| Summary: | 碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 100 === A well-designed air pollution prevention device can successfully decrease the amount of air pollution as well as increasing the production efficiency. It is also considered as an easier approach in pollution reduction. According to operation laws, regular inspection is required to stationary pollution sources, while advices or penalty is given to those not qualified. Since the inspection is implemented on a periodical basis, the quality of prevention equipments is essential to the effectiveness of pollution process. The current research aims at delivering a parametric study on the device efficiency based on the theoretical prediction and on-site measurement to five factories of distinct processes. Pollution concentrations before and after the measurement devices are taken from the aforementioned factories according to EPA (Environmental Protection Administration) released standards, such as NIEA A413.74C，A101.73C and A723.72C. These results are served as a reference to the implemention of stationary pollution control.
Research results show that no siginificant difficicney is observed between the realistic measurement and theoretical prediction of the prevention devices. For example, WS-1、WS-3、WS-4 yields realistic efficiency as 79.18%, 45.8%, and 93.6%, while the theoretical prediction are 83.53%, 48.36%, and 96.28% respectively. However, both of these results still fall behind the regulations,Considering the factors affecting equipment efficiency, decreasing the pressure of a wet scrubber to a certain ragne increases the liquid-gas ratio and nozzle pressure. Additionally, changing the type of filter medium and spray height remarkably enlarges the removal efficiency to gasous pollutants. To bag houses, choosing filter bags with higher parameter bears better removal efficiency to particulate pollutants. For instance, the removal efficiency of BH with filter fiber parameter (σ)=1000m-1 and t=5min yields removal efficiency up to 92%.
The following control strategies to stationary pollution sources are then drawn from the results of current study. 1. Careful control and inspection per pollution components and percentage. 2. Careful examination and verification to equipment specification. 3. Enforcement to the management and inspection of permitted values. 4. Enforcement and implementation to the operation manual of prevention equipments. 5. Proper adjustment to the period of inspection. 6. Implementation to the automatic inspection equipments.
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