粒子电极堆放方式对三维电极体系性能的影响研究

Investigation of the packing model of particle electrode on the efficiency of three-dimensional electrode reactor

通过对自制的粒子电极串进行实验,探讨了一种消除三维电极反应床中短路电流的新方法,并研究了不同粒子堆放方式对电催化效果的影响.结果表明,粒子本身长度的适当增长,使其与溶液电位差增大,废水脱色率也随之增大.采用B-β型粒子电极串在20V电压下反应60min,14mm长的粒子电极对直接湖蓝5B废水的脱色率可达到71.4%,比7mm长的粒子电极高出10%.另外,粒子电极串由于减少了短路电流,从而使废水脱色率高于常规填充床.采用B-β型粒子电极串在20V电压下反应30min,粒子电极串脱色率可达到66.9%,而使用等量的粒子电极在常规填充床中则只有45.3%的脱色率.

Based on homemade regular particle electrodes,a novel method for eliminating the short circuit current in three-dimensional reactor was proposed and the effect of the packing model of particle electrode on electrocatalysis was investigated.The results indicated that the potential difference between particle electrode and solution increased and the decolorization ratio for dye wastewater improved with the increase in the length of particle at an appropriate range.When decolorization was performed on 14 mm particle electrode in B-β packing model at 20 V for 60 min,the decolorization ratio for direst sky blue 5B wastewater was 71.4%,which was 10% higher than that on 7 mm particle electrode in B-β packing model in the same conditions.Furthermore,the decolorization ratio for wastewater was improved due to the elimination of short circuit current.The decolorization ratio reached 66.9% on particle electrode in B-β packing model at 20 V for 30 min,while only 45.3% of decolorization ratio was obtained from conventional packing reactor in the same amount.