Biological filling permeable reactive barrier and construction method thereof

A construction method and reaction wall technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of no monitoring facilities, failure, poor coverage of circulation pipelines, etc. Achieve the effects of shortening the construction period, strengthening the gas export function, and reducing construction costs

Pending Publication Date: 2022-04-12
BCEG ENVIRONMENTAL REMEDIATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the large amount of biological glue used in the permeable reaction wall in the prior art, the poor coverage of the circulation pipeline, no secondary utilization value, and the interception and treatment of pollutants as the operating time increases. Capability will decline or even fail, there are no monitoring facilities and other defects, so as to provide a bio-filled permeable reaction wall and its construction method

Method used

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  • Biological filling permeable reactive barrier and construction method thereof
  • Biological filling permeable reactive barrier and construction method thereof
  • Biological filling permeable reactive barrier and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] like Figure 8 Shown is a bio-filled permeable reaction wall provided in this embodiment, including: a holding tank 1 , an active filler 2 disposed in the holding tank 1 , a circulation air duct 3 and an isolation cover 5 .

[0044] The holding tank 1 is filled with active filler 2 . The circulation air guide pipe 3 is embedded in the active filler 2 , and multiple groups of the circulation air guide pipe 3 are arranged at intervals along the length direction of the storage tank 1 . The isolation cover 5 is arranged on the upper side of the active filler 2 , and the circulation air duct 3 is arranged through the isolation cover 5 .

[0045] The circulating air guiding pipe 3 is provided with a plurality of circulating air guiding branch pipes 4 at intervals along the axial direction. . The circulation air guiding branch pipe is arranged with an inclination downward. A one-way ventilation pipe 6 is also provided through the isolation cover 5 , and the one-way ventila...

Embodiment 2

[0049] like Figure 1 to Figure 8 Shown is a construction method of a bio-filled permeable reaction wall provided in this embodiment, which is used to construct the bio-filled permeable reaction wall described in Example 1, and the bio-filled permeable reaction wall is constructed in sections, each section 5 -8m, the construction method of the reaction wall includes the following steps:

[0050] Before construction, first determine the interval range and construction location of each section of the reaction wall. In order to improve the verticality of the storage pool 1, the tilting of the storage pool 1 after excavation is avoided. like figure 2 As shown, before excavating the storage pool 1, a guide groove 8 is installed at the position where the wall is built. like image 3 As shown, the ground where the wall is built is excavated to form a holding pool 1, and biopolymer mud 7 is continuously injected into the holding pool 1 during the excavation process. To support t...

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Abstract

The invention relates to the technical field of soil and groundwater pollution treatment, in particular to a biological filling permeable reactive barrier and a construction method thereof. The invention relates to a biological filling permeation type reaction wall, which comprises an accommodating tank filled with an active filler; the circulating gas guide pipes are buried in the active filler, and a plurality of groups of circulating gas guide pipes are arranged at intervals along the length direction of the accommodating tank; the isolation cover body is arranged on the upper side of the active filler, and the circulating gas guide pipe penetrates through the isolation cover body. The containing pool is filled with the active filler, so that pollutants in underground soil or underground water are degraded and treated. The circulating gas guide pipe is used for exhausting the active filler regularly, the blocking degree of the gas to the active filler is reduced, and meanwhile, a filler cleaning agent can be injected into the active filler regularly through the circulating gas guide pipe to clean the filler, so that the passivation condition of the filler is improved, and the long-term stable operation of the reaction wall is maintained.

Description

technical field [0001] The invention relates to the technical field of soil and groundwater pollution control, in particular to a bio-filled permeable reaction wall and a construction method thereof. Background technique [0002] The permeable reactive wall technology is to install a wall filled with active filler underground in the polluted site to form a passive reaction area to intercept and remove pollutants in groundwater. In the prior art, when the reaction wall is built by the bio-glue filling method, in order to fill all the ditches, the amount of bio-glue is too much, and the amount of enzyme preparation in the subsequent step of circulating the enzyme solution is too much. On the one hand, the cost is too high, and on the other hand, the degradation effect of bio-glue is poor, so that the permeability coefficient cannot meet the design requirements. Secondly, after the excessive bio-glue is decomposed, it will be consumed by the microorganisms in the soil and prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
Inventor 郭丽莉李嘉晨熊静王祺康绍果李书鹏张家铭刘亚茹张孟昭
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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