Zero-discharge treatment device and method for concentrated discharged water of power plant

Abstract

The invention belongs to the field of concentrated discharged water discharge treatment, and particularly relates to a power plant concentrated discharged water zero discharge treatment device and a method thereof.The power plant concentrated discharged water zero discharge treatment device comprises a reaction barrel, a stirring rod fixed to the bottom of the reaction barrel in a communicating mode, a stirring rod rotationally connected to the middle of the reaction barrel and a filtering adjusting mechanism used for separating sediment generated by discharged water; the filtering adjusting mechanism comprises a sleeve shell in threaded connection with the bottom of the peripheral surface of the discharging pipe, a filter screen fixed at the position of an inner cavity of the sleeve shell, a filter disc assembly for separating heavy metal precipitates, and an anti-blocking assembly acting on the filter disc assembly; the second filter holes are communicated with the two first filter holes adjacent to the second filter holes, and the movable disc drives the insertion rod to reciprocate in the vertical direction during filtering treatment, so that blocky heavy metal can be prevented from precipitating to block the first filter holes and the second filter holes during filtering; therefore, the separation effect of the drained water and the sediment after the sediment is promoted is ensured.

Description

Technical Field

[0001] The invention belongs to the field of concentrated wastewater discharge treatment, in particular to a concentrated wastewater zero-discharge treatment device and method for a power plant. Background Art

[0002] The zero-emission treatment method for concentrated wastewater from power plants mainly includes three main steps: pretreatment, concentration treatment and evaporation crystallization. The pretreatment stage is mainly to remove suspended matter, hardness, alkalinity, heavy metals, etc. in the wastewater to meet the water inlet requirements of the subsequent system and avoid scaling and clogging in the subsequent treatment system.

[0003] In the prior art, concentrated wastewater pretreatment devices of power plants promote the sedimentation of suspended matter by adding coagulants, and then perform solid-liquid separation. In the solid-liquid separation process, filtering is mostly performed directly through the filter plates arranged inside. However, since flocculent suspended matter and massive heavy metal precipitation are prone to coexist during the pretreatment process, the filter plates are easily clogged, which is not conducive to the pretreatment of wastewater.

[0004] To this end, the present invention provides a zero-discharge treatment device and method for concentrated wastewater from a power plant. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a zero-discharge treatment device for concentrated wastewater from a power plant according to the present invention comprises a reaction barrel, a discharge pipe connected and fixed at the bottom of the reaction barrel, a stirring rod rotatably connected to the middle of the reaction barrel, and a filtering and regulating mechanism for separating sediments generated by the wastewater;

[0007] The filtering and adjusting mechanism comprises a casing threadedly connected to the bottom of the outer peripheral surface of the discharge pipe, a filter screen fixed at the inner cavity of the casing, a filter disc assembly for separating heavy metal precipitation, an anti-blocking assembly acting on the filter disc assembly, and a driving assembly acting on the stirring rod and the anti-blocking assembly;

[0008] The filter disc assembly comprises an outer shell fixed at the middle position of the inner cavity of the reaction barrel, a rotating disc rotatably connected to the middle position of the inner cavity of the outer shell, first filter holes evenly arranged on the upper and lower surfaces of the outer shell, and second filter holes evenly penetrating and arranged on the surface of the rotating disc, an annular groove arranged in the inner cavity of the outer shell close to the outer circumference of the rotating disc, a limiting ring fixed to the outer circumference of the rotating disc, and a rotating component for driving the rotating disc to rotate;

[0009] The anti-blocking component includes a movable disk arranged at the bottom of the outer shell, an insertion rod evenly fixed at the top of the movable disk, a rotating shaft rotatably connected to the inner cavity of the reaction barrel at the bottom of the movable disk, a cam fixedly sleeved on the outer circumference of the rotating shaft, and a first spring telescopic rod fixed at both ends of the bottom of the movable disk.

[0010] Preferably, the first filter hole is connected to the inner cavity of the second filter hole at an adjacent position, the limiting ring is slidably connected to the ring groove, the surface of one end of the cam is in conflict with the surface of the bottom of the movable disk, the bottom of the first spring telescopic rod is fixed to the inner cavity surface of the reaction barrel, and one side of the rotating shaft passes through the reaction barrel and extends out of the reaction barrel.

[0011] Preferably, the driving assembly includes a motor fixed to one side of the top of the reaction barrel, a movable rod rotatably connected to the other side of the top of the reaction barrel, a rotating rod rotatably connected to one side of the outer circumference of the reaction barrel, a first bevel gear fixedly sleeved at the external position of the reaction barrel where the stirring rod extends, a second bevel gear fixedly sleeved on one side of the outer circumference of the motor and the outer circumference of the movable rod, a plug-in component for connecting the rotating rod and the rotating shaft, a pulley fixedly sleeved on the other side of the outer circumference of the movable rod, and a connecting belt arranged at the middle position of the two pulleys, and the first bevel gear and the two second bevel gears are meshingly connected.

