Phosphorus removal device for wastewater in phosphate production

Abstract

The utility model discloses a kind of phosphonate production wastewater phosphorus removal devices, belong to phosphonate production wastewater phosphorus removal technical field, this phosphonate production wastewater phosphorus removal device, including equipment support and fixed installation equipment support on the pretreatment tank, the corresponding sedimentation tank is provided with in pretreatment tank directly below, drainage pipe is connected in sedimentation tank, and drainage valve pipe is connected in sedimentation tank and pretreatment tank between through, pretreatment tank is connected with wastewater pipe, PH adjusting pipe and reagent pipe through, rotating shaft is rotatably connected in the pretreatment tank along the axis direction, and rotating shaft is provided with the mixed mechanism of stirring, cleaning flocculate in pretreatment tank inner wall;When phosphonate wastewater is handled, by driving rotating shaft rotation, can drive scraping strip rotation cleaning flocculate in pretreatment tank inner wall, can also linkage control drainage ring pipe reciprocating rotation in sedimentation tank, keep reagent and wastewater mix evenly, improve the effect of wastewater phosphorus removal treatment.

Description

Technical Field

[0001] This utility model relates to the field of phosphorus removal technology for wastewater from phosphate ester production, specifically a phosphorus removal device for wastewater from phosphate ester production. Background Technology

[0002] The wastewater from phosphate ester production has a high phosphorus concentration and is mostly a mixture of organic and inorganic phosphorus, with a complex composition. It may also contain pollutants such as esters, acids, and organic solvents. Direct discharge can lead to eutrophication of water bodies, such as cyanobacterial blooms. At the same time, toxic substances can inhibit the activity of aquatic organisms. Therefore, the wastewater after processing needs to be treated for phosphorus removal to reduce its pollution.

[0003] For example, patent CN219098930U discloses a treatment device for wastewater from the production of pyrophosphate flame retardants, including a first reaction tower, an inlet pipe, a first outlet pipe, a coagulation tank, a vertical flow sedimentation tank, a sludge hopper, an automatic dosing device, a second outlet pipe, a plate and frame filter press, an ozone generator, a first branch pipe, and a first exhaust pipe. The outlet of the ozone generator is connected to the bottom of the first reaction tower through the first branch pipe, and the top of the first reaction tower is connected to one end of the first exhaust pipe. The ozone reacts with the organic phosphorus in the wastewater, oxidizing and degrading it into inorganic phosphorus or small molecule phosphorus-containing compounds, while simultaneously degrading pyridine through ring-opening into easily oxidized aliphatic organic compounds. Automatic dosing is also included. The device adds a phosphorus removal agent to the coagulation tank, which removes inorganic phosphorus or small-molecule phosphorus compounds. The struvite and insoluble phosphorus metal salts generated by the reaction are discharged through a vertical flow sedimentation tank, and a precipitate with low water content is obtained through a plate and frame filter press. The wastewater has a complex composition and usually requires multiple treatments. During the dosing of the agent, some flocculent matter adheres to the inner wall of the tank. This matter is highly polluting and, if not cleaned, will cause reverse pollution to the subsequent production wastewater, reducing the treatment effect of phosphate ester wastewater. In addition, the uniformity of the mixing of wastewater and agent has a significant impact on the generation of precipitated waste. The phosphorus content in the wastewater is unevenly distributed, and some phosphorus components may still remain in the cleaned wastewater.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing phosphorus removal devices for phosphate ester production wastewater. Utility Model Content

[0005] The purpose of this invention is to provide a phosphorus removal device for wastewater from phosphate ester production, in order to solve the problems mentioned in the background art, such as the complex composition of wastewater, the need for multiple treatments, the presence of flocculent matter adhering to the inner wall of the tank during the dosing of chemicals, the high polluting power of which, if not cleaned, will cause reverse pollution to subsequent production wastewater, reducing the treatment effect of phosphate ester wastewater. In addition, the uniformity of the mixing of wastewater and chemicals has a significant impact on the generation of precipitated waste, and the uneven distribution of phosphorus in the wastewater may result in some phosphorus components remaining in the cleaned wastewater.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a phosphorus removal device for wastewater from phosphate ester production, comprising an equipment support and a pretreatment tank fixedly mounted on the equipment support. A sedimentation tank is disposed directly below the pretreatment tank, and a drain pipe is connected through the sedimentation tank. A drain valve pipe is connected through the sedimentation tank and the pretreatment tank. A wastewater pipe, a pH adjustment pipe, and a reagent pipe are connected through the pretreatment tank. A rotating shaft is rotatably connected in the pretreatment tank along the axial direction, and a mixing mechanism for stirring and cleaning flocculent matter on the inner wall of the pretreatment tank is disposed on the rotating shaft.

