Zn-Ni Alloy Planting is consist of pre-treatment process, planting process, inspection process. As a long term using Alloy Planting solution, the carbonate is formed as product of hydration. it is loss of Planting efficiency, recovery of alloy planting and reusing. Therefore, For the purpose of removing the carbonate sludge, Synthesis Process develop a cooling system and a solid-liquid separation process. As a consequence of experiments, the recovery efficiency is an increase of 40% over established.