单室微生物燃料电池处理黑水产电试验研究  

ELECTRICITY PRODUCTION OF SINGLE CHAMBER MICROBIAL FUEL CELL TREATING BLACK WATER

作　　者：丁擎[1] 袁林江[1] 赵丙良[1] 强琳[2] 董社英[3] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西西安710055 [2]宝鸡市环境监测站,陕西宝鸡721000 [3]西安建筑科技大学理学院,陕西西安710055

出　　处：《水处理技术》2011年第12期94-98,共5页Technology of Water Treatment

基　　金：教育部新世纪优秀人才支持计划(NCET-07-0659);教育部“长江学者与创新团队发展计划”创新团队(IPT0853)

摘　　要：以黑水为基质,采用单室质子膜-碳纸热压"二合一"型微生物燃料电池(SCMFC),考察了COD分别为200、300、500、800、1 000 mg.L-1黑水,外接电阻分别在80、200、600、1 000Ω下,温度为20℃和35℃时,SCMFC的产电和基质降解情况。结果表明,随着进水COD的增大,SCMFC功率密度提高,产电周期延长,出水COD去除率增大,电子回收率降低;COD为1 000 mg.L-1时,SCMFC的最大输出功率密度可达109 mW.m-2;外接电阻降低后,电流密度提高,产电周期缩短,出水COD去除率降低,电子回收率升高,底物利用率提高;20℃下最大输出功率密度为65 mW.m-2,较35℃时(106 mW.m-2)降低38.7%,说明提高SCMFC系统的温度对产电有利;高氨氮含量对SCMFC产电影响不大。SCMFC技术适合黑水的资源化处理。Electricity generation in a SCMFC fed with black water was investigated. Power output and utilization of substrates were monitored and analyzed on the following conditions： influent concentration （COD） at 200, 300, 500, 800 and 1 000 mg.L-1 of black water and circuit resistor at 800, 200, 600, and 1 000Ω, and also with two different temperatures （20 ℃, 35 ℃）. The results showed that the power density was promoted, the cycles of electricity generation was prolonged, COD removal efficiency was increased and CE was declined with increasing of substrate concentration. A maximum power density of 109 mW.m-1 was achieved at the black water concentration of 1 000 mg .L-1. Moreover, the circuit current density increased, the cycles of electricity generation was shortened, the effiuent COD removal mte became higher, and the CE ofMFC system was improved when resistance decreased. This indicated that the utilization efficiency of substrates was increased. In addition, the maximum power density was 65 mW .m-2 with the temperature condition at 20℃, which is 38.7% lower than that at the situation of 35 ℃ （106 mW,m-2）. Otherwise the high concentration of ammonium did not affect the power output. This illustrated that the technology of MFCs were suitable for the treatment of black water.

关 键 词：单极室微生物燃料电池 黑水 外电阻 温度 

分 类 号：X799.3[环境科学与工程—环境工程]