二相厌氧消化工艺硫酸盐还原细菌的研究  

A Study of Sulfate Reducing Bacteria in Two Phase Anaerobic Process of UASB Reactors

作　　者：竺建荣[1] 胡纪萃[1] 顾夏声[1] 

机构地区：[1]清华大学环境工程系

出　　处：《环境科学》1997年第6期42-44,共3页Environmental Science

基　　金：国家自然科学基金

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．his 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 2.0～5.7×10 6cells/ml,and the population of SRB in methanogenic phase are 0.93～9.3×10 7cells/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 7.5×10 5 and 4.3×10 5 in upper layer of suspended mixed liquids,and 2.5×10 6 and 2.5×10 7 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.

关 键 词：硫酸盐 还原细菌 二相厌氧消化 UASB反应器 

分 类 号：X781.03[环境科学与工程—环境工程] X781.03