PDS advanced oxidation unit for sewage treatment

Abstract

The utility model discloses a PDS advanced oxidation device for sewage treatment, relates to the technical field of sewage treatment equipment, and specifically is a PDS advanced oxidation device for sewage treatment, comprising a tank body for treating sewage and a storage box for containing a persulfate solution, wherein the inner side wall of the tank body is fixedly connected with a baffle group and a filter plate in sequence from top to bottom, and the baffle group and the filter plate divide the inner cavity of the tank body into an oxidation chamber, a filter chamber, and a precipitation chamber in sequence from top to bottom; the persulfate solution in the oxidation chamber is electrically activated by a discharge member in a stirring component, and the persulfate electrical activation can promote the persulfate to generate free radicals under mild conditions to meet the effect of removing pollutants in the sewage; when a motor drives a guide tube to rotate, the guide tube drives a stirring blade to stir the liquid in the oxidation chamber to accelerate the mixing of the persulfate solution and the sewage, so that the sewage and the persulfate solution are fully mixed, and the degradation of organic pollutants in the sewage is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a PDS advanced oxidation device for sewage treatment. Background Art

[0002] As pollutants entering the environment become increasingly complex, the emergence and development of advanced oxidation technology with hydroxyl radicals (OH·) as the main active species has been promoted. Compared with other traditional oxidation methods, the main characteristics of advanced oxidation technology are strong oxidation ability, low selectivity, fast reaction rate, mild reaction conditions, and no need for high temperature and high pressure. Traditional advanced oxidation technology uses OH· as the main active substance to degrade pollutants. Persulfate advanced oxidation technology is a technology developed in recent years that uses SO4 - · A new advanced oxidation technology for degrading pollutants with main active species. Among them, persulfate includes peroxymonosulfate and peroxydisulfate, usually referring to the latter. Persulfate is a common oxidant, mainly sodium salt, potassium salt and ammonium salt. The three are similar in structure and all have OO bonds. The activation of persulfate can be achieved in many ways, including thermal activation, light activation, ultrasonic activation, microwave activation, electrical activation, metal ion activation, metal element activation, carbon material activation, organic matter activation, etc. These activation methods can improve the oxidation ability of persulfate and accelerate the degradation process of organic pollutants.

[0003] In the published Chinese patent application, the publication number is CN220012383U, and the patent name is: a persulfate catalytic oxidation wastewater treatment device. This prior art is to degrade organic pollutants by adopting the above principle. This prior art includes a wastewater treatment box, a wastewater primary treatment chamber is opened at the bottom of the wastewater treatment box, a partition is installed on the top of the wastewater treatment box, a sedimentation plate is installed at the lower end of the inner wall of the wastewater treatment box, a filter plate is installed on the top of the sedimentation plate, a catalyst storage box is installed on the top of the wastewater treatment box, and catalyst injection pipes are installed on three sides of the catalyst storage box respectively, a limiting sleeve is installed at the top of the wastewater treatment box, a rotating disk that can rotate along the limiting sleeve is installed in the limiting sleeve, an interface is opened on the catalyst storage box and the limiting sleeve, a rotating drug discharge port is installed on the rotating disk, a discharge part is installed on both sides of the middle of the top of the partition, a rotating drug mixing component is installed on the partition, a liquid guide component is distributed on the wastewater primary treatment chamber of the wastewater treatment box, and a sewage pipe is installed at the bottom of the wastewater primary treatment chamber at the bottom of the wastewater treatment box.

[0004] Although, the prior art injects wastewater into the wastewater treatment box through the wastewater injection pipe, filters and precipitates the sewage through the sedimentation plate and the filter plate, and injects the precipitated wastewater into the top of the partition in the wastewater treatment box through the liquid guide tube and the liquid extraction part, and starts the motor to drive the catalytic mixing plate and the rotating rod to rotate to mix the catalyst with the wastewater to accelerate the catalysis. However, when the prior art is specifically implemented, after the motor drives the turntable to rotate, the rotating medicine outlet is gradually connected with the interface, so that the persulfate solution in the storage box flows into the wastewater treatment box through the rotating medicine outlet and the interface. Because there is a certain gap between the turntable and the interface, the rotating medicine outlet on the turntable is always in a connected state with the interface, so that the persulfate solution is always in a downward flowing state, and the prior art cannot effectively control the amount of persulfate solution added to the wastewater, so that the persulfate solution content in the wastewater is too high. The impact of excessive persulfate in water: First, it causes waste of reagents and increases the cost of wastewater treatment. Second, it affects the stable operation of the subsequent biochemical treatment system.

