A coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation

Abstract

The present invention discloses a coal chemical wastewater reuse and zero-discharge treatment device based on electrolytic oxidation, comprising a treatment tank, a carrier plate, and a filter box; a shaft is provided in the treatment tank, electrode plates are provided on both sides of the shaft, the shaft is provided with stirring blades, the treatment tank is provided with a drain pipe, and cleaning mechanisms are provided on the electrode plates; filter holes are provided on the bottom surface of the filter box, a water inlet pipe is provided on the top surface of the filter box, and a driving mechanism is provided on the carrier plate; the cleaning mechanism comprises a cleaning frame, a rack provided on the cleaning frame, and a lifting ring sleeved on the shaft; the lifting ring is fixedly connected to the rack, and the lifting ring is threadedly connected to the shaft. The driving mechanism of the present invention can drive the shaft to rotate forward and backward, so that the stirring blades stir the sewage, and at the same time the rack drives the cleaning frame to clean the electrode plates, thereby preventing organic matter from being adsorbed on the electrode plates and improving the subsequent pollutant removal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of coal chemical wastewater treatment, and in particular to a coal chemical wastewater reuse and zero-discharge treatment device based on electrolytic oxidation. Background Art

[0002] Coal chemical wastewater refers to wastewater generated during processes such as coal gasification, direct coal liquefaction, and coking. It primarily includes gasification wastewater, purified wastewater, domestic and laboratory wastewater, recycled sewage, chemical water station drainage, initial rainwater, and concentrated brine generated during wastewater treatment and reuse. This coal chemical wastewater contains large amounts of suspended solids, persistent organic pollutants, and inorganic pollutants. Direct discharge of coal chemical wastewater into water bodies can cause foul odors, eutrophication, and severe damage to aquatic ecosystems. Therefore, coal chemical wastewater treatment is essential.

[0003] Electrolysis is a common wastewater treatment method that removes harmful substances and impurities from wastewater through an electrolytic process under the action of an electric current. Electrolysis can effectively remove organic matter, heavy metal ions, and other pollutants from wastewater. However, current wastewater electrolysis equipment absorbs large amounts of organic matter onto the electrode plates during use, resulting in poor subsequent pollutant removal and affecting wastewater treatment efficiency. Therefore, there is an urgent need for coal chemical wastewater reuse and zero-emission treatment equipment based on electrolytic oxidation. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation.

[0005] The technical solution of the present invention is: a coal chemical wastewater reuse and zero-discharge treatment device based on electrolytic oxidation, comprising a treatment tank, a carrier plate arranged directly above the treatment tank, and two filter boxes respectively arranged on both sides of the carrier plate; one end of the two filter boxes is fixedly connected to the carrier plate, and the other end of the two filter boxes extends to the outside of the treatment tank and is fixedly connected to the treatment tank;

[0006] A shaft is vertically provided in the treatment tank, and an electrode plate is vertically provided on both sides of the shaft. A stirring blade is fixedly provided on the lower end of the shaft. A drainage pipe communicating with the interior of the treatment tank is provided on the bottom surface of the treatment tank. The two electrode plates are respectively a cathode plate and an anode plate.

[0007] The upper end of the shaft passes through the carrier plate and is rotatably connected to the carrier plate, the upper ends of the two electrode plates are respectively fixedly connected to the carrier plate, and both electrode plates are provided with a cleaning mechanism;

[0008] The cleaning mechanism includes two cleaning frames respectively sleeved on the corresponding electrode plates, two racks respectively vertically arranged on the corresponding cleaning frames, and a lifting ring sleeved on the shaft and located above the carrier plate;

[0009] The upper ends of the two racks pass through corresponding sliding grooves provided on the carrier plate and are slidably connected to the corresponding sliding grooves. The lifting ring is fixedly connected to the upper ends of the two racks through connecting rods provided on its side walls, and the lifting ring is threadedly connected to the shaft rod.

[0010] The bottom surfaces of the two filter boxes are both provided with a plurality of filter holes, and the top surfaces of the two filter boxes are both provided with water inlet pipes communicating with the interior thereof, and a driving mechanism for driving the shaft to rotate is provided on the carrier plate.

