A wastewater decolorization and ion exchange device

Abstract

The utility model relates to sewage treatment technical field especially, is a kind of wastewater decolorization and ion exchange device;Including ion exchange mechanism and active carbon adsorption decoloring mechanism, active carbon adsorption decoloring mechanism includes horizontal tank, is installed in the middle part of horizontal tank and holds cylinder, installs the hole screen plate in the both sides of holding cylinder and the first water inlet and outlet assembly and the second water inlet and outlet assembly symmetrically arranged in the both sides of horizontal tank, the first water inlet and outlet assembly and the second water inlet and outlet assembly all include the drain pipe installed in the upper portion of horizontal tank and with the upper portion of horizontal tank intercommunication, the water inlet pipe installed in the lower portion of horizontal tank and with the lower portion of horizontal tank intercommunication, drain valve is installed on drain pipe, water inlet valve is installed on water inlet pipe, ion exchange mechanism is used for the removal of metal ion in sewage. It can improve the uniformity of active carbon particles and wastewater contact, reduce the height of agglomeration, reduce the hardening rate of active carbon particles, improve the adsorption effect, prolong the service life.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater decolorization and ion exchange device. Background Technology

[0002] Wastewater generated during the production of materials such as polyaluminum chloride contains a large amount of metal ions and is yellow in color. In order to ensure that the wastewater meets the discharge standards, it is necessary to remove the metal ions through an ion exchange device and adsorb the pigments in the wastewater through a decolorization device to achieve the purpose of decolorization.

[0003] For example, the utility model patent application with publication number CN220110591U discloses a wastewater decolorization and ion exchange device. The exchange tank is fixedly equipped with a fixed plate and an activated carbon filter layer. Through the ion exchange column and activated carbon filter layer, the device can directly remove residual natural and synthetic water-soluble organic matter, micro-pollutants, and iron ions brought in by the raw materials used in the production of high-purity polyaluminum chloride liquid. It can further reduce the content of heavy metals such as magnesium, mercury, lead, chromium, and cadmium, remove the beer color from the high-purity polyaluminum chloride liquid, and present a colorless and transparent liquid.

[0004] However, the activated carbon filter layer adsorbs a large amount of pigment on the water-facing side and a small amount on the water-repellent side, resulting in uneven adsorption on both sides of the activated carbon filter layer. Furthermore, the activated carbon filter layer is prone to caking when stacked vertically, which in turn affects the adsorption effect and service life of the activated carbon. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a wastewater decolorization and ion exchange device that can improve the uniformity of contact between activated carbon particles and wastewater, reduce the stacking height of activated carbon particle layers, reduce the caking rate of activated carbon particles, improve the adsorption effect, and extend the service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wastewater decolorization and ion exchange device, comprising an ion exchange mechanism and an activated carbon adsorption decolorization mechanism. The activated carbon adsorption decolorization mechanism includes a horizontal tank, a holding cylinder installed in the middle of the horizontal tank, perforated sieve plates installed on both sides of the holding cylinder, and a first inlet / outlet water assembly and a second inlet / outlet water assembly symmetrically arranged on both sides of the horizontal tank. Both the first inlet / outlet water assembly and the second inlet / outlet water assembly include a drain pipe installed on the upper part of the horizontal tank and communicating with the upper part of the horizontal tank, and an inlet water pipe installed on the lower part of the horizontal tank and communicating with the lower part of the horizontal tank. A drain valve is installed on the drain pipe, and an inlet water valve is installed on the inlet water pipe. The ion exchange mechanism is used for the removal of metal ions from wastewater, and the inlet water pipes on the first inlet / outlet water assembly and the second inlet / outlet water assembly are both connected to the outlet end of the ion exchange mechanism.

[0007] Furthermore, a cavity is formed between the inner wall of the container and the perforated sieve plate, the cavity is filled with activated carbon particles, the outer wall of the container fits into the inner wall of the horizontal tank, and the length-to-height ratio of the container is greater than 2.

