Treatment for acid mine drainage

Details Treatment for acid mine drainage Treatment for acid mine drainage

1996-03-11

1997-12-16

Hruskoci, Peter A.

Liquid purification or separation

Processes

Using magnetic force

210716, 210724, 210726, 210748, 210912, 205742, 205771, C02F 1461

Patent

active

056981074

ABSTRACT:
An apparatus and method for removing contaminating metal ions and sulfate ions from acidic aqueous solution such as waste mine water which features passing the solution between pairs of electrodes, each pair of electrodes impressed with a voltage selected according to specific ion species and then adding chemical agents to raise the pH and form precipitates of the metal and sulfate ions. The precipitate is then separated from the water with settling and filtering steps. Application of a magnetic field is applied during at least the first mixing step.

REFERENCES:
patent: 3511777 (1970-05-01), Spinola
patent: 4014766 (1977-03-01), Watanabe
patent: 4169035 (1979-09-01), Stummer et al.
patent: 4176057 (1979-11-01), Wheatley et al.
patent: 4695378 (1987-09-01), Ackman
patent: 5401420 (1995-03-01), Siefert et al.
patent: 5423962 (1995-06-01), Herbst
patent: 5427691 (1995-06-01), Kuyucak et al.
patent: 5443719 (1995-08-01), Johnson et al.

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