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��r(sh��)�g��2014-07-16 10:47 ��Դ��h(hu��n)��̌W(xu��)��(b��o) ��: ��x��2604

��ժҪ:

��FeSO₄��PAC��ȥ��͝��像Uˮ�е�Cu²⁺,��Ͷ��,��ҺpHֵ��ٶȺ͕r(sh��)�g��Ӱ��,��Y(ji��)��,��ڸ��їl��£�PAC��FeSO₄��Cu2+��ȥ��_(d��)��99.37%��99.20��,��_(d��)��ˮ�C��ŷŘ�(bi��o)��(zh��n)��(GB 8978-1996)��һ��ŷŘ�(bi��o)��(zh��n),��ͨ�^��FeSO₄��PAC��NaOH 3�Nˎ��ľC�Ϸ��ͱ��^,��l(f��)�F(xi��n)FeSO₄��̎��͝��像Uˮ�е��~��PAC��,��NaOH��Σ��a(ch��n)��,��I(y��)��(y��ng)��ԏ�(qi��ng)��ȥ��ʸ�,��

Ӣ��ժҪ:

The ferric sulphate and PAC as flocculants were used to remove Cu²⁺ from the low concentration electroplating wastewater. The factors such as the contents of flocculants, pH of solution and so on were mainly and respectively observed. The experimental results show that under the optimum conditions of flocculation reaction with PAC and FeSO₄,the removal rate of Cu²⁺ can reach 99.37% and 99.20% respectively which can meet the first level discharge standard of “Integrated Wastewater Discharge Standard”(GB 8978-1996). Moreover, by comparison of FeSO₄, PAC and NaOH, it can be concluded that Fe²⁺ flocculation has better performance in operation, less sludge amounts and more practical industrial application than PAC flocculation and NaOH chemical precipitation, and it has higher removal rate in treating copper (��) of low concentration industrial wastewater.

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