Thermal power plant reverse osmosis sewage and wastewater treatment device and treatment method

Abstract

The invention discloses a reverse osmosis sewage and wastewater treatment device for a thermal power plant. The device comprises an aeration structure, a stirring structure and a waste discharge structure, the aeration structures can be relatively connected in series, the stirring structure is fixedly arranged on the aeration structures, and the waste discharge structure is connected with one of the aeration structures. The invention relates to the technical field of sewage treatment, and through the innovative aeration structures, the stirring structure and the waste discharge structure, the efficiency, effect and economical efficiency of sewage treatment are remarkably improved; the device has the advantages of improving the aeration effect, enhancing sewage mixing, preventing equipment blockage, saving resources, flexibly expanding, improving the treatment efficiency and adapting to various water qualities; and sufficient distribution of dissolved oxygen is ensured, and microbial degradation treatment is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a reverse osmosis sewage and wastewater treatment device and a treatment method for a thermal power plant. Background Art

[0002] Wastewater treatment in thermal power plants usually adopts multiple steps, among which aeration treatment is particularly important. Aeration treatment can effectively degrade microorganisms, promote the contact between microorganisms and organic matter and oxygen, and prevent sludge sedimentation. However, existing aeration treatment can only perform a single oxygen flushing and mixed degradation through the aeration tank, which is inefficient, and the oxygen flushed into an aeration tank cannot be mixed with more liquids for effective treatment. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problem that the existing aeration treatment cannot fully carry out mixed degradation treatment on the sewage in the aeration tank, and to provide a reverse osmosis wastewater treatment device and a treatment method for a thermal power plant.

[0004] In order to solve the above problems, the present invention provides the following technical solutions: a reverse osmosis wastewater treatment device for a thermal power plant, comprising an aeration structure, a stirring structure and a waste discharge structure; the aeration structures can be relatively connected in series, the stirring structure is fixedly arranged on the aeration structure, and the waste discharge structure is connected to one of the aeration structures; The aeration structure is used to take in and out air to promote the mixing of large solid particles and decompose some gases, the stirring structure is used for secondary aeration to improve the aeration effect, and the waste discharge structure is used to filter solids after aeration; In order to improve the effect of solid matter treatment, multiple waste discharge structures can be connected in series between multiple series aeration structures for step-by-step solid matter discharge treatment.

[0005] Preferably, the aeration structure includes an aeration tank body, a first bracket, a blower and an aeration component; the aeration tank body is a rectangular box structure without an upper wall, and the bottom ends of the left and right side walls of the aeration tank body are symmetrically provided with first connecting ports, one end of the first bracket is fixedly arranged on the front side wall of the aeration tank body, the blower is fixedly arranged on the first bracket, the aeration component is fixedly arranged in the middle part of the aeration tank body, and the aeration component is connected to the blower through a pipeline.

[0006] Preferably, the aeration assembly includes an aeration box, a diverter box, a cover plate, a pair of hydraulic cylinders and a sealing plate; the aeration box is a rectangular box body without a front side wall, and the front ends of the left and right side walls in the aeration box are provided with lifting openings, the aeration box is fixedly inserted in the middle of the aeration tank body, the diverter box is fixedly arranged in the middle of the lower wall of the aeration box, the front side wall of the diverter box is equidistantly provided with a plurality of air outlets, the diverter box is connected to the blower through a pipeline, the cover plate is detachably buckled on the front side wall of the aeration box, and the middle part of the cover plate is equidistantly provided with first air outlets corresponding to the air outlets, one end of a pair of hydraulic cylinders are symmetrically arranged on the inner upper wall of the aeration box, the two ends of the sealing plate are movably inserted in the lifting openings, and the sealing plate is connected to the telescopic end of the hydraulic cylinder, the middle part of the sealing plate is provided with a second air outlet corresponding to the first air outlet, and the rear side wall of the sealing plate is in contact with the air outlet of the diverter box.

[0007] Preferably, the stirring structure includes a pair of slides, an electric slide rail, a movable frame, a pair of rollers, a machine base, a first motor, a first pulley and a pair of stirring components; the pair of slides are respectively buckled on the upper wall edges of the front and rear side walls of the aeration tank body, the electric slide rail is fixedly arranged on the upper wall of the aeration box, the movable frame is mountain-shaped and has three ends, one end in the middle of the movable frame is fixedly arranged on the electric slide rail, and the other two ends of the movable frame respectively correspond to the slides, a pair of rollers are respectively movably embedded on the other two ends of the movable frame, and the rollers are fitted with the slides, one end of the machine base is fixedly arranged on the left side wall in the middle of the movable frame, the first motor is fixedly arranged on the other end of the machine base and is located on the left side of the movable frame, the first pulley is a double-groove pulley, the first pulley is fixedly arranged on the driving end of the first motor, and a pair of stirring components are symmetrically arranged on the movable frame and are located between the slide and the aeration box.

