What is the purpose of a liner in a landfill?
Because the garbage in the landfill is piled outside for a long time, it is easy to breed mosquitoes and flies, spread germs, and produce odor. Garbage is piled outside for a long time. Due to rain and other factors, there is running water. The garbage is wet and decomposes sewage leachate. The sewage causes pollution and great harm to the surrounding environment and residents. The main functions of the landfill closure treatment are: firstly, to reduce the destruction of garbage to the environment and reduce the decomposition of sewage leachate; secondly, to effectively control the gas generated by the garbage; finally, to isolate the garbage from livestock and people, So that the garbage will not cause serious harm to the surroundings.
In order to effectively accelerate the speed of decomposition, and at the same time, to prevent a large amount of garbage and environmental pollution, people will use geomembrane to cover the landfill. People use this material to effectively prevent a large amount of garbage, environmental pollution, and air. Pollution can also effectively accelerate the rate of decomposition, so we can see that the person in charge of the landfill will regularly purchase this material because this material plays a very important role in the decomposition of garbage and environmental protection. The landfill realizes the isolation of garbage from the surrounding environment. There are two ways to bury garbage: dumping-dig an open pit on the ground and bury the garbage in the pit. 2. Landfill-build well-designed facilities underground or on the ground to isolate garbage from the surrounding environment (groundwater, air, and rainwater). This isolation is achieved through the bottom liner and daily soil cover. Municipal solid waste landfill-a synthetic (plastic) liner isolates the waste from the environment. The purpose of landfills is to bury the waste, keep it away from the groundwater, keep it dry and not contact with the air. Under such conditions, the garbage will not decompose in a large amount.
The realization of anti-seepage, isolation, and anti-seepage materials is very important. The geotextile layer, non-woven geotextile, HDPE film, plastic blind ditch, etc. produced by Dajin can help realize the anti-seepage and anti-isolation effect of landfills. The leachate treatment system in the construction of the domestic waste landfill is the key to the success of the waste landfill technology, and it is directly related to the pollution degree of the nearby surface water.
The Anti-seepage at the bottom of the landfill. In order to prevent landfill leachate from polluting the groundwater, effective anti-seepage measures must be taken at the bottom of the landfill. In the past, a layer of anti-seepage material was laid at the bottom of the landfill, mainly including clay, asphalt, HDPE geomembrane, geotextile, plastic blind ditch, and other synthetic rubber. In recent years, foreign countries have begun to use synthetic anti-seepage layers, and some have adopted double anti-seepage layers, the effect is obviously better than the former. Each landfill can take corresponding anti-seepage measures according to the specific engineering and hydrogeological conditions. The landfill can isolate the garbage and protect the environment. The waste liquid can be reused after the landfill. The upper part of the landfill can also be greened and coordinated with humans. The relationship with the environment guarantees the sustainable development of the economy and society.