At present, the existing factory fish farming facilities and equipment in China are relatively simple, generally only including water lifting power equipment, air pump, sedimentation tank, gravity valveless filter tank, temperature regulating tank, fish farming workshop and open flow pipe valve. There is no strict water treatment facility before, and there is no waste water treatment equipment after, which is directly discharged into the sea. This is the primary stage of factory fish farming. In addition, due to the high breeding density, diseases occur from time to time. Therefore, it is necessary to promote the technology of seawater factory recirculating aquaculture, standardize the aquaculture model, strengthen scientific management, prevent the occurrence and spread of diseases, reduce or even do not use drugs, and solve the problems such as excessive drug residues in aquaculture products.

What is the current situation of China's circulating water aquaculture? Based on our comparative study of many domestic companies and enterprises, we can conclude that there are three main situations in the industry:

Piecemeal recirculating aquaculture system: It can not achieve the aquaculture effect of foreign systems by imitating foreign systems and equipment and piecemeal systems.

The process design is full of contradictions: because there is no systematic study on the basic theory of the circulating water filtration system, the water treatment process conflicts and inhibits each other, and the long-term stable work cannot be achieved, leading to the failure of aquaculture production.

The equipment performance is not up to standard: in order to reduce costs, the equipment is designed to steal work and materials are selected to reduce materials. The equipment cannot work stably in a highly corrosive environment, and failures occur frequently, leading to production failures and heavy losses.

In this state, the industry has failed repeatedly, which not only makes it difficult for enterprises to survive, but also makes the majority of farmers lose confidence in recirculating aquaculture.

The whole industry has been stagnant.

Solution (system introduction)

Adopting advanced circulating water treatment technology and concept, the self-developed efficient aquaculture system can save a lot of land and water resources, save food, reduce breeding costs, reduce environmental pollution, and achieve high efficiency, environmental protection, energy conservation and land conservation of aquaculture; It can effectively prevent the occurrence of breeding diseases, improve the survival rate of breeding varieties, and greatly improve the aquaculture yield of aquatic products. The ecological recycling and captive breeding mode mainly includes five necessary systems, namely, captive breeding, oxygenation, sewage discharge, circulating water, and wastewater treatment. The biggest core is centralized sewage discharge, which can timely and effectively collect fish metabolites and leftover feed, improve water quality, ensure a virtuous cycle of captive water, achieve zero discharge of aquaculture wastewater, and return to the captive breeding pool, providing a stable environment for fish and shrimp breeding, and solving the problems of traditional aquaculture water environment The frequent occurrence of diseases, low breeding efficiency, product safety and many other problems have enabled the sustainable development of aquaculture, helped the transformation and upgrading of traditional breeding models, and provided healthy and high-quality green aquatic products for consumers.

System advantages

1. Water saving of 95%: the water exchange volume of the system is less than 5%.

2. Zero pollution discharge: the sewage discharged from the system can be reused after centralized treatment to achieve zero pollution discharge in the real sense.

3. Ecological breeding: a reasonable biological filtration system without any antibiotics and hormones.

4. Energy saving 25%: Scientific design of water level difference driving mode saves 25% of electric energy compared with traditional factory farming.

5. Land saving 90%: 450m2 of land can produce 40-50 tons of fish, while the traditional breeding mode requires more than ten times more land to achieve this output.

6. Stereoscopic design: the double-layer three-dimensional structure not only saves land, but also reduces construction costs.

7. High efficiency and yield: 40-50 tons of fish can be produced on 450m2 of land.

8. Stability: The constant temperature workshop design is not subject to seasonal constraints and adverse weather, and the output is stable throughout the year.

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