The invention relates to the technical field of
wastewater treatment, and discloses an electric
flocculation device, which comprises a
machine shell, an upper contact is fixedly installed on the upper surface in the
machine shell, a lower contact is fixedly installed on the lower surface in the
machine shell, an
anode plate located below the upper contact is movably connected into the machine shell in a sleeved mode, a
cathode plate located above the lower contact is movably connected into the machine shell in a sleeved mode, connecting rings are fixedly installed on the two sides of an
anode plate and the two sides of the
cathode plate, and an outer bent plate is movably installed at the bottom of the
anode plate. According to the electric
flocculation device, after bubbles adhere to the periphery of a conductive rod, the
water pressure borne by an outer sleeve is reduced at the moment, the outer sleeve moves downwards, the lower end of a gas channel is exposed in the bubbles, the outer portions of the bubbles enter the upper portion of an inner bent plate under the action of the
water pressure at the moment, a conductive rod is always exposed in
wastewater, and a maximum
electrolysis area is kept, therefore, in the electric
flocculation process, the flocculation speed is not influenced by water
electrolysis.