[0008] Preferably, the stirring assembly includes a driving seat, a driving pipe, a driving box, a pair of stirring arms, a driving shaft, three bevel gears, a second pulley and a transmission belt; the driving seat is fixedly arranged on the lower wall of the moving frame, and a bearing is embedded in the middle of the driving seat, one end of the driving pipe is fixedly inserted in the middle of the bearing of the driving seat, the driving box is fixedly sleeved on the other end of the driving pipe and is located in the aeration tank body, one end of a pair of stirring arms respectively movably penetrates the middle of the front and rear side walls of the driving box, the other end of the stirring arm is a plate-like structure and a plurality of stirring holes are equidistantly opened in the middle, one end of the driving shaft is fixedly penetrated through the moving frame, and the other end of the driving shaft movably penetrates through the driving pipe, the other end of the driving shaft is located in the driving box, one of the bevel gears is fixedly sleeved on the other end of the driving shaft, the other two bevel gears are symmetrically sleeved on one end of the stirring arm, and the bevel gears are relatively engaged, the second pulley is fixedly sleeved on one end of the driving pipe, and the transmission belt is movably sleeved between the first pulley and the second pulley.

[0009] Preferably, the waste discharge structure includes a waste discharge tank body, a second bracket, a gear box, a second motor, a rotating shaft, a mesh roller, a support, a discharge ladder, a gantry, a liquid pump and a pair of recoil arms; a pair of second connecting ports are provided at the bottom end of the right side wall and the front side wall of the waste discharge tank body, the second connecting port on the front side wall of the waste discharge tank body is connected to the first connecting port of the aeration tank body through a pipeline, one end of the second bracket is fixedly arranged on the front side wall of the waste discharge tank body and is located above the second connecting port, the gear box is fixedly arranged on the second bracket, the second motor is fixedly arranged on the second bracket and the second motor driving end is connected to the input end of the gear box, one end of the rotating shaft movably passes through the second bracket, and one end of the rotating shaft is connected to the output end of the gear box, the mesh roller is a circular tube structure, and the middle part of its side wall is a filter screen structure, a cross-shaped roller frame is provided in the middle of the front side wall of the mesh roller, and the inner side of the mesh roller A plurality of inclined guide plates are equidistantly arranged along the wall in a clockwise direction, the mesh roller is fixedly sleeved on the other end of the rotating shaft through a roller frame, and the mesh roller is movably embedded in the waste discharge pool body, one end of the support is fixedly arranged on the rear side wall of the waste discharge pool body, one end of the discharge ladder is fixedly arranged on the other end of the support, the other end of the discharge ladder is movably inserted in the mesh roller and is located between the guide plates, the lower wall inside the discharge ladder is an inclined wall surface, the gantry is fixedly arranged on the discharge ladder and close to one end of the discharge ladder, the liquid pump is fixedly arranged on the gantry, one end of a pair of recoil arms are symmetrically arranged on opposite side walls inside the gantry, and the other end of the recoil arm is movably inserted in the mesh roller, the recoil arm is a cavity tube body, and a plurality of nozzles are arranged on the side wall of the other end of the recoil arm in the opposite direction, and the plurality of nozzles correspond to the left and right side walls inside the mesh roller, respectively, and the recoil arms are connected to the liquid outlet ends of the liquid pump through pipelines.

[0010] Preferably, in order to achieve filtering treatment of solid matter by the mesh roller, the front and rear side walls of the mesh roller fit closely with the inner wall of the waste discharge tank body.

[0011] Preferably, in order to flush the inner wall of the mesh roller, the liquid inlet end of the liquid pump is connected to a water supply pipeline, or the liquid inlet end of the liquid pump is connected to the right end of the sewage tank body and the water supply pipeline is located on the right side of the mesh roller.

[0012] A method for treating wastewater from a reverse osmosis wastewater treatment device in a thermal power plant comprises the following steps: Step 1: The wastewater is connected to the aeration structure, and a large amount of oxygen is generated through the aeration structure to enter the aeration treatment, provide oxygen, promote the biodegradation of organic matter, promote some waste gas treatment, and provide mixing and stirring; Step 2: During the aeration process, secondary aeration and agitation are provided by the stirring structure to enhance the aeration effect; Step 3: The sewage after aeration treatment enters the waste discharge structure, through which the larger solid particles are filtered and discharged.

