CN220781793U - In-situ repair system for electrically enhanced heavy metal-organic composite pollutants - Google Patents
In-situ repair system for electrically enhanced heavy metal-organic composite pollutants Download PDFInfo
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- CN220781793U CN220781793U CN202322209408.7U CN202322209408U CN220781793U CN 220781793 U CN220781793 U CN 220781793U CN 202322209408 U CN202322209408 U CN 202322209408U CN 220781793 U CN220781793 U CN 220781793U
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- medicine injection
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 24
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 230000008439 repair process Effects 0.000 title description 4
- 239000003814 drug Substances 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 238000005067 remediation Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 238000000605 extraction Methods 0.000 claims abstract description 19
- 238000000746 purification Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000005728 strengthening Methods 0.000 claims abstract 2
- 230000001276 controlling effect Effects 0.000 claims description 10
- 150000002902 organometallic compounds Chemical class 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000012855 volatile organic compound Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 230000005012 migration Effects 0.000 description 6
- 238000013508 migration Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an in-situ remediation system for electrically strengthening heavy metal-organic composite pollutants, which is used for eliminating the heavy metal-organic composite pollutants in a site to be remedied, wherein the site to be remedied is provided with a plurality of multifunctional electrode wells, the multifunctional electrode wells are divided into a cathode well and an anode well, an anode electrode is arranged in the anode well, and a cathode electrode is arranged in the cathode well, and the in-situ remediation system comprises a medicine injection module, a power module, a tail gas extraction purification module and a monitoring control module, wherein the medicine injection module comprises a medicine stirring tank and a medicine injection pump, has a medicine injection function, and is connected with the plurality of multifunctional electrode wells; the power module comprises a silicon controlled rectifier, a rectifier and an isolation transformer; the tail gas extraction and purification module comprises a gas-liquid separator, a fan, a liquid purifier and a gas purifier, wherein tail gas extracted from a plurality of multifunctional electrode wells enters the gas-liquid separator through a tail gas collecting pipeline; the monitoring control module is connected with the medicine injection module, the power module, the tail gas extraction and purification module and the monitoring electrode.
Description
Technical Field
The utility model relates to the field of soil pollution remediation, in particular to an in-situ remediation system for electrically enhanced heavy metal-organic composite pollutants.
Background
At present, a composite site repairing method with simple operation, low consumption and high efficiency for heavy metal and organic matter pollution is lacking.
The Chinese patent of the utility model (CN 106269843A) adopts direct current to promote the migration of heavy metals and persulfates, and then realizes the combined pollution of the heavy metals and the organic matters by activating the persulfates through alternating current electric heating. However, the heavy metal ions collected in the cathode chamber are not removed in this patent, and thus are not suitable for in-situ remediation of large contaminated sites.
For heavy metal removal, a zero-valent metal reduction method is generally adopted, but agents such as zero-valent metal and the like have the problems of poor mobility, easy inactivation and high cost; in addition, if a structure exists right above the heavy metal contaminated site, repair work cannot be performed. Particularly, the zero-valent metal particles have poor migration and are easy to inactivate when meeting water, so that the zero-valent metal particles are suitable for small-scale application in-situ field repair; in addition, due to the foregoing problems, to ensure that the medicament functions, the addition amount is typically 0.5% -2% (w/w), which is far higher than the concentration order of magnitude of the pollutant, resulting in excessive medicament cost; the building is arranged above the ground, so that the well can not be directly built for injecting medicine.
In summary, how to remove heavy metal and organic compound pollutants and simultaneously remove heavy metal ions conveniently and efficiently is a big problem in the field.
Disclosure of Invention
The utility model provides an in-situ remediation system for electrically enhanced heavy metal-organic composite pollutants, which is used for solving the technical problems in the prior art.
