| Summary: | 碩士 === 逢甲大學 === 環境工程與科學所 === 91 === This thesis is to investigate the carrying capacity and the managing strategies of volatile organic compounds (VOC) in the Taichung coastal area. The information about VOC of stationary, mobile and biology sources were collected to calculate the total emission amount of VOC in this area.
The distribution of VOC concentration and the interrelated emission factors were simulated by some models. ISCST-3 model with geographic information systems (GIS) were used to simulate and plot the VOC concentration distribution from the stationary sources. The results show that the average and the maximum concentrations of VOC were about 4 and 8.5 mg/m3, respectively.
Caline-4 model with Win Surfer software were used to calculate and plot the VOC concentration contour from the mobile sources annually and different seasons. The results indicate that the VOC concentrations increased with adding traffic flux, and the maximum was about 70 ppb. But the VOC concentrations decreased with the distance from roadway obviously.
The contribution of VOC of biology source was estimated by the method of emission factors. In addition, the Fugacity model was used to realize the concentration distribution of sixty-eight organic compounds in different phases. In the total amount, the results show that the concentration distribution of VOC in air, water, soil, and sediment are 25.3, 29.8, 44.1, and 0.7%, respectively.
The correlation between ozone and VOC were realized by UAM-5 model. The simulating results of UAM-5 model show that the concentration of ozone keep steady even increasing VOC concentration, but it increases with adding NOX concentration obviously. So the carrying capacity of VOC in a single area cannot be obtained from the simulating results of UAM-5 model. Two methods were used to calculate the carrying capacity of VOC in the Taichung coastal area: (1) according to the building law of oil tank, the carrying capacity of VOC is about 4000 ton/year; and (2) reference to the emission amount of Yun-Lin offshore industrial estate, the carrying capacity of VOC is about 8000 ton/year. Finally, the managing strategies of VOC in the Taichung coastal area were drew up.
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