【摘要】 考察了三维生物膜电极反应器(three-dimensional biofilm electrode reactor,3D-BER)在阳极区和阴极区分别接种硝化菌和氢自养反硝化菌后,电流强度的变化对处理含氮污水性能的影响.在水力停留时间为12h,进水氨氮浓度为30mg/L,DO调节在6mg/L,pH为7.0,将电流强度分别调至20,40,60,80mA,研究反应器的脱氮效果.结果表明:随电流强度的增大,NH4+-N的去除率呈现先升高后降低的趋势.当电流强度为40mA时,氨氮的去除率达到最高,为79.24%;电流强度升高至80 mA时,反应器对NH4+-N的去除率降为58.61%.更多还原

【Abstract】 This study investigated the effect of changes in current intensity on the performance of nitrogen-containing wastewater after inoculation of nitrifying bacteria and hydrogen autotrophic denitrifying bacteria in the anode and cathode regions of a three-dimensional biofilm electrode reactor.When the hydraulic retention time is 12 h,the influent ammonia nitrogen concentration is 30 mg/L,the DO is adjusted at 6 mg/L,and the pH is 7.0,the current intensity is adjusted to 20,40,60,80 mA,respectively.The experimental results show that with the increase of current intensity,the removal rate of ammonia nitrogen first increases and then decreases.When the current intensity is 40 mA,the removal effect of ammonia nitrogen is the best,which can reach 79.24%.When the current intensity is 80 mA,the removal rate of ammonia nitrogen in the reactor is reduced to 58.61%.更多还原