[0005] In summary, the existing problems in the prior art are: the inflow of persulfate solution cannot be effectively controlled, resulting in a high content of persulfate solution in water. In order to solve the problems in the prior art, this case is proposed to solve them. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides a PDS advanced oxidation device for sewage treatment, which solves the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sewage treatment PDS advanced oxidation device, including a tank body for treating sewage, a storage box for containing a persulfate solution, the storage box is fixedly installed on the top of the tank body, the inner side wall of the tank body is fixedly connected with a baffle group and a filter plate from top to bottom, the baffle group and the filter plate divide the inner cavity of the tank body from top to bottom into an oxidation chamber, a filtration chamber, and a precipitation chamber; a stirring component is arranged on the baffle group and the bottom wall of the storage box, the stirring component includes a motor, a guide tube, a discharge component and a control component for controlling the inflow of the persulfate solution, the upper end of the guide tube passes through the bottom wall of the storage box and the two rotate The lower end of the guide tube is rotatably connected to the partition group, the output shaft end of the motor is coaxially fixedly connected to the lower end of the guide tube, a plurality of confluence holes are provided on the outer wall of the guide tube, the persulfate solution in the storage box flows into the oxidation chamber through the guide tube, and the discharge member is arranged in the oxidation chamber; the control component comprises a baffle, a sliding block, and a push rod, a reciprocating thread groove is provided on the outer wall of the upper end of the guide tube, and the sliding block is threadedly connected to the guide tube through the reciprocating thread groove; the push rod passes through the bottom wall of the storage box, the upper end of the push rod is fixedly connected to the baffle, and the lower end of the push rod is fixedly connected to the sliding block, and the baffle is located above the upper end port of the guide tube.

[0010] Optionally, a wastewater inlet pipe and a drain pipe are fixedly installed on the outer wall of the tank body, respectively, the wastewater inlet pipe is connected to the filter chamber, and the drain pipe is connected to the oxidation chamber; the sedimentation chamber is connected to the oxidation chamber; and a sewage valve is fixedly installed at the lower end of the tank body.

[0011] Optionally, a water delivery component is fixedly mounted on the outer wall of the tank body, the medium inflow end of the water delivery component is connected to the sedimentation chamber, and the medium outflow end of the water delivery component is connected to the oxidation chamber.

[0012] Optionally, the water delivery component includes a water pump and a liquid guide tube, the water pump is fixedly mounted on the outer wall of the tank body, one end of the liquid guide tube is connected to the medium inlet end of the water pump, the other end of the liquid guide tube is connected to the sedimentation chamber, and the medium outlet end of the water pump is connected to the oxidation chamber.

[0013] Optionally, the partition group is composed of two parallel partitions, the outer circumferential edge of the partition is fixedly connected to the inner wall of the tank body, and the motor is arranged between the two partitions.

[0014] Optionally, the guide tube is in the shape of a straight tube, and a plurality of stirring blades are fixedly connected to the outer wall of the guide tube.

[0015] Optionally, the flow guide pipe is in a curved tube shape, a stirring plate is fixedly connected to the outer wall of the flow guide pipe, and a plurality of leakage holes are formed on the stirring plate.

[0016] Optionally, a solution perfusion pipe is provided on the side wall of the storage box.

[0017] (III) Beneficial effects

[0018] The utility model provides a PDS advanced oxidation device for sewage treatment, which has the following beneficial effects:

[0019] 1. The sewage treatment PDS advanced oxidation device, through the setting of the stirring component, has the effect of controlling the inflow of persulfate solution and stirring the persulfate solution with water. The motor drives the guide tube to rotate, and the rotation of the guide tube drives the control component to move up and down. The baffle in the control component intermittently blocks or opens the upper end port of the guide tube. When the upper end port of the guide tube is opened, the persulfate solution in the storage box flows into the oxidation chamber through the guide tube, so that the persulfate solution is mixed with the filtered sewage. Compared with the prior art, the baffle intermittently blocks or opens the upper end port of the guide tube, thereby controlling the amount of persulfate solution added, avoiding excessive persulfate solution content in the sewage, and achieving the purpose of effectively controlling the inflow of persulfate solution.

