塑料板电极和钢管电极电渗试验性能对比研究

Study on Performance of Plastic Plate Electrode and Steel Tube Electrode in Electro-osmosis Experimental

为探究塑料板电极和钢管电极电渗性能的差异,通过塑料板电极和钢管电极的电渗对比试验,从电流,排水,含水量,系统稳定性与电腐蚀,沉降,能耗六方面分析了两种电极的电渗效果。结果表明:70 V电压下,20 h内钢管电极的平均电流大于塑料板电极,排水量为塑料板电极的2.19倍,终含水量比塑料板电极低9.47%, 12h内即排出大部分自由水,完成大部分沉降,但电渗系统稳定性不如塑料板电极,易出现导线烧坏情况,16h后钢管电极的能耗系数急剧增加,造成电渗极不经济;塑料板电极电渗排水能力不如钢管电极,但其具有系统稳定性高,能耗低,达到能耗转折点时间长的优势。研究还发现温度对电渗电流有较大的影响,且对电流的影响存在临界值,只有温度超过临界值时,才能促进电流的增长。

In order to explore the different performance between plastic plate electrode and steel tube electrode in electro- osmosis experiment, through the contrast experiment between plastic plate electrode and steel tube electrode, analysing the electro-osmosis effect of two kinds of electrode from six aspects of the current, volume of displacement, moisture, corrosion, settlement, energy consumption. The results show that, under 70 V voltage, the average current of steel tube electrode is larger than plastic plate electrode in 20 h, the drainage capacity is 2.19 times than plastic plate electrode, the final moisture content was 9.47% low er than plastic plate electrode, it removes m ost of the free water in 12 h, and completes m ost of the settlement, but the system stability is not as good as plastic plate electrode, and prone to wire burned, the coefficient of energy consximption of steel tube electrode increases sharply after 16 h, causing electro-osmosis is not economical;plastic plate electrode electro-osmotic drainage ability is worse than steel tube electrode, but it also has advantages of high stability, low energy consximption. This study alsofoxind that temperature has a great influence on current, but the effect on the current has a critical value, only when the temperature exceeds the critical value, can promote the growth of current.