Innocent treatment process of domestic garbage

A technology for harmless treatment and domestic waste, applied in the direction of machines/engines, solid waste removal, gas turbine devices, etc., can solve the problems of low rate of combustible mixed gas, generation of toxic and harmful gases, increased operating costs, etc., to eliminate secondary Secondary pollution, zero discharge and elimination of ammonia nitrogen

Active Publication Date: 2014-07-23
CHENGDU BRANCH TIBET GUOCE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Incineration power generation is a good waste resource treatment method in theory, but domestic waste in China is mixed waste, which contains a large amount of kitchen waste, and the water content of waste is as high as 50%. The calorific value of direct incineration of waste is very low. Generally around 1000 kcal, and the process of waste incineration needs to consume a lot of other energy such as oil, coal, etc., and the energy recovery rate is less than 50%. In the process of waste incineration, due to the low calorific value of waste and low furnace temperature, the incineration process is easy to produce Toxic and harmful gases such as dioxin, etc., so waste incineration power generation methods cannot be simply used for mixed domestic waste treatment
But this method also has the following disadvantages: such as the reinforcement of chlorine agent, sulfur fixation agent, and combustion accelerant, the gasification and combustion treatment is carried out in the melting gasification combustion furnace, which increases the operating cost, and the rate of combustible mixed gas produced is relatively low. Low recovery rate

Method used

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Effect test

Embodiment 1

[0033] The invention relates to a harmless treatment process of domestic waste. After the domestic waste is processed through physicalization, micro-nano oxygen bubble degradation, pyrolysis gasification and gas recycling, zero discharge of domestic waste is realized.

[0034] In the physical and chemical step, the metal components and hazardous waste in the garbage are separated by garbage magnetic separation to obtain organic components, and the organic components are dehydrated by extrusion to obtain sewage and dry matter with a moisture content of 25%.

[0035] In the micro-nano oxygen bubble degradation step, the micro-nano bubbles converted from ozone are injected into the sewage, and the dissolution time in the sewage is 40 minutes, so that the organic matter in the sewage is oxidized and degraded, and part of the ammonia nitrogen is simultaneously oxidized and reduced to release nitrogen. , and then after filtration and heavy metal filtration, the organic nutrient solut...

Embodiment 2

[0044] This embodiment is basically the same as the above-mentioned embodiment, the main difference is:

[0045] In the physical and chemical step, the metal components and hazardous waste in the garbage are separated by garbage magnetic separation to obtain organic components, and the organic components are dehydrated by extrusion to obtain sewage and dry matter with a moisture content of 30%.

[0046] In the micro-nano oxygen bubble degradation step, the micro-nano bubbles transformed from ozone are injected into the sewage, and the dissolution time in the sewage is 50 minutes, so that the organic matter in the sewage is oxidized and degraded, and part of the ammonia nitrogen is simultaneously oxidized and reduced to release nitrogen. , and then after filtration and heavy metal filtration, the organic nutrient solution is obtained.

[0047] Before pyrolysis and gasification, the dry matter is dried with waste heat to remove the remaining moisture to obtain a dry matter with ...

Embodiment 3

[0051] This embodiment is basically the same as the above-mentioned embodiment, the main difference is:

[0052] In the physical and chemical step, the metal components and hazardous waste in the garbage are separated by garbage magnetic separation to obtain organic components, and the organic components are dehydrated by extrusion to obtain sewage and dry matter with a moisture content of 28%.

[0053] In the micro-nano oxygen bubble degradation step, the micro-nano bubbles converted from ozone are injected into the sewage, and the dissolution time in the sewage is 60 minutes, so that the organic matter in the sewage is oxidized and degraded, and part of the ammonia nitrogen is simultaneously oxidized and reduced to release nitrogen. , and then after filtration and heavy metal filtration, the organic nutrient solution is obtained.

[0054] Before pyrolysis and gasification, the dry matter is dried with waste heat to remove the remaining moisture to obtain a dry matter with a ...

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Abstract

The invention discloses an innocent treatment process of domestic garbage. The process includes the following steps objectifying the domestic garbage, micro-nanometer oxygen bubble degrading, pyrolysis gasifying and recycling fuel gas to achieve zero emission of the domestic garbage. The innocent treatment process can effectively conduct innocent treatment and recycling on the domestic garbage, recycles energy in the garbage to the largest extent, achieves innocent treatment of the garbage, removes secondary pollution in the garbage treating process and achieves zero emission of the garbage treatment.

Description

technical field [0001] The invention belongs to the field of municipal solid waste treatment, and in particular relates to the technology of domestic solid waste degradation treatment and pyrolysis gasification power generation. Background technique [0002] At present, domestic waste treatment is mainly based on incineration power generation and landfill. Landfill is a waste disposal method with serious pollution. It covers a large area and wastes land resources seriously. Landfill leachate causes serious pollution to the surrounding water environment and land environment. Incineration power generation technology, such as Chinese Patent No. "03114627.9", discloses a comprehensive treatment technology that can effectively deal with municipal solid waste. The disclosure date is October 13, 2004. The superimposed high-temperature multi-chamber is used as the incineration equipment, and the sorted combustible municipal solid waste is used as the parent fuel, and some combustion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00F02C6/00
Inventor 张培君陈鸿
Owner CHENGDU BRANCH TIBET GUOCE ENVIRONMENTAL PROTECTION TECH
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