| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 104 === 2014 was about 5.54 million pigs in Taiwan(C.O.A,2014), Pingtung is one of the major areas of pig. The piggery wastewater is rich in organic materials can be fermented to produce biogas.The biogas is consists mainly of methane and carbon dioxide, the direct release will cause the greenhouse effect. Biogas also contains hydrogen sulfide. Hydrogen sulfide as a colorless toxic gas and has a strong corruption eggs smell, it will not only irritate the eyes and can harm the body's central nervous system, can also cause corroded in combination with metals, so that the development of biogas generation slowly.
This study is removed high concentrations of hydrogen sulfide in biogas purified by biological filter and activated carbon, and to improve the biological filter, and then purified by activated carbon ,raise the concentration of methane in the biogas.
By the biological filter, hydrogen sulfide concentration can be reduced to less than 400ppm, with the transformation of biological filter rinse setting, and create a new biological filter string together, and then adjust rinse time, hydrogen sulfide concentration can be reduced to less than 10ppm. Biogas purified by activated carbon, methane concentrations up to more than 90%, average increase of about 15%. In which the preferred adsorption capacity is coconut shell activated carbon, every 100 grams coconut shell activated carbon can purified about 6.2 liters of 80% methane.
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