Adsorption and recovery device for sodium lignin sulfonate in papermaking wastewater

Abstract

The utility model discloses a device for adsorbing and recovering sodium lignin sulfonate in papermaking wastewater, which comprises a cylinder body and a rotating rod positioned in the cylinder body, the rotating rod is provided with an adsorption box for placing an adsorption material, the adsorption material is adsorption particles, the rotating rod is provided with at least two mounting grooves for mounting the adsorption box, and the adsorption box is arranged in the mounting grooves. A limiting plate is arranged in the adsorption box, the shape of the limiting plate corresponds to the shape of the horizontal section in the adsorption box, the limiting plate is slidably connected with the adsorption box in the vertical direction, and the adsorption particles are located below the limiting plate. The adsorption particles are located in the adsorption box, the limiting plate in the adsorption box limits the activity space of the adsorption particles, after the adsorption work of the adsorption particles is completed, accumulation of the adsorption particles is formed, and release of adsorbed sodium lignin sulfonate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of papermaking wastewater treatment technology, and in particular to a sodium lignosulfonate adsorption and recovery device for papermaking wastewater. Background Technology

[0002] Papermaking wastewater contains a large amount of sodium lignosulfonate. Sodium lignosulfonate, as a natural polysaccharide biopolymer, can be used to produce various chemicals and composite materials, such as cement water-reducing agents, drilling mud treatment agents, dye dispersants, pesticide dispersants, and fillers for rubber and plastics. Recycling sodium lignosulfonate can not only realize the recycling and reuse of resources, but also reduce the pollution of wastewater to the environment.

[0003] In existing technologies, sodium lignosulfonate in papermaking wastewater can be recovered through methods such as acid precipitation, electrodialysis, ultrafiltration, flocculation sedimentation, and adsorption. Adsorption, in particular, utilizes sodium lignosulfonate adsorbent materials (such as activated carbon) to adsorb sodium lignosulfonate from the wastewater. The adsorbed material is then separated from the wastewater and, through washing and drying, the recovered sodium lignosulfonate product is obtained. In existing adsorption devices, adsorbent particles are placed in a container to form an adsorbate body, which is then placed in the wastewater for adsorption. After a period of adsorption, the adsorbate body is removed. Because the adsorbent particles are dispersed and easily move in the wastewater, the impact of the wastewater causes the adsorbent particles to release the target substance after adsorption, affecting the adsorption efficiency. Utility Model Content

[0004] This invention addresses the issue that in existing adsorption devices, the dispersed adsorption material particles cause the target substance to be easily released after adsorption. Therefore, it proposes a sodium lignosulfonate adsorption and recovery device for papermaking wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sodium lignosulfonate adsorption and recovery device for papermaking wastewater includes a cylindrical body and a rotating rod located inside the cylindrical body. An adsorption box for placing adsorbent material is provided on the rotating rod. At least two mounting slots are provided on the rotating rod for mounting the adsorption box. A limiting plate is provided inside the adsorption box, the shape of which corresponds to the horizontal cross-sectional shape of the adsorption box. The limiting plate and the adsorption box are slidably connected in the vertical direction. The adsorbent material is adsorbent particles, located below the limiting plate.

[0007] Preferably, the top plate of the adsorption box is provided with a threaded rod, which is threadedly connected to the top plate and passes through the top plate. The lower part of the threaded rod is rotatably connected to the top surface of the limiting plate, and the upper part of the threaded rod is fixedly connected to a handle.

[0008] Preferably, the mounting groove is a groove with an open top, the interior of the mounting groove matches the shape of the adsorption box, and a limiting plate is provided at the top of the mounting groove for limiting the adsorption box. The limiting plate is rotatably connected to the mounting groove, and the limiting plate rotates to move to be in or away from the top opening of the mounting groove.

[0009] Preferably, a fixing pin is provided on the top surface of the mounting groove. The fixing pin is vertically positioned, and the limiting plate is sleeved on the fixing pin to form a rotatable connection with the fixing pin.

[0010] Preferably, the top of the fixing pin is provided with an anti-detachment cap, which is integrally formed with the fixing pin.

[0011] Preferably, a support is provided on the upper part of the cylinder, the support is fixedly connected to the cylinder, and a rotary motor for driving the rotating rod to rotate is provided on the support.

[0012] Preferably, the upper part of the rotating rod is rotatably connected to the bracket, and the upper end of the rotating rod is connected to the output shaft of the rotary motor through a coupling.

[0013] Preferably, the lower end of the rotating rod is rotatably connected to the cylinder.

[0014] Preferably, a liquid outlet pipe is provided at the bottom of the cylinder.

[0015] The beneficial effects of this utility model are:

[0016] 1. This sodium lignosulfonate adsorption and recovery device for papermaking wastewater introduces the wastewater into a cylindrical body, where adsorption particles are formed inside the body to adsorb the sodium lignosulfonate. A limiting plate is installed inside the adsorption box. When the adsorption particles are performing adsorption, the limiting plate is at its upper limit position, allowing the particles to move freely in the space below the limiting plate. The surface of each particle serves as the adsorption area, facilitating thorough adsorption. When the adsorption is complete, the limiting plate moves downwards, reducing the space for the particles to move and causing them to accumulate, thus reducing the release of adsorbed sodium lignosulfonate.