[0008] Preferably, the container is slidably installed inside the horizontal tank along the radial direction of the horizontal tank. A guide sleeve is fixedly installed in the middle of the horizontal tank, and a spiral groove is provided at the guide sleeve. A roller extending into the spiral groove is installed on the outer wall of the container. Further, the outer wall of the container is slidably sealed to the inner wall of the horizontal tank. The roller is rotatably installed on the container and slidably installed in the spiral groove. The water resistance of the activated carbon particles inside the container should be greater than the lateral frictional resistance borne by the container from the inner wall of the horizontal tank.

[0009] Preferably, it also includes a pressurizing pump, the input end of which is connected to the outlet end of the ion exchange mechanism, and the output end of which is connected to the inlet pipe on the first and second inlet / outlet water components.

[0010] Furthermore, a pressure gauge is installed at the outlet of the pressurizing pump. The water pressure at the pressurizing pump should be sufficient to move the container within the horizontal tank. By selecting an appropriate pressurizing pump, it can be ensured that the water pressure is sufficient to move the container horizontally within the horizontal tank. It should be noted that the water pressure at the outlet of the pressurizing pump should be less than the desorption pressure of the activated carbon particles to avoid the pigments adsorbed by the activated carbon particles from detaching due to excessive water pressure.

[0011] Preferably, both ends of the container are provided with support sliding rings with an outer diameter larger than that of the container, and sealing sliding rings are embedded in the support sliding rings.

[0012] Furthermore, the supporting slip ring can effectively support the container, and the sealing slip ring is used for sliding seal between the supporting slip ring and the inner wall of the horizontal tank. The sealing slip ring is preferably a sealing material with self-lubricating properties, such as graphite or molybdenum disulfide.

[0013] Preferably, the ion exchange mechanism includes an exchange tank, a perforated plate installed at the bottom of the exchange tank, a plurality of filter caps installed on the perforated plate, and an outlet pipe communicating with the bottom of the exchange tank; the exchange tank is equipped with an inlet pipe communicating with the upper part of the exchange tank and a first water distribution pipe assembly communicating with the inlet pipe.

[0014] Furthermore, the outlet end of the water pipe is connected to the inlet pipe on the first and second inlet / outlet components or to the input end of the booster pump; the exchange tank is filled with cation exchange resin.

[0015] Preferably, a second water distribution pipe assembly is installed at the bottom of the exchange tank, and a sewage pipe is provided at the top of the exchange tank.

[0016] Furthermore, the inlet end of the second water distribution pipe assembly is connected to an external pressurized backwash water source.

[0017] Preferably, both ends of the horizontal tank can be detachably installed with blind plates, and the perforated sieve plate can be detachably installed at the end of the container.

[0018] Furthermore, the blind plate is detachably connected to the horizontal tank by bolts, and the perforated sieve plate is detachably connected to the container cylinder by bolts.

[0019] Compared with the prior art, this utility model provides a wastewater decolorization and ion exchange device with the following beneficial effects: In this wastewater decolorization and ion exchange device, after the metal ions in the wastewater are adsorbed by the ion exchange mechanism, the wastewater enters through the inlet pipe on the first inlet / outlet assembly, flows through the activated carbon particle layer in the container, and is discharged through the drain pipe on the second inlet / outlet assembly. Subsequently, by adjusting the inlet valves and drain valves on the first and second inlet / outlet assemblies, the wastewater enters through the inlet pipe on the second inlet / outlet assembly, flows through the activated carbon particle layer in the container, and is discharged through the drain pipe on the first inlet / outlet assembly. This allows the wastewater to enter alternately from both sides of the container. Compared with an activated carbon particle layer of the same thickness, this reduces the height of the activated carbon particle layer, improves the uniformity of contact between the activated carbon particles and the wastewater, effectively reduces the aggregation height of the activated carbon particle layer, reduces the caking rate of the activated carbon particles, improves the adsorption effect, and extends its service life. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a top view schematic diagram of the structure of this utility model.

[0022] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0023] Figure 4 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point BB.

[0024] Figure 5 This is a three-dimensional structural diagram of the container and guide sleeve of this utility model.