[0013] The invention proposes a thermal power plant reverse osmosis wastewater treatment device and treatment method, which have the following beneficial effects: through the mechanical design of the aeration structure, it is convenient to set and install according to the actual size of the aeration tank poured with concrete; and the aeration structure can also prevent the sewage from flowing back into the air pipe and causing blockage when not in use; through the cooperation of the stirring structure and the aeration structure, the sewage is stirred during the aeration process, so that the sewage is prompted to flow through the stirring arm to improve the aeration effect, and the bubbles generated inside the sewage are effectively degraded and mixed. At the same time, as the stirring structure moves, internal precipitation is prevented, and a stepped aeration treatment is formed by connecting multiple aeration structures in series, which effectively improves the aeration treatment effect; and the position and number of the waste discharge structure can be set according to demand, and the aerated sewage can be filtered to treat larger particles, and solids can be received while being discharged and flushed as the mesh roller rotates to prevent filter blockage; the mesh roller flushing of the equipment can also be used with the filtered sewage, saving water resources and the effect of secondary filtration; in summary, the invention has the following advantages: 1. The aeration structure can be customized and installed according to the size of the concrete aeration tank to ensure aeration uniformity and efficiency; multiple aeration structures are connected in series to form a stepped treatment, which gradually improves the aeration effect of sewage, ensures sufficient distribution of dissolved oxygen, and promotes microbial degradation of organic matter.

[0014] 2. The stirring structure and the aeration structure work together to promote the flow of sewage through the stirring arm and improve the aeration effect; the movement of the stirring structure prevents the sedimentation of sludge and solids, keeps the sewage evenly mixed, and avoids the reduction of treatment efficiency.

[0015] 3. The aeration structure prevents sewage from flowing back into the air pipe when not in use, avoids air pipe blockage and extends the service life of the equipment; the adjustable waste discharge structure filters larger particles, and the rotation of the mesh roller realizes the reception, discharge and flushing of solids to prevent filter blockage.

[0016] 4. The aeration structure and waste discharge structure can be flexibly set and adjusted according to demand to meet the needs of sewage treatment of different scales and types. Through the synergistic effect of aeration and agitation, the organic matter in the sewage is fully degraded; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly structure of the present invention; Figure 2 This is a schematic diagram of the split structure of the aeration structure; Figure 3 for Figure 2 Schematic diagram of the assembly structure; Figure 4 Schematic diagram of the split structure of the stirring structure; Figure 5 for Figure 4Schematic diagram of the assembly structure; Figure 6 This is a schematic diagram of the waste discharge structure splitting structure; Figure 7 for Figure 6 Schematic diagram of the assembly structure; Figure 8 It is a schematic diagram of the planed structure of the stirring component; Fig. 9 This is a schematic diagram of the local enlarged structure at point A.

[0018] In the figure: 1, aeration structure, 11, aeration tank body, 12, first bracket, 13, blower, 14, aeration assembly, 141, aeration box, 142, diverter box, 143, cover plate, 144, hydraulic cylinder, 145, sealing plate, 2, stirring structure, 21, slideway, 22, electric slide rail, 23, mobile frame, 24, roller, 25, machine base, 26, first motor, 27, first pulley, 28, stirring assembly, 281, drive seat, 282, drive pipe, 283, drive box, 284, stirring arm, 285, Drive shaft, 286, bevel gear, 287, second pulley, 288, transmission belt, 3, waste discharge structure, 31, waste discharge pool body, 32, second bracket, 33, gear box, 34, second motor, 35, rotating shaft, 36, mesh roller, 37, support, 38, discharge ladder, 39, gantry, 40, liquid pump, 41, recoil arm, 5, first connecting port, 6, second connecting port, 71, air outlet, 72, first air outlet, 72, second air outlet, 81, guide plate, 82, roller frame, 91, stirring hole, 92, nozzle. DETAILED DESCRIPTION

[0019] The specific implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1-Figure 9 As shown, the present invention provides a technical solution: a reverse osmosis wastewater treatment device for a thermal power plant, comprising an aeration structure 1, a stirring structure 2 and a waste discharge structure 3; the aeration structures 1 can be relatively connected in series, the stirring structure 2 is fixedly arranged on the aeration structure 1, and the waste discharge structure 3 is connected to one of the aeration structures 1; the aeration structure 1 is used for taking in and out air to promote the mixing of large solid particles and decomposing part of the gas, the stirring structure 2 is used for secondary aeration to improve the aeration effect, and the waste discharge structure 3 is used to filter solids after aeration; in order to improve the effect of treating solids, multiple waste discharge structures 3 can be connected in series between multiple series-connected aeration structures 1 for step-by-step solid discharge treatment.

