CN105632314A - Experiment apparatus for electrokinetic remediation and use method - Google Patents
Experiment apparatus for electrokinetic remediation and use method Download PDFInfo
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- CN105632314A CN105632314A CN201510745273.3A CN201510745273A CN105632314A CN 105632314 A CN105632314 A CN 105632314A CN 201510745273 A CN201510745273 A CN 201510745273A CN 105632314 A CN105632314 A CN 105632314A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000002474 experimental method Methods 0.000 title claims abstract description 23
- 238000009393 electroremediation Methods 0.000 title abstract 3
- 238000012360 testing method Methods 0.000 claims abstract description 69
- 239000002689 soil Substances 0.000 claims abstract description 43
- 238000004088 simulation Methods 0.000 claims abstract description 32
- 239000000523 sample Substances 0.000 claims abstract description 27
- 239000013535 sea water Substances 0.000 claims abstract description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000009545 invasion Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- -1 and analyze salinity Substances 0.000 claims 1
- 238000000429 assembly Methods 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 1
- 230000010412 perfusion Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/40—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for geology
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
Abstract
The invention relates to an experiment apparatus for electrokinetic remediation and a use method. The experiment apparatus includes an experiment test unit, a flow-gas detection unit and a power supply unit; the experiment test unit includes a test body, potential measuring probes and electrode assemblies, wherein the anode of one of the electrode assemblies is electrically connected with the positive pole of the power supply unit, the cathode of the other electrode assembly is electrically connected with the negative pole of the power supply unit; and the flow-gas detection unit includes a first test piece for testing liquid flow and a second test piece used for testing gas flow. The method includes the following steps that: fine sand is preprocessed; a simulated soil filling chamber is filled with clean fine sand particles; perfusion of a saturated NaCl solution is carried out; and voltage change between the potential measuring probes is measured through controlling variables. With the experiment apparatus for electrokinetic remediation and the use method of the invention adopted, laboratorial simulation of salinized and alkalinized soil suffering from seawater intrusion can be realized, and an experiment can be simple, accurate, automated and miniaturized. The device is low in cost.
Description
Technical field
The present invention relates to a kind of experimental facilities for electromotion repairing technique and using method, belong to wetland with saline-alkaline and repair field.
Background technology
The coastal area soil salinization caused by seawater invasion is the problem can not ignore now, and electro reclamation will play highly important effect in preventing and treating seawater invasion, and has become as one of future research trends.
External great majority are provided to relax the harm of seawater invasion for the analysis and research of seawater invasion control technology and method, wherein mainly by feeding or setting up the approach such as waterpower fence, namely in the side, inland being positioned at seawater invasion leading edge, the a series of drilling well of coastal layout, by to water filling in drilling well, or bled back by earth's surface channel, as the normal subsoil water in Fig. 4 and Fig. 5 respectively coastal area and sea water keep balance and mining of groundwater excessively to cause the schematic diagram of inwelling. Domestic but without studying report accordingly at present.
Electric repairing technique is applied relatively broad in the soil of remediating heavy metal ionic soil before this, every technology is comparatively ripe, to the control of parameters when carrying out electrophoresis, electrodialysis, if Fig. 6 is electromigration and EOF process, the analysis of each phase in soil, the selection of ion activation agent, recording of the selection etc. of the suitableeest voltage resistance is more. And the March in this year made a breakthrough the stronger feasibility more showing this similar technique in different field by the pilot plant test in Chinese a certain heavy metal pollution place adjusting institute of local section resource to undertake. Not enough condition is that experimental data and simulation experiment about electro reclamation salinization soil is less now, and in the selection of equipment and design, test the selection of related experiment condition and determine, the mensuration of data and analysis method are all letter problem to be solved.
Summary of the invention
The impact of each parameter cannot be accurately measured for current wetland with saline-alkaline laboratory simulation equipment, and there is equipment problem complicated, unhandy, the present invention propose a kind of can by the wetland with saline-alkaline laboratory simulation of seawater invasion, make the research experiment simplifications, accuracy, automatization, microminiaturization, and apparatus cost cheap be used for the experimental facilities of electromotion repairing technique and using method.
