Release characteristics and risk assessment of volatile sulfur compounds in a municipal wastewater treatment plant with odor collection device

被引:2
|
作者
Ma, Linlin [1 ]
Zhao, Ruhan [1 ]
Li, Jiaxin [1 ]
Yang, Qing [1 ]
Liu, Yong [2 ]
机构
[1] Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
[2] Tianjin Acad Ecoenvironm Sci, State Environm Protect Key Lab Odor Pollut Control, Tianjin 300191, Peoples R China
基金
中国博士后科学基金;
关键词
Volatile sulfur compounds; Wastewater treatment plants; Odor collection device; Release characteristic; Sensory evaluation; PRETREATMENT; DIGESTION; BIOSOLIDS; EMISSION; EXPOSURE; VSCS;
D O I
10.1016/j.jenvman.2024.120321
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Due to the malodorous effects and health risks of volatile sulfur compounds (VSCs) emitted from wastewater treatment plants (WWTPs), odor collection devices have been extensively utilized; however, their effectiveness has rarely been tested. In the present investigation, the characteristics of VSCs released in a WWTP equipped with gas collection hoods are methodically examined by gas chromatography. The obtained results indicate that the concentration of VSCs in the ambient air can be substantially reduced, and the primary treatment unit still achieves the highest concentration of VSCs. Compared to WWTPs without odor collection devices, the concentration of H2S in this WWTP is not dominant, but its sensory effects and health risks are still not negligible. Additionally, research on the emission of VSCs from sludge reveals that the total VSCs emitted from dewatering sludge reaches the highest level. Volatile organic sulfur compounds play a dominant role in the component and sensory effects of VSCs released by sludge. This study provides both data and theoretical support for analyzing the effectiveness of odor collection devices in WWTPs, as well as reducing the source of VSCs. The findings can be effectively employed to optimize these devices and improve their performance.
引用
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页数:8
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