[0021] As a further solution of the present invention, the aeration structure 1 includes an aeration tank body 11, a first bracket 12, a blower 13 and an aeration component 14; the aeration tank body 11 is a rectangular box structure without an upper wall, and the bottom ends of the left and right side walls of the aeration tank body 11 are symmetrically provided with first connecting ports 5, one end of the first bracket 12 is fixedly arranged on the front side wall of the aeration tank body 11, the blower 13 is fixedly arranged on the first bracket 12, the aeration component 14 is fixedly arranged in the middle of the aeration tank body 11, and the aeration component 14 is connected to the blower 13 through a pipeline; the blower 13 is carried by the first bracket 12, oxygen is provided to the aeration component 14 by the blower 13, sewage is carried by the aeration tank body 11, and the aeration component 14 divides the aeration tank body 11 into two spaces.

[0022] As a further solution of the present invention, the aeration assembly 14 includes an aeration box 141, a diverter box 142, a cover plate 143, a pair of hydraulic cylinders 144 and a sealing plate 145; the aeration box 141 is a rectangular box body without a front side wall, and the front ends of the left and right side walls of the aeration box 141 are provided with lifting ports, the aeration box 141 is fixedly inserted in the middle of the aeration tank body 11, the diverter box 142 is fixedly arranged in the middle of the lower wall of the aeration box 141, and the front side wall of the diverter box 142 is equidistantly provided with a plurality of air outlets 71, the diverter box 142 is connected to the blower 13 through a pipeline, the cover plate 143 is detachably buckled on the front side wall of the aeration box 141, and the middle part of the cover plate 143 is equidistantly provided with first air outlet holes 72 corresponding to the air outlets 71, and a pair of hydraulic cylinders 144 are provided with a pair of hydraulic cylinders 145. One end of the pressure cylinder 144 is symmetrically arranged on the inner upper wall of the aeration box 141, and the two ends of the sealing plate 145 are movably inserted in the lifting port, and the sealing plate 145 is connected to the telescopic end of the hydraulic cylinder 144. A second air outlet 72 corresponding to the first air outlet 72 is opened in the middle of the sealing plate 145, and the rear side wall of the sealing plate 145 is in contact with the air outlet 71 of the diversion box 142; the diversion box 142 is carried by the aeration box 141 and the cover plate 143, and the diversion box 142 is used to divert multiple air outlets 71 for oxygen supply, and the sealing plate 145 is driven to move up and down by the hydraulic cylinder 144, so that the second air outlet 72 is displaced relative to the first air outlet 72 and the air outlet 71, so as to be blocked and sealed to prevent sewage from flowing back when not in use.

[0023] As a further solution of the present invention, the stirring structure 2 includes a pair of slideways 21, an electric slide rail 22, a mobile frame 23, a pair of rollers 24, a machine base 25, a first motor 26, a first pulley 27 and a pair of stirring components 28; the pair of slideways 21 are respectively buckled on the upper wall edges of the front and rear side walls of the aeration tank body 11, the electric slide rail 22 is fixedly arranged on the upper wall of the aeration box 141, the mobile frame 23 is mountain-shaped, and has three ends, one end in the middle of the mobile frame 23 is fixedly arranged on the electric slide rail 22, and the other two ends of the mobile frame 23 correspond to the slideways 21 respectively, and a pair of rollers 24 are respectively movably embedded on the other two ends of the mobile frame 23. The roller 24 fits with the slide 21, one end of the base 25 is fixedly arranged on the left side wall in the middle of the moving frame 23, the first motor 26 is fixedly arranged on the other end of the base 25 and is located on the left side of the moving frame 23, the first pulley 27 is a double-groove pulley, and the first pulley 27 is fixedly arranged on the driving end of the first motor 26, and a pair of stirring assemblies 28 are symmetrically arranged on the moving frame 23 and are located between the slide 21 and the aeration box 141; the moving frame 23 is driven by the electric slide rail 22 to move on the slide 21 with the help of the roller 24 to adjust the position on the aeration tank body 11, thereby driving the stirring assembly 28 to perform mobile all-round stirring to prevent sedimentation.

