A process for treating acidic mine wastewater using electrochemical principles

Abstract

The present invention discloses a process for treating acidic mine wastewater by using the electrochemical principle, which relates to the technical field of wastewater treatment and includes a housing, a top cover, a power supply wire, and a second conductive block. The second conductive block is fixedly connected to the top cover. The bottom end of the inner wall of the housing is fixedly connected with a fixed cylinder, and two biochar electrodes are symmetrically arranged inside the fixed cylinder. The two biochar electrodes are respectively located below the two second conductive blocks. A docking mechanism is arranged on the top cover, and the docking mechanism is used for replacing the biochar electrodes. By setting the biochar electrodes, the two biochar electrodes are divided into an anode and a cathode through the connected wires. After the two biochar electrodes undergo an electro-chemical reaction, impurities in the sewage can be separated from the water and precipitated, and a removal rate of more than 99% of the impurities in the sewage can be achieved. The operation is simple and efficient, and the efficient treatment of acidic mine wastewater can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and specifically to a process for treating acidic mine wastewater using the principle of electrochemistry. Background Art

[0002] Electrochemistry is the science that studies the charged interface phenomena formed by two types of conductors and the changes that occur thereon. The interaction between electricity and chemical reactions can be completed through a battery or achieved by using high-voltage electrostatic discharge (such as the conversion of oxygen to ozone through a silent discharge tube). Both are collectively referred to as electrochemistry. The latter is a branch of electrochemistry called discharge electrochemistry. Mine wastewater is the general term for natural leachate water in mines, ore dressing wastewater, overflow water from the dikes of ore dressing waste residues, and leachate water from slag dumps, etc.

[0003] In order to be able to treat acidic mine wastewater and thus avoid the pollution of the surrounding environment by acidic mine wastewater, the X-ray absorption spectrum of the reaction precipitate is obtained based on synchrotron radiation technology, the reaction products are judged by referring to the XRD results based on LCF analysis, and the information obtained from XPS and SEM / EDX is referred to during the analysis process to achieve the removal of heavy metals from wastewater by using a biochar electrode. Based on the above principle, during the use of the biochar electrode, the biochar electrode needs to be replaced regularly. In order to reduce the replacement time of the biochar electrode and thus be able to further improve the treatment efficiency of sewage, for this reason, we have proposed a process for treating acidic mine wastewater using the principle of electrochemistry. Summary of the Invention

[0004] The purpose of the present invention is to provide a process for treating acidic mine wastewater using the principle of electrochemistry in order to achieve the purpose of further improving the sewage treatment efficiency.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A process for treating acidic mine wastewater using the principle of electrochemistry, including a housing, the outer wall of the top end of the housing is sleeved with a top cover, two power supply wires are symmetrically arranged at the top end of the top cover, the bottom ends of the two power supply wires are fixedly connected with second conductive blocks that penetrate through the top cover to the inside of the housing, the second conductive blocks are fixedly connected with the top cover, the bottom end inner wall of the housing is fixedly connected with a fixed cylinder, two biochar electrodes are symmetrically arranged inside the fixed cylinder, the two biochar electrodes are respectively located below the two second conductive blocks, and a docking mechanism is arranged on the top cover, and the docking mechanism is used for replacing the biochar electrodes;

[0006] The docking mechanism includes: a positioning component and a fixing component; the positioning component arranged below the top cover is used for clamping and positioning the biochar electrode; the fixing component arranged inside the top cover is used for clamping and fixing the positioning component; a filtering mechanism sleeved on the outer walls of the two biochar electrodes is arranged inside the housing, and the filtering mechanism is used for filtering the water flow;

[0007] The positioning component includes: two docking sockets respectively fixedly connected to the bottoms of the two second conductive blocks. Both of the two docking sockets are located below the top cover. An electromagnet is fixedly connected to the bottom end of the docking socket. A first plug board is fixedly connected to the top end of each of the two biochar electrodes. A docking sleeve seat is arranged below the top cover and is horizontally slidably connected to the first plug board, the second conductive block, and the docking socket. A first conductive block fixedly connected to the docking sleeve seat is arranged on the upper surface of each of the two first plug boards. A conductive sliding disk slidably connected to the docking sleeve seat in the up-and-down direction is sleeved on the outer wall of the top end of the first conductive block. The conductive sliding disk is in contact with the lower surface of the electromagnet. A first baffle slidably connected to the docking sleeve seat in the up-and-down direction is arranged above the first plug board. A first plug rod integrally formed at the bottom end of the first baffle penetrates through the docking sleeve seat and is snap-connected to the first plug board. A first spring is arranged on the upper surface of the first baffle. The two ends of the first spring are respectively in contact with the inner wall of the docking sleeve seat and the outer wall of the first baffle.

