基于生物阴极MFC的PRB中试系统处理AMD研究  

Treatment of AMD through the pilot-scale SRB bio-cathode PRB based on cylindrical MFC

作　　者：蔡昌凤[1] 孙敬 罗飞翔[1] 徐建平[1] 何双双[1] 胡守恒 郭润强 沈宏辉[1] CAI Chang-feng SUN Jing LUO Fei-xiang XU Jian-ping HE Shuang-shuang HU Shou-heng GUO Run-qiang SHEN Hong-hui(College of Biological and Chemical Engineering,Anhui Polytechnic University,Wuhu 241000,China)

机构地区：[1]安徽工程大学生物与化学工程学院,安徽芜湖241000

出　　处：《煤炭学报》2016年第9期2352-2358,共7页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51274001);煤炭资源与安全开采国家重点实验室开放课题资助项目(SKLCRSM10KFA05)

摘　　要：为研究基于SRB生物阴极微生物电池(MFC)的固定化硫酸盐还原菌可渗透反应墙(PRB)对提高PRB处理酸性矿井废水(AMD)效果的影响,构建了中试系统,考察了进水不同p H值、重金属离子浓度及不同HRT对系统处理AMD效果的影响。结果表明:(1)MFC区有很好的调节p H功能,进水p H=3,仍能调节PRB生化反应区进水及系统出水稳定在6.5左右。(2)重金属离子的去除以MFC区为主,系统最终出水重金属离子去除率在95%左右;调节HRT=4~2 d,Fe^(2+),Cu^(2+),Zn^(2+),Ni^(2+)去除速率750~1 500 mg/(m^3·h),而Mn^(2+)去除速率略低为600~1 000 mg/(m^3·h)。(3)硫酸根的去除速率随碳源减少呈下降趋势;MFC外电压随碳源以及菌量的变化而显著变化。To study the in-situ treatment of acid mine water by bio-cathode permeable reactive barrier MFC based on immobilized sulfate-reducing bacteria,a pilot-scale PRB was conducted to investigate the effects of different p H,HRT and concentrations of heavy metals. The results show that：（1） p H and HRT have no significant impacts on p H of influent,MFC can still adjust the effluent p H steadily at around 6. 5.（2） The removal of heavy metals is removed primarily by MFC area. But heavy metal removal decreased slowly with HRT from 4 days to 2 days. Fe^2＋,Cu^2＋,Zn^2＋,Ni^2＋removal rate increased from 750 mg /（ m^3·h） to 1 500 mg /（ m^3·h）,however Mn^2＋removal rate is increased from 600 mg /（ m^3·h） to 1 000 mg /（ m^3·h）.（3） The SO2-4removal rate declins with carbon reduction. MFC external voltage varies with the carbon source and the microbial biomass.

关 键 词：微生物电池 可渗透反应墙 酸性矿井废水 中试系统 SRB生物阴极 

分 类 号：X701[环境科学与工程—环境工程] X752