CN220371903U - Leaching-regenerating cyclic utilization device for soil heavy metals - Google Patents
Leaching-regenerating cyclic utilization device for soil heavy metals Download PDFInfo
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- CN220371903U CN220371903U CN202321872445.XU CN202321872445U CN220371903U CN 220371903 U CN220371903 U CN 220371903U CN 202321872445 U CN202321872445 U CN 202321872445U CN 220371903 U CN220371903 U CN 220371903U
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- heavy metals
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- 239000002689 soil Substances 0.000 title claims abstract description 60
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 38
- 125000004122 cyclic group Chemical group 0.000 title description 3
- 238000002386 leaching Methods 0.000 claims abstract description 168
- 239000007788 liquid Substances 0.000 claims abstract description 124
- 239000002699 waste material Substances 0.000 claims abstract description 48
- 238000011069 regeneration method Methods 0.000 claims abstract description 35
- 238000004064 recycling Methods 0.000 claims abstract description 31
- 230000008929 regeneration Effects 0.000 claims abstract description 30
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000001914 filtration Methods 0.000 claims description 37
- 230000001172 regenerating effect Effects 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000012492 regenerant Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 239000003480 eluent Substances 0.000 abstract description 5
- 238000005067 remediation Methods 0.000 abstract description 4
- 239000002738 chelating agent Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model discloses a leaching-regenerating recycling device for soil heavy metals, and belongs to the technical field of soil remediation. According to the leaching-regeneration recycling device for the soil heavy metals, leaching and electrochemical regeneration are combined together, the electric field is utilized for electrolytic regeneration of leaching waste liquid, the regenerated leaching liquid can be used for soil leaching for the second time, a circular closed technical route of leaching-regeneration-secondary leaching is formed, and the purposes of improving the heavy metal removal effect and realizing resource recycling are achieved. Other substances are not introduced in the regeneration process, secondary pollution is avoided, chelating agent regeneration is realized through electrolysis, the use efficiency of the eluent is improved, the operation is simple, and the equipment requirement is low.
Description
Technical Field
The utility model relates to the technical field of soil remediation, in particular to a leaching-regenerating recycling device for soil heavy metals.
Background
Common remediation methods for heavy metal contaminated soil include phytoremediation, soil solidification/stabilization and soil leaching. The soil leaching method can fundamentally repair heavy metal pollution, particularly to a farmland polluted by medium (heavy) heavy metal, and has the advantages of high removal efficiency and short repair time. The soil leaching method has the technical key that a proper washing reagent is selected, and a chelating agent is widely studied in recent years as the washing reagent, and can be used for efficiently removing heavy metals in polluted soil by chelating and desorbing heavy metal ions on the surfaces of soil particles.
In the soil leaching restoration process, in order to achieve higher leaching efficiency, the dosage of the leaching solution is generally higher than the dosage required by the reaction, a large amount of leaching waste liquid containing chelating liquid and target pollutants is generated, and if the leaching waste liquid is not recycled, the cost of the soil leaching restoration is increased, and secondary pollution and the like can be brought to the environment due to direct discharge without treatment. In the existing method, biological or chemical treatment is mainly considered in the treatment mode of the eluate, so that the operation difficulty is high, the treatment time is long, and the cost is high.
Disclosure of Invention
The utility model aims to provide a leaching-regenerating recycling device for soil heavy metals, which aims to solve the problem that the leaching waste liquid generated by the existing soil remediation is troublesome to treat and cannot be recycled.
