Method for large-scale cooperative disposal of aging household garbage in landfill through cement kiln

Abstract

The invention discloses a method for large-scale cooperative disposal of aging household garbage in a landfill through a cement kiln, belongs to the field of resource and environment protection and particularly relates to garbage disposal special for municipal solid waste landfills. The method sequentially comprises the following steps of coarse crushing, grain-size sorting, gravity grain-size sorting, gas-solid mixture disposal, heavy material disposal and light material disposal. The method is a garbage disposal method which solves the contradiction between occupation and pollution by the municipal refuse landfills and the demands for the landfills due to day-by-day increases of municipal solid waste, achieves large-scale disposal of the garbage, and does not affect production of a dry method cement plant.

Description

technical field [0001] The invention belongs to the field of resources and environmental protection, and in particular relates to waste disposal, especially waste disposal in urban domestic waste landfills. Background technique [0002] With the development of the economy, the improvement of people's living standards and the implementation of the accelerated urbanization process, the generation of urban domestic waste is increasing day by day, which has brought huge pressure to urban environmental protection. However, sanitary landfill is still the main method of urban domestic waste disposal at present, which increases the load of urban domestic waste landfills and gradually shortens their service life, and the search for new urban domestic waste landfills requires land occupation and consideration of the surrounding environment and environment. Terrain, etc., make the site selection of the landfill very difficult, and at the same time, a large amount of money must be inves...

AI Technical Summary

Problems solved by technology

[0005] Some existing new treatment methods, such as using cement plants to incinerate waste to make cement, this scheme seems simple and theoretically feasible, but the difficulty of this technology lies in how to realize large-scale waste treatment without affecting the efficiency of the cement plant. Production

If the garbage is directly put into the cement plant to incinerate cement without sorting, the inventors have found that it is actually impossible to achieve, which will seriously affect the normal production and product quality of the cement plant, resulting in the failure of production

After fully sorting the different components of the garbage (such as sorting out recyclable components such as paper, plastics, and metals in advance), only the part that is conducive to cement production is kept and put into the cement plant for incineration. Although it solves the problem of cement plant production However, it makes the sorting process too complicated and inefficient, and even has to resort to manual sorting, especially because of the high content of non-combustible components in aged waste, it is basically discarded, so that the waste cannot be completely disposed of , and even completely lose the feasibility of industrialized large-scale and high-efficiency waste disposal

Moreover, these existing methods often only mix a small amount of fresh garbage into cement raw materials to calcine cement, and the processing scale is small, which is far from meeting the needs of actual municipal solid waste treatment.

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