UV Resistant Fish Pond Geomembrane

The conventional ordinary anti-seepage membranes usually have problems such as easy aging under open-air exposure, brittle cracking at low temperatures, and weak puncture resistance. When used in fish ponds for aquaculture, they are prone to membrane rupture and leakage, short-term failure, and frequent rework and rectification, which significantly increases the production costs. UV Resistant Fish Pond Geomembrane is a specially improved HDPE anti-seepage material for fish farming. It differs from ordinary engineering anti-seepage membranes. Its formula contains anti-ultraviolet, antioxidant, and low-temperature modification additives, which are specifically adapted to the complex working conditions of fish ponds, such as long-term underwater immersion, all-weather open-air exposure, large day-night temperature differences, and water body acid-base corrosion.

Process Advantages

This Fish Pond Geomembrane is produced through a mature integrated extrusion-blowing and calendering process. The membrane is uniformly thick and has excellent toughness and strong sealing performance. It can effectively prevent water leakage in the pond, lock in the fertilized water for breeding, prevent the return of soil salinity, and also resist being gnawed and punctured by fish, shrimp, and crabs, as well as repeated erosion by wind and waves. With its stable weather resistance and anti-seepage performance, it has become the mainstream preferred material for the renovation of domestic large-scale fish ponds and the construction of anti-seepage projects for new fish ponds.

Formula Process and Design Highlights

This UV Resistant Fish Pond Geomembrane model abandons the general geotextile membrane formula and adopts a brand-new high-density polyethylene resin as the base material. It scientifically combines food-grade UV-resistant additives, antioxidants, high-purity carbon black, and low-temperature-resistant modified raw materials. The entire membrane is processed and molded through dual processes of extrusion blow molding and precise calendering. The overall membrane has no impurities, no pinholes, uniform thickness, and a dense and stable physical structure. It is divided into two categories: a conventional underwater-specific model and an open-air anti-aging-specific model. It precisely distinguishes between two farming conditions: underwater sheltered from light and open-air exposure to sunlight. From the source of the raw material formula, it eliminates the short-term powdering, cracking, and brittleness defects of ordinary membrane materials, and is suitable for long-term use in aquatic farming applications.

Specification Selection Guide for Working Conditions

Based on the water depth of the fishpond, the type of fish to be raised, the open-air environment, and the geological conditions, the specifications are divided to avoid waste in selection or insufficient performance, and to adapt to all scenarios of aquatic prevention and sealing projects:

1. Shallow water and small-scale fish ponds (1.0-1.5m)

Suitable for small-scale breeding ponds, temporary breeding turnover ponds, shallow water landscape breeding pools. The geological conditions should be flat without sharp and hard objects. It is recommended to use 0.3mm or 0.4mm thin-type sealing membranes. The basic sealing effect meets the standard, and the cost performance is outstanding, suitable for large-scale lightweight sealing construction.

2. Standardized adult fish breeding ponds (1.5-2.5m)

This is the mainstream specification in the market for aquatic engineering projects. It is suitable for most freshwater adult fish breeding ponds and conventional water storage ponds. It balances the sealing stability and construction cost performance. It is recommended to use 0.5mm or 0.6mm standard thickened sealing membranes. It can meet the daily water body moisture retention, prevention of fertilizer water loss, and water and soil isolation needs.

3. Deep water and hard aquatic breeding ponds (2.5m and above)

For deep-water breeding, crayfish, and crustacean aquatic breeding scenarios, the pond bottom is covered with gravel and hard objects, the risk of aquatic creatures biting and piercing is high, and the water pressure is large. It is recommended to use 0.7mm, 0.8mm, or 1.0mm thickened high-strength sealing membranes, which significantly enhance the anti-piercing, anti-water pressure, and anti-tearing capabilities.

4. Special for all-year-round open-air sun-exposed ponds

For unshaded open-air ponds, elevated breeding pools, and areas with extreme temperature fluctuations throughout the year, custom-made anti-aging formula membrane materials are provided to strengthen UV resistance and anti-high and low temperature performance, preventing long-term sun exposure from causing membrane aging and failure. It is suitable for all-weather open-air breeding conditions.

