At present, in the feeding-based farming method, the nutrient-rich factors such as residual bait, feces, N and P are discharged into the water body, which makes the ammonia nitrogen, nitrite nitrogen, chemical oxygen demand and biochemical oxygen demand in the water body seriously exceed the standard, causing stress to cultured animals, increasing the disease incidence rate of cultured animals such as fish and shrimp, and reducing the yield. Therefore, improving aquaculture water environment is an urgent problem in aquaculture production.
Biofilm water purification fence technology is a special aquaculture product with low investment and operation cost, water saving and emission reduction, energy saving and environmental protection, low carbon safety, simple operation and easy popularization.