A kind of experimental facilities for electromotion repairing technique of the present invention, it is characterized in that: include experiment test unit, flow-gas detection cell and power supply supply unit, described experiment test unit includes test bodies, potentiometric measuring probe and electrode assemblie, described test bodies includes the electrode chamber and the centrally located simulation soil filling room that are positioned at two ends, and described simulation soil is loaded room and connected with the electrode chamber at two ends; Described simulation soil is loaded room and is arranged multiple jack for inserting potentiometric measuring probe; Each described electrode chamber is provided with corresponding water inlet, discharge outlet and air vent, and each described electrode chamber all configures an electrode assemblie; The anode of one of them described electrode assemblie and the positive pole of power supply supply unit are electrically connected, and the negative pole of the negative electrode of another described electrode assemblie and described power supply supply unit is electrically connected; Described flow-gas detection cell includes the first test block for measuring fluid flow and for testing the second test block of gas flow, the liquid outlet of the first described test block is connected with the water inlet pipeline of described electrode chamber, and the gas outlet of the second described test block connects with the air vent of described electrode chamber.
Described electrode assemblie includes active electrode, Passive electrode, electrode bar and electric connection, described electrode chamber is loaded room by vertically disposed Passive electrode and described simulation soil and is separated, described active electrode and described Passive electrode be arranged in parallel, and described active electrode and described Passive electrode leave therebetween gap; Described electrode bar is arranged on electrode chamber by electric connection, one end of two described electrode bars is connected with corresponding active electrode, the other end exposes test bodies and is connected with the power supply positive and negative electrode of power supply supply unit respectively so that two moving electrodes are respectively as the anode of tank house, negative electrode.
Described test bodies is H-shaped structure.
Described simulation soil is loaded the upper wall of room and is placed equidistant five jacks for inserting potentiometric measuring probe, and the probe end series voltage table of two of which potentiometric measuring probe is formed for measuring the series circuit of voltage between two potentiometric measuring probes.
Described Passive electrode covers holey electrode towards corresponding active electrode one side surface.
Described Passive electrode is electrically connected by the voltmeter of covered wire Yu power supply supply unit.
Described Simulated Soil room is affixed by the electrode chamber at long screw nail, wing nut and two ends, and is furnished with the O for sealing between Simulated Soil room and electrode chamber.
The first described test block is for being with graduated cylinder.
The second described test block is for being with graduated cylinder.
The first described test block and the second described test block are provided with controlling accordingly valve.
Described active electrode, described Passive electrode all adopt selection graphite electrode plate uniform cloth hole as electrode.
Described air vent is arranged on the top of electrode chamber, and the gap between air vent with active electrode and Passive electrode connects; Described water inlet is arranged on electrode chamber top, and described outlet is arranged on electrode chamber bottom.
A kind of using method utilizing experimental facilities of the present invention, described using method comprises the following steps:
1) fine sand being used for loading is carried out pretreatment: test simulation soil is husky for construction, clean after repeatedly and screen with the sieve of suitable sieve aperture after drying;
2) load chamber interior at simulation soil to load through step 1) process after clean fine sand granule as simulation soil;
3) the first test block utilizing flow-gas test unit irrigates the saturated NaCl solution being used as the saline Land problem that simulated seawater invasion causes in test bodies;
4) how many flows passed into mainly is detected and controls, the gas produced in experimentation is measured and is reclaimed by flow and gas detecting part, experiment can be provided electric energy by power supply energized part under voltage stabilizing or steady flow system situation, by controlling the salinity of flow-gas test unit, water content, impressed current, the operation time, measure the change in voltage between potentiometric measuring probe, and analyze salinity according to corresponding change in voltage, water content, pH value, electrical conductivity affects relation to the saline Land that simulated seawater invasion causes, by analyze between different probe not in the same time the size of voltage thus calculating ion mobility, migration rate according to ion draws analog salt alkali-affected soil recovery time, effect and impressed current relation.