[0008] As a further scheme of the present invention: The fixing component includes: a lifting sliding plate sleeved on the outer walls of the two second conductive blocks and slidably connected to the top cover in the up-and-down direction. A connecting pushing ring slidably connected to the top cover in the up-and-down direction is integrally formed on the outer wall of the lifting sliding plate. The connecting pushing ring penetrates through the top cover and is in contact with the upper surface of the outer shell. A lifting sliding column integrally formed at the bottom end of the lifting sliding plate penetrates through the top cover to the inside of the docking sleeve seat. A positioning chuck slidably connected to the docking sleeve seat is integrally formed at the bottom end of the lifting sliding column. A plurality of fixing blocks penetrating to the inside of the positioning chuck are circumferentially formed at the top end of the inner wall of the docking sleeve seat.

[0009] As a further scheme of the present invention: The filtering mechanism includes: a moving sleeve disk arranged inside the outer shell. The moving sleeve disk is horizontally slidably connected to the two biochar electrodes and is in contact with the upper surface of the fixed cylinder. A plurality of sieve holes penetrating to the outside of the bottom end are circumferentially formed at the top end of the moving sleeve disk. A second plug board slidably connected to the docking sleeve seat horizontally is integrally formed at the top end of the moving sleeve disk. A second baffle slidably connected to the docking sleeve seat in the up-and-down direction is arranged above the second plug board. A second plug rod integrally formed at the bottom end of the second baffle penetrates through the docking sleeve seat and is snap-connected to the second plug board. A second spring is arranged on the upper surface of the second baffle. The two ends of the second spring are respectively in contact with the outer wall of the second baffle and the inner wall of the docking sleeve seat. An arc-shaped pushing plate is arranged on the outer wall of the moving sleeve disk. Sealing sleeve plates slidably connected to the moving sleeve disk are integrally formed at both ends of the arc-shaped pushing plate. The sealing sleeve plates are in contact with the outer walls of the biochar electrodes. Two limiting sliding plates slidably connected to the moving sleeve disk are symmetrically formed on the outer walls of the sealing sleeve plates. A bolt penetrating through the arc-shaped pushing plate and threadedly connected to the moving sleeve disk is arranged on the side of the arc-shaped pushing plate away from the moving sleeve disk.

[0010] As a further solution of the present invention: feeding pipes and discharging pipes are symmetrically arranged on the outer wall of the outer shell. The feeding pipes penetrate through the outer shell to the inside of the fixed cylinder, and the discharging pipes penetrate to the inside of the outer shell. The feeding pipes and discharging pipes are fixedly connected to the outer shell and the fixed cylinder.

[0011] As a further solution of the present invention: the outer walls of the upper and lower ends of the docking plug disc are both beveled. The shape of the first plug board is T-shaped, and the outer wall of one side of the first plug board is in the shape of a square platform. A moving slot for the first plug board, the second conductive block, and the docking plug disc to slide is provided on the docking socket.

[0012] As a further solution of the present invention: a limiting ring is integrally formed on the outer wall of the conductive sliding disc. A lifting chute for the conductive sliding disc and the limiting ring to slide up and down is provided on the docking socket.

[0013] As a further solution of the present invention: the outer wall of the bottom end of the fixed clamping block is hemispherical. The outer walls of the upper and lower ends of the positioning chuck are both beveled. A docking socket groove that matches the outer wall of the fixed clamping block is provided on the positioning chuck.

[0014] As a further solution of the present invention: a sealing rubber ring that contacts the lower surface of the moving sleeve disc is fixedly connected to the top end of the fixed cylinder. The shape of the second plug board is T-shaped, and the outer wall of one side of the second plug board is in the shape of a square platform. A sliding slot for the second plug board to slide is provided on the docking socket.

[0015] As a further solution of the present invention: the outer walls of the bottom ends of the first plug rod and the second plug rod are both hemispherical. Positioning card slots that match the outer walls of the first plug rod and the second plug rod are provided on the first plug board and the second plug board. A moving chute for the first baffle, the first plug rod, the second baffle, and the second plug rod to slide up and down is provided on the docking socket.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting biochar electrodes, and the two biochar electrodes are divided into an anode and a cathode through the connected wires. After the two biochar electrodes are electrified and react, impurities in the sewage can be separated from the water and precipitated, and a removal rate of more than 99% of the impurities in the sewage can be achieved. Its operation is simple and efficient, and the efficient treatment of acidic mine wastewater can be realized.

