Wastewater treatment device for coal-to-methanol

Abstract

The utility model discloses a wastewater treatment device for coal-to-methanol, and belongs to the technical field of coal-to-methanol. The wastewater treatment device for coal-to-methanol comprises a first treatment assembly, a second treatment assembly and an aeration assembly, the second treatment assembly is arranged outside the first treatment assembly, the aeration assembly is arranged inside the second treatment assembly, the first treatment assembly is used for pre-treating and filtering wastewater, and the second treatment assembly is used for adding chemicals to the wastewater. The aeration assembly is used for aerating wastewater, the second treatment assembly comprises a second treatment box, the aeration assembly comprises a pair of aeration discs, the pair of aeration discs are mounted at the inner bottom end of the second treatment box, the air inlet ends of the pair of aeration discs penetrate through the second treatment box, extend to the outside and are connected with communicating pipes, and an air pump is mounted on one side of the outer wall of the second treatment box. The air outlet end of the air pump communicates with a hose, the end, away from the air pump, of the hose is connected with one end of a communicating pipe, and the hose and the communicating pipe communicate with the aeration disc.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal methanol technology field, concretely is a wastewater treatment device for coal methanol. BACKGROUND

[0002] Coal methanol, the technology of producing methanol with coal as raw material, the basic process has coal gasification, water coal gas shift, synthesis gas purification, methanol synthesis, methanol rectification several stages, and methanol rectification has traditional two tower flow and three tower flow. A large amount of wastewater is produced in the process of coal methanol, and therefore the coal methanol wastewater needs to be treated before being discharged, and is mostly treated by adding flocculants, microbial agents, catalysts and other water treatment reagents.

[0003] A coal methanol wastewater treatment device is disclosed in Chinese patent with publication number CN218146000U, which includes a mixing assembly including a motor, a cross limiting block, a flow guide pipe, three U-shaped pipes, a rotating column, a water pump, a flow guide hole, a connecting pipe, a flow guide groove and a cross groove; the lower surface of the cross limiting block is fixedly connected to the output shaft of the motor. The utility model inputs the reagent into the connecting pipe through the water pump, then inputs the reagent into the flow guide groove through the connecting pipe, the reagent in the flow guide groove flows into the U-shaped pipes and the flow guide pipe in turn, and then flows into the box through the flow guide hole, the motor drives the cross limiting block to rotate, the cross limiting block drives the rotating column to rotate, the rotating column drives the U-shaped pipes and the flow guide pipe to rotate, and then the coal methanol wastewater in the box can be stirred through the U-shaped pipes and the flow guide pipe, so that the reagent and the coal methanol wastewater can be quickly mixed, and the efficiency of coal methanol wastewater treatment is improved.

[0004] The technical scheme recorded in the scheme is inconvenient for aeration treatment of coal methanol wastewater in actual use process, because the coal methanol wastewater contains methanol, ethanol, higher alcohols, aldehydes, ketones, organic acids and other organic matters, and the chemical oxygen demand is high, and part of the nitrogen compounds in the coal are converted into ammonia nitrogen in the conversion process and enter the wastewater, the ammonia nitrogen content in the wastewater is high, the biochemical oxygen demand in the water is high, lack of aeration will lead to insufficient dissolved oxygen in the water, and the metabolic activity of microorganisms is inhibited, affecting the decomposition and conversion capacity of microorganisms to organic matter and ammonia nitrogen, and then reducing the wastewater treatment effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a wastewater treatment device for coal methanol to solve the problems in the above background technology.

[0006] In view of the above problems, the technical scheme provided by the utility model is:

[0007] The utility model provides a kind of wastewater treatment device for coal methanol, including first processing component, second processing component and aeration component, the second processing component is arranged in the outside of first processing component, the aeration component is arranged in the inside of second processing component, the first processing component is used to prefilter wastewater, the second processing component is used to dope wastewater, the aeration component is used to aeration wastewater, the second processing component includes second processing box, the aeration component includes a pair of aeration disc, a pair of the aeration disc is installed in the inside bottom end of second processing box, the air inlet end of a pair of the aeration disc is extended to outside and is connected with communicating pipe, air pump is installed on the outer wall of second processing box, the air outlet end of air pump is communicated with hose, the hose is connected with the one end of communicating pipe away from air pump, the hose, communicating pipe and aeration disc are communicated.