[0024] As a further solution of the present invention, the stirring assembly 28 includes a driving seat 281, a driving tube 282, a driving box 283, a pair of stirring arms 284, a driving shaft 285, three bevel gears 286, a second pulley 287 and a transmission belt 288; the driving seat 281 is fixedly arranged on the lower wall of the mobile frame 23, and a bearing is embedded in the middle of the driving seat 281, one end of the driving tube 282 is fixedly inserted in the middle of the bearing of the driving seat 281, and the driving box 283 is fixedly sleeved on the driving seat 281. The other end of the tube 282 is located in the aeration tank body 11, one end of a pair of stirring arms 284 is respectively movably penetrated through the middle of the front and rear side walls of the driving box 283, the other end of the stirring arm 284 is a plate-like structure and a plurality of stirring holes 91 are equidistantly opened in the middle, one end of the driving shaft 285 is fixedly penetrated through the moving frame 23, and the other end of the driving shaft 285 is movably penetrated through the driving tube 282, and the other end of the driving shaft 285 is located in the driving box 283, and one of the bevel gears 286 is fixedly sleeved on the driving shaft On the other end of 285, the other two bevel gears 286 are symmetrically mounted on one end of the stirring arm 284, and the bevel gears 286 are relatively engaged, the second pulley 287 is fixedly mounted on one end of the driving tube 282, and the transmission belt 288 is movably mounted between the first pulley 27 and the second pulley 287; the first motor 26 on the machine base 25 drives the first pulley 27 to rotate, and the transmission belt 288 is connected with the first pulley 27 and the second pulley 287 to drive the driving tube 282 to rotate on the driving base 281. The rotation of the driving tube 282 drives the driving box 283 to rotate as well. As the driving box 283 rotates, the driving arm moves in a circle by engaging with the bevel gear 286 on the driving shaft 285 with the help of the bevel gear 286, and the driving arm is turned over by the engagement, so that the stirring hole 91 on the driving arm drives the liquid to flow in different directions and generate bubbles as it rotates and at different angles to promote aeration effect and prevent precipitation.

[0025] As a further solution of the present invention, the waste discharge structure 3 includes a waste discharge tank body 31, a second bracket 32, a gear box 33, a second motor 34, a rotating shaft 35, a mesh roller 36, a support 37, a discharge ladder 38, a gantry 39, a liquid pump 40 and a pair of recoil arms 41; a pair of second connecting ports 6 are provided at the bottom end of the right side wall and the front side wall of the waste discharge tank body 31, the second connecting port 6 of the front side wall of the waste discharge tank body 31 is connected to the first connecting port 5 of the aeration tank body 11 through a pipeline, one end of the second bracket 32 ​​is fixedly arranged on the front side wall of the waste discharge tank body 31, and is located above the second connecting port 6, the gear box 33 is fixedly arranged on the second bracket 32, the second motor 34 is fixedly arranged on the second bracket 32 ​​and the second The driving end of the motor 34 is connected to the input end of the gear box 33, one end of the rotating shaft 35 movably passes through the second bracket 32, and one end of the rotating shaft 35 is connected to the output end of the gear box 33, the mesh roller 36 is a round tube structure, and the middle part of its side wall is a filter structure, a cross-shaped roller frame 82 is arranged in the middle of the front side wall of the mesh roller 36, and a plurality of inclined guide plates 81 are arranged equidistantly along the clockwise direction on the inner side wall of the mesh roller 36, the mesh roller 36 is fixedly sleeved on the other end of the rotating shaft 35 through the roller frame 82, and the mesh roller 36 is movably embedded in the waste discharge tank body 31, one end of the support 37 is fixedly arranged on the rear side wall of the waste discharge tank body 31, one end of the discharge ladder 38 is fixedly arranged on the other end of the support 37, and the other end of the discharge ladder 38 is movably inserted in the mesh roller 36 , and is located between the guide plates 81, the lower wall of the discharge ladder 38 is an inclined wall surface, the gantry 39 is fixedly arranged on the discharge ladder 38 and close to one end of the discharge ladder 38, the liquid pump 40 is fixedly arranged on the gantry 39, one end of a pair of recoil arms 41 are symmetrically arranged on opposite side walls of the gantry 39, and the other end of the recoil arm 41 is movably inserted in the net roller 36, the recoil arm 41 is a cavity tube body, and the other end of the side wall of the recoil arm 41 is reversely arranged with a plurality of nozzles 92, and the plurality of nozzles 92 correspond to the left and right side walls of the net roller 36 respectively, and the recoil arm 41 is connected to the liquid outlet end of the liquid pump 40 through a pipeline; through the drive of the second motor 34, with the help of the linkage of the gear box 33, the driving net roller 36 is prevented from hitting the second motor 34 Directly causing load and damage and changing the output speed; by driving the mesh roller 36 to rotate, the solids are carried between the guide plate 81 and the inner wall of the mesh roller 36 with the help of the inclined guide plate 81. When the guide plate 81 flips over to the highest position of the upper wall of the mesh roller 36, the guide plate 81 is inverted, and then the solids slide onto the discharge ladder 38 and are discharged for treatment with the help of the inclined discharge ladder; at the same time, the liquid pump 40 can extract liquid to supply the recoil arm 41, and the recoil arm 41 is diverted to multiple nozzles 92 to wash the guide plate 81 and the side wall of the mesh roller 36 after the solids fall to prevent blockage; and the sewage after filtering the solids passes through the mesh roller 36 located at the right end of the waste discharge tank body 31 and can be discharged through the second connecting port 6.

