| 英文摘要 |
This project commenced on August 25, 2023, and encompassed the development of sensor technology, analysis of existing data on odor complaint hotspots, planning and deployment of sensor projects, implementation of sensor data quality control mechanisms, and the application and analysis of sensor data.
In the aspect of sensor project planning and deployment, the project submitted the Odor Monitoring Point Setup Plan on August 25, 2023, which was approved by the Environmental Protection Bureau on September 11,2023. Subsequently, on September 15, 2023, the deployment of 30 mobile sensors and 10 wind direction and speed sensors was completed.
From the initiation of the project until its conclusion, a total of 30 on-site verifications of anomalies were conducted. All anomalies were resolved within 48 hours, resulting in an overall completeness rate of approximately 98% for the monitoring data.
Between September and November 2023, a total of 97 odor-related complaints were received in Dou Nan Town (斗南鎮) and Hu Wei Town(虎尾鎮). Among these, 6 cases were specifically from Hui-Lai (惠來里) and Tian-Tou (田頭里), with 4 involving open burning and 2 related to pig manure and diesel odor, occurring on October 24 and November 18, respectively. Analysis of the incident on November 18, based on the data from nearby odor sensors for VOCs, NH3, H2S, indicated no significant high values around 7 am. This suggests that either the odor persisted for a brief duration or the current sensor components lacked sensitivity, making it challenging to conduct pollution trend analysis based on the relationship between time series and concentration. For the incident on October 24, analysis of data around noon from 5 nearby sensors for VOCs, CH4S, NH3, H2S using kriging revealed higher concentrations near sensor 3100114 for VOCs, CH4S, and H2S, while NH3's high concentration area was near sensor 3100134. In summary, during these incidents, the wind direction varied from west to north-northeast, and under calm wind conditions (<1m/s), it was deduced that the noticeable pig manure odor reported by residents may have originated from odor dispersion from nearby livestock farms.
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