关键词: 空气污染指数, 空气污染指数, 气象因子, 相关系数, 预报方程, 庆阳

Abstract: The objective is to establish a scientific and reasonable range of key process parameters for circulating culture model in pond. The internal circulation amount of aquaculture system, the ratio of aquaculture tank area to pond area was designed scientifically based on the principle of material balance. And the influence of basic parameters such as fish excrement and bait collection rate was discussed. The results showed that the aquaculture density of fish reached 100 kg/m3 in the tank with the volume of 198 m3 (22 m×5 m× 1.8 m) and dissolved oxygen of 6 mg/L. When the collection rate of fish manure and residual bait was 30%, the circulation amount in the circulating culture mode in the pond was designed to be 664.78 m3/h (about water exchange once per 18 min), and the ratio of the tank area to the pond area was 1.03%-1.55%. When the collection rate of fish manure and residual bait was 60%, the circulation amount in the circulating culture mode in the pond was designed to be 584.26 m3/h (about water exchange once per 20 min), and the ratio of the tank area to the pond area was 1.18%-1.77%. It is necessary to set the best collection rate of fish excrement and bait in order to reduce the energy consumption. The design provides support for improving the technical performance of the model and promoting the development and widespread promotion of recirculating aquaculture technology in pond.