Monitoring of hydrogen sulfide (H₂S) emissions in a Waste Storage Facility – France

Ellona deployed three WT1 Pro sensors equipped with H₂S detectors at the community’s landfill site. These sensors were strategically positioned to cover different areas potentially affected by gas emissions. The sensors were configured to collect real-time data on H₂S concentrations throughout the day. Meanwhile, resident complaint data was collected and analyzed to identify specific periods and areas of concern.

Measurements taken by the WT1 Pro sensors showed an increase in H₂S concentrations during the day, typically peaking between 12 PM and 9 PM, followed by a significant decrease. Local differences between sensors were also observed, highlighting the potential impact of weather conditions and proximity to the emission source. Comparing this data with resident complaints, it was found that H₂S concentrations did not always correspond to the times when complaints were most frequent.

1. Consistent measurements from the WT1 Pro sensors confirmed some level of olfactory pollution around the landfill site.
2. The H₂S levels measured did not fully explain the strong reactions of residents at certain times. A thorough analysis revealed that, although sometimes perceptible, H₂S concentrations were generally below critical thresholds for harmful exposure.
3. The implementation of the WT1 Pro sensors provided a better understanding of H₂S emissions and laid the groundwork for future actions aimed at optimizing odor management at the community landfill site.

The use of Ellona WT1 Pro sensors was crucial for assessing and monitoring hydrogen sulfide emissions at the landfill. While the measured levels did not fully justify the resident complaints, this initiative allowed for preventive measures to be taken and discussions to improve the quality of life for surrounding residents and strengthen the environmental management of the site.