EVALUATION OF DUST EMISSION RATE FROM LANDFILL MINING ACTIVITIES

IF 1.2 Q4 ENGINEERING, ENVIRONMENTAL
Mohammed Zari, Richard Smith, Rebecca Ferrari
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Abstract

Mining operations are one of the most significant sources of particulate emissions in the atmosphere. Landfill mining (LFM) process activities, including excavation, screening, shredding, and equipment handling, have the potential to emit particulate matter into the environment as short-term episodic emissions during operational periods. Previous investigations show that LFM activities can potentially cause human health and environmental impacts through exposure of these emissions. This paper evaluates the dust emission rate of such activities to understand factors responsible for higher emissions rate and determine where any pressure points exist in order to mitigate risk. Nine empirical formulas were adopted from surface mining activities, including point, line, and area sources of activity. Parameters identified in the equations were adjusted to LFM application conditions. From emission results, it is observed that point source activities were the major sources of emission. The study area was divided into multiple phases and one phase cumulative for the maximum/average/minimum point sources emissions over the lifetime of the landfill mining operation calculated in this study are approximately 5.04 tonnes (t) / 3.23 (t) / 1.61 (t), respectively. However, the one phase cumulative for the maximum/average/minimum line sources emissions over the lifetime of the landfill mining operation are approximately 100.8 (kg/m) / 40.32 (kg/m) / 20.16 (kg/m), respectively. Mitigation measures to control high emission rate of LFM related activity, such as utilising tankers or bowsers to spray water around the LFM area, to control airborne emissions, should be considered. The results of this research are expected to inform air dispersion modelling for environmental impact assessment studies of air pollution.
垃圾填埋场采矿活动的粉尘排放率评估
采矿作业是大气中微粒排放的最主要来源之一。垃圾填埋场采矿(LFM)过程活动,包括挖掘、筛选、粉碎和设备处理,都有可能在作业期间以短期偶发排放的形式向环境中排放颗粒物。以往的调查显示,低频炉处理活动可能会通过接触这些排放物对人类健康和环境造成影响。本文对此类活动的粉尘排放率进行了评估,以了解造成较高排放率的因素,并确定存在哪些压力点,从而降低风险。本文采用了地表采矿活动中的九个经验公式,包括点、线和区域活动源。根据 LFM 的应用条件对公式中确定的参数进行了调整。从排放结果来看,点源活动是主要的排放源。研究区域被划分为多个阶段,本研究计算出的垃圾填埋场采矿作业生命周期内最大/平均/最小点源排放量的单阶段累积值分别约为 5.04 吨(t)/3.23 吨(t)/1.61 吨(t)。然而,在堆填區開採期內,最大/平均/最小線源排放量的一階段累積值分別約為 100.8 (kg/m) / 40.32 (kg/m) / 20.16 (kg/m)。应考虑采取缓解措施,控制垃圾填埋场采矿相关活动的高排放率,例如利用水罐车或水车在垃圾填埋场采矿区周围喷水,以控制空气中的排放物。这项研究的结果有望为空气污染环境影响评估研究的空气扩散模型提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Detritus
Detritus ENGINEERING, ENVIRONMENTAL-
CiteScore
3.30
自引率
23.50%
发文量
45
审稿时长
15 weeks
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