[0025] The following are labels in the attached diagram: 1. Horizontal tank; 2. Container cylinder; 3. Perforated sieve plate; 4. Drain pipe; 5. Inlet pipe; 6. Drain valve; 7. Inlet valve; 8. Guide sleeve; 9. Spiral chute; 10. Roller shaft; 11. Booster pump; 12. Supporting slip ring; 13. Sealing slip ring; 14. Exchange tank; 15. Perforated plate; 16. Filter cap; 17. Outlet pipe; 18. Inlet pipe; 19. First water distribution pipe assembly; 20. Second water distribution pipe assembly; 21. Sewage pipe; 22. Blind flange. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Example 1 Please refer to Figures 1-5 A wastewater decolorization and ion exchange device, comprising an ion exchange mechanism, an activated carbon adsorption decolorization mechanism, and a pressure pump 11.

[0030] The activated carbon adsorption decolorization mechanism includes a horizontal tank 1, a holding cylinder 2 installed in the middle of the horizontal tank 1, perforated screen plates 3 installed on both sides of the holding cylinder 2, and a first inlet / outlet water assembly and a second inlet / outlet water assembly symmetrically arranged on both sides of the horizontal tank 1. The first inlet / outlet water assembly and the second inlet / outlet water assembly each include a drain pipe 4 installed on the upper part of the horizontal tank 1 and connected to the upper part of the horizontal tank 1, and an inlet pipe 5 installed on the lower part of the horizontal tank 1 and connected to the lower part of the horizontal tank 1. A drain valve 6 is installed on the drain pipe 4, and an inlet valve 7 is installed on the inlet pipe 5.

[0031] The ion exchange mechanism is used to remove metal ions from wastewater. The inlet pipes 5 on both the first and second inlet / outlet components are connected to the outlet of the ion exchange mechanism. The input end of the booster pump 11 is connected to the outlet end of the ion exchange mechanism, and the output end of the booster pump 11 is connected to the inlet pipes 5 on both the first and second inlet / outlet components. Furthermore, a pressure gauge is installed at the outlet end of the booster pump 11. The outlet pressure at the booster pump 11 should be sufficient to move the container 2 within the horizontal tank 1. This can be achieved by selecting an appropriate booster pump 11 to ensure sufficient outlet pressure to move the container 2 horizontally within the horizontal tank 1. It should be noted that the outlet pressure of the booster pump 11 should be less than the desorption pressure of the activated carbon particles to avoid the pigments adsorbed by the activated carbon particles detaching due to excessive water pressure.

[0032] Furthermore, a cavity is formed between the inner wall of the container cylinder 2 and the perforated sieve plate 3, and the cavity is filled with activated carbon particles. The outer wall of the container cylinder 2 fits into the inner wall of the horizontal tank 1, and the length-to-height ratio of the container cylinder 2 is greater than 2. By opening the inlet valve 7 on the first inlet / outlet assembly and the drain valve 6 on the second inlet / outlet assembly, and closing the drain valve 6 on the first inlet / outlet assembly and the inlet valve 7 on the second inlet / outlet assembly, wastewater enters from the left side of the container cylinder 2 and flows out from the right side of the container cylinder 2 (with... Figure 4 (For directional reference), by opening the inlet valve 7 on the second inlet / outlet assembly and the drain valve 6 on the first inlet / outlet assembly, and closing the drain valve 6 on the second inlet / outlet assembly and the inlet valve 7 on the first inlet / outlet assembly, the wastewater enters from the right side of the container 2 and flows out from the left side of the container 2, thereby realizing the reversal of the wastewater flow direction.

[0033] For details, please refer to Figure 1 and Figure 5 Both ends of the horizontal tank 1 are detachably equipped with blind flanges 22, and the perforated sieve plate 3 is detachably installed at the end of the container 2. Furthermore, the blind flanges 22 are detachably connected to the horizontal tank 1 by bolts, and the perforated sieve plate 3 is detachably connected to the container 2 by bolts. The activated carbon particles inside the container 2 can be replaced by removing the blind flanges 22 and the perforated sieve plate 3.

