According to statistical data, among the total emissions of various air pollutants, the exhaust emissions of vehicles from mobile pollution sources are the most serious. Among them, particulate pollutants emitted by diesel vehicles are one of the main sources of pollution that affect air quality. In order to control the mobile pollution source mainly based on diesel engines in this county and reduce its pollution emissions, in order to reduce the health hazards caused by air pollution to the county residents, the Hualien County Environmental Protection Bureau implemented the "Hualian County Garbage Truck Installation Smoke Filter Demonstration Operation" this year. "Plan", the implementation of smoke filters installed in real vehicles to improve the county's air quality.
The operation data of the garbage trucks installed with smoke filters implemented by this plan will be analyzed, and the implementation results and practical experience of this plan will be integrated to provide appropriate suggestions for the county ’s diesel vehicle smoke control. References to fixed control strategies.
The current achievements of this project are summarized as follows:
(1) Education and training
This year, the company has completed 2 educational training operations; on April 16 (Tue) and October 25 (Fri), 108: 108 to 17:00, the cleaning team of the fake Hualien City Office (Bolian, Hualien City, Hualien County) No. 10-4 Street), and invite the attendees to be the squad leader, squad leader and driver of the cleaning team of Hualien City Office.
(2) Questionnaire survey
The questionnaire survey should be carried out quarterly. In this stage, a total of 4 questionnaire surveys were completed in January, April, July, and October of 108 years, and a total of 80 questionnaires were recovered.
Based on the results of the aforementioned questionnaires, during the statistical period of this stage, the overall evaluation of the first questionnaire survey was poor, and the overall evaluation of the fourth questionnaire survey was the best; the results of the four questionnaire surveys showed that the overall evaluation seemed to be consistent with team service satisfaction (Question 3) Relevant, in the second and fourth times of 100% satisfaction, the overall performance is better, indicating that in addition to the impression of system stability, the service quality and speed of the team when the user encounters a failure or needs assistance, how much The overall evaluation.
(3) Demonstration operation status
The 20 groups of smoke filter systems in the demonstration operation of this project are mostly caused by imprecise system installation and original design. Although most of the problems are in small places, the problems for users and managers are very huge. The problem is mainly due to the high failure rate of the above parts (ignition needle, fuel injection nozzle, temperature sensor), causing the system to fail to regenerate smoothly, and subsequent subsequent failures of other parts (such as filter damage, etc.), the demonstration operation at this stage During this period, the fault frequency of the fuel injection nozzle was the highest, and the faults of the ignition needle and the temperature sensing rod improved slightly, but they still continue to occur. Although the team continues to work hard, the original factory still cannot provide a complete and effective solution, especially The problem with the fuel injection nozzle is the biggest, and the system stability still needs to be improved.
(4) Field station detection
During the phase work, a total of 2 station inspections were carried out, which were carried out in January and July 108 respectively. Although some vehicles have higher station inspection values, such as January 108, 883-BH and July 750-BH, 125 -0.6 m-1 of SM, but all test results are in line with 0.6 m-1 standard.
(5) Horsepower ratio analysis
According to this plan, the horsepower ratio data analysis of 20 cigarette filters installed is shown in Table 5.5-1. According to the statistics in Table 5.5-1, the difference between the detected horsepower ratio and the basic value during the demonstration operation at this stage is a maximum of 6% and a minimum of 0% (no difference), showing that the difference in horsepower ratio before and after the installation of smoke filters in most vehicles is not large.
Statistics of the difference in horsepower ratio show that among 40 vehicles, 3 have no difference in horsepower ratio (7.5%), 8 have less than 1% horsepower ratio (20%), and 8 have less than 2% horsepower ratio ( (Accounting for 20%), 7 vehicles with a horsepower ratio of ± 3% (17.5%), 9 vehicles with a horsepower ratio of ± 4% (22.5%), 4 vehicles with a horsepower ratio of ± 5% (10%), The ratio of one horsepower horsepower is ± 6% (accounting for 2.5%).
(6) Analysis of removal efficiency
1. The opacity test data of 20 smoke filter vehicles in this project is summarized in Table 5.6-1, and the average black smoke removal rate of 40 smoke filter vehicles is 91.5%. The maximum value of the opacity of the basic value measurement is 2.9 m-1, the minimum value is 1.0 m-1, and the average value is 1.5 m-1; the maximum value of the opacity is periodically detected at this stage is 0.3 m-1, the minimum value It is 0.0 m-1, and the average value is 0.12 m-1.
2. At this stage, 20 vehicles equipped with smoke filters have an average black smoke removal rate of 91.5% at this stage, of which 6 vehicles have an average removal rate of 100%, and the average removal rate is between 99% and 90%. There are 7 vehicles ranging from 89% to 80% and 1 vehicle ranging from 79% to 70%; the overall effect of black smoke removal rate remains above 90%.
(VII) Assessment of reduction benefit: In summary, the current estimated PM10 reduction in this plan is 158.0 (kg / year) and PM2.5 reduction is 138.9 (kg / year).
