Reaction device for treating hypophosphorous acid by potassium permanganate method
By employing a segmented support plate, a gravity-flow addition pipe, and a stirring device in the hypophosphite wastewater treatment unit, the problem of uneven mixing of calcium hydroxide solution was solved, achieving efficient wastewater treatment and sedimentation, and meeting environmental emission requirements.
Patent Information
- Application Number
- CN202423058934.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In the existing technology for treating hypophosphite wastewater, uneven addition and mixing of calcium hydroxide solution leads to poor precipitation and affects treatment efficiency.
A reaction device for treating hypophosphite using potassium permanganate was designed. It employs multiple segmented support plates arranged in an X-shape, combined with a gravity-flow addition pipe and a stirring device to prevent calcium hydroxide solution precipitation. A lifting and lowering mixing and stirring component ensures uniform mixing of the solution.
The addition and mixing of calcium hydroxide solution were improved, which increased wastewater treatment efficiency, ensured sedimentation effect, and met environmental emission standards.
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Figure CN223747587U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wastewater treatment technical field, concretely is a kind of reaction device of potassium permanganate method treatment hypophosphorous acid. BACKGROUND
[0002] The principle of potassium permanganate method treatment hypophosphorous acid is that hypophosphite is converted into orthophosphate by oxidation reaction, and then removed by precipitation, potassium permanganate has strong oxidation ability, can convert hypophosphite into phosphate completely, the removal effect is remarkable, and the generated phosphate can be further treated by conventional chemical phosphorus removal method, which meets the environmental protection requirements.
[0003] The treatment process is to add potassium permanganate to wastewater containing hypophosphite, and carry out oxidation reaction, the pH value and the dosage of oxidant need to be controlled during the reaction process to ensure sufficient oxidation and avoid excessive by-products, after the oxidation of wastewater, the pH value is adjusted (usually by adding lime and other alkaline substances), and the phosphate will form a precipitate, which is separated from the wastewater by flocculation and precipitation, and the precipitated wastewater is treated further in a comprehensive tank to ensure that the discharge standard is met.
[0004] When hypophosphite-containing wastewater is mixed and precipitated with calcium hydroxide, a certain amount of calcium hydroxide solution is added to the oxidized phosphate wastewater solution, and stirring reaction is carried out, in this process, calcium hydroxide and phosphate form calcium hydroxyl phosphate precipitate, thereby achieving phosphorus removal, finally, the generated precipitate is removed by filtration, so that the phosphorus content in the wastewater meets the discharge standard, since the hypophosphite wastewater treatment tank is large, currently, the calcium hydroxide solution is directly added to the hypophosphite wastewater treatment tank and stirred by a single stirring device, the stirring and mixing time is long, the calcium hydroxide solution is prone to precipitation when transported through horizontal conveying pipe, the mixing effect is not good, which leads to slow subsequent precipitation and affects the hypophosphite wastewater treatment efficiency. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of reaction device of potassium permanganate method treatment hypophosphorous acid to solve the problems raised in the above background.
[0006] To achieve the above object, the utility model provides the following technical scheme:
[0007] A kind of reaction device of potassium permanganate method treatment hypophosphorous acid, including hypophosphorous acid sewage treatment tank, the top of the hypophosphorous acid sewage treatment tank is provided with multiple division support plates, the middle part of the division support plate is provided with calcium hydroxide solution adding device for calcium hydroxide solution addition, the inside of the calcium hydroxide solution adding device is provided with anti-precipitation agitator, multiple division support plates are arranged in X-shaped intersection, and lifting mixing agitator assembly is arranged in the hypophosphorous acid sewage treatment tank at the bottom of each division support plate.
