High-concentration sewage pretreatment system for hydrogen peroxide production

Abstract

The utility model discloses a high-concentration sewage pretreatment system for hydrogen peroxide production, which relates to the technical field of hydrogen peroxide production and comprises an adjusting tank, an emulsification separator and an electrocatalytic oxidizer. The emulsification separator is connected with the electrocatalytic oxidizer through a pipeline, and an adjusting and stirring mechanism for stirring wastewater is arranged on the adjusting tank. According to the hydrogen peroxide production high-concentration wastewater pretreatment system, high-concentration wastewater firstly enters the adjusting tank, the adjusting time can be confirmed according to the discharging period of the hydrogen peroxide production high-concentration wastewater, the buffering capacity on organic matter loads can be improved, and the rapid change of the loads of the high-concentration wastewater pretreatment system is prevented; the demulsification separator can remove heavy aromatics existing in the form of emulsified oil in the high-concentration wastewater, and the electrocatalytic oxidizer can directly degrade COD (Chemical Oxygen Demand) and degrade macromolecular structure organic matters into easily biodegradable micromolecular organic matters, so that the BOD / COD ratio is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen peroxide production, in particular to a high-concentration sewage pretreatment system for hydrogen peroxide production. Background Art

[0002] Using industrial wastewater as recycled water after deep treatment has become an important way for companies to reduce wastewater discharge and control water pollution.

[0003] At present, the domestic treatment of hydrogen peroxide production wastewater usually uses flotation-catalytic oxidation-flocculation sedimentation-hydrolysis acidification-contact oxidation method, but it is unable to treat wastewater with high COD, and the wastewater is in the regulating tank, and the stirring device can only stir at a single position, so that the wastewater is not stirred sufficiently. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a high-concentration wastewater pretreatment system for hydrogen peroxide production, which solves the problem that the current hydrogen peroxide wastewater treatment device cannot treat wastewater with a high COD, and the stirring device can only stir the wastewater at a single position in the regulating tank, thereby causing the wastewater to be not stirred sufficiently.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-concentration wastewater pretreatment system for hydrogen peroxide production, including a regulating tank, an emulsification separator and an electrocatalytic oxidizer, the wastewater in the regulating tank is pumped into the emulsification separator by a delivery pump, the emulsification separator and the electrocatalytic oxidizer are connected by a pipeline, the regulating tank is provided with a regulating and stirring mechanism for stirring the wastewater, the inner wall of the regulating tank is provided with a limit plate, and the lower part of the limit plate is provided with a filter plate for filtering the wastewater.

[0006] The regulating and stirring mechanism includes a positioning sleeve that rotates and passes through the upper part of the regulating tank, a movable shaft is inserted into the interior of the positioning sleeve for longitudinal sliding, the lower end of the movable shaft is located in the regulating tank and connected to the limiting shaft, the lower end of the limiting shaft is connected to an agitator, and the outside of the limiting shaft is provided with a filter anti-blocking mechanism for wiping and cleaning the filter plate, the outside of the positioning sleeve is located in the regulating tank and is provided with a follower gear, one side of the follower gear is meshed with a main gear, one end of the main gear rotates through the internal top side of the regulating tank and is connected to a driven wheel, a screw is connected to the upper center of the driven wheel, and a movable plate is screwed to the outside of the screw through a thread, and the end of the movable plate away from the screw is rotatably arranged at the upper end of the movable shaft, and the regulating and stirring mechanism also includes a driving part for driving the driven wheel to rotate.

[0007] Preferably, the driving unit comprises a servo motor installed on one side outside the regulating tank, the output shaft of the servo motor is connected to a driving wheel, and the driving wheel and the driven wheel are connected via a belt transmission.

[0008] Preferably, the outer wall of the movable shaft is provided with a clamping strip, the inner side of the positioning sleeve is provided with a clamping groove matched with the clamping strip, and the clamping strip is clamped in the clamping groove and longitudinally slidably connected with the positioning sleeve.

[0009] Preferably, the rotation direction of the servo motor output shaft is constantly changed, so that the movable plate continuously moves up and down.

[0010] Preferably, the filter anti-blocking mechanism includes a limit bar rotatably arranged on the outside of the limit shaft, an L-shaped rod is connected to the upper part of one end of the limit bar away from the limit shaft, and a moving rod is connected to one end of the L-shaped rod away from the limit bar, and the end of the moving rod away from the L-shaped rod slides longitudinally through the upper part of the limit plate and is connected to a brush handle, and the brush handle contacts one side of the filter plate.

