Electrochemical coagulation device and electrochemical water treatment system

Abstract

The present invention relates to an electrochemical coagulation device and an electrochemical water treatment system. The electrochemical coagulation device comprises: a coagulation tank; a pole plate assembly, which is arranged in the coagulation tank and comprises one or two of a magnetic pole plate assembly composed of a plurality of magnetic pole plates arranged in parallel and a non-magnetic pole plate assembly composed of a plurality of non-magnetic pole plates arranged in parallel; a pole plate replacement unit, which comprises a driving assembly, a fixing part and a sliding part; the magnetic pole plate is installed on the sliding part through a magnetic slot, and the non-magnetic pole plate is installed on the sliding part through a mechanical slot. The present invention can quickly and safely replace the pole plate after the pole plate is consumed, and reduce the consumption of the pole plate material by adding metal balls to the pole plate. The water body can be efficiently oxidized and disinfected by the electrochemical oxidation disinfection device; the coagulated water can be subjected to enhanced deep treatment by the electrochemical filter. The present invention can be used for electrochemical water coagulation, oxidation disinfection and filtration treatment, remove specific components in water such as hydrogen sulfide or fluoride ions, and is suitable for a variety of water quality treatments.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and in particular, relates to an electrochemical coagulation device and an electrochemical water treatment system for treating drinking water, sewage and polluted water. Background Art

[0002] Electrochemical water treatment is a water treatment technology that uses soluble metals as electrodes to purify water under the action of power based on electrochemical principles. The cathode and anode electrochemical reaction processes include coagulation, electroflocculation, electrooxidation, electroreduction and electroflotation, which have good conversion and removal effects on suspended matter, colloids and soluble substances in water. Compared with coagulation and sedimentation, electrochemical method has a wider range of applications. It has a strong coagulation effect on organic and inorganic matter in water within a larger temperature range, and can be widely used in the treatment of sewage, polluted water and drinking water.

[0003] At present, the electrochemical water treatment process has the problems of large consumption of electrode materials, high cost of use, and low degree of automatic control, and is not widely used in practice. Taking the treatment of 100,000 tons of water, for example, 5g of anode iron is consumed per ton of water, and 500kg of electrodes are consumed every day, resulting in frequent replacement of electrodes, which is time-consuming and labor-intensive, and poor safety when replacing the plates. Summary of the invention

[0004] In view of the above-mentioned problems existing in the existing electrochemical water treatment process, such as large consumption of electrode materials and frequent electrode replacement, the present invention provides an electrochemical coagulation device and an electrochemical water treatment system with safe electrode plate replacement, low use cost and high degree of automatic control. The electrochemical water coagulation, oxidation disinfection and filtration treatment can be achieved, and can also be used to remove specific components in water, such as hydrogen sulfide or fluoride ions.

[0005] In order to achieve the above object, the present invention provides an electrochemical coagulation device, comprising:

[0006] Coagulation tank;

[0007] The pole plate assembly is arranged in the coagulation tank, and includes one or two pole plate assemblies: a magnetic pole plate assembly composed of a plurality of magnetic pole plates arranged in parallel, and a non-magnetic pole plate assembly composed of a plurality of non-magnetic pole plates arranged in parallel;

[0008] The plate replacement unit comprises a driving assembly arranged at both ends of the coagulation tank, a first fixing member connected to the driving assembly, and a first sliding member slidably connected to the first fixing member;

[0009] The magnetic pole plate is installed on the first sliding member through a magnetic slot, and the non-magnetic pole plate is installed on the first sliding member through a first mechanical slot.

[0010] Furthermore, it also includes a metal particle adding device, which is provided with multiple groups of feed pipes, each group of feed pipes includes two symmetrically arranged feed pipes, the two feed pipes are located on both sides of the magnetic pole plate or the non-magnetic pole plate, and each feed pipe is provided with at least two particle outlets.

[0011] Preferably, the driving assembly includes a hydraulic mechanism, a first motor installed on the hydraulic mechanism and a bracket installed on the hydraulic mechanism, the motor shaft of the first motor is connected to a first gear, a second gear is provided on the bracket, the first gear is meshed with the second gear, and the first fixing member is connected to the second gear.

[0012] Preferably, the first sliding member includes a sliding portion and claw portions arranged on both sides of the bottom of the sliding portion; the sliding portion is provided with a T-shaped slider and a second motor, the T-shaped slider is provided with a moving gear connected to the second motor shaft, the claw portion is provided with a boss, and the bosses respectively correspond to the first groove provided on the side of the magnetic slot and the second groove provided on the side of the first mechanical slot; the first fixing member is provided with a T-shaped slideway matching the T-shaped slider, and the T-shaped slideway is provided with a first rack meshing with the moving gear; the bottom of the first mechanical slot is provided with a third motor and a second rack, the third motor shaft is connected to a third gear, and the third gear meshes with the second rack.

[0013] Preferably, an insulating basket is provided around the non-magnetic pole plate, the wide side of the insulating basket is fixed in the coagulation tank, and the long side of the insulating basket is connected to a hydraulic cylinder installed in the coagulation tank.

[0014] Preferably, it further comprises a first air blowing mechanism, which comprises a first air inlet arranged on the side wall of the coagulation tank and a plurality of first air outlets arranged on the side wall of the coagulation tank, wherein the first air outlets correspond to the gaps between the plates.

[0015] Furthermore, it also includes a control device, which includes a controller and a signal transmitter, a signal receiver and a first water quality detector respectively connected to the controller, the signal transmitter, the signal receiver and the first water quality detector are all arranged in the coagulation tank, the signal transmitter and the signal receiver are arranged opposite to each other, and are respectively located on the side walls of the coagulation tank at both ends of each row of plate assemblies; the magnetic slot, the first motor, the second motor, the third motor, the hydraulic mechanism, and the hydraulic cylinder are all electrically connected to the controller.

[0016] In order to achieve the above object, the present invention provides an electrochemical water treatment system, comprising the electrochemical coagulation device described above.

[0017] Furthermore, it also includes an electrochemical oxidation disinfection device, which includes:

[0018] Oxidation disinfection pool;

[0019] A fixing frame is installed on the upper part of the oxidation disinfection tank, and its end is connected to the oxidation disinfection tank;

[0020] A second sliding member is slidably connected to the fixing frame;

[0021] At least two groups of inert plates are arranged in the oxidation disinfection tank and connected to the second sliding member through a second mechanical slot;

[0022] The second water quality detector is arranged in the oxidation disinfection pool.