[0008] The calcium hydroxide solution adding device comprises an adding column, a self-flow adding pipe and a containing hopper, the adding column is located at the top of intersections of the plurality of division support plates, the containing hopper is located at the top of the adding column, the bottom of the containing hopper is connected with the adding column in a through manner, the stirring device is located inside the containing hopper, the self-flow adding pipes are arranged in an inclined structure on the outer walls around the adding column, one end of each self-flow adding pipe is connected with the adding column in a through manner, and the end of each self-flow adding pipe away from the adding column is connected with the top of the division support plate close to the adding column.
[0009] As a preferred scheme of the present application, the stirring device comprises a support vertical plate located at the top of the containing hopper and a conveying dragon fixed inside the containing hopper at the bottom of the support vertical plate through a bearing, and the top of the conveying dragon is connected with a stirring motor at the top of the support vertical plate in a penetrating manner.
[0010] As a preferred scheme of the present application, the conveying dragon is an upward conveying type stirring device.
[0011] As a preferred scheme of the present application, the lifting and mixing stirring assembly comprises an electric lifting telescopic rod, a stirring shaft and stirring blades, the stirring blades are spirally connected on the stirring shaft, a mixing motor is connected with the top of the stirring shaft through a shaft coupling, the electric lifting telescopic rod is fixed at the top of each division support plate, the bottom of each electric lifting telescopic rod is connected with the mixing motor in a penetrating manner through the division support plate, and a waterproof cover is arranged outside the mixing motor.
[0012] As a preferred scheme of the present application, each self-flow adding pipe is arranged in an inclined structure of 30-45 degrees, and each self-flow adding pipe is arranged to be deep into the hypophosphorous acid sewage treatment tank through a connecting pipe close to the outlet end.
[0013] As a preferred scheme of the present application, the containing hopper is connected with an external flowing calcium hydroxide solution inlet.
[0014] Compared with the prior art, the present application has the following beneficial effects:
[0015] In view of the problems in the background art, the present application designs a plurality of key components and structures to optimize the adding and mixing process of the calcium hydroxide solution, so as to improve the precipitation effect and improve the wastewater treatment efficiency.
[0016] By setting the upper movement type stirring device inside the containing bucket, the calcium hydroxide solution inside the containing bucket is stirred by the stirring device, and the calcium hydroxide solution is mixed while being stirred, the upper movement type stirring prevents the calcium hydroxide solution from precipitating downward due to its own gravity, ensures that the solution remains in a uniform state, and further mixes the calcium hydroxide solution while being stirred, so that it is more uniform, and the reaction efficiency is improved;
[0017] The gravity flow adding pipe is arranged in an inclined structure of 30-45 degrees, and the calcium hydroxide solution can be added into the sewage treatment tank in a gravity flow manner through the gravity flow adding pipe, and the gravity flow addition can save equipment power consumption while preventing precipitation inside the gravity flow adding pipe and ensuring smooth flow of the solution.
[0018] The lifting and mixing stirring assembly is distributed at multiple positions of the sewage treatment tank, so that the wastewater and the chemical solution are fully mixed, and the stirring position and depth can be adjusted as needed through the design of the electric lifting telescopic rod and the stirring shaft, so that different treatment requirements are met.
[0019] The utility model will be explained in detail below in combination with the specific embodiments and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the overall perspective view of the utility model;
[0021] Figure 2 It is the top schematic view of the hypophosphorous acid sewage treatment tank of the utility model;
[0022] Figure 3 It is the structure schematic view of the calcium hydroxide solution adding device and the stirring device of the utility model;
[0023] Figure 4 It is the connection schematic view of the stirring shaft and the stirring blade of the utility model.
[0024] In the drawing: 1, hypophosphorous acid sewage treatment tank; 11, split support plate; 2, calcium hydroxide solution adding device; 21, adding column; 22, gravity flow adding pipe; 23, containing bucket; 3, stirring device; 31, support vertical plate; 32, conveying dragon; 33, stirring motor; 4, lifting and mixing stirring assembly; 41, electric lifting telescopic rod; 42, stirring shaft; 43, stirring blade. DETAILED DESCRIPTION
[0025] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to the related drawings, and several embodiments of the utility model are given in the drawings, but the utility model can be realized by different forms, and is not limited to the embodiments described in the text, on the contrary, these embodiments are provided to make the disclosed content of the utility model more thorough and comprehensive. EMBODIMENT
[0026] The various devices in the present application file all adopt conventional models in the prior art, and the control mode is controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which is common knowledge in the art, so the present application will not be explained in detail.
