Wastewater treatment device for purified terephthalic acid refining production process

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a purified terephthalic acid refining production process wastewater treatment device which comprises a treatment box, the upper surface of the treatment box is communicated with a feeding hopper, one side face of the treatment box is communicated with a water drainage pipe, and the water drainage pipe is communicated with a water outlet. A supporting plate is fixedly connected to one side face of the treatment box, four supporting columns are fixedly connected to the upper surface of the supporting plate, weighing sensors are fixedly installed at the top ends of the four supporting columns, a treatment agent box is installed among the four weighing sensors, and a discharging hose is communicated between the treatment agent box and the treatment box. When the wastewater treatment device is used, wastewater can be quantitatively added and treated, meanwhile, the treatment effect is better through stirring, the wastewater is filtered for multiple times, internal impurities and garbage are removed more thoroughly, the treated wastewater can be rapidly sampled and detected, and the wastewater treatment device is convenient and rapid to use.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment device for a purified terephthalic acid refining production process. Background Art

[0002] Purified terephthalic acid (PTA) is an important chemical raw material, widely used in polyester industrial production. Since the 1980s, the market demand for PTA has increased dramatically, resulting in a rapid increase in PTA production capacity, which has also driven the development of PTA wastewater treatment technology. PTA is usually produced by catalytic oxidation of paraxylene (PX) at high temperature and high pressure, and then refined. During the refining process, a large amount of high-concentration organic wastewater will be generated, which needs to be treated before it can be discharged.

[0003] Some commonly used wastewater treatment devices have poor wastewater treatment effects when in use, and cannot add treatment agents quantitatively, which affects the wastewater treatment effect. At the same time, they cannot sample and test the treated wastewater in a timely and rapid manner, and are not convenient for cleaning the filter used to treat the wastewater, making them inconvenient to use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a wastewater treatment device for the purified terephthalic acid refining production process, which solves the problems of poor wastewater treatment effect, inability to quantitatively add treatment agents, affecting the wastewater treatment effect, inability to timely and quickly sample and test the treated wastewater, inconvenience in cleaning the filter used for treating the wastewater, and inconvenience in use.

[0005] The present invention provides the following technical scheme: a wastewater treatment device for a purified terephthalic acid refining production process, comprising a treatment box, the upper surface of the treatment box is connected to a feed hopper, one side of the treatment box is connected to a drain pipe, one side of the treatment box is fixedly connected to a support plate, the upper surface of the support plate is fixedly connected to four pillars, the tops of the four pillars are fixedly installed with weighing sensors, a treatment agent box is installed between the four weighing sensors, a discharge hose is connected between the treatment agent box and the treatment box, two filter screens are fixedly connected between the inner side walls of the treatment box, two cleaning components are arranged inside the treatment box, the inner side walls of the treatment box are fixedly connected to inclined plates, the opposite sides of the two inclined plates are provided with grooves, the inner side walls of the two grooves are rotatably connected to threaded rods, the surfaces of the two threaded rods are threadedly sleeved with water retaining plates, a stirring rod is rotatably connected between the inner side walls of the treatment box, the surface of the stirring rod is fixedly connected to two rows of stirring plates, a sampling component is arranged on one side of the treatment box, and an electromagnetic valve is arranged at the discharge end of the treatment agent box.

[0006] Preferred technical solution one: the cleaning assembly includes a screw, a screw sleeve, a sliding rod, a sliding sleeve, and a brush plate. The screw is rotatably connected between the inner side walls of the processing box, the screw sleeve is threadedly sleeved on the surface of the screw, the sliding rod is fixedly connected between the inner side walls of the processing box, the sliding sleeve is slidably sleeved on the surface of the sliding rod, and the brush plate is fixedly connected between the screw sleeve and the sliding sleeve.

[0007] Preferred technical solution two: two discharge ports are opened on one side of the processing box, and movable plates are movably installed at the positions of the two discharge ports. A lock is provided between the movable plate and the processing box, and a handle is fixedly connected to the surface of the movable plate. The two discharge ports correspond to the two filter screens respectively, and the two cleaning components are respectively located above the two filter screens, and the filter hole diameter of the filter screen located above is larger than the filter hole diameter of the filter screen located below.

