A high-efficiency demulsification and impurity removal device for high-salinity wastewater pretreatment

Abstract

The utility model relates to wastewater treatment technical field provides a kind of high-efficiency demulsification and impurity removal device for high-salinity wastewater pretreatment, including base, the one side of base top is fixed with pretreatment component, the one side of pretreatment component inside is provided with coarse filter structure, the other side of base top end is fixed with demulsification tank, the top end of demulsification tank is fixed with control structure.The utility model is provided with control structure, through the mutual cooperation between inverter, PH electrode and solenoid valve, the automatic control of pH value is realized, always maintain pH value in the best interval of demulsifier play usefulness, to significantly improve demulsification efficiency and effect, ensure oil-water fully separated, avoid artificial detection and dosing hysteresis and inaccuracy, realize the device has the function of convenient automatic control wastewater pH value, improve the convenience and work efficiency of the high-salinity wastewater pretreatment high-efficiency demulsification and impurity removal device when using.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a high-efficiency demulsification and impurity removal device for the pretreatment of high-salt wastewater. Background Technology

[0002] With the acceleration of my country's industrialization, industries such as petrochemicals, coal chemicals, pharmaceuticals, printing and dyeing, and comprehensive seawater utilization have generated a large amount of complex high-salinity wastewater. This type of wastewater not only contains high concentrations of inorganic salts, but also typically contains high concentrations of organic matter, oils, and specific recalcitrant toxic pollutants, exhibiting strong biological toxicity and extremely poor biodegradability. Direct discharge without proper treatment will cause serious and irreversible pollution to water bodies, soil, and the ecological environment, while also leading to a huge waste of water resources. Therefore, it is necessary to design a highly efficient demulsification and impurity removal device for the pretreatment of high-salinity wastewater.

[0003] To address this, patent CN222829100U discloses an integrated demulsification, extraction, and impurity removal device. This integrated device includes a tower body and a stirring assembly. The tower body contains sequentially connected extraction demulsification zone, extraction phase separation zone, and impurity removal zone. An inlet communicating with the extraction demulsification zone is located at the top of the tower body. The stirring assembly includes a drive motor, an outer stirring shaft, a first stirring blade, a second stirring blade, and a third stirring blade. The drive motor is located at the top of the tower body. One end of the outer stirring shaft is connected to the power output end of the drive motor, and the other end extends into the tower body. The first, second, and third stirring blades are all located on the other end of the outer stirring shaft. The first stirring blade is located in the extraction demulsification zone, the second stirring blade is located in the extraction phase separation zone, and the third stirring blade is located in the impurity removal zone.

[0004] Although the aforementioned integrated demulsification, extraction, and impurity removal device can remove impurities in different areas during use, the pH value of the water changes continuously during the impurity removal process, which affects the demulsification efficiency of the demulsifier. Therefore, it is necessary to design a high-efficiency demulsification and impurity removal device for the pretreatment of high-salt wastewater. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency demulsification and impurity removal device for the pretreatment of high-salt wastewater, in order to solve the defect of existing high-efficiency demulsification and impurity removal devices for the pretreatment of high-salt wastewater where the pH value of the water changes continuously during the impurity removal process, which affects the demulsification efficiency of the demulsifier.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency demulsification and impurity removal device for the pretreatment of high-salt wastewater, including a base;

[0007] A pretreatment component is fixed to one side of the top of the base, and a coarse filter structure is provided inside one side of the pretreatment component.

[0008] A demulsifying tank is fixed to the other side of the top of the base. A regulating structure is fixed to the top of the demulsifying tank. The regulating structure includes an acid adding tank fixed to one side of the top of the demulsifying tank. An acid adding pipe is fixed to the bottom of the acid adding tank. The regulating structure also includes an alkali adding tank fixed to the other side of the top of the demulsifying tank. An alkali adding pipe is fixed to the bottom of the alkali adding tank.

[0009] The demulsification tank is equipped with a stirring assembly, and a sedimentation and impurity removal structure is provided on the side of the demulsification tank away from the pretreatment assembly.