[0023] Furthermore, it also includes an electrochemical filter, which includes a filter body, a water inlet pipe connected to the top of the filter body, a water outlet pipe connected to the bottom of the filter body, and graphite rods, water distribution plates, and water collecting plates respectively arranged inside the filter, the water distribution plate is located at the top of the filter body, the water collecting plate is located at the bottom of the filter body, and the filter medium in the filter body is made of one or more mixed chips of iron chips, zinc chips, and copper chips, or iron-carbon coke made from iron chips, fat coal and coking coal.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are:

[0025] (1) The present invention is provided with a plate replacement unit, which can quickly and safely replace the plate when the plate is exhausted. Since the plate used in electrochemical coagulation treatment is usually made of iron material with the lowest cost, in order to reduce the cost of use, the magnetic plate is preferably made of iron. In order to facilitate the replacement of the magnetic plate, a magnetic card slot is used to make the replacement of the magnetic plate safer and more convenient.

[0026] (2) The present invention is provided with a particle adding device, which can add metal chips or metal balls pressed from metal chips into the pole plate. The metal balls are made of metal chips pressed into a spherical shape by a ball press. When iron plates or magnetic materials are used as electrodes, the metal balls pressed from iron chips by the magnetic adsorption of the magnetic pole plate can be directly used as pole plate consumable materials, thereby reducing the consumption of the pole plate and significantly reducing the cost of the magnetic pole plate. For example, waste iron chips balls are only 1 / 4 of the cost of the magnetic pole plate. At the same time, non-magnetic materials such as aluminum balls can be added between the pole plates. The aluminum balls are squeezed on the surface of the non-magnetic pole plate using an insulating basket to fully contact and conduct electricity, thereby reducing the consumption of the non-magnetic pole plate and reducing the cost of the non-magnetic pole plate by 1 / 3. According to different water qualities, alloy balls pressed from metal chips in different proportions can be added at the same time to remove specific components in the water. The addition of zinc and copper can effectively remove hydrogen sulfide in the water, and the addition of aluminum can remove fluoride ions or phosphates in the water.

[0027] (3) The present invention uses different plates, and automatically uses different plates according to the requirements of the water quality to be treated. In addition to the commonly used iron plates and aluminum plates, zinc plates or copper plates can also be used. Different components and ions can be removed, and conventional coagulation effects can be achieved. Specific components such as divalent sulfur, fluoride ions, phosphate ions, etc. can also be removed.

[0028] (4) The distance between adjacent plates of the present invention is adjustable, and the voltage is adjustable. During the coagulation process, the positive and negative electrodes can be switched at regular intervals to achieve the purpose of consuming the plates simultaneously, and the plates can be replaced at regular intervals.

[0029] (5) The electrochemical oxidation disinfection device of the present invention can utilize the Cl - Self-oxidation disinfection.

[0030] (6) The present invention also uses an electrochemical filter. The electrochemical filter can use one or more mixed chips of iron chips, zinc chips, and copper chips as the filter medium, or metal balls pressed from metal chips as the filter medium. The filter medium can also be iron-carbon coke made from iron chips, fat coal, and coking coal. Applying a certain voltage to the metal filter medium can perform secondary deep treatment on the incoming water. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1-2 This is a schematic diagram of the structure of the electrochemical coagulation device described in Example 1 of the present invention;

[0032] Figure 3 This is a schematic structural diagram of the plate replacement unit described in Example 1 of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the driving assembly according to Embodiment 1 of the present invention;

[0034] Figure 5 This is a schematic structural diagram of the first fixing member in Example 1 of the present invention;

[0035] Figure 6-7 This is a schematic structural diagram of the first sliding member in Example 1 of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the magnetic card slot described in Example 1 of the present invention;

[0037] Fig. 9 This is a schematic diagram of the structure of the first mechanical slot in Example 1 of the present invention;

[0038] Fig.10 This is a schematic diagram of the partial structure of the first mechanical slot in Example 1 of the present invention;

[0039] Fig.11 This is a partial structural diagram of the particle adding device described in Example 1 of the present invention;

[0040] Fig.12 This is a schematic structural diagram of the first blowing mechanism in Example 1 of the present invention;

[0041] Fig.13 This is the control principle diagram described in Example 1 of the present invention;

[0042] Fig.14 This is a structural block diagram of the electrochemical water treatment system described in Example 2 of the present invention;

[0043] Figure 15-16 This is a schematic diagram of the structure of the electrochemical oxidation disinfection device according to an embodiment of the present invention;

[0044] Fig.17 This is a schematic structural diagram of the second air blowing mechanism according to an embodiment of the present invention;

[0045] Fig.18 This is a schematic diagram of the structure of the second mechanical slot according to an embodiment of the present invention;

[0046] Fig.19 This is a structural block diagram of the electrochemical water treatment system described in Example 3 of the present invention;

[0047] Fig. 20 It is a schematic diagram of the structure of the electrochemical filter according to an embodiment of the present invention;

[0048] Fig.21 is a schematic diagram of the cross-sectional structure of the electrochemical filter according to an embodiment of the present invention;

[0049] Fig. 22 This is a structural block diagram of the electrochemical water treatment system described in Example 4 of the present invention.

[0050] In the figure, A, electrochemical coagulation device, A1, coagulation tank, A1-1, first water inlet, A1-2, first water outlet, A2, magnetic plate, A3, non-magnetic plate, A4, particle adding device, A4-1, first particle outlet, A4-2, second particle outlet, A4-3, third particle outlet, A5, first fixing member, A6, first sliding member, A7, magnetic card slot, A7-1, card slot housing, A7-2, electromagnet, A7-3, top cover, A 8. first mechanical slot, A8-1. third motor, A8-2. second rack, A8-3. third gear, A9. hydraulic mechanism, A10. first motor, A11. bracket, A12. first gear, A13. second gear, A14. sliding part, A15. claw part, A16. T-shaped slider, A17. second motor, A18. moving gear, A19. boss, A20. first groove, A21. T-shaped slide, A22. insulating basket, A23 , hydraulic cylinder, A24, first air inlet, A25, first air outlet, A26, controller, A27, signal transmitter, A28, signal receiver, A29, first water quality detector, A30, first junction box, B, electrochemical oxidation disinfection device, B1, oxidation disinfection tank, B1-1, second water inlet, B1-2, second water outlet, B2, fixing frame, B3, second sliding member, B4, inert plate, B5, second mechanical slot, B6, second water quality Detector, B7, second air inlet, B8, second air outlet, B9, second junction box, B10, bolt, B11, rubber pad, C, electrochemical filter, C1, filter body, C2, water inlet pipe, C3, water outlet pipe, C4, graphite rod, C4-1, graphite rod wire, C5, water distribution plate, C6, water collecting plate, C6-1, water collecting plate wire, C7, backwash air inlet, C8, backwash water inlet, C9, backwash water outlet, C10, feeding port. DETAILED DESCRIPTION

