HDPE Geomembrane Application in Aquaculture

Recently, the Food and Agriculture Organization of the United Nations (FAO) released the 2022 World Fishery and Aquaculture Report, in which the overview of global fisheries and aquaculture in 2020 was summarized.

In 2020, the total output of fishery and aquaculture reached a record high of 214 million tons. It is estimated that the global aquatic animal production in 2020 will be 178 million tons, including 90 million tons of fishing (51%) and 88 million tons of aquaculture (49%). The continuous growth of aquaculture has made up for the decline of fishing and fishery production. For aquatic animal production, the above general trends mask significant differences between continents, regions, and countries. In 2020, Asian countries will be the major producers, accounting for 70% of the total output, followed by the Americas, Europe, Africa, and Oceania. China remains the largest producer, accounting for 35 percent of total output. In recent decades, the expansion of aquaculture has promoted the growth of aquatic animal production in inland waters, and its proportion in total production has risen from 12% in the late 1980s to 37% in 2020.

Fishing and aquaculture production all over the world.

With the rapid development of aquaculture, the problems in this industry have become prominent. Aquatic product quality safety, ecological environment safety, and biological safety are all facing great challenges.

Why do these problems exist in the aquaculture industry?

The first thing to consider in aquaculture is the construction of aquaculture ponds.

It is necessary to mention the traditional breed aquatics methods, such as direct pond excavation and concrete in building fish ponds and shrimp ponds. What problems will arise in the construction of the traditional aquaculture pond?

1. Traditional direct ponds excavation, which is easy to muddy water, seepage, and dam break after drainage.

2. After the fish pond is dug and poured with concrete, the seepage water slows down, but the cost is high, which is not conducive to the high initial investment cost of farmers.

3. The fish pond uses ordinary agricultural film for anti-seepage treatment, which has a short service life, is easy to damage, and needs long-term maintenance, so the cost is also higher.

The traditional fish pond mode not only has poor waterproof performance but also the harmful substances in the soil pose a threat to the fish or shrimp. Such as the chemical composition in the leachate will kill the fish and shrimp. Although the investment cost of direct fish pond excavation is small at present, it is not conducive to long-term cultivation. In the long run, the cost is higher.

Are there any other new construction models to improve the problems of aquaculture ponds?

Through comparison, it is found that the use of HDPE Geomembrane as the anti-seepage treatment of aquaculture ponds is anti-aging, durable, difficult to puncture, and less expensive than concrete. It is suitable for early investment in fish pond aquaculture and can be used for up to 50 years.

What are the specific advantages of using HDPE Geomembrane in aquaculture ponds?

1. Excellent anti-seepage performance

The HDPE Geomembrane has excellent anti-seepage performance and good water storage performance, the geomembrane can prevent the water in the fish pond from seeping into the soil, control the water level, and save the cost of water conservation. It also prevents the underground harmful substances from filtering back into the fish pond, improves the survival rate of the fish population, and avoids economic losses caused by underground toxic substances pollution. 2. Keep water quality stable

The HDPE Geomembrane can better maintain the stability of water quality, reduce the change of water conditions, and reduce the cost of water quality control.

3. Maintain oxygen content

The HDPE Geomembrane can reduce the oxygen loss caused by infiltration into the soil, help the monitoring of oxygen content in water, and reduce the cost of oxygen supplements in fish ponds. 4. Speed up fishing speed

The HDPE Geomembrane can inhibit the growth of algae in the water and is easy to clean. As the geomembrane itself contains anti-ultraviolet additives, the geomembrane is not afraid of the sunlight and is easy to maintain. The use of geomembrane can provide more convenient monitoring and a safer environment. Because the cost and time of maintenance are very low, it can be more convenient and fast to catch, thus saving time costs.

5. Keep the system stable

Compared with traditional direct pond excavation, the use of HDPE Geomembrane for slope will be more stable, which can reduce the threat of wind, rain, and other natural conditions to the fish pond, maintain the system stability during design and prevent the loss of breeding crops due to environmental damage. Besides, the use of HDPE geomembrane can make the pond have a steeper slope and deeper depth, which is equal to a disguised increase in production. The stability of the system, of course, also reduces the maintenance and earthwork costs of the fish pond. 6. Prevent illness

HDPE Geomembrane has excellent resistance to chemicals. The chemical composition in the leachate does not pose a threat to the HDPE liner. Thus, the Geomembrane can isolate harmful substances and prevent the spread of harmful substances.

After using the HDPE Geomembrane, the environmental adaptability of bacteria in the fish ponds will be reduced, so on maintaining the healthy growth of fish and shrimp. Because the contact between soil and water is isolated, the chemical substances and bacteria in the soil will not spread to the pond, reducing the possibility of disease transmission. It can be said that the use of geomembrane reduces the drug cost of fish farming and the risk of large-scale fish and shrimp deaths caused by diseases.

7. increase output

After using the HDPE Geomembrane, there will be no weeds, sludge, and other things at the bottom of the pool that will affect the salvage, so the fishing can be carried out more. The fishing time will be reduced, and the vitality and freshness of fish and shrimp will be enhanced.

