How to realize ecological self-purification and win-win economic and ecological benefits in conventional fish farming?

As an ecological self-purification culture area, an aerator with power of 4.5 kW can be automatically turned on every 15 mu of water surface, and an automatic bait feeder with power of 180 watt is equipped every 15 ~ 22.5 mu of water surface. Tangkou No.2, with an area of 35 mu, is used as a wetland purification area, equipped with two 4.5 kW aerators that can be started automatically. The bottom of the pool was transformed into a slope, and the depth of the pool was1~ 4m. The silt at the bottom of the pond was removed in the No.2 pond. In order to reduce the accumulation of silt at the bottom of the pond, concrete slope protection is adopted around the mouth of the pond. The bottom sewage system includes a sewage outlet at the entrance of the aquaculture pond, a solid-liquid separation pond, a secondary sedimentation pond, a tertiary sedimentation pond and an electrochemical clean water pond.