In order to achieve the above-mentioned objective, the present utility model provides an in-situ remediation system for electrically enhancing heavy metal-organic composite pollutants, which is used for removing the heavy metal-organic composite pollutants in a site to be remediated, wherein a plurality of multifunctional electrode wells are arranged in the site to be remediated, the multifunctional electrode wells are divided into a cathode well and an anode well, an anode electrode is arranged in the anode well, and a cathode electrode is arranged in the cathode well, and the in-situ remediation system comprises a medicine injection module, a power module, a tail gas extraction and purification module and a monitoring control module, wherein:
the medicine injection module comprises a medicine stirring tank and a medicine injection pump, has a medicine injection function, and is connected with the plurality of multifunctional electrode wells and used for injecting medicine into the multifunctional electrode wells;
the power module comprises a silicon controlled rectifier, a rectifier and an isolation transformer, wherein the silicon controlled rectifier is used for regulating and controlling the output of alternating current, the rectifier is used for regulating and controlling the output of direct current, and the power module has the function of outputting direct current and alternating current;
the tail gas extraction and purification module comprises a gas-liquid separator, a fan, a liquid purifier and a gas purifier, and has the functions of tail gas extraction and purification, and tail gas extracted from a plurality of multifunctional electrode wells enters the gas-liquid separator through a tail gas collecting pipeline;
the monitoring control module is connected with the medicine injection module, the power module, the tail gas extraction and purification module and the monitoring electrode and is used for monitoring and controlling the pressure, the conductivity, the temperature, the medicine injection flow and total quantity, the extraction flow and the concentration of volatile organic compounds of a polluted site.
In one embodiment of the utility model, the fan is a Roots fan.
In an embodiment of the utility model, the monitoring control module is a PLC control system.
In one embodiment of the utility model, the anode electrode and/or the cathode electrode is a carbon steel electrode.
In one embodiment of the utility model, the lower filler layer of the multi-functional electrode wells is graphite or iron sand, and the upper filler layer is cement-bentonite grouting.
In an embodiment of the present utility model, the inner walls of the plurality of multifunctional electrode wells are flower tubes, and the tube walls of the flower tubes are provided with slits.
In one embodiment of the utility model, the diameter of the inner wall of the plurality of multifunctional electrode wells is 50-200 mm, the slit spacing is 50-200 mm, the slit width is 2-3 mm, and the slit depth is 15-60 mm.
The in-situ remediation system for the electrically enhanced heavy metal-organic compound pollutants provided by the utility model can further remove heavy metal ions conveniently and efficiently while removing the heavy metal-organic compound pollutants, overcomes the defect of single function of the traditional electrode, ensures that the electrode has multiple functions of communicating direct current, communicating alternating current, injecting medicine, extracting and the like, greatly reduces site construction cost and improves site remediation efficiency.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an in situ remediation system for electrically enhanced heavy metal-organic composite contaminants in accordance with one embodiment of the present utility model;
FIG. 2 is a schematic diagram of an electrode according to an embodiment of the utility model;
FIG. 3 is a schematic diagram of an inner wall of a multi-functional electrode well according to an embodiment of the present utility model.
Reference numerals illustrate: a-a medicine injection module; b-a power module; c-tail gas extraction and purification module; d-monitoring and controlling module; 1-a medicament stirring tank; 2-a drug injection pump; 3-silicon controlled rectifier; a 4-rectifier; a 5-isolation transformer; 6-a gas-liquid separator; 7-a fan; 8-a liquid purifier; 9-a gas purifier; 10-PLC control system; 11-electrodes; 12-monitoring electrode.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 is a schematic diagram of an in-situ remediation system for electrically enhanced heavy metal-organic composite pollutants according to an embodiment of the present utility model, as shown in fig. 1, the present utility model provides an in-situ remediation system for electrically enhanced heavy metal-organic composite pollutants, for cleaning heavy metal-organic composite pollutants in a site to be remediated, where a plurality of multifunctional electrode wells are arranged, the multifunctional electrode wells are divided into a cathode well and an anode well, an anode electrode is arranged in the anode well and a cathode electrode is arranged in the cathode well, 11 in fig. 1 is an electrode (non-distinguishing cathode/anode electrode), and the in-situ remediation system comprises a medicine injection module a, a power module B, a tail gas extraction and purification module C and a monitoring control module D, wherein:
the medicine injection module A comprises a medicine stirring tank 1 and a medicine injection pump 2, has a medicine injection function, and the medicine injection pump 2 is connected with a plurality of multifunctional electrode wells and is used for injecting medicine into the multifunctional electrode wells; the chemical injection module A can inject an oxidizing agent or a reducing agent according to the repairing stage, so that the heavy metal-organic compound pollutant in the site to be repaired and the oxidizing agent or the reducing agent are subjected to chemical reaction, and migration of ions to the anode electrode or the cathode electrode is realized. For example, by applying a direct current electric field between the cathode electrode and the anode electrode, the migration of the oxidation-enhancing chemical and the migration of heavy metal ions to the vicinity of the cathode or anode can be promoted, and the reduction chemical can be injected into the cathode well and the anode well to remove heavy metals; an alternating current electric field is applied between the cathode electrode and the anode electrode, so that the oxidation agent can be thermally activated, the chemical reaction is accelerated, and the removal of heavy metal-organic compound pollutants is realized.