[0027] Please refer to Figures 1-4 The utility model provides a technical scheme: a reaction device for treating secondary phosphite by potassium permanganate method, which comprises a secondary phosphite sewage treatment tank 1, a plurality of split support plates 11 are arranged on the top of the secondary phosphite sewage treatment tank 1, a calcium hydroxide solution adding device 2 for adding calcium hydroxide solution is arranged above the middle of the split support plates 11, an anti-deposition stirring device 3 is arranged in the calcium hydroxide solution adding device 2, the split support plates 11 are arranged in an X-shaped cross mode, and a lifting and mixing stirring assembly 4 is arranged in the secondary phosphite sewage treatment tank 1 at the bottom of each split support plate 11; the calcium hydroxide solution adding device 2 comprises an adding column 21, a self-flow adding pipe 22 and a holding hopper 23, the adding column 21 is arranged at the top of the intersection of the split support plates 11, the holding hopper 23 is arranged at the top of the adding column 21, the holding hopper 23 is connected with the adding column 21 in a penetrating mode at the bottom, the stirring device 3 is arranged in the holding hopper 23, the self-flow adding pipes 22 are arranged in an inclined mode on the outer walls around the adding column 21, one end of each self-flow adding pipe 22 is connected with the adding column 21 in a penetrating mode, and the other end of each self-flow adding pipe 22 is connected with the top of the split support plate 11 close to the adding column 21; the stirring device 3 comprises a support vertical plate 31 arranged at the top of the holding hopper 23 and a conveying dragon 32 fixed to the bottom of the support vertical plate 31 in the holding hopper 23 through a bearing, and the top of the conveying dragon 32 penetrates through the support vertical plate 31 and is connected with a stirring motor 33 arranged at the top of the support vertical plate 31; the conveying dragon 32 is an upward conveying type stirring device, and the holding hopper 23 is connected with an external flowing calcium hydroxide solution inlet.
[0028] It should be noted that, in the embodiment, the secondary phosphite sewage treatment tank 1 serves as a core container of the whole treatment process and is responsible for containing the secondary phosphite wastewater to be treated, the split support plates 11 are arranged on the top of the sewage treatment tank 1 in an X-shaped cross mode, which is helpful for dispersing the solution flow path, enhancing the mixing effect and facilitating the installation of the mixing device.
[0029] The calcium hydroxide solution adding device 2 is arranged above the middle of the split support plates 11 and comprises the adding column 21, the self-flow adding pipes 22 and the holding hopper 23, the calcium hydroxide solution is conveyed into the holding hopper 23 through an external pipeline, and then flows into the sewage treatment tank 1 through the self-flow adding pipes 22 in an even mode, and the self-flow adding pipes 22 are arranged in an inclined mode, which is helpful for preventing the solution from depositing in the pipeline.
[0030] The stirring device 3 is located inside the holding hopper 23, and the conveying dragon 32 is driven by the stirring motor 33 to perform upward conveying stirring, so as to prevent the calcium hydroxide solution from precipitating during the adding process, and promote the sufficient mixing of the solution and the wastewater. The stirring is performed at the same time as the mixing of the calcium hydroxide solution, and the upward stirring prevents the calcium hydroxide solution from precipitating downward due to its own gravity, so as to ensure that the solution remains in a uniform state. At the same time of the stirring, the calcium hydroxide solution is further mixed to make it more uniform, thereby improving the reaction efficiency;
[0031] The calcium hydroxide solution is added to the sewage treatment tank 1 through the self-flow adding pipe 22. Potassium permanganate KMnO4 has strong oxidizing property under acidic conditions, and can oxidize hypophosphite NaH2PO2 to phosphate such as Na2HPO4. In this process, potassium permanganate is reduced to manganese dioxide MnO2, and the color changes from purple red to colorless or light yellow. In this process, the generated phosphate can be further converted into insoluble calcium phosphate Ca3(PO4)2 precipitate by adding calcium salt such as calcium hydroxide Ca(OH)2, so as to realize the removal of phosphorus.