[0008] Further, the first processing component includes a first processing box, the first processing box is installed on the side of the outer wall of the second processing box opposite to the air pump, a first circular hole is formed in the top surface of the first processing component, a placement ring is arranged on the top surface of the first processing component at the first circular hole, a filter cartridge is connected to the bottom end of the placement ring, the outer wall of the filter cartridge is in clearance fit with the inner wall of the first circular hole, a first liquid inlet disc is arranged in the placement ring, and the inside of the first liquid inlet disc is funnel-shaped.

[0009] The beneficial effects of the above further scheme are that, through the cooperation of the first liquid inlet disc, the placement ring and the filter cartridge, the first liquid inlet disc is funnel-shaped, which can make the wastewater flow more smoothly into the filter cartridge and pre-filter the large-particle solid impurities in the wastewater.

[0010] Further, the two sides of the outside of the first liquid inlet disc are connected with supports, the bottom surfaces of the two supports are attached to the top surface of the first processing box, and the supports and the first processing box are connected by bolts.

[0011] The beneficial effects of the above further scheme are that, through the cooperation of the supports and the bolts, the supports and the first processing box are connected by bolts, which provides stable support for the first liquid inlet disc, avoids the first liquid inlet disc from shaking or shifting when the wastewater is poured, and affects the inflow of the wastewater, the bolts are removed, the supports and the first liquid inlet disc are separated from the first processing box, and then the placement ring is pulled upward, so that the placement ring and the filter cartridge are taken out from the first processing box as a whole, and the filter cartridge is cleaned.

[0012] Further, the first processing box is provided with an installation groove in the inside of the side close to the second processing box, and a pump is installed in the installation groove, the liquid inlet end of the pump is communicated with a conveying pipe, and the liquid outlet end of the pump is located in the inside of the second processing box.

[0013] The beneficial effect of the further scheme is that when the pump is started, the pre-processed and filtered wastewater in the first treatment box can be pumped into the second treatment box, realizing the delivery of wastewater from the first treatment assembly to the second treatment assembly.

[0014] Further, the back of the second treatment box is communicated with a liquid discharge pipe, one end of the liquid discharge pipe is provided with an electromagnetic valve, the top surface of the second treatment box is provided with a second circular hole, the inside of the second circular hole is rotatably connected with a second liquid inlet disc, the outer wall of the second liquid inlet disc inside the second treatment box is provided with a plurality of liquid discharge holes, the inside top end of the second liquid inlet disc is provided with a pressure pump, and the liquid inlet end of the pressure pump extends to the outside through the second liquid inlet disc.

[0015] The beneficial effect of the further scheme is that the second liquid inlet disc can rotate inside the second circular hole, and the liquid distribution in the second treatment box can be more uniform through the cooperation of the liquid discharge holes, improving the uniformity of the liquid addition, the liquid inlet end of the pressure pump is connected with the container storing the liquid through the pipeline, the pressure of the liquid inlet can be increased when the pressure pump is started, the liquid can be quickly delivered to the second treatment box, and the efficiency of the liquid addition is improved, and the wastewater treated by the second treatment box can be discharged through the liquid discharge pipe when the electromagnetic valve is opened.

[0016] Further, the second liquid inlet disc is provided with a tooth ring outside the end away from the inside of the second treatment box, the upper end of the second treatment box is provided with a mounting bracket, the inside of the mounting bracket is rotatably connected with a rotating shaft, the outside of the rotating shaft is provided with a gear, the gear and the tooth ring are engaged with each other, the top surface of the mounting bracket is provided with a servo motor, and the output end of the servo motor is fixedly connected with the rotating shaft.

[0017] The beneficial effect of the further scheme is that when the servo motor is started to drive the rotating shaft to rotate and drive the gear to rotate, the second liquid inlet disc rotates inside the second circular hole under the meshing action of the gear and the tooth ring.

