CN114749476A - Automatic cleaning system for soil electric remediation electrode and using method thereof - Google Patents
Automatic cleaning system for soil electric remediation electrode and using method thereof Download PDFInfo
- Publication number
- CN114749476A CN114749476A CN202210270993.9A CN202210270993A CN114749476A CN 114749476 A CN114749476 A CN 114749476A CN 202210270993 A CN202210270993 A CN 202210270993A CN 114749476 A CN114749476 A CN 114749476A
- Authority
- CN
- China
- Prior art keywords
- electrode
- cover
- soil
- pipe
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 67
- 239000002689 soil Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005067 remediation Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 88
- 238000005192 partition Methods 0.000 claims abstract description 29
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 9
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 8
- 231100000719 pollutant Toxicity 0.000 claims abstract description 8
- 230000020477 pH reduction Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000007667 floating Methods 0.000 claims description 15
- 238000004382 potting Methods 0.000 claims description 15
- 238000009393 electroremediation Methods 0.000 claims description 14
- 239000004677 Nylon Substances 0.000 claims description 9
- 229920001778 nylon Polymers 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 230000010287 polarization Effects 0.000 abstract description 15
- 230000008439 repair process Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000004913 activation Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an automatic cleaning system for an electrokinetic soil remediation electrode and a using method thereof. The electrode system adopts a layered structure, the outer shield can bear the pressure of a soil body and prevent larger particles of the soil from entering electrode liquid, gel for adsorbing a buffer medium is filled in a gap between the outer shield and the inner partition net cover, the effects of adsorbing pollutants such as heavy metal ions and balancing the pH of the electrode liquid can be achieved, the influence of alkalization/acidification of the electrode liquid on the soil is reduced, the electrode bar adopts a bar-shaped inert electrode and is matched with a cleaning module, the current reduction phenomenon caused by electrode activation polarization, resistance polarization and concentration polarization can be obviously improved, the energy consumption can be further reduced, the repair efficiency is improved, and the electrode system is particularly suitable for electric repair of the polluted soil.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to an automatic cleaning system for an electrokinetic soil remediation electrode and a using method of the automatic cleaning system.
Background
The electrokinetic remediation technology can treat soil and sediments of heavy metals, organic pollutants and composite pollutants, has wide application prospect, the electrode is indispensable equipment for electrokinetic remediation of the polluted soil, and after the electrokinetic remediation is carried out for a period of time, the current is obviously reduced relative to the initial current, so that the remediation efficiency is reduced, the energy consumption is increased, and the site application of the electrokinetic remediation is greatly restricted.
Studies have shown that the most important factor causing the current drop is the polarization of the electrodes: firstly, hydrogen and oxygen bubbles generated by hydrolysis reaction on the electrode cover the surface of the electrode, and the bubbles are good insulators and can obviously reduce the conductivity of the electrode, which is called as activation polarization; secondly, along with the test, insoluble salts or other impurities in the solution or the soil are adsorbed on the surface of the electrode to form a layer of deposited film, so that the conductivity of the electrode is reduced, and the current is reduced, which is called as resistance polarization; thirdly, hydrogen ions generated by the cathode and hydroxyl generated by the anode are enriched in respective electrode areas and are neutralized without diffusing in time, so that the current is reduced, and the concentration polarization is called. In addition, the electrolyzed water causes soil acidification near the anode area, which generally reduces the zeta potential, further causing reverse electroosmosis, thereby reducing remediation efficiency; the electrolytic water alkalifies the soil near the cathode area, and the heavy metal hydroxide generated by the combination of the heavy metal ions and the hydroxide ions generated by the cathode blocks the capillary pores of the soil, so that the material flow is blocked, and the remediation efficiency is reduced.
At present, for the problem of electrode polarization, there are methods of developing new materials, increasing electrode area and the like, but the problems of resistance increase, energy consumption increase, repair efficiency reduction and the like caused by electrode polarization are still not effectively solved. Aiming at the problems of soil acidity and basification, methods adopting microfiltration membranes and ion selective membranes exist, but the methods have the problems of short service life, easy blockage and the like, and can not effectively reduce the problems of soil acidity and basification caused by electrolysis and reduce the repair efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an automatic cleaning system for a soil electrokinetic remediation electrode and a using method thereof.
