Study on using of ferromagnetic nano particles (CoFe₂O₄) and ferromagnetic nano –OH materials  evaluated the efficiency of plating wastewater treatment with initial parameters: pH = 5; Ni²⁺= 25 (mg/L), Cu²⁺= 25 (mg/L), Zn²⁺= 25 (mg/L). Research results showed that Ni²⁺, Cu²⁺, Zn²⁺ ions removal efficiency of Nano material are respectively 62,53%; 69,32% and 61,47% while the efficiency of Nano – OH material are 65,45%; 67,85% and 84,2%. This results showed that the new materials have potential in wastewater treatment.