[0051] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0052] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the positional relationships shown in the drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] Example 1: See Figures 1 to 3 , this embodiment provides an electrochemical coagulation device, comprising:

[0054] The coagulation tank A1 is provided with a first water inlet A1-1 and a first water outlet A1-2;

[0055] Two rows of plate assemblies are arranged in the coagulation tank A1;

[0056] The pole plate assembly includes a magnetic pole plate assembly composed of a plurality of magnetic pole plates A2 arranged in parallel and a non-magnetic pole plate assembly composed of a plurality of non-magnetic pole plates A3 arranged in parallel, and the non-magnetic pole plate assembly is arranged in parallel with the magnetic pole plate assembly;

[0057] Two sets of plate replacement units, each set of plate replacement units includes a driving assembly arranged at both ends of the coagulation tank, a first fixing member A5 connected to the driving assembly, and a first sliding member A6 slidably connected to the first fixing member A5;

[0058] The magnetic pole plate A2 is mounted on the first sliding member A6 through a magnetic slot A7, and the non-magnetic pole plate A3 is mounted on the first sliding member A6 through a first mechanical slot A8.

[0059] In a specific embodiment, in order to reduce the consumption of the pole plate and reduce the cost of using the pole plate, the electrochemical coagulation device of this embodiment also includes a metal particle adding device A4 arranged between two adjacent rows of pole plate assemblies, and the metal particle adding device A4 is provided with multiple groups of feeding pipes, each group of feeding pipes includes two symmetrically arranged feeding pipes, and each feeding pipe is provided with three particle outlets, namely, the first particle outlet A4-1, the second particle outlet A4-2, and the third particle outlet A4-3. Specifically, there is a feeding pipe distributed on both sides of each magnetic pole plate and each non-magnetic pole plate. It should be noted that the particle outlet is not limited to 3, and can also be 2, 4, 5, etc., which is set according to actual needs. Metal chips or metal balls pressed by metal chips can be added to the pole plate through the particle adding device. The metal ball can be made of one or more metal chips, such as iron or aluminum balls pressed from iron or aluminum chips; iron-zinc balls pressed from iron and zinc chips; iron-aluminum balls pressed from iron and aluminum chips; iron-copper balls pressed from iron and copper chips; aluminum-zinc balls pressed from aluminum and zinc chips; aluminum-copper balls pressed from aluminum and copper chips; and zinc-copper balls pressed from zinc and copper chips. In order to increase the magnetism of the metal ball, a small amount of magnet particles can be added during the pressing process of the metal ball to increase the magnetism of the metal ball.

[0060] Specifically, see Figure 1 , Figure 2 , and see Figure 4The driving assembly includes a hydraulic mechanism A9, a first motor A10 installed on the hydraulic mechanism A9, and a bracket A11 installed on the hydraulic mechanism A9. The motor shaft of the first motor A10 is connected to a first gear A12. The bracket A11 is provided with a second gear A13. The first gear A12 is meshed with the second gear A13. The first fixing member A5 is connected to the second gear A13.

[0061] Specifically, see Figure 6 , Figure 7 The first sliding member A6 includes a sliding portion A14 and claws A15 arranged on both sides of the bottom of the sliding portion A14; the sliding portion A14 is provided with a T-shaped slider A16 and a second motor A17, the T-shaped slider A16 is provided with a moving gear A18 connected to the shaft of the second motor A17, and the claw A15 is provided with a boss A19, which respectively corresponds to the first groove A20 arranged on the side of the magnetic card slot A7 and the second groove arranged on the side of the first mechanical card slot A8. Figure 5 The first fixing member A5 is provided with a T-shaped slideway A21 matched with the T-shaped slider A16, and the T-shaped slideway A21 is provided with a first rack meshing with the moving gear A18.

[0062] Specifically, see Figure 8 The magnetic card slot A7 includes a card slot housing A7-1, an electromagnet A7-2 disposed inside the card slot housing A7-1, and a top cover A7-3 disposed on the upper part of the electromagnet A7-2, and the first groove A20 is disposed on both sides of the card slot housing A7-1. The magnetic card slot A7 is mounted on the claw A15 of the first sliding member A6 through the first groove A20 and the boss A19.

[0063] Specifically, see Fig. 9 , Fig.10 The bottom of the first mechanical slot A8 is provided with a third motor A8-1 and a second rack A8-2, the third motor A8-1 shaft is connected to a third gear A8-3, and the third gear A8-3 is meshed with the second rack A8-2. The non-magnetic pole plate is connected to the first mechanical slot through the second rack.

[0064] Specifically, see Figure 3 The non-magnetic pole plate A3 is surrounded by an insulating basket A22, the wide side of which is fixed in the coagulation tank A1, and the long side of which is connected to a hydraulic cylinder A23 installed in the coagulation tank A1. The wide side of the insulating basket is fixed, and the long side is movable. The long side of the insulating basket is pushed by the hydraulic cylinder to move, so that particles (such as aluminum chips or aluminum powder) or spherical metal chips that are the same or similar to the pole plate material added by the particle adding device are squeezed on the surface of the non-magnetic pole plate to participate in the reaction, thereby accelerating the purification speed and reducing the consumption of the pole plate.

[0065] In a specific embodiment, in order to accelerate coagulation, the electrochemical coagulation device further includes a first blowing mechanism. Figure 1 , Figure 2 , and see Fig.12 The first air blowing mechanism includes a first air inlet A24 provided on the side wall of the coagulation tank A1 and a plurality of first air outlets A25 provided on the side wall of the coagulation tank A1, and the first air outlets A25 correspond to the gaps between the plates. Specifically, the first air inlet and the first air outlet are provided on the two side walls of the long side of the coagulation tank. The first air blowing mechanism can stir the water in the coagulation tank and accelerate coagulation.