[0011] Description: The filter box of the above-mentioned treatment equipment can filter solid particles in the sewage, and drive the shaft to rotate forward and reverse through the driving mechanism, so that the stirring blades stir the sewage in the treatment tank. By energizing the cathode plate and the anode plate, the pollutants in the sewage are removed under the action of the current. At the same time, when the shaft rotates, the lifting ring will move back and forth along the shaft, so that the rack drives the cleaning frame to move back and forth to clean the electrode plate, thereby avoiding the adsorption of organic matter on the electrode plate and improving the subsequent pollutant removal effect.

[0012] Furthermore, a bracket is provided on the treatment pool, and a plurality of legs are provided on the bracket.

[0013] Description: The bracket can support the treatment pool and improve the stability of the treatment pool. The bracket has low manufacturing cost and good practicality.

[0014] Furthermore, the lower end of the treatment tank is funnel-shaped.

[0015] Note: Funnel-shaped treatment tanks are easier to discharge internal sediment and water, and have lower manufacturing costs.

[0016] Furthermore, a filter bottle is provided horizontally below the drain pipe and is connected to it on one side, and a water outlet pipe is provided on the other side of the filter bottle and is connected to its interior, and a filter screen is provided horizontally inside the filter bottle, and a sewage cover is provided on the sewage outlet of the filter bottle. The sewage cover is detachably connected to the filter bottle, and the filter screen is inclined toward one end of the filter bottle.

[0017] Description: The filter bottle can filter the treated sewage to reduce internal sedimentation, and the sedimentation in the filter bottle can be cleaned by opening the drain cover.

[0018] Furthermore, the driving mechanism includes a motor vertically arranged on the carrier plate, a second gear fixedly mounted on the output shaft of the motor, and a third gear fixedly mounted on the shaft and meshing with the second gear; the third gear is located below the lifting ring.

[0019] Note: The driving mechanism can drive the second gear through the motor, so that the second gear engages with the third gear to drive the shaft to rotate.

[0020] Furthermore, two rotating shafts are transversely provided in the carrier plate, and a first sunken groove is respectively provided on the carrier plate at positions corresponding to the two racks. The first sunken grooves correspond to the rotating shafts one by one, and the rotating shafts located in the two first sunken grooves are each sleeved with a first gear meshing with the corresponding rack.

[0021] A second sink groove is provided on the carrier plate at both ends of each rotating shaft, and both ends of each rotating shaft extend into the second sink groove on the corresponding side and are provided with a sleeve;

[0022] The other ends of the two filter boxes are each provided with a fixed box, a sliding plate is slidably connected to the fixed box, and each filter box is provided with two screw rods corresponding to the two sleeves on the corresponding side. One end of the screw rod passes through the corresponding filter box and is splined to the corresponding sleeve, and the other end of the screw rod passes through the filter box and the fixed box in sequence and is rotatably connected to the sliding plate;

[0023] Both filter boxes are slidably connected with a slag sweeping plate, which is threadedly connected to the two screw rods in the corresponding filter box;

[0024] The screw rod is axially connected to the corresponding filter box in a sliding manner. Both rotating shafts are axially provided with a sliding rod for linking the corresponding screw rods in the two filter boxes.

[0025] One of the side walls of the fixed box is connected to the sliding plate through a spring, and the other side wall of the fixed box is provided with an electric push rod for driving the sliding plate to slide. The electric push rod is used to control the screw rods in the two filter boxes to alternately engage with the sleeve.

[0026] Description: When the rack moves back and forth, it will drive the rotating shaft to rotate back and forth through the first gear. The electric push rod can be extended or shortened to make the screw in one filter box engage with the corresponding sleeve, so that the two filter boxes can alternately enter the cleaning mode, avoiding the two filter boxes being cleaned at the same time, resulting in the inability to continuously treat sewage. In the cleaning mode, the rotating shaft can drive the screw in one filter box to rotate, so that the slag sweeping plate in the filter box can move in the filter box and sweep the filter residue in the filter box to one side.

[0027] Furthermore, an opening is provided on the bottom surface of one side of the filter hole of the two filter boxes, and a flip plate for controlling its opening and closing is provided at the opening. A flip shaft is provided in the middle of one side of the two flip plates, and one end of the two flip shafts passes through the corresponding side wall of the filter box and is sequentially sleeved with a fourth gear and a limiting ring, and the limiting ring and the fourth gear are connected by a spring;

[0028] The two fourth gears are both spline-connected to the flip shaft, and the two limit rings are fixedly connected to the flip shaft;

[0029] The two flip shafts are both sleeved with torsion springs for resetting them, and an incomplete gear for engaging with the two fourth gears is fixedly sleeved on the shaft rod, and the side walls of the two filter boxes are both provided with pneumatic rods for controlling the engagement or disconnection of the fourth gear on the corresponding flip shaft with the incomplete gear by inflation and deflation, and the two fixed boxes are both provided with an air charging and deflation mechanism for charging and deflation of the air pressure rod on the corresponding side.

