CN213887583U - Heavy metal contaminated soil repair system - Google Patents
Heavy metal contaminated soil repair system Download PDFInfo
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- CN213887583U CN213887583U CN202022541066.5U CN202022541066U CN213887583U CN 213887583 U CN213887583 U CN 213887583U CN 202022541066 U CN202022541066 U CN 202022541066U CN 213887583 U CN213887583 U CN 213887583U
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- repair system
- electrolytic cell
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 63
- 239000002689 soil Substances 0.000 title claims abstract description 62
- 230000008439 repair process Effects 0.000 title abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000005067 remediation Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 235000015097 nutrients Nutrition 0.000 claims abstract description 8
- 244000005700 microbiome Species 0.000 claims abstract description 7
- 238000001179 sorption measurement Methods 0.000 claims description 25
- 238000005507 spraying Methods 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 230000005012 migration Effects 0.000 claims description 6
- 238000013508 migration Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 10
- 230000000813 microbial effect Effects 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 231100000086 high toxicity Toxicity 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 229910021654 trace metal Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Abstract
The utility model belongs to the technical field of the pollution is administered, especially, relate to a heavy metal contaminated soil repair system, including positive pole electrolytic bath and negative pole electrolytic bath, be provided with sprinkler system between positive pole electrolytic bath and the negative pole electrolytic bath, negative pole electrolytic bath the place ahead is provided with the permeable reaction wall, sprinkler system includes the spray line who fixes in the soil top through the support, and the inlet on the spray line passes through the lateral conduit and is connected with the liquid outlet of passivator storage tank, microorganism nutrient solution storage tank respectively, and evenly distributed has a plurality of rotatory nozzle that set up downwards on the spray line. Repair system adopt four kinds of repair systems of electronic repair system-permeable reactive wall repair system-chemical repair system-microorganism repair system to carry out combined system to soil, repair system easy operation, low cost, convenience can restore on the spot to heavy metal contaminated soil, the remediation efficiency is high, does not produce new pollution in the repair process.
Description
Technical Field
The utility model belongs to the technical field of the pollution control, especially, relate to a heavy metal contaminated soil repair system.
Background
Soil is taken as a key resource for human survival and occupies a crucial position in human production and life, however, the problem of heavy metal pollution of soil in China is becoming serious at present. The soil heavy metal pollution refers to the phenomenon that the content of trace metal elements in soil exceeds a background value due to human activities, and the content is too high due to excessive deposition, so that the heavy metal content in the soil is obviously higher than the original content, and the quality of the ecological environment is deteriorated, and is generally called soil heavy metal pollution. The heavy metal is a metal having a specific gravity of 5.0 or more, such as Fe, Mn, Zn, Cd, Hg, Ni, Co, etc. Heavy metal pollution of soil seriously affects the normal yield of crops on one hand and seriously threatens the physical health of human beings on the other hand. Therefore, how to reasonably treat the heavy metal pollution problem of the soil becomes the object of the current key research.
However, the heavy metal contaminated soil remediation system in the prior art has a single remediation technology, and due to the difference in the composition, type, property and the like of the contaminated soil, particularly under the condition of combined pollution caused by the simultaneous existence of different pollutants, an ideal remediation effect is often difficult to achieve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heavy metal contaminated soil repair system, repair system adopt four kinds of repair systems of electronic repair system-permeable reactive wall repair system-chemistry repair system-microorganism repair system to carry out the combined system to soil, repair system easy operation, low cost, convenience, can restore on the spot to heavy metal contaminated soil, the repair efficiency is high, does not produce new pollution in the repair process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a heavy metal contaminated soil repair system, includes positive pole electrolytic bath and the negative pole electrolytic bath that sets up in the certain distance, be provided with sprinkler system between positive pole electrolytic bath and the negative pole electrolytic bath, negative pole electrolytic bath the place ahead is provided with the permeable reaction wall, sprinkler system includes and fixes the spray line in the soil top through the support, the inlet on the spray line passes through the lateral conduit and is connected with the liquid outlet of passivator storage tank, microorganism nutrient solution storage tank respectively, just be provided with the solenoid valve on the lateral conduit respectively, evenly distributed has a plurality of rotatory nozzle that set up downwards on the spray line.
When the repairing system works, firstly, the spraying system is utilized to uniformly spray the passivating agent to the soil, and the passivating agent is utilized to react with the heavy metal in the soil, so that the heavy metal with high toxicity and high activity is finally fixed in the soil in a low-toxicity form; then, applying voltage to the two electrodes, after electrifying, the heavy metal in the soil migrates to the cathode under the action of electric power, in the migration process, the heavy metal is adsorbed and fixed by a permeable reactive barrier arranged in front of a cathode electrolytic cell, and then the permeable reactive barrier adsorbing and fixing heavy metal ions is removed; and finally, uniformly spraying a microbial nutrient to the soil by using a spraying system, removing residual heavy metals in the soil by using microbes, and playing an important role in repairing a soil ecosystem by using the microbes. Finally, the soil polluted by the heavy metal ions is removed after the soil is repaired by combining an electric repairing method, a permeable reactive barrier repairing method, a chemical repairing method and a microbial repairing method.
