Comparative study on the bio-electrochemical denitrification equipped with a multi-electrode system.
Comparative study on the bio-electrochemical denitrification equipped with a multi-electrode system.
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DOI：
10.2166/wst.2005.0726
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
M. Prosnianský;T. Watanabe;M. Kuroda
中科院分区：
文献类型：
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作者：
M. Prosnianský;T. Watanabe;M. Kuroda
应用三个具有多个阴极的生物膜电极反应器（BER）来研究实验室规模条件下电极配置和流动方向对反硝化的影响。由于反应器中电极位置不同，硝酸盐、DO 和 pH 值的分布在所应用的 BER 之间存在差异，从而导致性能差异。带有下游阳极的电极的流通式配置似乎是最合适的配置，因为亚硝酸盐仅在本实验中没有在流出物中积累，并且低电流密度下的电流反硝化效率很高。因此，建议低负载运行。
Three biofilm-electrode reactors (BERs) with multiple cathodes were applied to investigate the effect of electrode configuration and flow direction on denitrification under laboratory-scale conditions. The distribution of nitrate, DO and pH varied among applied BERs, as a consequence of a different electrode position in the reactors, bringing about a difference in the performance. Flow-through configuration of electrodes with a downstream anode appears to be the most suitable configuration since nitrite did not accumulate in the effluent only in this experiment and the current-denitrification efficiency at low current densities was high. Thus, it is recommended for a low-loading operation.