[0012] Preferably, the rotating component includes a second rotating rod inserted through the middle position of the stirring rod, a toggle plate fixed to the outer circumferential surface of the second rotating rod, a fixing seat fixed in an L-shape at one end of the top of the reaction barrel, and positioning columns arranged on both sides of the toggle plate, the bottom of the positioning column is fixed to the surface of the fixing seat, and the bottom of the second rotating rod is fixed to the middle position of the top surface of the rotating disk.

[0013] Preferably, the plug-in component includes an inner groove opened on one side surface of the rotating rod, an interference groove opened at the external position of the reaction barrel where the rotating shaft extends, a first threaded rod threadedly connected to the middle position of the rotating rod, a movable block rotatably connected to one side of the first threaded rod, a connecting shaft slidably inserted in the inner cavity of one end of the one side surface of the movable block, a damper fixed to the inner cavity of the other end of the one side surface of the movable block, and a connecting spring fixed to the one side surface of the connecting shaft, one side of the connecting spring is fixed to one of the inner cavities of the movable block, one side of the damper is fixed to the surface of the plug-in block, and the surface of the movable block fits with the inner cavity of the inner groove.

[0014] Preferably, it also includes a cleaning mechanism for cleaning the inner circumference of the reaction barrel and the surface of the outer shell, the cleaning mechanism includes a sleeve fixedly mounted on the outer circumference of the stirring rod at the inner cavity of the reaction barrel, a first brush plate symmetrically arranged at both sides of the bottom of the sleeve, an axle seat fixed to the side where the two first brush plates are close to each other, a second brush plate arranged at the bottom of the stirring rod, a displacement component acting on the axle seat, and an interference component acting on the second brush plate.

[0015] The gear train is a gear that is engaged with the gear of the first and second gears and is connected with the gear of the first gear to the gear of the second end in a gear rotation with the help of the gear train.

[0016] Preferably, the resistance component includes a movable plate slidably inserted through the stirring rod at the bottom position of the second brush plate, a second spring telescopic rod fixed to the surface of the stirring rod at the top position of the movable plate, and a resistance plate arranged at one end of the second brush plate, one side of the resistance plate is fixed to the surface of the first brush plate at an adjacent position, and one end of the first brush plate is fixed to the surface of the resistance plate.

[0017] A method for treating concentrated wastewater from a power plant with zero discharge, the method comprising the following steps:

[0018] S1: The power plant wastewater is transported to the inner cavity of the reaction barrel and a coagulant is added therein, and the motor is started to rotate the stirring rod to promote a thorough mixing reaction between the wastewater and the coagulant. After a period of time, sediment is generated in the wastewater due to the reaction, and the motor is turned off;

[0019] S2: The toggle plate drives the second rotating rod to rotate so that the first filter hole is opposite to the second filter hole, and the first threaded rod is rotated so that the insert block is inserted into the inner part of the interference groove, and the motor is started again so that the insert rod can be inserted back and forth between the first filter hole and the second filter hole to perform filtering operation;

[0020] S3: After the filtration is completed, the motor is turned off, the casing is disassembled, the discharge pipe is sealed, and the cleaning liquid is added to the inside of the discharge pipe. Then, the first brush plate is made to fit the inner surface of the reaction barrel and the second brush plate is made to fit the surface of the outer shell by rotating the first rotating rod, and then the motor is started again to perform friction cleaning operation on the inner surface of the reaction barrel and the surface of the outer shell;

[0021] S4: After the cleaning is completed, the discharge pipe is unsealed and the sleeve shell is reinstalled, and the first threaded rod is rotated to make the plug-in block disengage from the inside of the interference groove, and the first rotating rod is rotated to separate the first brush plate and the second brush plate and the inner circumference of the reaction barrel from the surface of the outer shell, and finally the second rotating rod is rotated to make the rotating disk rotate so that the outer shell is in a sealed state, waiting for the next stage of drainage to enter.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention first rotates the second rotating rod to allow the rotating disk to rotate when filtering treatment is required, so that the second filter hole is connected with the two first filter holes at adjacent positions, and the movable disk drives the plug rod to reciprocate in the vertical direction during filtering treatment, thereby preventing blocky heavy metal precipitation from clogging the first filter hole and the second filter hole during filtering, thereby ensuring the separation effect of the drainage and sediment after precipitation, thereby improving the working effect of the pretreatment process for the drainage.

