The study of treating waste gases containing volatile organic compounds by biofilter method

• Main Authors: Lu, Cheng-Chi, 呂正期
• Other Authors: Yang Wan-Fa
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/81334203637626695574

碩士 === 國立臺灣大學 === 環境工程學研究所 === 85 === This study uses biofilter apparatus with auto-continuous monitoring volatile organic compounds (VOCs) and auto-spraying water functions, to simulate waste gases containing ethyl acetate, toluene, and xylene. Experiments are divided into two parts for different operations and purposes: 1.steady state experiment-take well mixing compost, rice corn and sludge as filter material, and continuously supply simulating waste gases into the biofilter; 2.unsteady state experiment-take well mixing compost, rice corn, sludge and activated carbon as filter material, and non-continuously supply simulating waste gases into the biofilter as the working style of factories production processes. According to the experiment results, for steady state experiment, the average efficiencies of total treatment are 91.50%, 69.98% and 64.73%, also, the loading of filter bed are 0.1594g/g filter material, 0.5342g/g filter material and 0.0584g/g filter material, for ethyl acetate, toluene, and xylene, respectively. For unsteady state experiment, the average efficiencies of total treatment are 76.77%, 51.77% and 70.06%, also, the loading of filter bed are 0.1724g/g filter material, 0.0710g/g filter material and 0.1254g/g filter material, for ethyl acetate, toluene, and xylene, respectively. From the results above, it can be concluded that it is better to treat ethyl acetate and toluene by steady state operation, and also means activated carbon has less effect on the VOCs. In the contrary, xylene has higher treatment efficiency by unsteady state operation, and activated carbon has more effects on xylene.