Decoloring oxidation kettle and formaldehyde wastewater treatment device

Abstract

The utility model belongs to the field of wastewater treatment, and particularly discloses a decolorizing oxidation kettle and a formaldehyde wastewater treatment device.The decolorizing oxidation kettle comprises a reaction kettle body, a cover plate detachably connected with the reaction kettle body, a material assembly fixed to the cover plate and stretching into the reaction kettle body, a stirring assembly and a monitoring assembly arranged in the reaction kettle body; the output pipeline is connected with the bottom of the reaction kettle body, and the material assembly is used for introducing formaldehyde wastewater to be treated and a decolorizing and oxidizing agent; the stirring assembly is used for stirring reaction materials in the reaction kettle body; the monitoring assembly is used for monitoring reaction conditions in the reaction kettle body in real time; and the output pipeline is used for discharging the decolorized and oxidized wastewater treatment product. According to the formaldehyde wastewater treatment device, automatic reagent adding and automatic reaction can be achieved, manual feeding is not needed, the workload of operators is reduced, the formaldehyde wastewater treatment efficiency can be effectively improved, meanwhile, reaction conditions can be monitored in real time, repeated sampling detection is not needed, and the treatment efficiency is further improved.

Description

Technical Field

[0001] The present application belongs to the field of wastewater treatment, and more specifically, relates to a decolorization oxidation kettle and a formaldehyde wastewater treatment device. Background Art

[0002] The stiffening agent will produce a lot of formaldehyde wastewater during the production process, which is usually transported to the sewage station for treatment. The existing treatment equipment in the sewage station has a low treatment efficiency for formaldehyde wastewater and cannot meet production needs. Therefore, it is necessary to build a storage tank to store the formaldehyde wastewater, but the storage tank has a greater environmental risk. At the same time, the existing treatment device needs to detect its pH value through multiple sampling during the treatment process to judge the treatment effect, which brings a large workload to the operator. Utility Model Content

[0003] In response to the defects of the prior art or the need for improvement, the present application provides a decolorization oxidation kettle and a formaldehyde wastewater treatment device, which aims to solve the problems of low treatment efficiency and the need for multiple sampling in the existing formaldehyde wastewater treatment devices.

[0004] According to one aspect of the present application, a decolorization and oxidation kettle is provided, which specifically includes a reactor body, a cover plate detachably connected to the reactor body, a material component and a stirring component fixed on the cover plate and extending into the reactor body, a monitoring component arranged inside the reactor body, and an output pipeline connected to the bottom of the reactor body, wherein the material component is used for introducing formaldehyde wastewater to be treated and a decolorization and oxidation agent; the stirring component is used for stirring the reaction material inside the reactor body; the monitoring component is used for real-time monitoring of the reaction conditions inside the reactor body; and the output pipeline is used for discharging the wastewater treatment product after decolorization and oxidation.

[0005] Compared with the prior art, the above technical scheme conceived by the present application can realize automatic addition of reagents and automatic reaction by setting up material components, stirring components and monitoring components, and there is no need for repeated sampling and testing, which can effectively improve the treatment efficiency of formaldehyde wastewater.

[0006] As further preferred, the material component includes a wastewater inlet pipe, a steam pipe and a plurality of reagent pipes, the wastewater inlet pipe is used to introduce formaldehyde wastewater to be treated, the steam pipe is used to introduce steam to heat the reaction process, and the plurality of reagent pipes are respectively used to introduce a plurality of decolorizing oxidizing agents.

[0007] As further preferred, the plurality of reagent tubes include a lime milk tube, a hydrogen peroxide tube, a flocculant tube, a coagulant tube and a pH adjustment tube, and the input end of each reagent tube is connected to a metering pump.

[0008] As a further preference, the stirring assembly includes a motor, a stirring shaft and one or more stirring teeth, the motor is fixed on the cover plate; the stirring shaft is arranged inside the reactor body and connected to the output shaft of the motor; each of the stirring teeth is spirally arranged in sequence along the axial direction of the stirring shaft.

[0009] As a further preference, the spiral radius of each stirring tooth gradually increases from top to bottom.

[0010] As further preferred, the monitoring component includes a temperature sensor and a pH detection sensor, the temperature sensor is used to detect the temperature of the reaction material, and the pH detection sensor is used to detect the pH of the reaction material.

[0011] As a further preference, a feeding port is provided on the cover plate, and the feeding port is sealed by a switch plate.

[0012] As further preferred, the decolorization oxidation kettle also includes a control box, and the control box is connected to the material component, the stirring component and the monitoring component.

