A high-sulfate dibasic acid wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment especially is concerned with a kind of high sulphate binary acid wastewater treatment device, it is stirred mixing to liquid in neutralization process by mixing device, improves the neutralization reaction rate of equipment, by adjusting device to calcium hydroxide powder is uniformly released, to wastewater pH value is neutralized and adjusted, by auxiliary device to the wastewater discharge process after neutralization treatment is filtered, reduce the amount of precipitated particle along with wastewater is discharged, the practicability of device is improved;Including mixing device, adjusting device and auxiliary device, adjusting device is installed on mixing device, auxiliary device is installed on mixing device.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to a device for treating high sulfate dicarboxylic acid wastewater. Background Technology

[0002] Dicarboxylic acids are acids that can ionize into two hydrogen ions (H) in aqueous solution. Based on the degree of dissociation, they can be divided into inorganic dicarboxylic acids (such as sulfuric acid and hydrosulfuric acid) and organic dicarboxylic acids (such as oxalic acid, containing two carboxyl groups –COOH). High-sulfuric acid typically refers to concentrated sulfuric acid (H2SO4) with a mass fraction ≥70%, commonly known as "bad water," and is a highly corrosive mineral acid. Its strong oxidizing, dehydrating, and non-volatile properties distinguish it from dilute sulfuric acid. High-sulfate dicarboxylic acid wastewater mainly originates from the production process of long-chain dicarboxylic acids (such as dodecanoic acid and tridecanoic acid) through bio-fermentation. Producing one ton of long-chain dicarboxylic acid results in the discharge of fifty to sixty tons of wastewater. This wastewater is characterized by strong acidity, high salinity, and high organic matter concentration. Wastewater treatment first involves adding lime (Ca(OH)2) to adjust the pH to 6-8, removing heavy metals (such as Cu²⁺ and Zn²⁺) and some sulfates, followed by secondary treatment.

[0003] The existing Chinese utility model patent with application number CN202223257143.X relates to a neutralization tank for acidic wastewater treatment, including a tank body, slide rail, slider, slide plate, hopper, outlet, support, motor, rotating shaft, stirring rod, transmission shaft, belt, cross plate and electric roller, etc., which can uniformly add lime.

[0004] However, the above-mentioned device does not have the ability to process the solid neutralized products generated during the neutralization process in actual use, which will lead to a large amount of sediment accumulating at the bottom, requiring operators to clean it regularly. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-sulfate dicarboxylic acid wastewater treatment device that uses a mixing device to stir and mix the liquid during the neutralization process, thereby increasing the neutralization reaction rate of the equipment; uses an adjusting device to uniformly release calcium hydroxide powder to neutralize and adjust the pH value of the wastewater; and uses an auxiliary device to filter the wastewater after neutralization treatment during discharge, thereby reducing the amount of precipitated particles discharged with the wastewater, thus improving the practicality of the device.

[0006] This utility model discloses a high-sulfate dicarboxylic acid wastewater treatment device, comprising a mixing device, an adjusting device, and an auxiliary device. The adjusting device is installed on the mixing device, and the auxiliary device is also installed on the mixing device. The mixing device stirs and mixes the liquid during the neutralization process to improve the neutralization reaction rate of the equipment. The adjusting device uniformly releases calcium hydroxide powder to neutralize and adjust the pH value of the wastewater. The auxiliary device filters the wastewater after neutralization treatment during discharge, reducing the amount of precipitated particles discharged with the wastewater and improving the practicality of the device.