[0020] 2. The PDS advanced oxidation device for sewage treatment has the effect of stirring and mixing the persulfate solution and water by setting a stirring component. The persulfate solution in the oxidation chamber is electrically activated by the discharge component in the stirring component. The persulfate electrical activation can promote the persulfate to produce free radicals under mild conditions to meet the effect of removing pollutants in sewage. When the motor drives the guide tube to rotate, the guide tube drives the stirring blades to stir the liquid in the oxidation chamber to accelerate the mixing of the persulfate solution and sewage, so that the sewage and the persulfate solution are fully mixed, and the degradation of organic pollutants in the sewage is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the PDS advanced oxidation device for sewage treatment of the utility model;

[0023] Figure 2 This is a cross-sectional structural schematic diagram of Example 1 of the PDS advanced oxidation device for sewage treatment of the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 It is a schematic cross-sectional view of the second embodiment of the PDS advanced oxidation device for sewage treatment according to the utility model.

[0026] In the figure: 1. tank body; 101. oxidation chamber; 102. filtration chamber; 103. sedimentation chamber; 2. storage box; 3. sealed box door; 4. solution perfusion pipe; 5. wastewater inlet pipe; 6. water pump; 7. liquid guide pipe; 8. sewage valve; 9. motor; 10. partition; 11. filter plate; 12. discharge component; 13. liquid discharge pipe; 14. guide pipe; 15. stirring blade; 16. baffle; 19. reciprocating thread groove; 20. sliding block; 21. stirring plate; 22. guide rod; 23. sleeve; 24. push rod; 25. limit block. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indications or implications.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0029] For example, see Figures 1 to 3The utility model provides a technical solution: a PDS advanced oxidation device for sewage treatment, comprising a tank body 1 for treating sewage, a storage box 2 for containing a persulfate solution, the storage box 2 being fixedly mounted on the top of the tank body 1, and the inner side wall of the tank body 1 being fixedly connected with a baffle group and a filter plate 11 in sequence from top to bottom, the baffle group and the filter plate 11 dividing the inner cavity of the tank body 1 into an oxidation chamber 101, a filtration chamber 102, and a precipitation chamber 103 in sequence from top to bottom. A wastewater inlet pipe 5 and a drain pipe 13 are fixedly mounted on the outer side wall of the tank body 1, respectively, the wastewater inlet pipe 5 is connected to the filtration chamber 102, and the drain pipe 13 is connected to the oxidation chamber 101. The precipitation chamber 103 is connected to the oxidation chamber 101. A sewage discharge valve 8 is fixedly mounted on the lower end of the tank body 1. A solution perfusion pipe 4 is arranged on the side wall of the storage box 2. A sealed box door 3 is provided on the side wall of the tank body 1 and near the filter chamber 102 . The sealed box door 3 is used to facilitate the staff to clean the solid dirt and the like in the filter chamber 102 .

[0030] The storage tank 2 is used to hold the persulfate solution. The filter chamber 102 is used to filter the sewage. The sedimentation chamber 103 is used to precipitate the filtered sewage. The wastewater flows into the filter chamber 102 through the wastewater inlet pipe 5, and the sewage flows into the sedimentation chamber 103 after being filtered by the filter plate 11. The sewage is further precipitated in the sedimentation chamber 103, and the solid precipitate produced by the precipitation is discharged from the tank body 1 through the sewage valve 8. The sewage after precipitation in the sedimentation chamber 103 flows into the oxidation chamber 101. The drain pipe 13 is used to discharge the liquid in the oxidation chamber 101. The solution perfusion pipe 4 is used to inject the persulfate solution into the storage tank 2.

[0031] A stirring component is provided on the bottom wall of the partition group and the storage box 2, and the stirring component includes a motor 9, a guide pipe 14, a discharge component 12, and a control component for controlling the inflow of the persulfate solution. The upper end of the guide pipe 14 passes through the bottom wall of the storage box 2 and the two are rotatably connected. The guide pipe 14 is connected to the inside of the storage box 2, and the lower end of the guide pipe 14 is rotatably connected to the partition group. The output shaft end of the motor 9 is coaxially fixedly connected to the lower end of the guide pipe 14. A plurality of confluence holes are provided on the outer wall of the guide pipe 14. The persulfate solution in the storage box 2 flows into the oxidation chamber 101 through the guide pipe 14, and the discharge component 12 is arranged in the oxidation chamber 101. The guide pipe 14 is in a straight tube shape, and a plurality of stirring blades 15 are fixedly connected to the outer wall of the guide pipe 14.