The technical scheme of the invention is as follows:
an automatic cleaning system for an electrokinetic soil remediation electrode and a using method thereof are disclosed, the system comprises an outer shield, an inner partition net cover, a cleaning module and an electrode body, wherein the inner partition net cover is arranged in the outer shield, the electrode body is vertically inserted into the inner partition net cover, and the cleaning module is arranged in the inner partition net cover and is used for cleaning the electrode body;
the outer protective cover comprises a conical cover and an outer net cylinder, and the conical cover is arranged at the lower end of the outer net cylinder;
the inner isolation mesh enclosure comprises a bottom plate, an inner side mesh cylinder, a cover plate, an electrode solution input pipe and a drain pipe; the cover plate is arranged at the top of the inner mesh cylinder, the bottom plate is arranged at the bottom of the inner mesh cylinder, the center positions of the bottom plate and the cover plate are provided with conical holes, and the conical holes in the cover plate are larger than the conical holes in the bottom plate; the electrode liquid input pipe and the drain pipe are arranged on the cover plate and are communicated with the inside of the inner side net cylinder; the cover plate is also provided with an exhaust hole;
The cleaning module comprises a motor, a screw rod, a T-shaped screw rod nut, a cleaning brush, a guide rod, an upper fixing plate and a lower fixing plate; the motor is fixed on the upper fixing plate, and the upper fixing plate is in a conical disc shape and is matched with the conical hole of the cover plate of the inner isolation mesh enclosure; the lower fixing plate is positioned right below the upper fixing plate, is in a conical disc shape and is matched with the conical hole of the bottom plate of the inner isolation mesh enclosure; the guide rod is fixedly arranged between the upper fixing plate and the lower fixing plate, the screw rod is rotatably arranged between the upper fixing plate and the lower fixing plate, the top end of the screw rod is connected with an output shaft of the motor, the T-shaped screw rod nut is arranged on the screw rod and the guide rod, and the cleaning brush is connected with the T-shaped screw rod nut; the upper fixing plate and the lower fixing plate are also provided with mounting holes for inserting the electrode bodies, the cleaning brush is sleeved on the electrode rods of the electrode bodies, and the cleaning brush is used for cleaning the electrode rods up and down in a reciprocating manner by controlling the motor to rotate forwards and backwards;
a liquid level sensor is arranged on the inner side mesh cylinder of the inner partition mesh cover and used for monitoring the liquid level of the electrolyte;
when in use, the method comprises the following steps:
(1) drilling a drill hole slightly larger than the outer diameter of the outer shield at the position of soil body needing to be provided with the electrode;
(2) Pressing the outer protective cover into the drill hole;
(3) injecting a volume of gel into the outer shield;
(4) the electrode body is arranged in the inner partition net cover, and then the inner partition net cover is integrally placed in the outer shield;
(5) connecting an external device: one end of an external cable penetrates through the rubber plug and the handheld pipe to be connected to the upper end of the waterproof cable joint, the handheld pipe is screwed into the potting pipe, and the rubber plug is screwed tightly; connecting the other end of the external cable to a direct current power supply; connecting a motor with a controller and a power supply, and connecting the power supply of the floating ball type liquid level sensor with a relay for controlling an external liquid adding device; connecting a sewage discharge pipe with an external water pumping device, and connecting an electrode liquid input pipe with an external liquid adding device;
(6) starting an external liquid adding device, and stopping the external liquid adding device from adding liquid by the floating ball type liquid level sensor through a control relay after the electrode liquid reaches the position of the floating ball type liquid level sensor; when the liquid level of the electrode liquid drops to a certain degree, the floating ball type liquid level sensor starts liquid adding of an external liquid adding device through a control relay and automatically stops when the liquid level reaches a preset liquid level;
(7) the motor controller controls the motor to realize timing start and stop and positive and negative rotation, the motor is started regularly according to field requirements during use, the motor drives the screw rod to rotate at regular intervals, the cleaning brush can reciprocate up and down on the electrode rod to play a role in cleaning the electrode rod, and meanwhile, the connecting piece and the cleaning brush can further play a role in stirring electrode liquid through up-and-down movement.
In the technical scheme, the material is nylon, the outer side net barrel can be supported, and the outer protective cover can be conveniently inserted into a soil body; the outer net barrel is made of a semi-rigid composite material net, and can bear the pressure of a soil body and prevent larger particles of the soil from entering electrode liquid; a circle of reinforcing edge is arranged at the upper end edge of the outer net barrel.
