Novel industrial sewage PDS strong oxidation treatment device

Abstract

The utility model discloses a novel industrial sewage PDS strong oxidation treatment device, and relates to the technical field of sewage treatment equipment, in particular to a novel industrial sewage PDS strong oxidation treatment device which comprises a filter box, an oxidation box and a settling box which are communicated with one another in sequence, the sewage in the oxidation tank is stirred through the stirring part; a persulfate solution is contained in a persulfate solution box, and the persulfate solution is conveyed into an oxidation box through a flow dividing pipe, so that the persulfate solution is in contact with sewage; the stirring part drives the flow dividing pipe to lift and move in the oxidation box while stirring the sewage, namely, the flow dividing pipe lifts and moves in the sewage, so that a persulfate solution is more comprehensively contacted and mixed with the sewage, and the mixing effect of the persulfate solution and the sewage is greatly improved; the persulfate solution is subjected to an oxidation-reduction reaction, a catalytic oxidation reaction and the like in the sewage, so that the aim of purifying the sewage is fulfilled.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically a novel industrial wastewater PDS strong oxidation treatment device. Background Technology

[0002] With the acceleration of industrialization, wastewater treatment has become an important issue in the field of environmental protection. Traditional wastewater treatment methods suffer from low efficiency and unsatisfactory treatment results when treating wastewater containing recalcitrant organic matter. In recent years, advanced oxidation technologies have gradually attracted attention due to their highly efficient oxidation capabilities. Among them, persulfate (PDS) advanced oxidation technology, which can generate highly oxidizing sulfate free radicals, has shown good degradation effects on organic pollutants and has broad application prospects.

[0003] However, existing PDS advanced oxidation wastewater treatment devices still have some shortcomings in practical applications. For example, although a PDS / PMS advanced oxidation wastewater treatment device disclosed in patent CN202411462284.6 achieves deep degradation of wastewater through specific spray components and catalyst layer design, insufficient mixing still exists during the mixing process of sulfate solution and wastewater. Insufficient contact between the sulfate solution and wastewater leads to suboptimal efficiency in oxidation-reduction and catalytic oxidation reactions, thus affecting the overall wastewater treatment effect. Furthermore, existing devices fail to fully utilize the purification potential of the sulfate solution in the coordination of stirring and liquid delivery components, making it impossible to achieve efficient and rapid degradation of organic pollutants in wastewater and failing to meet increasingly stringent wastewater treatment standards.

[0004] To address the problems existing in the prior art, this utility model proposes a novel industrial wastewater PDS strong oxidation treatment device. By optimizing the design of the stirring and dispensing components, it aims to ensure thorough mixing of the sulfate solution with the wastewater, thereby improving wastewater treatment efficiency and effectiveness. This effectively solves the technical problems of insufficient mixing and poor purification in existing technologies, providing a more efficient and reliable solution for the wastewater treatment field. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a novel industrial wastewater PDS strong oxidation treatment device, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: A novel industrial wastewater PDS strong oxidation treatment device includes a filter box, an oxidation box, and a sedimentation box connected sequentially to each other. The oxidation box is equipped with a stirring component and two liquid delivery components. The two liquid delivery components are slidably disposed within the oxidation box and located above and below the stirring component, respectively. The stirring component is drively connected to the liquid delivery components, and the stirring component drives the two liquid delivery components to move longitudinally within the oxidation box. The stirring component includes a servo motor and a stirring rod. Both ends of the stirring rod are rotatably connected to the inner wall of the oxidation box, and the output shaft of the servo motor is fixedly connected to one end of the stirring rod. The liquid delivery component includes a persulfate solution tank, a diversion pipe, and a diversion box. The diversion pipe is slidably disposed on the inner wall of the oxidation box, and multiple liquid flow holes are opened on the wall of the diversion pipe. The persulfate solution tank is disposed on the outer wall of the oxidation box, and the outlet end of the persulfate solution tank is connected to the diversion box through a guide pipe. The outlet end of the diversion box is connected to the diversion pipe. The stirring rod is drively connected to the diversion pipe.

[0009] Optionally, the filter box is fixedly installed on the upper side wall of the oxidation box. The filter box has an inlet at the top. A collection box is fixedly connected to the side wall of the filter box. An inclined conveyor is provided inside the filter box, and the conveyor is located below the inlet. The conveyor penetrates the side wall of the filter box, and one end of the conveyor is located above the collection box.