[0030] Description: The air charging and discharging mechanism can inflate the corresponding air pressure rod when the filter box is in cleaning mode, so that the fourth gear engages with the incomplete gear. The incomplete gear can drive the flip plate to flip intermittently. When the slag sweeping plate pushes the filter residue to one side of the flip plate, the flip plate can open the opening intermittently to allow the filter residue to fall, avoiding frequent manual cleaning of the filter residue.

[0031] Furthermore, the inflation and deflation mechanism is an air bag arranged between the side wall of the other end of the filter box and the sliding plate, and the two air bags are respectively connected to the air pressure rod on the corresponding side through a pipeline.

[0032] Note: When the sliding plate slides, the inflation mechanism can squeeze the airbag through the sliding plate, causing the airbag to inflate toward the corresponding gas pressure rod.

[0033] Furthermore, a collection box is provided directly below the two openings, and the two collection boxes are detachably connected to the filter box.

[0034] Description: The collection box can collect the filter residue dropped from the opening. The detachable design makes it easy to replace the collection box, making the processing equipment more convenient to use.

[0035] The beneficial effects of the present invention are:

[0036] (1) The driving mechanism of the present invention can drive the shaft to rotate forward and reverse, so that the stirring blades can stir the sewage in the treatment tank. At the same time, when the shaft rotates, the lifting ring will move back and forth along the shaft, so that the rack drives the cleaning frame to move back and forth to clean the electrode plate, thereby avoiding the adsorption of organic matter on the electrode plate and improving the subsequent pollutant removal effect.

[0037] (2) The rack of the present invention drives the rotating shaft to rotate back and forth through the first gear when it is lifted and lowered back and forth, and the electric push rod can be extended or shortened to make the screw in one filter box engage with the corresponding sleeve, so that the two filter boxes can alternately enter the cleaning mode, avoiding the two filter boxes being cleaned at the same time, resulting in the inability to continuously treat sewage.

[0038] (3) The air filling and discharging mechanism of the present invention can inflate the corresponding pneumatic rod when the filter box is in the cleaning mode, so that the fourth gear is engaged with the incomplete gear. The incomplete gear can drive the flip plate to flip intermittently. When the slag sweeping plate pushes the filter residue to one side of the flip plate, the flip plate can open the opening intermittently to allow the filter residue to fall, thereby avoiding frequent manual cleaning of the filter residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0040] Figure 2 This is a schematic diagram of the internal structure of the treatment pool in Example 1 of the present invention;

[0041] Figure 3 yes Figure 2 A magnified view of point A;

[0042] Figure 4 This is a schematic structural diagram of a filter bottle according to embodiment 1 of the present invention;

[0043] Figure 5 This is a schematic diagram of the carrier structure of Example 2 of the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of a filter box in Example 2 of the present invention;

[0045] Figure 7 This is another schematic diagram of the filter box structure in accordance with embodiment 2 of the present invention;

[0046] Figure 8 This is a schematic diagram of the rotating shaft structure of Example 2 of the present invention;

[0047] Figure 9 This is a schematic diagram of the flip axis structure of Example 3 of the present invention;

[0048] Figure 10 This is a schematic diagram of the incomplete gear structure of Example 3 of the present invention;

[0049] Figure 11 This is a schematic diagram of the structure of a filter box in Example 3 of the present invention;

[0050] Figure 12 This is another schematic diagram of the filter box structure of Example 3 of the present invention;

[0051] Among them, 1-treatment tank, 11-shaft, 111-stirring blade, 112-lifting ring, 113-third gear, 12-incomplete gear, 13-electrode plate, 131-cathode plate, 132-anode plate, 14-cleaning frame, 141-rack, 15-bracket, 151-leg, 16-filter bottle, 161-filter screen, 162-outlet pipe, 163-drain cover, 17-drain pipe, 2-filter box, 21-inlet pipe, 22-screw, 23-slag sweeping plate, 24-flip plate, 25-flip shaft, 251-limiting ring, 26-fourth gear, 27-fixed box, 271-sliding plate, 272-airbag, 28-electric push rod, 29-pneumatic rod, 3-carrying plate, 31-rotating shaft, 311-first gear, 32-motor, 321-second gear, 33-sleeve, 34-sliding rod, 35-first sink, 36-second sink, 4-collection box. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below in conjunction with specific implementation methods to better demonstrate the advantages of the present invention.