The invention has the beneficial effects as follows: (1) solves electric repairing technique and is difficult to carry out the problem of experiment at laboratory, thus solving the limitation of this aspect research; (2) this device can be simulated wetland with saline-alkaline and carried out electro reclamation experiment so that the research of this process can carry out at laboratory; (3) this device both may be used for the simulation experiment teaching that Marine Chemistry is relevant, may be used for again the experimental teaching of wastewater treatment; (4) battery lead plate in the uniform cloth hole of this device selection ensure that EOF passes through electrode pad and enters room, pole and ensure that fluidised form is uniform; (5) select graphite electrode good conductivity, corrosion-resistant, do not introduce secondary pollution and easily process installation; (6) design of the gas testing device tested both had solved the problem that electro reclamation experimentation produces eudiometry, it is also possible to solve to produce the recovery problem of gas, effectively promoted experiment safety.
Accompanying drawing explanation
Fig. 1 is the flow chart of electro reclamation experimental provision system of the present invention;
Fig. 2 is H type unit configuration front view of the present invention;
Fig. 3 is the mesh electrodes plate schematic diagram of apparatus of the present invention;
Fig. 4 is the normal subsoil water in coastal area and sea water balance schematic diagram
Fig. 5 is that mining of groundwater excessively causes inwelling schematic diagram
Fig. 6 is electromigration and EOF schematic diagram.
Detailed description of the invention
The present invention is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
Embodiment 1 a kind of experimental facilities for electromotion repairing technique of the present invention, it is characterized in that: include experiment test unit 1, flow-gas detection cell 2 and power supply supply unit 3, described experiment test unit 1 includes test bodies 11, potentiometric measuring probe 12 and electrode assemblie 13, described test bodies 11 includes the electrode chamber 111 and the centrally located simulation soil filling room 112 that are positioned at two ends, and described simulation soil is loaded room 112 and connected with the electrode chamber 111 at two ends; Described simulation soil is loaded room 112 and is arranged multiple jack for inserting potentiometric measuring probe 12; Each described electrode chamber 111 is provided with corresponding water inlet 1111, discharge outlet 1112 and air vent 1113, and each described electrode chamber 111 all configures an electrode assemblie 13; The anode of one of them described electrode assemblie 13 and the positive pole of power supply supply unit 3 are electrically connected, and the negative electrode of another described electrode assemblie 13 and the negative pole of described power supply supply unit 3 are electrically connected; Described flow-gas detection cell 2 includes the first test block 21 for measuring fluid flow and for testing the second test block 22 of gas flow, the liquid outlet of the first described test block 21 is connected with water inlet 1111 pipeline of described electrode chamber 111, and the gas outlet of the second described test block 22 connects with the air vent 1113 of described electrode chamber 111.
Described electrode assemblie 13 includes active electrode 131, Passive electrode 132, electrode bar 133 and electric connection 134, described electrode chamber 111 is loaded room 112 by vertically disposed Passive electrode 132 and described simulation soil and is separated, described active electrode 131 be arranged in parallel with described Passive electrode 132, and described active electrode 131 leaves therebetween gap with described Passive electrode 132; Described electrode bar 133 is arranged on electrode chamber 111 by electric connection 134, one end of two described electrode bars 133 is connected with corresponding active electrode 131, the other end exposes test bodies 11 and is connected with the power supply positive and negative electrode of power supply supply unit 3 respectively so that two active electrodes 131 are respectively as the anode of tank house, negative electrode.
Described test bodies 11 is H-shaped structure.
Described simulation soil is loaded the upper wall of room 112 and is placed equidistant five jacks for inserting potentiometric measuring probe 12, the probe end 121 series voltage table of two of which potentiometric measuring probe 12, forms the series circuit for measuring 12 voltages of two potentiometric measuring probes.
Described Passive electrode 132 covers holey electrode 135 towards corresponding active electrode 131 1 side surface.