Core Engineering Performance Advantages

1. Extremely low permeability coefficient, with remarkable water retention and fertilizer preservation effect

UV Resistant Fish Pond Geomembrane has a permeability coefficient of ≤ 1×10⁻¹³ cm/s. The membrane body is dense without any holes, and the overall sealing and anti-seepage performance is excellent. It can completely prevent the downward leakage of pond water and the leakage from the slope side, effectively solving the common problem of water leakage in sandy pond areas, firmly locking the water body nutrients, avoiding fertilizer loss and poor water quality, and stabilizing the fish pond breeding water environment.

2. High strength and toughness, suitable for dynamic deformation of the pond body

The membrane body has balanced longitudinal and transverse tensile strength and excellent flexibility. It can adapt to slight foundation settlement and soil shrinkage deformation of the pond bottom. Daily personnel pond inspection and slight water body disturbance will not cause tearing or damage. It is suitable for the dynamic soil environment of the fish pond and eliminates local membrane leakage.

3. Wide temperature and weather resistance, not afraid of extreme temperature differences in all seasons

The modified formula is suitable for extremely wide temperature differences. At -35℃, it does not crack or shrink, and at 70℃, it does not soften or deform. It can withstand the acid and alkali erosion of the breeding water body, the long-term corrosion of fish and shrimp excrement, and the corrosion of water and soil microorganisms. It is stable after long-term immersion in the water body and has no deterioration or damage problems.

4. Anti-UV and anti-aging, ultra-long outdoor service life

The exclusive anti-ultraviolet formula can effectively block the damage caused by sunlight UV rays, significantly delaying the aging speed of the membrane body. Under normal outdoor working conditions, the service life can reach 8-15 years, and under long-term underwater shading and buried use, the service life can reach more than 20 years, far exceeding that of ordinary non-standard anti-seepage membranes, and significantly reducing the frequency of pond renovation.

5. Strong puncture resistance protection, suitable for complex pond bottom geology

The formed membrane body structure is tight, with excellent impact resistance and puncture resistance. It can effectively resist the puncture of pond bottom stones, grass roots, and hard debris, and at the same time, it can withstand the biting and wear caused by crayfish, turtles, etc., from crustaceans. This reduces the risk of membrane leakage and pond leakage from the source.

Multi-scenario Application Fields

1. Anti-seepage for diversified aquaculture

The UV Resistant Fish Pond Geomembrane is fully compatible with adult fish ponds, crayfish ponds, mud carp and snakehead ponds, soft-shelled turtle and soft-shell turtle ponds, bullfrog ponds, lotus root co-culture ponds, and high-density intensive ponds. It specifically addresses issues such as leakage in sandy ponds, nutrient loss, soil salinization, and unstable water quality in aquaculture, thereby increasing the survival rate of fish fry.

2. Anti-seepage for agricultural water conservancy projects

It can be used for slope anti-seepage of farmland ponds, agricultural water storage ponds, water diversion channels lining, water collection pits anti-seepage, sewage treatment sedimentation ponds, and water and soil isolation in aquaculture effluent treatment ponds. It is suitable for small-scale agricultural water conservancy and soil and water conservation projects.

3. Anti-seepage scenarios for environmental protection

It is compatible with small-scale biogas tanks anti-seepage, simple sewage anti-seepage treatment in factory areas, orchard water and fertilizer collection ponds, and garden landscape ponds anti-seepage and anti-leakage. It has strong versatility and can meet various lightweight water and soil isolation and anti-seepage protection needs.

Field Case: Performance of Anti-Sewage Film Installed in Fishponds in Shandong Province After 3 Years

Basic Information

Location: Large-scale freshwater aquaculture base in Dezhou, Shandong Province. The total area of the fish ponds is 150 acres, divided into 12 independent breeding ponds.

Paving time: April 2022

Selected product: 0.5mm thick anti-aging HDPE fish pond anti-seepage membrane, combined with geotextile protective layer construction

Operating environment: Used outdoors all year round. The extreme maximum temperature in summer is 39℃, the minimum temperature in winter is -16℃, and the rainfall is concentrated during the rainy season; the original soil of the pond was sandy loam, and the leakage problem of the pond was prominent before the renovation.