[0007] Preferably, the mixing device includes a reaction chamber, a first geared motor, a spiral blade, and a conical spiral blade. A set of first geared motors is installed on the left and right sides of the upper end face of the reaction chamber. The output end of the first geared motor extends through the upper end face of the reaction chamber into the interior of the reaction chamber and connects with the spiral blade. The lower part of the spiral blade is configured as a conical spiral blade. The reaction chamber provides space for wastewater treatment. Turning on the first geared motor transmits power to the spiral blade, causing it to rotate. The rotating spiral blade lifts the calcium hydroxide precipitate at the bottom of the reaction chamber upwards and mixes it with the wastewater, improving the equipment's wastewater treatment efficiency. The lower part of the reaction chamber is triangular-shaped, and the conical spiral blade extends to the bottom of the reaction chamber, lifting the bottom precipitate upwards and reducing the presence of residual calcium hydroxide solids in localized precipitates, thus improving the equipment's practicality.

[0008] Preferably, the regulating device includes a rotating shaft, a first sealing cover plate, a second sealing cover plate, a storage silo, and a plate-type solenoid valve. A set of rectangular holes is provided on the left, right, and center of the upper surface of the reaction chamber. The two sets of first sealing cover plates on the left and right sides and the set of second sealing cover plates in the center are respectively installed in the rectangular holes via a rotating shaft. An external waste liquid pipe is provided on the first sealing cover plate, and a storage silo is installed on the second sealing cover plate. A plate-type solenoid valve is provided at the lower part of the storage silo, and the output end of the plate-type solenoid valve is connected to the lower surface of the second sealing cover plate. The storage silo stores calcium hydroxide powder, the two sets of first and second sealing cover plates seal the rectangular holes on the reaction chamber to reduce the volatilization of harmful gases, the rectangular holes on the reaction chamber facilitate cleaning and maintenance, and the plate-type solenoid valve controls the discharge of calcium hydroxide powder from the storage silo, thus improving the practicality of the device.

[0009] Preferably, the device also includes a reducing joint and a vibration motor. A reducing joint is connected to the output end of the plate solenoid valve. The lower end face of the reducing joint extends to the lower end face of the second sealing cover plate, and the lower end face of the reducing joint is elongated. A set of vibration motors is installed on the left and right sides of the upper end face of the second sealing cover plate. When the two sets of vibration motors are turned on, the power is transmitted to the second sealing cover plate and the storage silo to drive the storage silo to vibrate. This causes the calcium hydroxide powder in the storage silo to be discharged into the reaction tank through the reducing joint. The reducing joint ensures that the calcium hydroxide powder is evenly distributed during the falling process, reducing the possibility of concentrated falling and clumping that affects the mixing efficiency, thus improving the practicality of the device.

[0010] Preferably, the device also includes a second geared motor, a screw, and a solenoid valve. A semi-circular groove is provided at the bottom of the reaction chamber, and the screw is installed in the semi-circular groove. The second geared motor is installed on the lower right end face of the reaction chamber, and the output end of the second geared motor is connected to the screw. A pipe is provided on the lower left end face of the reaction chamber, and the screw extends into the pipe on the lower left end face of the reaction chamber. A solenoid valve is installed on the left side of the pipe. When the second geared motor is turned on, power is transmitted to the screw to drive the screw to rotate. The rotating screw sends the sediment at the bottom of the reaction chamber out through the pipe on the lower left end face of the reaction chamber. The opening and closing of the pipe is controlled by the solenoid valve, which reduces the labor intensity and processing difficulty required for the operator to process the sediment in the reaction chamber and improves the practicality of the device.

[0011] Preferably, the auxiliary device includes a U-shaped slide rail, a counterweight plate, a filter screen, and a sealing plug. A drain port is located at the lower left end of the reaction chamber, above the solenoid valve, and a valve is installed on the drain port. A U-shaped slide rail is located on the left end of the reaction chamber, allowing the counterweight plate to slide up and down within the U-shaped slide rail. A filter screen is installed on the counterweight plate, covering the drain port area of ​​the reaction chamber. A circular hole is located at the upper left end of the reaction chamber. A corrosion-resistant rope is connected to the upper end of the counterweight plate, extending through the circular hole at the top of the reaction chamber to the outside of the reaction chamber and connecting to the sealing plug. The sealing plug seals the circular hole. The U-shaped slide rail limits the lifting and lowering of the counterweight plate. The filter screen filters the discharged liquid, reducing sediment discharged with the liquid. When the filter screen becomes clogged, affecting the liquid discharge rate, or when rapid drainage is required, the operator can use the sealing plug to pull the counterweight plate upwards, removing it from the drain port area.