[0026] As a further solution of the present invention, in order to flush the inner wall of the mesh roller 36, the liquid inlet end of the liquid pump 40 is connected to a water supply pipe, or the liquid inlet end of the liquid pump 40 is connected to the right end of the sewage tank body and the water supply pipe is located on the right side of the mesh roller 36, so as to save waste of water resources, set the water supply method according to the actual sewage situation, and relatively improve the practicality of the equipment.

[0027] Working principle: Explained as follows Step 1, first connect the first connection port 5 on the left side wall of the aeration tank body 11 in the aeration structure 1 to the sewage pipe; according to actual needs, the aeration structures 1 can be relatively connected in series, and multiple waste discharge structures 3 can be set according to needs, and the waste discharge structure 3 can be set at the end of the aeration structure 1 or between the aeration structures 1; Step 2: After the sewage enters the aeration tank body 11, the aeration assembly 14 divides the aeration tank body 11 into two equal-sized spaces to separate the sewage. Then, the blower 13 on the first support group provides oxygen to the diversion box 142, and blows it out from the air outlet 71, passes through the second air outlet 72 of the sealing plate 145 and the first air outlet 72 of the cover plate 143, and enters the bottom of the aeration tank body 11 to provide oxygen for aeration treatment. Step 3, drive the electric slide rail 22 in the stirring structure 2, drive the moving frame 23 to move left and right on the slideway 21 with the help of the roller 24, and adjust the stirring components 28 located on both sides of the aeration box 141 to perform left and right reciprocating stirring processing; that is, the stirring component 28 drives the first pulley 27 through the first motor 26 on the machine base 25, and the transmission belt 288 is connected to the first pulley 27 and the second pulley 287, so as to drive the corresponding driving pipe 282 to rotate on the driving base 281; The rotation of the driving tube 282 will drive the driving box 283 to rotate. Since the driving shaft 285 is fixed, the driving box 283 drives the driving arm to rotate in a circle during the rotation. The driving arm is engaged with the bevel gear 286 on the driving shaft 285 by means of the bevel gear 286. As the driving arm rotates, it is driven by the bevel gear 286 to flip. As the driving arm rotates and stirs with the driving box 283, the driving arm also adjusts the tilt direction of the stirring hole 91, promotes the water flow to flow in different directions through the stirring hole 91 in the reverse direction and generates bubbles, thereby improving the aeration effect and preventing internal precipitation. Step 4, when the aeration assembly 14 is not in use, the hydraulic cylinder 144 is driven to retract and the sealing plate 145 is driven to rise and move under the limiting action of the aeration box 141 and the cover plate 143, so that the corresponding connection between the air outlet 71 and the first air outlet 72 is staggered and closed, that is, the air outlet 71 of the diversion box 142 is closed to prevent the sewage from flowing back due to the lack of air blowing from the blower 13; Step 5, after the sewage is aerated, it enters the waste discharge structure 3 through the first connection port 5 and the second connection port 6 to treat the solid matter; that is, the sewage enters from the second connection port 6 on the front side wall of the waste discharge tank body 31 and is located in the mesh roller 36 that fits with the inner wall of the waste discharge tank body 31; Step 6: The second motor 34 on the second bracket 32 ​​is driven to rotate the rotating shaft 35 by means of the transmission belt 288 of the gear box 33. Since the net roller 36 is arranged on the rotating shaft 35 through the roller frame 82, the net roller 36 is driven to rotate in the waste discharge tank body 31. As the rotation drives the inclined guide plate 81 to rotate, the solid matter is retained between the guide plate 81 and the inner wall of the net roller 36, and the water passes through the net roller 36 and is discharged; Step 7, when the solid objects are driven to rotate until the upper wall of the mesh roller 36 is at its highest, the guide plate 81 is turned upside down, and the solid objects fall into the discharge ladder 38 on the support 37, and slide out through the inclined discharge ladder 38; at the same time, the liquid pump 40 on the gantry 39 is driven, and the liquid pump 40 is connected to the water supply according to demand, and the water is supplied to the recoil arm 41 and sprayed to the inner wall of the mesh roller 36 through multiple nozzles 92 to prevent the inner wall of the mesh roller 36 from being clogged by solid objects; Step 8: Since the recoil arms 41 are symmetrically arranged and the mesh can drive the solid matter to be filtered by either forward or reverse rotation, the use of the recoil arms 41 is regulated according to the rotation direction of the mesh roller 36 and only one of them can be used.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reverse osmosis wastewater treatment device for a thermal power plant, characterized in that: It comprises an aeration structure (1), a stirring structure (2) and a waste discharge structure (3); the aeration structures (1) can be connected in series with each other, the stirring structure (2) is fixedly arranged on the aeration structure (1), and the waste discharge structure (3) is connected to one of the aeration structures (1); The aeration structure (1) is used to introduce and extract air to promote the mixing of large solid particles and decompose part of the gas, the stirring structure (2) is used for secondary aeration to improve the aeration effect, and the waste discharge structure (3) is used to filter solid matter after aeration; In order to improve the effect of treating solids, a plurality of waste discharge structures (3) can be connected in series between a plurality of series-connected aeration structures (1) for step-by-step solids discharge treatment.

