生物阴极型微生物燃料电池处理氨氮有机废水及产电性能的研究  

Treatment of organic wasterwater containing ammonia nitrogen and electricity generation using a bio-cathode microbial fuel cell

作　　者：李英[1] 金春姬[1] 杨远乐 刘明[1] 鲁静[1] 魏铭泽 

机构地区：[1]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《环境污染与防治》2017年第1期70-76,81,共8页Environmental Pollution & Control

基　　金：山东省自然科学基金资助项目(No.ZR2011BM014)

摘　　要：将生物阴极型微生物燃料电池(BCMFC)阳极室的出水引进阴极,同时阴极采用间歇曝气的方式运行,以人工模拟的氨氮有机废水作为处理对象,探究外接电阻、DO、水力停留时间(HRT)以及碳氮质量比(C/N)对BCMFC的氨氮和有机物(以COD表征)去除效果以及产电性能的影响。结果表明:(1)开路以及50、100、500、1 000Ω条件下,最后出水中氨氮去除率分别为95.33%、86.12%、67.68%、100.00%、99.39%。外接电阻变化对COD的降解无太大的影响。500Ω条件下产电性能最佳。(2)DO为0.2、2.0、3.0、4.0、5.0、7.0mg/L条件下,最后出水中氨氮去除率分别为48.55%、56.56%、84.40%、93.25%、95.76%、97.01%,COD去除率分别为68%、96%、99%、99%、99%、99%。DO会影响整个电池的产电功率。DO设为4.0~5.0 mg/L较合适。(3)C/N为8.3∶1.0、12.5∶1.0、25.0∶1.0、50.0∶1.0条件下,最后出水中氨氮去除率分别为74.68%、73.86%、94.07%、100.00%。C/N对COD的去除没有太大的影响。C/N为25.0∶1.0条件下最大产电功率密度最大。(4)HRT为8、10、13、20、24h条件下,最后出水的氨氮去除率分别为67.67%、79.01%、86.70%、92.72%、96.80%,COD去除率分别为96%、98%、98%、100%、100%。随着HRT的缩短,最大产电功率密度先增大后减小。HRT为20h时BCMFC性能较好。BCMFC was constructed in this paper,the anode chamber effluent was into the cathode and cathodic operation was intermittent aeration. Taking organic wastewater with ammonia nitrogen as target pollutant,influence of external resistance, DO,hydraulic retention time （HRT） and carbon nitrogen ratio （C/N） were discussed on the removal rate of organic wastewater with ammonia nitrogen and the electricity generation in the BCMFC. The experimental results showed that： （1） when the conditions was open circuit and 50,100,500,1 000 Ω,the removal rate of ammonia nitrogen in the final water was 95.33 %, 86.12 %, 67.68 %, 100.00 %, 99.39 %. The change of external resistance had no great influence on the degradation of COD. The best electricity generation performance was 500 Ω. （2） When DO was 0.2,2.0,3.0,4.0,5.0,7.0 mg/L,the removal rate of ammonia nitrogen were 48.55% ,56.56% ,84.40 %, 93.25% ,95.76% ,97.01% ,the removal rate of COD were 68%,96%, 99%,99%, 99%,99%. DO would affect the whole battery power generation. DO of 4.0-5.0 mg/L was more appropriate. （3） When C/N was 8.3 ： 1.0,12.5 ： 1.0, 25.0： 1.0,50.0 ： 1.0,the removal rate of ammonia nitrogen in the final effluent was 74.680/00,73.86%,94.07%, 100.00%. C/N had no significant effect on removaling COD. When C/N was 25.0 - 1.0,the maximum power density was the best. （4） When HRT was 8,10,13,20 and 24 h, the removal rate of ammonia nitrogen in the final effluent was 67.67%,79.01%,86.70%,92.72%,96.80%. And COD removal rate was 96%,98%,98%,100%,100%. With the shortening of HRT,the current density maximum power density was firstly increased and then decreased. When HRT was 20 h,the performance of BCMFC was better.

关 键 词：生物阴极型微生物燃料电池 氨氮有机废水 氨氮 COD 产电功率密度 

分 类 号：X703[环境科学与工程—环境工程]