Method for sorting and comprehensively using urban mixed garbage

Abstract

The invention discloses a method for sorting and comprehensively using urban mixed garbage. The method comprises the following steps: 1) allowing the urban mixed garbage to enter a feed bin through a feeding hole, discharging, and introducing into crushing and bag breaking equipment; 2) breaking garbage bags and crushing block garbage by using the crushing and bag breaking equipment; 3) feeding the garbage subjected to crushing and bag breaking into a two-stage rotary screen, screening out dust of which the grain size is less than 3mm, and picking out strip substances; and 4) feeding the mixed garbage into a vibration screen, separating inorganic cakes, large-sheet plastics and paper from an oversize material by using a heavy winnowing machine, and winnowing heavy substances, light substances and intermediate substances from an undersized material in a double-wind chamber multifunctional winnowing machine. Sorting equipment is effectively combined, so that the mixed garbage is efficiently sorted and recycled; and the sorted paper and textiles, plastics and kitchen organics are respectively used for preparing garbage derived fuel, plastic wood and fertilizers.

Description

technical field [0001] The present invention relates to the field of urban domestic waste treatment, in particular to a method for sorting and comprehensively utilizing urban mixed waste, in particular using mechanical methods to efficiently sort out different components of waste, such as organic matter, magnetic substances, plastics, fabrics, etc., and then aiming at Different sorted substances are used in different resource utilization methods to realize waste reduction, harmlessness, and resource utilization. technical background [0002] With the rapid development of the country's economy, the amount of municipal solid waste has increased dramatically. In 2010, the national municipal solid waste removal volume reached 150 million tons, and the landfill and storage of waste occupied more than 800,000 mu of land. Two-thirds of the large and medium-sized cities in the country were surrounded by waste, and one-fourth of the cities had no suitable facilities. It is difficult...

AI Technical Summary

Problems solved by technology

However, the vast majority of design institutes and sorting manufacturers do not have enough understanding of the difficulty of sorting domestic waste in my country, and there are very few studies on the impact of variability in waste components and the optimization of operating parameters for sorting equipment and systems. The operation of the sorting system is difficult (most of the completed projects are out of service), and the actual operation of the equipment is difficult to meet the design requirements

[0012] Fourth, the current research on recycling methods of garbage sorting products is insufficient, and the economic value of sorting products has not been fully reflected

At present, the existing garbage sorting technologies in China fail to effectively combine the recycling technology of sorting products with the sorting process, and the overall economic efficiency of sorting, recycling, and reuse is not high

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