[0017] 2. The rotating rod of this sodium lignosulfonate adsorption and recovery device for papermaking wastewater is equipped with an installation groove. The adsorption box is placed inside the installation groove for installation. A rotatable limiting block is set at the top of the installation groove. The limiting block can be rotated to form or release the limiting of the adsorption box, which facilitates the installation and removal of the adsorption box. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sodium lignosulfonate adsorption and recovery device (adsorption in progress) in the papermaking wastewater.

[0019] Figure 2 This is a top view schematic diagram of the sodium lignosulfonate adsorption and recovery device for papermaking wastewater.

[0020] Figure 3 This is a schematic diagram of the structure of the sodium lignosulfonate adsorption and recovery device at the limiting plate in the papermaking wastewater.

[0021] Figure 4 This is a schematic diagram showing the changes in the rotational state of the limiting plate in the sodium lignosulfonate adsorption and recovery device for papermaking wastewater.

[0022] Figure 5 This is a schematic diagram of the sodium lignosulfonate adsorption and recovery device in the papermaking wastewater (after adsorption is complete).

[0023] In the diagram: 1. Cylinder; 2. Support; 3. Rotating rod; 4. Mounting groove; 5. Adsorption box; 6. Adsorbed particles; 7. Rotary motor; 8. Base; 9. Liquid outlet pipe;

[0024] 41. Limiting plate; 42. Fixing pin; 51. Top plate; 52. Limiting plate; 53. Threaded rod; 54. Handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-2 A sodium lignosulfonate adsorption and recovery device for papermaking wastewater includes a cylindrical body 1. A rotating rod 3 is installed inside the cylindrical body 1, and the rotating rod 3 is used to mount an adsorption box 5. Adsorption granules 6 for adsorbing sodium lignosulfonate are placed inside the adsorption box 5. In this embodiment, the adsorption granules 6 are activated carbon granules.

[0027] Specifically, a support 2 is provided on the upper part of the cylinder 1, and the support 2 is fixedly connected to the cylinder 1. The upper part of the rotating rod 3 is rotatably connected to the support 2. A rotary motor 7 is provided on the support 2. The upper end of the rotating rod 3 is connected to the output shaft of the rotary motor 7 through a coupling. The rotary motor 7 is used to drive the rotating rod 3 to rotate. The lower end of the rotating rod 3 is rotatably connected to the cylinder 1 to improve the stability of the rotating rod 3 during rotation.

[0028] refer to Figure 1 , Figure 2 and Figure 3The rotating rod 3 has six mounting slots 4, which are fixedly connected to the rotating rod 3. The mounting slots 4 are evenly distributed around the rotating rod 3 with the axis of rotation as the center. The mounting slots 4 are top-opening slots, and the interior of the mounting slots 4 matches the shape of the adsorption box 5. For example, in this embodiment, the adsorption box 5 is a cuboid, so the mounting slots 4 are also matching cuboid slots. The adsorption box 5 can be placed inside the mounting slot 4 through the top opening. The top of the mounting slot 4 is provided with a limiting plate 41 and a fixing pin 42. The fixing pin 42 is vertically set, and the limiting plate 41 is sleeved on the fixing pin 42 and forms a rotatable connection with the fixing pin 42.

[0029] The aforementioned limiting plate 41 rotates to form an opening at the top of the mounting groove 4. (See reference) Figure 4 When the limiting plate 41 is located at the opening position at the top of the mounting groove 4, the limiting plate 41 is used to limit the adsorption box 5 to prevent the adsorption box 5 from coming out of the top opening of the mounting groove 4 during rotation; when the limiting plate 41 leaves the opening position at the top of the mounting groove 4, the limiting plate 41 is released to limit the adsorption box 5, making it convenient for the adsorption box 5 to be taken out of the mounting groove 4.

[0030] Furthermore, an anti-detachment cap is provided on the top of the fixing pin 42. The anti-detachment cap is integrally formed with the fixing pin 42 and is used to prevent the limiting plate 41 from coming off from the upper end of the fixing pin 42.

[0031] Further reference Figure 4 The adsorption box 5 has a limiting plate 52 inside, which is horizontally positioned and slidably connected to the adsorption box 5 in the vertical direction. Specifically, a threaded rod 53 is provided on the top plate 51 of the adsorption box 5. The threaded rod 53 is threadedly connected to the top plate 51 and passes through the top plate 51. The lower part of the threaded rod 53 is rotatably connected to the top surface of the limiting plate 52, and the upper part of the threaded rod 53 is fixedly connected to a handle 54. Rotating the handle 54 causes the threaded rod 53 to rotate relative to the adsorption box 5, thereby causing the threaded rod 53 to move vertically relative to the adsorption box 5, which in turn causes the limiting plate 52 to move vertically.

