Civil and Environmental Engineering Department, Florida International University, 10555 West Flagler Street, Engineering Center, Miami, FL 33174, United States.
Civil and Environmental Engineering Department, Florida International University, 10555 West Flagler Street, Engineering Center, Miami, FL 33174, United States.
Waste Manag. 2019 Apr 1;88:39-47. doi: 10.1016/j.wasman.2019.03.028. Epub 2019 Mar 19.
Odors emitted from landfills can result in complaints by the residents living near the landfills. The aim of this study was to develop an assessment and delineation tool to identify the areas which can be impacted by the odors released from landfills based on land use characteristics and atmospheric conditions; and estimate the number of people who may be impacted. Odor emissions and dispersion analyses were conducted for three case study landfills under different atmospheric conditions in view of the land use characteristics around each landfill. Odor emissions and odor intensity levels were estimated based on the total gas production and the level of odorous compounds present in the landfill gas using the Landfill Gas Emissions Model (LandGEM) software. To delineate the odor impact zones, air dispersion characteristics of the odorous gases were analyzed using the dispersion modeling software, Areal Locations of Hazardous Atmospheres (ALOHA), and mapped using ArcGIS. Impact zone analyses were conducted based on the odor perception thresholds. The methodology developed involved coupling landfill gas emissions model (LandGEM), dispersions model (ALOHA) and mapping software for land use and population density (ArcGIS) allows visualization of the potential impact zones for preliminary delineation of the buffer zones around landfills, developing appropriate mitigation measures in view of the changing land use characteristics and population density around the existing and planned landfills. The odor impact zone delineation methodology was named Land-OZ (short for Landfill Odor Impact Zone). Results of using the odor impact zone tool showed that atmospheric stability could increase the odor impact radius around the three landfills evaluated between 340 and 1100 percent depending on the land use characteristics of the surrounding areas.
垃圾填埋场散发的气味可能会导致居住在垃圾填埋场附近的居民投诉。本研究旨在开发一种评估和划定工具，根据土地利用特征和大气条件，确定可能受到垃圾填埋场释放的气味影响的区域，并估计可能受到影响的人数。针对每个垃圾填埋场周围的土地利用特征，在不同的大气条件下对三个案例研究垃圾填埋场进行了气味排放和扩散分析。气味排放和气味强度水平是根据总气体产生量和垃圾填埋气中存在的恶臭化合物水平来估算的，使用了垃圾填埋气排放模型 (LandGEM) 软件。为了划定气味影响区域，使用空气扩散模型软件（Areal Locations of Hazardous Atmospheres，ALOHA）分析了恶臭气体的空气扩散特征，并使用 ArcGIS 进行了映射。根据气味感知阈值进行了影响区域分析。所开发的方法涉及耦合垃圾填埋气排放模型（LandGEM）、扩散模型（ALOHA）和土地利用及人口密度绘图软件（ArcGIS），允许可视化潜在影响区域，初步划定垃圾填埋场周围的缓冲区，并根据现有和计划中的垃圾填埋场周围土地利用特征和人口密度的变化，制定适当的缓解措施。该气味影响区域划定方法被命名为 Land-OZ（垃圾填埋气味影响区域的缩写）。使用气味影响区域工具的结果表明，大气稳定性可能会使三个评估的垃圾填埋场周围的气味影响半径增加 340%至 1100%，具体取决于周围地区的土地利用特征。