[0018] 2. By setting up the docking mechanism, pushing the two biochar electrodes to insert the two first plug plates into the inside of the docking socket. At this time, through the cooperation of the first plug rod, the first baffle plate, and the first spring, the first plug plates are clamped and positioned. Then, through the cooperation of the second conductive block, the positioning chuck, the docking plug plate, and the lifting sliding column, the docking socket can be connected to the top cover, and the filtering mechanism can be connected and fixed to the biochar electrodes. After that, the two biochar electrodes carry out chemical reactions on the sewage, so that the impurities in the sewage can be separated from the water and precipitated. When the biochar electrodes need to be replaced, reverse the above operations at this time, and the biochar electrodes can be quickly replaced, thus achieving the purpose of further improving the sewage treatment efficiency. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the outer shell and the fixed cylinder of the present invention;

[0021] Figure 3 is a schematic cross-sectional structural diagram of the top cover of the present invention;

[0022] Figure 4 is a schematic cross-sectional structural diagram of the docking socket of the present invention;

[0023] Figure 5 is a schematic structural diagram of the filtering mechanism of the present invention;

[0024] Figure 6 of the present invention Figure 3 is a partially enlarged structural diagram at A in;

[0025] Figure 7 of the present invention Figure 4 is a partially enlarged structural diagram at B in.

[0026] In the figure: 1. Outer shell; 2. Docking mechanism; 201. Lifting slide plate; 202. Connecting push ring; 203. Docking socket; 204. First plug plate; 205. First conductive block; 206. Conductive sliding disk; 207. First plug rod; 208. First baffle plate; 209. First spring; 2010. Electromagnet; 2011. Positioning chuck; 2012. Docking plug plate; 2013. Fixed clamping block; 2014. Lifting sliding column; 3. Filtering mechanism; 301. Moving sleeve disk; 302. Second plug plate; 303. Sealing sleeve plate; 304. Arc-shaped push plate; 305. Bolt; 306. Limit sliding plate; 307. Second plug rod; 308. Second baffle plate; 309. Second spring; 4. Feed pipe; 5. Discharge pipe; 6. Top cover; 7. Power supply wire; 8. Fixed cylinder; 9. Biochar electrode; 10. Second conductive block. Detailed Description of the Invention

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to its overall structure.

[0029] Please refer to Figures 1 to 7 , in the embodiment of the present invention, a process for treating acidic mine wastewater using the electrochemical principle includes a housing 1. The top outer wall of the housing 1 is sleeved with a top cover 6. Two power supply wires 7 are symmetrically arranged at the top of the top cover 6. The bottom ends of the two power supply wires 7 are fixedly connected to second conductive blocks 10 that penetrate the top cover 6 and extend into the interior of the housing 1. The second conductive blocks 10 are fixedly connected to the top cover 6. The bottom end inner wall of the housing 1 is fixedly connected to a fixed cylinder 8. Two biochar electrodes 9 are symmetrically arranged inside the fixed cylinder 8. The two biochar electrodes 9 are respectively located below the two second conductive blocks 10. The outer wall of the housing 1 is symmetrically provided with a feed pipe 4 and a discharge pipe 5. The feed pipe 4 penetrates the housing 1 and extends into the interior of the fixed cylinder 8. The discharge pipe 5 penetrates into the interior of the housing 1. The feed pipe 4 and the discharge pipe 5 are fixedly connected to the housing 1 and the fixed cylinder 8. A docking mechanism 2 is provided on the top cover 6. The docking mechanism 2 is used for replacing the biochar electrodes 9.

[0030] The docking mechanism 2 includes: a positioning component and a fixing component; the positioning component arranged below the top cover 6 is used for clamping and positioning the biochar electrode 9; the fixing component arranged inside the top cover 6 is used for clamping and fixing the positioning component; a filtering mechanism 3 sleeved on the outer walls of the two biochar electrodes 9 is arranged inside the housing 1, and the filtering mechanism 3 is used for filtering the water flow.

[0031] The positioning component includes: two docking sockets 2012 respectively fixedly connected to the bottoms of the two second conductive blocks 10. Both of the two docking sockets 2012 are located below the top cover 6. An electromagnet 2010 is fixedly connected to the bottom end of the docking socket 2012. The top ends of the two biochar electrodes 9 are fixedly connected with first plug plates 204. A docking socket base 203 which is horizontally slidably connected to the first plug plates 204, the second conductive blocks 10 and the docking sockets 2012 is arranged below the top cover 6. First conductive blocks 205 fixedly connected to the docking socket base 203 are arranged on the upper surfaces of the two first plug plates 204. A conductive sliding disc 206 which is vertically slidably connected to the docking socket base 203 is sleeved on the outer wall of the top end of the first conductive block 205. The conductive sliding disc 206 is in contact with the lower surface of the electromagnet 2010. A first baffle 208 which is vertically slidably connected to the docking socket base 203 is arranged above the first plug plate 204. A first plug rod 207 which penetrates through the docking socket base 203 and is clamped and connected to the first plug plate 204 is integrally formed at the bottom end of the first baffle 208. A first spring 209 is arranged on the upper surface of the first baffle 208. The two ends of the first spring 209 are respectively in contact with the inner wall of the docking socket base 203 and the outer wall of the first baffle 208. A limiting ring is integrally formed on the outer wall of the conductive sliding disc 206. A lifting chute for the vertical sliding of the conductive sliding disc 206 and the limiting ring is formed on the docking socket base 203.