[0010] Optionally, the filter box is connected to the oxidation box via a first water pipe, the sedimentation box is connected to the oxidation box via a second water pipe, and the sedimentation box is equipped with a drain pipe; the filter box is equipped with a filter plate inside, and the oxidation box is equipped with an exhaust channel at the top.

[0011] Optionally, the infusion component further includes a slide rail, a spring, and a wedge block. The slide rail is longitudinally fixedly installed on the inner wall of the oxidation tank. The spring is disposed inside the slide rail. An installation block is fixedly connected to the diversion tube. The wedge block is fixedly connected to the installation block. One end of the wedge block is sloped. The diversion tube is slidably connected to the slide rail through the installation block. One end of the spring is fixedly connected to the inner wall of the slide rail, and the other end of the spring is fixedly connected to the installation block.

[0012] Optionally, a wedge-shaped rotating wheel is fitted on the outer wall of the stirring rod and the two are fixedly connected. The end of the wedge-shaped rotating wheel is inclined and abuts against the end of the wedge block.

[0013] (III) Beneficial Effects

[0014] This utility model provides a novel PDS strong oxidation treatment device for industrial wastewater, which has the following beneficial effects:

[0015] This novel industrial wastewater PDS strong oxidation treatment device, through the coordinated arrangement of a stirring component and two liquid delivery components, achieves the effect of thoroughly mixing persulfate solution with wastewater. The stirring component agitates the wastewater in the oxidation tank; the persulfate solution is contained in a persulfate solution tank and transported to the oxidation tank through a distribution pipe, allowing the persulfate solution to come into contact with the wastewater. Simultaneously, the stirring component drives the distribution pipe to move up and down within the oxidation tank, ensuring more comprehensive contact and mixing of the persulfate solution with the wastewater. This significantly improves the mixing effect, allowing the persulfate solution to undergo oxidation-reduction reactions and catalytic oxidation reactions in the wastewater, thereby achieving the purpose of wastewater purification. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a novel industrial wastewater PDS strong oxidation treatment device according to the present invention.

[0018] Figure 2 This is a partial cross-sectional view of the exhaust channel of a novel industrial wastewater PDS strong oxidation treatment device according to the present invention.

[0019] Figure 3 This is a partial cross-sectional view of a novel industrial wastewater PDS strong oxidation treatment device according to this utility model.

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point C;

[0021] Figure 5 This is a three-dimensional structural diagram of the wedge-shaped rotor of a novel industrial wastewater PDS strong oxidation treatment device according to this utility model.

[0022] In the diagram: 1. Oxidation tank; 2. Mounting plate; 3. Collection tank; 4. Conveying component; 5. Water inlet; 6. Filter tank; 7. First water pipe; 8. Persulfate solution tank; 9. Exhaust channel; 10. Sedimentation tank; 11. Second water pipe; 12. Tank leg; 13. Servo motor; 14. Filter plate; 15. Stirring rod; 16. Diverter pipe; 17. Base plate; 18. Mounting block; 21. Slide rail; 22. Guide pipe; 23. Diverter box; 24. Wedge-shaped wheel; 25. Spring; 26. Wedge-shaped block; 28. Top rod; 31. Baffle. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a wastewater treatment PDS advanced oxidation device, comprising a filter box 6, an oxidation box 1, and a sedimentation box 10 connected sequentially to each other. The oxidation box 1 is equipped with a stirring component and two liquid delivery components. The two liquid delivery components are slidably disposed within the oxidation box 1 and are located above and below the stirring component, respectively. The stirring component and the liquid delivery components are connected by a transmission mechanism, and the stirring component drives the two liquid delivery components to move longitudinally within the oxidation box 1. A box leg 12 is fixedly connected to the bottom of the oxidation box 1, and a base plate 17 is fixedly connected to the bottom of the box leg 12. The sedimentation box 10 is fixedly mounted on the base plate 17.

[0026] The system includes a filter tank 6 for filtering solid impurities from the wastewater. An oxidation tank 1 is used to introduce a persulfate solution into the wastewater, allowing the persulfate solution to react with organic pollutants, thus purifying the wastewater. A sedimentation tank 10 is used to settle the reacted wastewater, achieving sedimentation purification. A stirring component agitates the wastewater within the oxidation tank 1 to accelerate the mixing of the persulfate solution and the wastewater. Two infusion components introduce the persulfate solution into the wastewater in the oxidation tank 1, mixing it with the wastewater and utilizing the reaction between the persulfate solution and organic pollutants to purify the wastewater. Simultaneously, the stirring component drives the two infusion components to move longitudinally within the oxidation tank 1, enhancing the mixing and contact between the persulfate solution and the wastewater.

