CN210497644U - Electric repairing rod for heavy metal contaminated soil - Google Patents
Electric repairing rod for heavy metal contaminated soil Download PDFInfo
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- CN210497644U CN210497644U CN201921469029.9U CN201921469029U CN210497644U CN 210497644 U CN210497644 U CN 210497644U CN 201921469029 U CN201921469029 U CN 201921469029U CN 210497644 U CN210497644 U CN 210497644U
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Abstract
The utility model belongs to an electronic restoration stick for heavy metal contaminated soil, including a solar cell panel (1), bracing piece (2), a negative pole storage container stick (3), what the intussuseption of negative pole storage container stick was filled is that the hydrogen ion of load zero-valent iron based montmorillonite type heavy metal adsorbs granule (33), what link to each other with the excellent wall of negative pole storage container stick is positive pole storage container stick (4), every positive pole storage container stick has an anode rod (42), what the intussuseption of positive pole storage container stick was that the polymer base inhales hydrocolloid granule (43). The repairing rod is convenient to use, the soil current with different strengths can be formed between the cathode and the anode to adapt to the change of the concentration of heavy metal ions in soil, the distance and the voltage between the anode and the cathode do not need to be adjusted for multiple times, the electrode polarization caused by overhigh hydroxide ion concentration is also reduced, the energy consumption is reduced, and the efficiency of removing the heavy metal in the soil is improved.
Description
The technical field is as follows:
the utility model belongs to the technical field of soil remediation, especially, relate to an electronic restoration stick for heavy metal contaminated soil.
Background art:
heavy metal pollution of soil is an important and urgent problem threatening human health, and various methods are urgently needed to reduce the content of heavy metal in the polluted soil to a reasonable range. At present, the methods for reducing the content of heavy metals in soil mainly comprise the following steps: the soil leaching method, the solidification/stabilization method, the plant method, the microorganism method and the like, but the methods all need to add a large amount of other substances (including chemical agents and the like) which are not original to the soil, and the additional substances easily influence the original composition structure and the original physicochemical properties of the soil. Compared with the method, the method for removing the heavy metals in the soil by the electrokinetic method can not add external medicaments to the soil or only a small amount of the added external medicaments are added, so that the raw material cost consumed by the electrokinetic method is relatively low, the original composition structure and physicochemical properties of the soil are not influenced basically, and the advantages make the electrokinetic method become one of the technologies with the most application prospect in the remediation of the heavy metal contaminated soil.
Electrokinetic remediation relates to two principles of electrochemistry and electrodynamics, wherein the driving forces corresponding to the two principles enrich pollutants in soil to an electrode region, and then the pollutants enriched in the electrode region are collected and treated. In the traditional electric repairing device, two electrodes are arranged on two sides of polluted soil in parallel, and an electric field is formed in the soil area after direct current is supplied. Under the action of electric field force, heavy metal ions migrate and concentrate near the cathode or the anode in the forms of electromigration, electrophoresis, electrodialysis and the like, so that the pollutant content in the polluted area is reduced. The traditional electric repairing device has the following defects in the practical use process: (1) because the distance between two electrodes can influence the current intensity of soil passing through between two electrodes, the distance between two electrodes needs to be adjusted to a proper position, generally higher current intensity is favorable for the migration of heavy metal pollutants, however, the heavy metal migration is more and more stranded along with the reduction of the content of heavy metal in the soil between two electrodesIt is difficult to adjust the distance and voltage between electrodes many times to maintain better removal efficiency of heavy metals in soil (chalcone, etc., industrial safety and environmental protection, vol 43, 12 nd, page 106 of 104-. (2) The cathode of the electric repairing device generates OH through electrode reaction-Ions, heavy metal ions and OH thus migrating to the vicinity of the cathode-The ions are combined to generate precipitates, and the precipitates can block the tiny pores of the soil and are not beneficial to the circulation of pollutants, so that the soil remediation efficiency is reduced. (3) OH generated by cathode and anode-、H+Under the action of electric field, the ions migrate to anode and cathode respectively, and the migration rate of the two ions is always smaller than that of discharge on the electrode, so that OH near the electrode-、H+The ion concentration is too high, causing the polarization of the electrode, and the energy consumption is correspondingly increased.