[0032] The fixing component includes: a lifting slide plate 201 sleeved on the outer walls of the two second conductive blocks 10 and vertically slidably connected to the top cover 6. A connecting push ring 202 which is vertically slidably connected to the top cover 6 is integrally formed on the outer wall of the lifting slide plate 201. The connecting push ring 202 penetrates through the top cover 6 and is in contact with the upper surface of the housing 1. A lifting slide column 2014 which penetrates through the top cover 6 to the inside of the docking socket base 203 is integrally formed at the bottom end of the lifting slide plate 201. A positioning chuck 2011 which is slidably connected to the docking socket base 203 is integrally formed at the bottom end of the lifting slide column 2014. A plurality of fixing blocks 2013 which penetrate to the inside of the positioning chuck 2011 are circumferentially formed at the top end of the inner wall of the docking socket base 203.

[0033] In this embodiment: When using this device, two biochar electrodes 9 are respectively pushed so that two first plug boards 204 are inserted into the inside of the docking socket 203. During this process, under the extrusion of the first plug board 204, the first plug rod 207 pushes the first baffle 208 to rise along the inner wall of the docking socket 203. At the same time, the first baffle 208 contracts by moving and extruding the first spring 209, and the first plug board 204 contacts the lower surface of the first conductive block 205. When the first plug board 204 contacts the inner wall of one side of the docking socket 203, at this time, the first spring 209 rebounds to push the first baffle 208 so that the first plug rod 207 is snapped into the inside of the docking socket 203, and the first plug board 204 can be clamped and positioned, facilitating the convenient plugging of the docking socket 203 and the two biochar electrodes 9.

[0034] After that, the docking socket 203 is pushed to sleeve the outer walls of the second conductive block 10, the positioning chuck 2011, the docking plug board 2012, and the lifting sliding column 2014. When the inner wall of one side of the docking socket 203 contacts the outer walls of the second conductive block 10, the positioning chuck 2011, the docking plug board 2012, and the lifting sliding column 2014, at this time, stop pushing the docking socket 203 and connect and fix the filtering mechanism 3 and the biochar electrode 9. Then, the top cover 6 is moved directly above the outer shell 1 through a lifting tool. At the same time, the two biochar electrodes 9 move synchronously under the drive of the top cover 6 through the docking socket 203 and the first plug board 204. Then, the top cover 6 is vertically lowered through the lifting tool, and the biochar electrode 9 descends into the inside of the fixed cylinder 8 until the top cover 6 contacts the upper surface of the outer shell 1. During this process, the connecting push ring 202 is blocked by the outer shell 1 and pushes the lifting slide plate 201 to slide along the inner wall of the top cover 6 and the outer wall of the second conductive block 10. At the same time, the positioning chuck 2011 slides along the inner wall of the docking socket 203 under the drive of the lifting slide plate 201 through the lifting sliding column 2014. When the top cover 6 completely sleeves the top outer wall of the outer shell 1, at this time, the positioning chuck 2011 sleeves a plurality of fixed blocks 2013, effectively preventing the docking socket 203 from shifting during the sewage treatment process.

[0035] At the same time, the top of the fixed cylinder 8 can be covered by the filtering mechanism 3. Then, sewage is conveyed into the inside of the fixed cylinder 8 through the feed pipe 4. At the same time, power is supplied to the electromagnet 2010 through the power supply wire 7, the second conductive block 10, and the docking plug board 2012. At this time, the conductive sliding plate 206 is attracted by the electromagnet in the electromagnet 2010 and drives the limit ring to slide along the inner wall of the docking socket 203 and the outer wall of the first conductive block 205 until the conductive sliding plate 206 contacts the outer wall of the electromagnet 2010. At this time, the electromagnet 2010 can supply power to the biochar electrode 9 through the conductive sliding plate 206, the first conductive block 205, and the first plug board 204.

[0036] At this time, through the cooperation of the anode and the cathode, the two biochar electrodes 9 can carry out chemical reactions on the sewage, so that the impurities in the sewage can be separated from the water and precipitate and dock inside the fixed cylinder 8. At the same time, through the long-term contact between the sewage and the biochar electrodes 9, the treatment effect on the sewage can be further improved. When the treated water contacts the lower surface of the movable sleeve plate 301 under the blockage of the inner wall of the fixed cylinder 8, at this time, the water flows through the sieve holes on the movable sleeve plate 301 through the filtering mechanism 3 to the outside of the fixed cylinder 8, and the water located outside the fixed cylinder 8 is transported through the discharge pipe 5 for convenient collection of the water.

[0037] When it is necessary to replace the biochar electrode 9, reverse the above operations at this time, and the biochar electrode 9 can be quickly replaced, so as to achieve the purpose of further improving the sewage treatment efficiency.