[0007] Preferably, the mixing mechanism includes multiple stirring crossbars fixedly connected at equal intervals to the rotating shaft, stirring longitudinal bars fixedly connected to the multiple stirring crossbars, and a scraper fixed to the side of the stirring longitudinal bar near the inner wall of the pretreatment tank; the scraper is attached to the inner wall of the pretreatment tank.

[0008] Preferably, the sedimentation tank is equipped with a dosing mechanism for uniformly adding chemicals to the pretreated wastewater.

[0009] Preferably, the dosing mechanism includes an arc-shaped groove on the upper surface of the sedimentation tank, a slider is slidably connected in the arc-shaped groove, a dosing pipe is fixed through the slider, and a drain ring pipe is connected through the bottom of the dosing pipe; the drain ring pipe is located below the drain pipe.

[0010] Preferably, a drive shaft is rotatably connected to the sedimentation tank, a drive gear is fixedly sleeved on the drive shaft, a driven gear ring is meshed next to the drive gear, and the driven gear ring is fixedly installed on the outside of the slider.

[0011] Preferably, a driven block is fixedly installed on the upper end face of the transmission shaft, and an active block is fixedly connected to the outside of the rotating shaft, with the active block rotating and contacting the outer edge of the driven block.

[0012] Preferably, a protective cover is fixedly installed at the bottom of the pretreatment tank, and the rotating shaft is rotatably connected to the protective cover along the axial direction. The protective cover is elastically connected to the rotating shaft through a spiral spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the phosphorus removal device for wastewater from phosphate ester production adjusts the pH value of the wastewater in the pretreatment tank and adds a reagent to the wastewater to convert the organic phosphorus in the wastewater into inorganic phosphorus. Then, the pretreated wastewater is introduced into the sedimentation tank, and a reagent is added to separate the phosphorus in the wastewater through chemical precipitation, thereby achieving phosphorus removal treatment of the wastewater.

[0014] The rotating shaft is equipped with a mixing mechanism that stirs and cleans the flocculent material inside the pretreatment tank. When wastewater enters the pretreatment tank, the rotating shaft drives the stirring crossbar and stirring longitudinal bar to rotate during the mixing and removal of organic phosphorus, thereby achieving uniform mixing of the wastewater. At the same time, it drives the scraper to rotate against the inner wall of the pretreatment tank, which can simultaneously clean the flocculent material inside the pretreatment tank and maintain the continuous wastewater treatment capacity of the pretreatment tank.

[0015] The sedimentation tank is equipped with a dosing mechanism for uniformly adding chemicals to the pretreated wastewater. Chemicals are added to the sedimentation tank through a chemical dosing pipe, forming chemical precipitates in the sedimentation tank. During the dosing process, the chemical dosing pipe and the drain ring pipe can be controlled to rotate back and forth in the sedimentation tank to maintain uniform chemical dosing, efficiently and evenly remove phosphorus from the wastewater, and improve the wastewater treatment effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the equipment support structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the pretreatment tank and sedimentation tank of this utility model.

[0018] Figure 3 This is a schematic diagram of the scraper structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the driven block structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the active gear structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the driven gear ring structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the drug dosing tube structure of this utility model.