[0032] Please refer to Figure 1 、 2 and 4, the lifting and mixing stirring assembly 4 includes an electric lifting telescopic rod 41, a stirring shaft 42 and stirring blades 43. The stirring blades 43 are spirally connected to the stirring shaft 42, and the stirring shaft 42 is connected with a mixing motor at the top through a shaft coupling. The electric lifting telescopic rod 41 is fixed at the top of each divided support plate 11, and the bottom of each electric lifting telescopic rod 41 penetrates the divided support plate 11 and is connected with the mixing motor. A waterproof cover is arranged outside the mixing motor. Each self-flow adding pipe 22 is arranged in a 30-45 degree inclined structure, and each self-flow adding pipe 22 is deep into the hypophosphorous acid sewage treatment tank 1 through the connecting pipe close to the outlet end.
[0033] It should be noted that in the embodiment, the lifting and mixing stirring assembly 4 is distributed at multiple positions of the sewage treatment tank 1, and the stirring blades 43 are driven by the electric lifting telescopic rod 41 and the stirring shaft 42 to perform lifting and mixing stirring, so as to ensure that the wastewater and the chemical solution are fully mixed, and improve the reaction efficiency and treatment effect;
[0034] The calcium hydroxide solution is transported to the containing hopper 23 at the top of the intersection of the split support plates 11 through external pipelines, the solution flows into the sewage treatment tank through the self-flow adding pipe 22 at the bottom of the containing hopper 23, the stirring device 3 inside the containing hopper works to prevent the calcium hydroxide solution from precipitating during the adding process, the conveying dragon 32 is fixed at the bottom of the support vertical plate 31 through bearings and is connected with the stirring motor 33 at the top, ensuring that the solution remains in a uniform state, the self-flow adding pipe 22 is arranged in an inclined structure of 30-45 degrees, so that the solution can be uniformly distributed in the sewage treatment tank 1, each self-flow adding pipe 22 is deeply inserted into the sewage treatment tank through the connecting pipe near the outlet end, further promoting the uniform distribution of the solution, the lifting and mixing stirring assembly works to further mix inside the sewage treatment tank, the stirring blade spiral 43 is connected to the stirring shaft 42 and is driven by the mixing motor, ensuring that the wastewater and the chemical solution are fully mixed, in this process, the calcium hydroxide reacts with the phosphate to generate calcium hydroxyl phosphate precipitate, after sufficient mixing and reaction, the phosphorus in the wastewater is removed in the form of precipitate, the treated water is further purified through filtration or other methods to reach the discharge standard.
[0035] The working process of the utility model is as follows:
[0036] In use, the calcium hydroxide solution is transported to the containing hopper 23 at the top of the intersection of the split support plates 11 through external pipelines, the solution flows into the sewage treatment tank through the self-flow adding pipe 22 at the bottom of the containing hopper 23, the stirring device 3 inside the containing hopper works to prevent the calcium hydroxide solution from precipitating during the adding process, the conveying dragon 32 is fixed at the bottom of the support vertical plate 31 through bearings and is connected with the stirring motor 33 at the top, ensuring that the solution remains in a uniform state, the self-flow adding pipe 22 is arranged in an inclined structure of 30-45 degrees, so that the solution can be uniformly distributed in the sewage treatment tank 1, each self-flow adding pipe 22 is deeply inserted into the sewage treatment tank through the connecting pipe near the outlet end, further promoting the uniform distribution of the solution, the lifting and mixing stirring assembly works to further mix inside the sewage treatment tank, the stirring blade spiral 43 is connected to the stirring shaft 42 and is driven by the mixing motor, ensuring that the wastewater and the chemical solution are fully mixed, in this process, the calcium hydroxide reacts with the phosphate to generate calcium hydroxyl phosphate precipitate, after sufficient mixing and reaction, the phosphorus in the wastewater is removed in the form of precipitate, the treated water is further purified through filtration or other methods to reach the discharge standard.