[0024] 2. When the inner wall of the inner cavity of the reaction barrel and the top of the outer shell needs to be cleaned, the first brush plate can be attached to the inner circumference of the reaction barrel and the second brush plate can be attached to the surface of the outer shell by rotating the first rotating rod, so that the inner circumference of the reaction barrel and the surface of the outer shell are frictionally cleaned under the drive of the stirring rod, so that the flocculent sediment attached to the inner cavity of the reaction barrel at the top of the outer shell is separated from the inside of the reaction barrel and the surface of the outer shell, so as to be discharged to the outside of the reaction barrel, thereby preventing excessive flocculent sediment attached to the inner wall of the reaction barrel and not cleaned from affecting the mixing process of drainage and coagulant, and the first brush plate and the second brush plate can be reset during the stirring process to reduce the influence of the stirring process on the stirring rod, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the front view direction;

[0027] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the present invention in the front view direction;

[0028] Figure 3 The present invention Figure 2A schematic diagram of the structure enlargement at the center A;

[0029] Figure 4 The present invention Figure 2 A schematic diagram of the structure enlarged at B in the middle;

[0030] Figure 5 is a schematic cross-sectional view of the three-dimensional structure of the stirring rod in the present invention;

[0031] Figure 6 The present invention Figure 5 A schematic diagram of the structure enlarged at C in the middle;

[0032] Figure 7 The present invention Figure 5 A schematic diagram of the structure at D in the middle is enlarged;

[0033] Figure 8 is a schematic cross-sectional view of the three-dimensional structure of the outer shell of the present invention;

[0034] Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of a local structure in the present invention;

[0035] Fig.10 It is a flow chart of the method for using the zero-discharge treatment device for concentrated wastewater from a power plant in the present invention.

[0036] In the figure: 1, reaction barrel; 2, discharge pipe; 3, stirring rod; 4, motor; 5, outer shell; 6, rotating disk; 7, first filter hole; 8, second filter hole; 9, ring groove; 10, limit ring; 11, movable disk; 12, plug rod; 13, rotating shaft; 14, cam; 15, first spring telescopic rod; 16, sleeve; 17, filter screen; 18, rotating rod; 19, movable rod; 20, first bevel gear; 21, second bevel gear; 22, pulley; 23, connecting belt; 24, first threaded rod; 25 , inner groove; 26, movable block; 27, plug block; 28, resistance groove; 29, connecting spring; 30, connecting shaft; 31, damper; 32, fixed seat; 33, first rotating rod; 34, second rotating rod; 35, sleeve seat; 36, second threaded rod; 37, third bevel gear; 38, fourth bevel gear; 39, threaded sleeve; 40, shaft seat; 41, first brush plate; 42, second brush plate; 43, movable plate; 44, second spring telescopic rod; 45, resistance plate; 46, toggle plate; 47, positioning column. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] Embodiment 1

[0039] like Figures 1 to 9As shown, a zero-discharge treatment device for concentrated wastewater from a power plant according to an embodiment of the present invention comprises a reaction barrel 1, a stirring rod 3 connected and fixed at the bottom of the reaction barrel 1, a stirring rod 3 rotatably connected to the middle of the reaction barrel 1, and a filtering and regulating mechanism for separating sediment generated by the wastewater;

[0040] The filter adjustment mechanism includes a casing 16 threadedly connected to the bottom of the outer peripheral surface of the discharge pipe 2, a filter screen 17 fixed at the inner cavity of the casing 16, a filter disc assembly for separating heavy metal precipitation, an anti-blocking assembly acting on the filter disc assembly, and a driving assembly acting on the stirring rod 3 and the anti-blocking assembly;

[0041] By adding a coagulant to the interior of the reaction barrel 1 and rotating the stirring rod 3 after drainage, the mixing reaction between the two can be promoted to promote the precipitation of suspended matter, the metal precipitates contained in the drainage after the reaction can be filtered through the filter disc assembly, and the filter disc assembly can be prevented from being blocked when filtering the metal precipitates through the anti-clogging assembly. The flocculent precipitates contained in the drainage can be filtered through the filter screen 17, and due to the connection relationship between the shell 16 and the discharge pipe 2, it can be replaced regularly to prevent affecting the filtering of the flocculent precipitates. The driving assembly can drive the stirring rod 3 to rotate and the anti-clogging assembly to work, and the sealing door arranged on the surface of the reaction barrel 1 can be opened to clean the metal precipitates accumulated on the top surface of the outer shell 5.

[0042] Please refer to Figure 1-9 As shown, the filter disc assembly includes an outer shell 5 fixed at the middle position of the inner cavity of the reaction barrel 1, a rotating disc 6 rotatably connected to the middle position of the inner cavity of the outer shell 5, first filter holes 7 uniformly arranged on the upper and lower end surfaces of the outer shell 5, and second filter holes 8 uniformly penetrating and arranged on the surface of the rotating disc 6, an annular groove 9 arranged in the inner cavity of the outer shell 5 close to the outer circumference of the rotating disc 6, a limiting ring 10 fixed to the outer circumference of the rotating disc 6, and a rotating component for driving the rotating disc 6 to rotate, the first filter hole 7 is connected to the inner cavity of the second filter hole 8 at an adjacent position, and the limiting ring 10 is slidably connected to the annular groove 9;

[0043] When filtering is required, the rotating disk 6 is rotated by a certain angle through a rotating component, so that the first filter hole 7 is connected with the second filter hole 8 at an adjacent position, so that after the drainage mixing reaction, the drainage and flocculent sediment can pass through the first filter hole 7 to flow to the bottom of the outer shell 5 in the inner cavity of the reaction barrel 1 to filter the metal sediment. In this process, the rotation of the rotating disk 6 can be limited due to the interference and limiting effect between the inner surface of the annular groove 9 and the surface of the limit ring 10.