2. A thermal power plant reverse osmosis wastewater treatment device according to claim 1, characterized in that: The aeration structure (1) comprises an aeration tank body (11), a first bracket (12), a blower (13) and an aeration assembly (14); The aeration tank body (11) is a rectangular box structure without an upper wall, and first connection ports (5) are symmetrically arranged at the bottom ends of the left and right side walls of the aeration tank body (11), one end of the first bracket (12) is fixedly arranged on the front side wall of the aeration tank body (11), the blower (13) is fixedly arranged on the first bracket (12), the aeration component (14) is fixedly arranged in the middle of the aeration tank body (11), and the aeration component (14) is connected to the blower (13) through a pipeline.

3. A thermal power plant reverse osmosis wastewater treatment device according to claim 2, characterized in that: The aeration assembly (14) comprises an aeration box (141), a diversion box (142), a cover plate (143), a pair of hydraulic cylinders (144) and a sealing plate (145); The aeration box (141) is a rectangular box body without a front side wall, and the front ends of the left and right side walls of the aeration box (141) are both provided with lifting openings. The aeration box (141) is fixedly inserted in the middle of the aeration tank body (11), and the diverter box (142) is fixedly arranged in the middle of the lower wall of the aeration box (141). The front side wall of the diverter box (142) is equidistantly provided with a plurality of air outlets (71). The diverter box (142) is connected to the blower (13) through a pipeline, and the cover plate (143) is detachably buckled on the front side wall of the aeration box (141), and the cover plate A first air outlet (72) corresponding to the air outlet (71) is equidistantly provided in the middle of the aeration box (143); one end of a pair of hydraulic cylinders (144) is symmetrically arranged on the inner upper wall of the aeration box (141); both ends of the sealing plate (145) are movably inserted into the lifting port, and the sealing plate (145) is connected to the telescopic end of the hydraulic cylinder (144); a second air outlet (72) corresponding to the first air outlet (72) is provided in the middle of the sealing plate (145), and the rear side wall of the sealing plate (145) is in contact with the air outlet (71) of the diverter box (142).

4. A thermal power plant reverse osmosis wastewater treatment device according to claim 3, characterized in that: The stirring structure (2) comprises a pair of slideways (21), an electric slide rail (22), a moving frame (23), a pair of rollers (24), a machine base (25), a first motor (26), a first pulley (27) and a pair of stirring components (28); A pair of slideways (21) are respectively buckled on the upper wall edges of the front and rear side walls of the aeration tank body (11); the electric slide rail (22) is fixedly arranged on the upper wall of the aeration box (141); the movable frame (23) is in a mountain shape and has three ends; one end in the middle of the movable frame (23) is fixedly arranged on the electric slide rail (22), and the other two ends of the movable frame (23) correspond to the slideways (21); a pair of rollers (24) are respectively movably embedded on the other two ends of the movable frame (23), and the rollers (24) are respectively movably embedded on the other two ends of the movable frame (23). ) is fitted with the slideway (21), one end of the machine base (25) is fixedly arranged on the left side wall of the middle part of the moving frame (23), the first motor (26) is fixedly arranged on the other end of the machine base (25) and is located on the left side of the moving frame (23), the first pulley (27) is a double-groove pulley, and the first pulley (27) is fixedly arranged on the driving end of the first motor (26), and a pair of stirring assemblies (28) are symmetrically arranged on the moving frame (23) and are located between the slideway (21) and the aeration box (141).