[0018] Further, the bottom end of the second liquid inlet disc is connected with a stirring rod, the outside of the stirring rod is provided with stirring blades on both sides, and the bottom end of the stirring rod is away from the top end of the aeration disc.

[0019] The beneficial effect of the further scheme is that when the second liquid inlet disc rotates, the stirring rod and the stirring blade rotate, the wastewater in the second treatment box is stirred, the medicament is fully mixed with the wastewater, the chemical reaction is accelerated, and the wastewater treatment effect is improved.

[0020] Compared with the prior art, the beneficial effect of the coal-methanol wastewater treatment device is that the coal-methanol wastewater contains methanol, ethanol, higher alcohol, aldehyde, ketone, organic acid and various organic matters, and the chemical oxygen demand is high; meanwhile, part of the nitrogen compounds in the coal generates ammonia nitrogen in the conversion process and enters the wastewater, so that the ammonia nitrogen content in the wastewater is high, the biochemical oxygen demand in the water is high, a pair of aeration discs are installed at the bottom end inside the second treatment box, air can be more uniformly distributed at the bottom of the wastewater, and then uniform aeration effect is generated, sufficient and uniform oxygen is provided for the growth and metabolism of microorganisms in the wastewater, and the wastewater treatment effect is improved; the gas pump is arranged, compressed air is provided for the aeration disc when the gas pump is started, the wastewater contains a large amount of biodegradable organic matters, aeration can provide sufficient oxygen for aerobic microorganisms, so that the organic matters are decomposed into carbon dioxide and water in an aerobic environment, and thus the organic matters in the wastewater are removed, and the chemical oxygen demand and the biochemical oxygen demand are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A three-dimensional structure schematic view of the coal-methanol wastewater treatment device is provided in the utility model.

[0022] Figure 2 An explosion three-dimensional structure schematic view of the second treatment assembly and the aeration assembly of the coal-methanol wastewater treatment device is provided in the utility model.

[0023] Figure 3 A front cross-sectional structure schematic view of the second liquid inlet disc of the coal-methanol wastewater treatment device is provided in the utility model.

[0024] Figure 4 An explosion three-dimensional structure schematic view of the first liquid inlet disc and the placing ring of the coal-methanol wastewater treatment device is provided in the utility model.

[0025] Figure 5 A front cross-sectional structure schematic view of the first treatment box and the second treatment box of the coal-methanol wastewater treatment device is provided in the utility model.

[0026] In the figure: 1, first processing assembly; 11, first processing box; 12, placing ring; 13, filter cartridge; 14, support; 15, first liquid inlet disc; 16, pump machine; 2, second processing assembly; 21, second processing box; 22, second liquid inlet disc; 23, liquid outlet hole; 24, pressure pump; 25, stirring rod; 26, stirring blade; 27, tooth ring; 28, mounting frame; 29, gear; 210, servo motor; 3, aeration assembly; 31, aeration disc; 32, communication pipe; 33, hose; 34, air pump. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of wastewater treatment device for coal methanol, including first processing assembly 1, second processing assembly 2 and aeration assembly 3, second processing assembly 2 is arranged in the outside of first processing assembly 1, aeration assembly 3 is arranged in the inside of second processing assembly 2, first processing assembly 1 is used to prefilter to wastewater, second processing assembly 2 is used to add medicine to wastewater, aeration assembly 3 is used to aeration to wastewater, second processing assembly 2 includes second processing box 21, aeration assembly 3 includes a pair of aeration disc 31, a pair of aeration disc 31 is installed in the inside bottom end of second processing box 21, the air inlet end of a pair of aeration disc 31 is all extended to outside and is connected with communication pipe 32, passing through second processing box 21, air pump 34 is installed on the outer wall side of second processing box 21, the air outlet end of air pump 34 is communicated with hose 33, hose 33 is connected with the one end of communication pipe 32 away from air pump 34, hose 33, communication pipe 32 and aeration disc 31 are communicated, by a pair of aeration disc 31 installation in the inside bottom end of second processing box 21, air can be more evenly distributed in wastewater bottom, to generate uniform aeration effect, provide sufficient and uniform oxygen for the growth and metabolism of microorganism in wastewater, help to improve wastewater treatment effect, by setting air pump 34, when starting air pump 34, provide compressed air for aeration disc 31, wastewater contains a large amount of biodegradable organic matter, aeration can provide sufficient oxygen for aerobic microorganism, so that it decomposes organic matter into carbon dioxide and water in aerobic environment, to remove organic matter in wastewater, reduce chemical oxygen demand and biochemical oxygen demand.

