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硫酸盐还原菌促进市政污泥厌氧发酵产乙酸

沈 志 刘 和 许科伟 李秀芬 陈 坚

沈 志, 刘 和, 许科伟, 李秀芬, 陈 坚. 硫酸盐还原菌促进市政污泥厌氧发酵产乙酸[J]. 环境科学研究, 2009, 22(9): 1056-1062.
引用本文: 沈 志, 刘 和, 许科伟, 李秀芬, 陈 坚. 硫酸盐还原菌促进市政污泥厌氧发酵产乙酸[J]. 环境科学研究, 2009, 22(9): 1056-1062.
SHEN Zhi, LIU He, XU Ke-wei, LI Xiu-fen, CHEN Jian. Improvement of Acetate Production from Anaerobic Fermentation of Sewage Sludge by Sulfate Reducing Bacteria[J]. Research of Environmental Sciences, 2009, 22(9): 1056-1062.
Citation: SHEN Zhi, LIU He, XU Ke-wei, LI Xiu-fen, CHEN Jian. Improvement of Acetate Production from Anaerobic Fermentation of Sewage Sludge by Sulfate Reducing Bacteria[J]. Research of Environmental Sciences, 2009, 22(9): 1056-1062.

硫酸盐还原菌促进市政污泥厌氧发酵产乙酸

基金项目: 江苏省太湖专项(BS2007098);江苏省“十一五”科技支撑计划项目(BE2008627)

Improvement of Acetate Production from Anaerobic Fermentation of Sewage Sludge by Sulfate Reducing Bacteria

  • 摘要: 添加各浓度钼酸盐考察不同抑制水平下硫酸盐还原菌(SRB)对市政污泥发酵产酸的作用. 结果表明:在有硫酸盐存在时,未抑制SRB体系中ρ(乙酸)占ρ(总VFAs)的比例可达83%,无丙酸、丁酸积累;而在SRB高抑制水平体系中,ρ(乙酸)只占约40%. 随后以未添加硫酸盐体系为对照,研究了硫酸盐投加方式及在发酵中后期抑制SRB对产物中挥发性脂肪酸(VFAs)成分及其浓度的影响;同时,通过对dsrA酶的编码基因含量定量分析发现,随着硫酸盐的加入,SRB数量速增,产物中丙酸、丁酸先后转化为乙酸,且ρ(乙酸)占ρ(总VFAs)的比例可达90%以上. 添加SRB可作为实现污泥发酵定向累积乙酸的调控手段.

     

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出版历程
  • 收稿日期:  2009-01-15
  • 修回日期:  2009-02-20
  • 刊出日期:  2009-09-25

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