In the above technical scheme, the bottom plate and the cover plate are made of nylon.
In the technical scheme, the number of the exhaust holes is multiple, the exhaust holes are circumferentially arranged at equal intervals, and the gas generated by electrolysis can be effectively exhausted.
In the technical scheme, the electrode liquid input pipe and the blow-off pipe are made of non-metal materials such as PVC and are provided with the elbows to facilitate the external connection of the extension pipes.
In the technical scheme, the drain pipe extends to the bottom of the inner side net cylinder and can be connected with an external pumping device to pump out polluted electrode liquid.
In the technical scheme, the electrode body comprises an electrode rod, a short cable head, a cable waterproof joint, a potting pipe, potting epoxy resin, a handheld pipe and a waterproof rubber plug; the top end of the electrode rod is fixedly connected with one end of the short cable head, the other end of the short cable head is provided with the cable waterproof connector, and the short cable head can be conveniently connected with an external cable through the cable waterproof connector; the encapsulation pipe is sleeved at the top end of the electrode rod, and the encapsulation pipe is filled with encapsulation epoxy resin; the handheld pipe is inserted into the upper end of the filling and sealing pipe, and a waterproof rubber plug is embedded into an end opening at the top of the handheld pipe.
In the technical scheme, gel for adsorbing the buffer medium is filled in the gap between the outer protective cover and the inner partition net cover, so that the effects of adsorbing pollutants such as heavy metal ions and balancing the pH value of the electrode solution are achieved, and the influence of alkalization/acidification of the electrode solution on soil is reduced.
In the technical scheme, the active cleaning type electrode system for soil electric restoration further comprises a rain cover, and the rain cover is arranged on the handheld pipe, so that the motor can be protected, and rainwater is prevented from directly entering the electrode solution.
The invention has the advantages and positive effects that:
1. the electrode system is matched with the electrode rod cleaning module, so that the electrode rod can be cleaned at regular time: the cleaning brush can remove air bubbles on the surface of the electrode so as to reduce the activation polarization; the electrode solution can be stirred by the up-and-down movement of the cleaning brush, so that the concentration polarization is reduced, the problems of resistance increase, energy consumption increase, repair efficiency reduction and the like caused by electrode polarization are effectively reduced, the energy consumption is reduced, the repair efficiency is improved, and the electrode solution has remarkable economic benefit.
2. The electrode system adopts the multi-layer electrode shield, and the gel absorbing the buffer medium is filled between the shields, so that the electrode system can play a role in absorbing pollutants such as heavy metal ions and the like and balancing the pH of the electrode solution, and the influence on the soil due to the alkalization/acidification of the electrode solution is reduced, thereby further playing a role in improving the repair efficiency.
3. The electrode system can automatically supplement electrode liquid, so that the labor cost is reduced; the disassembly is convenient, and the assembly and the transportation are simple and convenient; the pointed-bottom cylindrical structure is adopted, so that the shape is regular and the arrangement is easy; the system can be used as a cathode or an anode, and has strong applicability; the rain cover is matched, so that the environmental suitability is strong.
Drawings
FIG. 1 is an assembled schematic view of the present invention;
FIG. 2 is a schematic structural view of an outer shroud of the present invention;
FIG. 3 is a schematic structural view of an inner partition net cover according to the present invention;
fig. 4 is a schematic structural view of an electrode body in the present invention;
FIG. 5 is a schematic diagram of the cleaning module of the present invention;
FIG. 6 is a schematic cross-sectional structural view of the present invention;
fig. 7 is a schematic cross-sectional view of another aspect of the present invention.
In the figure:
1. outer shield 2, interior partition screen panel 3, clean module
4. Electrode body 5, motor 6, motor mount
7. Screw 8, coupling 9, bearing
10. T-shaped screw rod nut 11, connecting piece 12 and cleaning brush
13. Guide rod 14, guide rod bearing 15 and upper fixing plate
16. Lower fixed plate 17, rain cover 18 and floating ball type liquid level sensor
19. Conical cover 20, outer net barrel 21 and reinforcing edge
22. Bottom plate 23, inner net barrel 24 and cover plate
25. Electrode liquid input pipe 26, sewage discharge pipe 27 and gel
28. Electrode bar 29.1, short cable head 30 and cable waterproof joint
31. Potting pipe 32, potting epoxy resin 33, hand-held pipe
34. Waterproof rubber plug 35, exhaust hole
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention in any way.
