In recent years, Quang Ninh province has been working with provincial enterprises to support people in raising oysters based on modern models, sustainably developing the value of Pacific oysters. The most prominent is the transfer of the traditional oyster farming model to the method of using plastic buoys to raise oysters. Specifically, HDPE buoys with outstanding durability and extremely environmentally friendly.
Learn about HDPE plastic buoys for raising oysters?
HDPE stands for High Density Poly Etilen. HDPE plastic buoys for raising oysters are produced using blowing technology from special HDPE plastic beads. This type of plastic is only for people raising aquatic products. Accordingly, the buoys are connected to each other by ropes about 3m apart and float on the water surface.
The oyster seeds will be attached to the ropes attached to the ropes 30cm apart and dropped into the sea water. Plastic oyster buoys come in many different sizes, depending on the desired load-bearing capacity of the buoy.
Advantages of plastic buoys for Pacific oyster farming
Plastic oyster buoys are made from special plastic for the aquaculture environment, meeting certain standards. Therefore, floating buoy products always ensure outstanding advantages such as:
Environmentally friendly, high durability
HDPE plastic material is environmentally friendly, does not corrode over time, so it will not affect the environment. In particular, it does not create waste for the marine environment like many spontaneous methods of people such as: oyster farming with tires, foam buoys…
In addition, HDPE plastic is a super durable plastic with high plastic density, they often have a durability of 10 years or more. Plastic buoys have many designs and colors. Depending on the needs of the units, oyster farming facilities, the color of the plastic buoy can change.
Withstand high impact and anti-cracking and breaking ability
HDPE plastic material is super durable, can withstand strong impacts from the outside. When hanging mollusks with a floating buoy system, the mollusk system can withstand strong winds of level 8 – 9.
HDPE plastic floating buoys are completely different from traditional foam and plastic buoys because they are not chemically corroded and are not adversely affected by ultraviolet rays. Many buoy manufacturers have long-term warranty policies for people, from 3 – 5 years.
Easy to transport, easy to install
HDPE floating buoys for oyster farming inherit the superior properties of the material, in addition, the transportation and installation of the buoys are also extremely easy to perform. The process of transporting the buoys is less likely to be dented.
This is the reason why the Department of Agriculture and Rural Development of Quang Ninh province uses floating buoys at sea to implement the plan to eliminate foam buoys and develop a sustainable marine economy.
Compare the features of HDPE plastic buoys with foam buoys
You can re-evaluate the advantages of HDPE plastic buoys for oyster farming through the comparison table below:
| Criteria | HDPE plastic float | Foam float |
| Lifespan (years) | 7-10 | 1.5- 2 |
| Number of buoys/1 line 250m | 70 | 110 |
| Buoyancy below the water’s edge (kg) | 66 | 30 |
| Buoyancy below the water’s edge 0.5m (kg) | 160 | 75 |
| Environmental protection | No harm | Harmful |
| Impact resistant (bad weather, big waves) | No | |
| Abrasion-resistant | Yes | No |
| Heat resistant | Yes | No |
| Yes editable | Yes | No |
| Yes replaceable | Yes | No |
Currently, to save initial costs, there are still many households raising Planting choose to use foam buoys. However, foam buoys have a very big disadvantage, which is that after a period of use, the buoys will be broken into pieces by waves and gradually corrode, causing environmental pollution.
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With plastic floats, this is completely solved. In addition, the repair and Replacing the plastic float is completely feasible. In case the plastic buoy is punctured or dented, the farmer can remove it for repair and replacement easily.
Moreover, because the lifespan of plastic buoys is 4-6 times higher than that of Foam. In the long run, plastic buoys will save a lot of money because there is no need to spend on labor to replace or buy new ones. With outstanding advantages compared to foam buoys, choosing plastic buoys for the process oyster farming as a replacement is inevitable.
Things to note when using HDPE floating buoys
To optimize costs and minimize risks when applying the oyster farming model using HDPE floating buoys, farmers need to pay attention to the following issues following topic:
- Carefully calculate the load capacity when the oysters are large so that the buoys do not sink.
- Avoid ships and boats crashing into the oyster farming system
- Use soft material straps
Using plastic oyster buoys HDPE is inevitable trend for marine farming. Ensuring sustainable development, friendly to the environment. This will also help increase the value of milk oysters in Van Don – Quang Ninh, which is considered the capital of oysters. Currently, in Quang Ninh province, the conversion between models is still continuing and developing widely. Hopefully, in the future, not only Quang Ninh but also other oyster farming areas in Vietnam will also will successfully apply this model.