[0066] In one embodiment, see Fig.13 In this embodiment, the electrochemical coagulation device further includes a control device, which includes a controller A26 and a signal transmitter A27, a signal receiver A28 and a first water quality detector A29 respectively connected to the controller. The signal transmitter A27, the signal receiver A28 and the first water quality detector A29 are all arranged on the inner wall of the coagulation tank A1. The signal transmitter A27 and the signal receiver A28 are arranged opposite to each other and are respectively located on the side walls of the coagulation tank at both ends of each row of plate assemblies. The magnetic card slot A7, the first motor A10, the second motor A17, the third motor A8-1, the hydraulic mechanism A9 and the hydraulic cylinder A23 are all electrically connected to the controller A26 through the first junction box A30 arranged outside the coagulation tank A1. The first water quality detector detects the components in the water and transmits the information to the controller. The controller selects to use plates of different materials according to the substances contained in the water so as to remove different pollutants in the water in a targeted manner, and can determine the purification speed by controlling the number of plates and the size of the power-on voltage. The signal transmitter and the signal receiver detect whether the plates are completely consumed.

[0067] It should be noted that the plate assembly described in this embodiment is not limited to two rows, and the plate replacement units are not limited to two groups. They can be set according to actual conditions, and the number of rows of the plate assembly is the same as the number of groups of plate replacement units. When the plate assembly has multiple rows, a particle adding device is provided between two adjacent rows of plate assemblies.

[0068] Specifically, see Figure 8 The magnetic pole plate is made into a grate shape, which not only increases the relative contact area, but also can accommodate more metal particles or metal particles.

[0069] When the electrochemical coagulation device of this embodiment is working, the plate is controlled to move along the T-shaped slideway, the distance between the plates is reduced to accelerate purification, and the number of plates can also be increased. At the same time, a particle adding device is provided to add metal balls pressed by metal chips to the plates. The ferromagnetic metal can be attracted by the magnetically conductive plates and adsorbed on the surface of the plates to participate in the electrolysis reaction. The non-magnetic particles are squeezed on the surface of the non-magnetic plates by the movable long sides of the insulating basket to participate in the reaction, thereby accelerating the purification speed. The components in the water are also detected by the first water quality detector, and the information is transmitted back to the controller. The controller selects to use plates of different materials according to the substances contained in the water, so as to remove different pollutants in the water in a targeted manner. When the first water quality detector detects that the water body is qualified, the water is discharged through the outlet for the next step of filtration or disinfection.

[0070] The principle of automatic replacement of the plate in the electrochemical coagulation device of this embodiment is as follows: when the plate is consumed, the control current will suddenly decrease, and the controller will automatically alarm. When the signal receiver at one end of one row of plate assemblies receives the signal sent by the signal transmitter at the other end, it means that the plate is consumed and needs to be replaced. At this time, the controller controls the hydraulic mechanism A9 at both ends of the row of plate assemblies to move synchronously, and lifts the first motor A10, the bracket A11, the first fixing member A5, the first sliding member A6, the magnetic slot A7, the first mechanical slot A8 and the waste plate to a certain height and stabilizes. Then the controller A26 controls the first motor A10 to rotate, drives the first fixing member A5 to rotate, flips the waste plate, and the bottom of the waste plate faces the long side wall of the coagulation tank, stops supplying power to the magnetic slot A7, and controls the third motor A8-1 in the first mechanical slot A8 to rotate to retract the second rack A8-2, and the waste plate falls off and is recovered. Then a robot puts a new plate into the slot, restores the power supply to the magnetic slot A7, and controls the second rack A8-2 to return to its original position. The controller A26 controls the first motor A10 to rotate in the opposite direction, and when it reaches the original position, controls the hydraulic structure A9 to descend, so that the plate returns to the working position in the coagulation tank. Thus, the plate can be automatically replaced.

[0071] It should be noted that the pole plate assembly may be a magnetic pole plate assembly consisting only of a plurality of magnetic pole plates A2 arranged in parallel, or may be a non-magnetic pole plate assembly consisting only of a plurality of non-magnetic pole plates A3 arranged in parallel, and the specific selection is made according to actual water treatment requirements.

[0072] Example 2: See Fig.14This embodiment provides an electrochemical water treatment system, including the electrochemical coagulation device A and the electrochemical oxidation disinfection device B described in Example 1, and the water outlet of the electrochemical coagulation device A is connected to the water inlet of the electrochemical oxidation disinfection device B through a pipeline. The water coagulated by the electrochemical coagulation device enters the electrochemical oxidation disinfection device for oxidation disinfection, and then the treated water is discharged for sedimentation and filtration. The above-mentioned electrochemical water treatment system can also interchange the positions of the electrochemical coagulation device A and the electrochemical oxidation disinfection device B, connect the water outlet of the electrochemical oxidation disinfection device B to the water inlet of the electrochemical coagulation device A through a pipeline, first oxidize and disinfect the water, then perform coagulation treatment, and then discharge the treated water for sedimentation and filtration. The structural composition and working principle of the electrochemical coagulation device A are the same as those in Example 1, and will not be repeated here. The structural composition and working principle of the electrochemical oxidation disinfection device B will be described in detail below.

[0073] Specifically, see Fig.15 , Fig.16 , the electrochemical oxidation disinfection device B comprises:

[0074] The oxidation disinfection pool B1 is provided with a second water inlet B1-1 and a second water outlet B1-2;

[0075] The fixing frame B2 is installed on the upper part of the oxidation disinfection tank B1, and its end is connected to the oxidation disinfection tank B1;

[0076] A second sliding member B3 is slidably connected to the fixing frame B2;

[0077] At least two groups of inert plates B4 are arranged in the oxidation disinfection tank B1 and connected to the second sliding member B3 through the second mechanical slot B5;

[0078] The second water quality detector B6 is arranged at the second water outlet B1-2 in the oxidation disinfection tank B1.

[0079] Specifically, in the specific implementation of this embodiment, in order to facilitate the flow of water and accelerate disinfection, the electrochemical oxidation disinfection device of this embodiment further includes a second blowing mechanism, and further see Fig.15 , Fig.16 , and see Fig.17 The second blowing mechanism includes a second air inlet B7 provided on the side wall of the oxidation disinfection tank B1 and a plurality of second air outlets B8 provided on the side wall of the oxidation disinfection tank B1, and the second air outlets B8 correspond to the gaps between the inert plates B4. The second blowing mechanism enables the water in the oxidation disinfection tank to flow quickly, accelerates disinfection, and improves disinfection efficiency.

