The invention relates to the technical field of production
sewage treatment. The invention further discloses a device for treating production
sewage by iron
ion flocculation activity. The device comprises a reaction box, a placement groove is fixedly connected into the reaction box, a
decomposition shell is fixedly connected to the side, away from the reaction box, of the placement groove, a feeding
pipe is fixedly connected to the top of the
decomposition shell, a gear is movably connected to the top end of the feeding
pipe, a spring rod is movably connected to the surface of the gear, and amagnetic ring is movably connected to the end, away from the gear, of the spring rod. The magnetic ring produces a pushed force in the direction far away from the
decomposition shell under the actionof an
electric field, if a
chemical reaction in the decomposition shell cannot be performed when the surfaces of the
scrap iron and the
charcoal are passivated and hardened, a rear spring rod extrudesa buffer layer, the buffer layer pushes a main meshing wheel to rotate under clamping of a guide wheel, then extends to contact with the surfaces of the
scrap iron and
charcoal, and then scrapes offthe surfaces, contacting with
sewage, of the
scrap iron and
charcoal, so that the effect of eliminating the
raw material surface
passivation and hardening phenomenon without replacing materials is achieved.