The area of this County is 1,427.59 square kilometers and the population was 563,104 at the end of December 2020. There are 1,683 registered factories and 757 of these were listed as air pollution control factories in 2020. The total VOCs emission was3,353.41 metric tons.
The overall VOC reduction volume for this 2020project was 114.05 tons/year, out of which 1.86 and 90.85 tons/year were leaking reductions from the petrochemical industry and service stations, respectively, detected by using infrared light. Reductions of 1.96 tons/year were detected with the air-fuel ratio detector from service stations and 0.076 tons/year were reductions from checking the components of equipment, were detected with FID. As a result, reductions were achieved at79.7%, the highest and the second-highest, for service stations and the leakage of the service stations by using infrared gas imaging instruments. It is recommended that the infrared gas imaging instruments should be used continuously within this jurisdiction area for detecting leakage to those industries with heavy emissions and service stations. Each item of work achievement is briefly described as follows:
We had checked 102factories at the end of December 2020. All the factories can be approximately classified as Semiconductor industry, Optoelectronic industry, CD industry, Processing of Other Fabricated Metal Products, External Coating, Electronic Parts and Components, Printing, Tire and so on.
This project had completed checks of total 102 factories-times, including sectors such as Semiconductor industry, Optoelectronics, Compact Disks, Metallic Product Processing, Surface Coating, Electronic Parts and Components, Printing, Tire Manufacturing, and others. The total VOCs emission from factories that had been checked was 3,353.41 tons/year in 2020.
VOCs reduction guidance was mainly made for industries such as the Petrochemical industry, and Tire Manufacturing within this jurisdiction area. One of the Petrochemical industry “Croslene Chemical Industries” is planning to complete the setting of Regenerative Thermal Oxidizer (RTO) in 2021 and start to operate as well. Additionally, “Headway Advanced Materials” will expand its condensation plant to deal with exhaust emissions; one of the Tire Manufacturing “Nankang Tires” is planning to replace adsorption equipment by continuous adsorption control equipment, and renew the old washing equipment at the old factory. The overall improvements made by each factory is scheduled for completion in 2021.
Besides, all pieces of equipment and components, storage tanks and loading facilities of public and private locations within this jurisdiction area had been checked for inspections. For this declared equipment and components of the petrochemical industry within this jurisdictional area, checks were made to 6,000 components. A total of four leak sources were found at five factories (net value of checking over 1,000ppm) with reductions of 0.076 tons/year; 19.3 instances of factory performance verifications of activated carbon adsorption equipment were completed. Three public and private locations had completed their improvement with reductions of 1.96 tons/year. Total 75 service stations were checked using the air-fuel ratio detector in 2020 (total 1,663 fueling guns). A total of 1,027 fueling guns were checked randomly. 1,015fuel guns were checked “PASS” at the first check, with a first-time 98.83% “PASS” rate. 24 fuel guns were checked “PASS” at the second check, with a second-time 100% “PASS” rate. Reductions totaled 6.69 tons/year.
This detection work was conducted according to the methods set down by the Environmental Analysis Laboratory. This year, SGS has been commissioned to implement water VOCs concentration detection, emission channel NMHCs detection, odor determination, and emission channel volatile organic substance qualitative/quantitative analysis work. Chi Mei Inspection Tech Co Ltd has been commissioned to implement emission channel NMHCs detection and odor test analysis.
According to public petitions at the end of December 2020, 20 checks were made for derived unpleasant orders. There were sixteen instances of pipes being checked for NMHCs of VOC discharge pipes. However, it was difficult to check components, storage tanks, and the loading process during the petrochemical manufacturing process. A total of 78 hours of monitoring had been completed for service stations using the infrared gas imaging instruments, with a total of 34,472 points-times of equipment and components, out of which 40 points were detected having leakage: 1 points-times for component leakage, 10 points-times for non-components such as, storage tanks, loading areas, recovery facilities, and related connecting equipment, 29 points-times for service station equipment. After troubles had been completed correcting by factories, reductions were estimated based on the EPA’s emission data of equipment and components. Reductions detected by infrared gas imaging instruments totaled92.71 tons/year.
In this fiscal year, Industrial Technology Research Institute (ITRI) was commissioned to confirm and check the kinds of discharged pollutants, with a total 5 times of CC-FTIR, to understand the types of discharged pollutants from a fixed source. Subsequently, experts and scholars were also invited onsite to visit to examine and confirm the pollutants. In so doing, the implementation of factory pollution prevention had been strengthened. In this fiscal year, the screening principle for examination and confirmation mainly focused on dissipation from manufacturing processes in factories and giving guidance to poor performance of those preventive facilities. Additionally, for the discharge of pollutants from factories, guidance was given to new pollution preventive facilities or to increase the performance of the preventive equipment.
The results obtained each month under this project will be posted on the project website before the 5th of the following month. This year, 10 LED displays will be set up at gas fueling stations where the gas use is high and public awareness of the “automatic stop is the best” habit is low. This will promote the “automatic stop when fueling” policy and reduce the escape of gas at gas stations.