[0080] Specifically, see Fig.18The inert plate B4 is mounted on the second mechanical slot B5 by bolts B10. In addition, since the inert plate is fragile, a rubber pad B11 is provided at the connection between the inert plate B4 and the second mechanical slot B5 to protect the inert plate.

[0081] In this embodiment, the structure and working principle of the fixed frame B2 are the same as those of the first fixed component A5 in Example 1, and the structure and working principle of the second sliding component B3 are the same as those of the first sliding component A6 in Example 1. For details, please refer to the relevant description of the first fixed component A5 and the first sliding component A6 in Example 1, which will not be repeated here.

[0082] Specifically, the inert electrode plate is made into a grate shape to increase the contact area and accelerate disinfection.

[0083] When the water enters the electrochemical oxidation disinfection device, the second water quality detector B6 detects the amount of active chlorine. According to the detected amount of active chlorine, the spacing between the inert plates and the voltage parameters are adjusted. The number of plates can also be adjusted. Active oxygen and alkaline free radicals are generated at the anode, which have a certain oxidation effect on organic matter in the water. At the same time, the chloride ions in the water can be activated into Cl2 and ClO - After the disinfection is completed, the water is discharged from the second water outlet to ensure that the discharged water is qualified.

[0084] Example 3: See Fig.19 This embodiment provides an electrochemical water treatment system, including the electrochemical coagulation device A and the electrochemical filter C described in Example 1, wherein the water outlet of the electrochemical coagulation device A is connected to the water inlet pipe of the electrochemical filter C through a pipeline. The structure and working principle of the electrochemical coagulation device A are the same as those of Example 1, and will not be described in detail here. Only the structure and working principle of the electrochemical filter C will be described in detail below.

[0085] Specifically, see Fig. 20, the electrochemical filter includes a filter body C1, a water inlet pipe C2 connected to the top of the filter body, a water outlet pipe C3 connected to the bottom of the filter body, and a graphite rod C4, a water distribution plate C5, and a water collecting plate C6 respectively arranged inside the filter. The water distribution plate C5 is located at the top of the filter body C1, and the water collecting plate C6 is located at the bottom of the filter body C1. Among them, the graphite rod C5 is connected to the external power supply through the graphite rod wire C4-1. When a certain voltage of 5-36v is applied, taking iron filings as an example, electrolysis will produce divalent iron ions. During the filtration process, divalent iron ions and dissolved oxygen in water generate trivalent iron ions, which can be used for the purpose of removing dissolved oxygen in water. At the same time, the generation of trivalent iron ions has a coagulation effect, and COD in water can be reduced again after filtration. The iron ions that are continuously dissolved during the electrolysis process can maintain the surface activity of iron filings or iron balls, and prevent the generation of too much ferric oxide from accumulating on the surface. The active hydrogen produced by the cathode is also conducive to maintaining a reducing atmosphere in the filter. Specifically, the provision of a water distribution plate C5 is conducive to uniform flow of water and better filtering effect.

[0086] Specifically, the water collecting plate C6 is provided with an insulating filter layer, which can be made of quartz sand or anthracite. A layer of metal chips or metal balls, or a mixture of these chips, can be added to the insulating filter layer. Generally, iron chips or iron balls pressed from iron chips are used for filtration. Filtration with metal chips or metal balls can be used to remove dissolved oxygen in water, and can also be used for enhanced coagulation of water or removal of specific ion components therein. In addition to iron chips, aluminum, zinc or copper chips can also be used to remove specific ions. Iron and aluminum chips can remove phosphate in water, and aluminum chips can remove fluoride ions in water; zinc or copper chips can remove divalent sulfur in water.

[0087] Specifically, the filter medium in the filter body is a mixture of one or more of iron scraps, aluminum scraps, zinc scraps, and copper scraps. Or iron-carbon coke made from iron scraps, fat coal, and coking coal is used, wherein the iron-carbon coke is made by mixing 5-20 parts of iron scraps with a particle size less than 3 mm, 20-30 parts of fat coal with a particle size less than 1 mm, and 30-50 parts of coking coal with a particle size less than 1 mm, and then compacting them, and then high-temperature dry distilling at 850-950°C for 2-4 hours in an airtight state. The iron-carbon coke made by the above method is filtered, and the iron-carbon coke has good adsorption properties.

[0088] Specifically, it also includes a backwashing device, which includes a backwashing air inlet C7 provided on the water outlet pipe C3, a backwashing water inlet C8 provided on the water outlet pipe C3, and a backwashing water outlet C9 provided on the water inlet pipe C2.

[0089] Specifically, the filter body C1 is coated with epoxy resin for corrosion protection and electrochemical insulation.

[0090] Specifically, the filter body C1 is also provided with a feeding port C10, which is convenient for replacing materials.

[0091] Working principle of electrochemical filter: water enters the filter body C1 from the water inlet pipe C2 and flows out from the water outlet pipe C3; when secondary coagulation or electrochemical deoxidation is required, the graphite rod wire C4-1 is energized to the graphite rod C4, and the water collecting plate C6 is used as the cathode to make the metal chips produce electrochemical reaction. The filter medium can be quartz sand, anthracite, etc. The electrochemical reaction medium can first use iron, aluminum, zinc or copper chips to remove different components in the water. Iron, aluminum, zinc or copper chips can be placed on the filter medium. When the electrochemical filter fails, backwashing is performed, and the backwashing air inlet C7 is opened for the active filter layer, and the backwashing air inlet C7 is closed. Water is introduced from the backwashing water inlet C8 and discharged from the backwashing water outlet C9. After cleaning, the electrochemical filter can be used for filtration again.

[0092] Example 4: See Fig.21 This embodiment provides an electrochemical water treatment system, including the electrochemical coagulation device A, the electrochemical oxidation disinfection device B and the electrochemical filter C described in Example 1, wherein the water outlet of the electrochemical coagulation device A is connected to the water inlet of the electrochemical oxidation disinfection device B through a pipeline, and the water outlet of the electrochemical oxidation disinfection device B is connected to the water inlet of the electrochemical filter C through a pipeline. The structure and working principle of the electrochemical coagulation device A are the same as those of Example 1, and will not be described in detail here. Only the structure and working principle of the electrochemical oxidation disinfection device B and the electrochemical filter C will be described in detail below.