The utility model has the following contents:
the utility model aims to solve the problem of providing an electric repairing rod for treating heavy metal contaminated soil, which is convenient to use, does not need to adjust the distance and voltage between the anode and the cathode for many times, can form soil current with different intensities between the cathode and the anode, and adapts to the change of the concentration of heavy metal ions in the soil; can also reduce OH near the cathode-The concentration of ions, thereby reducing the migration of heavy metal ions to the vicinity of the cathode to encounter OH-The probability of ion generation and precipitation is reduced, and the excessive OH is reduced-Electrode polarization caused by the concentration of the root ions, thereby reducing energy consumption and improving the efficiency of removing heavy metals in the soil.
The utility model discloses a technical scheme who solves technical problem and adopt is: the utility model provides an electronic restoration stick for heavy metal contaminated soil, characterized in that, including a solar cell panel (1), bracing piece (2), a negative pole storage container stick (3), round hole (31) are being evenly distributed to the stick wall of negative pole storage container stick, there is a negative pole stick (32) in the negative pole storage container stick, what the negative pole storage container stick was filled is hydrogen ion base montmorillonite type heavy metal adsorption particle (33) of load zero-valent iron, pointed end (34) of negative pole storage container stick, what link to each other with the stick wall of negative pole storage container stick is positive pole storage container stick (4), round hole (31) are being evenly distributed to the stick wall of positive pole storage container stick, every positive pole storage container stick has an anode rod (42), what the positive pole storage container stick was filled is polymer base and inhales hydrocolloid granule (43).
The electric repairing rod for the heavy metal contaminated soil is characterized in that the number of round holes (31) is 4-12, and the round holes are uniformly distributed on the rod wall of the cathode storage container rod (3).
The electric restoration rod for the heavy metal contaminated soil is characterized in that the length of the cathode storage container rod (3) is 30-150 cm.
The electric restoration rod for the heavy metal contaminated soil is characterized in that the number of the anode storage container rods (4) connected with the rod wall of the cathode storage container rod is 2-8.
The electric restoration rod for the heavy metal contaminated soil has the advantage that the angle formed by the cathode storage container rod (3) and the anode storage container rod (4) can be 30-150 degrees.
The electric repairing rod for the heavy metal contaminated soil is characterized in that 2-10 circular holes (31) are uniformly distributed on the rod wall of each anode storage container rod (4).
The electric repairing rod for the heavy metal contaminated soil is characterized in that the length of the anode storage container rod (4) is 10-100 cm.
The beneficial effects produced by adopting the technical scheme are as follows:
a electronic restoration stick for heavy metal contaminated soil, solar cell panel (1) that include are used for providing the electric energy for electronic negative pole stick and the positive pole stick of restoreing the stick, electronic negative pole stick of restoreing the stick connects solar cell panel's negative pole, electronic positive pole stick of restoreing the stick connects solar cell panel's positive pole, solar cell panel makes electronic restoration stick need not to join in marriage in addition the power, charges for negative pole stick and positive pole stick automatically, makes electronic restoration stick in-service use more convenient.
A electronic restoration stick for heavy metal contaminated soil, cathode bar (32) of the cathode storage container stick that includes link to each other with the negative pole of power, there are more electrons on the cathode bar surface, can produce hydroxyl ion at the electrode reaction that the cathode bar takes place, the cathode bar of taking the negative charge also attracts pollutants such as the metal ion of taking the positive charge in soil to cathode bar surface and near region.
