Electrical float device for treating sewage

The utility model discloses a waste water treatment device by using an electric floating method. An electric floating reactor is composed of a plurality of tubular reaction units. Each tubular reaction unit is composed of a cathode stick (5), a short pipe (6), an insulated pipe sheath (7), an anode external pipe (8) and an insulated peg, the anode external pipe (8) and the cathode stick (5) are arranged on the same axle, the circular clearance between two poles forms a waste water channel, the short pipe (6) attached on the other end of the cathode stick (5) form a cathode together with the cathode stick (5), a plurality of reaction units in serial connection are arranged in the body (1) horizontally, the units are connected by a metal busbar (10), thus solving problems that the water collection ratio of the prior waste water treatment equipment is small, the transmission condition is bad, the electric current distribution is uneven, the energy consumption is high and the treatment capacity for unit cubage is low. The device has the advantages of simple structure, higher transmission quality, shorter treatment time and higher waste water treatment efficiency, and is widely used in the treatment of industrial waste water, industrial circulation cooling water and living water.