[0023] In the diagram: 1. Equipment support; 2. Pretreatment tank; 21. Wastewater pipe; 22. pH adjustment pipe; 23. Chemical pipe; 3. Sedimentation tank; 31. Arc-shaped trough; 32. Sliding block; 33. Chemical dosing pipe; 34. Drainage ring pipe; 4. Drainage pipe; 5. Drainage valve pipe; 6. Rotating shaft; 7. Stirring crossbar; 8. Stirring longitudinal bar; 9. Scraper; 10. Drive shaft; 11. Driving gear; 12. Driven gear ring; 13. Driven block; 14. Driving block; 15. Protective cover; 16. Spiral spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-3 The present invention provides the following technical solution: a phosphorus removal device for wastewater from phosphate ester production, comprising an equipment support 1 and a pretreatment tank 2 fixedly installed on the equipment support 1, a sedimentation tank 3 correspondingly arranged directly below the pretreatment tank 2, a drain pipe 4 connected through the sedimentation tank 3, and a drain valve pipe 5 connected through the sedimentation tank 3 and the pretreatment tank 2, and a wastewater pipe 21, a pH adjustment pipe 22 and a reagent pipe 23 connected through the pretreatment tank 2; a rotating shaft 6 is rotatably connected in the pretreatment tank 2 along the axial direction, and a mixing mechanism for stirring and cleaning flocculent matter on the inner wall of the pretreatment tank 2 is provided on the rotating shaft 6.

[0026] Please see Figure 2 and Figure 3 The mixing mechanism includes multiple stirring crossbars 7 that are fixedly connected to the rotating shaft 6 at equal intervals. Stirring longitudinal bars 8 are fixedly connected to the side of the multiple stirring crossbars 7, and a scraper 9 is fixed on the side of the stirring longitudinal bar 8 near the inner wall of the pretreatment tank 2. The scraper 9 is attached to the inner wall of the pretreatment tank 2.

[0027] Wastewater from the phosphate ester production process is introduced into the pretreatment tank 2 through wastewater pipe 21. First, reagents are added to the pretreatment tank 2 through pH adjustment pipe 22 to adjust the pH value of the wastewater. Then, reagents are added to the pretreatment tank 2 through reagent pipe 23 to convert the organic phosphorus in the wastewater into inorganic phosphorus. The pretreated wastewater is then introduced into the sedimentation tank 3 through drain valve pipe 5 for further treatment of the inorganic phosphorus in the wastewater.

[0028] When pretreatment tank 2 is treating wastewater, the motor at the top controls the rotation of the rotating shaft 6. The rotating shaft 6 drives the stirring crossbar 7 and stirring longitudinal bar 8 to rotate circumferentially inside the pretreatment tank 2, keeping the wastewater and reagents and agents mixed evenly. At the same time, the stirring longitudinal bar 8 drives the scraper 9 to rotate against the inner wall of the pretreatment tank 2, cleaning the flocculent material attached to the inner wall of the pretreatment tank 2, reducing the pollutants in the pretreatment tank 2, so that the pretreatment tank 2 can continuously and effectively pretreat wastewater.

[0029] Example 2: Please refer to Figures 3-7Based on Embodiment 1, a dosing mechanism is also disclosed, the specific structure of which is as follows: A dosing mechanism for uniformly adding chemicals to pretreated wastewater is provided on the sedimentation tank 3. The dosing mechanism includes an arc-shaped groove 31 opened on the upper end face of the sedimentation tank 3, a slider 32 slidably connected in the arc-shaped groove 31, a chemical dosing pipe 33 passing through and fixed in the slider 32, and a drain ring pipe 34 passing through and connected to the bottom of the chemical dosing pipe 33; the drain ring pipe 34 is located below the drain pipe 4. A drive shaft 10 is rotatably connected to the sedimentation tank 3, a drive gear 11 is fixedly sleeved on the drive shaft 10, a driven gear ring 12 is meshed beside the drive gear 11, and the driven gear ring 12 is fixedly installed on the outside of the slider 32.

[0030] Please see Figures 3-5 A driven block 13 is fixedly installed on the upper end face of the drive shaft 10, and an active block 14 is fixedly connected to the outside of the rotating shaft 6. The active block 14 rotates and contacts the outer edge of the driven block 13. A protective cover 15 is fixedly installed at the bottom of the pretreatment tank 2. The rotating shaft 6 is rotatably connected to the protective cover 15 along the axial direction, and the inside of the protective cover 15 is elastically connected to the rotating shaft 6 through a spiral spring 16.

[0031] Chemical agents are added to sedimentation tank 3 through reagent dosing pipe 33. After chemical reaction, chemical precipitate is formed, and the phosphorus component in the wastewater is separated in the precipitate. The precipitated liquid is finally discharged out through drainage pipe 4, thus achieving the purpose of phosphorus removal treatment of phosphate ester production wastewater.