[0012] Preferably, the device also includes a horizontal plate and a cleaning brush. A horizontal plate is provided in the middle of the U-shaped slide rail groove, and a cleaning brush is installed on the left end face of the horizontal plate. By dragging the counterweight plate upward, the filter screen moves up and down, thereby enabling the cleaning brush to assist in cleaning the surface of the filter screen, which improves the practicality of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the mixing device stirs and mixes the liquid during the neutralization process, thereby increasing the neutralization reaction rate of the equipment; the regulating device uniformly releases calcium hydroxide powder to neutralize and regulate the pH value of the wastewater; and the auxiliary device filters the wastewater after neutralization treatment during discharge, thereby reducing the amount of precipitated particles discharged with the wastewater and improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a first cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model;

[0017] Figure 4 This is a partially enlarged structural schematic diagram of the present invention;

[0018] The following are labels in the attached diagram: 1. Reaction chamber; 2. First geared motor; 3. Spiral blade; 4. Conical spiral blade; 5. Rotating shaft; 6. First sealing cover plate; 7. Second sealing cover plate; 8. Storage silo; 9. Plate solenoid valve; 10. Reducing joint; 11. Vibrating motor; 12. Second geared motor; 13. Screw; 14. Solenoid valve; 15. U-shaped slide rail groove; 16. Counterweight plate; 17. Filter screen; 18. Sealing plug; 19. Horizontal plate; 20. Cleaning brush. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0020] Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the regulating device is installed on the mixing device, and the auxiliary device is installed on the mixing device;

[0021] First, the plate solenoid valve 9 is opened to pre-release the calcium hydroxide powder in the storage bin 8 into the reaction tank 1. Then, the waste liquid is added into the reaction tank 1. Next, the first geared motor 2 is turned on to transmit power to the spiral blade 3, which drives the spiral blade 3 to rotate. The rotating spiral blade 3 lifts the calcium hydroxide precipitate at the bottom of the reaction tank 1 upward and mixes it with the wastewater. At the same time, depending on the acidity of the waste liquid, it is selected whether to continue releasing calcium hydroxide powder. After the waste liquid treatment is completed, the waste liquid is discharged from the waste liquid port on the reaction tank 1. The impurities in the waste liquid are filtered through the filter screen 17. Then, the second geared motor 12 is turned on to transmit power to the screw 13, which drives the screw 13 to rotate. The rotating screw 13 sends the precipitate at the bottom of the reaction tank 1 out through the pipe at the lower left end of the reaction tank 1.

[0022] The mixing device includes a reaction chamber 1, a first reduction motor 2, a spiral blade 3 and a conical spiral blade 4. A set of first reduction motors 2 are installed on the left and right sides of the upper end face of the reaction chamber 1 respectively. The output end of the first reduction motor 2 extends through the upper end face of the reaction chamber 1 into the interior of the reaction chamber 1 and connects with the spiral blade 3. The lower part of the spiral blade 3 is set as a conical spiral blade 4.

[0023] The regulating device includes a rotating shaft 5, a first sealing cover plate 6, a second sealing cover plate 7, a storage bin 8, and a plate-type solenoid valve 9. A set of rectangular holes are respectively provided on the left, right, and middle parts of the upper end face of the reaction tank 1. The two sets of first sealing cover plates 6 on the left and right and the set of second sealing cover plates 7 in the middle are respectively installed in the rectangular holes through a set of rotating shafts 5. An external waste liquid pipe is provided on the first sealing cover plate 6. A storage bin 8 is installed on the second sealing cover plate 7. A plate-type solenoid valve 9 is provided at the lower part of the storage bin 8. The output end of the plate-type solenoid valve 9 is connected to the lower end face of the second sealing cover plate 7.

