At 1.00, 1.17, 1.40, 1.75 and 2.33 of VCR of model wastewater 100mg/L, concentration and condutivity 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 100mg/L to 180.9mg/L and permeate water was from 8.3mg/L to 9.4mg/L and rejection ratio was from 91.7% to 93.2 %. Conductivity of concentrated water was from 102.l㎲/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%.