5. A thermal power plant reverse osmosis wastewater treatment device according to claim 4, characterized in that: The stirring assembly (28) comprises a driving seat (281), a driving pipe (282), a driving box (283), a pair of stirring arms (284), a driving shaft (285), three bevel gears (286), a second pulley (287) and a transmission belt (288); The driving seat (281) is fixedly arranged on the lower wall of the moving frame (23), and a bearing is embedded in the middle of the driving seat (281). One end of the driving tube (282) is fixedly inserted in the middle of the bearing of the driving seat (281). The driving box (283) is fixedly sleeved on the other end of the driving tube (282) and is located in the aeration tank body (11). One end of a pair of stirring arms (284) respectively movably penetrates the middle of the front and rear side walls of the driving box (283). The other end of the stirring arm (284) is a plate-shaped structure and a plurality of stirring holes (91) are equidistantly opened in the middle. One end of the driving shaft (285) is fixedly penetrated through the moving frame (23). The frame (23) is provided with a drive shaft (285), and the other end of the drive shaft (285) is movably inserted into the drive tube (282). The other end of the drive shaft (285) is located in the drive box (283). One of the bevel gears (286) is fixedly mounted on the other end of the drive shaft (285). The other two bevel gears (286) are symmetrically mounted on one end of the stirring arm (284), and the bevel gears (286) are relatively engaged. The second pulley (287) is fixedly mounted on one end of the drive tube (282), and the transmission belt (288) is movably mounted between the first pulley (27) and the second pulley (287).

6. A thermal power plant reverse osmosis wastewater treatment device according to claim 5, characterized in that: The waste discharge structure (3) comprises a waste discharge tank body (31), a second bracket (32), a gear box (33), a second motor (34), a rotating shaft (35), a net roller (36), a support (37), a discharge ladder (38), a gantry (39), a liquid pump (40) and a pair of recoil arms (41); A pair of second connection ports (6) are provided at the bottom end of the right side wall and the front side wall of the waste discharge tank body (31); the second connection port (6) of the front side wall of the waste discharge tank body (31) is connected to the first connection port (5) of the aeration tank body (11) through a pipeline; one end of the second bracket (32) is fixedly arranged on the front side wall of the waste discharge tank body (31) and is located above the second connection port (6); the gear box (33) is fixedly arranged on the second bracket (32); the second motor (34) is fixedly arranged on the second bracket (32) and the second motor (34) is fixedly arranged on the second bracket (32). The driving end of the second motor (34) is connected to the input end of the gear box (33); one end of the rotating shaft (35) movably passes through the second bracket (32); and one end of the rotating shaft (35) is connected to the output end of the gear box (33); the mesh roller (36) is a round tube structure, and the middle part of its side wall is a filter structure; a cross-shaped roller frame (82) is arranged in the middle part of the front side wall of the mesh roller (36); and a plurality of inclined guide plates (81) are arranged equidistantly in a clockwise direction on the inner side wall of the mesh roller (36); the mesh roller (36) is fixedly sleeved on the rotating shaft through the roller frame (82). The mesh roller (36) is movably mounted in the waste discharge tank body (31), one end of the support (37) is fixedly mounted on the rear side wall of the waste discharge tank body (31), one end of the discharge ladder (38) is fixedly mounted on the other end of the support (37), the other end of the discharge ladder (38) is movably inserted in the mesh roller (36) and is located between the guide plates (81), the lower wall of the discharge ladder (38) is an inclined wall surface, and the gantry (39) is fixedly mounted on the discharge ladder (38) and close to one end of the discharge ladder (38). The liquid pump (40) is fixedly arranged on the gantry (39), one end of a pair of recoil arms (41) are symmetrically arranged on opposite side walls inside the gantry (39), and the other end of the recoil arm (41) is movably inserted into the mesh roller (36), the recoil arm (41) is a hollow tube body, and a plurality of nozzles (92) are arranged on the opposite side walls of the other end of the recoil arm (41), and the plurality of nozzles (92) respectively correspond to the left and right side walls inside the mesh roller (36), and the recoil arms (41) are respectively connected to the liquid outlet end of the liquid pump (40) through pipelines.

7. A thermal power plant reverse osmosis wastewater treatment device according to claim 6, characterized in that: In order to flush the inner wall of the mesh roller (36), the liquid inlet end of the liquid pump (40) is connected to a water supply pipeline, or the liquid inlet end of the liquid pump (40) is connected to the right end of the sewage tank body and the water supply pipeline is located on the right side of the mesh roller (36).

8. A method for treating reverse osmosis wastewater from a thermal power plant, which is applied to a device for treating reverse osmosis wastewater from a thermal power plant as claimed in claim 7, characterized in that: The following steps are involved: Step 1: The wastewater is connected to the aeration structure (1), and a large amount of oxygen is generated by the aeration structure (1) to enter the aeration treatment, provide oxygen, promote the biodegradation of organic matter, promote some waste gas treatment, and provide mixing and stirring functions; Step 2: During the aeration process, the stirring structure (2) is used to perform secondary aeration and provide stirring to enhance the aeration effect; Step 3: The sewage after aeration treatment enters the waste discharge structure (3), and is filtered through the waste discharge structure (3) to remove larger solid particles, which are then filtered and discharged.

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