Recently, global per capita fish consumption has been setting new records, demonstrating the key role of fish in global food and nutrition security. A report by the Food and Agriculture Organization of the United Nations also shows that sustainable aquaculture development and effective fisheries management are critical to maintaining fish supplies.
Aquaculture and fisheries cannot be separated from aquaculture nets. Traditional aquaculture nets often encounter problems such as insufficient oxygen supply and bacterial infection caused by a large number of microorganisms attached to fishes. In order to maintain the health and steady growth of fish population, people begin to explore more possibilities for the material of aquaculture nets.
Copper alloy aquaculture mesh for fishing
By using the natural antibacterial property and corrosion resistance of copper ions, copper alloy aquaculture mesh avoids the growth of marine biological attachments in the aquaculture mesh, creating a cleaner and healthier environment for fish culture. It also greatly reduces the frequency of cleaning and replacing aquaculture mesh, thus reducing losses from predator attacks or fish escapes.
The traditional synthetic fiber aquaculture nets are immersed in seawater for a long time, and various microorganisms attach to the surface of the nets, causing net opening blockage and hindering the water exchange inside and outside the cages. If not cleaned up in time, fish will grow slowly and even catch diseases. At the same time, there are problems such as poor wind and wave resistance, small scale and short service life.
In contrast, the copper element in the copper alloy aquaculture mesh has antibacterial properties. It not only plays the role of sterilization, but also prevents the attachment of marine microorganisms. In addition, the copper alloy aquaculture mesh has a strong structure and its tensile strength can reach 600–800 N/mm2. As a result, it can adapt to different sea areas, resist extreme weather damages, and have a good volume retention rate and a long service life.
The main component of copper alloy aquaculture mesh is copper zinc alloy. It is composed of many twisted copper zinc alloy wires to enhance the stability of the mesh structure, and the wear resistance between the wire mesh joints. Trace elements of tin and nickel are added to our copper alloy aquaculture mesh. The tin element can significantly improve the corrosion resistance of the aquaculture mesh in seawater, and enhance the tensile strength of the aquaculture mesh. The nickel increases the recrystallization temperature, improves the mechanical properties and corrosion resistance of the wire mesh, and reduces the stress cracking tendency.
BD06 copper alloy aquaculture mesh
BD33 copper alloy aquaculture mesh
When being used for marine fishery aquaculture, we faced the problem of how to connect the two pieces of copper alloy aquaculture mesh together. After repeated trials, we developed a new type of metal mesh connection. In the process of producing copper alloy aquaculture mesh, we will twist the mesh edge, push it back and then hook to the adjacent two mesh edges, forming an interlocking structure. The straight wire inserted into each locking mesh opening, and then tighten the adjacent two hook mesh and straight wire with spiral wires.
The new connection method makes the copper alloy aquaculture mesh more solid and stable. It reduces the economic losses caused by mesh edge breakage, lowers the later manual maintenance costs and ensures the fishery production.
Copper alloy aquaculture mesh connection
In aquaculture, the introduction of copper alloy aquaculture mesh helps to promote the development of clean energy economy. It is durable and has an up to 10 years service life. Copper is a non-renewable resource, but the discarded copper alloy aquaculture mesh is 100% recyclable, so it complies with the ecological concept of green and environmental protection. It also has no impact on water quality and the environment.
Industrial Filtration & Separation