[0053] Example 1

[0054] like Figure 1 As shown, a coal chemical wastewater reuse and zero-discharge treatment device based on electrolytic oxidation includes a treatment tank 1, a carrier plate 3 arranged directly above the treatment tank 1, and two filter boxes 2 respectively arranged on the left and right sides of the carrier plate 3; the left ends of the two filter boxes 2 are fixedly connected to the carrier plate 3, and the right ends of the two filter boxes 2 extend to the outside of the treatment tank 1 and are fixedly connected to the treatment tank 1;

[0055] like Figure 2 As shown, a shaft 11 is vertically provided in the treatment tank 1, and an electrode plate 13 is vertically provided on the left and right sides of the shaft 11. A stirring blade 111 is fixedly provided at the lower end of the shaft 11. A drainage pipe 17 communicating with the interior of the treatment tank 1 is provided on the bottom surface. The two electrode plates are a cathode plate 131 and an anode plate 132.

[0056] The upper end of the shaft 11 passes through the carrier plate 3 and is rotatably connected to the carrier plate 3. The upper ends of the two electrode plates 13 are fixedly connected to the left and right side walls of the carrier plate 3 respectively, and the two electrode plates 13 are provided with a cleaning mechanism.

[0057] The cleaning mechanism includes two cleaning frames 14 respectively mounted on the corresponding electrode plates 13, two racks 141 respectively vertically arranged on the corresponding cleaning frames 14, and a lifting ring 112 mounted on the shaft 11 and located above the carrier plate 3;

[0058] The upper ends of the two racks 141 pass through the corresponding sliding grooves provided on the carrier plate 3 and are slidably connected to the corresponding sliding grooves. The lifting ring 112 is fixedly connected to the upper ends of the two racks 141 through two connecting rods provided on its side wall, and the lifting ring 112 is threadedly connected to the shaft 11;

[0059] The bottom surfaces of the two filter boxes 2 are provided with a plurality of filter holes, and the top surfaces of the two filter boxes 2 are provided with a water inlet pipe 21 communicating with the interior thereof, and a driving mechanism for driving the shaft 11 to rotate is provided on the carrier plate 3;

[0060] like Figure 3 As shown, the driving mechanism includes a motor 32 vertically arranged on the carrier plate 3, a second gear 321 fixedly mounted on the output shaft of the motor 32, and a third gear 113 fixedly mounted on the shaft 11 and meshing with the second gear 321; the motor 32 is a commercially available motor, and the third gear 113 is located below the lifting ring 112;

[0061] The treatment pool 1 is provided with a bracket 15, and the bracket 15 is provided with eight legs 151; the lower end of the treatment pool 1 is funnel-shaped;

[0062] like Figure 4 As shown, a filter bottle 16 is provided horizontally below the drain pipe 17 and is connected to the upper side thereof, a water outlet pipe 162 is provided on the lower side of the filter bottle 16 and is connected to the interior thereof, and a filter screen 161 is provided horizontally inside the filter bottle 16, and a sewage cover 163 is provided on the sewage outlet of the filter bottle 16, the sewage cover 163 is threadedly connected to the filter bottle 16, and the filter screen 161 is tilted toward one end of the filter bottle 16.

[0063] The working principle of the above-mentioned treatment equipment is as follows: sewage is added to the filter box 2 through the water inlet pipe 21, and the sewage enters the treatment tank 1 after being filtered through the filter box 2. The motor 32 is started, and the motor 32 drives the shaft 11 to rotate forward and reverse through the second gear 321 and the third gear 113. The shaft 11 drives the stirring blade 111 to stir the sewage, and the cathode plate 131 and the anode plate 132 are energized. The pollutants in the sewage are removed under the action of the current. Since the lifting ring 112 is threadedly connected to the shaft 11, when the shaft 11 rotates forward and reverse, the lifting ring 112 will reciprocate along the shaft 11. The lifting ring 112 will drive the cleaning frame 14 through the rack 141 to clean the cathode plate 131 and the anode plate 132.