[0008] Preferred technical solution three: The two side surfaces of the processing box are fixedly connected with the first motor, the output ends of the two first motors extend to the inside of the two grooves respectively and are fixedly connected to the two threaded rods respectively, and the inner side walls of the two grooves are fixedly connected with a group of limit rods, and the surfaces of the two water baffles are provided with a group of limit grooves, and the two water baffles are slidably connected to the outside of the two groups of limit rods through the two groups of limit grooves.

[0009] Preferred technical solution four: one end of the two screw rods extends to the outside of the processing box and is fixedly sleeved with a sprocket, a chain is connected to the transmission link between the two sprockets, a second motor is fixedly connected to the side of the processing box, and the output end of the second motor is fixedly connected to one of the sprockets.

[0010] Preferred technical solution five: A third motor is fixedly connected to one side of the processing box, the output end of the third motor extends into the interior of the processing box and is fixedly connected to the stirring rod, and a plurality of through holes are provided on the surface of each stirring plate.

[0011] Preferred technical solution six: The sampling assembly includes a connecting plate, a sampling cup is placed on the upper surface of the connecting plate, a sampling tube is connected to the surface of the processing box, one end of the sampling tube extends to the interior of the processing box, and the other end of the sampling tube is located above the sampling cup. Two movable grooves are opened on one side of the processing box, and movable rods are slidably sleeved inside the two movable grooves. A fixed plate is fixedly connected between the ends of the two movable rods located inside the processing box, a plug is fixedly connected to the surface of the fixed plate, a pushing frame is fixedly connected between the outer ends of the two movable rods, and the surfaces of the outer ends of the two movable rods are sleeved with springs.

[0012] Preferred technical solution seven: a sealing ring is provided between the two movable grooves and the two movable rods, the plug matches the sampling tube, and the plug can be inserted into the interior of the sampling tube for sealing.

[0013] Compared with the prior art, the present invention provides a wastewater treatment device for the purified terephthalic acid refining production process, which has the following beneficial effects: when in use, the wastewater is discharged into the interior of the treatment box through the feed hopper and is initially filtered through the filter screen above to remove some large impurities, and the filtered wastewater falls on the water baffle plate, and then the treatment agent inside the treatment agent box is added into the wastewater by controlling the electromagnetic valve to open, and at the same time, the weight of the added treatment agent can be monitored by the weighing sensor to perform quantitative addition, and when the addition is completed, the stirring rod and the stirring plate are driven by the rotation of the third motor to stir and mix the wastewater and the treatment agent to make them fully react, and then the two first motors are driven by the rotation of the two water baffle plates to move to the interior of the inclined plate, so that the treated wastewater falls on the filter screen below for re-filtration, and some fine suspended particles inside are removed, and the re-filtered wastewater falls to the bottom of the treatment box. The push frame is then pushed inwardly to drive the movable rod and the fixed plate to move inwardly, thereby pulling the plug out of the sampling tube, and then the waste water can flow out into the sampling cup through the sampling tube. After the sampling is completed, the push frame is released, and the plug is stuck into the interior of the sampling tube under the elastic force of the spring for sealing. Then the waste water can be tested to check whether the waste water treatment is qualified. When the filter needs to be cleaned, the two screws can be driven to rotate by the rotation of the second motor, so that the brush plate can be driven to clean the garbage on the filter to the position of the discharge port. The garbage can be discharged by opening the movable plate, which is convenient and fast. When the waste water treatment device is in use, the waste water can be quantitatively added to the waste water for treatment. At the same time, the treatment effect is better through stirring, and the waste water is filtered multiple times, and the internal impurities and garbage are removed more thoroughly, and the treated waste water can be quickly sampled and tested, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of the present invention; Figure 2 It is a cross-sectional view of the internal structure of the present invention; Figure 3 This is a structural exploded view of the sampling assembly and the processing box of the present invention; Figure 4 This is a disassembled diagram of the inclined plate and the processing box structure of the present invention; Figure 5 It is a left view of the overall structure of the present invention; Figure 6 It is the right view of the overall structure of the present invention.

