CASE STUDY
- Location – Philippines
- Product(s) – HDPE Liners
- Application – Aquaculture Ponds Lining System
Issue
The business of shrimp, fish or other aquatic products farming has grown from small, earthen ponds to large industrial operations that help sustain the local economies of many countries. In order to maintain profitability and aquatic products survival rate and ensure the uniform size and quality of them brought to market, the fish farmers must adopt good pond management practices.
The aquaculture industry is a large industry in the market, because the entire scale is relatively large, so if you choose to join this industry, you need to consider all aspects. The problem of water seepage should be a major problem that plagues many farmers.
The Philippines has a monsoon tropical rainforest climate, with high temperatures throughout the year and hot weather, and a lot of water evaporated from the water surface of the pond in one day. If coupled with the continuous water seepage at the bottom of the pond, it will cause the cost of water storage and water quality control.
Solution
HDPE lining sheets are the ideal geosynthetic materials to prevent the leakage of water at the bottom of the pool. The HDPE liner can Effectively monitor water level and save related water costs.
Aquaculture pond lining sheets can greatly improve farming production processes by offering significant cost benefits and superior performance over soil, clay or concrete lined ponds. Or they can be directly made into aquaculture farming ponds via the help of supporting columns or bars.
HDPE pond liners has the following benefits for the aquaculture ponds lining system:
- Water Containment. The HDPE pond liner can keep water volumes consistent, waste products contained and prevent the intrusion of groundwater-borne pollutants from entering aquaculture ponds.
- Water Quality Control. Certified for drinking water containments without additives or chemicals that can leach out and impact water quality or harm animal life. The HDPE pond lining sheets can be repeatedly cleaned and disinfected without causing any decrease in the liner’s performance.
- Disease Control. A properly lined pond can reduce their diseases occurrence and impact. It is resistant to microbiological attack and growth.
- Soil Erosion Control. Eliminates slope deterioration caused by surface rains, wave action and winds. Prevents eroded materials from filling the pond and reducing the volume. Eliminate the erosion repairs costly.
Benefits
Feature and Advantages of HDPE Pond Liner
1）High anti-seepage ratio:
HDPE lining sheets have a great anti-seepage effect unmatched by ordinary waterproof materials, and is recommended in some projects with high anti-seepage requirements. It’s Permeability property is ≤1.0*10-13g.cm/(cm2.s.pa).
2）Chemical Stability
It has excellent stability, acid and alkali resistance, salt solution, oil, alcohol, etc., and is mostly used in sewage treatment and landfills.
3）Anti plant root system
HDPE lining hseets has excellent puncture resistance and resists most plant roots. It is a must-choice product for planting roofs.
4）Aging resistance
HDPE geomembrane liner has excellent anti-aging, anti-ultraviolet,anti-decomposition capabilities. Oven aging at 85℃, standard OIT, 55% retained after 90 days, oven aging at 85℃,high pressure OIT, 80% retained after 90 days.
5）High Mechanic strength
It has good mechanical strength, and is first choice for seepage prevention in water conservancy projects. The tensile strength, tear resistance, and puncture resistance properties all meet GRI-GM13 standard.
6）Low cost
Compared with other traditional materials, HDPE liners has obvious cost advantages and is the best product for water storage and anti-seepage.
7）Environmental protection formulation
The raw materials used in GEOSINCERE HDPE liners have reached relevant international standards, and are non-toxic and environmentally friendly. Widely used in drinking water ponds, breeding ponds, etc.
8）Rapid construction
Compared with other traditional materials, HDPE liners can be laid in a variety of forms to meet different construction requirements.
Summary
HDPE Pond Lining Sheets Installation Process
(1)Worksite treatment. The laying base should be solid and flat. There should be no roots, rubble, stones, concrete particles, steel bars, glass shards, etc. that may damage the HDPE liners within a vertical depth of 25 mm.