The cathode storage container rod is filled with hydrogen ion-based montmorillonite type heavy metal adsorption particles (33) loaded with zero-valent iron, the cathode rod is wrapped in the heavy metal adsorption particles, the heavy metal adsorption particles are made of hydrogen ion-based montmorillonite and loaded zero-valent iron, the montmorillonite is a layered clay mineral which is formed by stacking silicate sheets with negative electricity on the surface by virtue of electrostatic action among the sheets, and the layered clay mineral has higher cation exchange property and high adsorptivity to heavy metal ions. The hydrogen ion-based montmorillonite heavy metal adsorption particles loaded with zero-valent iron have the following advantages: (1) the hydrogen ions are arranged between the inorganic layered plates of the hydrogen ion-based montmorillonite, and can be released from the layers of the montmorillonite in an ion exchange mode and neutralized by hydroxyl ions generated by the reaction with the cathode bar electrode, so that the heavy metal ions migrating to the vicinity of the cathode bar are prevented from reacting with the hydroxyl ions to form precipitates, the condition that the heavy metal hydroxides deposit to block soil gaps is reduced, the circulation of pollutants is facilitated, and the removal efficiency of the electric repairing bar on the heavy metal ions in the soil is improved. (2) The heavy metal ion that migrates to near the cathode bar can take place the ion exchange reaction between the layer with hydrogen ion group montmorillonite for heavy metal ion gets into between the montmorillonite plywood, heavy metal ion is just enriched on the heavy metal adsorption particle in the cathode storage container stick like this, rather than gathering to the cathode bar surface, if a large amount of heavy metal ion enrichment is reduced into heavy metal particle again on the cathode bar surface, these heavy metal particles can be tightly attached to on the cathode bar, cause the polarization phenomenon of cathode bar, the energy consumption is improved, the efficiency of cleaing away of heavy metal in the restoration stick to soil has been reduced. (3) The zero-valent iron can effectively remove heavy metals in soil, the removal rate of the heavy metals is related to the surface area of the zero-valent iron and the type of the iron (the herculbe is strong, the reduction removal of Cr (VI) in the soil by the strengthened and stabilized nano zero-valent iron and the mechanism [ D ]. the taiyuan: the university of taiyuan institute of technology, 2015.), the zero-valent iron loaded by the montmorillonite has larger specific surface area and higher reaction activity, and the residual amount of the heavy metals in the soil can further reach the standard.
The rod wall of the cathode storage container rod and the rod wall of the anode storage container rod are uniformly distributed with round holes (31), and the round holes provide a passage for heavy metal ions in soil to enter and exit the interior of the cathode storage container rod and the anode storage container rod. The size and the number of the round holes also influence the current intensity between the cathode and the anode, and the size of the current intensity influences the repair efficiency of the electric repair rod on the soil heavy metal.
The utility model relates to an electronic restoration stick for heavy metal contaminated soil, the one end of negative pole storage container stick is most advanced (34) and is favorable to inserting electronic restoration stick in soil more conveniently.
A electronic restoration stick for heavy metal contaminated soil, anode rod (42) of the positive pole storage container stick (4) that include links to each other with solar cell panel's positive pole, the electrode reaction that the anode rod takes place can produce hydrogen ion, anode rod surface lack electric charge positive charge, the electric field can order about pollutants such as metal ion and hydrogen ion to cathode rod surface and near region in the soil with positive charge.
The anode storage container rod is filled with macromolecule-based hydrocolloid absorbent particles (43), the anode rod in the anode storage container rod is wrapped in the macromolecule-based hydrocolloid absorbent particles, the macromolecular group hydrocolloid absorbent particles can absorb moisture in the environment and expand, the macromolecular group hydrocolloid absorbent particles after water absorption and expansion lock the moisture in the anode storage container rod through a three-dimensional network of macromolecular chains, so that the environment around the anode rod is similar to a 'solution', this facilitates the rapid migration of hydrogen ions generated by the anode rod electrode reaction out of the anode storage container rod, thereby entering the soil clamped between the anode storage container rod and the cathode storage container rod, when an acid peak formed by hydrogen ions moves in the soil under the driving of an electric field, the acid peak can promote heavy metal ions in the soil to be easily desorbed from soil particles, so that the heavy metal ions are easily moved into the cathode storage container rod.
Become a fan-shaped between negative pole storage container stick (3) and positive pole storage container stick (4), this kind of arrangement makes the distance between the negative pole stick in the negative pole storage container stick and the positive pole stick in the positive pole storage container stick have from little to big continuous variation's characteristics, correspondingly the current strength who passes through also is from little to big continuous variation in the soil of the sector region that negative pole storage container stick and positive pole storage container stick enclose, the region that current strength is big, heavy metal concentration reduces sooner. When the heavy metal concentration in partial soil area in the soil clamped by the cathode storage container rod (3) and the anode storage container rod (4) is reduced rapidly, the heavy metals in other soil areas can be driven by concentration difference and an electric field to diffuse to the area with rapid heavy metal concentration reduction, so that the distance and voltage between the cathode and the anode do not need to be changed for many times along with the change of the concentration of the heavy metal ions in the soil.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of an electrokinetic remediation bar for heavy metal contaminated soil.