[0024] It also includes a reducing connector 10 and a vibration motor 11. The output end of the plate solenoid valve 9 is connected to the reducing connector 10. The lower end face of the reducing connector 10 extends to the lower end face of the second sealing cover plate 7, and the lower end face of the reducing connector 10 is long and narrow. A set of vibration motors 11 are installed on the left and right sides of the upper end face of the second sealing cover plate 7 respectively.

[0025] It also includes a second geared motor 12, a screw 13 and a solenoid valve 14. A semi-circular groove is provided at the bottom of the reaction chamber 1, and the screw 13 is installed in the semi-circular groove. The second geared motor 12 is installed at the lower right end face of the reaction chamber 1. The output end of the second geared motor 12 is connected to the screw 13. A pipe is provided at the lower left end face of the reaction chamber 1. The screw 13 extends into the pipe at the lower left end face of the reaction chamber 1. The solenoid valve 14 is installed on the left side of the pipe.

[0026] The auxiliary device includes a U-shaped slide rail 15, a counterweight plate 16, a filter screen 17, and a sealing plug 18. A drain port is provided at the lower part of the left end face of the reaction chamber 1. The drain port is located above the solenoid valve 14 and a valve is provided on the drain port. A U-shaped slide rail 15 is provided on the left end face of the reaction chamber 1. The counterweight plate 16 can be inserted into the U-shaped slide rail 15 and slide up and down. A filter screen 17 is provided on the counterweight plate 16 and covers the drain port area of ​​the reaction chamber 1. A circular hole is provided at the upper part of the left end face of the reaction chamber 1. A corrosion-resistant rope is connected to the upper end face of the counterweight plate 16. The corrosion-resistant rope passes through the circular hole at the upper part of the reaction chamber 1 and extends to the outside of the reaction chamber 1 to connect with the sealing plug 18. The sealing plug 18 can be inserted into the circular hole of the reaction chamber 1 to seal the circular hole.

[0027] It also includes a horizontal plate 19 and a cleaning brush 20. The horizontal plate 19 is set in the middle of the U-shaped slide rail groove 15, and the cleaning brush 20 is installed on the left end face of the horizontal plate 19. The liquid in the neutralization process is stirred and mixed by the mixing device to improve the neutralization reaction rate of the equipment. The calcium hydroxide powder is uniformly released by the regulating device to neutralize and regulate the pH value of the wastewater. The wastewater discharge process after neutralization is filtered by the auxiliary device to reduce the amount of sediment particles discharged with the wastewater and improve the practicality of the device.

[0028] like Figures 1 to 4 As shown, this utility model discloses a high-sulfate dicarboxylic acid wastewater treatment device. During operation, the plate-type solenoid valve 9 is first opened to pre-release calcium hydroxide powder from the storage silo 8 into the reaction tank 1. Then, waste liquid is added to the reaction tank 1. Next, the first reduction motor 2 is activated to transmit power to the spiral blades 3, causing them to rotate. The rotating spiral blades 3 lift the calcium hydroxide precipitate at the bottom of the reaction tank 1 upwards and mix it with the wastewater. Simultaneously, depending on the acidity of the waste liquid, the device selects whether to continue releasing calcium hydroxide powder. After waste liquid treatment is completed, the waste liquid is discharged from the waste liquid outlet on the reaction tank 1. Impurities in the waste liquid are filtered through the filter screen 17. Then, the second reduction motor 12 is activated to transmit power to the screw 13, causing it to rotate. The rotating screw 13 then sends the precipitate at the bottom of the reaction tank 1 out through the pipe at the lower left end of the reaction tank 1.

