| 二相厌氧消化工艺硫酸盐还原细菌的研究 |
| 摘要点击 729 全文点击 1804 投稿时间：1997-01-05 |
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| 中文关键词 硫酸盐还原细菌 二相厌氧消化 UASB反应器 |
| 英文关键词 SRB two phase anaerobic digestion UASB reactor |
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| 中文摘要 |
| 采用厌氧操作技术和MPN法测定表明,产酸相中的SRB含量为2.0-5.7×106个/ml,产甲烷相中含量为0.93-9.3×107个/ml,2者之差一般约为1个数量级。单相UASB反应器的SRB含量与产甲烷相类似。在产酸相与产甲烷相的上部悬浮液中SRB含量分别为7.5×105和4.3×105个/ml,底部污泥中SRB含量分别为2.5×106和2.5×107个/ml.SRB与产甲烷细菌相比,具有较强的环境适应能力和较小的附着能力。此外,分析讨论了SRB的生长和分布特性对反应器中硫酸盐还原作用和产甲烷作用的影响与控制。 |
| 英文摘要 |
| This paper described the properties of numeration and distribution of sulfate reducing bacteria(SRB)in two phase process of UASB reactors.Using Hungate anaerobic technique and MPN determination method,it was showed that SRB of acidogenic phase are 2.0～5.7×106cells/ml,and the population of SRB in methanogenic phase are 0.93～9.3×107cells/ml.The difference of SRB between acidogenic and methanogenic phase is about 1 order of magnitude.The numeration of SRB in single UASB reactor is similar to that of methanogenic phase.The distributions of SRB exhibited that the bacterial population of acidogenic and methanogenic phase are 7.5×105 and 4.3×105 in upper layer of suspended mixed liquids,and 2.5×106 and 2.5×107 cells/ml in lower layer of anaerobic sludge,respectively.These measurements revealed that SRB can better adapt to conditional changes,and has less attachment ability to granules compared with methanogenic bacteria,which certify the possibility to treat high strength organic wastewater containing sulfate using two phase anaerobic digestion process in microbiological aspects.The effects of sulfate reduction on methanogeneses in anaerobic reactor based on the SRB growth and distribution were discussed. |
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