[0010] Furthermore, the pretreatment assembly includes a treatment box, a treatment chamber, a wastewater inlet pipe, and a top cover. The treatment box is fixed to one side of the top of the base, the treatment chamber is opened inside the treatment box, the wastewater inlet pipe is fixed to one side of the top of the treatment box, and the top cover is fixed to the top of the treatment box.

[0011] Furthermore, the coarse filtration structure includes a handle, a horizontal plate, a grid plate, coarse filter holes, and a mounting groove. The mounting groove is located on the inner wall of the processing box on both sides. A grid plate is installed inside the mounting groove. Coarse filter holes are evenly distributed inside the grid plate. The top of the grid plate passes through the top cover and is fixedly connected to the horizontal plate. A handle is fixed to the top of the horizontal plate.

[0012] Furthermore, the grating plate and the processing box are connected by a mounting slot, and the coarse filter holes are evenly distributed inside the grating plate.

[0013] Furthermore, the control structure also includes a phase converter, a pH electrode, and a solenoid valve. The phase converter is fixed on the inner wall of one side of the demulsification tank, and a pH electrode is fixed on one side of the phase converter. Solenoid valves are installed on the inner walls of both the acid addition tube and the alkali addition tube.

[0014] Furthermore, a microcontroller is installed inside the phase converter, and the output terminal of the phase converter and the output terminal of the solenoid valve are electrically connected through the microcontroller.

[0015] Furthermore, the stirring assembly includes a drive motor, a drive shaft, and stirring rods. The drive motor is fixedly installed on the outer wall of one side of the demulsifying tank, the drive shaft is located inside the demulsifying tank, and stirring rods are evenly fixed on the outer walls on both sides of the drive shaft.

[0016] Furthermore, one end of the drive shaft extends to the outside of the demulsifying chamber and is fixedly connected to the output end of the drive motor, while the other end of the drive shaft extends to the inside of the demulsifying chamber and is rotatably connected to the demulsifying chamber.

[0017] Furthermore, the sedimentation and impurity removal structure includes a sedimentation tank located on one side of the demulsification tank. A protective cover is fixed to the top of the sedimentation tank, a clear water pipe is fixed to one side of the top of the sedimentation tank, inclined plates are evenly fixed to the inner wall of one side of the sedimentation tank, a baffle is fixed to the inner wall of the sedimentation tank on the side away from the inclined plates, and a discharge pipe is fixed to the bottom of the sedimentation tank. The sedimentation and impurity removal structure also includes a sealing plate fixed to the inner wall of one side of the top of the sedimentation tank.

[0018] Furthermore, the inclined plates are evenly distributed inside the sedimentation tank, and the bottom end of the sealing plate is fixedly connected to the top end of the inclined plates.

[0019] The present invention provides a high-efficiency demulsification and impurity removal device for the pretreatment of high-salinity wastewater, the advantages of which are:

[0020] By incorporating a control structure, the demulsification efficiency of the demulsifier is highly dependent on the pH value of the wastewater. This structure, through the cooperation of the phase converter, pH electrode, and solenoid valve, achieves automatic pH control, consistently maintaining the pH value within the optimal range for the demulsifier to exert its effect. This significantly improves demulsification efficiency and effectiveness, ensures thorough oil-water separation, avoids the lag and inaccuracy of manual detection and dosing, and achieves real-time, accurate, and automatic pH control. This ensures the stability of the treatment process and the reliability of the effluent quality, enabling the device to automatically control the pH value of wastewater. This enhances the convenience and efficiency of the high-efficiency demulsification and impurity removal device for high-salt wastewater pretreatment.

[0021] By incorporating a coarse filtration structure, with the grating plate and coarse filter holes serving as the first line of defense in pretreatment, it effectively prevents large particles of impurities from entering the subsequent demulsification tank and sedimentation tank, avoiding pipe blockage, damage to the impeller of the stirring assembly, or scratches on the pH electrode. This protects the core equipment and extends the overall service life of the device. The interlocking connection between the grating plate and the treatment box makes cleaning simple and quick, eliminating the need for downtime or the use of complex tools, reducing the difficulty and cost of daily maintenance. This enables the device to facilitate wastewater pretreatment, improving the convenience and applicability of this high-salt wastewater pretreatment demulsification and impurity removal device in use.

