How many years does the 0.5 fish pond anti-seepage film can be used for?
Fish pond anti-seepage film can be used for several years. Today we will focus on the relevant knowledge of impermeable membrane in aquaculture, and give a detailed explanation of the construction precautions in use.
The anti-seepage treatment is carried out by using the anti-seepage membrane, which is not only non-polluting, but also ensures the water quality of the culture pond and is also convenient for cleaning. The high-quality anti-seepage film is also resistant to ultraviolet rays and anti-aging, which solves many problems for farmers. The new material fish pond anti-seepage membrane has a service life of more than 20 years in the soil. If it has a service life of 5-10 years under the sun, the reclaimed fish pond anti-seepage membrane has a service life of more than 10 years in the soil. Under the sun, the service life is 3-10 years.
The anti-seepage film with a thickness of 0.5 mm is a commonly used anti-seepage film specification for fish pond anti-seepage. The high-quality 0.5mm thick anti-seepage film can fully meet the normal needs of fish pond anti-seepage. As long as it is used reasonably, the high-quality 0.5mm thickness of the impermeable membrane can last for more than ten years.
Excavation of the new fish pond or renovation of the old pond, to ensure that the fish pond area is more than 2 acres, the water depth is more than 2 meters, the bottom of the pool requires good water retention performance, no leakage, sufficient water source and no pollution, good water quality, and The leeward sun. The fish pond anti-seepage material should be HDPE impermeable membrane for waterproof treatment.
How to pour the anti-seepage membrane of the fish pond? The waterproof effect is good. After fishing in winter, it is reasonable to plan to drain the pond water first, digging the debris and drying it for 1 winter and 20 days, at the bottom and side of the pool. Spread a layer of 15-20 cm thick clay evenly and then mechanically compact or compact. Then lay a layer of 0.5 mm thick anti-seepage film as the anti-seepage protective layer, and accurately measure the relevant scale according to the shape of the fish pond.
The fish pond should be leveled and compacted before laying the anti-seepage film. There must be no gravel roots to prevent the anti-seepage film from being damaged. After finishing, measure the dimensions and measure the bottom and slope separately, and leave enough margin. According to the measurement size, choose different specifications of the anti-seepage film, which is normally 6 meters wide. After the anti-seepage film is laid, the film and the film are overlapped by about 10cm-15cm, and welded by a welding machine to make the geomembrane become a whole by welding, which has a good anti-seepage effect. After welding, the slope is covered with non-woven fabric to prevent sun exposure, and the purpose of protecting the geomembrane is achieved, and the service life is increased.
Precautions for laying the impermeable membrane of fish pond:
1. When laying the anti-seepage film of fish and shrimp culture, the tarpaulin should be kept at a certain degree of slack, and the slack should be applied to the rock surface without the tightness of the palm. When laying in the hoop direction, it should be noted that the longitudinal direction of the impermeable membrane of the fish culture is perpendicular to the longitudinal direction of the tunnel.
2. The surface of the geomembrane is covered with a layer of soil or fine sand without impurities. 8 but 10 cm thick is used as a protective layer. The geomembrane is rotted when the construction is free. The wall of the fish pond is vertical, and the brick can be cut and then the bottom. And the four-wall brick wall powder cement, such as the fish pond is slope, you do not need to cut the brick wall, directly on the welded geomembrane powder cement.
3. Before the weld is welded, the heat sealing machine is preheated, and the temperature and crawling progress are set. The temperature is generally set at about 300 °C, and the speed is set at 2 speed units. When the indicator light turns from green to red. It can be operated. During the welding process, the temperature or speed control knob should be adjusted according to the hot melt condition of the seam until the weld seam is welded.
4. The surface of the membrane should be free of moisture, dust, debris and other debris.
5. At the hdpe film lap joint, wrinkles should be removed. When the wrinkle is 10 cm in size, a circular or elliptical patch is used, and the patch size should be 5 cm beyond the circumference of the slit.
6. When the ambient temperature and adverse weather conditions seriously affect the film welding, the operation should be stopped.
The fish pond anti-seepage membrane is especially suitable for the case where the soil can not retain water. In some areas, the sandy soil is filled with a pool of water and is leaked in a short time. In this case, the use of the anti-seepage membrane is more costly than the traditional anti-seepage foundation. Low, quicker construction, more convenient maintenance, etc., which is loved by the majority of aquaculture farmers.