[0093] Specifically, see Fig.15 , Fig.16 , the electrochemical oxidation disinfection device B comprises:

[0094] The oxidation disinfection pool B1 is provided with a second water inlet B1-1 and a second water outlet B1-2;

[0095] The fixing frame B2 is installed on the upper part of the oxidation disinfection tank B1, and its end is connected to the oxidation disinfection tank B1;

[0096] A second sliding member B3 is slidably connected to the fixing frame B2;

[0097] At least two groups of inert plates B4 are arranged in the oxidation disinfection tank B1 and connected to the second sliding member B3 through the second mechanical slot B5;

[0098] The second water quality detector B6 is arranged at the second water outlet B1-2 in the oxidation disinfection tank B1.

[0099] Specifically, in the specific implementation of this embodiment, in order to facilitate the flow of water and accelerate disinfection, the electrochemical oxidation disinfection device of this embodiment further includes a second blowing mechanism, and further see Fig.15 , Fig.16 , and see Fig.17The second blowing mechanism includes a second air inlet B7 provided on the side wall of the oxidation disinfection tank B1 and a plurality of second air outlets B8 provided on the side wall of the oxidation disinfection tank B1, and the second air outlets B8 correspond to the gaps between the inert plates B4. The second blowing mechanism enables the water in the oxidation disinfection tank to flow quickly, accelerates disinfection, and improves disinfection efficiency.

[0100] Specifically, see Fig.18 The inert plate B4 is mounted on the second mechanical slot B5 by bolts B10. In addition, since the inert plate is fragile, a rubber pad B11 is provided at the connection between the inert plate B4 and the second mechanical slot B5 to protect the inert plate.

[0101] In this embodiment, the structure and working principle of the fixed frame B2 are the same as those of the first fixed component A5 in Example 1, and the structure and working principle of the second sliding component B3 are the same as those of the first sliding component A6 in Example 1. For details, please refer to the relevant description of the first fixed component A5 and the first sliding component A6 in Example 1, which will not be repeated here.

[0102] Specifically, the inert electrode plate is made into a grate shape to increase the contact area and accelerate disinfection.

[0103] When the water enters the electrochemical oxidation disinfection device, the second water quality detector B6 detects the amount of active chlorine. According to the detected amount of active chlorine, the spacing between the inert plates and the voltage parameters are adjusted. The number of plates can also be adjusted. Active oxygen and alkaline free radicals are generated at the anode, which have a certain oxidation effect on organic matter in the water. At the same time, the chloride ions in the water can be activated into Cl2 and ClO - After the disinfection is completed, the water is discharged from the second water outlet to ensure that the discharged water is qualified.

[0104] Specifically, see Fig. 20, the electrochemical filter includes a filter body C1, a water inlet pipe C2 connected to the top of the filter body, a water outlet pipe C3 connected to the bottom of the filter body, and a graphite rod C4, a water distribution plate C5, and a water collecting plate C6 respectively arranged inside the filter. The water distribution plate C5 is located at the top of the filter body, and the water collecting plate C6 is located at the bottom of the filter body C1. Among them, the graphite rod C4 is connected to an external power supply through a graphite rod wire C4-1. When a certain voltage of 5-36v is applied, taking iron filings as an example, electrolysis will produce divalent iron ions. During the filtration process, divalent iron ions react with dissolved oxygen in water to generate trivalent iron ions. The generated trivalent iron ions have a coagulation effect, and the COD in the water is reduced again after filtration. The iron ions that are continuously dissolved during the electrolysis process can maintain the surface activity of iron filings or iron balls, prevent the generation of excessive ferric oxide from accumulating on the surface, which is not conducive to the reaction of dissolved oxygen in water with iron in iron filings. The active hydrogen produced by the cathode is also conducive to maintaining a reducing atmosphere in the filter. The water collecting plate C6 is connected to an external power supply through a water collecting plate wire C6-1. Specifically, the provision of the water distribution plate C5 is beneficial for uniform water flow and better filtering effect.

[0105] Specifically, the water collecting plate C6 is provided with an insulating filter layer, which can be made of quartz sand or anthracite. A layer of metal filings or metal balls, or alloy balls made of a mixture of them, can be added to the insulating filter layer. Generally, iron filings or iron balls pressed from iron filings are used for filtration, which can be used for electrochemical coagulation, and can also use metals and dissolved oxygen in water to generate oxides to achieve the purpose of deoxygenation. In addition to iron filings, iron, aluminum, zinc or copper filings can also be used to remove specific ions. Iron and aluminum filings can remove phosphates in water, and aluminum filings can remove fluoride ions in water; zinc or copper filings can remove divalent sulfur in water.

[0106] Specifically, it also includes a backwashing device, which includes a backwashing air inlet C7 provided on the water outlet pipe C3, a backwashing water inlet C8 provided on the water outlet pipe C3, and a backwashing water outlet C9 provided on the water inlet pipe C2.

[0107] Specifically, the filter body C1 is coated with epoxy resin for corrosion protection and electrochemical insulation.

[0108] Specifically, the filter body C1 is also provided with a feeding port C10, which is convenient for replacing materials.

[0109] Working principle of electrochemical filter: water enters the filter body C1 from the water inlet pipe C2 and flows out from the water outlet pipe C3; when secondary coagulation or electrochemical deoxidation is required, the graphite rod wire C4-1 is energized to the graphite rod C4, and the water collecting plate C6 is used as the cathode to make the metal chips produce electrochemical reaction. The filter medium can be quartz sand, anthracite, etc. The electrochemical reaction medium can first use iron, aluminum, zinc or copper chips to remove different components in the water. Iron, aluminum, zinc or copper chips can be placed on the filter medium. When the electrochemical filter fails, backwashing is performed, and the backwashing air inlet C7 is opened for the active filter layer, and the backwashing air inlet C7 is closed. Water is introduced from the backwashing water inlet C8 and discharged from the backwashing water outlet C9. After cleaning, the electrochemical filter can be used for filtration again.

[0110] In the electrochemical water treatment system described in the above embodiment,

[0111] The present invention selects oily wastewater, printing and dyeing wastewater, drilling wastewater, electroplating wastewater, mine water, and black and smelly water as test objects, and uses the electrochemical water treatment system described in the above embodiment to treat them, which has a good treatment effect on different pollutants in the water.

[0112] Experiment 1: A certain oily wastewater has a CODcr of 120 mg / L and contains 3.57 mg / L of sulfide.

