1. What are the main reasons for using Earth Shield geomembrane in landfills?
An important issue in landfills is the pollution control of leachate. After the landfill starts, a large amount of sewage is generated due to the influx of rainwater and surface water and the decomposition of the garbage itself. This is what we call leachate. This liquid has a high content of pollutants and a complex composition. The rapid penetration into the ground will cause serious pollution of groundwater for a hundred years.
In this case, the geomembrane is particularly important as the most important barrier in the anti-seepage system. The Earth Shield geomembrane’s 100% new imported resin raw materials, imported production lines, and strict quality control are the prerequisites for a solid and reliable anti-seepage barrier. Thus, many landfills in my country that use recycled geomembrane to cause the impermeable layer to crack and need to be renovated can use Earth Shield geomembrane products.
2. What is the difference between the production process of geomembrane, blown film, and flat extrusion?
There is no difference in the geomembrane production process, blown film, and flat extrusion. The only difference is that when the geomembrane with a rough surface is produced, it can be said in layman’s terms: the blown film process is a one-step process, the whole process is done in one go, and the production efficiency is higher; the flat extrusion process is a two-step process, and the smooth surface is first The geomembrane is done, and then the rough grains are glued on.
At present, more than 80% of the geomembrane production lines in the world use the blown film process. If the geomembrane is produced by the flat extrusion process, it can be judged to be an old production line. Because the rough surface geomembrane produced by the new blown film process is not only a one-step process, it has high production efficiency. More, the rough surface geomembrane produced is integrated with the film and used for slope prevention. Time is more reliable. Since the failure of slope landslides after the use of flat-extrusion geomembrane has occurred, large-scale projects have often stipulated the use of rough-surfaced geomembranes produced by blown film technology, which has also promoted the development of blown film technology.
3. Does the HDPE geomembrane index refer to GB national standard or the GRI-GM13 international standard?
The first thing to note here is that domestic indicators and international indicators are actually the same, but there are one or two domestic indicators that are low, and there is a delay in updating. (For example, the water vapor permeability coefficient in the national standard has been deleted from the international indicators, because the test has high requirements on the test instrument, and the measured value has no reference value when the reliability of the test instrument cannot be guaranteed.)
At present, Earth Shield geomembrane is produced and sold in by the GRI-GM13 international index, among which the international index of high-density polyethylene geomembrane is GRI-GM13. GRI refers to Geosynthetic Research Institute, the maker of international indicators: International Geosynthetics Research Institute, and GM refers to Geomembrane, which means geomembrane.
4. What is the widest width of Earth Shield geomembrane? What are the benefits of choosing a wider Earth Shield geomembrane?
The width of the Earth Shield geomembrane is now 8 meters wide. Geomembrane with a width of 8 meters has been more popular in major projects at home and abroad in recent years.
Earth Shield geomembrane is now used in more fields such as landfills, minerals, aquatic fisheries, etc. Most of these projects have a large paved area. Choosing a wider Earth Shield geomembrane can reduce welds. , Loss and construction period. Data shows that 90% of the leak points of the anti-seepage system are on the welds. Thus, the reduction of welds reduces the possibility of leakage and improves the anti-seepage effect. The shortening of the construction period can reduce labor costs and also reduce engineering costs. Thus, the benefits of using a wider Earth Shield geomembrane to customers, contractors, and construction units are very obvious.
5. Which engineering projects use HDPE geomembrane more?
The geomembrane itself has a wide range of applications, such as landfills, hazardous waste disposal sites, tailings dams, heap leaching tanks, oil seepage prevention, sewage plants, biogas tanks, and so on. Geomembrane is currently used in China’s engineering projects in these areas, and it has shown an upward trend in recent years. For some projects with more serious pollution, such as waste landfills, hazardous waste disposal sites, heap leaching ponds and tailings dams in the mining sector, and oil seepage prevention projects, the state, and local governments have paid special attention to seepage prevention. Because geomembrane is the most important barrier in anti-seepage, we pay more attention to the quality of the anti-seepage membrane. For a long time in the future, the market demand for geomembrane will continue to be strong.
6. What should be paid attention to when welding Earth Shield geomembrane?
Earth Shield geomembrane is not complicated. From the actual use, because it uses 100% new material, it is much better to weld than recycled geomembrane.
As for geomembrane, in general, the following conditions should be paid special attention to when welding:
First, when the geomembrane encounters concrete buildings during the welding process when the geomembrane cannot be laid and welded, it should be used with the geomembrane
Connecting locks of the same material (also called “E-locks”) are first implanted in the concrete building, and then welded according to the general welding method.
Second, if pipe fittings need to pass through the geomembrane in the site, the size and quantity of the pipes should be determined first, and many casing pipes prefabricated with prefabricated geomembrane should be welded to the HDPE film to avoid leakage.
Also, in case of poor weather or other force majeure reasons, if the welding project is to be suspended for more than 1 day during the construction period, sandbags should be used to fix the geomembrane that has been welded to avoid damage to the geomembrane.
7. How many electrodes are needed for general geomembrane welding, and what is the matching ratio?
Earth Shield geomembrane algorithm: for every 10,000 square meters of imported geomembrane, the usage of welding rod is generally about 35 kg.
Of course, the number of electrodes to be used for welding cannot be accurate because it is related to the topography of the project, the soil environment, and the engineering design. The Earth Shield geomembrane formula is only a reference based on the accumulated experience of many projects.
suggest that consumables such as welding rods should be more than less, or be prepared. For the specific quantity, it is safer to contact the Earth Shield geomembrane manufacturer for the details of the construction.
8. What are the advantages of using Earth Shield geomembrane in the closure system of waste disposal sites?
First of all, the purpose of closing the site is to prevent the infiltration of a large amount of rainwater from increasing the amount of landfill leachate, and at the same time to cover the odor of the landfill. The Earth Shield geomembrane is used in the cover system of the waste disposal site, because of the anti-permeability and chemical resistance of this material, and the cost is the lowest among all chemical materials. It is generally recommended to choose a high-density or low-density Earth Shield geomembrane.
We need to pay attention to that the selection of geomembrane during closure must be particularly cautious. After laying, if the performance of the geomembrane is not good, it is easy to be pierced by the stones laid later and lose its function. It also loses the meaning of closing the site. Yet, the various losses caused by the next renovation projects are not every What the construction unit and general contractor can afford.
9. What kind of raw materials are used in Earth Shield geomembrane?
Earth Shield geomembrane raw materials generally use imported 100% brand new resin, which is of high quality and is different from general-purpose resins. Because it is a special resin for geomembrane, it is very popular with imported geomembrane manufacturers. To control costs, many manufacturers break up recycled plastics and reuse them, which is what we usually call “recycled materials.” The results can be imagined.
10. How to sell Earth Shield geomembrane?
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