The technical scheme for solving the technical problems is as follows:
a leaching-regenerating recycling device for soil heavy metals, comprising: the leaching reaction chamber, the electrolysis reaction chamber and the leaching regenerated liquid storage chamber are sequentially communicated;
a baffle plate is arranged in the leaching reaction chamber, the baffle plate is fixed on the inner wall of the bottom of the leaching reaction chamber, the baffle plate divides the leaching reaction chamber into a reaction zone and a filtering zone, and the reaction zone is communicated with the filtering zone;
a leacheate water inlet is formed in the bottom of the leaching reaction chamber, and the leacheate water inlet is communicated with a leacheate storage tank; a soil inlet is formed above the side wall of the leaching reaction chamber, and the soil inlet is arranged close to the reaction zone; a leaching waste liquid outlet is formed below the side wall of the leaching reaction chamber, and is close to the filtering area;
a leaching waste liquid water inlet is formed above the side wall of the electrolytic reaction chamber and is communicated with the leaching waste liquid water outlet through a leaching waste water conveying pump; a leaching regenerating liquid outlet is arranged below the side wall of the electrolytic reaction chamber corresponding to the leaching waste liquid inlet; an electrolytic reaction piece is arranged in the electrolytic reaction chamber;
a leaching regenerating liquid water inlet and a filtering liquid water outlet are respectively arranged above two sides of the leaching regenerating liquid storage chamber, and the leaching regenerating liquid water inlet is communicated with the leaching regenerating liquid water outlet through a leaching regenerating liquid conveying pump; and the filtrate water outlet is communicated with the leacheate water inlet through a filtrate conveying pump.
Further, in the leaching-regenerating recycling device for soil heavy metals, a stirrer with blades is further arranged at the bottom of the reaction zone, one end of the stirrer is fixed at the bottom of the reaction zone, and the other end of the stirrer extends to the top of the reaction zone.
Further, in the leaching-regenerating recycling device for the heavy metals in the soil, a leaching waste liquid filter layer is arranged in the filter area.
Further, in the leaching-regenerating recycling device for the heavy metals in soil, the leaching waste liquid filtering layer is arranged between the inner side wall of the leaching reaction chamber and the end part of the partition plate, and the leaching waste liquid filtering layer is arranged far away from the bottom of the leaching reaction chamber.
Further, in the leaching-regenerating recycling device for heavy metals in soil, the leaching waste liquid filtering layer sequentially comprises from top to bottom: the sand filter comprises a first filter screen, a sand layer, a fine sand layer and a second filter screen.
Further, in the leaching-regenerating recycling device for soil heavy metals, the electrolytic reaction member comprises: and the cathode and the anode are arranged in the electrolytic reaction chamber and are communicated through a power supply arranged outside the electrolytic reaction chamber.
Further, in the leaching-regenerating recycling device for the heavy metals in the soil, a leaching regenerating liquid filter layer is arranged in the leaching regenerating liquid storage chamber, and two ends of the leaching regenerating liquid filter layer are respectively fixed at the top and the bottom of the leaching regenerating liquid storage chamber.
Further, in the leaching-regenerating recycling device for the heavy metals in the soil, the leaching regenerating liquid filtering layer is arranged close to the leaching regenerating liquid water inlet, a drain outlet is further arranged below the side wall of the leaching regenerating liquid storage chamber, and the drain outlet and the leaching regenerating liquid water inlet are arranged on the same side.
Further, in the leaching-regenerating recycling device for heavy metals in soil, the leaching regenerating liquid filtering layer sequentially comprises, from right to left: filter cotton and microporous filter membrane.
Further, in the leaching-regenerating recycling device for soil heavy metals, the pore diameter of the microporous filter membrane is 0.3-0.8 μm.