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the present application. Figures 1-5 The utility model provides a technical scheme: first processing component 1 includes first processing box 11, first processing box 11 is installed on the opposite side of the outer wall of second processing box 21 and air pump 34, the top surface of first processing component 1 is equipped with first circular hole, the top surface of first processing component 1 is equipped with the placement ring 12 at first circular hole, the bottom end of placement ring 12 is connected with filter cartridge 13, and the outer wall of filter cartridge 13 is matched with the inner wall of first circular hole, and the inside of placement ring 12 is equipped with first liquid inlet tray 15, and the inside of first liquid inlet tray 15 is funnel-shaped, and both sides of the outside of first liquid inlet tray 15 are connected with support 14, and the bottom surface of two supports 14 is attached to the top surface of first processing box 11, and the support 14 and first processing box 11 are connected through bolt, and first processing box 11 is equipped with installation groove in the inside of the side near second processing box 21, and pump machine 16 is installed in the inside of installation groove, and the inlet end of pump machine 16 is communicated with conveying pipe, and the outlet end of pump machine 16 is located in the inside of second processing box 21, and through the cooperation of first liquid inlet tray 15, placement ring 12 and filter cartridge 13, first liquid inlet tray 15 is funnel-shaped, can make waste water more smoothly flow into filter cartridge 13, and the large particle solid impurities in waste water are filtered in advance, when starting pump machine 16, it is convenient to pump the waste water in first processing box 11 after pretreatment filtration into second processing box 21, realizes that waste water is transported from first processing component 1 to second processing component 2, and through the cooperation of support 14 and bolt, support 14 is connected with first processing box 11 through bolt, and support 14 provides stable support for first liquid inlet tray 15, avoids first liquid inlet tray 15 to shake or shift when pouring waste water, influences the inflow of waste water, removes bolt, makes support 14 and first liquid inlet tray 15 separate from first processing box 11, and then placement ring 12 is pulled upwards, so that placement ring 12 and filter cartridge 13 are taken out from first processing box 11 as a whole, and filter cartridge 13 is cleaned.

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the present application.Figures 1-5 The utility model provides a technical scheme: the back surface of second processing box 21 is connected with drain pipe, one end of drain pipe is equipped with electromagnetic valve, the top surface of second processing box 21 is equipped with second circular hole, the inside rotation of second circular hole is connected with second liquid inlet tray 22, the outer wall of second liquid inlet tray 22 is equipped with a plurality of drain holes 23 in the inside of second processing box 21, the inside top end of second liquid inlet tray 22 is installed with pressurizing pump 24, and the liquid inlet end of pressurizing pump 24 extends to outside through second liquid inlet tray 22, and the outside of one end of second liquid inlet tray 22 is equipped with gear ring 27 away from the inside of second processing box 21, and the upper end of second processing box 21 is installed with mounting bracket 28, and the inside rotation of mounting bracket 28 is connected with the shaft, and the outside of shaft is equipped with gear 29, and gear 29 and gear ring 27 are mutually engaged, and the top surface of mounting bracket 28 is installed with servo motor 210, and the output of servo motor 210 is fixedly connected with the shaft, and the bottom of second liquid inlet tray 22 is connected with stirring rod 25, and the outside both sides of stirring rod 25 are installed with stirring blade 26, and the bottom of stirring rod 25 and the top end of aeration tray 31 exist distance, by setting pressurizing pump 24, the liquid inlet end of pressurizing pump 24 is connected with the container of storage medicament through pipeline, when starting pressurizing pump 24 can increase the pressure of liquid inlet, and the medicament is transported to second processing box 21 rapidly, improves the efficiency of dosing, when starting servo motor 210 makes it drive shaft rotation drive gear 29 rotation, realizes the rotation of second liquid inlet tray 22 in the inside of second circular hole under the meshing effect of gear 29 and gear ring 27, and the distribution of medicament liquid in the wastewater in second processing box 21 can be more uniform with the cooperation of drain hole 23, improves the uniformity of dosing, when second liquid inlet tray 22 rotates, stirring rod 25 and stirring blade 26 rotate, and the wastewater in second processing box 21 is stirred, makes the medicament and wastewater mix fully, accelerates the chemical reaction, improves the effect of wastewater treatment, through the cooperation of electromagnetic valve and drain pipe, when opening electromagnetic valve, the wastewater after the treatment of second processing box 21 passes drain pipe and is discharged.