[0032] The stirring component is used to guide the persulfate solution into the oxidation chamber 101, to stir the liquid in the oxidation chamber 101, and to control the inflow of the persulfate solution into the oxidation chamber 101. After the motor 9 is started, the guide pipe 14 is driven to rotate, and the guide pipe 14 drives each stirring blade 15 to rotate, and the stirring blade 15 stirs the water in the oxidation chamber 101. The persulfate solution in the storage tank 2 flows into the oxidation chamber 101 through the internal flow channel of the guide pipe 14 and each confluence hole, thereby achieving mixing of the persulfate solution and the sewage.

[0033] Persulfate solution is mainly used in wastewater treatment to degrade organic pollutants through advanced oxidation technology. Its core principle is to use the highly active free radicals generated by persulfate under specific conditions, such as sulfate radicals (SO4 - ·) and hydroxyl radicals (·OH), which have extremely strong oxidizing ability and can effectively degrade organic pollutants in water, and even mineralize them into harmless small molecules, such as carbon dioxide and water. The persulfate solution in the oxidation chamber 101 is electroactivated by the discharge member 12 in the stirring component. The electroactivation can promote the persulfate to produce free radicals under mild conditions to meet the effect of removing pollutants in sewage. The discharge member 12 includes electrodes, battery packs, etc. The electrodes can be one of graphite felt, titanium platinum (Ti / Pt), boron doped diamond (BDD), polytetrafluoroethylene (PTFE)-carbon, etc. The electrode is arranged in the oxidation chamber 101, the battery pack is arranged outside the tank body 1, and the battery pack is electrically connected to the electrode. The battery pack (referring to the power supply) can use a DC power supply or a pulse power supply. In the electroactivation process, the redox reaction on the electrode surface is a key step, which can promote the activation of persulfate and accelerate the generation of free radicals.

[0034] The control assembly is composed of a spoiler 16, a sliding block 20, a push rod 24, and a guide rod 22. A reciprocating thread groove 19 is provided on the outer wall of the upper end of the guide tube 14, and the sliding block 20 is threadedly connected to the guide tube 14 through the reciprocating thread groove 19. The push rod 24 passes through the bottom wall of the storage box 2, the upper end of the push rod 24 is fixedly connected to the spoiler 16, and the lower end of the push rod 24 is fixedly connected to the sliding block 20. The spoiler 16 is located above the upper end port of the guide tube 14.

[0035] The upper end of the guide rod 22 is fixedly connected to the lower surface of the storage box 2, the middle part of the guide rod 22 penetrates the sliding block 20 and the two are slidably connected, and the lower end of the guide rod 22 is fixedly connected to the limit block 25. A sleeve 23 is penetrated on the bottom wall of the storage box 2, and the top rod 24 penetrates the sleeve 23 and the two are slidably connected. After the motor 9 is started, it drives the guide tube 14 to rotate, and the guide tube 14 pushes the sliding block 20 threadedly connected thereto to move up and down. When the sliding block 20 moves up and down, it pushes the top rod 24 to move up and down, and the top rod 24 pushes the baffle 16 to move up and down. After the baffle 16 rises, it no longer blocks the upper end port of the guide tube 14, so that the persulfate in the storage box 2 flows into the oxidation chamber 101 through the guide tube 14.

[0036] Specifically, the partition plate group is composed of two partition plates 10 arranged in parallel, the outer circumferential edge of the partition plate 10 is fixedly connected to the inner wall of the tank body 1 , and the motor 9 is arranged between the two partition plates 10 .

[0037] The two partitions 10 are used to separate a placement space for the motor 9 to prevent the motor 9 from directly contacting the liquid. At the same time, a heat dissipation hole for dissipating heat for the motor 9 is provided on the side wall of the tank body 1.

[0038] For example 2, please refer to Figure 4 The difference between this embodiment and the first embodiment is that a water delivery component is fixedly mounted on the outer wall of the tank body 1, the medium inflow end of the water delivery component is connected to the sedimentation chamber 103, and the medium outflow end of the water delivery component is connected to the oxidation chamber 101. The water delivery component includes a water pump 6 and a liquid guide tube 7. The water pump 6 is fixedly mounted on the outer wall of the tank body 1, one end of the liquid guide tube 7 is connected to the medium inflow end of the water pump 6, the other end of the liquid guide tube 7 is connected to the sedimentation chamber 103, and the medium outflow end of the water pump 6 is connected to the oxidation chamber 101.

[0039] The water delivery component is used to deliver the settled sewage in the sedimentation chamber 103 to the oxidation chamber 101. After the water pump 6 is started, the sewage in the sedimentation chamber 103 is extracted through the liquid guide tube 7 and delivered to the oxidation chamber 101.