[0027] The stirring component includes a servo motor 13 and a stirring rod 15. Both ends of the stirring rod 15 are rotatably connected to the inner sidewall of the oxidation tank 1, and the output shaft end of the servo motor 13 is fixedly connected to one end of the stirring rod 15.

[0028] Multiple blades are fixedly connected to the outer wall of the stirring rod 15. After the servo motor 13 is started, it drives the stirring rod 15 to rotate, and the stirring rod 15 drives each blade to rotate and stir the sewage.

[0029] The infusion assembly includes a persulfate solution tank 8, a diversion tube 16, and a diversion box 23. The diversion tube 16 is slidably mounted on the inner wall of the oxidation tank 1, and multiple flow holes are formed in the wall of the diversion tube 16. The persulfate solution tank 8 is mounted on the outer wall of the oxidation tank 1. The outlet end of the persulfate solution tank 8 is connected to the diversion box 23 through a guide tube 22, and the outlet end of the diversion box 23 is connected to the diversion tube 16. A stirring rod 15 is drivenly connected to the diversion tube 16.

[0030] The persulfate solution tank 8 is equipped with a control valve at its outlet to control the outflow rate of the persulfate solution. The persulfate solution tank 8 is used to hold the persulfate solution. The persulfate solution in the tank 8 flows sequentially through the guide pipe 22 and the distribution box 23 before entering the distribution pipe 16. Subsequently, the persulfate solution flows through various liquid flow holes on the distribution pipe 16 into the wastewater in the oxidation tank 1. After mixing with the wastewater, the persulfate solution reacts with the organic pollutants in the wastewater, thereby purifying the wastewater. During rotation, the stirring rod 15 drives the distribution pipe 16 to slide along the inner wall of the oxidation tank 1, causing the distribution pipe 16 to move up and down within the oxidation tank 1.

[0031] Persulfate solution undergoes various chemical reactions with wastewater, thereby purifying the wastewater. The following are some of the main chemical reactions and purification principles:

[0032] Redox reactions. Organic matter oxidation: Sulfate ions (SO4²⁻) in persulfate solutions can be reduced under certain conditions, while organic matter in wastewater is oxidized. For example, in advanced oxidation processes, sulfate ions can accept electrons and be reduced to thiosulfate ions (S₂O₃²⁻) or bisulfate ions (HSO₄⁻), while organic matter in wastewater such as benzene, phenols, and aldehydes is oxidized and decomposed into harmless substances such as carbon dioxide and water, thereby reducing the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) of wastewater.

[0033] Oxidation of heavy metal ions: For some heavy metal ions in wastewater, such as ferrous ions (Fe²⁺) and manganese ions (Mn²⁺), persulfate solution can oxidize them into higher valence states of iron ions (Fe³⁺) and manganese ions (MnO⁻). These higher valence metal ions usually have lower solubility and are more easily removed from wastewater by methods such as precipitation, thereby reducing the content of heavy metals in wastewater and reducing harm to the environment.

[0034] Catalytic oxidation reaction. Catalytic activation of PDS: In wastewater treatment, sulfate ions in persulfate solutions can act as catalysts to catalyze the activation of oxidants such as persulfate (PDS). For example, in the advanced oxidation process of PDS, sulfate ions can promote the decomposition of PDS, generating a large number of strong oxidizing free radicals such as sulfate radicals (·SO4⁻) and hydroxyl radicals (·OH). These free radicals have higher redox potentials and can more effectively attack organic pollutants and microorganisms in wastewater, oxidizing and decomposing them into harmless substances, thereby improving the efficiency and effectiveness of wastewater treatment.

[0035] Catalytic oxidation of organic matter: Persulfate solution itself can also act as a catalyst to catalytically oxidize organic matter in wastewater. For example, under certain conditions, sulfate ions can catalytically oxidize organic matter such as alcohols and aldehydes in wastewater, converting them into corresponding acids and other substances that are more easily biodegradable, thereby improving the biodegradability of wastewater and creating favorable conditions for subsequent biological treatment.