[0113] First enter the electrochemical oxidation disinfection device, graphite is used as the electrode for both the anode and cathode, and the voltage is 5-24 volts for 30-50 minutes. Since the oily wastewater contains a large amount of sodium chloride, the active chlorine and oxygen produced by the anode have an oxidizing effect, and the active hydrogen produced by the cathode has a strong reducing effect, which is conducive to the instability of organic matter dissolved in the water and the subsequent coagulation process. Aluminum is used as an electrode in the electrochemical coagulation device, and metal balls are added by the particle adding device. Aluminum chips and copper chips are mixed at a weight ratio of 5:1, and then pressed into a spherical shape by a ball press for coagulation and desulfurization of hydrogen. The electrodes are energized for 1-3 hours, the voltage is 15-24 volts, and the distance between the plates is 5-15cm. The anode and cathode are switched every 20 minutes. Anthracite is first used as a filter medium to remove oil from the water. Since anthracite has a low cost, it is replaced with new anthracite after the filter fails. Oily anthracite is used to produce shaped coal. Then use an electrochemical filter with electrochemical function. The filter layer of the electrochemical filter is made of quartz sand. A layer of iron filings can be added on the quartz sand filter layer. The voltage of the iron filings layer is maintained at 10-20v. After filtration, the CODcr content drops to 15mg / L, hydrogen sulfide 0.05mg / L, and dissolved oxygen 0.9mg / L. L-ascorbic acid is added to the outlet of the electrochemical filter to control the concentration of L-ascorbic acid in the water at 5mg / L to maintain the reducing property of the water. It is used for deep deoxygenation and can be used for oil field reinjection water after treatment.

[0114] Experiment 2: A printing and dyeing wastewater, CODcr content is 220mg / L, S2- Content: 15.6mg / L.

[0115] In the experiment, the electrodes of the electrochemical coagulation device were iron plates, zinc plates and copper plates. The ratio of iron electrodes, zinc electrodes and copper electrodes was 10:2:1. The copper plate was installed near the outlet and powered on for 0.5-1 hour. The anode and cathode were switched every 10 minutes. The voltage was controlled at 15-24 volts and the plate spacing was 5-20 cm. The iron ions produced by the anode had a strong flocculation effect, which was beneficial to the destabilization of organic matter in the wastewater. The active hydrogen produced by the cathode also had a strong reducing effect, which could reduce organic matter in the printing and dyeing wastewater and change its existence form. The zinc ions produced by the zinc electrode reacted with S 2- Zinc sulfide precipitation is generated, and the copper ions produced by the ionization of the copper plate near the outlet are mixed with S 2- Copper sulfide precipitation was generated, and the COD content was reduced to 46 mg / L after quartz sand filtration. 2- The content is reduced to 0.9 mg / L. The filtered printing and dyeing wastewater is then electrolyzed using an electrochemical oxidation disinfection device with graphite as the anode and cathode for 30-50 minutes. Since the printing and dyeing wastewater contains a large amount of sodium chloride, chlorine and active oxygen are produced at the anode, which has oxidative decomposition and disinfection effects, thereby improving the drainage quality.

[0116] Experiment 3: A printing and dyeing wastewater, CODcr content is 220mg / L, S 2- Content: 15.6mg / L.

[0117] In the experiment, the electrodes of the electrochemical coagulation device are aluminum plates, and then the particle adding device adds aluminum chips, zinc chips and copper in a weight ratio of 10:2:1, and then the ball press machine presses the metal balls into spherical shapes. The power is turned on for 0.5-1 hour, and the anode and cathode are switched every 10 minutes. The voltage is controlled at 15-24 volts, and the plate spacing is 10-20 cm. The aluminum ions produced by the anode have a strong flocculation effect, which is conducive to the destabilization of organic matter in the wastewater. The active hydrogen produced by the cathode also has a strong reducing effect, which can reduce the organic matter in the printing and dyeing wastewater and change the existing form. The zinc ions and copper ions produced by zinc and copper, respectively, react with S 2- Zinc sulfide and copper sulfide precipitates were generated, and the COD content was reduced to 52 mg / L after quartz sand filtration. 2- The content is reduced to 1.3mg / L. The filtered printing and dyeing wastewater is then electrolyzed using an electrochemical oxidation disinfection device with graphite as the anode and cathode. The electrolysis lasts for 30-50 minutes, the voltage is 15-30v, and the plate spacing is 5-10cm. Since the printing and dyeing wastewater contains a large amount of sodium chloride, chlorine and active oxygen are produced at the anode, which has oxidative decomposition and disinfection effects, thereby improving the drainage quality.

[0118] Experiment 4: A drilling wastewater with a CODcr content of 1598 mg / L and sulfide S 2- Content 7.3mg / L.

[0119] The electrochemical coagulation device uses iron as an electrode, and the particle adding device adds iron and zinc chips in a weight ratio of 3:1, and the pellet press presses them into a spherical shape. The electrode voltage is controlled at 10-24 volts, the plate spacing is 10-15 cm, the power-on time is 1-2 hours, the anode and cathode are switched every 10 minutes, and then filtered by quartz sand, the CODcr content is reduced to 65 mg / L, and the sulfide content is reduced to 0.12 mg / L. The filtered drilling wastewater is then electrolyzed by an electrochemical oxidation disinfection device with graphite as electrodes for both the anode and cathode. After 30-50 minutes, the voltage is 20-24 volts. Since the drilling wastewater contains a large amount of sodium chloride, the anode produces an oxidation disinfection effect, thereby improving the quality of the effluent.

[0120] Experiment 5: The water from a certain mine has a fluoride ion content of 1.17 mg / L, is acidic, contains sulfide of 0.95 mg / L, and has a CODcr of 45.3 mg / L, which exceeds the drinking water standard and has an odor. It is first neutralized with sodium carbonate or potassium carbonate to a pH of about 7.

[0121] The electrodes of the electrochemical coagulation device use aluminum plates as electrodes. The aluminum electrodes are added by mixing waste aluminum chips and zinc chips and pressing them into spheres. The weight ratio of aluminum chips and zinc chips is 4:1 and pressed into spheres. The voltage is 10-25V, the distance between the plates is 5-10cm, and the anode and cathode are switched every 15 minutes. The electrolysis time is 0.5-1 hour. Aluminum ions and fluoride ions produce precipitation, and zinc ions and hydrogen sulfide react with precipitation. Then filter with quartz sand, the fluoride ion content is reduced to 0.92mg / L, and the hydrogen sulfide is reduced to 0.01mg / L. The anode and cathode of the electrochemical oxidation disinfection device both use graphite as electrodes. After 1-2 hours, the voltage is 20-30 volts, and the active chlorine and oxygen produced by the anode have a disinfecting effect, thereby improving the quality of the effluent.