Described Passive electrode 132 is electrically connected by the voltmeter 31 of covered wire 136 with power supply supply unit 3.
Described Simulated Soil room 112 is affixed with the electrode chamber 111 at two ends by long screw nail 14, wing nut 15, and is furnished with the O 16 for sealing between Simulated Soil room 112 and electrode chamber 111.
The first described test block 21 is for being with graduated cylinder.
The second described test block 22 is for being with graduated cylinder.
The first described test block 21 and the second described test block 22 are provided with controlling accordingly valve
The using method of 2 one kinds of experimental facilitiess utilized described in embodiment 1 of embodiment, described using method comprises the following steps:
1) fine sand being used for loading is carried out pretreatment: test simulation soil is husky for construction, clean after repeatedly and screen with the sieve of suitable sieve aperture after drying;
2) load chamber interior at simulation soil to load through step 1) process after clean fine sand granule as simulation soil;
3) the first test block utilizing flow-gas test unit irrigates the saturated NaCl solution being used as the saline Land problem that simulated seawater invasion causes in test bodies;
4) how many flows passed into mainly is detected and controls, the gas produced in experimentation is measured and is reclaimed by flow and gas detecting part, experiment can be provided electric energy by power supply energized part under voltage stabilizing or steady flow system situation, by controlling the salinity of flow-gas test unit, water content, impressed current, the operation time, measure the change in voltage between potentiometric measuring probe, and analyze salinity according to corresponding change in voltage, water content, pH value, the electrical conductivity impact on the saline Land that simulated seawater invasion causes, by analyze between different probe not in the same time the size of voltage thus calculating ion mobility, migration rate according to ion draws analog salt alkali-affected soil recovery time, effect and impressed current relation.
Embodiment 3 test simulation soil is husky for construction, dries 5 hours after cleaning 7-8 time; First screen with 0.05mm aperture sieve again with 0.9mm aperture sieve. Screening fine sand passes into a certain amount of 35g/LNaCl solution (saturated solution), the reparation situation of NaCl contaminated soil it is subject to the simulation of this electro reclamation analog, in experiment, loaded room 1 and potentiometric measuring probe 12 by simulation soil extruded by soil and be divided into 5 parts, by analyzing the voltage between different probe, so that it is determined that electro reclamation situation. Experiment can draw some conclusions to measurements such as its salinity, water content, pH value, electrical conductivity and by analyzing by controlling the factor such as salinity, water content, impressed current, operation time, provides data and theoretical basis for correlational study.
It should be noted that contents such as mutual, the execution processes of information between said apparatus and intrasystem each unit, due to the inventive method embodiment based on same design, particular content referring to the narration in the inventive method embodiment, can repeat no more herein.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept; protection scope of the present invention is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also include those skilled in the art according to present inventive concept it is conceivable that equivalent technologies means.
Claims (10)
1. the experimental facilities for electromotion repairing technique, it is characterized in that: include experiment test unit, flow-gas detection cell and power supply supply unit, described experiment test unit includes test bodies, potentiometric measuring probe and electrode assemblie, described test bodies includes the electrode chamber and the centrally located simulation soil filling room that are positioned at two ends, and described simulation soil is loaded room and connected with the electrode chamber at two ends; Described simulation soil is loaded room and is arranged multiple jack for inserting potentiometric measuring probe; Each described electrode chamber is provided with corresponding water inlet, discharge outlet and air vent, and each described electrode chamber all configures an electrode assemblie; The anode of one of them described electrode assemblie and the positive pole of power supply supply unit are electrically connected, and the negative pole of the negative electrode of another described electrode assemblie and described power supply supply unit is electrically connected; Described flow-gas detection cell includes the first test block for measuring fluid flow and for testing the second test block of gas flow, the liquid outlet of the first described test block is connected with the water inlet pipeline of described electrode chamber, and the gas outlet of the second described test block connects with the air vent of described electrode chamber.