[0040] The flow guide pipe 14 is in a curved pipe shape, and a stirring plate 21 is fixedly connected to the outer wall of the flow guide pipe 14 . The stirring plate 21 is provided with a plurality of drainage holes.

[0041] The flow guide tube 14 is in a curved tube shape, and the flow guide tube 14 stirs the liquid in the oxidation chamber 101 during the rotation process; the flow guide tube 14 drives the stirring plate 21 to rotate and stir the liquid.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. PDS advanced oxidation device for sewage treatment, characterized by: The invention comprises a tank body (1) for treating sewage, and a storage box (2) for containing a persulfate solution, wherein the storage box (2) is fixedly mounted on the top of the tank body (1), and the inner side wall of the tank body (1) is fixedly connected with a partition plate group and a filter plate (11) in sequence from top to bottom, and the partition plate group and the filter plate (11) divide the inner cavity of the tank body (1) into an oxidation cavity (101), a filter cavity (102), and a precipitation cavity (103) in sequence from top to bottom; A stirring component is provided on the bottom wall of the partition group and the storage box (2), and the stirring component comprises a motor (9), a flow guide pipe (14), a discharge component (12) and a control component for controlling the inflow of the persulfate solution. The upper end of the flow guide pipe (14) passes through the bottom wall of the storage box (2) and the two are rotatably connected. The lower end of the flow guide pipe (14) is rotatably connected to the partition group. The output shaft end of the motor (9) is coaxially fixedly connected to the lower end of the flow guide pipe (14). A plurality of confluence holes are provided on the outer wall of the flow guide pipe (14). The persulfate solution in the storage box (2) flows into the oxidation chamber (101) through the flow guide pipe (14). The discharge component (12) is arranged in the oxidation chamber (101); The control assembly comprises a baffle (16), a sliding block (20), and a push rod (24); a reciprocating thread groove (19) is provided on the outer wall of the upper end of the flow guide tube (14); the sliding block (20) is threadedly connected to the flow guide tube (14) via the reciprocating thread groove (19); the push rod (24) passes through the bottom wall of the storage box (2); the upper end of the push rod (24) is fixedly connected to the baffle (16); the lower end of the push rod (24) is fixedly connected to the sliding block (20); the baffle (16) is located above the upper end port of the flow guide tube (14).

2. The PDS advanced oxidation device for sewage treatment according to claim 1 is characterized in that: A wastewater inlet pipe (5) and a liquid discharge pipe (13) are fixedly mounted on the outer side wall of the tank body (1), respectively; the wastewater inlet pipe (5) is in communication with the filter chamber (102), and the liquid discharge pipe (13) is in communication with the oxidation chamber (101); the sedimentation chamber (103) is in communication with the oxidation chamber (101); and a sewage discharge valve (8) is fixedly mounted at the lower end of the tank body (1).

3. The PDS advanced oxidation device for sewage treatment according to claim 1 is characterized in that: A water delivery component is fixedly mounted on the outer wall of the tank body (1); the medium inflow end of the water delivery component is in communication with the sedimentation chamber (103); and the medium outflow end of the water delivery component is in communication with the oxidation chamber (101).

4. The PDS advanced oxidation device for sewage treatment according to claim 3 is characterized in that: The water delivery component comprises a water pump (6) and a liquid guide tube (7); the water pump (6) is fixedly mounted on the outer wall of the tank body (1); one end of the liquid guide tube (7) is in communication with a medium inflow end of the water pump (6); the other end of the liquid guide tube (7) is in communication with a sedimentation chamber (103); and the medium outflow end of the water pump (6) is in communication with an oxidation chamber (101).

5. The PDS advanced oxidation device for sewage treatment according to claim 1, characterized in that: The partition plate group is composed of two partition plates (10) arranged in parallel, the outer circumference of the partition plate (10) is fixedly connected to the inner side wall of the tank body (1), and the motor (9) is arranged between the two partition plates (10).

6. The PDS advanced oxidation device for sewage treatment according to claim 1, characterized in that: The flow guide tube (14) is in the shape of a straight tube, and a plurality of stirring blades (15) are fixedly connected to the outer wall of the flow guide tube (14).

7. The PDS advanced oxidation device for sewage treatment according to claim 1, characterized in that: The flow guide tube (14) is in the shape of a curved tube, and a stirring plate (21) is fixedly connected to the outer wall of the flow guide tube (14), and a plurality of leakage holes are provided on the stirring plate (21).

8. The PDS advanced oxidation device for sewage treatment according to claim 1, characterized in that: A solution perfusion pipe (4) is provided on the side wall of the storage box (2).

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