[0064] Example 2

[0065] like Figure 5As shown, this embodiment is basically the same as the embodiment 1, except that two rotating shafts 31 are transversely provided in the carrier plate 3, and a first sunken groove 35 is respectively provided on the carrier plate 3 at positions corresponding to the two racks 141. The first sunken grooves 35 correspond to the rotating shafts 31 one by one, and the rotating shafts 31 located in the two first sunken grooves 35 are each sleeved with a first gear 311 that meshes with the rack 141 on the corresponding side;

[0066] A second sinking groove 36 is provided on the carrier plate 3 at the left and right ends of each rotating shaft 31. The left and right ends of each rotating shaft 31 extend into the second sinking groove 36 on the corresponding side and are provided with a sleeve 33.

[0067] like Figure 6 、 7 As shown, the left ends of the two filter boxes 2 are each provided with a fixed box 27, and a sliding plate 271 is slidably connected in the fixed box 27. Each filter box 2 is provided with two screw rods 22 corresponding to the two sleeves 33 on the corresponding side. The right end of the screw rod 22 passes through the corresponding filter box 2 and is spline-connected to the corresponding sleeve 33, and the left end of the screw rod 22 passes through the filter box 2 and the fixed box 27 in sequence and is rotatably connected to the sliding plate 271.

[0068] The two filter boxes 2 are both slidably connected with a slag sweeping plate 23, and the slag sweeping plate 23 is threadedly connected to the two screw rods 22 in the corresponding filter box 2; the screw rod 22 is axially slidably connected to the corresponding filter box 2, such as Figure 8 As shown, the two rotating shafts 31 are provided with sliding rods 34 along the axial direction to link the corresponding screw rods 22 in the two filter boxes 2;

[0069] The side wall of the right fixed box 27 is connected to the sliding plate 271 through a spring, and the side wall of the left fixed box 27 is provided with an electric push rod 28 for driving the sliding plate 271 to slide. The electric push rod 28 is used to control the screw rods 22 in the two filter boxes 2 to alternately engage with the sleeve 33.

[0070] The working principle of the above-mentioned filter box 2 is as follows: in the initial state, the screw rod 22 in the right filter box 2 is engaged with the sleeve 33 on the right side. At this time, the filter box 2 on the right side is in the cleaning mode, and the screw rod 22 in the left filter box 2 is disconnected from the sleeve 33 on the left side. The filter box 2 on the left side is in the working mode, and the sewage is filtered through the filter box 2 on the left side.

[0071] When the right filter box 2 is in the cleaning mode, as the rack 141 reciprocates and rises, the rack 141 drives the first gear 311 to rotate, and the first gear 311 drives the rotating shaft 31 to rotate. Since the screw rod 22 in the right filter box 2 is engaged with the right sleeve 33, the rotating shaft 31 drives the screw rod 22 in the right filter box 2 to rotate, and the slag sweeping plate 23 in the right filter box 2 moves from left to right, pushing the filter residue in the right filter box 2 to the right;

[0072] After the filter box 2 on the left has been working for a period of time, the electric push rod 28 can be controlled to shorten. At this time, the screw rod 22 in the left filter box 2 slides to the right under the action of the spring force and engages with the sleeve 33 on the left, and the screw rod 22 in the left filter box 2 pushes the slide rod 34 to slide to the right and contact the screw rod 22 in the right filter box 2. At this time, the filter box 2 on the left is in cleaning mode, and the filter box 2 on the right is in working mode.

[0073] Example 3

[0074] like Figure 9 As shown, this embodiment is basically the same as Example 2, except that an opening is provided on the bottom surface of the right side of the filter hole of the two filter boxes 2, and a flip plate 24 for controlling its opening and closing is provided at the opening. A flip shaft 25 is provided at the middle part of the left side of the two flip plates 24. The left ends of the two flip shafts 25 respectively pass through the side walls of the corresponding filter boxes 2 and are sequentially sleeved with a fourth gear 26 and a limiting ring 251, and the limiting ring 251 and the fourth gear 26 are connected by a spring;

[0075] The two fourth gears 26 are spline-connected to the flip shaft 25, and the two limiting rings 251 are fixedly connected to the flip shaft 25;

[0076] like Figure 10 As shown, the two flip shafts 25 are sleeved with torsion springs for resetting them, and an incomplete gear 12 for meshing with two fourth gears 26 is fixedly sleeved on the shaft 11. The number of teeth on the incomplete gear 12 is 1 / 2 of the number of teeth on a single fourth gear 26. The side walls of the two filter boxes 2 are provided with a pneumatic rod 29 for controlling the engagement or disconnection of the fourth gear 26 on the corresponding flip shaft 25 with the incomplete gear 12 by charging and discharging air, and the two fixed boxes 27 are provided with a charging and discharging mechanism for charging and discharging air to the pneumatic rod 29 on the corresponding side.