An automatic cleaning system for an electrokinetic soil remediation electrode and a using method thereof are shown in figure 1, and comprises an outer shield 1, an inner partition net cover 2, a cleaning module 3 and an electrode body 4, wherein the inner partition net cover 2 is arranged in the outer shield 1, the electrode body 4 is vertically inserted into the inner partition net cover 2, and the cleaning module 3 is arranged in the inner partition net cover 2 and is used for cleaning the electrode body 4. The structure of the present electrode system will be specifically described below.
Referring to fig. 2, the outer shield 1 comprises a conical shield 19, an outer mesh cylinder 20 and a reinforcing rim 21; the conical cover 19 is arranged at the lower end of the outer net cylinder 20, is made of nylon, can support the outer net cylinder 20 and is convenient for the outer protective cover 1 to be inserted into soil; the outer net barrel 20 is made of a semi-rigid composite material net, and can bear the pressure of a soil body and prevent larger particles of the soil from entering electrode liquid; the reinforcing rim 21 is provided at the upper end of the outer net drum 20.
Referring to fig. 3, the inner partition net cover 2 comprises a bottom plate 22, an inner side net cylinder 23, a cover plate 24, an electrode solution input pipe 25 and a sewage discharge pipe 26; the cover plate 24 is arranged at the top of the inner net cylinder 23, the bottom plate 22 is arranged at the bottom of the inner net cylinder 23, the inner net cylinder 23 is a semi-rigid composite material net and can further filter pollutants on the soil side, the bottom plate 22 and the cover plate 24 are made of nylon, conical holes are formed in the center positions of the bottom plate 22 and the cover plate 24, and the conical holes in the cover plate are larger than those in the bottom plate and are used for placing the electrode body and the cleaning module; the cover plate 24 is also provided with a plurality of vent holes 35 which are circumferentially arranged at equal intervals and can effectively discharge gas generated by electrolysis; the electrode liquid input pipe 25 and the drain pipe 26 are arranged on the cover plate 24 and communicated with the inside of the inner side net barrel 23, and the electrode liquid input pipe 25 can be connected with an external liquid adding device so as to supplement electrode liquid; blow off pipe 26 will extend to inboard net section of thick bamboo 23 bottom, and outside pumping device can be connected to blow off pipe 26, takes out the electrode liquid of pollution and carries out further processing, and electrode liquid input tube 25, blow off pipe 26 material are non-metallic material such as PVC to be furnished with the elbow and be convenient for external extension pipe.
Referring to fig. 4 and 6, the electrode body 4 includes an electrode bar 28, a short cable head 29.1, a cable waterproof joint 30, a potting tube 31, a potting epoxy resin 32, a handheld tube 33, and a waterproof rubber plug 34; the electrode bar 28 is made of titanium, platinum, stainless steel, graphite and the like, the top end of the electrode bar 28 is fixedly connected (connected in a welding or riveting mode and the like) with one end of the short cable head 29.1, the other end of the short cable head 29.1 is provided with the cable waterproof connector 30, and the cable waterproof connector 30 can be conveniently connected with an external cable 29.2, so that the transportation and the installation are convenient; the potting pipe 31 is sleeved at the top end of the electrode rod 28, and the potting epoxy resin 32 is filled in the potting pipe 31, so that the joint of the electrode rod 28 and the short cable head 29.1 is protected, and corrosion and disconnection are avoided; the handheld pipe 33 is inserted into the upper end of the potting pipe 31, and a waterproof rubber plug 34 is embedded into the top end of the handheld pipe 33 so as to further prevent rainwater and the like from entering the cable waterproof joint 30 in the handheld pipe 33; furthermore, the hand-held tube 33 and the filling and sealing tube 31 are made of non-metallic materials such as PVC.
