Water circulation system for aquaculture

The utility model discloses a water circulation system for aquaculture. The water circulation system comprises an aquaculture pond, a filtration pool, a disinfection pool, an oxygenation pool and an oxygen generation device. An algae purification pool is arranged outside the aquaculture pond in an encircling mode. A separation filter net is installed between the aquaculture pond and the algae purification pool. The filtration pool is communicated with the algae purification pool through a first pipe. The disinfection pool is communicated with the filtration pool through a second pipe. The oxygenation pool is communicated with the disinfection pool through a third pipe. The oxygenation pool is communicated with the aquaculture pond through a circulating water pipe, and a water pump is installed on the circulating water pipe. A plurality of ultraviolet sterilizers are arranged in the disinfection pool. The oxygen generation device is communicated with the bottom of an inner cavity of the oxygenation pool through an oxygen delivery pipe. The water circulation system can perform a series of treatment on water in the aquaculture pond, so that the water becomes clean and fresh in water quality; accordingly, as the water circulation system is used for circulation in the aquaculture pond, so that the water does not need to be replaced, discharge of contaminated water is reduced, and energy conservation and emission reduction are facilitated.