Harmless and comprehensive treatment method for domestic waste

Abstract

The invention discloses a household garbage complete recycling harmless comprehensive processing method. During the household garbage processing process, the technology is divided into three technology processes, namely a fine sorting process, a high value regenerating and utilizing process, and a three wastes harmless disposal process; the first step is a multi-grade fine sorting process: the household garbage is divided into five recyclable categories: inorganic substance, waste metal and glass, kitchen garbage, plastics, and combustible garbage; the second step is a high value regenerating and utilizing process: established are four regeneration production modules namely a brick manufacturing module, a module for converting organic substances into fertilizer, a wood and plastic product production module, and a garbage derivated fuel RDF production module, the household garbage is completely converted into a series of technical products such as novel fertilizer, energy, materials, and the like; the third step is a three wastes harmless disposal process: a module for converting residual solid wastes into energy, a module for processing technology wastewater without discharging, and a module that can make the waste gas reach the discharge standard, are established to achieve the goal that household garbage is completely converted into resources and harmlessly disposed. The method can harmlessly reduce the garbage weight and convert the garbage into resources.

Description

technical field [0001] The invention relates to a method for harmless weight reduction and resourceful treatment of domestic garbage, which belongs to the technical field of urban garbage treatment. Background technique [0002] With the rapid development of the global economy and industrialization, the scale of cities continues to expand. By 2009, China's urbanization rate reached 46.6%. twice as much. At the same time, the total amount of municipal solid waste is also increasing day by day, and the composition of municipal solid waste is also becoming more and more complex. According to statistics, the annual growth rate of garbage in the world is 8.42%, while the annual growth rate of garbage in China is more than 10%, which is one of the countries facing the greatest threat of garbage. In the 1980s, China's annual garbage output was 115 million tons, and in the 1990s it reached 143 million tons. By 2005, the world's annual municipal waste was 490 million tons, and Chi...

AI Technical Summary

Problems solved by technology

Studies have shown that the waste incineration method can only use 15%-20% of the energy calorific value contained in municipal waste, and a considerable part of the valuable resources in domestic waste is emitted as waste gas during incineration, which leads to The carbon emission generated by waste incineration is as high as 0.561 tons of CO2 / ton, which has brought negative impact on the environment

[0020] In view of the various deficiencies and application limitations of the most common garbage disposal methods in various countries in the world, the present invention provides a method and an ecological industrial chain for the full-resource harmless reduction treatment of household garbage

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