Resourceful cyclic utilization technology for household and building rubbish

Abstract

The invention discloses a resourceful cyclic utilization technology for household and building rubbish. The technology comprises the steps that firstly, the rubbish is fermented, percolate treatment is conducted, the rubbish is conveyed into a pyrolysis gasifier, and methane is used for supporting combustion; secondly, the rubbish is combusted, and coke residues are stored and left for use; thirdly, high-temperature smoke is subjected to heat absorbing and recycled to be guided into a tunnel kiln for air drying of sintered green bricks; fourthly, the coke residues and fly ash are conveyed to the tunnel kiln for brick sintering; fifthly, recycled water and process cooling water are used for green brick manufacturing and stirring, and high-temperature steam is used for power generation; sixthly, the building rubbish is roughly broken, impurity removing is conducted, secondary fine breaking is conducted, impurity removing is conducted, and recycled aggregate is screened and used; seventhly, the recycled aggregate with the particle size being 3 mm-10 mm is used for manufacturing hollow blocks; and eighthly, recycled fine powder with the particle size being smaller than 3 mm is used for brick sintering. The resourceful cyclic utilization technology has the beneficial effects that the household rubbish, the building rubbish and the brick sintering technology are organically combined, waste water reaching the standard, the coke residues, the fly ash, the high-temperature smoke, steam and generated electricity are utilized in rubbish treatment and brick sintering, the rubbish is thoroughly utilized, secondary pollution is eliminated, the household rubbish and the building rubbish are cyclically utilized, and waste is turned into wealth.

Description

technical field [0001] The invention relates to a waste treatment and recycling process, in particular to a resource recycling process for domestic and construction waste. Background technique [0002] At present, with the continuous acceleration of my country's urbanization process, more and more cities are suffering from "garbage siege" on the one hand, and are also facing the dilemma of "no land to bury" on the other hand. As a resource-based and harmless urban waste treatment method that saves land resources and is highly resource-saving, it has also been misunderstood and controversial. The reason is that the current urban domestic waste resource treatment method in my country-waste incineration has a bright future, but there are still a large amount of waste. Without thorough treatment, such as: incinerated slag, hazardous waste fly ash, leachate treated wastewater, etc. still need to be landfilled, and the treated flue gas still needs to be discharged into the air. Th...

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Problems solved by technology

[0005] Due to the adoption of the above-mentioned technical scheme, the present invention has the following advantages: the present invention comprehensively, organically and creatively combines the domestic waste treatment process, construction waste treatment process and tunnel kiln sintered porous brick production process, and incinerates domestic waste to generate electricity The standard waste water from waste treatment, coke slag and fly ash after waste incineration, high-temperature flue gas after treatment, steam after power generation, and electricity generated are fully utilized in construction waste treatment and tunnel kiln sintered porous brick production lines. Thoroughly "eat and squeeze out" domestic waste and construction waste, which not only eradicates the secondary pollution caused by waste disposal to the environment, but also recycles the troublesome domestic waste and construction waste, turning waste into treasure, Achieve sustainable recycling, carry out secondary high-temperature sintering of all hazardous waste, fully utilize waste water and waste gas, eliminate secondary pollution, and almost achieve "zero discharge" of waste discharge, which is very important for solving environmental pollution problems and recycling resources Utilizing problems is a pioneering and revolutionary invention

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