[0038] As a preferred embodiment of the present invention, the filtering mechanism 3 includes: a movable sleeve plate 301 arranged inside the housing 1, the movable sleeve plate 301 is horizontally slidably connected to the two biochar electrodes 9 and is in contact with the upper surface of the fixed cylinder 8. A plurality of sieve holes penetrating to the outside of the bottom end are circumferentially formed at the top end of the movable sleeve plate 301. A second insertion plate 302 integrally formed with the docking sleeve seat 203 is horizontally slidably connected to the top end of the movable sleeve plate 301. Above the second insertion plate 302, there is a second baffle plate 308 slidably connected to the docking sleeve seat 203 up and down. A second insertion rod 307 integrally formed at the bottom end of the second baffle plate 308 penetrates through the docking sleeve seat 203 and is snap-connected to the second insertion plate 302. A second spring 309 is arranged on the upper surface of the second baffle plate 308, and the two ends of the second spring 309 are respectively in contact with the outer wall of the second baffle plate 308 and the inner wall of the docking sleeve seat 203. An arc-shaped push plate 304 is arranged on the outer wall of the movable sleeve plate 301. Sealing sleeve plates 303 slidably connected to the movable sleeve plate 301 are integrally formed at both ends of the arc-shaped push plate 304. The sealing sleeve plates 303 are in contact with the outer walls of the biochar electrodes 9. Two limiting sliding plates 306 slidably connected to the movable sleeve plate 301 are symmetrically formed on the outer walls of the sealing sleeve plates 303. A bolt 305 penetrating through the arc-shaped push plate 304 and threadedly connected to the movable sleeve plate 301 is arranged on the side of the arc-shaped push plate 304 away from the movable sleeve plate 301. A sealing rubber ring in contact with the lower surface of the movable sleeve plate 301 is fixedly connected to the top end of the fixed cylinder 8. The outer shape of the second insertion plate 302 is T-shaped, and the outer wall of one side of the second insertion plate 302 is in the shape of a square platform. A sliding slot for the second insertion plate 302 to slide is formed on the docking sleeve seat 203. The outer walls of the bottom ends of the first insertion rod 207 and the second insertion rod 307 are both hemispherical. Positioning card slots that match the outer walls of the first insertion rod 207 and the second insertion rod 307 are formed on the first insertion plate 204 and the second insertion plate 302 respectively. A moving slot for the first baffle plate 208, the first insertion rod 207, the second baffle plate 308, and the second insertion rod 307 to slide up and down is formed on the docking sleeve seat 203.

[0039] In this embodiment: By pushing the movable sleeve plate 301 to sleeve the outer walls of the two biochar electrodes 9, at the same time, the second plug board 302 is driven by the movable sleeve plate 301 and inserted into the inside of the docking socket 203. When the movable sleeve plate 301 contacts the outer wall of the biochar electrode 9, at this time, the pushing arc-shaped push plate 304 is closely attached to the outer wall of the movable sleeve plate 301. At the same time, the two sealing sleeve plates 303 are slidably inserted into the inside of the movable sleeve plate 301 through the limiting sliding plates 306 until the sealing sleeve plates 303 contact the outer wall of the biochar electrode 9. Then, the rotating bolt 305 passes through the arc-shaped push plate 304 and is threadedly connected to the movable sleeve plate 301, and the arc-shaped push plate 304 can be fixed, thereby realizing the convenient fixation of the movable sleeve plate 301. When the second plug board 302 descends synchronously with the biochar electrode 9, under the extrusion of the docking socket 203, the sealing rubber ring at the top of the fixed cylinder 8 is extruded and deformed, so that the movable sleeve plate 301 can be hermetically docked with the fixed cylinder 8.

[0040] As a preferred embodiment of the present invention, the outer walls of the upper and lower ends of the docking plug plate 2012 are both inclined surfaces, the outer shape of the first plug board 204 is T-shaped, the outer wall of one side of the first plug board 204 is in the shape of a square platform, and the docking socket 203 is provided with a movable slot for the first plug board 204, the second conductive block 10, and the docking plug plate 2012 to slide.

[0041] In this embodiment: Through the mutual cooperation of the outer walls that are inclined surfaces, square platforms, and T-shaped at the upper and lower ends with the movable slot, the docking socket 203 can accurately sleeve the outer walls of the first plug board 204 and the docking plug plate 2012, avoiding the difficulty of docking during the process of the docking socket 203 sleeving the outer walls of the first plug board 204 and the docking plug plate 2012.

[0042] As a preferred embodiment of the present invention, the outer wall of the bottom end of the fixed clamping block 2013 is hemispherical, the outer walls of the upper and lower ends of the positioning chuck 2011 are both inclined surfaces, and the positioning chuck 2011 is provided with a docking sleeve groove that matches the outer wall of the fixed clamping block 2013.

[0043] In this embodiment: Through the mutual cooperation of the inclined outer wall and the docking sleeve groove, the positioning chuck 2011 can limit and fix the docking socket 203 by clamping and sleeving the fixed clamping block 2013, avoiding the situation of automatic displacement of the docking socket 203 during use.