[0033] Specifically, the working principle of the wastewater treatment device for coal-to-methanol is as follows: when in use, the first liquid inlet disc 15, the placement ring 12 and the filter cylinder 13 are used in cooperation, the first liquid inlet disc 15 is funnel-shaped, which can make the wastewater flow into the filter cylinder 13 more smoothly, and the large-particle solid impurities in the wastewater are preliminarily filtered, when the pump 16 is started, the wastewater in the first treatment box 11 that has been pretreated and filtered can be pumped into the second treatment box 21, realizing the delivery of the wastewater from the first treatment assembly 1 to the second treatment assembly 2, through the cooperation of the support 14 and the bolt, the support 14 is connected with the first treatment box 11 through the bolt, which provides stable support for the first liquid inlet disc 15, avoiding the shaking or displacement of the first liquid inlet disc 15 when the wastewater is poured, which affects the inflow of the wastewater, when the pump 16 is started, the wastewater in the first treatment box 11 that has been pretreated and filtered can be pumped into the second treatment box 21, realizing the delivery of the wastewater from the first treatment assembly 1 to the second treatment assembly 2, the liquid inlet end of the pressurizing pump 24 is connected with the container storing the liquid medicine through the pipeline, when the pressurizing pump 24 is started, the pressure of the liquid inlet can be increased, the liquid medicine can be quickly delivered into the second treatment box 21, and the efficiency of adding the liquid medicine is improved, when the servo motor 210 is started, the rotating shaft is driven to rotate, the gear 29 is driven to rotate, the second liquid inlet disc 22 is driven to rotate in the second circular hole under the meshing action of the gear 29 and the gear ring 27, and the liquid medicine can be more uniformly distributed into the wastewater in the second treatment box 21 through the cooperation of the liquid outlet hole 23, and the uniformity of adding the liquid medicine is improved, when the second liquid inlet disc 22 rotates, the stirring rod 25 and the stirring blade 26 rotate, the wastewater in the second treatment box 21 is stirred, the liquid medicine is fully mixed with the wastewater, the chemical reaction is accelerated, the effect of wastewater treatment is improved, a pair of aeration discs 31 are installed at the bottom end of the second treatment box 21, which can make the air more uniformly distributed at the bottom of the wastewater, and then a uniform aeration effect is generated, sufficient and uniform oxygen is provided for the growth and metabolism of the microorganisms in the wastewater, which helps to improve the effect of wastewater treatment, when the air pump 34 is started, compressed air is provided for the aeration discs 31, the wastewater contains a large amount of biodegradable organic matter, the aeration can provide sufficient oxygen for the aerobic microorganisms, so that the organic matter is decomposed into carbon dioxide and water in the aerobic environment, thereby removing the organic matter in the wastewater, reducing the chemical oxygen demand and the biochemical oxygen demand, when the electromagnetic valve is opened, the wastewater treated in the second treatment box 21 can be discharged through the liquid discharge pipe, the bolts at the support 14 are removed, the support 14 and the first liquid inlet disc 15 are separated from the first treatment box 11, then the placement ring 12 is pulled upwards, and the placement ring 12 and the filter cylinder 13 are taken out from the first treatment box 11 as a whole, and the filter cylinder 13 is cleaned.