[0044] Please refer to Figure 1-9As shown, the rotating component includes a second rotating rod 34 inserted through the middle position of the stirring rod 3, a toggle plate 46 fixed to the outer peripheral surface of the second rotating rod 34, a fixed seat 32 fixed to the top end of the reaction barrel 1 in an L-shaped arrangement, and positioning columns 47 arranged on both sides of the toggle plate 46, the bottom of the positioning column 47 is fixed to the surface of the fixed seat 32, and the bottom of the second rotating rod 34 is fixed to the middle position of the top surface of the rotating disk 6;

[0045] By rotating the toggle plate 46, the angle of the second rotating rod 34 can be changed, thereby driving the rotating disk 6 to rotate, and due to the interference of two positioning columns 47 fixed to the fixed seat 32, the rotation amplitude of the rotating disk 6 can be positioned, so that when the toggle plate 46 conflicts with one of the positioning columns 47, the first filter hole 7 and the second filter hole 8 at the adjacent position are connected, and when the toggle plate 46 conflicts with the other positioning column 47, the first filter hole 7 and the second filter hole 8 at the adjacent position are not in a connected state, so that when the drainage and the coagulant are mixed and stirred, they will not flow to the bottom position of the inner cavity of the reaction barrel 1.

[0046] Please refer to Figure 1-9 As shown, the anti-blocking component includes a movable disk 11 arranged at the bottom position of the outer shell 5, an insertion rod 12 uniformly fixed at the top position of the movable disk 11, a rotating shaft 13 rotatably connected to the inner cavity of the reaction barrel 1 at the bottom position of the movable disk 11, a cam 14 fixedly sleeved on the outer circumference of the rotating shaft 13, and a first spring telescopic rod 15 fixed at the two ends of the bottom of the movable disk 11, the surface of one end of the cam 14 conflicts with the surface of the bottom of the movable disk 11, the bottom of the first spring telescopic rod 15 is fixed to the inner cavity surface of the reaction barrel 1, and one side of the rotating shaft 13 passes through the reaction barrel 1 and extends out of the reaction barrel 1;

[0047] When the movable disk 11 rotates, the cam 14 is driven to rotate as well, so that under the interference between the rotating shaft 13 and the movable disk 11 and the rebound force of the first spring telescopic rod 15, the movable disk 11 can reciprocate in the vertical direction, so that the insertion rod 12 can pass through the first filter hole 7 and the second filter hole 8 at adjacent positions, so as to push the sediment blocking the first filter hole 7 and the second filter hole 8 to the top of the outer shell 5, thereby preventing the outer shell 5 and the rotating disk 6 from being blocked when filtering metal sediment.

[0048] Please refer to Figure 1-9As shown, the driving assembly includes a motor 4 fixed to one side of the top of the reaction barrel 1, a movable rod 19 rotatably connected to the other side of the top of the reaction barrel 1, a rotating rod 18 rotatably connected to one side of the outer peripheral surface of the reaction barrel 1, a first bevel gear 20 fixedly sleeved at the outer position of the reaction barrel 1 where the stirring rod 3 extends, a second bevel gear 21 fixedly sleeved on the outer peripheral surface of the motor 4 and one side of the outer peripheral surface of the movable rod 19, a plug-in component for connecting the rotating rod 18 and the rotating shaft 13, a pulley 22 fixedly sleeved on the other side of the outer peripheral surface of the movable rod 19, and a connecting belt 23 arranged at a middle position between the two pulleys 22, and the first bevel gear 20 and the two second bevel gears 21 are meshed and connected;

[0049] When the motor 4 is started, the output end of the motor 4 can drive one of the first bevel gears 20 to rotate, so that the first bevel gear 20 can rotate the stirring rod 3 under the meshing action with the second bevel gear 21, so that the stirring rod 3 can mix and stir the drainage and coagulant placed in the inner cavity of the reaction barrel 1. When the stirring rod 3 rotates, the movable rod 19 is rotated under the meshing action between the first bevel gear 20 and the other second bevel gear 21, so that the rotating rod 18 can be rotated under the meshing action between the pulley 22 and the connecting belt 23. When the anti-blocking component needs to be operated, the rotating rod 18 can drive the rotating shaft 13 to rotate through the plug-in component, and the stirring rod 3 mixes the drainage and coagulant entering the inner cavity of the reaction barrel 1. The first filter hole 7 and the second filter hole 8 at the adjacent position are in a disconnected state, so that the rotating shaft 13 does not rotate.