[0013] As a further preference, the reactor body is fixed on a frame platform.

[0014] According to another aspect of the present application, a formaldehyde wastewater treatment device is provided, which specifically includes a pretreatment kettle, a concentration tank, a regulating tank and a filter press respectively connected to the concentration tank, and the above-mentioned decolorization and oxidation kettle, wherein the pretreatment kettle is used to pretreat the formaldehyde wastewater to obtain polysaccharide wastewater and send it to the decolorization and oxidation kettle; the decolorization and oxidation kettle is used to perform decolorization and oxidation treatment and coagulation treatment on the polysaccharide wastewater, and send the generated wastewater treatment product to the concentration tank; the concentration tank is used to perform solid-liquid separation on the wastewater treatment product, and send the upper clear liquid to the regulating tank, and send the lower precipitate to the filter press.

[0015] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art:

[0016] 1. The present application can realize automatic addition of reagents and automatic reaction by arranging material components and stirring components on the decolorization oxidation kettle, without manual loading, reducing the workload of operators, and can effectively improve the treatment efficiency of formaldehyde wastewater, avoiding the use of storage tanks to store formaldehyde wastewater. At the same time, by arranging a monitoring component inside the dehydration oxidation kettle, the reaction conditions can be monitored in real time, without repeated sampling and testing, further improving the treatment efficiency;

[0017] 2. At the same time, the present application adds a steam pipe in the material assembly, which can heat the reaction materials by introducing steam, keep the formaldehyde wastewater in a suitable temperature range, thereby accelerating its reaction speed, shortening the processing time, improving the processing efficiency, and thus improving the daily processing capacity;

[0018] 3. In addition, the present application can realize quantitative addition of reagents by connecting a metering pump to the input end of each reagent tube, thereby further improving work efficiency and treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the decolorization oxidation kettle provided in the embodiment of the present application;

[0020] Figure 2 This is a front view of the decolorization oxidation kettle provided in the embodiment of the present application;

[0021] Figure 3 yes Figure 2 AA view in the figure;

[0022] Figure 4 yes Figure 3 Oblique projection view of

[0023] Figure 5 It is a system block diagram of the formaldehyde wastewater treatment device provided in an embodiment of the present application.

[0024] In all the drawings, the same figure numbers are used to represent the same elements or structures, including: 1-pretreatment kettle, 2-decolorization oxidation kettle, 3-concentration tank, 4-adjustment tank, 5-filter press, 6-frame platform, 7-reactor body, 8-cover plate, 9-switch plate, 10-motor, 11-steam pipe, 12-chemical pipe, 13-wastewater input pipe, 14-output pipeline, 15-stirring teeth, 16-pH detection sensor, 17-temperature sensor, 18-control box, 19-stirring shaft. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] like Figures 1 to 4As shown, the present application provides a decolorization and oxidation kettle, which specifically includes a reactor body 7, a cover plate 8 detachably connected to the reactor body 7, a material component and a stirring component fixed on the cover plate 8 and extending into the reactor body 7, a monitoring component arranged inside the reactor body 7, and an output pipeline 14 connected to the bottom of the reactor body 7. The inner cavity of the reactor body 7 serves as a reaction place for decolorization and oxidation of formaldehyde wastewater, and is sealed by the cover plate 8; the material component is used to pass the formaldehyde wastewater to be treated and the decolorization and oxidation agent; the stirring component is used to stir the reaction materials inside the reactor body 7 to ensure uniform contact of the reaction materials and further improve the reaction rate; the monitoring component is used to monitor the reaction conditions inside the reactor body 7 in real time, so as to avoid multiple sampling and judging the treatment effect during the treatment process, which reduces the workload of the operator on the one hand and effectively improves the treatment efficiency on the other hand; the output pipeline 14 is used to discharge the wastewater treatment product after decolorization and oxidation.

[0027] The present application transforms the decolorization oxidation kettle, and by setting up material components and stirring components, it can realize automatic addition of reagents and automatic reaction, thereby improving the automation level of formaldehyde wastewater treatment, eliminating the need for manual loading, reducing the workload of operators, and effectively improving the treatment efficiency of formaldehyde wastewater. At the same time, by setting up monitoring components, there is no need for repeated sampling and testing, which reduces the workload of operators and further improves the treatment efficiency of formaldehyde wastewater.