[0077] like Figure 11 、 12 As shown, the inflation and deflation mechanism is an air bag 272 provided between the right end side wall of the filter box 2 and the sliding plate 271, and the two air bags 272 are respectively connected to the gas pressure rod 29 on the corresponding side through a pipe;

[0078] A collecting box 4 is provided just below the two openings, and the two collecting boxes 4 are snap-connected to the corresponding filter boxes 2 .

[0079] The working principle of the above-mentioned flip plate 24 is as follows: in the initial state, the right filter box 2 is in the cleaning mode, at this time the air bag 272 in the right fixed box 27 is in a compressed state, and the right pneumatic rod 29 is extended to make the fourth gear 26 on the right engage with the incomplete gear 12; the left filter box 2 is in the working mode, at this time the air bag 272 in the left fixed box 27 is in an extended state, the left pneumatic rod 29 is shortened, and the fourth gear 26 on the left is disconnected from the incomplete gear 12 under the action of the spring force;

[0080] When the shaft 11 rotates, the incomplete gear 12 intermittently drives the fourth gear 26 on the right side to rotate, causing the flip plate 24 in the right filter box 2 to flip intermittently to open the opening intermittently. When the sweeping plate 23 in the right filter box 2 sweeps the filter residue to the right, the filter residue will fall from the intermittently opened opening into the collection box 4;

[0081] When the filter box 2 on the right is switched to the working mode, the airbag 272 in the right fixed box 27 is in an extended state, the gas in the right pneumatic rod 29 will flow into the right airbag 272, and the fourth gear 26 on the right is disconnected from the incomplete gear 12; at this time, the airbag 272 in the left fixed box 27 is in a compressed state, the left pneumatic rod 29 is extended to push the fourth gear 26 on the left to engage with the incomplete gear 12, and the filter box 2 on the left is switched to the cleaning mode.

Claims

1. A coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation, characterized in that: It comprises a treatment pool (1), a carrier plate (3) arranged directly above the treatment pool (1), and two filter boxes (2) respectively arranged on both sides of the carrier plate (3); one end of each of the two filter boxes (2) is fixedly connected to the carrier plate (3), and the other ends of each of the two filter boxes (2) extend to the outside of the treatment pool (1) and are fixedly connected to the treatment pool (1); A shaft (11) is vertically provided in the treatment tank (1), and an electrode plate (13) is vertically provided on both sides of the shaft (11). A stirring blade (111) is fixedly provided on the lower end of the shaft (11). A drainage pipe (17) communicating with the interior of the treatment tank (1) is provided on the bottom surface of the treatment tank (1), and the two electrode plates are a cathode plate (131) and an anode plate (132). The upper end of the shaft (11) passes through the carrier plate (3) and is rotatably connected to the carrier plate (3), the upper ends of the two electrode plates (13) are respectively fixedly connected to the carrier plate (3), and the two electrode plates (13) are provided with a cleaning mechanism; The cleaning mechanism comprises two cleaning frames (14) respectively sleeved on corresponding electrode plates (13), two racks (141) respectively vertically arranged on the corresponding cleaning frames (14), and a lifting ring (112) sleeved on the shaft (11) and located above the carrier plate (3); The upper ends of the two racks (141) pass through corresponding slide grooves provided on the carrier plate (3) and are slidably connected to the corresponding slide grooves. The lifting ring (112) is fixedly connected to the upper ends of the two racks (141) through connecting rods provided on its side walls, and the lifting ring (112) is threadedly connected to the shaft (11); The bottom surfaces of the two filter boxes (2) are both provided with a plurality of filter holes, and the top surfaces of the two filter boxes (2) are both provided with a water inlet pipe (21) communicating with the interior thereof, and a driving mechanism for driving the shaft (11) to rotate is provided on the carrier plate (3); Two rotating shafts (31) are transversely arranged in the carrier plate (3), and a first sinking groove (35) is respectively provided on the carrier plate (3) at positions corresponding to the two racks (141). The first sinking grooves (35) correspond to the rotating shafts (31) one by one, and the rotating shafts (31) located in the two first sinking grooves (35) are both sleeved with first gears (311) that mesh with the racks (141) on the corresponding side. A second sink groove (36) is provided on the carrier plate (3) at both ends of each rotating shaft (31), and both ends of each rotating shaft (31) extend into the second sink groove (36) on the corresponding side and are provided with a sleeve (33); The other ends of the two filter boxes (2) are each provided with a fixing box (27), a sliding plate (271) is slidably connected in the fixing box (27), and each filter box (2) is provided with two screw rods (22) corresponding one to one with the two sleeves (33) on the corresponding side, one end of the screw rod (22) passes through the corresponding filter box (2) and is spline-connected to the corresponding sleeve (33), and the other end of the screw rod (22) passes through the filter box (2) and the fixing box (27) in sequence and is rotatably connected to the sliding plate (271); A slag sweeping plate (23) is slidably connected to each of the two filter boxes (2), and the slag sweeping plate (23) is threadedly connected to two screw rods (22) in the corresponding filter box (2); The screw rod (22) is axially slidably connected to the corresponding filter box (2), and a sliding rod (34) is axially provided in each of the two rotating shafts (31) for linking the corresponding screw rods (22) in the two filter boxes (2); The side wall of one of the fixed boxes (27) is connected to the sliding plate (271) via a spring, and the side wall of the other fixed box (27) is provided with an electric push rod (28) for driving the sliding plate (271) to slide. The electric push rod (28) is used to control the screw rods (22) in the two filter boxes (2) to alternately engage with the sleeves (33).

2. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 1 is characterized in that: A bracket (15) is sleeved on the treatment pool (1), and a plurality of supporting legs (151) are provided on the bracket (15).

3. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 1 is characterized in that: The lower end of the treatment pool (1) is funnel-shaped.

4. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 1 is characterized in that: A filter bottle (16) is provided transversely below the drain pipe (17) and is connected to the drain pipe (17) on one side. A water outlet pipe (162) is provided on the other side of the filter bottle (16) and is connected to the interior of the filter bottle (16). A filter screen (161) is provided transversely inside the filter bottle (16). A drain cover (163) is provided on the drain outlet of the filter bottle (16). The drain cover (163) is detachably connected to the filter bottle (16), and the filter screen (161) is tilted toward one end of the filter bottle (16).

5. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 1 is characterized in that: The driving mechanism comprises a motor (32) vertically arranged on the carrier plate (3), a second gear (321) fixedly sleeved on the output shaft of the motor (32), and a third gear (113) fixedly sleeved on the shaft (11) and meshing with the second gear (321); the third gear (113) is located below the lifting ring (112).

6. The electrolytic oxidation-based coal chemical wastewater reuse and zero-discharge treatment equipment according to claim 1, characterized in that: An opening is provided on the bottom surface of one side of the filter hole of the two filter boxes (2), and a flip plate (24) for controlling the opening and closing thereof is provided at the opening. A flip shaft (25) is provided in the middle of one side of the two flip plates (24). One end of the two flip shafts (25) passes through the side wall of the corresponding filter box (2) and is sequentially sleeved with a fourth gear (26) and a limiting ring (251), and the limiting ring (251) and the fourth gear (26) are connected by a spring. The two fourth gears (26) are both spline-connected to the flip shaft (25), and the two limiting rings (251) are fixedly connected to the flip shaft (25); The two flip shafts (25) are both sleeved with torsion springs for resetting them, an incomplete gear (12) for meshing with the two fourth gears (26) is fixedly sleeved on the shaft (11), and a pneumatic rod (29) for controlling the meshing or disconnection of the fourth gear (26) on the corresponding flip shaft (25) and the incomplete gear (12) by means of inflation or deflation is provided on the side walls of the two filter boxes (2), and an air charging and deflation mechanism for charging and deflation of the air pressure rod (29) on the corresponding side is provided in the two fixed boxes (27).

7. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 6, characterized in that: The inflation and deflation mechanism is an air bag (272) provided between the side wall of the other end of the filter box (2) and the sliding plate (271), and the two air bags (272) are respectively connected to the air pressure rod (29) on the corresponding side through a pipeline.

8. The coal chemical wastewater reuse and zero-discharge treatment equipment based on electrolytic oxidation according to claim 6, characterized in that: A collection box (4) is provided directly below the two openings, and the two collection boxes (4) are detachably connected to the filter box (2).

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