Study On Design Principle And Scheme Of Municipal Solid Waste Landfill

With the fast development of our country's economy and the unceasing enhancement of the urbanized level, the domestic waste increases day by day, but we lack of domestic waste disposal facilities. So far the landfill is still the main form of waste disposal, and most landfills that have been completed do not meet the construction standards, which cause the serious impact and potential harm on the soil, rivers, groundwater, air and so on. Because of the complexity of the composition, the instability of the landfill and the serious pollution of landfill and gas,and caused as a result of landfill engineering geology, hydrogeology and impermeable complex engineering problems, thus it is necessary for the anti-landfill infiltration, landfill gas derivative row, leachate treatment, such as study design principles and on the basis of reasonable methods of engineering design.Rational planning and landfill site is the first step in the construction process, and also the most crucial step, the article through the analysis of economic and technical, considering the safety and environmental factors, gives the landfill site selection standards.The anti-seepage of landfill design is a key element, including at the top, bottom and lateral seepage. In this paper, based on the engineering practice, combined with the local hydro-geological and engineering geological conditions, a reasonable choice is the anti-design, and low permeability geomembrane layer of impermeable liner over the composition of complex a single layer of impermeable material has obvious advantages; and curtain grouting technology in the old landfill in the role of anti-seepage treatment.Landfill gas is a clean energy and rational collect and use of landfill gas will not only reduce environmental pollution, but also produce good economic results; Landfill leachate is a complex high-strength wastewater. Through the analysis of the characteristic and the change of landfill leachate, gives the reasonable and impermeable leachate treatment process.Leachate recirculation is good to depurate the landfill leachate,prolong the useful life of the langfills and improve the safety of the landfills.By the analysis to the conditions of Yu Lin City such as climate, engineering geology, giving a design plan of the landfill of economic development zone in Yu Lin City.