[0029] The first reduction motor 2, the second reduction motor 12, the solenoid valve 14, and the vibration motor 11 of the high sulfate dicarboxylic acid wastewater treatment device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-sulfate dibasic acid wastewater treatment device; characterized by, The system includes a mixing device, an adjusting device, and an auxiliary device. The adjusting device is installed on the mixing device, and the auxiliary device is installed on the mixing device. The mixing device includes a reaction tank (1), a first geared motor (2), a spiral blade (3), and a conical spiral blade (4). A set of first geared motors (2) are installed on the left and right sides of the upper end face of the reaction tank (1). The output end of the first geared motor (2) extends through the upper end face of the reaction tank (1) and into the interior of the reaction tank (1) to connect with the spiral blade (3). The lower part of the spiral blade (3) is set as a conical spiral blade (4). The adjusting device includes a rotating shaft (5), a first sealing cover plate (6), a second sealing cover plate (7), a storage bin (8), and a plate solenoid valve (9). A set of rectangular holes are respectively provided on the left, right, and middle parts of the upper end face of the reaction tank (1). The two sets of first sealing cover plates (6) on the left and right sides and the set of second sealing cover plates (7) in the middle are respectively installed in the rectangular holes through a set of rotating shafts (5). An external waste liquid pipe is provided on the first sealing cover plate (6), and a storage bin (8) is installed on the second sealing cover plate (7). The lower part of the storage silo (8) is equipped with a plate solenoid valve (9), the output end of which is connected to the lower end face of the second sealing cover (7); the auxiliary device includes a U-shaped slide rail groove (15), a counterweight plate (16), a filter screen (17) and a sealing plug (18). The lower part of the left end face of the reaction box (1) is equipped with a drain port, which is located above the solenoid valve (14). A valve is installed on the drain port. The left end face of the reaction box (1) is equipped with a U-shaped slide rail groove (15), and the counterweight plate (16) can be inserted into it. The counterweight plate (16) is equipped with a filter screen (17) which covers the drain port area of ​​the reaction chamber (1). A circular hole is provided on the upper part of the left end face of the reaction chamber (1). A corrosion-resistant rope is connected to the upper end face of the counterweight plate (16). The corrosion-resistant rope passes through the circular hole at the top of the reaction chamber (1) and extends to the outside of the reaction chamber (1) to connect with the sealing plug (18). The sealing plug (18) can be plugged into the circular hole of the reaction chamber (1) to seal the circular hole.

2. A high-sulfate dibasic acid wastewater treatment apparatus as claimed in claim 1, characterized by, It also includes a reducing connector (10) and a vibration motor (11). The output end of the plate solenoid valve (9) is connected to the reducing connector (10). The lower end face of the reducing connector (10) extends to the lower end face of the second sealing cover plate (7). The lower end face of the reducing connector (10) is long and narrow. A set of vibration motors (11) are installed on the left and right sides of the upper end face of the second sealing cover plate (7).

3. The high-sulfate dicarboxylic acid wastewater treatment device as described in claim 2, characterized in that, It also includes a second geared motor (12), a screw (13) and a solenoid valve (14). A semi-circular groove is provided at the bottom of the reaction chamber (1), and a screw (13) is installed in the semi-circular groove. The second geared motor (12) is installed at the lower right end face of the reaction chamber (1). The output end of the second geared motor (12) is connected to the screw (13). A pipe is provided at the lower left end face of the reaction chamber (1). The screw (13) extends into the pipe at the lower left end face of the reaction chamber (1). A solenoid valve (14) is installed on the left side of the pipe.

4. The high-sulfate dicarboxylic acid wastewater treatment device as described in claim 3, characterized in that, It also includes a horizontal plate (19) and a cleaning brush (20). The horizontal plate (19) is provided in the middle of the U-shaped slide rail groove (15), and the cleaning brush (20) is installed on the left end face of the horizontal plate (19).

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