The utility model has the following beneficial effects:
according to the leaching-regeneration recycling device for the soil heavy metals, leaching and electrochemical regeneration are combined together, the electric field is utilized for electrolytic regeneration of leaching waste liquid, the regenerated leaching liquid can be used for soil leaching for the second time, a circular closed technical route of leaching-regeneration-secondary leaching is formed, and the purposes of improving the heavy metal removal effect and realizing resource recycling are achieved. Other substances are not introduced in the regeneration process, secondary pollution is avoided, chelating agent regeneration is realized through electrolysis, the use efficiency of the eluent is improved, the operation is simple, and the equipment requirement is low.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:
FIG. 1 is a schematic structural view of a leaching-regenerating recycling device for soil heavy metals;
fig. 2 is a schematic structural view of a leaching waste liquid filter layer of the leaching-regenerating recycling device for soil heavy metals;
FIG. 3 is a schematic diagram of the structure of a leaching regenerant filter layer of the leaching-regenerating recycling device for soil heavy metals;
in the drawings, the reference numerals and corresponding part names:
in the figure: 100-leaching reaction chamber, 101-leaching liquid water inlet, 102-soil inlet, 103-leaching liquid water outlet, 110-baffle, 120-reaction zone, 130-filtration zone, 140-stirrer, 150-leaching liquid filtration layer, 151-first filter screen, 152-sand layer, 153-fine sand layer, 154-second filter screen, 200-electrolytic reaction chamber, 201-leaching liquid water inlet, 202-leaching regeneration liquid water outlet, 210-cathode, 220-anode, 230-power supply, 300-leaching regeneration liquid storage chamber, 301-leaching regeneration liquid water inlet, 302-filtering liquid water outlet, 303-drain, 310-leaching regeneration liquid filtration layer, 311-filtration cotton, 312-microporous filtration membrane, 400-waste water leaching delivery pump, 500-leaching regeneration liquid delivery pump, 600-filtering liquid delivery pump.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1, the leaching-regenerating recycling device for soil heavy metals of the present utility model comprises: the leaching reaction chamber 100, the electrolysis reaction chamber 200 and the leaching regenerated liquid storage chamber 300 are sequentially communicated with each other, and the leaching reaction chamber 100, the electrolysis reaction chamber 200 and the leaching regenerated liquid storage chamber 300. The leaching reaction chamber 100 is used for soil leaching reaction, the generated leaching waste liquid enters the electrolysis reaction chamber 200 to carry out electrolysis to generate leaching regenerated liquid, the leaching regenerated liquid enters the leaching regenerated liquid storage chamber 300 and is then conveyed into the leaching reaction chamber 100, and the cyclic utilization of leaching, regeneration and leaching is realized.
Referring to fig. 1 and 2, two side walls of the leaching reaction chamber 100 are respectively provided with a soil inlet 102 and a leaching waste liquid outlet 103, the soil inlet 102 is arranged above the side wall of the leaching reaction chamber 100, and the leaching waste liquid outlet 103 is arranged below the side wall of the leaching reaction chamber 100. The bottom of the leaching reaction chamber 100 is provided with a leaching solution water inlet 101, the leaching solution water inlet 101 is communicated with a leaching solution storage tank, the leaching solution storage tank is filled with leaching solution with the mass concentration of 3-7wt%, and the leaching solution is prepared from maleic acid acrylic acid copolymer sodium or ethylenediamine tetramethylene sodium phosphate.
A baffle plate 110 is arranged in the leaching reaction chamber 100, the baffle plate 110 is fixed on the inner wall of the bottom of the leaching reaction chamber 100, the baffle plate 110 divides the leaching reaction chamber 100 into a reaction zone 120 and a filtering zone 130, and the reaction zone 120 is communicated with the filtering zone 130; the soil inlet 102 is disposed adjacent the reaction zone 120 and the wash waste outlet 103 is adjacent the filtration zone 130. The leaching solution entering from the lower part of the leaching reaction chamber 100 contacts with the soil entering from the upper part and is leached, the contact surface of the soil and the leaching solution can be improved by the contact mode, the generated leaching waste liquid flows out by an overflow mode, and the content of the soil in the leaching waste liquid can be reduced.
In order to improve the leaching efficiency, a stirrer 140 with blades is further arranged at the bottom of the reaction zone 120, one end of the stirrer 140 is fixed at the bottom of the reaction zone 120, and the other end of the stirrer 140 extends towards the top of the reaction zone 120, so that the leaching solution and the soil are fully contacted.
In order to further reduce the soil content in the leaching waste liquid, a leaching waste liquid filter layer 150 is arranged in the filtering area 130, and the leaching waste liquid is further filtered through the leaching waste liquid filter layer 150. The leaching waste liquid filter layer 150 is arranged between the inner side wall of the leaching reaction chamber 100 and the end part of the partition plate 110 away from the end part, and the leaching waste liquid filter layer 150 is arranged away from the bottom of the leaching reaction chamber 100, leaching waste liquid overflowed into the filtering area 130 is filtered by the leaching waste liquid filter layer 150, and the filtered leaching waste liquid enters the filtering area 130 and is discharged from the leaching waste liquid outlet. The filtered soil is returned to the reaction zone 120.
