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Water surface requirements for runway fish farming
Circulating water culture in running water tank and circulating water culture in pond. Combined with the concept of industrialized circulating water culture, the circulating water fish culture technology is integrated with the common pond culture technology, and the "open free-range culture" of the traditional pond is changed into "intensive captive culture", thus realizing the "flowing water" fish culture in the "still water" pond. Through mechanical wave-making and current-making, an annular water flow is formed in the whole pond, and the water flow flows through the water tank, so that aquatic products are fed in the "runway" in a centralized way, and the excrement is concentrated in a pool for unified treatment by using the water flow, thus playing a role in purifying the water quality of the pond.

Second, the runway fish farming system structure

1. Captive system: A nano-micropore oxygen-increasing and gas-pushing hydraulic device is installed in the water tank with brick-concrete structure to form a water flow with high dissolved oxygen and build a "captive area" for edible fish.

2. Waste collection system: A waste collection system is designed and installed at the tail of the water tank to solve the pollution of the culture itself and realize the purpose of low-carbon and high-efficiency culture.

3. Water purification system of peripheral pond: This system plants submerged or emergent plants, and raises aquatic animals such as silver carp, loach, snail, freshwater shrimp, prawn, Pelteobagrus fulvidraco, white sturgeon and Macrobrachium rosenbergii to purify the water body. The water surface of peripheral pond is equipped with air-lift water pushing facilities, so that the water body of the whole culture system forms a large cycle.

4. Intelligent management system of Internet of Things: collect information through various sensors to help find problems in time and accurately determine the location of problems. You can know the production situation of water products in the water tank without leaving home to look at the mobile phone or instrument, and you can find problems in time.