Referring to fig. 5-7, the cleaning module 3 includes a motor 5, a motor fixing frame 6, a screw 7, a T-shaped screw nut 10, a connecting member 11, a cleaning brush 12, a guide rod 13, an upper fixing plate 15, and a lower fixing plate 16; the motor 5 is a stepping motor and has functions of timing start-stop and forward and reverse rotation control, the motor 5 is fixed on an upper fixing plate 15 through a motor fixing frame 6, the upper fixing plate 15 is in a conical disc shape and is matched with a conical hole of a cover plate 24 of the inner partition net cover 2, and the motor can be stably placed on the conical hole of the cover plate to form a detachable installation structure; the lower fixing plate 16 is positioned right below the upper fixing plate 15, the lower fixing plate 16 is also in a conical disc shape, is matched with the conical hole of the bottom plate 22 of the inner partition net cover 2, and can be stably placed on the conical hole of the bottom plate; the guide rods 13 are fixedly arranged between the upper fixing plate 15 and the lower fixing plate 16, and the number of the guide rods 13 is preferably two and the guide rods are arranged in parallel; the screw 7 is rotatably arranged between an upper fixing plate 15 and a lower fixing plate 16 through a bearing 9, the top end of the screw 7 is connected with an output shaft of the motor 5 through a coupling 8, so that the motor 5 can drive the screw 7 to rotate, the T-shaped screw nut 10 is arranged on the screw 7 and the guide rod 13 (the T-shaped screw nut is slidably arranged on the guide rod 13 through a guide rod bearing 14), and the screw 7 can drive the T-shaped screw nut 10 to move along the guide rod 13 when rotating; the cleaning brush 12 is connected with the T-shaped screw rod nut 10 through a connecting piece 11, and the cleaning brush 12 is cylindrical; mounting holes for mounting the electrode body 4 are further formed in the upper fixing plate 15 and the lower fixing plate 16, so that the electrode body 4 is vertically inserted into the upper fixing plate 15 and the lower fixing plate 16, the cleaning brush 12 is sleeved on the electrode rod 28 of the electrode body 4, and the cleaning brush 12 is used for cleaning the electrode rod 28 up and down in a reciprocating manner by controlling the motor 5 to rotate forward and backward. Further, the motor fixing frame 6 is made of stainless steel; the bearing 9 is made of ceramic, POM and other materials; the T-shaped screw rod nut 10 is made of POM; the guide rod bearing 14 is a fiber nylon linear bearing; the cleaning brush 12 is made of non-conductive nylon wire, sponge and the like; the connecting piece 11, the upper fixing plate 15 and the lower fixing plate 16 are made of nylon, polytetrafluoroethylene and the like.
Furthermore, the gap between the outer shield 1 and the inner partition net cover 2 is filled with gel 27 for absorbing buffer medium, which can absorb pollutants such as heavy metal ions and balance the pH of the electrode solution, thereby reducing the influence of alkalization/acidification of the electrode solution on the soil.
Further, the active cleaning type electrode system for soil electric restoration further comprises a rain cover 17 and a floating ball type liquid level sensor 18, wherein the rain cover 17 is arranged on the handheld pipe 33, so that the motor 5 can be protected, and rainwater is prevented from directly entering the electrode liquid; the floating ball type liquid level sensor 18 is arranged on an inner side mesh cylinder 23 of the inner partition mesh cover 2, can monitor the liquid level of electrolyte and is used for further controlling an external liquid adding device to realize liquid level control.
The electrode system adopts a layered structure, the outer shield 1 can bear the pressure of a soil body and prevent larger particles of the soil from entering electrode liquid, and gel 27 for adsorbing a buffer medium is filled in a gap between the outer shield 1 and the inner isolation mesh cover 2, so that the effects of adsorbing pollutants such as heavy metal ions and balancing the pH of the electrode liquid can be achieved, and the influence on the soil due to alkalization/acidification of the electrode liquid is reduced; the electrode bar 28 adopts a bar-shaped inert electrode and is matched with the cleaning module 3, so that the current reduction phenomenon caused by electrode activation polarization, resistance polarization and concentration polarization can be obviously improved, the effects of reducing energy consumption and improving the repair efficiency can be further achieved, and the method is particularly suitable for electrically repairing the polluted soil.