[0015] In the figure: 1. treatment box; 2. feed hopper; 3. drain pipe; 4. support plate; 5. pillar; 6. weighing sensor; 7. treatment agent box; 8. discharge hose; 9. filter screen; 10. inclined plate; 11. groove; 12. threaded rod; 13. water retaining plate; 14. stirring rod; 15. stirring plate; 16. screw; 17. screw sleeve; 18. slide rod; 19. slide sleeve; 20. brush plate; 21. first motor; 22. limit rod; 23. sprocket; 24. second motor; 25. third motor; 26. connecting plate; 27. sampling tube; 28. movable groove; 29. ​​movable rod; 30. fixed plate; 31. plug; 32. push frame; 33. spring; 34. sampling cup; 35. movable plate; 36. chain. DETAILED DESCRIPTION

[0016] See also Figure 1-6 , Embodiment 1: A wastewater treatment device for the purified terephthalic acid refining production process, comprising a treatment box 1, a feed hopper 2 is connected to the upper surface of the treatment box 1, a drainage pipe 3 is connected to one side of the treatment box 1, a support plate 4 is fixedly connected to one side of the treatment box 1, four pillars 5 are fixedly connected to the upper surface of the support plate 4, a weighing sensor 6 is fixedly installed on the top of each of the four pillars 5, a treatment agent box 7 is installed between the four weighing sensors 6, a discharge hose 8 is connected between the treatment agent box 7 and the treatment box 1, and two filter 100 are fixedly connected between the inner side walls of the treatment box 1. Net 9, two cleaning components are arranged inside the processing box 1, both side walls inside the processing box 1 are fixedly connected with inclined plates 10, and grooves 11 are opened on the opposite sides of the two inclined plates 10, and the inner side walls of the two grooves 11 are rotatably connected with threaded rods 12, and the surfaces of the two threaded rods 12 are threadedly sleeved with water retaining plates 13, and a stirring rod 14 is rotatably connected between the two side walls inside the processing box 1, and two rows of stirring plates 15 are fixedly connected on the surface of the stirring rod 14, a sampling component is arranged on one side of the processing box 1, and an electromagnetic valve is arranged at the discharge end of the treatment agent box 7.

[0017] Embodiment 2: The difference between this embodiment and embodiment 1 is that, the cleaning assembly includes a screw 16, a screw sleeve 17, a slide rod 18, a sleeve 19, and a brush plate 20. The screw 16 is rotatably connected between the inner side walls of the treatment box 1, the screw sleeve 17 is threadedly sleeved on the surface of the screw 16, the slide rod 18 is fixedly connected between the inner side walls of the treatment box 1, the sleeve 19 is slidably sleeved on the surface of the slide rod 18, and the brush plate 20 is fixedly connected between the screw sleeve 17 and the sleeve 19. The garbage and impurities on the two filter screens 9 can be quickly cleaned by the cleaning assembly to ensure the filtering effect of the wastewater.

[0018] Embodiment 3: The difference between this embodiment and embodiment 1 lies in that, two discharge ports are provided on one side of the processing box 1, and movable plates 35 are movably installed at the two discharge ports. A lock is provided between the movable plate 35 and the processing box 1, and a handle is fixedly connected to the surface of the movable plate 35. The two discharge ports correspond to two filter screens 9 respectively, and two cleaning components are respectively located above the two filter screens 9. The filter hole diameter of the upper filter screen 9 is larger than the filter hole diameter of the lower filter screen 9, so as to facilitate the rapid discharge of garbage on the filter screen 9 and avoid clogging of the filter screen 9.

[0019] Embodiment 4: The difference between this embodiment and embodiment 1 lies in that, first motors 21 are fixedly connected to both side surfaces of the treatment box 1, the output ends of the two first motors 21 extend to the inside of the two grooves 11 respectively and are fixedly connected to the two threaded rods 12 respectively, a group of limiting rods 22 are fixedly connected to one side wall of the two grooves 11, a group of limiting grooves are provided on the surfaces of the two water baffles 13, the two water baffles 13 are slidably sleeved on the outside of the two groups of limiting rods 22 through the two groups of limiting grooves, and the rotation of the first motor 21 can drive the water baffles 13 to block the wastewater, so that the wastewater and the treatment agent can fully react.

[0020] Embodiment 5: The difference between this embodiment and embodiment 1 is that one end of the two screw rods 16 extends to the outside of the processing box 1 and is fixedly sleeved with a sprocket 23, a chain 36 is connected between the two sprockets 23 for transmission, a second motor 24 is fixedly connected to the side of the processing box 1, and the output end of the second motor 24 is fixedly connected to one of the sprockets 23. The rotation of the second motor 24 automatically drives the two cleaning components to automatically clean the filter 9, which is convenient and quick.