[0022] By incorporating a sedimentation and impurity removal structure with multiple sets of inclined plates, the settling efficiency and processing capacity are significantly improved. Within a limited footprint, it achieves highly efficient removal of fine flocs and impurities generated after demulsification, resulting in low effluent turbidity. As the final key step in physical separation, it effectively removes most suspended solids from the water, ensuring that the pretreated water meets the influent requirements of subsequent high-salinity wastewater treatment processes, preventing clogging and contamination of subsequent equipment. This device facilitates solid-liquid separation of wastewater, enhancing the ease of use of this highly efficient demulsification and impurity removal device for high-salinity wastewater pretreatment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0025] Figure 3 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0026] Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0027] Figure 5 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0028] Figure 6 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0029] The following are the annotations in the diagram: 1. Base; 2. Pretreatment component; 21. Treatment box; 22. Treatment chamber; 23. Wastewater inlet pipe; 24. Top cover; 3. Coarse filtration structure; 31. Handle; 32. Horizontal plate; 33. Grating plate; 34. Coarse filter holes; 35. Mounting groove; 4. Control structure; 41. Acid tank; 42. Acid pipe; 43. Alkali tank; 44. Alkali pipe; 45. Phase converter; 46. pH electrode; 47. Solenoid valve; 5. Demulsification tank; 6. Stirring component; 61. Drive motor; 62. Drive shaft; 63. Stirring rod; 7. Sedimentation and impurity removal structure; 71. Protective cover; 72. Sedimentation tank; 73. Clear water pipe; 74. Inclined plate; 75. Baffle; 76. Impurity discharge pipe; 77. Sealing plate. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-6 The present invention provides a high-efficiency demulsification and impurity removal device for the pretreatment of high-salt wastewater, including a base 1.

[0032] Reference Figures 1-4 and Figure 6A pretreatment component 2 is fixed to one side of the top of the base 1. The pretreatment component 2 includes a treatment box 21, a treatment chamber 22, a wastewater inlet pipe 23, and a top cover 24. The treatment box 21 is fixed to one side of the top of the base 1. The treatment chamber 22 is opened inside the treatment box 21. The wastewater inlet pipe 23 is fixed to one side of the top of the treatment box 21. The top cover 24 is fixed to the top of the treatment box 21. A coarse filter structure 3 is provided on one side inside the pretreatment component 2. The coarse filter structure 3 includes a handle 31 and a horizontal plate 32. The equipment includes a grid plate 33, coarse filter holes 34, and a mounting groove 35. The mounting groove 35 is located on the inner wall of the processing box 21 on both sides. The grid plate 33 is installed inside the mounting groove 35. The coarse filter holes 34 are evenly distributed inside the grid plate 33. The top of the grid plate 33 passes through the top cover 24 and is fixedly connected to a horizontal plate 32. A handle 31 is fixed to the top of the horizontal plate 32. The grid plate 33 and the processing box 21 are engaged and connected through the mounting groove 35. The coarse filter holes 34 are evenly distributed inside the grid plate 33.

[0033] High-salt wastewater first enters the treatment chamber 22 through the wastewater inlet pipe 23. The bar screen 33 set in the chamber has evenly distributed coarse filter holes 34. When the wastewater flows through, larger suspended solids and floating objects in the wastewater are physically intercepted by the bar screen 33 and the coarse filter holes 34. The bar screen 33 is connected to the treatment box 21 by the mounting grooves 35 on both sides, forming a flexibly detachable module. When the impurities on the bar screen 33 accumulate to a certain extent, the staff can use the handle 31 to remove the entire bar screen 33 from the treatment box 21 for manual cleaning or replacement, and then put it back into the mounting groove 35 to resume operation.

