A sanitary land fill is a waste disposal location where layers of compressed garbage is covered with layers of earth. When the facility reaches the end of its life and is full, a cap is used to close the top of site. Sanitary land fills are among the most popular methods for disposing of waste, although they have some serious disadvantages. In the US, his method for waste management was established in the 1930s, in response to growing pressures invoked by a growing population which was making more waste than ever before.
The function of a landfill is to bury the trash in such a method that it will certainly be isolated from groundwater, will be reliably kept dry and will not come in touch with air. Under these conditions, garbage will certainly not break down much. A sanitary garbage dump is not like a compost pile, where the in contrast to a landfill, the purpose is to bury garbage in such a means that it will certainly break down quickly.
The technique was introduced in England in 1912 (where it is described as controlled tipping) and includes natural anaerobic digestion produced by methane producing microorganisms. Normally the refuse is emplaced in shallow layers, compressed, and covered within 24 hours with earth or other chemically inert product, over a landfill lining membrane to form an effective seal. A tracked or special steel wheeled mobile mechanical device such as a land fill compactor is used to grade, compact, and cover the refuse.
The sanitary landfill waste disposal method often is employed to recover otherwise pointless land, i.e., to fill declivities to levels hassle-free for structure or park and other public functions.
Operating procedures at a sanitary garbage dump are decided out by considering lots of aspects, which vary from site to site. The garbage dump functional strategy prepared as a part of the design procedure acts as the primary resource document, supplying the technical details of the landfill and procedures for constructing the different engineered elements.
Since a land fill is constructed and run over number of years, it is necessary that workers continually re-read, and familiarise themselves with the strategy. This is to assure conformance with the strategy over the long term. Operating procedures must be kept in mind so that a precise record is preserved. Modifications in operating treatments commonly need regulatory agency approval, and careful planing is necessary to make a smooth transition to a revised operating plan.
The term sanitary landfill was first used in the US in the 1930s to refer to the compacting of solid waste materials. Said to have been be at first embraced by New York City and Fresno, California, the sanitary land fill method uses heavy earth-moving devices to compress waste products and then cover them with soil. The practice of covering municipal, industrial and commercial waste was evident in Greek civilization over 2,000 years earlier, but the Greeks apparently did it without compacting.
Today, the sanitary landfill is the major approach of disposing waste materials in North America and other industrialized countries, although substantial efforts are being made to discover alternative methods, such as recycling, incineration, and composting. Among the reasons that landfills continue to be a popular alternative are their simplicity and flexibility.
In order to develop environmentally friendly landfills, new sites are being engineered to recover the methane gas that is produced throughout decomposition, and some older land fills are being mined for beneficial products.