[0034] For details, please refer to Figures 4-5 The container cylinder 2 is slidably installed inside the horizontal tank 1 along the inner radial direction. A guide sleeve 8 is fixedly installed in the middle of the horizontal tank 1, and a spiral groove 9 is provided at the guide sleeve 8. A roller 10 extending into the spiral groove 9 is installed on the outer wall of the container cylinder 2. Furthermore, the outer wall of the container cylinder 2 is slidably sealed to the inner wall of the horizontal tank 1, and the roller 10 is rotatably installed on the container cylinder 2 and slidably installed in the spiral groove 9. The water resistance of the activated carbon particles inside the container cylinder 2 should be greater than the lateral frictional resistance borne by the container cylinder 2 from the inner wall of the horizontal tank 1.

[0035] For details, please refer to Figures 4-5Both ends of the container 2 are provided with support sliding rings 12 with an outer diameter larger than that of the container 2. Sealing sliding rings 13 are embedded in the support sliding rings 12. Furthermore, the support sliding rings 12 can effectively support the container 2, and the sealing sliding rings 13 are used for sliding seal between the support sliding rings 12 and the inner wall of the horizontal tank 1. The sealing sliding rings 13 are preferably self-lubricating sealing materials such as graphite or molybdenum disulfide.

[0036] Working process: The pressurizing pump 11 injects wastewater into the horizontal tank 1 and acts on the end of the holding cylinder 2. The water pressure pushes the holding cylinder 2 to slide radially along the horizontal tank 1. When the roller shaft 10 slides along the spiral groove 9 inside the bushing, it can drive the holding cylinder 2 to rotate around its central axis. During the rotation of the holding cylinder 2, the positions of the activated carbon particles in the upper and lower parts of the holding cylinder 2 are adjusted to avoid the activated carbon being piled up in the same state for a long time in the holding cylinder 2, further reducing the caking rate of the activated carbon layer, so that the activated carbon particles maintain a good adsorption effect for a longer time; support sliding ring 12 can reduce the contact area between the container 2 and the inner wall of the horizontal tank 1, thereby reducing the frictional resistance during the sliding process of the support sliding ring 12, reducing the lateral thrust required for the container 2 to move, and saving more energy. The sealing sliding ring 13 can seal the connection between the support sliding ring 12 and the inner wall of the horizontal tank 1. The pressure pump 11 can draw out the water from the drain end of the ion exchange mechanism to improve the drainage smoothness of the ion exchange mechanism. After the water pressure is increased by the pressure pump 11, it can provide a greater lateral thrust to the container 2 to ensure that the container 2 moves and rotates smoothly in the horizontal tank 1.

[0037] Example 2 The wastewater decolorization and ion exchange device provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figures 1-3 The ion exchange mechanism includes an exchange tank 14, a perforated plate 15 installed at the bottom of the exchange tank 14, multiple filter caps 16 installed on the perforated plate 15, and an outlet pipe 17 communicating with the bottom of the exchange tank 14. An inlet pipe 18 communicating with the upper part of the exchange tank 14 and a first water distribution pipe assembly 19 communicating with the inlet pipe 18 are installed on the exchange tank 14. Furthermore, the outlet end of the outlet pipe 17 is connected to the inlet pipe 5 on the first and second inlet / outlet components or to the input end of the booster pump 11. The exchange tank 14 is filled with cation exchange resin. Necessary valves and other valves are installed at the inlet pipe 18 and the outlet pipe 17.

[0038] For details, please refer to Figure 3 A second water distribution pipe assembly 20 is installed at the bottom of the exchange tank 14, and a sewage pipe 21 is provided at the top of the exchange tank 14; furthermore, the inlet end of the second water distribution pipe assembly 20 is connected to an external pressurized backwash water source.

[0039] In the wastewater decolorization and ion exchange device provided in this embodiment, wastewater enters the exchange tank 14 through the inlet pipe 18 and the first water distribution pipe group 19. The wastewater comes into contact with the cation exchange resin in the exchange tank 14 and adsorbs the metal cations in the wastewater. The filter cap 16 can prevent the cation exchange resin from flowing out of the exchange tank 14. The treated wastewater is discharged through the outlet pipe 17. When it is necessary to clean the exchange tank 14, an external pressurized water source can enter the bottom of the exchange tank 14 through the second water distribution pipe group 20. The cation exchange resin is backwashed by pressurized clean water. The backwash wastewater is discharged through the upper drain pipe 21. During this process, both the inlet pipe 18 and the outlet pipe 17 are closed.

