Bioaerosol emissions variations in large-scale landfill region and their health risk impacts
作者机构：College of Environmental and Chemical EngineeringShanghai University of Electric PowerShanghai200090China Shanghai Environmental Sanitation Engineering Design Institute Co.Ltd.Shanghai200323China Shanghai Engineering Research Center of Solid Waste Treatment and Resource RecoverySchool of Environmental Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China Shanghai Institute of Pollution Control and Ecological SecurityShanghai200092China
出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)
年 卷 期：2022年第16卷第12期
页 面：101-109页
核心收录：
学科分类：0710[理学-生物学] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 0837[工学-安全科学与工程]
基 金：supported by the National Key Research and Development Program of China(No.2018YFC1900704) the National Natural Science Foundation of China(No.42077111) the Technology Innovation and Development Project of the Inner Mongolia Institute of Shanghai Jiao Tong University(China)(No.2021PT0045-02-01) the Yunnan Erhai Lake Ecosystem,National Observation and Research Station(China).
主 题：Microbial aerosols Landfill sites Health risk assessment CALPUFF
摘 要：Landfills are widely complained about due to the long-term odor and landfill gas emissions for local residents,while the bioaerosols are always neglected as another threat to on-site workers.In this study,bioaerosols samples were collected from the typical operation scenes in the large-scale modern landfill,and the emission levels of airborne bacteria,pathogenic species,and fungi were quantified and co-related.The corresponding exposure risks were assessed based on the average daily dose via inhalation and skin contact.It was found that the levels of culturable bacteria and fungi in all landfill samples were around 33–22778 CFU/m3 and 8–450 CFU/m3,and the active-working landfill area and the covered area were the maximum and minimum emission sources,respectively,meaning that the bioaerosols were mainly released from the areas related with the fresh waste operation.Acinetobacter sp.,Massilia sp.,Methylobacterium-Methylorubrum sp.and Noviherbaspirillum sp.were the main bacterial populations,with a percentage of 42.56%,89.82%,70.24%and 30.20%respectively in total bioaerosols measured.With regards to the health risk,the health risks via inhalation were the main potential risks,with four orders of magnitude higher than that of skin contact.Active-working area showed the critical point for non-carcinogenic risks,with a hazard quotient of 1.68,where 80 m protection distance is recommended for on-site worker protection,plus more careful protection measures.
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