This project was implemented on December 1, 2015. The job scope included the following seven tasks: screening vehicles and conducting field investigation to match vehicles, performing vehicle condition inspection before installing the particulate filters, installing the particulate filters, performing inspection after installing the particulate filters, performing maintenance on the particulate filters, at least carrying out a comprehensive functional validation testing of the particulate filters on a regular basis as per the diesel vehicle inspection methods announced by the Environmental Protection Administration under the Executive Yuan, and conducting a quarterly educational and training session. The tasks that had been completed by the time this report was submitted are shown in Table 1. The results were as follows:
1. Screening vehicles and conducting field investigation to match vehicles
An investigation was performed on 42 diesel vehicles of 13 cleaning squadrons on the list provided by the Environmental Protection Bureau between November 24 and December 4, 2015.
2. Performing inspection after installing the particulate filters
After installing the particulate filters on 30 garbage trucks, the power-to-weight ratio of the trucks and the opacity of smoke emitted by their engines were measured between December 24, 2015 and February 25, 2016.
3. Re-installing the particulate filters
As it was planned that the garbage truck with plate No. 443-RL in Xinpi Township would be scrapped, its particulate filter was re-installed on the garbage truck with plate No. 875-UJ on April 26, 2016. Also, as the engine of the garbage truck with plate No. 071-SK in Ligang Township was too old, its particulate filter was re-installed on the garbage truck with plate No. 2613-FD on July 27, 2016.
4. Performing maintenance on the particulate filters
Maintenance on the particulate filters was performed a total of 23 times between January 2016 and November 2017 (once a month). A total of 29 filters were reported online for emergency repair due to malfunction. The total number of filters repaired was 69.
5. Explanation on the malfunction of the particulate filters
We obtained technical authorization from Chiauying Electric Co., Ltd. in 2016, and commissioned Chiata Industrial Co., Ltd. to improve the combustion system of the particulate filters and to remove water in their fuel tanks in November 2016, as well as in February and March 2017, after which their performance has been significantly enhanced. Currently, quarterly functional testing suggests that the smoke removal rate of said particulate filters meets the requirement, since it is over 80%. Also, inspection frequency is increased to increase regeneration frequency and minimize the possibility of nozzle clogging and cartridge breakage.
6. Periodic vehicle inspection
(1)The first periodic inspection was performed on March 31, 2016, and a total of 15 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on August 3, 2016.
(2)The second periodic inspection was performed on August 8, 2016, and a total of 14 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on November 22, 2016.
(3)The third periodic inspection was performed on November 7, 2016, and a total of 2 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on February 13, 2017.
(4)The fourth periodic inspection was performed on January 10, 2017, and a total of 6 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on February 23, 2017.
(5)The fifth periodic inspection was performed on April 18, 2017, and a total of 3 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on May 18, 2017.
(6)The sixth periodic inspection was performed on July 15, 2017, and a total of 6 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on August 30, 2017.
(7)The seventh periodic inspection was performed on September 25, 2017, and a total of 6 garbage trucks failed to comply with the provisions of the contract. A re-inspection was conducted on December 2, 2017.
7. Vehicle self-inspection maintenance
(I) The first periodic self-inspection maintenance was performed on January 9, 2017, and completed on February 21, 2017.
(II) The second periodic self-inspection maintenance was performed on April 10, 2017, and completed on May 5, 2017.
(III) The third periodic self-inspection main tenance was performed on June 2, 2017, and completed on July 31, 2017.
(IV) The fourth self-inspection maintenance was performed on September 1, 2017, and completed on September 20, 2017.
8. Education and Training
Eight educational and training sessions were conducted: February 19, 2016, April 27, 2016, August 19, 2016, November 17, 2016, March 14, 2017, May 26, 2017, September 5, 2017, and November 3, 2017.
9. Benefit assessment
It is estimated that approximately 0.097 tons of PM2.5 and 0.167 tons of TSP were reduced.