The power module B comprises a silicon controlled rectifier 3, a rectifier 4 and an isolation transformer 5, wherein the silicon controlled rectifier 3 is used for regulating and controlling the output of alternating current, the rectifier 4 is used for regulating and controlling the output of direct current, and the power module B has the functions of outputting direct current and alternating current; when the power module B outputs direct current, migration of heavy metal and oxidant can be promoted, when the power module B outputs alternating current, the oxidation agent can be thermally activated, chemical reaction of removing heavy metal and organic matters is promoted, and the technology is coupled, so that efficient restoration of a common heavy metal and organic pollutant composite site is realized.
The tail gas extraction and purification module C comprises a gas-liquid separator 6, a fan 7, a liquid purifier 8 and a gas purifier 9, and has the functions of tail gas extraction and purification, and tail gas extracted from a plurality of multifunctional electrode wells enters the gas-liquid separator 6 through a tail gas collecting pipeline; the liquid purifier 8 and the gas purifier 9 may be purified by activated carbon adsorption or other purification methods, for example.
The monitoring control module D is connected with the medicine injection module A, the power module B, the tail gas extraction and purification module C and the monitoring electrode 12 and is used for monitoring and controlling the pressure, the conductivity, the temperature, the medicine injection flow and the total quantity, the extraction flow and the concentration of volatile organic compounds of a polluted site. When the monitoring control module D detects that the conductivity is obviously increased, the heavy metal and the medicament are migrated in place, and a reaction zone is formed.
In one embodiment of the utility model, the fan 7 is a Roots fan.
In one embodiment of the present utility model, the monitoring control module D is the PLC control system 10.
In one embodiment of the present utility model, the anode electrode and/or the cathode electrode (11) is a carbon steel electrode, and as shown in fig. 2, which is a schematic diagram of the electrode 11 according to one embodiment of the present utility model, the structure of the electrode and the dimensions of each portion are shown in the drawing, in other embodiments, the structure of each portion of the electrode is changed, and the dimensions of each portion of the electrode can be adjusted accordingly, and the present utility model is not limited thereto as required.
In fig. 2, the lower filler layer of the multi-functional electrode wells is graphite or iron sand, and the upper filler layer is cement-bentonite grouting.
FIG. 3 is a schematic view of an inner wall of a multi-functional electrode well according to an embodiment of the present utility model, as shown in FIG. 3, the inner wall of the multi-functional electrode well is a flower pipe, slits are provided on the wall of the flower pipe, the inner wall of the multi-functional electrode well has a diameter of 50-200 mm, a slit interval of 50-200 mm, a slit width of 2-3 mm, and a slit depth of 15-60 mm. In other embodiments, the dimensions of the above portions may be adjusted, as the actual need dictates, and the utility model is not limited thereto.
The in-situ remediation system for the electrically enhanced heavy metal-organic compound pollutants provided by the utility model can further remove heavy metal ions conveniently and efficiently while removing the heavy metal-organic compound pollutants, overcomes the defect of single function of the traditional electrode, ensures that the electrode has multiple functions of communicating direct current, communicating alternating current, injecting medicine, extracting and the like, greatly reduces site construction cost and improves site remediation efficiency.
