Technology for full classification recycling treatment on household waste

Abstract

The invention discloses a technology for full classification recycling treatment on household waste and relates to the field of recycling integrated utilization of household waste. A main process route of the technology comprises that household waste is homogenized by a homogenizer, is subjected to large object sorting (wherein large objects comprise large combustibles and inorganic matters), is treated by a bag breaking device (for scratching a plastic packaging bag), is treated by a magnetic separator (for separating out magnetic materials), is treated by an eddy sorting machine (for separating out nonferrous metals), is subjected to artificial sorting, then is broken, is fed into a hydrothermal degradation tank, is treated by a light material separator (for separating out papers and plastics), and then is crushed; then mixed organic matters and percolate are mixed and then are subjected to methane fermentation so that methane is produced; and methane residues and a methane liquid are prepared into an organic fertilizer and inorganic matters are prepared into a building material and the combustibles are prepared into a refuse derived fuel (RDF). The technology really realizes reduction, harmlessness and recycling of waste.

Description

technical field [0001] The invention belongs to the field of comprehensive treatment of solid waste resources, and is a process for sorting, collecting, treating and utilizing domestic waste according to different types. Background technique [0002] The garbage problem has become a problem that plagues countries all over the world. With the intensification of urbanization and the improvement of people's living standards, the amount of domestic garbage is increasing. Garbage will be a burden on urban development. Many cities in the world have been surrounded by garbage. situation. [0003] At present, the commonly used treatment methods for urban waste are: sanitary landfill, incineration, and composting. These three treatment methods have their limitations and are likely to cause secondary pollution. Based on the principle of "clean and pollution-free", fully recycle the resources and energy in the garbage, and reduce the amount of garbage disposal. [0004] At present, t...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used treatment methods for urban waste are: sanitary landfill, incineration, and composting. These three treatment methods have their limitations and are likely to cause secondary pollution. Based on the principle of "clean and pollution-free", fully recycle the resources and energy in the garbage, and reduce the amount of garbage disposal

[0004] At present, the most prominent problems of the domestic waste treatment process are poor sorting effect, low utilization of organic matter, large amount of backfill, and high operating cost

However, screening equipment such as drum screens and vibrating screens, which are commonly used at home and abroad, can only be sorted according to the size and particle size of garbage, but there are many problems in the treatment of garbage with complex components and mixed storage.

In addition, because the moisture content of domestic waste varies greatly in different seasons and regions, when the moisture content is high, the meshes of the above-mentioned equipment are easily blocked and cannot work normally.

Images