The invention belongs to the field of
sewage treatment, and particularly relates to an
electroplating sewage treatment device which comprises a shell, wherein the shell is internally provided with a water purification cavity, a filtering cavity and a freezing cavity, a water purification mechanism is arranged in the water purification cavity, a water inlet
pipe penetrating through the inner wall of the freezing cavity is fixedly arranged on the side, which is away from the filtering cavity, of the freezing cavity, a filtering mechanism used for filtering particle impurities and
metal ions is arranged in the filtering cavity, an oil removing mechanism is arranged between the freezing cavity and the filtering cavity, the space, which is close to the water inlet
pipe side, of the oil removing mechanism is the freezing cavity, the space, which is away from the water inlet
pipe side, of the oil removing mechanism is the filtering cavity, the water purification cavity is farther from the water inlet pipe than the filtering cavity and the freezing cavity, an activity
recovery mechanism is arranged on the inner wall, which is away from the water inlet pipe, of the water purification cavity, and
metal ions are finely filtered through multiple
layers of
ion exchange membranes, so that the use of chemical reagents can be reduced, and
pollution of reaction substances is avoided.