[0050] Please refer to Figure 1-9 As shown, the plug-in component includes an inner groove 25 opened on one side surface of the rotating rod 18, an abutment groove 28 opened at the outer position of the reaction barrel 1 where the rotating shaft 13 extends, a first threaded rod 24 threadedly connected to the middle position of the rotating rod 18, a movable block 26 rotatably connected to one side of the first threaded rod 24, a connecting shaft 30 slidably inserted in the inner cavity of one end of the one side surface of the movable block 26, a damper 31 fixed to the inner cavity of the other end of the one side surface of the movable block 26, and a connecting spring 29 fixed to the surface of one side of the connecting shaft 30, one side of the connecting spring 29 is fixed to one of the inner cavities of the movable block 26, one side of the damper 31 is fixed to the surface of the insert block 27, and the surface of the movable block 26 is in contact with the inner cavity of the inner groove 25;

[0051] Due to the connection between the inner groove 25 and the movable block 26, the movable block 26 can only slide in the horizontal direction under the interference of the inner cavity of the inner groove 25 on the movable block 26. Therefore, when the first threaded rod 24 is rotated, the first threaded rod 24 extends in the horizontal direction, and the movable block 26 slides in the horizontal direction under the drive of the damper 31 and the connecting shaft 30. In this process, if the insert block 27 fails to directly fit into the inner cavity of the interference groove 28, it will conflict with the surface of the rotating shaft 13, so that the connecting spring 28 is The spring 29 and the damper 31 contract, and the inner cavity of the interference groove 28 is aligned with the plug block 27 by rotating the rotating shaft 13 at a certain angle, and the plug block 27 is embedded in the inner cavity of the interference groove 28 under the action of the rebound force of the connecting shaft 30 and the damper 31, so that when the rotating rod 18 rotates, the rotating shaft 13 can be driven to rotate under the interference between the plug block 27 and the interference groove 28. When the rotating rod 18 needs to be stationary, the first threaded rod 24 is rotated in the opposite direction to make the plug block 27 disengage from the inside of the interference groove 28.

[0052] Embodiment 2

[0053] Please refer to Figure 1-9 As shown, when filtering through the filter assembly, too much flocculent mixture will adhere to the inner circumferential surface of the inner cavity of the reaction barrel 1 at the top position of the outer shell 5 and the surface of the outer shell 5, which will affect the mixing effect between the drainage and the coagulant when used next time.

[0054] For this purpose, a cleaning mechanism is also included for cleaning the inner peripheral surface of the reaction barrel 1 and the surface of the outer shell 5;

[0055] The cleaning mechanism includes a sleeve 35 fixedly sleeved on the outer circumference of the stirring rod 3 at the inner cavity of the reaction barrel 1, first brush plates 41 symmetrically arranged at both sides of the bottom of the sleeve 35, an axle seat 40 fixed to the side where the two first brush plates 41 are close to each other, a second brush plate 42 arranged at the bottom of the stirring rod 3, a displacement component acting on the axle seat 40, and an interference component acting on the second brush plate 42;

[0056] The displacement component enables the first brush plate 41 to fit together with the inner circumference of the reaction barrel 1 at the top position of the outer shell 5 when the inner cavity surface of the reaction barrel 1 needs to be cleaned, so that when the stirring rod 3 rotates, the flocculent sediment attached to the inner circumference of the reaction barrel 1 can be detached through the scraping action of the first brush plate 41 on the inner circumference of the reaction barrel 1, and when the first brush plate 41 fits the inner circumference of the reaction barrel 1, the second brush plate 42 can fit the surface of the outer shell 5 under the action of the resistance component, and it can also rub the surface of the outer shell 5 with the rotation of the stirring rod 3 to detach the attached flocculent sediment, so that it can flow to the bottom position of the inner cavity of the reaction barrel 1 through the first filter hole 7 and the second filter hole 8 with the cleaning liquid, thereby not only cleaning the sediment attached to the inner circumference of the reaction barrel 1 and the surface of the outer shell 5 but also not affecting the rotation state of the stirring rod 3 during stirring.

