| Summary: | 碩士 === 嘉南藥理大學 === 環境工程與科學系 === 107 === In this study, the active regenerative Diesel particulate filter (DPF) was installed on 50 diesel garbage trucks to discuss the effect of DPF on the reduction of air pollutants emitted by diesel vehicles. Observed from 2015 to 2018, the opacity of the test vehicle before and after the installation of the filter was measured, and based on the opacity rate, 10 measurements were taken after the regular time after the installation of the DPF. Understand the situation after using the filter for a long time and reusing it. The research results show that before the installation of the DPF, there are 28 exhaust emission opacity of more than 1.2 in 50 diesel vehicles, the failure rate is 72%, and the opacity is effectively reduced after installing the DPF. The total number of effective detections of 50 times, the total number of opacity is 0, up to 49 times, the ratio of opacity to 0 is as high as 98.3%, and the opacity is not 0, only 1 time. The ratio of opacity to non-zero is only 1.7%, and only one of the vehicles in the ninth test has an opacity exceeding the emission standard of opacity of 0.6. The cause is the filter. Damaged or not developed due to regular maintenance, and other vehicles did not have this problem, indicating that DPF installation and long-term regeneration use has the effect of reducing particulate pollutants.
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