Case Analysis
- Location: Australia
- Product: HDPE landfill liner Material
- Application: Landfill Project
Issue
With the rapid development of industry and the increasing amount of domestic waste, Australian cities are faced with a large amount of waste to be disposed of. Garbage incineration and landfill are important ways of waste disposal at present. However, after the landfill, most of the domestic waste will rot with time and temperature changes, and the landfill leachate will corrode the anti-seepage layer of the landfill, and then enter the ground to form a highly polluted aquifer, which will affect the surrounding geology At the same time, with the complex groundwater system that is difficult to consider and track, it enters the surrounding soil and rivers, seriously affecting the surrounding environment. Especially landfills in mountainous cities are more likely to have environmental pollution impacts on lower-lying areas due to the elevation difference of the terrain. Therefore, how to solve the anti-seepage of garbage is the primary problem to be solved in landfill.
Solution
In order to prevent the harmful substances produced by garbage from polluting the environment, HDPE landfill liner material plays an important role. The HDPE landfill liner material in the garbage dump not only has a good anti-seepage effect, but also has a strong extensibility to adapt to the terrain, and the important It is that it can effectively resist corrosion, so that harmful substances cannot contact the land, so that the groundwater resources are fully protected.
(1) The landfill operation area should be covered in real time according to the different stages of the landfill site, and daily coverage, intermediate coverage and final site coverage should be achieved.
(2) The daily coverage of the landfill area can be covered with soil, HDPE landfill liner Material, LDPE geomembrane and other materials. Soil cover should be used, and the covering thickness should be 20-25cm; the inclined surface should be covered with film or cloth for daily covering. When other bulk materials are used as covering substitutes, the covering thickness should be determined with reference to the covering thickness and performance requirements of the soil. It is covered with HDPE landfill liner Material, preferably a geomembrane with a thickness of 1.5mm, to prevent tearing and to a certain extent sun protection.
(3) The middle cover should be mainly covered with HDPE geomembrane or LDPE film with a thickness of not less than 1mm, and clay can also be used, and meet the following requirements: When HDPE geomembrane, LDPE geomembrane and other materials are used for middle cover, it should be covered with For effective gas drainage measures, check the effective overlap between the cover and the rainwater gutter, and leave the slope where the rainwater flows to the gutter along the slope.
(4) The selection of HDPE landfill liner Material covering material shall meet the following requirements:
① The cover film should be black HDPE landfill liner material with a thickness of 1mm or more and a width of 6m or more, or a bentonite pad (GCL) with a thickness of 5mm or more. Ordinary garbage can also be covered with LDPE geomembrane.
②The cutting length of the film should be about 20m when covering, and the length should be cut according to actual needs when covering in the middle, and should not exceed 50m.
(5) After the unit layer garbage is landfilled, the rain and sewage diversion facilities should be kept intact.
(6) To control the odor in the operation area of the landfill, measures should be taken to reduce, control and cover the exposed surface of the garbage in time, close the leachate adjustment tank, increase the collection rate of landfill gas, remove the accumulated water in the factory area in time, and kill the operation surface in time and other measures.
(7) Daily temporary coverage
The landfill area that needs to be landfilled again within 7 days should be covered with 1mm thick HDPE landfill liner material or materials of equivalent strength.
Coverage time requirements: The film-laying operation team must reduce the working area to less than half of the daily operating area one hour before the end of the day. After the completion of the landfill task on the day, the on-site operating area will be fully covered on the day, and no garbage will be seen on site.
Requirements for the time of removing the film: the time for removing the film every morning should not be earlier than half an hour before the operation. The daily working area is below.
Covering technical requirements: ensure that the HDPE landfill liner materials are seamlessly lapped, the lap width is 100-120mm, and the lap joints should be lapped along the water; after the HDPE geomembrane is covered, it should be pressed with cement square bricks or automobile tires to prevent Blown away by the wind, the distance between the briquettes shall not be greater than 2000mm.
(8)Mid term coverage
For the landfill area that will not be landfilled for more than 7 days, the coverage shall be welded and lapped with HDPE landfill liner Material with a thickness of more than 1.5mm or materials of equivalent strength. After the HHDPE landfill liner Material is covered, it should be pressed with cement square bricks or car tires to prevent it from being blown away by the wind. The distance between the blocks should not be greater than 2000mm, and the plastic rope or geomembrane strips connected between the blocks should be welded and pressed on the slope. block as a stabilization measure.
Advantages
1. Using HDPE landfill liner Material to cover landfills can reduce the infiltration of rainwater and other external water into the garbage dump, and achieve the purpose of reducing landfill leachate;
2. The use of HDPE landfill liner can effectively control the emission of odor from the landfill and the organized release and collection of combustible gas from the upper part of the landfill, so as to achieve the purpose of pollution control and comprehensive utilization;
3. HDPE landfill liner Material can effectively inhibit the reproduction and spread of pathogenic bacteria and mosquitoes and flies;
4. Landfill liner Material can prevent surface runoff from being polluted, avoid the spread of garbage and its direct contact with people and animals;
5. HDPE landfill liner can effectively prevent soil erosion;
6. HDPE landfill liner Material can promote the stabilization of the garbage dump as soon as possible;
7. HDPE landfill liner Material can provide a surface that can be landscaped, provide soil for the growth of vegetation, and facilitate the reuse of landfill land.
Summarize
HDPE landfill liner Material is a waterproof barrier material based on high molecular polymer. HDPE geomembrane uses high-quality virgin resin, the main component is 97.5% high density, about 2.5% carbon black, anti-aging agent, antioxidant, ultraviolet absorber, stabilizer and other auxiliary materials.
HDPE landfill liner Material has good environmental stress cracking resistance, good chemical corrosion resistance; good chemical corrosion resistance; it has a large operating temperature range and long service life, and is widely used in biogas digesters and tailings storage sites , channel anti-seepage, dam anti-seepage subway projects, etc.
Specifications of HDPE Landfill Liner Material for Landfill Projects in Australia
- Total Quantity – 55,000 sqm
- HDPE Landfill Liner specification-1.0mm
- Roll size-7m*50m
About BPM
BPM has been specializing in delivering complete line of geosynthetics products and solutions to worldwide customers since its foundation in 2007. BPM had provided many types of effective and state of the art geomembranes, geotextiles, geocells, geosynthetic clay liners (GCLs), drainage boards, geogrids to over 81 countries. Our main customers are from Australia, France, Sweden, UK, 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.
BPM is not only manufacturing best quality geosynthetic products but also providing 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.
