Efficient treatment and sludge concentration device for fracturing flow-back fluid

The invention provides an efficient treatment and sludge concentration device for fracturing flow-back fluid, comprising: an electric flocculator, the electric flocculator comprising a plurality of flocculation tubes arranged side by side and connected in series, U-shaped joints connected between adjacent flocculation tubes, and a power supply for supplying power to the flocculation tubes; the settling cylinder is used for separating oil, water and mud in the fracturing flow-back fluid; the cyclone pipe is connected with the outlet end of the electric flocculator and extends into the settling cylinder along the tangential direction of the cross section of the settling cylinder. According to the device, the electric flocculator and the settling cylinder are arranged, the electric flocculator is used for demulsifying the seriously emulsified fracturing flow-back fluid, and oil drops, suspended impurities and solid phase impurities in the fracturing flow-back fluid are flocculated into floccules, so that the set