[0040] The wastewater decolorization and ion exchange device provided by this utility model is used as follows: Wastewater enters the upper part of the exchange tank 14 through the inlet pipe 18 and the first water distribution pipe group 19. Under the action of the cation exchange resin in the exchange tank 14, the metal cations in the wastewater are adsorbed and removed. The pressurization pump 11 draws the wastewater treated at the bottom of the exchange tank 14 out through the outlet pipe 17. The pressurized wastewater enters the horizontal tank 1 alternately through the first inlet / outlet component or the second inlet / outlet component, so that the wastewater alternately acts on both sides of the holding cylinder 2. The holding cylinder 2 moves back and forth horizontally in the horizontal tank 1. The roller 10 slides in the spiral groove 9 while following the horizontal movement of the holding cylinder 2 and drives the holding cylinder 2 to make repeated rotational movements. The wastewater comes into uniform contact with the activated carbon particles in the holding cylinder 2. The activated carbon particles adsorb the pigments in the wastewater, thereby realizing the decolorization and ion exchange treatment of the wastewater.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A wastewater decolorization and ion exchange device, characterized in that, The device includes an ion exchange mechanism and an activated carbon adsorption decolorization mechanism. The activated carbon adsorption decolorization mechanism includes a horizontal tank (1), a container (2) installed in the middle of the horizontal tank (1), a perforated sieve plate (3) installed on both sides of the container (2), and a first inlet / outlet water assembly and a second inlet / outlet water assembly symmetrically arranged on both sides of the horizontal tank (1). The first inlet / outlet water assembly and the second inlet / outlet water assembly each include a drain pipe (4) installed on the upper part of the horizontal tank (1) and communicating with the upper part of the horizontal tank (1), and an inlet water pipe (5) installed on the lower part of the horizontal tank (1) and communicating with the lower part of the horizontal tank (1). A drain valve (6) is installed on the drain pipe (4), and an inlet water valve (7) is installed on the inlet water pipe (5). The inlet water pipes (5) on the first inlet / outlet water assembly and the second inlet / outlet water assembly are all connected to the outlet end of the ion exchange mechanism.

2. The wastewater decolorization and ion exchange device according to claim 1, characterized in that, The container (2) is slidably installed in the horizontal tank (1) along the inner radial direction. A guide sleeve (8) is fixedly installed in the middle of the horizontal tank (1). A spiral groove (9) is provided at the guide sleeve (8). A roller (10) extending into the spiral groove (9) is installed on the outer wall of the container (2).

3. The wastewater decolorization and ion exchange device according to claim 1 or 2, characterized in that, It also includes a pressurizing pump (11), the input end of which is connected to the outlet end of the ion exchange mechanism, and the output end of which is connected to the inlet pipe (5) on the first inlet / outlet water assembly and the second inlet / outlet water assembly.

4. The wastewater decolorization and ion exchange device according to claim 1 or 2, characterized in that, Both ends of the container (2) are provided with support sliding rings (12) with an outer diameter larger than that of the container (2), and sealing sliding rings (13) are embedded in the support sliding rings (12).

5. The wastewater decolorization and ion exchange device according to claim 1, characterized in that, The ion exchange mechanism includes an exchange tank (14), an orifice plate (15) installed at the bottom of the exchange tank (14), a plurality of filter caps (16) installed on the orifice plate (15), and an outlet pipe (17) connected to the bottom of the exchange tank (14); the exchange tank (14) is equipped with an inlet pipe (18) connected to the upper part of the exchange tank (14) and a first water distribution pipe group (19) connected to the inlet pipe (18).

6. The wastewater decolorization and ion exchange device according to claim 5, characterized in that, The bottom of the exchange tank (14) is equipped with a second water distribution pipe assembly (20), and the top of the exchange tank (14) is provided with a sewage pipe (21).

7. The wastewater decolorization and ion exchange device according to claim 1, characterized in that, Both ends of the horizontal tank (1) can be detachably installed with blind plates (22), and the perforated sieve plate (3) can be detachably installed at the end of the container (2).

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