[0057] Please refer to Figure 1-9 As shown, the displacement assembly includes a second threaded rod 36 rotatably connected to both sides of the inner cavity surface of the sleeve 35, a threaded sleeve 39 threadedly connected to the outer circumference of the second threaded rod 36 at the inner cavity position of the sleeve 35, a first rotating rod 33 rotatably connected to the inner cavity position of the stirring rod 3, a third bevel gear 37 fixedly sleeved on the outer circumference of the first rotating rod 33, and a fourth bevel gear 38 fixedly sleeved on the outer circumference of the second threaded rod 36 at the inner cavity position of the stirring rod 3. The third bevel gear 37 and the fourth bevel gear 38 are meshedly connected, the inner cavity of the sleeve 35 is rotatably connected to the inner cavity surface of the stirring rod 3, one end of the first rotating rod 33 passes through the stirring rod 3 and extends to the outside of the stirring rod 3, the first rotating rod 33 and the second rotating rod 34 are connected in a through-insertion manner, the inner cavity surface of the sleeve 35 is in contact with the surface of the threaded sleeve 39, the top of the shaft seat 40 is fixed to the surface of the threaded sleeve 39 at the adjacent position, and the first rotating rod 33 is rotatably connected to the fixed seat 32;

[0058] By rotating the first rotating rod 33, the two second threaded rods 36 are rotated synchronously under the meshing action between the third bevel gear 37 and the second threaded rod 36, so that the threaded sleeve 39 can move in the horizontal direction under the interference and limiting action of the inner cavity surface of the sleeve seat 35 and the cooperation action between the inner thread structure of the inner wall of the threaded sleeve 39. When the surface of the reaction barrel 1 needs to be cleaned, the two threaded sleeves 39 are moved in the direction away from each other, thereby driving the distance between the two sets of shaft seats 40 and the first brush plate 41 to change, so that they can fit the inner circumferential surface of the reaction barrel 1, and the lengths of the two first brush plates 41 are inconsistent, so that the inner circumferential surface of the reaction barrel 1 can be more fully scratched and cleaned without interfering with the second brush plate 42. When the stirring rod 3 stirs the drainage and the coagulant, the shaft seat 40 and the first brush plate 41 are moved in the direction close to each other, so that they will not affect the rotation state of the stirring rod 3.

[0059] Please refer to Figure 1-9 As shown, the abutment component includes a movable plate 43 that is inserted and slidably penetrates the stirring rod 3 at the bottom of the second brush plate 42, a second spring telescopic rod 44 that is fixed to the surface of the stirring rod 3 at the top of the movable plate 43, and an abutment plate 45 that is arranged at one end of the second brush plate 42, one side of the abutment plate 45 is fixed to the surface of the first brush plate 41 at the adjacent position, and one end of the first brush plate 41 is fixed to the surface of the abutment plate 45;

[0060] When the first brush plate 41 moves toward the inner circumference of the reaction barrel 1, it can drive the resistance plate 45 to move, so that the second spring telescopic rod 44 is extended under the resistance effect of the inclined surface of the resistance plate 45 and the inclined surface of the second brush plate 42, so that the movable plate 43 can drive the second brush plate 42 to vertically downward fit the surface of the outer shell 5, so that under the resistance effect of the movable plate 43 and the stirring rod 3, the second brush plate 42 can rotate in a circular motion with the stirring rod 3 to clean the surface of the outer shell 5, and when the first brush plate 41 moves in a direction approaching each other, the resistance plate 45 and the second brush plate 42 are separated, so that under the action of the rebound force of the second spring telescopic rod 44, the second brush plate 42 moves vertically upward and separates from the surface of the outer shell 5, so that it will not affect the rotation state of the stirring rod 3.

[0061] like Fig.10 As shown, a method for treating concentrated wastewater from a power plant with zero discharge is provided. The method adopts the above-mentioned device for treating concentrated wastewater from a power plant with zero discharge, and comprises the following steps:

[0062] S1: The power plant wastewater is transported to the inner cavity of the reaction barrel 1 and a coagulant is added therein, and the motor 4 is started to rotate the stirring rod to promote a thorough mixing reaction between the wastewater and the coagulant. After a period of time, a precipitate is generated in the wastewater due to the reaction, and the motor 4 is turned off;

[0063] S2: The toggle plate 46 drives the second rotating rod to rotate so that the first filter hole 7 and the second filter hole 8 are opposite to each other, and the first threaded rod 24 is rotated so that the insert block 27 is inserted into the inner part of the abutment groove 28, and the motor 4 is started again so that the insert rod 12 can be inserted back and forth between the first filter hole 7 and the second filter hole 8 to perform filtering operation;

[0064] S3: After the filtration is completed, the motor 4 is turned off, the sleeve 16 is disassembled, the discharge pipe 2 is sealed, and the cleaning liquid is added to the inside of the discharge pipe 2. Then, the first rotating rod 33 is rotated to make the first brush plate 41 fit the inner circumference of the reaction barrel 1 and the second brush plate 42 fit the surface of the outer shell 5, and then the motor 4 is started again to perform friction cleaning operation on the inner circumference of the reaction barrel 1 and the surface of the outer shell 5;

[0065] S4: After the cleaning is completed, the discharge pipe 2 is unsealed and the sleeve 16 is reinstalled, and the first threaded rod 24 is rotated to make the plug 27 disengage from the inside of the abutment groove 28, and the first rotating rod 33 is rotated to separate the first brush plate 41 and the second brush plate 42 and the inner circumference of the reaction barrel 1 from the surface of the outer shell 5, and finally the second rotating rod 34 is rotated to make the rotating disk 6 rotate so that the outer shell 5 is in a sealed state, waiting for the next stage of drainage to enter.