Fig. 2 is a schematic view of the structure of a cathode storage container rod.
Fig. 3 is a schematic view of the structure of the anode storage container rod.
Reference numbers in the figures: the solar cell panel comprises a solar cell panel (1), a support rod (2), a cathode storage container rod (3), a round hole (31), a cathode rod (32), hydrogen ion-based montmorillonite-type heavy metal adsorption particles (33) loaded with zero-valent iron, a tip (34) of the cathode storage container rod, an anode storage container rod (4), an anode rod (42) and polymer-based hydrocolloid adsorption particles (43).
Detailed Description
Example 1
Referring to the attached drawings, the electric repairing rod for the heavy metal contaminated soil is characterized by comprising a solar panel (1), a supporting rod (2), a cathode storage container rod (3), round holes (31) are uniformly distributed in the rod wall of the cathode storage container rod, a cathode rod (32) is arranged in the cathode storage container rod, hydrogen ion-based montmorillonite heavy metal adsorption particles (33) loaded with zero-valent iron are filled in the cathode storage container rod, the tip end (34) of the cathode storage container rod is connected with the rod wall of the cathode storage container rod to form an anode storage container rod (4), the round holes (31) are uniformly distributed in the rod wall of the anode storage container rod, an anode rod (42) is arranged in each anode storage container rod, and polymer-based hydrocolloid adsorption particles (43) are filled in the anode storage container rod. The number of the round holes (31) uniformly distributed on the rod wall of the cathode storage container rod (3) is 4. The length of the cathode storage container rod (3) is 150 cm. The number of the anode storage container rods (4) connected with the rod wall of the cathode storage container rod is 2. The angle formed by the cathode storage container rod (3) and the anode storage container rod (4) is 150 degrees. The number of the round holes (31) uniformly distributed on the rod wall of the anode storage container rod (4) is 2. The length of the anode storage container rod (4) is 100 cm.
Example 2
Referring to the attached drawings, the electric repairing rod for the heavy metal contaminated soil is characterized by comprising a solar panel (1), a supporting rod (2), a cathode storage container rod (3), round holes (31) are uniformly distributed in the rod wall of the cathode storage container rod, a cathode rod (32) is arranged in the cathode storage container rod, hydrogen ion-based montmorillonite heavy metal adsorption particles (33) loaded with zero-valent iron are filled in the cathode storage container rod, the tip end (34) of the cathode storage container rod is connected with the rod wall of the cathode storage container rod to form an anode storage container rod (4), the round holes (31) are uniformly distributed in the rod wall of the anode storage container rod, an anode rod (42) is arranged in each anode storage container rod, and polymer-based hydrocolloid adsorption particles (43) are filled in the anode storage container rod. The number of the round holes (31) uniformly distributed on the rod wall of the cathode storage container rod (3) is 8. The length of the cathode storage container rod (3) is 90 cm. The number of the anode storage container rods (4) connected with the rod wall of the cathode storage container rod is 5. The angle formed by the cathode storage container rod (3) and the anode storage container rod (4) is 90 degrees. The number of the round holes (31) uniformly distributed on the rod wall of the anode storage container rod (4) is 6. The length of the anode storage container rod (4) is 60 cm.
Example 3
Referring to the attached drawings, the electric repairing rod for the heavy metal contaminated soil is characterized by comprising a solar panel (1), a supporting rod (2), a cathode storage container rod (3), round holes (31) are uniformly distributed in the rod wall of the cathode storage container rod, a cathode rod (32) is arranged in the cathode storage container rod, hydrogen ion-based montmorillonite heavy metal adsorption particles (33) loaded with zero-valent iron are filled in the cathode storage container rod, the tip end (34) of the cathode storage container rod is connected with the rod wall of the cathode storage container rod to form an anode storage container rod (4), the round holes (31) are uniformly distributed in the rod wall of the anode storage container rod, an anode rod (42) is arranged in each anode storage container rod, and polymer-based hydrocolloid adsorption particles (43) are filled in the anode storage container rod. The number of the round holes (31) uniformly distributed on the rod wall of the cathode storage container rod (3) is 12. The length of the cathode storage container rod (3) is 30 cm. The number of the anode storage container rods (4) connected with the rod wall of the cathode storage container rod is 8. The angle formed by the cathode storage container rod (3) and the anode storage container rod (4) is 30 degrees. The number of the round holes (31) evenly distributed on the rod wall of the anode storage container rod (4) is 10. The length of the anode storage container rod (4) is 10 cm.
