Electrokinetic Remediation Experimental Study of Heavy Metal Contaminated Soil

Abstract:

Electrokinetic remediation capability was researched by selfdesigned device.The interval power breaking method and voltage improving method were used to increase removal efficiency of single iron contaminated soil,and soil contaminated by three ions recovery through electrokinetic remediation was also done.The result shows that Cd removal efficiency of interval power breaking and voltage improving are respectively 6.17% and 0.56% higher than that of common experiment,and power consumption are 51.86% and 12.4% less.Removal efficiency of Cu,Pb and Cd are 68.56%,75.31% and 69.90%,respectively,which are lower than that of the same single iron,and power consumption are 5.0612 kJ·g-1,which is more than that of the same single one.

Key words:heavy metal contamination; electrokinetic remediation; removal efficiency; power consumption