Device and method for collecting and catching blue-green algae

The invention relates to the technical field of water treatment, and discloses a blue-green algae collecting and catching device and method.The device comprises a basin floating on the water surface, a buoyancy assembly used for controlling the submerging depth of the basin is arranged at the bottom of the basin and comprises an inflatable air bag, and an absorption assembly used for adsorbing blue-green algae on the water surface and a submersible sewage pump are further installed on the basin; the pot body is further provided with a monitoring assembly used for monitoring the flow of blue-green algae sucked in multiple positions in the adsorption ring in unit time and an adsorption assembly used for further purifying the water surface after the blue-green algae are absorbed by the adsorption ring, and the adsorption assembly comprises a plurality of rotatable activated carbon adsorption discs; and the throwing cylinder is mounted on one side of the activated carbon adsorption disc. Compared with the prior a