Fish&Shrimp Aquaculture Pond Liners
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Fish&Shrimp Aquaculture Pond Liners
Right now, a lot of fish/shrimp ponds are being built to farm fish/shrimp in commercial use because of increasing huge demand for good protein nutrition from modern people. A fish/shrimp pond, is a controlled pond, artificial lake, or reservoir that is stocked with fish/shrimp and is used in aquaculture for fish/shrimp farming, or is used for recreational fishing or for ornamental purposes. HDPE pond liner (also called HDPE geomembrane) is very popular in fish/shrimp farming pond management system.
Fish/shrimp Pond Introduction
A fish/shrimp pond, is a controlled pond, artificial lake, or reservoir that is stocked with fish/shrimp and is used in aquaculture for fish/shrimp farming, or is used for recreational fishing or for ornamental purposes. Fish/shrimp ponds are being promoted in developing or undeveloped countries. They provide a source of food and income from the sale of fish/shrimp for small farmers and can also supply irrigation needs and water for livestock. And from many years ago, the intensive fish/shrimp farming is done mainly because of income request for the people in developing or undeveloped countries. The cultivated fish/shrimp will be largely exported to developed countries or developing countries.
Fish/shrimp Pond Liner(Aquaculture Pond Liners): HDPE Pond Liner
Several pond liner types are available for fish/shrimp farming. Among these types, HDPE pond liner (also called HDPE geomembrane) is very popular to be used in fish/shrimp farming.
Below are scientific references to support the use of HDPE geomembrane in aquaculture farming application:
(1) Aquaculture farms in Belize: Robins P. Mclntosh, 2000, reported how using an HDPE pond liner reduced erosion of pond banks, increased the speed of the turn-around time between crops, sustained water levels, and improved pond efficiency.
(2) Agromarina de Panama Farm, Panama: Bray et al, 2001, issued a report describing how the destructive White Spot Syndrome Virus(WSSV) was bringing production to a halt in earthen ponds. The report found that survival rates increased from 9% in earthen ponds to 80% in ponds lined with a 0.75mm HDPE geomembrane.
(3) East Java, Indonesia: N. Taw et al., 2002, reported that productivity improved from 3634kgs/ha in an earthen pond to 10094kgs/ha in ponds lined with HDPE geomembrane.
Comparison between Two Types of Pond Farming
| Earthen (or concrete) Pond Farming | HDPE Liner Lining Pond Farming |
| Harmful acid, alkaline in soil and water maintenance | Good water maintenance without soil pollution |
| Underground water becomes salty due to seawater seeping | No happening of this case |
| Fast plankton growing in the later stage of culturing | Slow plankton growing in the early stage but become stable in the later stage |
| Difficult to remove organics which will cause contamination | Easy organics removal with quite low risk of bacterial infection |
| Require treatments after harvest (eg. basking, soil replacement and sterilization etc.) | Easy pond regeneration after fresh water cleaning only |
| Dike is easily destroyed by water wave or crabs |
Dike is difficult to be destroyed because of high tensile strength and excellent elasticity of hdpe liner |
| Shrimp gill are easily contaminated by mud | Gill will not be polluted |
| Two crops per year | crops increase one time or two times with three or four crops per year |
| High cost and long construction period | Cost can be saved 20%-50% |
| Rough surface which will cause fish or eel or shrimp to be hurt | Smooth surface which will greatly reduce the risk of hurting aquaculture animals |
| Technical Data Sheet of HDPE Geomembrane (Pond Liner) for Aquaculture Farming | ||||||
| No. | Item | Value | ||||
| 0.3mm | 0.35mm | 0.5mm | 0.75mm | 1.00mm | ||
| 1 | Density | 0.94 | ||||
| (g/cm3) | ||||||
| Tensile properties | ||||||
| 2 | Yield strength | 5 | 5.5 | 8 | 11 | 15 |
| (N/mm) | ||||||
| Break strength | 8 | 9.5 | 14 | 20 | 27 | |
| (N/mm) | ||||||
| Yield elongation/% | 12 | |||||
| Break elongation/% | ≥700 | |||||
| 3 | Tear resistance/N | 40 | 44 | 65 | 93 | 125 |
| 4 | Puncture resistance/N | 105 | 112 | 176 | 240 | 320 |
| 5 | Stress crack resistance/h | 500 | ||||
| 6 | Carbon black content/% | 2.0-3.0 | ||||
| Carbon black dispersion | Carbon black dispersion (only near spherical agglomerates) for 10 different views 9 in categories 1 or 2 and 1 in category 3 | |||||
| 7 | Oxidative induction time/min | Standard OIT≥100 | ||||
| High pressure OIT≥400 | ||||||
| 8 | Oven aging at 85°C | |||||
| Standard OIT-% retained after 90days | 55 | |||||
| High pressure OIT-% retained after 90days | 80 | |||||
| 9 | UV Resistance | |||||
| Standard OIT retained after 1600hrs | 50 | |||||
| High pressure OIT retained after 1600hrs | 50 | |||||
| 10 | -70°C Low temperature impact brittle property | Pass | ||||
| 11 | Permeability | ≤1.0×10-13 | ||||
| g•cm(cm2)•pa | ||||||
| 12 | Dimensional stability % | ±2 | ||||
1 Most popular thickness for pond liner farming system is 0.5mm and 0.75mm.
2 Net weight (kgs) per roll calculation formula: width m * length m * thickness mm * 0.94
3 5.8m width is usually made to fit the 20’ container.
4 Our maximum width is 8m and length can be made as request.
5 Most ordinary and popular color is black. Other color can be made based on minimum quantity request.
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