【摘要】 针对自行设计的硫酸盐还原菌(SRB)生物膜反应器,以底物去除反映生物膜传质,考察了水力学条件对SRB生物膜传质的影响.发现底物比去除速率随水力停留时间(HRT)增大呈指数衰减趋势降低,当HRT从4·3h增大至26h时,底物比去除速率降低约11倍;在低流速下(μb<0·01cm·s-1),液相表面流速与SRB生物膜传质速率间呈线性正比关系;确定了SRB生物膜底物比去除速率与HRT以及液相流速间的经验方程.更多还原

【Abstract】 Impacts of hydrodynamics on sulfate-reducing bacteria(SRB)biofilm mass transfer was investigated based on own-designed bioreactor,using substrate removal reflects biofilm mass transfer.The results showed that substrate specific removal rate declined exponentially with the increase of HRT,11 times lower when HRT increase from 4.3h to 26h;under low velocity(μb<0.01cm·s-1),liquid surface velocity showed direct proportion with SRB biofilm mass transfer rate;experimential equation was regressed for substrate specific removal rate,HRT and liquid velocity.更多还原