[0034] Reference Figures 1-6A demulsifying tank 5 is fixed to the other side of the top of the base 1. A regulating structure 4 is fixed to the top of the demulsifying tank 5. The regulating structure 4 includes an acid adding tank 41 fixed to one side of the top of the demulsifying tank 5, and an acid adding pipe 42 fixed to the bottom of the acid adding tank 41. The regulating structure 4 also includes an alkali adding tank 43 fixed to the other side of the top of the demulsifying tank 5, and an alkali adding pipe 44 fixed to the bottom of the alkali adding tank 43. The regulating structure 4 also includes a phase converter 45, a pH electrode 46, and a solenoid valve 47. The phase converter 45 is fixed to the inner wall of one side of the demulsifying tank 5. A pH electrode 46 is fixed to one side of the phase converter 45. Solenoid valves 47 are installed on the inner walls of both the acid adding pipe 42 and the alkali adding pipe 44. A microcontroller is installed inside the phase converter 45. The output terminal of the phase converter 45 and the output terminal of the solenoid valve 47 are electrically connected through the microcontroller. A stirring assembly 6 is installed inside the demulsifying tank 5. The stirring assembly 6 includes a drive motor 61, a drive shaft 62 and stirring rods 63. The drive motor 61 is fixedly installed on the outer wall of one side of the demulsifying tank 5. The drive shaft 62 is located inside the demulsifying tank 5. Stirring rods 63 are evenly fixed on the outer walls on both sides of the drive shaft 62. One end of the drive shaft 62 extends to the outside of the demulsifying tank 5 and is fixedly connected to the output terminal of the drive motor 61. The other end of the drive shaft 62 extends to the inside of the demulsifying tank 5 and is rotatably connected to the demulsifying tank 5.

[0035] The pH electrode 46 installed inside the demulsification tank 5 continuously monitors the real-time pH value of the wastewater and transmits the signal to the phase converter 45. The phase converter 45 integrates a microcontroller, which compares the received pH signal with the preset optimal demulsification pH range. If the pH value is too low, the microcontroller controls the solenoid valve 47 on the alkali addition pipe 44 to open, quantitatively adding alkali solution from the alkali addition tank 43 to the demulsification tank 5 to increase the pH value. If the pH value is too high, the microcontroller controls the solenoid valve 47 on the acid addition pipe 42 to open, quantitatively adding acid solution from the acid addition tank 41 to decrease the pH value. The pH electrode 46 continuously monitors, and the phase converter 45 continuously judges and issues commands, forming a complete closed-loop automatic control system until the pH value stabilizes within the preset optimal range.

[0036] Reference Figures 1-6 A sedimentation and impurity removal structure 7 is provided on the side of the demulsifying tank 5 away from the pretreatment component 2. The sedimentation and impurity removal structure 7 includes a sedimentation tank 72 provided on one side of the demulsifying tank 5. A protective cover 71 is fixed to the top of the sedimentation tank 72. A clear water pipe 73 is fixed to one side of the top of the sedimentation tank 72. Inclined plates 74 are evenly fixed on the inner wall of one side of the sedimentation tank 72. A baffle 75 is fixed on the inner wall of the sedimentation tank 72 on the side away from the inclined plates 74. A discharge pipe 76 is fixed to the bottom of the sedimentation tank 72. The sedimentation and impurity removal structure 7 also includes a sealing plate 77 fixed on the inner wall of one side of the top of the sedimentation tank 72. The inclined plates 74 are evenly distributed inside the sedimentation tank 72. The bottom of the sealing plate 77 and the top of the inclined plates 74 are fixedly connected.

[0037] After the demulsification reaction, the wastewater flows from the demulsification tank 5 into the sedimentation tank 72. The baffle 75 acts as a buffer and evenly distributes the water, preventing the incoming water from stirring up the settled sludge. The wastewater flows through the densely arranged inclined plates 74, which divide the sedimentation tank 72 into many shallow sedimentation channels, greatly increasing the sedimentation area. Under the action of gravity, the suspended flocs in the wastewater only need to settle a very short vertical distance to reach the surface of the inclined plates 74. Subsequently, these flocs slide down the inclined plate surface to the bottom of the sedimentation tank 72. The clarified water flows upward between the groups of inclined plates 74 and is finally discharged from the top clear water pipe 73 to enter the subsequent treatment unit. The sludge that settles to the bottom of the tank continues to accumulate and is periodically discharged through the bottom discharge pipe 76. The sealing plate 77 ensures the sealing of the top area of ​​the inclined plates 74 and guides the water flow and sludge to move along the designed path.

