Abstract
The painting waste water from a factory which had high concentrated zinc and nickel within it, was selected as a sample for foam separation treatment. In addition, model waste water contained zinc, nickel, magnesium, manganese and calcium was prepared like as the actual waste water. Then removing those ions from both model waste water were being studied by Foam Separation.
The three kinds of chelating reagents, DMDTC, DEDTC and SPDC were examined if they were effective as collectors for zinc or nickel from the model waste water and the actual waste water. F-W type mineral flotation machine was used as the Foam Separation apparatus.
Nickel and zinc could be removed selectively by DMDTC and DEDTC from both waste water, nickel and zinc could be removed from both waste water at the same time by SPDC.