Preferably, the permeable reactive barrier sequentially comprises three layers along the direction of heavy metal migration to the cathode electrolytic cell: the heavy metal is chemically adsorbed and fixed by a chemical passivator adsorption layer, a physical adsorption material layer and a microorganism adsorption layer through a chemical passivator adsorption layer of a permeable reactive wall and by chemical reaction of a chemical passivator and the heavy metal in the process of migrating the heavy metal to a cathode electrolytic cell under the action of electric power; then, the residual heavy metal continuously migrates backwards, enters a physical adsorption material layer, and is physically adsorbed and fixed by a physical adsorption material; and finally, continuously migrating the residual heavy metal backwards to reach the microbial adsorption layer, and completely fixing the residual heavy metal by using microbes. The chemical adsorption-physical adsorption-microbial adsorption three-layer structure of the permeable reactive barrier fully utilizes three adsorption modes with different principles to adsorb and fix heavy metals, can ensure the sufficient adsorption of the heavy metals and ensures the repairing effect.
As preferred, the spray pipe is including the different annular spray pipe of a plurality of radiuses that the cover was established together, communicate through the connecting pipe between each annular spray pipe, this structure can guarantee to form the spraying pipe network of evenly arranging above soil, can realize the even effect of spraying to soil.
Advantageous effects
The utility model discloses a heavy metal contaminated soil repair system, repair system adopt four kinds of repair methods of electronic restoration method-permeable reactive wall restoration method-chemical remediation method-microorganism repair method to unite. Firstly, uniformly spraying a passivating agent to soil by using a spraying system, and finally fixing heavy metals with high toxicity and high activity in the soil in a low-toxicity form by using the reaction of the passivating agent and the heavy metals in the soil; then, applying voltage to the two electrodes, after electrifying, the heavy metal in the soil migrates to the cathode under the action of electric power, in the migration process, the heavy metal is adsorbed and fixed by a permeable reactive barrier arranged in front of a cathode electrolytic cell, and then the permeable reactive barrier adsorbing and fixing heavy metal ions is removed; and finally, uniformly spraying a microbial nutrient to the soil by using a spraying system, removing residual heavy metals in the soil by using microbes, and playing an important role in repairing a soil ecosystem by using the microbes. Finally, the soil polluted by the heavy metal ions is removed after the soil is repaired by combining an electric repairing method, a permeable reactive barrier repairing method, a chemical repairing method and a microbial repairing method. Repair system easy operation, low cost, convenience can restore on the spot to heavy metal contaminated soil, repair efficiency is high, does not produce new pollution among the repair process.
Drawings
FIG. 1 is a schematic structural diagram of a heavy metal contaminated soil remediation system according to example 1 of the present patent;
FIG. 2 is a schematic structural view of a permeable reactive barrier according to example 2 of this patent;
FIG. 3 is a schematic structural diagram of a spray pipe in embodiment 3 of the present patent;
in the figure, 1: an anodic electrolytic cell; 2: a cathode electrolytic cell; 3: a permeable reactive barrier; 4: a support; 5: a spray pipe; 6: a liquid inlet; 7: a passivating agent storage tank; 8: a microbial nutrient solution storage tank; 9: an electromagnetic valve; 10: a liquid inlet pump; 11: rotating the spray head; 12: a chemical passivator adsorption layer; 13: a layer of physical adsorbent material; 14: a microbial adsorption layer; 15: an annular shower pipe; 16: and (4) connecting the pipes.
Detailed Description
Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
The following examples are given by way of illustration of embodiments of the invention and are not intended to limit the invention, and those skilled in the art will appreciate that modifications within the scope of the invention do not depart from the spirit and scope of the invention.
Example 1
As shown in fig. 1, a heavy metal contaminated soil remediation system comprises an anode electrolytic cell 1 and a cathode electrolytic cell 2 which are arranged in a certain distance, wherein a spraying system is arranged between the anode electrolytic cell and the cathode electrolytic cell, a permeable reactive wall 3 is arranged in front of the cathode electrolytic cell, the spraying system comprises a spraying pipeline 5 which is fixed above soil through a support 4, two ends of the spraying pipeline are closed, a liquid inlet 6 on the spraying pipeline is respectively connected with liquid outlets of a passivator storage tank 7 and a microorganism nutrient solution storage tank 8 through branch pipelines, electromagnetic valves 9 are respectively arranged on the branch pipelines, and a plurality of rotary nozzles 11 which are arranged downwards are uniformly distributed on the spraying pipeline.
