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A foamed mud and permeable reactive wall using it as filler

A technology for reacting walls and mud, applied in the field of soil remediation, can solve the problems of waste, pollution, and the inability to reuse supporting materials, and achieve the effect of simplifying the foaming steps and simplifying the overall engineering operation.

Active Publication Date: 2022-08-05
BCEG ENVIRONMENTAL REMEDIATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the existing permeable reactive wall support material cannot be reused, consumes a lot of manpower and material resources, causes waste, and even pollutes, thereby providing a kind of foaming mud and using it as a filler permeable reactive wall

Method used

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  • A foamed mud and permeable reactive wall using it as filler
  • A foamed mud and permeable reactive wall using it as filler

Examples

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Embodiment 1

[0050] This embodiment provides a foaming mud, the raw materials of which are 70 kg of Portland cement, 1 kg of azobisisobutyronitrile as a foaming agent, 0.5 kg of polyoxypropylene-ethylene oxide copolyether as a cell opener, and 0.05 kg of an acrylic acid leveling agent. , Active filler 300 mesh zero-valent iron powder 5 kg, dispersant sodium metasilicate 0.05 kg, water 23.4 kg.

[0051] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 10 minutes; add water, add active filler and dispersant at the same time, and mix thoroughly for 30 minutes; add foaming agent and pore-opening agent, and quickly mix for 5 minutes ; Use a foaming machine to whip and foam, and continue to stir for 5 minutes after foaming to obtain foaming mud.

[0052] The present embodiment also provides a permeable reaction wall, using the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0053] (1) Determine the...

Embodiment 2

[0064] This embodiment provides a foaming mud, the raw materials of which are 75 kg of Portland cement, 0.5 kg of dinitrosopentamethylenetetramine as a foaming agent, 0.3 kg of polybutadiene as a cell opener, and a silicone leveling agent. 0.1 kg, active filler 300 mesh iron-carbon mixture 7 kg, dispersant sodium lauryl sulfate 0.05 kg, water 17.05 kg.

[0065] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 5 minutes; add water, add active filler and dispersant at the same time, and mix thoroughly for 25 minutes; add foaming agent and pore-opening agent, and quickly mix for 3 minutes ; Use a foaming machine to whip and foam, and continue to stir for 4 minutes after foaming to obtain foaming mud.

[0066] The present embodiment also provides a permeable reaction wall, using the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0067] (1) Determine the construction of a 40-meter-lo...

Embodiment 3

[0077] This embodiment provides a foamed mud, the raw materials of which are Portland cement 78 kg, foaming agent 4,4-oxobisbenzyl hydrazide 0.5 kg, pore opener polyethylene oxide 0.1 kg, fluorocarbon fluid Leveling agent alkanolamine salt type anionic fluorocarbon leveling agent 0.06 kg, active filler 300 mesh biochar powder 5 kg, dispersant polyacrylamide 0.1 kg, water 16.24 kg.

[0078] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 8 minutes; add water, add active filler and dispersant at the same time, and mix thoroughly for 20 minutes; add foaming agent and pore-opening agent, and quickly mix for 4 minutes ; Use a foaming machine to whip and foam, and continue to stir for 3 minutes after foaming to obtain foaming mud.

[0079] The present embodiment also provides a permeable reaction wall, using the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0080] (1) Determine the ...

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Abstract

The invention discloses a foaming mud. The raw materials include cement, foaming agent, pore-opening agent, leveling agent, active filler, dispersant and water in specific parts by weight. The present invention also provides a preparation method of the foamed mud and a permeable reaction wall using the foamed mud as a filler. The foamed mud provided by the invention can obtain porous mud after foaming, and the pores inside the wall obtained after drying and molding can connect the upstream and downstream of the wall, and by loading active fillers, the groundwater passing through the pores of the wall can be passed through. Metabolic elimination of pollutants. The invention adopts the foaming technology, and uses the foaming agent and cement to construct the wall, so that the foaming mud and the reaction wall are organically combined, and the mud for support is not used at all, and the wall is directly made into mud and transferred into the pit. , let the mud lose water and solidify directly in the pit. It is directly transformed into a wall while supporting, which simplifies the overall engineering operation, no waste mud is generated in the whole process, and no mud waste and secondary pollution are generated.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a foamed mud and a permeable reaction wall using it as a filler. Background technique [0002] The control of soil and groundwater pollution has received more and more attention. As an environmental remediation and risk control technology for soil and groundwater pollution control, the osmotic reaction wall has the advantages of low price and long service life. [0003] The filling technology of the permeable reactive wall can be divided into two categories as a whole, one is the mud support-filler settlement method; the other is the sidewall support-filler filling method. Among them, the mud support-filler settlement method needs to inject mud to support the side wall after grooving, and then use the filler to replace the space occupied by the mud. This will lead to the mud only supporting in the middle process, without any effect in the final wall, and the residual mud may hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B28/04C04B28/18C02F1/62E02D29/00E03F5/00C04B111/74C02F101/22C02F103/06
Inventor 郭丽莉李嘉晨康绍果熊静王祺刘亚茹辛成李书鹏
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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