Application of HPDE geomembrane in aquaculture

u Definition

HPDE geomembrane, the full name of high-density polyethylene geomembrane, referred to as impermeable film. It is made of more than 97% polyethylene resin and 2%-3% carbon black ratio. The main raw material of high density polyethylene is a non-polar thermoplastic resin made of ethylene copolymerization. The original high density polyethylene is milky in appearance and translucent to a certain extent in thin section.

u The following is the composition table of HDPE geomembrane:

u Characteristics and advantages of HPDE geomembrane

HDPE geomembrane,  is a new waterproof material made of high quality polyethylene resin by blow molding process.

It has the following features and advantages:

1. High strength and durability:

 HDPE geomembrane has high fracture strength and elongation, and can withstand large external forces and deformation to ensure stability during long-term use. At the same time, its aging resistance is excellent, can effectively resist ultraviolet radiation, extend the service life.

2. Excellent impermeability:

 The surface of HDPE geomembrane is smooth and has good impermeability, which can effectively prevent the leakage of aquaculture water bodies such as fish ponds and shrimp ponds and maintain the stability of water bodies.

3. Corrosion resistance and environmental protection:

It has strong resistance to chemical substances such as acid and alkali, and is suitable for various water quality conditions. At the same time, the HDPE geomembrane produced by the new material is non-toxic and tasteless, and will not pollute the water quality and aquaculture organisms.

4. Convenient construction:

HDPE geomembrae is easy to cut, weld and lay, the construction speed is fast, and the construction cost is reduced.

u Application of high density geomembrane in aquaculture

1. impermeability

High-density geomemofilm has a very low permeability coefficient, which can effectively prevent aquaculture water bodies such as fish ponds and shrimp ponds from leaking into the ground, avoid waste of water resources, and maintain the stability of aquaculture water level, thus providing a relatively stable living space for aquaculture organisms.

2. Water quality maintenance

Due to the isolation effect of geomembrane, the direct contact between aquaculture water and soil is reduced, and the dissolution of nutrients and minerals in the soil is reduced, so that the change of water quality conditions is smaller, which helps to maintain the stability of water quality and reduce the cost and time of water quality regulation.

3. Dissolved oxygen management

The use of high-density geomemes can reduce the oxygen loss caused by water infiltration into the soil, making it easier to monitor and maintain the oxygen content in the water at a suitable level, thereby saving the cost of oxygen replenishment for fish ponds, providing adequate oxygen for aquaculture organisms, and promoting their growth and development.

4. Disease prevention and control

The soil and water are isolated, the environmental adaptability of bacteria and other pathogens in the fish pond is reduced, and the possibility of disease transmission to the pond is reduced, thus reducing the risk of disease of aquaculture organisms, ensuring the healthy growth of fish and shrimp, and reducing the cost of disease prevention and control in the breeding process.

5. Breeding management

The bottom of the pond is smoother, without weeds, sludge and other debris, not only convenient for daily cleaning and disinfection work, but also conducive to improving efficiency in fishing, shortening fishing time, reducing damage to aquaculture organisms, and improving the vitality and freshness of fish and shrimp.

6. Cost control

Compared with traditional aquaculture pond construction materials, high-density geomembrane has a long service life and low maintenance cost, which can reduce the long-term investment in the aquaculture process.

u Economic benefits of high density geomembrane in aquaculture

u Future prospects of high-density geomembrane in aquaculture in China

1. Market demand growth

1) Aquaculture scale expansion: The size of China's aquaculture market is expected to maintain growth at a growth rate of close to 5%, whether it is a new aquaculture pond or the transformation of old ponds, providing a broad market space for high-density geomembrane.

2) Diversification of farming modes: With the development of farming technology, new farming modes such as factory farming and recirculating aquaculture continue to emerge, which have higher requirements for the control of the farming environment. High-density geomembrane, as an important material for seepage prevention and pollution prevention, can better meet its needs.

2. Technological innovation and development

1) Research and development of new materials: Scientific research institutions and enterprises will increase investment in research and development of new high-density geomembrane materials, and explore the use of more advanced polymer materials, additives and composite materials to improve the performance and function of geomembrane.

2) Intelligent application: Combined with the Internet of Things, big data, sensors and other technologies, to achieve intelligent monitoring and management of high-density geomembrane, through the installation of sensors on the geomembrane, real-time monitoring of aquaculture water temperature, dissolved oxygen, pH and other parameters, as well as geomembrane leakage.

3) Integration with other technologies: high-density geomembrane will be more closely integrated with other technologies and facilities of aquaculture, such as the use of water purification equipment, oxygen equipment, temperature control equipment, etc., to form a complete set of efficient aquaculture system and jointly promote the development of aquaculture industry.

3. Policy support and promotion

Industrial support policies: The government will introduce a series of policies to support the development of aquaculture industry, including subsidies for the construction of aquaculture infrastructure, and support for the promotion of new aquaculture technologies and materials.

u Summarize

HDPE geomembrane is very important in aquaculture. Its excellent anti-seepage performance can effectively prevent the leakage of pool water and the inflow of underground pollutants, and maintain the stability of water quality. Construction can be flexibly laid according to the site, although the technical requirements for welding and other high, but after done can be used for a long time. It can reduce the exchange of substances between the bottom of the pond and the water body, inhibit the excessive growth of algae, reduce the risk of disease transmission, provide a healthy environment for aquatic animals, and improve the density and yield of aquaculture. In terms of cost effectiveness, although there is an initial investment, the subsequent maintenance cost is low, and the waste of water resources and the use of drugs can be reduced, promoting the development of aquaculture in an efficient, environmentally friendly and sustainable direction