Removal high concentration of hydrogen sulfide by bio-reactor

• Main Authors: Cheng, Chi-Yuan, 鄭棋元
• Other Authors: Tseng, Ching-Ping
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/37859366360205893076

碩士 === 國立交通大學 === 分子醫學與生物工程研究所 === 100 === In this study, three bacteria (T1, T2 and A1) were isolated for hydrogen sulfide removal. Further study on optimization of H2S removal was conducted. The results showed that oxygen was great electron receptor. Raising dissolved oxygen in medium and increased recycling of inflow medium could result in high removal efficiency of H2S. Supply additional oxygen into biofilter not only increased the removal efficiency of H2S but also increased the production of sulfate. In long-term continuous operations, which inlet concentrations ranged from 3500 to 5000 ppm and retention time was 2 min, results showed that T1 was a great elimination capacity of H2S. The highest elimination capacity reached to 117 g-S/m3/h and the maximum elimination capacity reach to 183 g-S/m3/h. The highest elimination capacity for T2 reach to 79 g-S/m3/h and the maximum elimination capacity achieved to 150 g-S/m3/h. In A1, the highest elimination capacity was up to 38 g-S/m3/h and the maximum elimination capacity was reached to 133 g-S/m3/h. These results suggested that the biofilter conducted by the isolates could be used as a guide for the scale-up system of H2S purification.