[0036] Hydrolysis reaction. Acidity / alkalinity adjustment: Persulfate solution undergoes hydrolysis in water, generating small amounts of hydrogen ions (H⁺) and hydroxide ions (OH⁻), thus regulating the acidity / alkalinity of wastewater. For example, sodium sulfate solution hydrolyzes in water to produce a small amount of hydrogen ions, making the solution weakly acidic. This can neutralize alkaline wastewater, lowering the pH to a more suitable treatment range. Conversely, for acidic wastewater, the hydroxide ions produced by the hydrolysis of persulfate solution can neutralize some of the acidity, reducing the acidity of the wastewater.

[0037] Affecting Metal Ion Precipitation: The hydrolysis reaction of persulfate solution also affects the precipitation of metal ions in wastewater. When wastewater contains metal ions such as calcium ions (Ca²⁺) and magnesium ions (Mg²⁺), the hydroxide ions produced by the hydrolysis of persulfate solution can combine with these metal ions to form hydroxide precipitates, such as calcium hydroxide [Ca(OH)₂] and magnesium hydroxide [Mg(OH)₂], thereby removing metal ions from the wastewater, reducing water hardness, and improving wastewater quality.

[0038] The principle of catalytic activation of persulfate (PDS) by persulfate solution utilizes sulfate ions (SO42−) as a catalyst to lower the activation energy of PDS decomposition, accelerating its decomposition to generate highly oxidizing sulfate radicals (⋅SO4−) and hydroxyl radicals (⋅OH). These radicals possess high redox potentials, enabling them to efficiently oxidize organic pollutants in wastewater, decomposing them into harmless small molecules, thereby achieving deep purification of wastewater. Sulfate ions significantly improve the decomposition efficiency of PDS and the amount of radicals generated through adsorption, providing reaction sites, and stabilizing intermediate products, thus enhancing the wastewater treatment effect.

[0039] Specifically, the filter box 6 is fixedly installed on the upper side wall of the oxidation box 1. An inlet 5 is provided at the top of the filter box 6. A collection box 3 is fixedly connected to one side wall of the filter box 6. An inclined conveyor 4 is installed inside the filter box 6, located below the inlet 5. The conveyor 4 penetrates one side wall of the filter box 6, with one end positioned above the collection box 3. The filter box 6 is connected to the oxidation box 1 via a first water pipe 7, and the sedimentation box 10 is connected to the oxidation box 1 via a second water pipe 11. A drain pipe is installed on the sedimentation box 10. A filter plate 14 is installed inside the filter box 6, and an exhaust channel 9 is provided at the top of the oxidation box 1. A mounting plate 2 is fixedly connected to the upper side wall of the oxidation box 1, and the filter box 6 is fixedly installed on the mounting plate 2.

[0040] Wastewater flows into the filter box 6 through inlet 5, and after filtration, it flows into the oxidation box 1. A conveyor 4 transports solid impurities from the wastewater to the collection box 3. The conveyor 4 includes a conveyor belt, two rotating rollers, and a first motor. The two rotating rollers are rotatably connected to the inner wall of the filter box 6. The conveyor belt is wound around the two rotating rollers, and its outer surface is covered with multiple protrusions. The output shaft of the first motor is connected to one end of one of the rotating rollers. After the first motor starts, it drives the conveyor belt to rotate via the rotating rollers. The conveyor belt pushes the solid impurities falling above it, causing them to fall into the collection box 3. A filter plate 14 filters the wastewater flowing into the oxidation box 1, removing solid impurities. Wastewater in the filter box 6 flows into the oxidation box 1 through a first water pipe 7. Water in the oxidation box 1, after reacting with the sulfate solution, flows into the sedimentation box 10 through a second water pipe 11. An exhaust channel 9 balances the internal pressure of the oxidation box 1, preventing excessive gas buildup.

[0041] The infusion assembly also includes a slide rail 21, a spring 25, and a wedge-shaped block 26. The slide rail 21 is longitudinally fixedly installed on the inner wall of the oxidation tank 1. The spring 25 is disposed inside the slide rail 21. A mounting block 18 is fixedly connected to the diversion tube 16. The wedge-shaped block 26 is fixedly connected to the mounting block 18. One end of the wedge-shaped block 26 is sloped. The diversion tube 16 is slidably connected to the slide rail 21 through the mounting block 18. One end of the spring 25 is fixedly connected to the inner wall of the slide rail 21, and the other end of the spring 25 is fixedly connected to the mounting block 18. A wedge-shaped rotating wheel 24 is fitted onto the outer wall of the stirring rod 15 and the two are fixedly connected. The end of the wedge-shaped rotating wheel 24 is inclined, and the end of the wedge-shaped rotating wheel 24 abuts against the end of the wedge-shaped block 26.