Claims

1. A zero-discharge treatment device for concentrated wastewater from a power plant, comprising a reaction barrel (1), a discharge pipe (2) connected and fixed to the bottom of the reaction barrel (1), and a stirring rod (3) rotatably connected to the middle of the reaction barrel (1), characterized in that: It also includes a filter regulating mechanism for separating sediment generated by drainage; The filtering and adjusting mechanism comprises a casing (16) threadedly connected to the bottom of the outer peripheral surface of the discharge pipe (2), a filter screen (17) fixed at the inner cavity of the casing (16), a filter disc assembly for separating heavy metal precipitation, an anti-blocking assembly acting on the filter disc assembly, and a driving assembly acting on the stirring rod (3) and the anti-blocking assembly; The filter disc assembly comprises an outer shell (5) fixed at the middle position of the inner cavity of the reaction barrel (1), a rotating disc (6) rotatably connected to the middle position of the inner cavity of the outer shell (5), first filter holes (7) uniformly arranged on the upper and lower surfaces of the outer shell (5), second filter holes (8) uniformly penetrating the surface of the rotating disc (6), an annular groove (9) arranged in the inner cavity of the outer shell (5) close to the outer circumference of the rotating disc (6), a limiting ring (10) fixed to the outer circumference of the rotating disc (6), and a rotating component for driving the rotating disc (6) to rotate; The anti-blocking component comprises a movable disk (11) arranged at the bottom position of the outer shell (5), an insertion rod (12) uniformly fixed at the top position of the movable disk (11), a rotating shaft (13) rotatably connected to the inner cavity of the reaction barrel (1) and located at the bottom position of the movable disk (11), a cam (14) fixedly sleeved on the outer peripheral surface of the rotating shaft (13), and a first spring telescopic rod (15) fixed at the two end positions of the bottom of the movable disk (11).

2. A zero-discharge treatment device for concentrated wastewater from a power plant according to claim 1, characterized in that: The first filter hole (7) is connected to the inner cavity of the second filter hole (8) at the adjacent position, the limiting ring (10) is slidably connected to the annular groove (9), the surface of one end of the cam (14) is in contact with the surface of the bottom of the movable disk (11), the bottom of the first spring telescopic rod (15) is fixed to the inner cavity surface of the reaction barrel (1), and one side of the rotating shaft (13) passes through the reaction barrel (1) and extends out of the reaction barrel (1).

3. A zero-discharge treatment device for concentrated wastewater from a power plant according to claim 2, characterized in that: The driving assembly comprises a motor (4) fixed to one side of the top of the reaction barrel (1), a movable rod (19) rotatably connected to the other side of the top of the reaction barrel (1), a rotating rod (18) rotatably connected to one side of the outer peripheral surface of the reaction barrel (1), a first bevel gear (20) fixedly sleeved at an external position of the reaction barrel (1) where the stirring rod (3) extends, a second bevel gear (21) fixedly sleeved on one side of the outer peripheral surface of the motor (4) and the outer peripheral surface of the movable rod (19), a plug-in component for connecting the rotating rod (18) and the rotating shaft (13), a pulley (22) fixedly sleeved on the other side of the outer peripheral surface of the movable rod (19), and a connecting belt (23) arranged at a middle position between the two pulleys (22), and the first bevel gear (20) and the two second bevel gears (21) are arranged in meshing connection.

4. A zero-discharge treatment device for concentrated wastewater from a power plant according to claim 2, characterized in that: The rotating component comprises a second rotating rod (34) inserted through the middle position of the stirring rod (3), a toggle plate (46) fixed to the outer peripheral surface of the second rotating rod (34), a fixed seat (32) fixed to the top end of the reaction barrel (1) and arranged in an L shape, and positioning columns (47) arranged on both sides of the toggle plate (46), the bottom of the positioning column (47) is fixed to the surface of the fixed seat (32), and the bottom of the second rotating rod (34) is fixed to the middle position of the top surface of the rotating disk (6).

5. The zero-discharge treatment device for concentrated wastewater from a power plant according to claim 3 is characterized by: The plug-in component comprises an inner groove (25) formed on one side surface of the rotating rod (18), an abutment groove (28) formed at an outer position of the reaction barrel (1) where the rotating shaft (13) extends, a first threaded rod (24) threadedly connected to a middle position of the rotating rod (18), a movable block (26) rotatably connected to one side of the first threaded rod (24), a connecting shaft (30) slidably inserted in an inner cavity at one end of a side surface of the movable block (26), a damper (31) fixed to an inner cavity at the other end of a side surface of the movable block (26), and a connecting spring (29) fixed to a side surface of the connecting shaft (30), one side of the connecting spring (29) being fixed to one of the inner cavities of the movable block (26), one side of the damper (31) being fixed to a surface of the insert block (27), and the surface of the movable block (26) being in contact with the inner cavity of the inner groove (25).