8. It is convenient to clean the pond

If the HDPE Geomembrane is used in the fish ponds and shrimp ponds, it will be easier to clean the ponds. It is also easier to install a clean drainage system in the ponds. reduce routine maintenance costs.

9. Improve the breeding cycle

After using the HDPE Geomembrane, it is easier to clean and catch fish, saving a lot of cost and time, speeding up the weekly cleaning of fish ponds, and increasing the output in a disguised way.

10. Long service life

The service life of the HDPE Geomembrane is up to 50 years.

Because the HDPE Geomembrane is made of high-quality polyethylene virgin resin, the main component is 97.5% polyethylene, 2.5% carbon black, anti-aging agent, antioxidant, ultraviolet absorber, stabilizer, and other additives. The carbon black can improve UV resistance. So the HDPE geomembrane is not afraid of the sunlight. Case sharing

There are more than 50 countries in the world that raise shrimp! But what are the top five countries in the world?

1. Ecuador

Ecuador is still on the “gold list” of world shrimp farming and shrimp export, which has lasted more than 50 years since 1969.

After many failed shrimp farming models, Ecuador adopted a new method, that is, to capture parent shrimp from the estuary and transport them to the incubator for production and trade within 4-8 months, which is also the basis of the global shrimp farming revolution.

Besides, there is also a shrimp culture mode, which adopts the method of zoning culture to avoid the environment near the mangroves but build shrimp ponds in higher terrain areas. With the application of HDPE Geomembrane in shrimp ponds, upgrading shrimp ponds’ environment, and automatic feeding technology, Ecuador’s output has increased by six times from 2009 to 2022, accounting for 22% of the global output.

Thanks to the development of the shrimp industry, the income of farmers can also increase by 45-5000 pounds per year (equal to nearly 1.04 billion pounds). In 2021, Ecuador’s shrimp production will exceed 1 million tons, with a growth rate of 31%. It is expected that shrimp production will be more robust in 2022.

2. India

After ceding the title of shrimp industry to Ecuador, India ranked second in the world ranking of the shrimp industry.

At present, the country has applied a series of high-tech technologies in shrimp farming and management to improve work efficiency and output. Shrimp ponds in India are relatively small, with only about 0.2-0.5 hectares per pond and 2-4 pounds per farm. But, the yield of the second crop in India in 2022 is expected to be lower than the normal level, estimated to be only 50% of the first crop.

Although the number has decreased, India is still in a high position in the world shrimp farming industry. By 2024, India may increase to 1.4 million tons/year according to the advantages of new shrimp farming areas such as Gujarat and white shrimp farming. India is also accelerating the implementation of the shrimp culture technology reform plan, using HDPE Geomembrane to build shrimp ponds, so on regain first place in the world shrimp market. 3. Indonesia

Since the 1980s, Indonesia has been one of the largest shrimp producers in Southeast Asia, which is rooted in the cultivation of Penaeus monodon.

In recent years, the country has turned to a new shrimp culture mode, adopting a circular design with a diameter of 5 to 30 meters. The frame is composed of metal wire mesh or bamboo, and HDPE Geomembrane is laid inside. This model has the advantages of convenient water circulation, fast sewage discharge, and easy application of new technology, which is welcomed by young and small farmers.

According to Mr. TB Haeru Rahayu, Director of the Indonesian Aquaculture General Department, Indonesia has an ambitious plan. It is estimated that by 2024, the shrimp output will be increased to 2 million tons, the pond scale will be expanded, the productivity will be improved, and output will reach 30 tons/ha/year.

4. Thailand

Thailand began to raise shrimp in the 1970s and rose to the world level in the 1990s, thanks to the application of modern scientific and technological shrimp farming models, such as the construction of ponds with HDPE Geomembrane, automatic feeding technology, and high-quality feed. Biosafety, parent shrimp research, and efficient use of probiotics for convenient water exchange and intensive farming

In 2022, Thailand aims to achieve a domestic output of 320000 tons of white prawn in South America, which will increase to 400000 tons in the next year.

5. Vietnam

Since 1990, Vietnam has developed prawn farming farming mode and technology, using geomembrane to upgrade traditional fish ponds. At present, the area of shrimp culture in Vietnam exceeds 600000 hectares. The main varieties are Penaeus monodon and Penaeus alba, with an annual output of more than 300000 tons.

In 2022, Vietnam’s South China Sea product industry aims to expand the shrimp breeding area to 750000 hectares, with an output of 980000 tons and an export volume of 4 billion, an increase of 2.5% over 2021. Thus, if we continue to maintain the shrimp market, Vietnam’s shrimp export will reach 10 billion dollars by 2025.

Thus, shrimp farming is very promising for Vietnam and even the world. This is also one of the industries that the younger generation needs to use modern technology to develop, which is expected to bring high economic benefits to the aquaculture industry in many countries.

As the leading geomembrane manufacturer, supplier, and wholesaler, Our quality satisfies the ASTM GRI-GM13 standard. Besides, we have obtained CE, ISO9001, ISO14001, and ISO45001 certificates. Our customer projects include aquaculture (fish ponds, shrimp ponds), water conservancy (canals, dam), environmental protection (landfill sites, sewage treatment), mining (heap leaching ponds, tailings), agriculture (water reservoirs), and many other projects, customer satisfaction is 100%.

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