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14

2020

-

05

Anti-wind and wave aquaculture weapon-the development status of deep-water cages and problems to be solved urgently

金昶


In the recent past, typhoons "Maria", "Lingling" and "Lichma" have landed in my country one after another, causing fishermen and mariculture companies in the southeast coast to suffer disasters and causing serious economic losses.

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In the recent past, typhoons "Maria", "Lingling" and "Lichma" have landed in my country one after another, causing fishermen and mariculture companies in the southeast coast to suffer disasters and causing serious economic losses. Whenever a typhoon hits, a large number of coastal fishing rafts and non-standard net cages are destroyed, and debris is floating everywhere, which not only severely damages the local fishery economy, but also has a serious impact on the coastal ecological environment of our country.
In response to the impact of natural disasters such as typhoons, the domestic aquaculture industry has been exploring countermeasures. In the past 30 years, my country has vigorously developed deep-water cage technology, continuously increasing unit output and improving the quality of aquatic products, especially in terms of resisting typhoons and severe sea conditions. Shandong Ocean Shengjing Fishery Technology Co., Ltd. has invested heavily in research and development, greatly improving the wind and wave resistance of the deep sea anti-wind and wave cages from the design of the compartment and the design of new anchoring devices. The wind resistance capacity is 12 and the wave resistance is 5 meters.
 
Deep-water anti-wind and wave cage culture model
In 1973, my country's freshwater cage aquaculture was successful and promoted, and at the same time it gave birth to seawater cage aquaculture; in 1980, Guangdong Huiyang and Zhuhai opened the seawater cage aquaculture industry in my country, and it quickly spread to various coastal areas.
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Mode introduction
In relatively deep seas (usually more than 20 meters in depth), deep-water cage culture is carried out, which has strong resistance to wind, waves and currents. The structure of deep-water cages mainly consists of cage frames, breeding nets, mooring systems, and supporting facilities (underwater monitoring, automatic bait feeding, automatic fish collection, water quality monitoring, high-pressure net washing machinery, etc.).
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The deep-water anti-wind and wave cage culture model integrates multiple technologies such as computer control, new materials, anti-corrosion from seawater, anti-ultraviolet (anti-aging), and manufacturing of supporting machinery and equipment. Develop a modern and intelligent breeding model.
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Breeding weapon against wind and waves
Deep water cages refer to culture cages that can be used in deep and open seas (depth greater than 20 meters). Compared with traditional offshore cages, they have significant advantages such as environmental protection, durability, and resistance to wind and waves. In recent years, relevant state departments have formulated policies to restrict offshore cage aquaculture and support deep-sea aquaculture, encourage the expansion of aquaculture areas, reduce environmental pressure, and adjust the structure of marine aquaculture species.
Huang Liuyi, a professor in the Fisheries Department of the Fisheries College of Ocean University of China, said that deep-water cages have large water bodies and are closer to the natural environment, with a wide range of fish activities and high survival rates. In the deep water environment, fish grow faster, have fewer diseases, and their body shape and meat quality are closer to the wild state. The use of deep-water cage culture can not only reduce environmental pressure, but also improve the yield and quality of cultured species.
Towards the far-reaching sea, towards high-tech
According to industry insiders, in recent years, the technical performance of deep-water aquaculture cages has been continuously improved, and new materials, anti-corrosion, anti-fouling, anti-ultraviolet and other new technologies have been successively applied. The volume of cages is becoming larger and larger. New materials such as high-density polyethylene, light high-strength aluminum alloys and special stainless steel have greatly improved the overall strength of the cages and doubled the service life of the cages. With the development of computer integration and automatic control technology, the management of cage aquaculture has become more intelligent, which greatly reduces labor costs. In the long run, deepwater cages have the characteristics of safety, environmental protection, durability, and intelligent operation, which can reduce equipment losses, reduce labor costs, and increase corporate profits.
Typhoon-resistant deep-water aquaculture facilities have development potential that cannot be ignored. It is believed that with the improvement of technology, the application of new materials, and the support of related policies, deep-water cages will surely play an increasingly important role in the development of marine fisheries in the future.
Shandong Ocean Shengjing Fishery Technology Co., Ltd. takes the revitalization of China’s marine industry as its mission, and is guided by the national marine ranch strategy and market demand. It is a company that integrates manufacturing and R&D of cage aquaculture equipment, algae aquaculture machinery, bank protection and beach protection engineering facilities, and ocean views. A modern environmentally-friendly marine equipment new technology enterprise integrating landscape facilities.
The company's main products include reinforced HDPE anti-wind and wave large-scale net cages, HDPE round/square aquaculture cages, HDPE floating trestle, anti-wind and wave marine plastic tourism and leisure hotels, HDPE fishery ship docks, coastal garbage isolation and recycling platforms, marine leisure and entertainment platforms, and aquaculture Recreational fishing integrated cage platform, etc.
Information source and reference content: China Ocean News Jin Chang

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