Spirulina sewage purification device used for tropical coastal eutrophic saltwater lakes

The invention discloses a spirulina sewage purification device used for tropical coastal eutrophic saltwater lakes and relates to the technical field of water pollution control. The device comprises amain shaft, a frame surrounds the circumferential direction of the main shaft, the frame includes an outer frame body and an inner frame body, a clamp groove is connected between the outer frame bodyand the inner frame body, a floating ball is clamped in the clamp groove, at least two support rods are connected between the outer frame body and the main shaft, and a first aquaculture grid used for cultivating water purification plants is arranged between the adjacent support rods. The eutrophication problem of the tropical coastal saltwater lakes is mainly solved through the water body bioremediation technology. The device has a simple structure, is light, and has good wind wave resistance and corrosion resistance. Domesticated spirulina is selected as the water purification plants withhigh water purification effi