Actual Usage Effect

1. The waterproofing is long-lasting and durable, with no problems of damage or leakage.

After being laid for 3 years, the UV Resistant Fish Pond Geomembrane shows no signs of aging, cracking, powdering, or perforation. The welding seams at the bottom and slope of the pond are firmly and intact. This has completely solved the problem of continuous water leakage and frequent water pumping for replenishment in the original sandy pond, reducing the monthly water replenishment volume by 75% and significantly saving the electricity cost for pumping water.

2. The water body's nutrient content remains stable, improving the breeding yield.

The nutrients in the water body no longer leak downward, and the water quality pH value and fertilizer status are more stable. The survival rate of fish seedlings has increased by 21% compared to before the renovation, reducing feed waste and lowering the overall feeding cost.

3. Daily maintenance is more convenient, reducing operation and maintenance costs.

There is no need to clear the pond every year to check for leaks and repeatedly repair the bottom; it effectively avoids turbid water bodies caused by bottom mud settling, making water quality regulation simpler, and reducing the expenses for water adjustment and bottom modification chemicals.

4. It can withstand seasonal climate changes and has strong anti-erosion capacity.

The membrane body does not soften or crack under long-term summer exposure; in the frozen soil and frozen expansion environment, the slope waterproof membrane does not have shrinkage or cracking; it can resist large water surges during the rainy season and long-term pounding by wind waves, with strong structural stability.

Customer Feedback

"Previously, the fishpond had a sandy bottom and suffered from water seepage every year. Just for replenishing water and fertilizers, we had to spend over 30,000 yuan each year. After laying this anti-aging HDPE anti-seepage membrane for three years, the pond basically doesn't leak anymore. The daily maintenance has become much easier. At first, we were worried that it wouldn't last long due to sun exposure and wind erosion. But now, three years have passed and the membrane is still intact and sturdy. Compared to the annual repairs to the pond bottom, this is much more cost-effective. Many nearby fish farmers have followed my plan to renovate their ponds." ------ Fishpond base manager, Boss Li

FAQ

Q1: What are the fundamental differences between UV-resistant fish pond geomembrane and ordinary black geomembrane?

The ordinary geomembrane only meets the basic anti-seepage requirements. Its formula is simple and lacks sufficient UV-resistant additives. If exposed to the sun for 3-6 months, it is prone to aging, cracking, and powdering. This UV Resistant Fish Pond Geomembrane is added with special UV-blocking, antioxidant, and low-temperature modification raw materials. It is specifically optimized for the open-air exposure conditions of fish ponds and can significantly delay the aging speed of the membrane. The outdoor service life is 2-3 times longer than that of ordinary membrane materials, and it is suitable for long-term open-air operation of the pond.

Q2: How should different types of aquaculture choose the thickness of the anti-seepage membrane?

Pure shallow water fish farming and breeding ponds for seedling turnover can choose a thickness of 0.3mm-0.4mm; conventional standardized fish farming ponds should preferentially use the industry-standard thickness of 0.5mm-0.6mm; for shrimp, crabs, and other crustacean farming, due to the risk of biting and puncturing, and the greater water pressure, it is recommended to choose a thicker model of 0.7mm-1.0mm, which can effectively avoid membrane rupture and leakage problems.

Q3: After laying the HDPE anti-seepage membrane, will there still be soil salt re-accumulation and water quality deterioration in the fish pond?

No. The anti-seepage membrane is laid seamlessly and completely over the entire area, which can completely isolate the upper aquaculture water body from the lower soil layer, completely blocking the upward infiltration of underground salt, impurities, and stabilizing the pH value of the water and the water balance. It can effectively solve the problems of soil salinization, muddy bottom, and large fluctuations in water quality in sandy ponds, significantly improving the survival rate of aquatic products and reducing the use of water transfer and bottom modification agents.

Q4: After the anti-seepage membrane is laid, is regular maintenance required in the later stage?

Basically, no complex operation is needed. This product has excellent anti-aging, anti-corrosion, and erosion resistance properties. Once laid, it can be used stably for a long time. Daily maintenance only requires avoiding heavy machinery and sharp tools cutting the membrane body; during annual pond cleaning, gentle operation is sufficient, and there is no need for frequent repairs or replacements. Compared with traditional soil ponds and concrete slope protection, it greatly reduces the later-stage breeding operation and maintenance costs.