Those of ordinary skill in the art will appreciate that: the drawing is a schematic diagram of one embodiment and the modules or flows in the drawing are not necessarily required to practice the utility model.
Those of ordinary skill in the art will appreciate that: the modules in the apparatus of the embodiments may be distributed in the apparatus of the embodiments according to the description of the embodiments, or may be located in one or more apparatuses different from the present embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. An in-situ remediation system for electrically strengthening heavy metal-organic compound pollutants is used for eliminating the heavy metal-organic compound pollutants in a field to be remediated, a plurality of multifunctional electrode wells are arranged in the field to be remediated, the multifunctional electrode wells are divided into a cathode well and an anode well, an anode electrode is arranged in the anode well, and a cathode electrode is arranged in the cathode well, and the in-situ remediation system is characterized by comprising a medicine injection module, a power module, a tail gas extraction and purification module and a monitoring control module, wherein:
the medicine injection module comprises a medicine stirring tank and a medicine injection pump, has a medicine injection function, and is connected with the plurality of multifunctional electrode wells and used for injecting medicine into the multifunctional electrode wells;
the power module comprises a silicon controlled rectifier, a rectifier and an isolation transformer, wherein the silicon controlled rectifier is used for regulating and controlling the output of alternating current, the rectifier is used for regulating and controlling the output of direct current, and the power module has the function of outputting direct current and alternating current;
the tail gas extraction and purification module comprises a gas-liquid separator, a fan, a liquid purifier and a gas purifier, and has the functions of tail gas extraction and purification, and tail gas extracted from a plurality of multifunctional electrode wells enters the gas-liquid separator through a tail gas collecting pipeline;
the monitoring control module is connected with the medicine injection module, the power module, the tail gas extraction and purification module and the monitoring electrode and is used for monitoring and controlling the pressure, the conductivity, the temperature, the medicine injection flow and total quantity, the extraction flow and the concentration of volatile organic compounds of a polluted site.
2. The in-situ remediation system of electrically enhanced heavy metal-organic composite contaminants of claim 1, wherein the blower is a roots blower.
3. The in-situ remediation system of electrically enhanced heavy metal-organic composite pollutants of claim 1, wherein the monitoring control module is a PLC control system.
4. The electrically enhanced heavy metal-organic composite contaminant in situ remediation system of claim 1, wherein the anode electrode and/or the cathode electrode is a carbon steel electrode.
5. The in-situ remediation system of electrically enhanced heavy metal-organic composite contaminants of claim 1, wherein the lower filler layer of the plurality of multi-functional electrode wells is graphite or iron sand, and the upper filler layer is cement-bentonite grout.
6. The in-situ remediation system of electrically enhanced heavy metal-organic composite pollutants of claim 1, wherein the inner walls of the plurality of multifunctional electrode wells are flower tubes, and the tube walls of the flower tubes are provided with slits.
7. The in-situ remediation system of electrically enhanced heavy metal-organic composite contaminants of claim 6, wherein the inner walls of the plurality of multi-functional electrode wells have diameters of 50-200 mm, slit spacing of 50-200 mm, slit width of 2-3 mm, and slit depth of 15-60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322209408.7U CN220781793U (en) | 2023-08-17 | 2023-08-17 | In-situ repair system for electrically enhanced heavy metal-organic composite pollutants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322209408.7U CN220781793U (en) | 2023-08-17 | 2023-08-17 | In-situ repair system for electrically enhanced heavy metal-organic composite pollutants |
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| Publication Number | Publication Date |
|---|---|
| CN220781793U true CN220781793U (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322209408.7U Active CN220781793U (en) | 2023-08-17 | 2023-08-17 | In-situ repair system for electrically enhanced heavy metal-organic composite pollutants |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220781793U (en) |
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2023
- 2023-08-17 CN CN202322209408.7U patent/CN220781793U/en active Active
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