To improve the filtration efficiency, the leaching waste liquid filter layer 150 sequentially comprises from top to bottom: the leaching waste liquid sequentially passes through the first filter screen 151 to filter suspended matters and the like, the sand layer 152 to filter large particulate matters in the leaching waste liquid, the fine sand layer 153 to further filter small particulate matters, and the second filter screen 154.
Referring to fig. 1, a leaching waste liquid inlet 201 is formed above the side wall of the electrolytic reaction chamber 200, and the leaching waste liquid inlet 201 is communicated with a leaching waste liquid outlet 103 through a leaching waste liquid conveying pump 400; the lower part of the side wall of the electrolytic reaction chamber 200 corresponding to the leaching waste liquid inlet 201 is provided with a leaching regenerating liquid outlet 202.
An electrolysis reaction part is arranged in the electrolysis reaction chamber 200; the electrolytic reaction member includes: a cathode 210 and an anode 220 provided in the electrolytic reaction chamber 200, the cathode 210 and the anode 220 being connected by a power supply 230 provided outside the electrolytic reaction chamber 200. The power supply 230 is a direct current power supply, which provides electric energy for the electrolytic reaction solution in the electrolytic reaction chamber 200, and the constant voltage of the direct current power supply is 1-1.5v/cm.
Referring to fig. 1 and 2, a leaching and regenerating liquid water inlet 301 and a filtering liquid water outlet 302 are respectively arranged above two sides of a leaching and regenerating liquid storage chamber 300, and the leaching and regenerating liquid water inlet 301 is communicated with the leaching and regenerating liquid water outlet 202 through a leaching and regenerating liquid conveying pump 500; the filtrate water outlet 302 is communicated with the eluent water inlet 101 through a filtrate delivery pump 600, and the eluent regenerated liquid is filtered and then is input into the eluent reaction chamber 100 for leaching.
The eluting regeneration liquid storage chamber 300 is provided with an eluting regeneration liquid filter layer 310, and the eluting regeneration liquid is filtered by the eluting regeneration liquid filter layer 310. The two ends of the eluting regeneration liquid filter layer 310 are respectively fixed at the top and the bottom of the eluting regeneration liquid storage chamber 300, and the eluting regeneration liquid filter layer 310 is arranged close to the eluting regeneration liquid water inlet 301, so that the eluting regeneration liquid filter layer 310 divides the eluting regeneration liquid storage chamber 300 into an eluting regeneration liquid filter area and an eluting regeneration liquid storage area, and the storage area is larger. And a drain outlet 303 is further arranged below the side wall of the leaching regeneration liquid storage chamber 300, the drain outlet 303 is arranged on the same side as the leaching regeneration liquid water inlet 301, and sludge generated by leaching regeneration liquid filtration is discharged through the drain outlet 303.
To enhance the filtering effect of the rinse regenerant, the rinse regenerant filter layer 310 comprises, in order from right to left: filter cotton 311 and microporous filter membrane 312, wherein the microporous pore diameter of microporous filter membrane 312 is 0.3 μm to 0.8 μm. The filter cotton 311 filters the leached regenerated liquid, and then the microporous filter membrane 312 filters the leached regenerated liquid. The filter cotton 311 has wide sources and low price, and the service life of the microporous filter membrane 312 can be prolonged by filtering the filter cotton 311.
The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the utility model is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the utility model.
Claims (10)
1. A leaching-regenerating recycling device for soil heavy metals, comprising: the leaching reaction chamber (100), the electrolysis reaction chamber (200) and the leaching regeneration liquid storage chamber (300) are sequentially communicated;
a partition board (110) is arranged in the leaching reaction chamber (100), the partition board (110) is fixed on the inner wall of the bottom of the leaching reaction chamber (100), the partition board (110) divides the leaching reaction chamber (100) into a reaction zone (120) and a filtering zone (130), and the reaction zone (120) is communicated with the filtering zone (130);
a leacheate water inlet (101) is formed in the bottom of the leaching reaction chamber (100), and the leacheate water inlet (101) is communicated with a leacheate storage tank; a soil inlet (102) is formed above the side wall of the leaching reaction chamber (100), and the soil inlet (102) is arranged close to the reaction zone (120); a leaching waste liquid outlet (103) is formed below the side wall of the leaching reaction chamber (100), and the leaching waste liquid outlet (103) is close to the filtering area (130);
a leaching waste liquid water inlet (201) is formed above the side wall of the electrolytic reaction chamber (200), and the leaching waste liquid water inlet (201) is communicated with the leaching waste liquid water outlet (103) through a leaching waste water conveying pump (400); a leaching regenerating liquid outlet (202) is arranged below the side wall of the electrolytic reaction chamber (200) corresponding to the leaching waste liquid inlet (201); an electrolysis reaction piece is arranged in the electrolysis reaction chamber (200);
a leaching regenerating liquid water inlet (301) and a filtering liquid water outlet (302) are respectively arranged above two sides of the leaching regenerating liquid storage chamber (300), and the leaching regenerating liquid water inlet (301) is communicated with the leaching regenerating liquid water outlet (202) through a leaching regenerating liquid conveying pump (500); the filtrate water outlet (302) is communicated with the leacheate water inlet (101) through a filtrate delivery pump (600).