Claims

1. A coal-to-methanol wastewater treatment device, characterized in that, The utility model provides waste water treatment device, including first processing component (1), second processing component (2) and aeration component (3), second processing component (2) is arranged at the outside of first processing component (1), aeration component (3) is arranged at the inside of second processing component (2), first processing component (1) is used for the pretreatment filtration of waste water, second processing component (2) is used for dosing to waste water, aeration component (3) is used for the aeration of waste water, second processing component (2) includes second processing box (21), aeration component (3) includes a pair of aeration disc (31), a pair of aeration disc (31) is installed at the inside bottom end of second processing box (21), and the air inlet end of a pair of aeration disc (31) extends to the outside through second processing box (21) and is connected with the communicating pipe (32), and the outer wall of second processing box (21) is installed with air pump (34) on one side, and the air outlet end of air pump (34) is communicated with hose (33), and the one end of hose (33) is connected with the one end of communicating pipe (32) away from air pump (34), and hose (33), communicating pipe (32) and aeration disc (31) are communicated.

2. The device for treating wastewater from coal-to-methanol according to claim 1, characterized in that, The first processing component (1) includes a first processing box (11), and the first processing box (11) is installed on the side of the outer wall of the second processing box (21) opposite to the air pump (34). A first circular hole is formed in the top surface of the first processing component (1). A placement ring (12) is arranged on the top surface of the first processing component (1) at the first circular hole. A filter cartridge (13) is connected to the bottom end of the placement ring (12). The outer wall of the filter cartridge (13) is in clearance fit with the inner wall of the first circular hole. A first liquid inlet disc (15) is arranged in the placement ring (12). The first liquid inlet disc (15) has a funnel shape.

3. The device for treating wastewater from coal-to-methanol according to claim 2, characterized in that, Both sides of the first liquid inlet disc (15) are connected with a support (14). The bottom surface of the two supports (14) is attached to the top surface of the first processing box (11). The support (14) and the first processing box (11) are connected by bolts.

4. The device for treating wastewater from coal-to-methanol according to claim 3, characterized in that, An installation groove is formed in the inside of the first processing box (11) near the second processing box (21). A pump (16) is installed in the installation groove. The liquid inlet end of the pump (16) is communicated with a conveying pipe. The liquid outlet end of the pump (16) is located in the inside of the second processing box (21).

5. The device for treating wastewater from coal-to-methanol according to claim 1, characterized in that, The back surface of the second processing box (21) is communicated with a liquid discharge pipe. An electromagnetic valve is installed at one end of the liquid discharge pipe. A second circular hole is formed in the top surface of the second processing box (21). A second liquid inlet disc (22) is rotatably connected in the second circular hole. A plurality of liquid discharge holes (23) are formed in the outer wall of the second liquid inlet disc (22) located in the inside of the second processing box (21). A pressure pump (24) is installed at the inside top end of the second liquid inlet disc (22). The liquid inlet end of the pressure pump (24) extends to the outside through the second liquid inlet disc (22).

6. The coal-to-methanol wastewater treatment device according to claim 5, characterized in that, The second liquid inlet disc (22) is externally sleeved with a gear ring (27) at one end away from the inside of the second treatment box (21), the upper end of the second treatment box (21) is provided with a mounting rack (28), the inside of the mounting rack (28) is rotationally connected with a rotating shaft, the outside of the rotating shaft is externally sleeved with a gear (29), the gear (29) and the gear ring (27) are in meshing engagement with each other, the top surface of the mounting rack (28) is provided with a servo motor (210), and the output end of the servo motor (210) is fixedly connected with the rotating shaft.

7. The coal-to-methanol wastewater treatment device according to claim 6, characterized in that, The bottom end of the second liquid inlet disc (22) is connected with a stirring rod (25), both sides of the outside of the stirring rod (25) are provided with stirring blades (26), and the bottom end of the stirring rod (25) is away from the top end of the aerator disc (31).

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