[0028] Furthermore, the material component includes a wastewater input pipe 13, a steam pipe 11 and a plurality of reagent pipes 12. The wastewater input pipe 13 is used to introduce formaldehyde wastewater to be treated; the steam pipe 11 is used to introduce steam to heat the reaction process, and a solenoid valve is provided on the steam pipe 11. By setting the steam pipe 11, the formaldehyde wastewater can be kept in a suitable temperature range during the treatment process, thereby accelerating its reaction speed, shortening the treatment time, and improving the treatment efficiency, thereby improving the daily treatment capacity; the plurality of reagent pipes 12 are respectively used to introduce a variety of decolorizing and oxidizing reagents, specifically including lime milk pipes, hydrogen peroxide pipes, flocculant pipes, coagulant pipes and pH adjusting pipes, which are respectively used to add lime milk, hydrogen peroxide, flocculants, coagulants and pH adjusting agents, and the input ends of the respective reagent pipes 12 are connected with metering pumps to control the amount and speed of addition of each reagent, thereby realizing quantitative and automatic addition of reagents.

[0029] Furthermore, the stirring assembly includes a motor 10, a stirring shaft 19 and one or more stirring teeth 15. The motor 10 is fixed on the cover plate 8. The output shaft of the motor 10 passes through the cover plate 8 and is connected to the stirring shaft 19 disposed inside the reactor body 7 to drive the stirring shaft 19 to rotate; each stirring tooth 15 is spirally arranged along the axial direction of the stirring shaft 19 in sequence, and the spiral radius of each stirring tooth 15 gradually increases from top to bottom, so that it can fully stir the reaction materials and improve the reaction efficiency.

[0030] Furthermore, the monitoring component includes a temperature sensor 17 and a pH detection sensor 16. The temperature sensor 17 is used to detect the temperature of the reaction material, and the pH detection sensor 16 is used to detect the pH of the reaction material in real time, so that the reaction progress can be judged in real time, which is convenient for operators to directly obtain information without sampling and testing.

[0031] Furthermore, a feeding port is provided on the cover plate 8, and the feeding port is sealed by a switch plate 9, the switch plate 9 is hinged to the cover plate 8, and when additional material needs to be added, the switch plate 9 can be opened to add material through the feeding port.

[0032] Furthermore, the decolorization and oxidation kettle also includes a control box 18, which is connected to the material component, the stirring component and the monitoring component. The control box 18 is placed on the outer wall of the reactor body 7, and is provided with a digital display module and a control button. The control box 18 is provided with a processor connected to the temperature sensor 17 and the pH detection sensor 16 signal. The processor is electrically connected to the motor 10, the digital display module, the control button, the solenoid valve and the metering pump respectively, and the values ​​detected by the temperature sensor 17 and the pH detection sensor 16 are directly displayed on the digital display module, which is convenient for operators to directly obtain information without sampling and detection.

[0033] Table 1 Temperature and pH value on the treatment effect evaluation record

[0034]

[0035] It can be seen from Table 1 that when the pH value is 7-8 and the temperature is 35±2°C, the reaction time is the shortest and the sewage treatment effect is the best. Therefore, a steam pipe 11 is added to the decolorization reactor to heat the formaldehyde wastewater inside and maintain it at a suitable temperature, which is beneficial to shorten the reaction time, improve the treatment efficiency, and thus enhance the wastewater treatment capacity.

[0036] Furthermore, the reactor body 7 is fixed on the frame platform 6 , and the frame platform 6 is provided with matching holes. The reactor body 7 passes through the holes and is fixedly connected to the frame platform 6 through the extended connecting plates, thereby achieving the fixation of the reactor body 7 .

[0037] like Figure 5As shown, according to another aspect of the present application, a formaldehyde wastewater treatment device is provided, which specifically includes a pretreatment kettle 1, a decolorization and oxidation kettle 2 and a concentration tank 3 connected in sequence by pipelines along the liquid flow direction, and a regulating tank 4 and a filter press 5 respectively connected to the concentration tank 3, the pretreatment kettle 1 is used to pretreat the formaldehyde wastewater to obtain polysaccharide wastewater and send it to the decolorization and oxidation kettle 2; the decolorization and oxidation kettle 2 is used to decolorize and oxidize the polysaccharide wastewater and coagulate it, and send the generated wastewater treatment product to the concentration tank 3, the steam pipe 11 of the decolorization and oxidation kettle 2 is connected to the heating pipeline of the pretreatment kettle 1; the concentration tank 3 is used to perform solid-liquid separation on the wastewater treatment product, and send the upper clear liquid to the regulating tank 4, and the lower precipitate to the filter press 5.

