Fly Ash Solidification and Stabilization Method

A fly ash solidification and fly ash technology, which is applied in the field of fly ash solidification and stabilization, can solve problems such as poor solidification effect of heavy metals, carbon dioxide gas emissions, and difficulty in finding chemical agents, so as to ensure long-term stability, reduce leaching concentration, The effect of solving environmental safety hazards
CN104759454BInactive Publication Date: 2016-07-27CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE RES ACAD OF ENVIRONMENTAL SCI
Publication Date
2016-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a fly ash solidification and stabilization method, which comprises a first pulping procedure, a stirring procedure, a digestive treatment procedure, a crushing treatment procedure, a mixture preparation procedure, a second pulping procedure and a conserving procedure. According to the fly ash solidification and stabilization method provided by the invention, dechlorinating and heavy metal solidification and stabilization treatment can be simultaneously carried out on fly ashes as hazardous wastes; and the generated product can also be applied to production of building materials, and is mainly used as aggregate of concrete and ceramsite for the building materials.
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Description

technical field

[0001] The invention relates to hazardous waste treatment technology, in particular to a method for solidifying and stabilizing fly ash, which can simultaneously perform dechlorination and solidify and stabilize heavy metals for fly ash. Background technique

[0002] Landfill is the main treatment method for domestic waste in my country. However, due to the continuous growth of domestic waste production, landfill is gradually difficult to meet the growing processing requirements, and a series of municipal and environmental problems such as "garbage siege" have arisen.

[0003] Incineration technology can relieve the pressure of domestic waste treatment and complete the reduction of domestic waste. Waste incineration power generation technology can also complete the recycling of waste. In 2010, there were 104 waste incineration plants in China, with a processing capacity of 23.17 million tons, accounting for 18.2% of the amount of harmless garbage. According ...

Claims

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