At 1.00, 1.17, 1.40, 1.75 and 2.33 of VCR of model wastewater 100㎎ /L, concentration and conductivity of heavy metal ion in the concentrated solution and permeate water was measured by using ion Chromatography and Conductivity Meter. For example, concentration of Ni²^+ ion increased from 100㎎ /L to 180.9㎎ /L and permeate water was from 8.3㎎ /L to 9.4㎎ /L and rejection ratio was from 91.7% to 93.2 %. Conductivity of concentrated water was from 102.1㎲/cm to 271.0㎲/cm and permeate water was from 10.1㎲/cm to 10.88㎲/cm and rejection ratio was from 90.1% to 93.8%.