Investigation on the Emission and Diffusion of Hydrogen Sulfide during Landfill Operations: A Case Study in Shenzhen

Sustainability

Haijie He¹  Zhanhong Qiu¹  Xiaogang Wang¹  Tao Wu²  Yuhua Lu³  Hui Xu⁴  Pan Zhang⁵ 

[1] College of Civil and Architectural Engineering, Taizhou University, Taizhou 318000, China;College of civil engineering and architecture, Jiangsu University of Science and Technology, Zhenjiang 212000, China;Fangyuan Construction Group Co., Ltd., Taizhou 318000, China;School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310000, China;Xiaping Municipal Solid Waste Landfill, Shenzhen 518000, China;

关键词: landfill;    hydrogen sulfide;    diffusion;    in-situ monitoring;    static chamber;    CALPUFF model;   

DOI  :  10.3390/su13052886

来源: DOAJ

【 摘 要 】

This study investigated the emission and diffusion of hydrogen sulfide (H₂S), as one of the odorous gases generated from landfills, in a municipal solid waste landfill of a south Chinese city. To this end, the flux of the H₂S emissions in the working area of the landfill and its diffusion in the surrounding area were measured. The diffusion of the H₂S was simulated at different wind speeds, wind directions, bare working areas of the landfill, heights of the landfill, and angles between the wind direction and the long side of the working area. The results indicated that the concentration of the H₂S around the monitoring point ranged from 0 to 60 µg/m³, and the simulated data were consistent with the measured results. At a uniform wind direction, the pollution range of the H₂S was narrow. Furthermore, with an increase in the height of the waste dump, the concentration of the H₂S decreased in the working area but rose in the surrounding area. Notably, when the angle between the long side of the working area and the wind direction was 0°, the H₂S largely spread along the extension cord of the long side of the working area. When the angle increased to 90°, the influence range of the H₂S extended significantly. The working area in the landfill site should be regulated based on the monitored data to reduce the effect of this harmful gas on the living environment, and the health of the landfill staff and nearby residents.

【 授权许可】

Unknown