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Process for recycling incineration ash of hazardous wastes

A technology for incineration of ash and hazardous waste, applied in the field of resource treatment, can solve problems such as burning and explosion accidents, difficulty in recovery, human and animal poisoning, etc., and achieve the effects of saving treatment costs, good typicality and demonstration, and good social benefits

Active Publication Date: 2013-06-05
NANTONG HANTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hazards of hazardous waste are long-term and latent. Once the hazards break out, they will not only poison humans and animals, cause combustion and explosion accidents, but also pollute the atmosphere due to uncontrolled incineration, wind, sublimation, and weathering. It can infiltrate and pollute soil and groundwater through rain and snow, and pollute rivers, lakes and seas by surface runoff, thus causing long-term and difficult-to-recover hidden dangers and consequences

Method used

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  • Process for recycling incineration ash of hazardous wastes
  • Process for recycling incineration ash of hazardous wastes
  • Process for recycling incineration ash of hazardous wastes

Examples

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Embodiment Construction

[0028] Adopt resource treatment process of the present invention to process the hazardous waste incineration ash of a certain factory, specifically as follows:

[0029] 1. Source resources:

[0030] The hazardous waste incineration ash that has been air-dried and crushed and passed through a 100-mesh standard sieve is subjected to magnetic separation with magnetic separation equipment. The magnetic separation data and effects are shown in Tables 1-3:

[0031] Table 1 Masses of magnetically separated and non-magnetically separated residue samples after roughing

[0032]

[0033]

[0034] The magnetically separated and non-magnetically separated samples after the above-mentioned magnetic separation are digested respectively, and the digestion method is as follows:

[0035] Accurately weigh 0.5000g sample into a 25ml polytetrafluoroethylene crucible, moisten it with a little water, add 10ml hydrochloric acid, heat (lower temperature) on an electric heating plate in the fum...

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Abstract

The invention discloses a process for recycling incineration ash of hazardous wastes, which comprises the steps of: source recycling, lixiviating-recycling and stabilizing / curing and specifically comprises the following steps of: carrying out magnetic separation on the incineration ash of the hazardous wastes by using a magnetic separation device, separating out magnetically-separated matters andnon-magnetically-separated matters, recycling the magnetically-separated matters, lixiviating the non-magnetically-separated matters by using a lixiviating agent and filtering, stabilizing with a stabilizing agent, curing with cement, and preparing a cured body which accords with the national standard and can be safely buried. The process is simple, flexible, safe and environmental-friendly, and has better typicality and demonstration in the field of the hazardous wastes after engineering application of the hazardous wastes and better social benefit, and can play a role in guiding and demonstrating the treatment of the hazardous wastes and the improvement of circular economy mode in similar enterprises in China.

Description

technical field [0001] This patent relates to the field of resource treatment, in particular to a process for harmless resource treatment of hazardous waste incineration ash. Background technique [0002] With the rapid development of economic globalization and industry, the hazardous waste discharged in the process of human production and life is increasing day by day. It is estimated that 330 million tons of hazardous waste are generated worldwide every year. The generation of hazardous waste in my country is also showing a rapid growth trend year by year. In 2000, the annual output of hazardous waste in my country was about 8.3 million tons, and in 2003 it reached 11.7 million tons. It is estimated that by 2010, the generation of hazardous waste in my country will reach 26.86 million tons, of which In 2010, the amount of hazardous waste generated in Zhejiang Province was 477,900 tons, and it is estimated that by 2010, about 600,000 tons of hazardous waste will be generate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 邓友华沈东升宋二喜张弛廖燕汪美贞冯华军
Owner NANTONG HANTAI CHEM
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