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Foaming mud and permeable reactive barrier using same as filler

A reactive wall and mud technology, applied in the field of soil restoration, can solve the problems of pollution, waste, and failure of secondary use of support materials, etc., and achieve the effect of simplifying the overall engineering operation and simplifying the foaming steps

Active Publication Date: 2022-04-08
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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  • Foaming mud and permeable reactive barrier using same as filler
  • Foaming mud and permeable reactive barrier using same as filler
  • Foaming mud and permeable reactive barrier using same as filler

Examples

Experimental program
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Effect test

Embodiment 1

[0044] This embodiment provides a kind of foaming mud, and its raw material is portland cement 70kg, foaming agent azobisisobutyronitrile 1kg, opening agent polyoxypropylene-oxyethylene copolyether 0.5kg, acrylic acid leveling agent 0.05kg , active filler 300 mesh zero-valent iron powder 5kg, dispersant sodium metasilicate 0.05kg, water 23.4kg.

[0045] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 10 minutes; add active filler and dispersant to water, and mix thoroughly for 30 minutes; add foaming agent and cell opener, 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.

[0046] This embodiment also provides a permeable reaction wall, which uses the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0047] (1) Determine the construction of a 30-meter-long, 8-meter-deep permeable reaction...

Embodiment 2

[0058] This embodiment provides a kind of foaming mud, and its raw material is Portland cement 75kg, blowing agent dinitrosopentamethylenetetramine 0.5kg, cell opening agent polybutadiene 0.3kg, organosilicon leveling agent 0.1kg, active filler 300 mesh iron-carbon mixture 7kg, dispersant sodium lauryl sulfate 0.05kg, water 17.05kg.

[0059] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 5 minutes; add active filler and dispersant to water, and mix thoroughly for 25 minutes; add foaming agent and cell opener, 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.

[0060] This embodiment also provides a permeable reaction wall, which uses the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0061] (1) Determine to build a 40-meter-long, 7-meter-deep permeable reaction wall, which is divided ...

Embodiment 3

[0071] This embodiment provides a kind of foaming mud, and its raw material is portland cement 78kg, blowing agent 4,4-oxo bis sulfonyl hydrazide 0.5kg, cell opening agent polyethylene oxide 0.1kg, fluorocarbon compound fluid Leveling agent Alcohol amine salt type anionic fluorocarbon leveling agent 0.06kg, active filler 300 mesh biochar powder 5kg, dispersant polyacrylamide 0.1kg, water 16.24kg.

[0072] The preparation method is as follows: mix cement and leveling agent powder first, and stir for 8 minutes; add active filler and dispersant to water, and mix thoroughly for 20 minutes; add foaming agent and cell opener, 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 a foaming slurry.

[0073] This embodiment also provides a permeable reaction wall, which uses the above-mentioned foamed mud as a raw material, and its specific construction method is as follows:

[0074] (1) Determine the constru...

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Abstract

The invention discloses foaming mud, which is prepared from the following raw materials in specific parts by weight: cement, a foaming agent, a pore opening agent, a flatting agent, an active filler, a dispersing agent and water. The invention also provides a preparation method of the foaming mud and a permeable reactive barrier using the foaming mud as a filler. Porous mud can be obtained after foaming of the foaming mud, pore channels in a wall body obtained after drying and molding can be communicated with the upstream and the downstream of the wall body, and pollutants in underground water in the pore channels of the wall body can be metabolized and eliminated by loading the active filler. According to the invention, a foaming technology is adopted, and a method for constructing a wall body by using a foaming agent and cement is adopted, so that foaming slurry and a reaction wall are organically combined, the wall body is directly prepared into slurry and transferred into a pit slot without using slurry for supporting at all, and the slurry is directly dehydrated and cured in the pit slot. The wall body is directly converted while supporting is achieved, the whole engineering operation is simplified, no waste slurry is generated in the whole process, and waste of the slurry and secondary pollution are avoided.

Description

technical field [0001] The invention relates to the field of soil restoration, in particular to a foaming mud and a permeable reaction wall using it as 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 permeable reactive wall has the advantages of low price and long service life. [0003] The filling technology of the permeable reactive wall can be generally divided into two categories, one is the mud support-filler settlement method; the other is the side wall support-filler filling method. Among them, the mud support-filler settlement method needs to inject mud support to the side wall after slotting, and then use the filler to replace the space occupied by the mud. And this will cause the mud to only support in the middle process and have no effect in the final wall, and the residual mud may h...

Claims

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Application Information

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Patent Type & Authority Applications(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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