新型三维电极生物膜反应器启动特性

Start-up performance of a new type three-dimensional electrode biofilm reactor

为提高三维电极生物膜工艺(3DEBR)脱氮效率,通过改变反应器内部电极布置形式和极板间距,探讨了新型结构反应器启动运行和反硝化脱氮特性。结果表明,新型结构反应器挂膜迅速,启动快,脱氮效果更高,TN和NO-3-N的去除率稳定在94.87%和99%左右;且具有较强的缓冲p H值能力;在一定程度上抑制了NO-2-N、NH+4-N的积累以及高电流条件下碳棒的电解。新型结构的反应器能在高电流条件下获得较高的脱氮效率和稳定的出水水质。

In order to improve the denitrification efficiency of the three-dimensional electrode biofilm reactor( 3DEBR),the denitrification characteristics of start-up performance were analyzed by changing the arrangement of spatial location and distance of electrodes and electrode. The new reactor started fast,achieved higher nitrogen removal and maintained stable performance( TN / NO-3-N: 94. 87% /99%). Meanwhile,the new one had a strong ability to buffer p H values,inhibited the NO-2-N / NH+4-N accumulation and alleviated the carbon electrolysis under high current intensity conditions. In conclusion,the new reactor can obtain a high denitrification efficiency and stable effluent quality under high current conditions.