[0032] When the rotating shaft 6 rotates, it drives the driving block 14 to rotate synchronously. The driving block 14 contacts the edge of the driven block 13 as it rotates, pushing the driven block 13 to rotate closer to the inner wall of the pretreatment tank 2. The driven block 13 drives the lower transmission shaft 10 to rotate synchronously. The rotation of the transmission shaft 10 stretches the spiral spring 16. When the driving block 14 rotates and separates from the driven block 13, the elastic tension of the spiral spring 16 can drive the transmission shaft 10 to rotate in the opposite direction. Through the transmission of the above structure, the drive shaft 10 can drive the driving gear 11 to rotate reciprocally. The driven gear 11 meshes with the driven gear ring 12, which controls the reciprocating rotation of the driven gear ring 12. The driven gear ring 12 is fixed on the slider 32, which controls the slider 32 to reciprocate along the opening direction of the arc groove 31, thereby achieving the purpose of controlling the reciprocating rotation of the reagent dosing pipe 33 and the drain ring pipe 34. The drain ring pipe 34 reciprocates in the sedimentation tank 3, which can micro-mix the internal liquid and uniformly output the reagent, keeping the reagent and the pretreated wastewater uniformly mixed and reacted, further improving the phosphorus removal effect of the phosphate ester production wastewater.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A phosphorus removal device for wastewater from phosphate ester production, comprising an equipment support (1) and a pretreatment tank (2) fixedly mounted on the equipment support (1), characterized in that: A sedimentation tank (3) is provided directly below the pretreatment tank (2). A drain pipe (4) is connected through the sedimentation tank (3). A drain valve pipe (5) is connected through the sedimentation tank (3) and the pretreatment tank (2). A wastewater pipe (21), a pH adjustment pipe (22), and a reagent pipe (23) are connected through the pretreatment tank (2). The pretreatment tank (2) is rotatably connected to a rotating shaft (6) along the axial direction. The rotating shaft (6) is equipped with a mixing mechanism for stirring and cleaning the flocculent material inside the pretreatment tank (2).

2. The phosphorus removal device for wastewater from phosphate ester production according to claim 1, characterized in that: The mixing mechanism includes multiple stirring crossbars (7) that are fixedly connected at equal intervals on the rotating shaft (6), and stirring longitudinal bars (8) that are fixedly connected to the sides of the multiple stirring crossbars (7). A scraper (9) is fixed on the side of the stirring longitudinal bar (8) that is close to the inner wall of the pretreatment tank (2). The scraper (9) is attached to the inner wall of the pretreatment tank (2).

3. The phosphorus removal device for wastewater from phosphate ester production according to claim 1, characterized in that: The sedimentation tank (3) is equipped with a dosing mechanism for uniformly adding reagents to the pretreated wastewater.

4. The phosphorus removal device for wastewater from phosphate ester production according to claim 3, characterized in that: The dosing mechanism includes an arc-shaped groove (31) on the upper surface of the sedimentation tank (3), a slider (32) is slidably connected in the arc-shaped groove (31), a dosing pipe (33) is fixed through the slider (32), and a drain ring pipe (34) is connected through the bottom of the dosing pipe (33). The drain ring pipe (34) is located below the drain pipe (4).

5. A phosphorus removal device for wastewater from phosphate ester production according to claim 4, characterized in that: A drive shaft (10) is rotatably connected to the sedimentation tank (3). A drive gear (11) is fixedly sleeved on the drive shaft (10). A driven gear ring (12) is meshed next to the drive gear (11). The driven gear ring (12) is fixedly installed on the outside of the slider (32).

6. A phosphorus removal device for wastewater from phosphate ester production according to claim 5, characterized in that: A driven block (13) is fixedly installed on the upper end face of the transmission shaft (10), and an active block (14) is fixedly connected to the outside of the rotating shaft (6). The active block (14) rotates and contacts the outer edge of the driven block (13).

7. A phosphorus removal device for wastewater from phosphate ester production according to claim 6, characterized in that: The pretreatment tank (2) is fixedly installed with a protective cover (15) at the bottom. The rotating shaft (6) is rotatably connected in the protective cover (15) along the axial direction, and the inside of the protective cover (15) is elastically connected to the rotating shaft (6) through a spiral spring (16).

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