[0037] The utility model is described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as the method concept and technical scheme of the utility model are adopted for this kind of non-essential improvement or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.
Claims
1. A reaction device for treating hypophosphorous acid by potassium permanganate method, comprising a hypophosphorous acid sewage treatment tank (1), characterized in that: The hypophosphorous acid sewage treatment tank (1) is provided with a plurality of split support plates (11) on the top, a calcium hydroxide solution adding device (2) for adding calcium hydroxide solution is arranged above the middle of the split support plate (11), an anti-deposition stirring device (3) is arranged inside the calcium hydroxide solution adding device (2), the split support plates (11) are arranged in X-shaped intersection, and a lifting and mixing stirring assembly (4) is arranged inside the hypophosphorous acid sewage treatment tank (1) at the bottom of each split support plate (11). The calcium hydroxide solution adding device (2) comprises an adding column (21), a self-flow adding pipe (22) and a containing hopper (23), the adding column (21) is located at the top of the intersection of the split support plates (11), the containing hopper (23) is located at the top of the adding column (21), the containing hopper (23) is connected with the adding column (21) through the bottom, the stirring device (3) is arranged inside the containing hopper (23), the self-flow adding pipe (22) is arranged in an inclined structure on the outer wall around the adding column (21), one end of each self-flow adding pipe (22) is connected with the adding column (21) through, and the end, away from the adding column (21), of each self-flow adding pipe (22) is connected with the top of the split support plate (11) close to the adding column (21).
2. The reaction device for treating secondary phosphorous acid by potassium permanganate method according to claim 1, characterized in that: The stirring device (3) comprises a support vertical plate (31) located at the top of the containing hopper (23) and a conveying dragon (32) fixed on the bottom of the support vertical plate (31) inside the containing hopper (23) through a bearing, and the top of the conveying dragon (32) penetrates the support vertical plate (31) and is connected with a stirring motor (33) at the top of the support vertical plate (31).
3. The reaction device for treating secondary phosphorous acid by potassium permanganate method according to claim 2, characterized in that: The conveying dragon (32) is an upper conveying type stirring device.
4. The reaction device for treating secondary phosphorous acid by potassium permanganate method according to claim 1, characterized in that: The lifting and mixing stirring assembly (4) comprises an electric lifting telescopic rod (41), a stirring shaft (42) and stirring blades (43), the stirring blades (43) are spirally connected on the stirring shaft (42), a mixing motor is connected with the top of the stirring shaft (42) through a shaft coupling, the electric lifting telescopic rod (41) is fixed on the top of each split support plate (11), the bottom of each electric lifting telescopic rod (41) penetrates the split support plate (11) and is connected with the mixing motor, and a waterproof cover is arranged outside the mixing motor.
5. The reaction apparatus for treating secondary phosphorous acid by potassium permanganate method according to claim 1, characterized in that: Each self-flow adding pipe (22) is arranged in an inclined structure of 30-45 degrees, and each self-flow adding pipe (22) is connected with a connecting pipe close to the outlet end and penetrates into the hypophosphorous acid sewage treatment tank (1).
6. The reaction device for treating secondary phosphorous acid by potassium permanganate method according to claim 1, characterized in that: The containing hopper (23) is connected with an external flowing calcium hydroxide solution inlet.