speed on H2S dispersion. With the temperature changes from 288 K to 303 K, the H2S concentration at different observing points decreased. With wind speed changes from 2 m/s to 20 m/s, the plume layer structure was studied in the whole process. According to the H2S distribution characteristics, when the sedimentation tank treatment capacity is less than or equal to 10 m3/h, the safe working distance of H2S unorganized dispersion is 10 m. Hence, when there are workplaces within 10 m of the tank, closed measures should be taken for the sedimentation tank, or the manufacturer layout should be optimized to protect the environment and human health.

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Assessment of gas dispersion near an operating landfill treated by different intermediate covers with soil alone, low-density polyethylene (LLDPE), or ethylene vinyl alcohol (EVOH) geomembrane

Cited by 2 publications

References 50 publications

Attenuation of Odours in the Urban Outdoor Environment: A Rapid Review and Implications for the Conduct and Interpretation of Smell Walks

Attenuation of Odours in the Urban Outdoor Environment: A Rapid Review and Implications for the Conduct and Interpretation of Smell Walks

Characteristics of Unorganized Hydrogen Sulfide Dispersion for Industrial Building Layout Optimization

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