2. a kind of experimental facilities for electromotion repairing technique as claimed in claim 1, it is characterized in that: described electrode assemblie includes active electrode, Passive electrode, electrode bar and electric connection, described electrode chamber is loaded room by vertically disposed Passive electrode and described simulation soil and is separated, described active electrode and described Passive electrode be arranged in parallel, and described active electrode and described Passive electrode leave therebetween gap; Described electrode bar is arranged on electrode chamber by electric connection, one end of two described electrode bars is connected with corresponding active electrode, the other end exposes test bodies and is connected with the power supply positive and negative electrode of power supply supply unit respectively so that two moving electrodes are respectively as the anode of tank house, negative electrode.
3. a kind of experimental facilities for electromotion repairing technique as claimed in claim 2, it is characterised in that: described test bodies is H-shaped structure.
4. a kind of experimental facilities for electromotion repairing technique as claimed in claim 3, it is characterized in that: described simulation soil is loaded the upper wall of room and is placed equidistant five jacks for inserting potentiometric measuring probe, the probe end series voltage table of two of which potentiometric measuring probe, is formed for measuring the series circuit of voltage between two potentiometric measuring probes.
5. a kind of experimental facilities for electromotion repairing technique as claimed in claim 4, it is characterised in that: described Passive electrode covers holey electrode towards corresponding active electrode one side surface.
6. a kind of experimental facilities for electromotion repairing technique as claimed in claim 5, it is characterised in that: described Passive electrode is electrically connected by the voltmeter of covered wire Yu power supply supply unit.
7. a kind of experimental facilities for electromotion repairing technique as claimed in claim 1, it is characterized in that: described Simulated Soil room is affixed by the electrode chamber at long screw nail, wing nut and two ends, and is furnished with the O for sealing between Simulated Soil room and electrode chamber.
8. a kind of experimental facilities for electromotion repairing technique as claimed in claim 1, it is characterised in that: the first described test block is for being with graduated cylinder.
9. a kind of experimental facilities for electromotion repairing technique as claimed in claim 1, it is characterised in that: the second described test block is for being with graduated cylinder.
10. utilizing a using method for experimental facilities described in claim 1, described using method comprises the following steps:
1) fine sand being used for loading is carried out pretreatment: test simulation soil is husky for construction, clean after repeatedly and screen with the sieve of suitable sieve aperture after drying;
2) load chamber interior at simulation soil to load through step 1) process after clean fine sand granule as simulation soil;
3) the first test block utilizing flow-gas test unit irrigates the saturated NaCl solution being used as the saline Land problem that simulated seawater invasion causes in test bodies;
4) how many saturated NaCl solution flows passed into is detected and controls, the gas produced in experimentation is measured and is reclaimed by flow-gas detecting part; Experiment is provided electric energy by power supply energized part under voltage stabilizing or steady flow system situation, by controlling the flow-salinity of gas test unit, water content, impressed current, operation time, measure the change in voltage between potentiometric measuring probe, and analyze salinity, water content, pH value, the electrical conductivity impact on the saline Land that simulated seawater invasion causes according to corresponding change in voltage.
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| CN201510745273.3A CN105632314B (en) | 2015-11-05 | 2015-11-05 | A kind of experimental facilities and application method for electromotion repairing technique |
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| CN201510745273.3A CN105632314B (en) | 2015-11-05 | 2015-11-05 | A kind of experimental facilities and application method for electromotion repairing technique |
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| CN105632314A true CN105632314A (en) | 2016-06-01 |
| CN105632314B CN105632314B (en) | 2018-08-21 |
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| CN204338567U (en) * | 2014-11-13 | 2015-05-20 | 江阴市华宏盈飞电渗科技有限公司 | Based on the electric osmose system of the electro reclamation heavy-metal contaminated soil of plastic electrode |
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2015
- 2015-11-05 CN CN201510745273.3A patent/CN105632314B/en active Active
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| US5458747A (en) * | 1994-01-21 | 1995-10-17 | Electrokinetics, Inc. | Insitu bio-electrokinetic remediation of contaminated soils containing hazardous mixed wastes |
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| CN105632314B (en) | 2018-08-21 |
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