[0021] Embodiment 6: The difference between this embodiment and embodiment 1 is that a third motor 25 is fixedly connected to one side of the treatment box 1, the output end of the third motor 25 extends to the interior of the treatment box 1 and is fixedly connected to the stirring rod 14, and a plurality of through holes are provided on the surface of each stirring plate 15. The rotation of the third motor 25 can fully mix the wastewater and the treatment agent, so that the reaction is more sufficient and faster.

[0022] Embodiment 7: The difference between this embodiment and embodiment 1 lies in that, the sampling assembly comprises a connecting plate 26, a sampling cup 34 is placed on the upper surface of the connecting plate 26, a sampling tube 27 is connected to the surface of the treatment box 1, one end of the sampling tube 27 extends to the interior of the treatment box 1, and the other end of the sampling tube 27 is located above the sampling cup 34, and two movable grooves 28 are provided on one side of the treatment box 1, movable rods 29 are slidably sleeved inside the two movable grooves 28, a fixing plate 30 is fixedly connected between the ends of the two movable rods 29 located inside the treatment box 1, a plug 31 is fixedly connected to the surface of the fixing plate 30, a pushing frame 32 is fixedly connected between the outer ends of the two movable rods 29, and a spring 33 is sleeved on the surface of the outer ends of the two movable rods 29, so that the treated wastewater can be sampled quickly, which is convenient for detecting whether the wastewater treatment is qualified or not.

[0023] Embodiment 8: The difference between this embodiment and embodiment 1 is that a sealing ring is provided between the two movable grooves 28 and the two movable rods 29, and the plug 31 matches the sampling tube 27. The plug 31 can be inserted into the interior of the sampling tube 27 for sealing, thereby preventing wastewater from flowing out of the movable grooves 28 and the interior of the sampling tube 27 when sampling is no longer needed.

[0024] In summary, when the purified terephthalic acid refining production process wastewater treatment device is used, the wastewater is discharged into the interior of the treatment box 1 through the feed hopper 2 and is initially filtered through the filter screen 9 above to remove some large impurities. The filtered wastewater falls on the water baffle 13, and then the treatment agent in the treatment agent box 7 is added into the wastewater by controlling the electromagnetic valve to open. At the same time, the weight of the added treatment agent can be monitored by the weighing sensor 6 to perform quantitative addition. When the addition is completed, the stirring rod 14 and the stirring plate 15 are driven by the rotation of the third motor 25 to stir and mix the wastewater and the treatment agent to make them fully react. Then, the two first motors 21 are driven by the rotation of the two water baffles 13 to move to the interior of the inclined plate 10, so that the treated wastewater falls on the filter screen 9 below for re-filtration to remove some fine suspended particles inside it. The re-filtered wastewater falls to the bottom of the treatment box 1, and then the pushing frame 3 is pushed inward. 2 drives the movable rod 29 and the fixed plate 30 to move inward, so as to pull the plug 31 out of the interior of the sampling tube 27, and then the waste water can flow out into the sampling cup 34 through the sampling tube 27. After the sampling is completed, the pushing frame 32 is released, and the plug 31 is stuck into the interior of the sampling tube 27 under the elastic force of the spring 33 to seal, and then the waste water can be tested to check whether the waste water treatment is qualified. When it is necessary to clean the filter screen 9, the rotation of the second motor 24 can drive the two screws 16 to rotate, and the brush plate 20 can be driven to clean the garbage on the filter screen 9 to the position of the discharge port. The movable plate 35 can be opened to discharge the garbage, which is convenient and fast. When the waste water treatment device is in use, the waste water can be quantitatively added for treatment, and the treatment effect is better through stirring. The waste water is filtered multiple times, and the internal impurities and garbage are removed more thoroughly. The treated waste water can be sampled and tested quickly, which is convenient and fast.

