In this paper,the sulfide autotrophic denitrification fuel cell was set up and the two reaction processes was separated to study the effect of simultaneous denitrification and desul-furization and the capacity of electricity generation.The results show that simultaneous des-ulfurization in anode chamber and nitrate removal in cathode chamber is feasible.In this pa-per,the sulfide and nitrate removal loads were 0.36 kg·m-3·d-1and 0.07 kg·m-3·d-1,respectively.The maximum power density was 144.03 mW· m-3.Cathode chamber micro-organisms have a good ability to receive electrons.When the cathode chamber nitrate concen-tration is low,nitrate is easily reduced to nitrogen ;w hen the nitrate concentration is higher,the reaction products to nitrite mainly.The removal of the sulfide in the anode chamber and the performance of the fuel cell were less affected by the change of nitrate concentration in the cathode chamber.The external resistance mainly affects the removal of nitrate in the cathode chamber and has no effect on the removal of sulfide in the anode chamber.When the external resistance increases from 5 Ω to 2 000 Ω,the removal rate of nitrate decreases from 100％to 61.75％.Reducing the external resistance is helpful to improve the effect of nitro-gen removal in cathode of the M FC.%通过建立硫自养反硝化燃料电池,将硫自养反硝化的两个反应过程分开,研究同步脱氮除硫效果以及产电能力.实验结果表明,硫自养反硝化燃料电池阳极室除硫阴极室脱氮是可行的,在试验范围内,硫化物和硝酸盐去除负荷最大分别为0.36 kg·m-3·d-1和0.07 kg· m-3·d-1,其功率密度最大为144.03 mW·m-3.阴极室微生物具有较好的接收电子的能力,当阴极室硝酸盐浓度较低时,硝酸盐易被还原成氮气;当硝酸盐浓度较高时,反应产物以亚硝酸盐为主.阴极室中硝酸盐浓度的改变对阳极室硫化物的去除和燃料电池的产电性能影响较小.外电阻主要影响阴极室硝酸盐的去除而对阳极室中硫化物的去除基本无影响.当外电阻从5 Ω增加到2000 Ω 时,硝酸盐的去除率从100％降低至61.75％,降低外电阻有利于提高MFC阴极脱氮效果.
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