| 英文摘要 |
The completed tasks in this project include: (1) On-site inspection and documentation of the operational compliance of 34 dioxin emission source factories; (2) Review and documentation of 89 dioxin emission source declaration data and testing reports, as well as on-site supervision of 12 factory inspections, regular inspections, improvement activities, and operating permit applications; (3) Inspection and testing of 8 dioxin emission pipes; (4) Testing of the emission characteristics of 5 key industry pipes for heavy metal emissions; (5) Air quality monitoring for hazardous air pollutants in specific industrial areas in August; (6) Seasonal environmental air dioxin status investigation in 3 densely populated areas with dioxin pollution sources; (7) Investigation and testing of 20 emission pipes for organic hazardous air pollutants and inspection and testing of 6 emission pipes for organic hazardous air pollutants; (8) Testing of PM2.5 emission characteristics in 3 key industry pipes; (9) Assistance in analyzing pollutants during the Taiwan Photonics fire incident; (10) Revision of on-site emergency response standard operating procedures for air pollution events, maintenance and updating of the emergency response system for disaster air pollution events, submission of emergency response measures for air pollution incidents, and maintenance of the review system and patrol system databases; (11) Implementation of environmental education training sessions and regulatory explanation meetings in accordance with the service proposal.
The on-site inspection work of this project involves a total inspection of 34 dioxin emission sources. The inspection focuses on various operational parameters on-site, such as the input volume of regulated factories, incinerator operation, pollution control equipment operation status, and sampling facility conditions. Scientific instruments are used for verification to effectively control the operation status of pollution control equipment in each factory. Three fixed pollution sources were found to have operational conditions not in compliance with the operating permit, and improvement and follow-up were requested.
The project reviewed 89 reports, testing plans, and other related documents submitted by dioxin emission sources within the jurisdiction of Taoyuan City. Twelve inspections were conducted at regulated dioxin emission sources. Three instances were found to have damaged or non-compliant sampling equipment, and a re-sampling was requested.
Eight inspections were conducted for regulated dioxin emission sources, and no violations of emission standards were found.
The annual Dioxin emissions of all Dioxin emission sources in 2023 were estimated to be 0.032 g-TEQ/year from large incinerators, 0.013 g-TEQ/year from medium incinerators, 0.042 g-TEQ/year from small incinerators, 1.46 g-TEQ/year from electric arc furnaces, 0.007 g-TEQ/year from auxiliary fuel – waste liquid, 0.423 g-TEQ/year from auxiliary fuel – sludge, 0.078 g-TEQ/year from auxiliary fuel – saw dust, 0.016 g-TEQ/year from auxiliary fuel – coal – water slurry, 0.116 g-TEQ/year from boiler power generation or steam power co-combustion boilers, 0.0007 g-TEQ/year from crematories, 0.190 g-TEQ/year from secondary copper smelting, 0.016 g-TEQ/year from aluminum and other metal secondary smelting, and 0.017 g-TEQ/year from other processing industries. Total emissions in 2023 was 2.412 g-TEQ/year, accounting for about 1/20 of the national Dioxin annual emissions (47.7 g-TEQ/year) in 2020 estimated by the EPA.
The project completed air dioxin testing in August for the specific industrial zone - Taoyuan Environmental Protection Science and Technology Park downwind area, as well as four-season dioxin pollution source-intensive areas - Yong'an Elementary School in Xinwu District, Shulin Elementary School in Guanyin District, and Chao Yin Elementary School in Dayuan District. The dioxin concentration in the air ranged from 0.008 to 0.101 pg TEQ/Nm3, with an average of 0.038 pg-TEQ/m3, comparable to the monitoring values at 23 air quality monitoring stations of the Environmental Protection Administration (concentration range N.D.~0.120 pg-TEQ/m3, average value 0.022 pg-TEQ/m3), and lower than the annual average value of 0.6 pg-TEQ/Nm3 set by the Japanese perimeter air dioxin environmental quality standard.
The results of monitoring hazardous air pollutants such as heavy metals and volatile organic compounds in the perimeter air of the Taoyuan Environmental Protection Science and Technology Park comply not only with the perimeter standards in the "Hazardous Air Pollutants Emission Standards for Fixed Pollution Sources" but also with standards set by the World Health Organization (WHO), the European Commission (EC), the Ministry of the Environment of Japan, and the Texas Commission on Environmental Quality (TCEQ) in the United States. Only hydrochloric acid and ammonia were detected in the air, and their monitoring results were below the perimeter standards in the "Air Pollutants Emission Standards for Fixed Pollution Sources."
In the current year, investigations were conducted on boilers using wood chips and SRF as fuel, as well as medical waste incinerators. The PM2.5 mass concentrations in PM2.5 in the Chimney Stack Monitoring of Aclontek, Li Peng Yang Mei, and JiaDe Technology Development plants are mainly CPM. Because all three plants have processes that inject urea to reduce nitrogen oxides, sulfur salts, ammonium ions, and other species are present in the exhaust gas, and aerosols such as ammonium sulfate are formed in the atmosphere after emission.
In the Taoyuan Environmental Science and Technology Park, verification of odor pollution sources was carried out using FTIR to identify the pollutants causing the odor. During the FTIR monitoring period, samples were collected from the Environmental Science and Technology Road, nearby factory pipelines, and storage pits. Significant concentration differences were found in the storage pit samples analyzed by FID and PID, and it was confirmed to be influenced by methane. Comparisons of FTIR, factory process areas, pipelines, and pit analysis data revealed that methane, ammonia, hydrochloric acid, etc., were only detected in the samples collected at Boyu, Lisheng, and Greenway; Propylene glycol methyl ether acetate (PGMEA), butane, methanol, isobutene, propylene, and 1,3-butadiene were detected at Shangda.
The emergency response plan submission system for air pollution incidents of listed factories has been completed and continues to be maintained. Factories can fill in or upload various data directly online, and after completion, it can be transformed into an action plan, which can be reviewed online. This facilitates the subsequent conversion of all factory data into electronic files within the bureau. When the Environmental Protection Administration adds chemical factories to the list in the future, the air pollution incident emergency response plan submission system can be used for rapid review.
The screening process involved selecting fixed pollution sources from the top 100 in terms of VOC emission and utilizing materials listed in the "Hazardous Air Pollutants Emission Standards for Fixed Pollution Sources." A total of 15 factories with 20 emission pipes underwent an investigation into the current status of organic compound emissions from the discharge pipes. Additionally, inspections and tests were conducted on 6 factories with 6 emission pipes. The results of the emission concentration inspection and testing for the discharge pipes of Huashengxing, Sanneng Coatings, and Taiwan Nippon Paint did not comply with the "Hazardous Air Pollutants Emission Standards for Fixed Pollution Sources. In the future, it will cooperate with Taiman Company to provide guidance on reducing emissions.
|