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��r�g��2014-07-16 10:44 ��Դ��h(hu��n)��̌W(xu��)��(b��o) ��: ��x��2517

��ժҪ:

�M(j��n)��x�Ӹ��x��̎��像Uˮ��о��Ӱ��pH,��C_A��C_Me(Ħ��),��x�ӏ�(qi��ng)�ȡ��x�r�g��ͨ��M(j��n)��ˌ�(sh��)�(y��n)�о�,��(sh��)�(y��n)�Y(ji��)��x�ӷ��x�x��f�p��?y��n)飺Cd²⁺>Zn²⁺>Fe²⁺ >Cu²⁺>Ni²⁺,��(d��ng)C_A��CMe��2.5��3��1��pH��8.5��9,��x�ӏ�(qi��ng)�Ȳ��0.0001 mol/L�r,��x�Ӹ��x��k��\,��~,��懵Ƚ��x�Ӿ��кܸߵ�ȥ��ʣ�Cd²⁺,��Zn²⁺,��Fe ²⁺��Ni ²⁺,��Cu²⁺��ͷքe��_(d��)0.05,��0.20��0.22,��0.28��0.33 mg/L��̎��像Uˮ��Ⱦ��Ⱦ��_(d��)��ŷŘ�(bi��o)��(zh��n),��ĭ�a(ch��n)Ʒ��k,��\��~,��Ʒλ�քe�_(d��)��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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