[0042] The stirring rod 15 rotates, causing the wedge-shaped wheel 24 to rotate. The inclined surfaces at both ends of the wedge-shaped wheel 24 push the wedge-shaped block 26 to move away from the wedge-shaped wheel 24. The wedge-shaped block 26 causes the mounting block 18 to slide on the slide rail 21. The spring 25 of the slide rail 21 is compressed. At the same time, the mounting block 18 causes the diversion pipe 16 to slide. After the end of the wedge-shaped wheel 24 disengages from the wedge-shaped block 26, the mounting block 18 is reset under the action of the spring 25, thereby realizing the lifting and lowering of the diversion pipe 16.

[0043] A push rod 28 is fixedly connected above the mounting block 18, and a baffle 31 is hinged inside the exhaust channel 9. The push rod 28 is located below the baffle 31. When the mounting block 18 moves up and down, it pushes the push rod 28 up and down. After the push rod 28 rises to its highest point, it pushes the baffle 31 to open. The push rod 28 moves up and down intermittently, thereby causing the baffle 31 to open and close intermittently.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel PDS strong oxidation treatment device for industrial wastewater, characterized in that: The system includes a filter box (6), an oxidation box (1), and a sedimentation box (10) that are connected to each other in sequence. The oxidation box (1) is equipped with a stirring component and two infusion components. The two infusion components are slidably disposed in the oxidation box (1) and are located above and below the stirring component, respectively. The stirring component is connected to the infusion components in a transmission manner. The stirring component drives the two infusion components to move longitudinally inside the oxidation box (1). The stirring component includes a servo motor (13) and a stirring rod (15). The two ends of the stirring rod (15) are rotatably connected to the inner sidewall of the oxidation tank (1), and the output shaft end of the servo motor (13) is fixedly connected to one end of the stirring rod (15). The infusion component includes a persulfate solution tank (8), a diversion pipe (16), and a diversion box (23). The diversion pipe (16) is slidably disposed on the inner wall of the oxidation tank (1). Multiple liquid flow holes are opened on the wall of the diversion pipe (16). The persulfate solution tank (8) is disposed on the outer wall of the oxidation tank (1). The outlet end of the persulfate solution tank (8) is connected to the diversion box (23) through a guide pipe (22). The outlet end of the diversion box (23) is connected to the diversion pipe (16). The stirring rod (15) is drivenly connected to the diversion pipe (16).

2. The novel industrial wastewater PDS strong oxidation treatment device according to claim 1, characterized in that: The filter box (6) is fixedly installed on the upper side wall of the oxidation box (1). The filter box (6) has an inlet (5) at the top. A collection box (3) is fixedly connected to one side wall of the filter box (6). An inclined conveyor (4) is provided inside the filter box (6), and the conveyor (4) is located below the inlet (5). The conveyor (4) penetrates one side wall of the filter box (6), and one end of the conveyor (4) is located above the collection box (3).

3. The novel industrial wastewater PDS strong oxidation treatment device according to claim 2, characterized in that: The filter box (6) is connected to the oxidation box (1) through the first water pipe (7), the sedimentation box (10) is connected to the oxidation box (1) through the second water pipe (11), and the sedimentation box (10) is provided with a drain pipe; the filter box (6) is provided with a filter plate (14) inside, and the oxidation box (1) is provided with an exhaust channel (9) at the top.

4. The novel industrial wastewater PDS strong oxidation treatment device according to claim 1, characterized in that: The infusion component also includes a slide rail (21), a spring (25), and a wedge block (26). The slide rail (21) is longitudinally fixed on the inner wall of the oxidation tank (1). The spring (25) is set inside the slide rail (21). An installation block (18) is fixedly connected to the diversion tube (16). The wedge block (26) is fixedly connected to the installation block (18). One end of the wedge block (26) is sloped. The diversion tube (16) is slidably connected to the slide rail (21) through the installation block (18). One end of the spring (25) is fixedly connected to the inner wall of the slide rail (21), and the other end of the spring (25) is fixedly connected to the installation block (18).

5. The novel industrial wastewater PDS strong oxidation treatment device according to claim 4, characterized in that: The outer wall of the stirring rod (15) is fitted with a wedge-shaped rotating wheel (24) and the two are fixedly connected. The end of the wedge-shaped rotating wheel (24) is inclined and the end of the wedge-shaped rotating wheel (24) abuts against the end of the wedge-shaped block (26).

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