(2)Pave. The outdoor laying construction of HDPE pond liner should be above 5 °C, and there is no rain or snow-free weather below 4 winds. When laying the HDPE geoemembrane liner, the weld seam should be minimized. Under the premise of ensuring the quality, the raw materials should be saved as much as possible, and the quality can be easily ensured.
(3)Measure. measure the HDPE pond liner for cutting.
(4)Cutting. Cutting is according to actual size needs; the lap width is 10cm~15cm.
(5)Trial welding.Test welding must be performed before the welding work is carried out. The test welding shall be carried out on the sample of the impervious material provided. The length of the sample shall not be less than 1 m and the width shall not be less than 0.2 m. After the test welding was completed, three 2.5 cm wide test pieces were cut to test the tear strength and the weld shear strength.
(6)Welding. The HDPE pond liner is welded using automatic crawl type double rail welding machine. An extrusion hot-melt welder shall be used where the double rail welding machine cannot work. It’s matched with the welding rod of the same material with HDPE lining sheets. The welding process are as follows: adjusting the pressure, setting the temperature, setting speed, joints inspection, HDPE liners loading into the machine, start the motor. There shall be no oil or dust at the joints, and there shall be no debris, condensation, moisture and other debris in the lap joint surface of the HDPE liners. Must be cleaned before welding.
(7)Inspection. Air pressure detection: When using automatic crawl type double rail welding machine, the air cavity is reserved in the middle of the weld, and the air pressure testing equipment should be used to detect the strength and air tightness. After the construction of a weld is completed, both ends of the weld cavity are sealed, and the air chamber of the weld is pressurized to 250 kPa with a gas pressure detecting device for 3-5 minutes, the air pressure should not be lower than 240 kPa. And then at the other end of the weld, when the opening is deflated, the barometer pointer can be quickly returned to the zero side as qualified.
(8)Repair. If HDPE liners surface has holes and other defects and leakage, welding, damage, etc. in the welding process, use fresh base metal to repair them in time, make up each side more than the damaged part 10cm ~ 20cm.
(9)Anchor. There are many methods for HDPE liners anchoring: grooved anchoring, nail anchoring, expansion bolt anchoring, and embedded parts.
Specifications of HDPE Lining Sheets for Aquaculture Ponds in Philippines
- Total HDPE Liners quantity–26,000 squares meters
- HDPE Liners Thickness –0.75mm
- HDPE Liners Each roll size is 5.8m*100m
About GEOSINCERE
As the professional geotextile and geosynthetics manufacturer and wholesaler, GEOSINCERE is always committed to geotextile research and development, manufacturing and installation services. We can provide our customers with most extensive lines of geotextiles and geomembranes for civil, mining, environmental and aquaculture engineering applications. GEOSINCERE has been keeping on investing in technological innovation, manufacturing facilities improvement and turnkey engineering abilities. Our extensive lines of geosynthetics products are well known for their ensured quality, high performance, excellent durability and best cost effectiveness. GEOSINCERE brand geotextiles and other geosynthetics products and solutions can meet your requirements by our solid technologies, innovative engineering solutions and excellent customer services. Hope to be your partner.
Our main innovative, high quality products include geotextiles, geomembranes, geogrids, geocells, geosynthetic clay Liner, and drainage boards, etc al. GEOSINCERE customers are from more than 100 countries including America, Australia, France, Sweden, UK, Turkey, Hong Kong, Hungary, New Zealand, Poland, Mexico, Ecuador, Brazil, Pakistan, Bangladesh, Thailand, Vietnam, Malaysia, Indonesia, Singapore, Philippines, Sri Lanka, India, UAE, Saudi Arabia, Qatar, Kenya, Ghana, Ethiopia, Somalia, Nigeria, South Africa, Swaziland, Mongolia, etc.
GEOSINCERE offers both high quality geosynthetic products but also professional design and installation service. OEM, ODM, custom development and fabrication are also available. If you have any questions or inquiries, please fill and submit the following form, we will reply as soon as possible.
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