[0011] Preferably, the brush handle is made of wear-resistant material.

[0012] The utility model provides a high-concentration wastewater pretreatment system for hydrogen peroxide production, which has the following beneficial effects compared with the prior art:

[0013] In the hydrogen peroxide production high-concentration wastewater pretreatment system, the high-concentration wastewater first enters the regulating tank. The regulation time can be confirmed according to the discharge cycle of the hydrogen peroxide production high-concentration wastewater. The buffering capacity for organic load can be improved to prevent the rapid change of the load of the high-concentration wastewater pretreatment system. The demulsifier can remove heavy aromatics in the form of emulsified oil in the high-concentration wastewater. The electrocatalytic oxidizer can directly degrade COD and degrade high-molecular-structure organic matter into easily biodegradable small-molecule organic matter, thereby improving the BOD / COD ratio.

[0014] The hydrogen peroxide production high-concentration wastewater pretreatment system, when the wastewater enters the regulating tank, is provided with an adjusting stirring mechanism. Under the operation of the servo motor, the stirrer can stir the wastewater, and during stirring, the stirrer can continuously move up and down to stir the wastewater at different heights, thereby improving the stirring effect.

[0015] The hydrogen peroxide production high-concentration wastewater pretreatment system can drive the brush handle to move up and down when the wastewater is stirred, so that the brush handle can clean the filter plate and prevent the filter plate from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the regulating stirring mechanism of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the filter screen anti-blocking mechanism of the utility model.

[0019] In the figure: 1. regulating tank; 2. emulsifier separator; 3. electrocatalytic oxidizer; 4. delivery pump; 5. regulating stirring mechanism; 51. positioning sleeve; 52. moving shaft; 521. clamping strip; 53. limiting shaft; 54. agitator; 55. filter screen anti-blocking mechanism; 551. limiting strip; 552. L-shaped rod; 553. moving rod; 554. brush handle; 56. slave gear; 57. main gear; 58. driven wheel; 59. screw; 510. moving plate; 511. servo motor; 512. driving wheel; 513. belt; 6. limiting plate; 7. filter screen plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides three technical solutions: Embodiment 1

[0022] See also Figure 1 In an embodiment of the utility model, a high-concentration wastewater pretreatment system for hydrogen peroxide production includes a regulating tank 1, an emulsifier separator 2 and an electrocatalytic oxidizer 3. The wastewater in the regulating tank 1 is pumped into the emulsifier separator 2 by a delivery pump 4, and the emulsifier separator 2 and the electrocatalytic oxidizer 3 are connected by a pipeline.

[0023] In the above scheme: the high-concentration wastewater first enters the regulating tank 1, and the regulating time can be confirmed according to the discharge cycle of the high-concentration wastewater produced by hydrogen peroxide. The buffering capacity for the organic load can also be improved to prevent the rapid change of the load of the high-concentration wastewater pretreatment system. The emulsifier separator 2 can remove the heavy aromatics in the form of emulsified oil in the high-concentration wastewater. The electrocatalytic oxidizer 3 can directly degrade COD and degrade the high-molecular structure organic matter into easily biodegradable small-molecule organic matter, thereby improving the BOD / COD ratio.

[0024] The second embodiment is different from the first embodiment in that:

[0025] See also Figure 2In the embodiment of the utility model, a regulating and stirring mechanism 5 for stirring the wastewater is provided on the regulating tank 1, a limiting plate 6 is provided on the inner wall of the regulating tank 1, and a filter plate 7 for filtering the wastewater is provided at the lower part of the limiting plate 6. The regulating and stirring mechanism 5 includes a positioning sleeve 51 that rotates through the upper part of the regulating tank 1, and a moving shaft 52 is inserted into the interior of the positioning sleeve 51 for longitudinal sliding. The lower end of the moving shaft 52 is located in the regulating tank 1 and connected to the limiting shaft 53. The lower end of the limiting shaft 53 is connected to the agitator 54, and the outer part of the limiting shaft 53 is provided with a filter plate for filtering the wastewater. 7 is a filter screen anti-blocking mechanism 55 for wiping and cleaning, the outside of the positioning sleeve 51 is provided with a slave gear 56 in the regulating tank 1, one side of the slave gear 56 is meshed with a main gear 57, one end of the main gear 57 rotates through the inner top side of the regulating tank 1 and is connected to a driven wheel 58, the upper center of the driven wheel 58 is connected to a screw rod 59, the outer side of the screw rod 59 is screwed with a moving plate 510 through a thread, and the end of the moving plate 510 away from the screw rod 59 is rotatably arranged at the upper end of the moving shaft 52, and the regulating and stirring mechanism 5 also includes a driving part for driving the driven wheel 58 to rotate.