[0038] 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 high-efficiency demulsification and impurity removal device for pretreatment of high-salt wastewater, comprising a base (1); Its features are: A pretreatment component (2) is fixed on one side of the top of the base (1), and a coarse filter structure (3) is provided on one side inside the pretreatment component (2); A demulsifying tank (5) is fixed on the other side of the top of the base (1). A regulating structure (4) is fixed on the top of the demulsifying tank (5). The regulating structure (4) includes an acid adding tank (41) fixed on one side of the top of the demulsifying tank (5). An acid adding pipe (42) is fixed at the bottom of the acid adding tank (41). The regulating structure (4) also includes an alkali adding tank (43) fixed on the other side of the top of the demulsifying tank (5). An alkali adding pipe (44) is fixed at the bottom of the alkali adding tank (43). The demulsifier (5) is equipped with a stirring assembly (6) inside, and a sedimentation and impurity removal structure (7) is provided on the side of the demulsifier (5) away from the pretreatment assembly (2).

2. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 1, characterized in that: The pretreatment component (2) includes a treatment box (21), a treatment chamber (22), a wastewater inlet pipe (23), and a top cover (24). The treatment box (21) is fixed to one side of the top of the base (1). The treatment chamber (22) is opened inside the treatment box (21). The wastewater inlet pipe (23) is fixed to one side of the top of the treatment box (21). The top cover (24) is fixed to the top of the treatment box (21).

3. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 1, characterized in that: The coarse filter structure (3) includes a handle (31), a horizontal plate (32), a grid plate (33), coarse filter holes (34), and a mounting groove (35). The mounting groove (35) is opened on the inner wall of the processing box (21) on both sides of the processing box (21). The grid plate (33) is provided inside the mounting groove (35). The coarse filter holes (34) are evenly opened inside the grid plate (33). The top of the grid plate (33) passes through the top cover (24) and is fixedly connected to the horizontal plate (32). The top of the horizontal plate (32) is fixed with a handle (31).

4. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 3, characterized in that: The grating plate (33) and the processing box (21) are connected by a mounting groove (35), and the coarse filter holes (34) are evenly distributed inside the grating plate (33).

5. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 1, characterized in that: The control structure (4) also includes a phase converter (45), a pH electrode (46) and a solenoid valve (47). The phase converter (45) is fixed on the inner wall of one side of the demulsification tank (5). A pH electrode (46) is fixed on one side of the phase converter (45). Solenoid valves (47) are installed on the inner walls of the acid addition tube (42) and the alkali addition tube (44).

6. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 5, characterized in that: The phase converter (45) is equipped with a microcontroller, and the output terminal of the phase converter (45) and the output terminal of the solenoid valve (47) are electrically connected through the microcontroller.

7. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 1, characterized in that: The stirring assembly (6) includes a drive motor (61), a drive shaft (62), and stirring rods (63). The drive motor (61) is fixedly installed on the outer wall of one side of the demulsifying tank (5). The drive shaft (62) is located inside the demulsifying tank (5). Stirring rods (63) are evenly fixed on the outer walls on both sides of the drive shaft (62).

8. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 7, characterized in that: One end of the drive shaft (62) extends to the outside of the demulsifier (5) and is fixedly connected to the output end of the drive motor (61), and the other end of the drive shaft (62) extends to the inside of the demulsifier (5) and is rotatably connected to the demulsifier (5).

9. The high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 1, characterized in that: The sedimentation and impurity removal structure (7) includes a sedimentation tank (72) located on one side of the demulsification tank (5). A protective cover (71) is fixed to the top of the sedimentation tank (72). A clear water pipe (73) is fixed to one side of the top of the sedimentation tank (72). Inclined plates (74) are evenly fixed to the inner wall of one side of the sedimentation tank (72). A baffle (75) is fixed to the inner wall of the sedimentation tank (72) on the side away from the inclined plate (74). A discharge pipe (76) is fixed to the bottom of the sedimentation tank (72). The sedimentation and impurity removal structure (7) also includes a sealing plate (77) fixed to the inner wall of one side of the top of the sedimentation tank (72).

10. A high-efficiency demulsification and impurity removal device for pretreatment of high-salinity wastewater according to claim 9, characterized in that: The inclined plates (74) are evenly distributed inside the sedimentation tank (72), and the bottom end of the sealing plate (77) is fixedly connected to the top end of the inclined plates (74).

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