[0122] Experiment 6: A polluted water body, CODcr content 59.4mg / L, S 2- Content: 0.12mg / L.

[0123] The electrochemical coagulation device uses iron as an electrode, and adds mixed metal balls made of iron filings, zinc filings and copper filings in a weight ratio of 20:2:1 pressed by a ball press. After 30-60 minutes, the voltage is 10-30V, and the plate spacing is 10-30cm. Then, it is filtered with an electrochemical filter with electrochemical function. The filter layer of the electrochemical filter can be quartz sand. A layer of iron filings is added on the quartz sand filter layer. The iron filing layer maintains a voltage of 10-20V. After filtration, CODcr is reduced to 12mg / L, and sulfide is not detected.

[0124] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. An electrochemical coagulation device, characterized in that: include: Coagulation tank (A1); A pole plate assembly is arranged in the coagulation tank (A1), comprising a non-magnetic pole plate assembly composed of a plurality of non-magnetic pole plates (A3) arranged in parallel; The plate replacement unit comprises a driving assembly arranged at both ends of the coagulation tank, a first fixing member (A5) connected to the driving assembly, and a first sliding member (A6) slidably connected to the first fixing member (A5); The non-magnetic pole plate (A3) is mounted on the first sliding member (A6) via a first mechanical slot (A8); It also includes a metal particle adding device (A4), wherein the metal particle adding device (A4) is provided with a plurality of groups of feeding pipes, each group of feeding pipes includes two symmetrically arranged feeding pipes, and the two feeding pipes are located on both sides of the non-magnetic pole plate; An insulating basket (A22) is provided around the non-magnetic pole plate (A3), the wide side of the insulating basket is fixed in the coagulation tank (A1), and the long side of the insulating basket (A22) is connected to a hydraulic cylinder (A23) installed in the coagulation tank (A1). The wide side of the insulating basket is fixed, and the long side is movable. The long side of the insulating basket is pushed to move by the hydraulic cylinder, so that the granular metal with the same or similar material as the pole plate added by the particle adding device is squeezed onto the surface of the non-magnetic pole plate to participate in the reaction; The driving assembly comprises a hydraulic mechanism (A9), a first motor (A10) mounted on the hydraulic mechanism (A9), and a bracket (A11) mounted on the hydraulic mechanism (A9); a motor shaft of the first motor (A10) is connected to a first gear (A12); a second gear (A13) is provided on the bracket (A11); the first gear (A12) is meshed with the second gear (A13); and the first fixing member (A5) is connected to the second gear (A13); The first sliding member (A6) comprises a sliding portion (A14) and claw portions (A15) arranged on both sides of the bottom of the sliding portion (A14); the sliding portion (A14) is provided with a T-shaped slider (A16) and a second motor (A17); the T-shaped slider (A16) is provided with a moving gear (A18) axially connected to the second motor (A17); the claw portion (A15) is provided with a boss (A19), and the boss (A19) corresponds to a second groove arranged on the side of the first mechanical slot (A8); the first fixed The component (A5) is provided with a T-shaped slideway (A21) matched with the T-shaped slider (A16); a first rack meshing with the moving gear (A18) is provided in the T-shaped slideway (A21); a third motor (A8-1) and a second rack (A8-2) are provided at the bottom of the first mechanical slot (A8); a third gear (A8-3) is connected to the shaft of the third motor (A8-1); the third gear (A8-3) meshes with the second rack (A8-2); and the non-magnetic pole plate is connected to the first mechanical slot via the second rack.

2. The electrochemical coagulation device according to claim 1, characterized in that: It also includes a metal particle adding device (A4), which is provided with a plurality of groups of feed pipes, each group of feed pipes includes two symmetrically arranged feed pipes, the two feed pipes are located on both sides of the non-magnetic pole plate, and each feed pipe is provided with at least two particle outlets.

3. The electrochemical coagulation device according to claim 1, characterized in that: It also includes an air blowing mechanism, which includes a first air inlet (A24) arranged on the side wall of the coagulation tank (A1) and a plurality of first air outlets (A25) arranged on the side wall of the coagulation tank (A1), wherein the first air outlets (A25) correspond to the gaps between the plates.

4. The electrochemical coagulation device according to claim 3, characterized in that: The invention also includes a control device, which includes a controller (A26) and a signal transmitter (A27), a signal receiver (A28) and a first water quality detector (A29) respectively connected to the controller. The signal transmitter (A27), the signal receiver (A28) and the first water quality detector (A29) are all arranged in the coagulation tank (A1). The signal transmitter (A27) and the signal receiver (A28) are arranged opposite to each other and are respectively located on the side walls of the coagulation tank at both ends of each row of plate assemblies. The first motor (A10), the second motor (A17), the third motor (A8-1), the hydraulic mechanism (A9) and the hydraulic cylinder (A23) are all electrically connected to the controller (A26).

5. An electrochemical water treatment system, characterized in that: It comprises the electrochemical coagulation device (A) as claimed in any one of claims 1 to 4.

6. The electrochemical water treatment system according to claim 5, characterized in that: Also included is an electrochemical oxidation disinfection device (B) using a graphite electrode, the electrochemical oxidation disinfection device (B) comprising: Oxidation disinfection pool (B1); A fixing frame (B2) is installed on the upper part of the oxidation disinfection tank (B1), and its end is connected to the oxidation disinfection tank (B1); A second sliding member (B3) is slidably connected to the fixing frame (B2); The inert electrode plate (B4) is disposed in the oxidation disinfection tank (B1) and is connected to the second sliding member (B3) via a second mechanical slot (B5); The second water quality detector (B6) is arranged in the oxidation disinfection pool (B1).

7. The electrochemical water treatment system according to claim 5 or 6, characterized in that: The invention also comprises an electrochemical filter (C), which comprises a filter body (C1), a water inlet pipe (C2) connected to the top of the filter body, a water outlet pipe (C3) connected to the bottom of the filter body, and graphite rods (C4), a water distribution plate (C5), and a water collection plate (C6) respectively arranged inside the filter, wherein the water distribution plate (C5) is located at the top of the filter body, and the water collection plate (C6) is located at the bottom of the filter body. The filter medium in the filter body (C1) is one or more of iron filings, zinc filings, and copper filings, or iron-carbon coke made from iron filings, fat coal, and coking coal.

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