[0026] See also Figure 2 In the embodiment of the utility model, the driving unit includes a servo motor 511 installed on one side of the outside of the regulating tank 1, the output shaft of the servo motor 511 is connected to a driving wheel 512, and the driving wheel 512 and the driven wheel 58 are connected through a belt 513.

[0027] In the above scheme: when wastewater enters the regulating tank 1, the servo motor 511 drives the driving wheel 512 to rotate forward and reverse continuously, and the driving wheel 512 causes the belt 513 to drive the driven wheel 58 to rotate, and the driven wheel 58 drives the main gear 57 to rotate, and the main gear 57 drives the slave gear 56 meshing with it to rotate, and the slave gear 56 drives the positioning sleeve 51 to rotate, and when the positioning sleeve 51 rotates, it drives the moving shaft 52 to rotate, and the moving shaft 52 drives the agitator 54 at the lower end of the limiting shaft 53 to rotate, and the agitator 54 stirs the wastewater.

[0028] For further information, see Figure 2 In the embodiment of the utility model, a clamping strip 521 is provided on the outer wall of the movable shaft 52, and a clamping groove matched with the clamping strip 521 is provided on the inner side of the positioning sleeve 51. The clamping strip 521 is clamped in the clamping groove and longitudinally slidably connected with the positioning sleeve 51. When the positioning sleeve 51 rotates, the movable shaft 52 is driven to rotate.

[0029] For further information, see Figure 2 In the embodiment of the utility model, the direction of rotation of the output shaft of the servo motor 511 is constantly changed, so that the movable plate 510 is constantly moved up and down, so that the stirrer 54 can perform stirring operations at different height positions.

[0030] Embodiment 3 is different from Embodiment 1 in that:

[0031] See also Figure 2-3 In the embodiment of the utility model, the filter anti-blocking mechanism 55 includes a limiting bar 551 rotatably arranged on the outside of the limiting shaft 53, and the upper part of the end of the limiting bar 551 away from the limiting shaft 53 is connected to an L-shaped rod 552, and the end of the L-shaped rod 552 away from the limiting bar 551 is connected to a moving rod 553, and the end of the moving rod 553 away from the L-shaped rod 552 longitudinally slides through the upper part of the limiting plate 6 and is connected to a brush handle 554, and the brush handle 554 contacts one side of the filter plate 7.

[0032] In the above scheme: when the agitator 54 moves longitudinally, the limit shaft 53 will drive the limit bar 551 to move longitudinally, and the limit bar 551 will cause the L-shaped rod 552 to drive the moving rod 553 to move longitudinally, and the brush handle 554 at the lower end of the moving rod 553 will clean the impurities attached to the surface of the filter plate 7 to prevent the filter plate 7 from being blocked.

[0033] For further information, see Figure 2-3 In the embodiment of the utility model, the brush handle 554 is made of a wear-resistant material, preferably nylon, to improve the wear resistance of the brush handle 554.

[0034] Working principle: High-concentration wastewater first enters the regulating tank 1. The regulating time can be confirmed according to the high-concentration wastewater discharge cycle of hydrogen peroxide production. It can also improve the buffering capacity of organic matter load and prevent the rapid change of the load of the high-concentration wastewater pretreatment system. The emulsifier separator 2 can remove heavy aromatics in the form of emulsified oil in the high-concentration wastewater. The electrocatalytic oxidizer 3 can directly degrade COD and degrade high-molecular-structure organic matter into small-molecule organic matter that is easily biodegradable, thereby improving the BOD / COD ratio;

[0035] When the wastewater enters the regulating tank 1, the servo motor 511 drives the driving wheel 512 to rotate continuously forward and reversely, and the driving wheel 512 causes the belt 513 to drive the driven wheel 58 to rotate, and the driven wheel 58 drives the main gear 57 to rotate, and the main gear 57 drives the slave gear 56 meshing with it to rotate, and the slave gear 56 drives the positioning sleeve 51 to rotate. Since the card strip 521 on the moving shaft 52 is engaged in the card groove inside the positioning sleeve 51, the positioning sleeve 51 drives the moving shaft 52 to rotate when it rotates, and the moving shaft 52 drives the agitator 54 at the lower end of the limit shaft 53 to rotate, and the agitator 54 stirs the wastewater;

[0036] The driven wheel 58 rotates and drives the screw 59 to rotate. The screw 59 drives the movable plate 510 to move longitudinally, and then drives the movable shaft 52 to move longitudinally, so that the agitator 54 can perform agitation operations at different height positions in the wastewater.