[0044] The working principle of the present invention is as follows: When using this device, two biochar electrodes 9 are respectively pushed so that two first insertion plates 204 are inserted into the inside of the docking socket 203. During this process, the first insertion rod 207 is pushed by the extrusion of the first insertion plate 204 to push the first baffle 208 to rise along the inner wall of the docking socket 203. At the same time, the first baffle 208 contracts by moving and extruding the first spring 209, and the first insertion plate 204 is in contact with the lower surface of the first conductive block 205. When the first insertion plate 204 is in contact with the inner wall of one side of the docking socket 203, at this time, the first spring 209 rebounds to push the first baffle 208 so that the first insertion rod 207 is snapped into the inside of the docking socket 203, and the first insertion plate 204 can be clamped and positioned, so as to facilitate the convenient insertion of the docking socket 203 and the two biochar electrodes 9.

[0045] After that, the docking socket 203 is pushed to sleeve the outer walls of the second conductive block 10, the positioning chuck 2011, the docking insertion plate 2012, and the lifting sliding column 2014. When the inner wall of one side of the docking socket 203 is in contact with the outer walls of the second conductive block 10, the positioning chuck 2011, the docking insertion plate 2012, and the lifting sliding column 2014, at this time, stop pushing the docking socket 203 and push the moving sleeve plate 301 to sleeve the outer walls of the two biochar electrodes 9. At the same time, the second insertion plate 302 is inserted into the inside of the docking socket 203 driven by the moving sleeve plate 301. When the moving sleeve plate 301 is in contact with the outer wall of the biochar electrode 9, at this time, push the arc-shaped push plate 304 to closely fit the outer wall of the moving sleeve plate 301. At the same time, the two sealing sleeve plates 303 are slid into the inside of the moving sleeve plate 301 through the limiting sliding plate 306 until the sealing sleeve plates 303 are in contact with the outer wall of the biochar electrode 9. After that, rotate the bolt 305 to penetrate the arc-shaped push plate 304 and be threadedly connected to the moving sleeve plate 301, and the arc-shaped push plate 304 can be fixed, so as to realize the convenient fixation of the moving sleeve plate 301.

[0046] After that, the top cover 6 is moved directly above the outer shell 1 through the lifting tool. At the same time, the two biochar electrodes 9 move synchronously driven by the docking socket 203 and the first insertion plate 204 under the drive of the top cover 6. After that, the top cover 6 is vertically lowered through the lifting tool, and the biochar electrode 9 is lowered into the inside of the fixed cylinder 8 until the top cover 6 is in contact with the upper surface of the outer shell 1. During this process, the connecting push ring 202 is blocked by the outer shell 1 to push the lifting sliding plate 201 to slide along the inner wall of the top cover 6 and the outer wall of the second conductive block 10. At the same time, the positioning chuck 2011 is driven by the lifting sliding column 2014 to slide along the inner wall of the docking socket 203 driven by the lifting sliding plate 201. When the top cover 6 completely sleeves the top outer wall of the outer shell 1, at this time, the positioning chuck 2011 sleeves a plurality of fixed blocks 2013, effectively avoiding the displacement of the docking socket 203 during the sewage treatment process.

[0047] Meanwhile, under the extrusion of the docking socket 203, the second plugboard 302 deforms the sealing rubber ring at the top of the fixed cylinder 8 by pressing the movable sleeve plate 301, enabling the movable sleeve plate 301 to be hermetically docked with the fixed cylinder 8. Then, sewage is conveyed into the interior of the fixed cylinder 8 through the feed pipe 4. At the same time, power is supplied to the electromagnet 2010 through the power supply wire 7, the second conductive block 10, and the docking plug 2012. At this time, under the attraction of the electromagnet 2010, the conductive sliding plate 206 drives the limiting ring to slide along the inner wall of the docking socket 203 and the outer wall of the first conductive block 205 until the conductive sliding plate 206 contacts the outer wall of the electromagnet 2010. At this time, the electromagnet 2010 supplies power to the biochar electrode 9 through the conductive sliding plate 206, the first conductive block 205, and the first plugboard 204.

[0048] It should be specifically noted that the production of the biochar electrode 9: First, 0.5 g of PVDF and 5 mL of N, N-dimethylacetamide solution are stirred by a magnetic stirring rotor for 1 h for full dissolution, then 0.5 g of acetylene black is added and stirred for another 2 h, then 4 g of corn straw biochar is added, and finally 15 mL of N, N-dimethylacetamide is added and stirred for 2 hours to make the liquid biochar. Then, the liquid biochar is evenly coated on the aluminum mesh, then immersed in deionized water for 15 minutes, and then the transformed aluminum mesh is placed in a fume hood and dried for 8 h to make it. The two biochar electrodes 9 are divided into an anode and a cathode through the connected wires. Since the materials of the two biochar electrodes 9 are both aluminum, after 6 h of power-on reaction, both can achieve a removal rate of more than 99% of the impurities in the sewage.