2. The leaching-regenerating recycling device for soil heavy metals according to claim 1, wherein a stirrer (140) with blades is further arranged at the bottom of the reaction zone (120), one end of the stirrer (140) is fixed at the bottom of the reaction zone (120), and the other end of the stirrer (140) extends towards the top of the reaction zone (120).
3. The leaching-regeneration recycling device for soil heavy metals according to claim 1, characterized in that a leaching waste liquid filter layer (150) is provided in the filtering zone (130).
4. A leaching-regenerating recycling device for soil heavy metals according to claim 3, characterized in that the leaching waste liquid filtering layer (150) is disposed between the inner side wall of the leaching reaction chamber (100) and the end of the partition plate (110), and the leaching waste liquid filtering layer (150) is disposed away from the bottom of the leaching reaction chamber (100).
5. The leaching-regenerating recycling device for soil heavy metals according to claim 3 or 4, wherein the leaching waste liquid filtering layer (150) comprises, in order from top to bottom: the sand filter comprises a first filter screen (151), a sand layer (152), a fine sand layer (153) and a second filter screen (154).
6. The leaching-regeneration recycling device for soil heavy metals according to claim 1, wherein the electrolytic reaction member comprises: and a cathode (210) and an anode (220) arranged in the electrolytic reaction chamber (200), wherein the cathode (210) and the anode (220) are communicated through a power supply (230) arranged outside the electrolytic reaction chamber (200).
7. The leaching-regenerating recycling device for soil heavy metals according to claim 1, wherein a leaching regenerating liquid filter layer (310) is arranged in the leaching regenerating liquid storage chamber (300), and two ends of the leaching regenerating liquid filter layer (310) are respectively fixed at the top and the bottom of the leaching regenerating liquid storage chamber (300).
8. The leaching-regenerating recycling device for soil heavy metals according to claim 7, wherein the leaching regenerating liquid filtering layer (310) is arranged close to the leaching regenerating liquid water inlet (301), a drain outlet (303) is further arranged below the side wall of the leaching regenerating liquid storage chamber (300), and the drain outlet (303) is arranged on the same side as the leaching regenerating liquid water inlet (301).
9. The leaching-regeneration recycling device for soil heavy metals according to claim 7 or 8, wherein the leaching regenerant filtration layer (310) comprises, in order from right to left: filter cotton (311) and a microporous filter membrane (312).
10. The leaching-regenerating recycling device for soil heavy metals according to claim 9, wherein the microporous filter membrane (312) has a microporous pore size of 0.3 μm to 0.8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321872445.XU CN220371903U (en) | 2023-07-17 | 2023-07-17 | Leaching-regenerating cyclic utilization device for soil heavy metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321872445.XU CN220371903U (en) | 2023-07-17 | 2023-07-17 | Leaching-regenerating cyclic utilization device for soil heavy metals |
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| Publication Number | Publication Date |
|---|---|
| CN220371903U true CN220371903U (en) | 2024-01-23 |
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ID=89559257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321872445.XU Active CN220371903U (en) | 2023-07-17 | 2023-07-17 | Leaching-regenerating cyclic utilization device for soil heavy metals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220371903U (en) |
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2023
- 2023-07-17 CN CN202321872445.XU patent/CN220371903U/en active Active
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