Algae-water separation device

The algae-water separation device comprises a separation box which is of a hollow structure and comprises a water outlet formed in the first surface of the separation box; the drum comprises a filter cartridge, the cartridge surface is a net body, and the filter cartridge is rotatably arranged in the separation box; the first water inlet is formed in the filter cartridge and is communicated with the second surface of the separation box; the driving assembly is arranged on the first surface of the separation box, and the output end is in transmission connection with the first surface of the filter cartridge; the plurality of filter plates are net bodies and are annularly arranged on the inner wall of the filter cylinder; the collecting tank penetrates through the first water inlet, the part, located in the filter cartridge, of the collecting tank is provided with an upward opening, and the section of the collecting tank is U-shaped. In the rotating process of the filter plate, algae suspended in the algae wate