[0049] At this time, through the cooperation of the anode and the cathode, the two biochar electrodes 9 can carry out a chemical reaction on the sewage, so that the impurities in the sewage are separated from the water and precipitate and dock inside the fixed cylinder 8. At the same time, through the long-term contact between the sewage and the biochar electrodes 9, the treatment effect on the sewage is further improved. When the treated water contacts the lower surface of the movable sleeve plate 301 under the blockage of the inner wall of the fixed cylinder 8, at this time, the water flows through the sieve holes on the movable sleeve plate 301 and passes through the movable sleeve plate 301 to flow to the outside of the fixed cylinder 8, and the water located outside the fixed cylinder 8 is conveyed through the discharge pipe 5 for the collection of water.

[0050] When the biochar electrode 9 needs to be replaced, reverse operations are performed on the above operations, which can achieve the rapid replacement of the biochar electrode 9, thereby achieving the purpose of further improving the sewage treatment efficiency.

[0051] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A process for treating acidic mine wastewater using the electrochemical principle, including a housing (1), the top outer wall of the housing (1) is sleeved with a top cover (6), two power supply wires (7) are symmetrically arranged at the top of the top cover (6), the bottom ends of the two power supply wires (7) are fixedly connected with second conductive blocks (10) that penetrate through the top cover (6) to the inside of the housing (1), the second conductive blocks (10) are fixedly connected with the top cover (6), the bottom end of the inner wall of the housing (1) is fixedly connected with a fixed cylinder (8), two biochar electrodes (9) are symmetrically arranged inside the fixed cylinder (8), the two biochar electrodes (9) are respectively located below the two second conductive blocks (10), characterized in that, A docking mechanism (2) is provided on the top cover (6), and the docking mechanism (2) is used for replacing the biochar electrode (9); The docking mechanism (2) includes: a positioning component and a fixing component; the positioning component arranged below the top cover (6) is used for clamping and positioning the biochar electrode (9); the fixing component arranged inside the top cover (6) is used for clamping and fixing the positioning component; a filtering mechanism (3) sleeved on the outer walls of two biochar electrodes (9) is arranged inside the outer shell (1), and the filtering mechanism (3) is used for filtering water flow; The positioning component includes: two docking sockets (2012) respectively fixedly connected to the bottoms of two second conductive blocks (10), both of the two docking sockets (2012) are located below the top cover (6), an electromagnet (2010) is fixedly connected to the bottom end of the docking socket (2012), a first plug board (204) is fixedly connected to the top end of each of the two biochar electrodes (9), a docking socket seat (203) which is horizontally slidably connected to the first plug board (204), the second conductive block (10) and the docking socket (2012) is arranged below the top cover (6), a first conductive block (205) fixedly connected to the docking socket seat (203) is arranged on the upper surface of each of the two first plug boards (204), a conductive sliding disc (206) sleeved on the outer wall of the top end of the first conductive block (205) and slidably connected to the docking socket seat (203) up and down is arranged, the conductive sliding disc (206) is in contact with the lower surface of the electromagnet (2010), a first baffle (208) slidably connected to the docking socket seat (203) up and down is arranged above the first plug board (204), a first insertion rod (207) integrally formed at the bottom end of the first baffle (208) and clamped and connected to the first plug board (204) through the docking socket seat (203) is arranged, a first spring (209) is arranged on the upper surface of the first baffle (208), and two end parts of the first spring (209) are respectively in contact with the inner wall of the docking socket seat (203) and the outer wall of the first baffle (208); The fixing component includes: a lifting slide plate (201) sleeved on the outer walls of two second conductive blocks (10) and slidably connected to the top cover (6) up and down, a connecting push ring (202) integrally formed on the outer wall of the lifting slide plate (201) and slidably connected to the top cover (6) up and down is arranged, the connecting push ring (202) penetrates through the top cover (6) and is in contact with the upper surface of the outer shell (1), a lifting slide column (2014) integrally formed at the bottom end of the lifting slide plate (201) and penetrating through the top cover (6) into the inside of the docking socket seat (203) is arranged, a positioning chuck (2011) integrally formed at the bottom end of the lifting slide column (2014) and slidably connected to the docking socket seat (203) is arranged, and a plurality of fixing blocks (2013) penetrating into the inside of the positioning chuck (2011) are circumferentially formed at the top end of the inner wall of the docking socket seat (203); Sewage is conveyed into the interior of the fixed cylinder (8) through the feed pipe (4). At the same time, power is supplied to the electromagnet (2010) through the power supply wire (7), the second conductive block (10), and the docking socket plate (2012). At this time, under the attraction of the electromagnet in the electromagnet (2010), the conductive sliding plate (206) drives the limit ring to slide along the inner wall of the docking socket (203) and the outer wall of the first conductive block (205) until the conductive sliding plate (206) contacts the outer wall of the electromagnet (2010). At this time, the electromagnet (2010) can supply power to the biochar electrode (9) through the conductive sliding plate (206), the first conductive block (205), and the first plug board (204). At this time, through the cooperation of the anode and the cathode, the two biochar electrodes (9) can carry out a chemical reaction on the sewage. When the treated water contacts the lower surface of the moving socket plate (301) under the blockage of the inner wall of the fixed cylinder (8), the water then passes through the sieve holes on the moving socket plate (301) through the filtering mechanism (3) and flows to the outside of the fixed cylinder (8), and the water located outside the fixed cylinder (8) is conveyed through the discharge pipe (5) for the collection of water.

