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Sealing process and sealing structure for dangerous solid waste

A hazardous solid and waste technology, which is applied in the field of hazardous solid waste sealing technology and its sealing structure, can solve the problems of difficult-to-handle waste residue and low comprehensive utilization rate, and achieve good closure, pollution isolation, and excellent The effect of the function

Active Publication Date: 2021-08-31
河南华泰新材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material includes 15% to 40% of slag, 20% to 45% of steel slag, 5% to 15% of desulfurization ash, and 15% to 40% of calcium phosphate slag in terms of mass percentage. The raw materials are all from industrial waste slag, desulfurization ash and calcium phosphate The slag is difficult to handle, and the comprehensive utilization rate is low

Method used

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  • Sealing process and sealing structure for dangerous solid waste
  • Sealing process and sealing structure for dangerous solid waste
  • Sealing process and sealing structure for dangerous solid waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A sealing process for hazardous solid waste, comprising the steps of:

[0042] Step S1: providing a sealing site 1, pouring 8-10 cm foam concrete on the surface of the sealing site 1 to form a first foam concrete layer 2;

[0043] Step S2: Provide the following raw materials: hazardous solid waste, gelling material, water and foaming agent, prepare the hazardous solid waste, gelling material, water and foaming agent into slurry, and cast in-situ to obtain discontinuous The foam concrete block 3 is sealed once;

[0044] Step S3: pouring 5-10 cm of foam concrete around the foam concrete block 3 and its top to form a second foam concrete layer 4, and the first foam concrete layer 2 is connected to the second foam concrete layer 4 The foam concrete block 3 is subjected to secondary sealing.

[0045] Wherein, the first foamed concrete layer 2 and the second foamed concrete layer 4 are both cast-in-place by conventional foamed concrete, and the foamed concrete does not cont...

Embodiment 2

[0049] This embodiment provides a sealing process for hazardous solid waste, which is different from Embodiment 1 in that:

[0050] The parts by weight of the hazardous solid waste, gelling material, water and foaming agent are: 400 parts, 120 parts, 150 parts and 3 parts in sequence.

[0051] Specifically, the hazardous solid waste is red mud; the cementitious material is cement; and the foaming agent is HTW-1 vegetable protein composite foaming agent.

Embodiment 3

[0053] This embodiment provides a sealing process for hazardous solid waste, which is different from Embodiment 1 in that:

[0054] Both the first foam concrete layer 2 and the second foam concrete layer 4 are formed by cast-in-place foam concrete, and the foam concrete does not contain hazardous solid waste. .

[0055] The parts by weight of the hazardous solid waste, gelling material, water and foaming agent are: 700 parts, 250 parts, 200 parts and 4 parts in sequence.

[0056] Specifically, the hazardous solid waste is red mud; the cementitious material is cement; and the foaming agent is HTW-1 vegetable protein composite foaming agent.

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PUM

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Abstract

The invention provides a sealing process and sealing structure for dangerous solid waste, and belongs to the technical field of dangerous solid waste treatment. The sealing process comprises the following steps that 1, a sealing site is provided, and 8-10cm foam concrete is cast on the surface of the sealing site in situ to form a first foam concrete layer; 2, the following raw materials including the dangerous solid waste, a cementing material, water and a foaming agent are provided, slurry is prepared from the dangerous solid waste, the cementing material, the water and the foaming agent, cast-in-place is preformed to obtain discontinuous foam concrete blocks, and primary sealing is performed; and 3, the 5-10 cm foam concrete is cast in situ on the periphery and the upper portion of the foam concrete blocks to form a second foam concrete layer, and the first foam concrete layer and the second foam concrete layer are connected to conduct secondary sealing on the foam concrete blocks. The dangerous solid waste is converted into foam concrete by utilizing a foam concrete production process, and a pore structure is optimized and adjusted through components, so that a water passing channel is blocked to the greatest extent, and pollution of the dangerous solid waste to underground water is reduced.

Description

technical field [0001] The invention belongs to the technical field of hazardous solid waste treatment, and in particular relates to a sealing process of hazardous solid waste and a sealing structure thereof. Background technique [0002] Hazardous solid waste, also known as hazardous waste, toxic waste residue, etc., usually refers to solid waste with one or more hazardous characteristics such as toxicity, corrosiveness, flammability, reactivity, and infectivity. If this kind of waste is not treated, it will be piled up in nature for a long time, which will not only pollute the atmospheric environment, but also have a great impact on water conservancy and geology. However, due to the uncertain hazards of hazardous solid waste, it is also harmful if people come into direct contact with it during the treatment process. Therefore, how to do a good job of harmless disposal of hazardous solid waste and solve the adverse impact on the environment is particularly important. [0...

Claims

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Application Information

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IPC IPC(8): B09B3/00C04B28/02C04B111/40
CPCC04B28/02C04B2111/00767C04B2111/40B09B3/25C04B24/14C04B18/0409C04B38/10
Inventor 张建华华振贵许言言范志广孙根生
Owner 河南华泰新材科技股份有限公司