Electrokinetic remediation is a new remediation technology [26], which is mainly applying voltage at
the two sides of soil and then forming electric field gradient. The pollutant was carried to two poles
treatment room via electro migration, electro osmotic flow or electro phoresis and then treated further [27, 28].
It is suitable for low permeable soil, and has advantages of easily install and operate, low cost [29, 30] and
not destroy the original nature environment [31-33], so can achieve the environmental remediation and
protect the original ecotope [34]. However, the direct electrokinetic remediation can not control the pH
value of soil system well, and the treatment efficiency was almost low.