The using method of the automatic cleaning system for the soil electrokinetic remediation electrode comprises the following steps:
1. placing method
(1) Drilling a drill hole slightly larger than the outer diameter of the outer shield at the position of soil body needing to be provided with the electrode;
(2) pressing the outer shield into the drill hole;
(3) injecting a volume of gel into the outer shield;
(4) the electrode body is arranged into an inner isolation net cover, and then the inner isolation net cover is integrally placed into an outer shield;
(5) connecting an external device: one end of an external cable penetrates through the rubber plug and the handheld pipe is connected to the upper end of the waterproof cable joint, the handheld pipe is screwed into the potting pipe, and the rubber plug is screwed down; connecting the other end of the external cable to a direct current power supply; connecting a motor with a controller and a power supply, and connecting the power supply of the floating ball type liquid level sensor with a relay for controlling an external liquid adding device; the sewage discharge pipe is connected with an external water pumping device, and the electrode liquid input pipe is connected with an external liquid adding device.
2. Automatic fluid infusion method
Starting an external liquid adding device, and stopping the external liquid adding device from adding liquid by the floating ball type liquid level sensor through a control relay after the electrode liquid reaches the position of the floating ball type liquid level sensor; when the liquid level of the electrode liquid drops to a certain degree, the floating ball type liquid level sensor starts liquid adding of the external liquid adding device through the control relay and automatically stops after reaching the preset liquid level.
3. Active cleaning method
The motor controller controls the motor to realize timing start and stop and positive and negative rotation, the motor is started regularly according to field requirements during use, the motor drives the screw rod to rotate at regular intervals, the cleaning brush can reciprocate up and down on the electrode rod to play a role in cleaning the electrode rod, and meanwhile, the connecting piece and the cleaning brush can further play a role in stirring electrode liquid through up-and-down movement.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (9)
1. An automatic cleaning system for soil electrokinetic remediation electrodes and a using method thereof are characterized in that: the system comprises an outer shield, an inner partition net cover, a cleaning module and an electrode body, wherein the inner partition net cover is arranged in the outer shield, the electrode body is vertically inserted into the inner partition net cover, and the cleaning module is arranged in the inner partition net cover and used for cleaning the electrode body;
the outer protective cover comprises a conical cover and an outer net cylinder, and the conical cover is arranged at the lower end of the outer net cylinder;
the inner partition net cover comprises a bottom plate, an inner side net cylinder, a cover plate, an electrode liquid input pipe and a drain pipe; the cover plate is arranged at the top of the inner mesh cylinder, the bottom plate is arranged at the bottom of the inner mesh cylinder, tapered holes are formed in the center positions of the bottom plate and the cover plate, and the tapered holes in the cover plate are larger than the tapered holes in the bottom plate; the electrode liquid input pipe and the drain pipe are arranged on the cover plate and are communicated with the inside of the inner side net cylinder; the cover plate is also provided with an exhaust hole;
The cleaning module comprises a motor, a screw rod, a T-shaped screw rod nut, a cleaning brush, a guide rod, an upper fixing plate and a lower fixing plate; the motor is fixed on the upper fixing plate, and the upper fixing plate is in a conical disc shape and is matched with the conical hole of the cover plate of the inner isolation mesh enclosure; the lower fixing plate is positioned right below the upper fixing plate, is in a conical disc shape and is matched with the conical hole of the bottom plate of the inner isolation mesh enclosure; the guide rod is fixedly arranged between the upper fixing plate and the lower fixing plate, the screw rod is rotatably arranged between the upper fixing plate and the lower fixing plate, the top end of the screw rod is connected with an output shaft of the motor, the T-shaped screw rod nut is arranged on the screw rod and the guide rod, and the cleaning brush is connected with the T-shaped screw rod nut; the upper fixing plate and the lower fixing plate are also provided with mounting holes for inserting the electrode body, the cleaning brush is sleeved on an electrode rod of the electrode body, and the cleaning brush can clean the electrode rod up and down in a reciprocating manner by controlling the motor to rotate forwards and backwards;
a liquid level sensor is arranged on the inner side mesh cylinder of the inner partition mesh cover and used for monitoring the liquid level of the electrolyte;
when in use, the method comprises the following steps:
(1) drilling a drill hole slightly larger than the outer diameter of the outer shield at the position of soil body needing to be provided with the electrode;
(2) Pressing the outer protective cover into the drill hole;
(3) injecting a volume of gel into the outer shield;
(4) the electrode body is arranged in the inner partition net cover, and then the inner partition net cover is integrally placed in the outer shield;
(5) connecting an external device: one end of an external cable penetrates through the rubber plug and the handheld pipe to be connected to the upper end of the waterproof cable joint, the handheld pipe is screwed into the potting pipe, and the rubber plug is screwed tightly; connecting the other end of the external cable to a direct current power supply; connecting a motor with a controller and a power supply, and connecting the power supply of the floating ball type liquid level sensor with a relay for controlling an external liquid adding device; connecting a sewage discharge pipe with an external water pumping device, and connecting an electrode liquid input pipe with an external liquid adding device;
(6) starting an external liquid adding device, and stopping the external liquid adding device from adding liquid by the floating ball type liquid level sensor through a control relay after the electrode liquid reaches the position of the floating ball type liquid level sensor; when the liquid level of the electrode liquid drops to a certain degree, the floating ball type liquid level sensor starts liquid adding of an external liquid adding device through a control relay and automatically stops when the liquid level reaches a preset liquid level;
(7) the motor controller controls the motor to realize timing start and stop and positive and negative rotation, the motor is started regularly according to field requirements during use, the motor drives the screw rod to rotate at regular intervals, the cleaning brush can reciprocate up and down on the electrode rod to play a role in cleaning the electrode rod, and meanwhile, the connecting piece and the cleaning brush can further play a role in stirring electrode liquid through up-and-down movement.
2. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the conical cover is made of nylon, the outer side net barrel is made of a semi-rigid composite material net, and a circle of reinforcing edge is arranged at the upper end edge of the outer side net barrel.
3. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the bottom plate and the cover plate are made of nylon.
4. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the quantity in exhaust hole is a plurality of, is the circumference equidistant and arranges.
5. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the electrode liquid input pipe and the blow-off pipe are made of nonmetal materials such as PVC and are provided with elbows to facilitate external connection of extension pipes.
6. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the drain pipe extends to the bottom of the inner net cylinder and can be connected with an external pumping device to pump out polluted electrode liquid.
7. The automatic cleaning system for electrokinetic soil remediation electrodes and method of use thereof of claim 1, wherein: the electrode body comprises an electrode bar, a short cable head, a cable waterproof joint, a potting pipe, potting epoxy resin, a handheld pipe and a waterproof rubber plug; the top end of the electrode rod is fixedly connected with one end of the short cable head, the other end of the short cable head is provided with the cable waterproof connector, and the short cable head can be conveniently connected with an external cable through the cable waterproof connector; the encapsulation pipe is sleeved at the top end of the electrode rod, and the encapsulation pipe is filled with encapsulation epoxy resin; the handheld pipe is inserted into the upper end of the filling and sealing pipe, and a waterproof rubber plug is embedded into an end opening at the top of the handheld pipe.
8. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the gel for absorbing the buffer medium is filled in the gap between the outer protective cover and the inner partition net cover, so that the effects of absorbing pollutants such as heavy metal ions and balancing the pH value of the electrode solution are achieved, and the influence of alkalization/acidification of the electrode solution on the soil is reduced.
9. The automatic cleaning system for soil electrokinetic remediation electrodes and methods of using the same of claim 1, wherein: the active cleaning type electrode system for soil electric restoration further comprises a rain cover, the rain cover is arranged on the handheld pipe, a motor can be protected, and rainwater is prevented from directly entering electrode liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270993.9A CN114749476A (en) | 2022-03-18 | 2022-03-18 | Automatic cleaning system for soil electric remediation electrode and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270993.9A CN114749476A (en) | 2022-03-18 | 2022-03-18 | Automatic cleaning system for soil electric remediation electrode and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114749476A true CN114749476A (en) | 2022-07-15 |
Family
ID=82327304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210270993.9A Pending CN114749476A (en) | 2022-03-18 | 2022-03-18 | Automatic cleaning system for soil electric remediation electrode and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114749476A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201799448U (en) * | 2010-04-09 | 2011-04-20 | 中钢集团武汉安全环保研究院有限公司 | Combined electrode |
| JP2011177603A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Plastics Inc | Electrode well constituting pipe and method for producing the same |
| US20150353386A1 (en) * | 2014-06-10 | 2015-12-10 | Advanced Environmental Technologies, Llc | Bioelectrochemical devices for enhanced in situ bioremediation |
| CN106825029A (en) * | 2017-02-24 | 2017-06-13 | 成都科创城科技有限公司 | For soil environment restoration of the ecosystem and the equipment of monitoring |
| CN109731905A (en) * | 2019-03-01 | 2019-05-10 | 长江水利委员会长江科学院 | A kind of autonomous controllably soil or the electronic acidification device for dissociation of pollutants in sediments and method |