When the repairing system works, firstly, the spraying system is utilized to uniformly spray the passivating agent to the soil, and the passivating agent is utilized to react with the heavy metal in the soil, so that the heavy metal with high toxicity and high activity is finally fixed in the soil in a low-toxicity form; then, applying voltage to the two electrodes, after electrifying, the heavy metal in the soil migrates to the cathode under the action of electric power, in the migration process, the heavy metal is adsorbed and fixed by a permeable reactive barrier arranged in front of a cathode electrolytic cell, and then the permeable reactive barrier adsorbing and fixing heavy metal ions is removed; and finally, uniformly spraying a microbial nutrient to the soil by using a spraying system, removing residual heavy metals in the soil by using microbes, and playing an important role in repairing a soil ecosystem by using the microbes. Finally, the soil polluted by the heavy metal ions is removed after the soil is repaired by combining an electric repairing method, a permeable reactive barrier repairing method, a chemical repairing method and a microbial repairing method.
Example 2
The structure of this embodiment is different from that of embodiment 1, as shown in fig. 2, the permeable reactive barrier sequentially comprises three layers along the direction of heavy metal migration to the cathode electrolytic cell: the chemical passivator adsorption layer 12, the physical adsorption material layer 13 and the microorganism adsorption layer 14, when heavy metal migrates to the cathode electrolytic cell under the action of electric power, the heavy metal is firstly adsorbed and fixed by chemical passivator through the chemical passivator adsorption layer of the permeable reactive barrier and chemical reaction is carried out between the chemical passivator and the heavy metal; then, the residual heavy metal continuously migrates backwards, enters a physical adsorption material layer, and is physically adsorbed and fixed by a physical adsorption material; and finally, continuously migrating the residual heavy metal backwards to reach the microbial adsorption layer, and completely fixing the residual heavy metal by using microbes. The chemical adsorption-physical adsorption-microbial adsorption three-layer structure of the permeable reactive barrier fully utilizes three adsorption modes with different principles to adsorb and fix heavy metals, can ensure the sufficient adsorption of the heavy metals and ensures the repairing effect.
Example 3
The difference structure of this embodiment and embodiment 1, embodiment 2 is shown in fig. 3, spray pipe is including the different annular shower 15 of a plurality of radiuses that the cover was established together, communicate through connecting pipe 16 between each annular shower, and this structure can guarantee to form the spraying pipe net of evenly arranging above soil, can realize the even effect of spraying to soil.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (3)
1. The heavy metal contaminated soil remediation system is characterized in that: the device comprises an anode electrolytic cell and a cathode electrolytic cell which are arranged in a certain distance, wherein a spraying system is arranged between the anode electrolytic cell and the cathode electrolytic cell, a permeable reactive barrier is arranged in front of the cathode electrolytic cell, the spraying system comprises a spray pipeline fixed above soil through a support, a liquid inlet on the spray pipeline is respectively connected with liquid outlets of a passivator storage tank and a microorganism nutrient solution storage tank through branch pipelines, electromagnetic valves are respectively arranged on the branch pipelines, and a plurality of rotary spray nozzles which are arranged downwards are uniformly distributed on the spray pipeline.
2. The heavy metal contaminated soil remediation system of claim 1, wherein: the permeable reactive barrier sequentially comprises three layers of structures along the direction of heavy metal migration to the cathode electrolytic cell: a chemical passivator adsorption layer, a physical adsorption material layer and a microorganism adsorption layer.
3. The heavy metal contaminated soil remediation system of claim 1, wherein: the spray pipeline comprises a plurality of annular spray pipelines with different radiuses, which are sleeved together, and the annular spray pipelines are communicated through connecting pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022541066.5U CN213887583U (en) | 2020-11-06 | 2020-11-06 | Heavy metal contaminated soil repair system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022541066.5U CN213887583U (en) | 2020-11-06 | 2020-11-06 | Heavy metal contaminated soil repair system |
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| Publication Number | Publication Date |
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| CN213887583U true CN213887583U (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022541066.5U Active CN213887583U (en) | 2020-11-06 | 2020-11-06 | Heavy metal contaminated soil repair system |
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| Country | Link |
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| CN (1) | CN213887583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857230A (en) * | 2021-10-26 | 2021-12-31 | 常州大学 | Device and method for restoring organic matter and heavy metal combined polluted soil |
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2020
- 2020-11-06 CN CN202022541066.5U patent/CN213887583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857230A (en) * | 2021-10-26 | 2021-12-31 | 常州大学 | Device and method for restoring organic matter and heavy metal combined polluted soil |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240319 Address after: Room 2104, Family Building, Liuquzi Land Bureau, Wuqi County, Yan'an City, Shaanxi Province, 717600 Patentee after: Wuqi Yijiang Water Conservancy Technology Service Co.,Ltd. Country or region after: Zhong Guo Address before: 250000 room 1201, building 30, Shanshui Beicheng, Zhangqiu District, Jinan City, Shandong Province Patentee before: Yang Baosheng Country or region before: Zhong Guo |
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| TR01 | Transfer of patent right |