6. A zero-discharge treatment device for concentrated wastewater from a power plant according to claim 4, characterized in that: It also comprises a cleaning mechanism for cleaning the inner circumferential surface of the reaction barrel (1) and the surface of the outer shell (5), the cleaning mechanism comprising a sleeve (35) fixedly sleeved on the outer circumferential surface of the stirring rod (3) at a position in the inner cavity of the reaction barrel (1), a first brush plate (41) symmetrically arranged at two sides of the bottom of the sleeve (35), an axle seat (40) fixed to a side where the two first brush plates (41) are close to each other, a second brush plate (42) arranged at a bottom position of the stirring rod (3), a displacement component acting on the axle seat (40), and an interference component acting on the second brush plate (42).

7. A zero-discharge treatment device for concentrated wastewater from a power plant according to claim 6, characterized in that: The displacement assembly comprises a second threaded rod (36) rotatably connected to both sides of the inner cavity surface of the sleeve (35), a threaded sleeve (39) threadedly connected to the outer circumference of the second threaded rod (36) and located at the inner cavity position of the sleeve (35), a first rotating rod (33) rotatably connected to the inner cavity position of the stirring rod (3), a third bevel gear (37) fixedly sleeved on the outer circumference of the first rotating rod (33), and a fourth bevel gear (38) fixedly sleeved on the outer circumference of the second threaded rod (36) and located at the inner cavity position of the stirring rod (3), wherein the third bevel gear (37) and the fourth bevel gear (38) are fixedly sleeved on the outer circumference of the second threaded rod (36) and located at the inner cavity position of the stirring rod (3). The wheels (38) are meshingly connected, the inner cavity of the sleeve (35) is rotatably connected to the inner cavity surface of the stirring rod (3), one end of the first rotating rod (33) passes through the stirring rod (3) and extends to the outside of the stirring rod (3), the first rotating rod (33) and the second rotating rod (34) are through-connected, the inner cavity surface of the sleeve (35) is in contact with the surface of the threaded sleeve (39), the top of the shaft seat (40) is fixed to the surface of the threaded sleeve (39) at an adjacent position, and the first rotating rod (33) is rotatably connected to the fixed seat (32).

8. The zero-discharge treatment device for concentrated wastewater from a power plant according to claim 7 is characterized by: The abutment component comprises a movable plate (43) which is inserted and slidably penetrates the stirring rod (3) at the bottom position of the second brush plate (42), a second spring telescopic rod (44) which is fixed to the surface of the stirring rod (3) at the top position of the movable plate (43), and a abutment plate (45) which is arranged at one end position of the second brush plate (42), one side of the abutment plate (45) is fixed to the surface of the first brush plate (41) at an adjacent position, and one end of the first brush plate (41) is fixed to the surface of the abutment plate (45).

9. A method for treating concentrated wastewater from a power plant with zero discharge, the method using a device for treating concentrated wastewater from a power plant as claimed in claim 8, characterized in that: The following steps are involved: S1: The power plant wastewater is transported to the inner cavity of the reaction barrel (1) and a coagulant is added therein, and the motor (4) is started to rotate the stirring rod to promote a thorough mixing reaction between the wastewater and the coagulant. After a period of time, a precipitate is generated in the wastewater due to the reaction, and the motor (4) is turned off; S2: The toggle plate (46) drives the second rotating rod to rotate so that the first filter hole (7) and the second filter hole (8) are opposite to each other, and the first threaded rod (24) is rotated so that the insert block (27) is embedded in the inside of the abutment groove (28), and then the motor (4) is started again so that the insert rod (12) can be inserted back and forth between the first filter hole (7) and the second filter hole (8) to perform filtering operation; S3: After the filtration is completed, the motor (4) is turned off, the casing (16) is disassembled, the discharge pipe (2) is sealed, and a cleaning liquid is added to the inside of the discharge pipe (2), and then the first rotating rod (33) is rotated to make the first brush plate (41) fit the inner circumference of the reaction barrel (1) and the second brush plate (42) fit the surface of the outer shell (5), and then the motor (4) is started again to perform a friction cleaning operation on the inner circumference of the reaction barrel (1) and the surface of the outer shell (5); S4: After the cleaning is completed, the discharge pipe (2) is unsealed and the sleeve (16) is reinstalled, and the first threaded rod (24) is rotated to disengage the plug (27) from the inside of the abutment groove (28), and the first rotating rod (33) is rotated to separate the first brush plate (41) and the second brush plate (42) and the inner circumference of the reaction barrel (1) from the surface of the outer shell (5). Finally, the second rotating rod (34) is rotated to rotate the rotating disk (6) to put the outer shell (5) in a sealed state, waiting for the next stage of drainage to enter.

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