| CN210647720U (en) * | 2019-08-09 | 2020-06-02 | 南京迪天高新产业技术研究院有限公司 | Electronic restoration heavy metal contaminated soil device |
| CN113237923A (en) * | 2021-06-09 | 2021-08-10 | 华南农业大学 | Multi-sensor detection and cleaning device and cleaning method |
| CN113366306A (en) * | 2018-12-13 | 2021-09-07 | 哈美顿博纳图斯股份公司 | Composite electrode comprising a separator containing an aqueous gel and method for manufacturing such a composite electrode |
-
2022
- 2022-03-18 CN CN202210270993.9A patent/CN114749476A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177603A (en) * | 2010-02-26 | 2011-09-15 | Mitsubishi Plastics Inc | Electrode well constituting pipe and method for producing the same |
| CN201799448U (en) * | 2010-04-09 | 2011-04-20 | 中钢集团武汉安全环保研究院有限公司 | Combined electrode |
| US20150353386A1 (en) * | 2014-06-10 | 2015-12-10 | Advanced Environmental Technologies, Llc | Bioelectrochemical devices for enhanced in situ bioremediation |
| CN106825029A (en) * | 2017-02-24 | 2017-06-13 | 成都科创城科技有限公司 | For soil environment restoration of the ecosystem and the equipment of monitoring |
| CN113366306A (en) * | 2018-12-13 | 2021-09-07 | 哈美顿博纳图斯股份公司 | Composite electrode comprising a separator containing an aqueous gel and method for manufacturing such a composite electrode |
| CN109731905A (en) * | 2019-03-01 | 2019-05-10 | 长江水利委员会长江科学院 | A kind of autonomous controllably soil or the electronic acidification device for dissociation of pollutants in sediments and method |
| CN210647720U (en) * | 2019-08-09 | 2020-06-02 | 南京迪天高新产业技术研究院有限公司 | Electronic restoration heavy metal contaminated soil device |
| CN113237923A (en) * | 2021-06-09 | 2021-08-10 | 华南农业大学 | Multi-sensor detection and cleaning device and cleaning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106140809B (en) | A kind of device and method using combination electrode repairing polluted soil and underground water | |
| CN210505699U (en) | Portable electric flocculation device | |
| CN218252135U (en) | Electrode system for active cleaning type soil electric remediation | |
| CN114749476A (en) | Automatic cleaning system for soil electric remediation electrode and using method thereof | |
| CN211521948U (en) | Electrochemistry microorganism carousel low concentration heavy metal waste water purifies and recovery unit | |
| CN204514665U (en) | A kind of water quality monitoring sampler | |
| CN215745485U (en) | Electrode assembly for heavy metal contaminated soil treatment and electric repair system | |
| CN202530174U (en) | Device for recycling silver in laboratory | |
| CN210085170U (en) | Electrochemical sewage treatment device combining chemistry and physics | |
| CN213679960U (en) | Novel electric air flotation device | |
| CN202576054U (en) | Three-dimensional electrode reaction device | |
| CN214496477U (en) | Device for directly and chemically plating nickel on silver layer at end of SMD magnetic core | |
| CN111804028A (en) | Annular combined backwashing water filter | |
| CN111285513A (en) | High-efficient type sewage treatment system based on electrolysis air supporting | |
| CN207552079U (en) | A kind of electrolytic multilayer filtering type apparatus for treating sewage | |
| CN217808860U (en) | Easy abluent electrolytic device | |
| CN212334691U (en) | High-chlorine high-ammonia nitrogen wastewater treatment device with three-dimensional electrode | |
| CN108892195A (en) | A kind of waste heat recovery apparatus | |
| CN219950715U (en) | Energy-saving environment-friendly microbial sewage treatment device | |
| CN211635546U (en) | Thermal stable salt removing device with energy conservation and environmental protection | |
| CN220317491U (en) | Electrochemical sewage treatment device | |
| CN211367761U (en) | Machine is retrieved in electrolysis convenient to wash | |
| CN219031963U (en) | Chlorine removal installation | |
| CN217972690U (en) | Iron-carbon micro-electrolysis reactor | |
| CN220246295U (en) | Chain electrophoresis mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220715 |