[0037] When the agitator 54 moves longitudinally, the limit shaft 53 will drive the limit bar 551 to move longitudinally, and the limit bar 551 will cause the L-shaped rod 552 to drive the moving rod 553 to move longitudinally, and the brush handle 554 at the lower end of the moving rod 553 will clean the impurities attached to the surface of the filter plate 7 to prevent the filter plate 7 from being blocked.

[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A high-concentration wastewater pretreatment system for hydrogen peroxide production, comprising a regulating tank (1), an emulsifier separator (2) and an electrocatalytic oxidizer (3), characterized in that: The wastewater in the regulating tank (1) is pumped into the emulsifier separator (2) by a delivery pump (4); the emulsifier separator (2) is connected to the electrocatalytic oxidizer (3) by a pipeline; the regulating tank (1) is provided with a regulating stirring mechanism (5) for stirring the wastewater; the inner wall of the regulating tank (1) is provided with a limit plate (6); the lower part of the limit plate (6) is provided with a filter plate (7) for filtering the wastewater; The regulating and stirring mechanism (5) comprises a positioning sleeve (51) which rotates through the upper part of the regulating tank (1), a movable shaft (52) is inserted and slidably penetrated longitudinally inside the positioning sleeve (51), the lower end of the movable shaft (52) is located inside the regulating tank (1) and is connected to a limiting shaft (53), the lower end of the limiting shaft (53) is connected to an agitator (54), and a filter screen anti-blocking mechanism (55) for wiping and cleaning the filter screen plate (7) is arranged outside the limiting shaft (53), and a gear (56) is arranged outside the positioning sleeve (51) which is located inside the regulating tank (1) and is provided with a filter screen anti-blocking mechanism (55) for wiping and cleaning the filter screen plate (7). 56), one side of the slave gear (56) is meshed with a master gear (57), one end of the master gear (57) rotates through the inner top side of the regulating tank (1) and is connected to a driven wheel (58), the upper center of the driven wheel (58) is connected to a screw rod (59), the outer part of the screw rod (59) is screwed with a moving plate (510) through a thread, and one end of the moving plate (510) away from the screw rod (59) is rotatably arranged on the upper end of the moving shaft (52), and the regulating and stirring mechanism (5) also includes a driving unit for driving the driven wheel (58) to rotate.

2. A hydrogen peroxide production high-concentration wastewater pretreatment system according to claim 1, characterized in that: The driving unit comprises a servo motor (511) installed on one side of the outside of the regulating tank (1); the output shaft of the servo motor (511) is connected to a driving wheel (512); the driving wheel (512) and the driven wheel (58) are connected to each other via a belt (513).

3. A hydrogen peroxide production high-concentration wastewater pretreatment system according to claim 1, characterized in that: The outer wall of the movable shaft (52) is provided with a clamping strip (521), the inner side of the positioning sleeve (51) is provided with a clamping groove matched with the clamping strip (521), and the clamping strip (521) is clamped in the clamping groove and longitudinally slidably connected with the positioning sleeve (51).

4. A hydrogen peroxide production high-concentration wastewater pretreatment system according to claim 2, characterized in that: The direction of rotation of the output shaft of the servo motor (511) is constantly changed, causing the movable plate (510) to continuously move up and down.

5. A hydrogen peroxide production high-concentration wastewater pretreatment system according to claim 1, characterized in that: The filter screen anti-blocking mechanism (55) comprises a limit bar (551) rotatably arranged outside the limit shaft (53); an upper portion of one end of the limit bar (551) away from the limit shaft (53) is connected to an L-shaped rod (552); an end of the L-shaped rod (552) away from the limit bar (551) is connected to a moving rod (553); an end of the moving rod (553) away from the L-shaped rod (552) longitudinally slides through the upper portion of the limit plate (6) and is connected to a brush handle (554); the brush handle (554) contacts one side of the filter screen plate (7).

6. A hydrogen peroxide production high-concentration wastewater pretreatment system according to claim 5, characterized in that: The brush handle (554) is a brush handle (554) made of a wear-resistant material.

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