| Summary: | 碩士 === 大葉大學 === 環境工程學系碩士在職專班 === 96 === This research is aimed to investigate air pollution emissions by examining pollution control equipments from the restaurants and food business at the real sites in Yunlin County. A series of experiments were conducted to obtain the control efficiency for total hydrocarbon and odor emissions.
Two hundred and thirteen different scale restaurant kitchen sites had been inspected from January to September in 2007. The information of emission control equipment, raw cooking material, emission source, and the exhaust pipeline were all examined and documented. It was found that Chinese style restaurants are the major portion (63.8%). Most of the cooking pattern is boiling (82%). From the scale of seats in service, the number of seats below 40 has the majority of 69%. Most of the sites (174 out of 213) have installed exhaust trap and duct device for the purpose of venting exhaust to atmosphere. However, it was still found that 50 sites have the connection of the exhaust ducts with sewers, which is prohibited by the regulation. With regard to the oily fume emission control equipment, 120 sites have installed and still operated. There are 118 sites (55.4%) with the front exhaust filtration device, 22 sites (10.3%) have the higher control efficiency equipment such as scrubber (77.3%) and electric precipitator.
Several studies have been performed to understand the real reduction efficiency for different control equipment combination. These studies include the detection of total hydrocarbon and odor concentrations from the exhaust inlet and vent duct outlet. The result demonstrates the kitchen with front filtration device has higher efficiency than theoretical value, with the exception of low total hydrocarbon inlet concentration.
There is various cooking fume control equipment available in the market place to reduce emission, such as hydro vents, air washers, packed tower scrubbers, and electric precipitator, etc. The restaurants that have been regulated should meet the regulation by installing suitable equipment according to the different condition and to meet the environmental standards.
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