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�M��x�Ӹ��x��̎��像Uˮ��о�,��Ӱ��pH��C_A��C_Me(Ħ��),��x�ӏ��,��x�r�g��ͨ��M��ˌ��о��Y��x�ӷ��x�x��f�p��飺Cd²⁺>Zn²⁺>Fe²⁺ >Cu²⁺>Ni²⁺,��C_A��CMe��2.5��3��1,��pH��8.5��9��x�ӏ��Ȳ��0.0001 mol/L�r,��x�Ӹ��x��k,��\��~,��懵Ƚ��x�Ӿ��кܸߵ�ȥ��,��Cd²⁺,��Zn²⁺��Fe ²⁺,��Ni ²⁺,��Cu²⁺��ͷքe��_0.05��0.20,��0.22,��0.28��0.33 mg/L��̎��像Uˮ��Ⱦ��Ⱦ��_��ŷŘ˜�,��ĭ�aƷ��k,��\��~,��Ʒλ�քe�_��3.2��,��9.3%��18.1%��13.2%,��ИO�ߵ��YԴ��Ճrֵ,��

Ӣ��ժҪ:

In this study, ion flotation method was used to dispose the electroplating wastewater. The effects of pH value, the ratio of C_A��C_Me,ion strength, flotation time, volume of aeration on the treatment of the electroplating wastewater were studied. Experimental results showed that the decreasing order to separate the ions was Cd²⁺>Zn²⁺>Fe²⁺>Cu²⁺>Ni²⁺. The preferential segregation for the cadmium, zinc, copper, nickel was that the ratio of C_A��C_Me was 2.5��3.1, pH value was 8.5��9, and the ion strength was less than 0.0001 mol/L. In this case, the residual concentrations of the Cd²⁺, Zn²⁺, Fe²⁺, Ni²⁺ and Cu²⁺ were 0.05, 0.20, 0.22,0.28 and 0.33 mg/L, respectively. After electroplating wastewater were disposed, the pollutant concentration complied with the discharge standard. The concentrations of the chromium, copper and nickel in the disposal froth product were 3.2��,9.3%,18.1% and 13.2%, respectively, which showed that there was a great reclamation value.

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