[0038] During operation, the formaldehyde wastewater is first pretreated by the pretreatment kettle 1 to be converted into polysaccharide wastewater. After the pretreatment is completed, lime milk is added to the decolorization oxidation kettle 2 for decolorization, and hydrogen peroxide is added for strong oxidation and degradation of organic matter. The pH value is adjusted to between 7 and 8, and PAC and PAM are added. The mixture is stirred to undergo a coagulation reaction, and the mixture is transported to the concentration tank 3 for solid-liquid separation. The upper clear liquid enters the regulating tank 4, and enters the biochemical system after being treated in the regulating tank 4. The lower precipitate enters the filter press 5, is pressed into a cake shape, and is uniformly treated. The above-mentioned pretreatment kettle 1, the concentration tank 3, the regulating tank 4, and the filter press 5 can directly adopt existing equipment.

[0039] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0040] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection 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 this application can be understood according to specific circumstances.

[0042] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A decolorizing oxidation kettle, characterized in that: The decolorization and oxidation kettle comprises a reactor body (7), a cover plate (8) detachably connected to the reactor body (7), a material component and a stirring component fixed on the cover plate (8) and extending into the reactor body (7), a monitoring component arranged inside the reactor body (7), and an output pipeline (14) connected to the bottom of the reactor body (7), wherein the material component is used for introducing formaldehyde wastewater to be treated and a decolorization and oxidation agent; the stirring component is used for stirring the reaction material inside the reactor body (7); the monitoring component is used for real-time monitoring of the reaction conditions inside the reactor body (7); and the output pipeline (14) is used for discharging the wastewater treatment product after decolorization and oxidation.

2. The decolorizing oxidation kettle according to claim 1, characterized in that: The material component comprises a wastewater input pipe (13), a steam pipe (11) and a plurality of reagent pipes (12); the wastewater input pipe (13) is used to introduce formaldehyde wastewater to be treated; the steam pipe (11) is used to introduce steam to heat the reaction process; and the plurality of reagent pipes (12) are respectively used to introduce a plurality of decolorizing oxidizing reagents.

3. The decolorizing oxidation kettle according to claim 2, characterized in that: The plurality of reagent tubes (12) include a lime milk tube, a hydrogen peroxide tube, a flocculant tube, a coagulant tube and a pH adjustment tube, and the input end of each reagent tube (12) is connected to a metering pump.

4. The decolorizing oxidation kettle according to claim 1, characterized in that: The stirring assembly comprises a motor (10), a stirring shaft (19) and one or more stirring teeth (15); the motor (10) is fixed on the cover plate (8); the stirring shaft (19) is arranged inside the reactor body (7) and connected to the output shaft of the motor (10); and each stirring tooth (15) is spirally arranged in sequence along the axial direction of the stirring shaft (19).

5. The decolorizing oxidation kettle according to claim 4, characterized in that: The spiral radius of each stirring tooth (15) gradually increases from top to bottom.

6. The decolorizing oxidation kettle according to claim 1, characterized in that: The monitoring component comprises a temperature sensor (17) and a pH detection sensor (16), wherein the temperature sensor (17) is used to detect the temperature of the reaction material, and the pH detection sensor (16) is used to detect the pH of the reaction material.

7. The decolorizing oxidation kettle according to claim 1, characterized in that: The cover plate (8) is provided with a feeding port, and the feeding port is sealed by a switch plate (9).

8. The decolorizing oxidation kettle according to any one of claims 1 to 7, characterized in that: The decolorization and oxidation kettle also includes a control box (18), and the control box (18) is connected to the material component, the stirring component and the monitoring component.

9. The decolorizing oxidation kettle according to any one of claims 1 to 7, characterized in that: The reactor body (7) is fixed on the frame platform (6).

10. A formaldehyde wastewater treatment device, characterized in that: The formaldehyde wastewater treatment device comprises a pretreatment kettle (1), a concentration tank (3), a regulating tank (4) and a filter press (5) respectively connected to the concentration tank (3), and a decolorization oxidation kettle (2) as described in any one of claims 1 to 9, wherein the pretreatment kettle (1) is used to pretreat the formaldehyde wastewater to obtain polysaccharide wastewater and send it to the decolorization oxidation kettle (2); the decolorization oxidation kettle (2) is used to decolorize and oxidize the polysaccharide wastewater and coagulate it, and send the generated wastewater treatment product to the concentration tank (3); the concentration tank (3) is used to perform solid-liquid separation on the wastewater treatment product, and send the upper clear liquid to the regulating tank (4), and send the lower precipitate to the filter press (5).

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