2. The process for treating acidic mine wastewater using the electrochemical principle according to claim 1, characterized in that, The filtering mechanism (3) includes: a moving socket plate (301) arranged inside the housing (1). The moving socket plate (301) is horizontally slidably connected to the two biochar electrodes (9) and contacts the upper surface of the fixed cylinder (8). A plurality of sieve holes penetrating to the outside of the bottom end are circumferentially formed at the top end of the moving socket plate (301). A second plug board (302) integrally formed at the top end of the moving socket plate (301) is horizontally slidably connected to the docking socket (203). Above the second plug board (302), there is a second baffle (308) slidably connected to the docking socket (203) up and down. A second plug rod (307) integrally formed at the bottom end of the second baffle (308) penetrates the docking socket (203) and is snap-connected to the second plug board (302). A second spring (309) is arranged on the upper surface of the second baffle (308). The two ends of the second spring (309) are respectively in contact with the outer wall of the second baffle (308) and the inner wall of the docking socket (203). An arc-shaped push plate (304) is arranged on the outer wall of the moving socket plate (301). Sealing sleeve plates (303) slidably connected to the moving socket plate (301) are integrally formed at both ends of the arc-shaped push plate (304). The sealing sleeve plates (303) are in contact with the outer walls of the biochar electrodes (9). Two limiting sliding plates (306) slidably connected to the moving socket plate (301) are symmetrically formed on the outer walls of the sealing sleeve plates (303). A bolt (305) penetrating the arc-shaped push plate (304) and threadedly connected to the moving socket plate (301) is arranged on the side of the arc-shaped push plate (304) away from the moving socket plate (301).

3. A process for treating acidic mine wastewater using electrochemical principles according to claim 1, characterized in that, The outer wall of the outer shell (1) is symmetrically provided with a feed pipe (4) and a discharge pipe (5). The feed pipe (4) penetrates through the outer shell (1) to the inside of the fixed cylinder (8), and the discharge pipe (5) penetrates to the inside of the outer shell (1). The feed pipe (4) and the discharge pipe (5) are fixedly connected to the outer shell (1) and the fixed cylinder (8).

4. A process for treating acidic mine wastewater using electrochemical principles according to claim 1, characterized in that, The outer walls of the upper and lower ends of the docking plug disc (2012) are both bevel-shaped. The outer shape of the first plug board (204) is T-shaped. The outer wall of one side of the first plug board (204) is square-platform-shaped. The docking socket (203) is provided with a moving slot for the first plug board (204), the second conductive block (10), and the docking plug disc (2012) to slide.

5. A process for treating acidic mine wastewater using electrochemical principles according to claim 1, characterized in that, A limiting ring is integrally formed on the outer wall of the conductive sliding disc (206). The docking socket (203) is provided with a lifting sliding slot for the conductive sliding disc (206) and the limiting ring to slide up and down.

6. The process for treating acidic mine wastewater using the electrochemical principle according to claim 1, characterized in that, The outer wall of the bottom end of the fixed clamping block (2013) is hemispherical. The outer walls of the upper and lower ends of the positioning chuck (2011) are both bevel-shaped. The docking socket groove that matches the outer wall of the fixed clamping block (2013) is provided on the positioning chuck (2011).

7. A process for treating acidic mine wastewater using electrochemical principles according to claim 2, characterized in that, A sealing rubber ring that contacts the lower surface of the moving sleeve disc (301) is fixedly connected to the top end of the fixed cylinder (8). The outer shape of the second plug board (302) is T-shaped. The outer wall of one side of the second plug board (302) is square-platform-shaped. The docking socket (203) is provided with a sliding slot for the second plug board (302) to slide.

8. A process for treating acidic mine wastewater using the electrochemical principle according to claim 2, characterized in that, The outer walls of the bottom ends of the first plug rod (207) and the second plug rod (307) are both hemispherical. The positioning card slots that match the outer walls of the first plug rod (207) and the second plug rod (307) are provided on the first plug board (204) and the second plug board (302). The moving slot for the upper and lower sliding of the first baffle (208), the first plug rod (207), the second baffle (308), and the second plug rod (307) is provided on the docking socket (203).

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