The utility model discloses a construction method: (1) digging a round pit which can contain the electric repairing rod of the utility model in the heavy metal polluted soil, wherein the depth of the pit is about 20cm higher than the height of the cathode storage container rod of the electric repairing rod; (2) putting a cathode storage container rod of the electric repair rod into the dug circular pit in a manner of being vertical to the ground; (3) covering soil, and enabling the solar cell panel to be 50-150 cm higher than the ground; after a period of time, the hydrogen ion-based montmorillonite heavy metal adsorption particles loaded with zero-valent iron in the cathode storage container rod and the polymer-based water-absorbing colloid particles in the anode storage container rod can be replaced, and the replaced electric repair rod can be reused.
The product form of the present invention is not limited to the drawings and embodiments of the present application, and any person can properly change or modify the product form of the present invention without departing from the scope of the present invention.
Claims (7)
1. The electric repairing rod for the heavy metal contaminated soil is characterized by comprising a solar panel (1), a supporting rod (2) and a cathode storage container rod (3), wherein circular holes (31) are uniformly distributed in the rod wall of the cathode storage container rod, a cathode rod (32) is arranged in the cathode storage container rod, hydrogen ion-based montmorillonite heavy metal adsorption particles (33) loaded with zero-valent iron are filled in the cathode storage container rod, a tip (34) of the cathode storage container rod is connected with the rod wall of the cathode storage container rod to form an anode storage container rod (4), the circular holes (31) are uniformly distributed in the rod wall of the anode storage container rod, an anode rod (42) is arranged in each anode storage container rod, and polymer-based hydrocolloid adsorption particles (43) are filled in the anode storage container rod.
2. The electric restoration rod for heavy metal contaminated soil according to claim 1, wherein the number of the circular holes (31) uniformly distributed on the rod wall of the cathode storage container rod (3) is 4-12.
3. The electrokinetic remediation bar for heavy metal contaminated soil of claim 1, wherein the length of the cathode storage container bar (3) is 30 to 150 cm.
4. The electrokinetic remediation bar for heavy metal contaminated soil according to claim 1, wherein the number of the anode storage container bars (4) connected to the bar wall of the cathode storage container bar is 2 to 8.
5. The electric restoration rod for heavy metal contaminated soil according to claim 1, wherein the number of the circular holes (31) is 2-10 evenly distributed on the rod wall of each anode storage container rod (4).
6. The electrokinetic remediation rod for heavy metal contaminated soil according to claim 1, wherein the length of the anode storage container rod (4) is 10 to 100 cm.
7. The electric restoration rod for heavy metal contaminated soil according to claim 1, wherein the solar cell panel (1) of the electric restoration rod is 50-150 cm higher than the ground in actual use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469029.9U CN210497644U (en) | 2019-09-05 | 2019-09-05 | Electric repairing rod for heavy metal contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469029.9U CN210497644U (en) | 2019-09-05 | 2019-09-05 | Electric repairing rod for heavy metal contaminated soil |
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| Publication Number | Publication Date |
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| CN210497644U true CN210497644U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921469029.9U Expired - Fee Related CN210497644U (en) | 2019-09-05 | 2019-09-05 | Electric repairing rod for heavy metal contaminated soil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842462A (en) * | 2020-06-19 | 2020-10-30 | 河海大学 | Polluted bottom mud multi-pole electric restoration and construction method thereof |
| CN112170473A (en) * | 2020-09-04 | 2021-01-05 | 刘玉福 | Cold diffusion repairing rod based on organic contaminated soil |
-
2019
- 2019-09-05 CN CN201921469029.9U patent/CN210497644U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842462A (en) * | 2020-06-19 | 2020-10-30 | 河海大学 | Polluted bottom mud multi-pole electric restoration and construction method thereof |
| CN112170473A (en) * | 2020-09-04 | 2021-01-05 | 刘玉福 | Cold diffusion repairing rod based on organic contaminated soil |
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Granted publication date: 20200512 Termination date: 20210905 |