| 英文摘要 |
It is estimated that there are more than 70,000 construction engineering machines (referred to as construction machines hereafter) throughout Taiwan. Most of these machines are imported from Japan (more than 50%) and 34% of these machines are between the age of 10 and 15 years. For the control of pollution from construction machines, this project is an effort to help the Environmental Protection Administration for the establishment of a control framework that covers the pollution control on construction machines that were imported and are still in use. With the implementation of the pollution control strategy, it is estimated to reduce the emission of TSP by 311.6 tons and NOx by 1,228 tons every year.
The pollution from construction machines is selected as the focus of this project because the construction industry is considered one of the “leading industries” and an important part of a country’s economic development. For both economic development and environmental protection, it is a part of this project to develop the draft of Emission Standards for Imported Machines. Just like regular vehicles, a construction machine must be provided with a test report proving its compliance with the standards before it can be imported. In addition, 3 machines were selected this year to test the emission of air pollutants from construction machines as the bench mark for the establishment of in-situ testing system and methods. The test can be performed in Taiwan in case that the required test report is not available when a machine is imported.
For the purpose of the project, the “Technical guide for improvement and control of air pollutant emission from construction machines used in the construction industry（營建工程施工機具排放空氣污染物自主改善防制技術指引）” was developed to improve the highly polluting emission from construction machines. This guide provides instructions and tips on fuel control system tune-up, installation of diesel particulate filter（DPF） or eliminating old construction machines, as to speed up the improvement for the emission from construction machines in use. For the installation of DPF, the conditions of the machine and the durability of the DPF have to be evaluated. So far this year, 4 machines were selected to remove carbon deposits and the result indicated less than satisfactory effects of pollution reduction. It is suggested to have the engine, injection nozzle or injection pump serviced before removing the carbon deposits.
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