Claims

1. A wastewater treatment device for a purified terephthalic acid refining production process, comprising a treatment tank (1), characterized in that: The upper surface of the treatment box (1) is connected to a feed hopper (2), one side of the treatment box (1) is connected to a drainage pipe (3), one side of the treatment box (1) is fixedly connected to a support plate (4), the upper surface of the support plate (4) is fixedly connected to four pillars (5), the tops of the four pillars (5) are fixedly installed with weighing sensors (6), a treatment agent box (7) is installed between the four weighing sensors (6), a discharge hose (8) is connected between the treatment agent box (7) and the treatment box (1), two filter screens (9) are fixedly connected between the inner side walls of the treatment box (1), and the interior of the treatment box (1) is provided with a filter screen (9). Two cleaning components are provided, both inner side walls of the treatment box (1) are fixedly connected with inclined plates (10), the opposite sides of the two inclined plates (10) are provided with grooves (11), the inner side walls of the two grooves (11) are rotatably connected with threaded rods (12), the surfaces of the two threaded rods (12) are threadedly sleeved with water retaining plates (13), a stirring rod (14) is rotatably connected between the inner side walls of the treatment box (1), and two rows of stirring plates (15) are fixedly connected to the surface of the stirring rod (14), a sampling component is provided on one side of the treatment box (1), and an electromagnetic valve is provided at the discharge end of the treatment agent box (7).

2. A wastewater treatment device for purified terephthalic acid production process according to claim 1, characterized in that: The cleaning assembly comprises a screw rod (16), a screw sleeve (17), a sliding rod (18), a sliding sleeve (19), and a brush plate (20); the screw rod (16) is rotatably connected between two side walls inside the processing box (1); the screw sleeve (17) is threadedly sleeved on the surface of the screw rod (16); the sliding rod (18) is fixedly connected between two side walls inside the processing box (1); the sliding sleeve (19) is slidably sleeved on the surface of the sliding rod (18); and the brush plate (20) is fixedly connected between the screw sleeve (17) and the sliding sleeve (19).

3. A wastewater treatment device for purified terephthalic acid production process according to claim 2, characterized in that: Two discharge ports are provided on one side of the processing box (1), and movable plates (35) are movably installed at the positions of the two discharge ports. A lock is provided between the movable plate (35) and the processing box (1), and a handle is fixedly connected to the surface of the movable plate (35). The two discharge ports correspond to the two filter screens (9) respectively, and the two cleaning components are respectively located above the two filter screens (9), and the filter hole diameter of the filter screen (9) located above is larger than the filter hole diameter of the filter screen (9) located below.

4. The wastewater treatment device for purified terephthalic acid production process according to claim 1, characterized in that: Both side surfaces of the processing box (1) are fixedly connected to first motors (21); the output ends of the two first motors (21) extend to the inside of the two grooves (11) and are fixedly connected to the two threaded rods (12) respectively; one side wall inside the two grooves (11) is fixedly connected to a group of limit rods (22); a group of limit grooves are formed on the surfaces of the two water baffles (13); the two water baffles (13) are slidably sleeved on the outside of the two groups of limit rods (22) through the two groups of limit grooves.

5. The wastewater treatment device for purified terephthalic acid production process according to claim 3, characterized in that: One end of each of the two screw rods (16) extends to the outside of the processing box (1) and is fixedly sleeved with a sprocket (23); a chain (36) is connected between the two sprockets (23); a second motor (24) is fixedly connected to the side of the processing box (1); and an output end of the second motor (24) is fixedly connected to one of the sprockets (23).

6. The wastewater treatment device for purified terephthalic acid production process according to claim 1, characterized in that: A third motor (25) is fixedly connected to one side of the processing box (1), an output end of the third motor (25) extends into the interior of the processing box (1) and is fixedly connected to the stirring rod (14), and a plurality of through holes are formed on the surface of each stirring plate (15).

7. The wastewater treatment device for purified terephthalic acid production process according to claim 1, characterized in that: The sampling assembly comprises a connecting plate (26), a sampling cup (34) is placed on the upper surface of the connecting plate (26), a sampling tube (27) is connected to the surface of the processing box (1), one end of the sampling tube (27) extends into the interior of the processing box (1), and the other end of the sampling tube (27) is located above the sampling cup (34), two movable grooves (28) are provided on one side of the processing box (1), movable rods (29) are slidably sleeved inside the two movable grooves (28), a fixing plate (30) is fixedly connected between the ends of the two movable rods (29) located inside the processing box (1), a plug (31) is fixedly connected to the surface of the fixing plate (30), a pushing frame (32) is fixedly connected between the outer ends of the two movable rods (29), and a spring (33) is sleeved on the surface of the outer ends of the two movable rods (29).

8. The wastewater treatment device for purified terephthalic acid production process according to claim 7, characterized in that: A sealing ring is provided between the two movable grooves (28) and the two movable rods (29), and the plug (31) matches the sampling tube (27). The plug (31) can be inserted into the interior of the sampling tube (27) for sealing.

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