[0032] The shape of the aforementioned limiting plate 52 corresponds to the shape of the horizontal cross-section inside the adsorption box 5. The adsorbed particles 6 inside the adsorption box 5 are located below the limiting plate 52, and the area below the limiting plate 52 is the movement space for the adsorbed particles 6. The size of the movement space for the adsorbed particles 6 is controlled by the vertical movement of the limiting plate 52. (Reference) Figure 1 When the adsorbent particles 6 are performing adsorption, the limiting plate 52 is at its upper limit position, allowing the adsorbent particles 6 to move freely in the space below the limiting plate 52. The surface of each adsorbent particle 6 can serve as an adsorption area, enabling thorough adsorption. (Reference) Figure 5When the adsorption work of adsorbent particle 6 is completed, the limiting plate 52 moves downward, reducing the activity space of adsorbent particle 6, causing adsorbent particle 6 to accumulate and reducing the release of adsorbed sodium lignosulfonate.

[0033] It is worth noting that in this embodiment, the mounting groove 4, the adsorption box 5, and the limiting plate 52 are all plates with holes, such as mesh panels or perforated plates, for liquid flow, so as to facilitate contact between papermaking wastewater and adsorption particles 6.

[0034] In this embodiment, the cylinder 1 is used to hold papermaking wastewater, and a liquid outlet pipe 9 is provided at the bottom of the cylinder 1 for discharging the papermaking wastewater. A base 8 is provided at the lower part of the cylinder 1 to support the cylinder 1 and facilitate the discharge of liquid from the liquid outlet pipe 9.

[0035] The working process of the sodium lignin sulfonate adsorption and recovery device in papermaking wastewater in this embodiment is as follows:

[0036] Step 1: Place the adsorption box 5 into the inside of the mounting groove 4 through the top opening of the mounting groove 4, rotate the limiting plate 41 so that the limiting plate 41 is located at the top opening of the mounting groove 4, and the limiting plate 41 limits the adsorption box 5; then adjust the position of the limiting plate 52 so that it is at the upper limit position. At this time, the adsorption particles 6 can move in the space below the limiting plate 52, and the surface of each adsorption particle 6 can be used as the adsorption area.

[0037] Step 2: The papermaking wastewater is introduced into the interior of the cylinder 1. The rotary motor 7 drives the rotary rod 3 to rotate, so that the adsorption box 5 rotates inside the cylinder 1. The adsorption particles 6 inside the adsorption box 5 absorb the sodium lignosulfonate in the papermaking wastewater.

[0038] Step 3: After absorption is complete, rotate handle 54 to move the limiting plate 52 downward, reducing the activity space of adsorbed particles 6, causing adsorbed particles 6 to accumulate and reducing the release of adsorbed sodium lignosulfonate.

[0039] Step 4: Rotate the limiting plate 41 so that the limiting plate 41 leaves the top opening of the mounting groove 4, remove the adsorption box 5, and obtain the adsorbed particles 6 containing sodium lignosulfonate.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sodium lignosulfonate adsorption and recovery device for papermaking wastewater, comprising a cylinder and a rotating rod located inside the cylinder, wherein an adsorption box for placing adsorbent material is provided on the rotating rod, characterized in that, The rotating rod is provided with at least two mounting slots for mounting the adsorption box. The adsorption box is provided with a limiting plate inside. The shape of the limiting plate corresponds to the shape of the horizontal cross section inside the adsorption box. The limiting plate is slidably connected to the adsorption box in the vertical direction. The adsorbent material is adsorbent particles, which are located below the limiting plate.

2. The adsorption and recovery device according to claim 1, characterized in that, The top plate of the adsorption box is provided with a threaded rod, which is threadedly connected to the top plate and passes through the top plate. The lower part of the threaded rod is rotatably connected to the top surface of the limiting plate, and the upper part of the threaded rod is fixedly connected to a handle.

3. The adsorption and recovery device according to claim 1 or 2, characterized in that, The mounting groove is a groove with an open top. The interior of the mounting groove matches the shape of the adsorption box. A limiting plate is provided at the top of the mounting groove to limit the position of the adsorption box. The limiting plate is rotatably connected to the mounting groove. The limiting plate rotates to move to be in or away from the top opening of the mounting groove.

4. The adsorption and recovery device according to claim 3, characterized in that, A fixing pin is provided on the top surface of the mounting groove. The fixing pin is vertically positioned, and the limiting plate is sleeved on the fixing pin to form a rotatable connection with the fixing pin.

5. The adsorption and recovery device according to claim 4, characterized in that, The top of the fixing pin is provided with an anti-detachment cap, which is integrally formed with the fixing pin.

6. The adsorption and recovery device according to claim 1, characterized in that, A support is provided on the upper part of the cylinder, and the support is fixedly connected to the cylinder. A rotary motor for driving the rotating rod to rotate is provided on the support.

7. The adsorption and recovery device according to claim 6, characterized in that, The upper part of the rotating rod is rotatably connected to the bracket, and the upper end of the rotating rod is connected to the output shaft of the rotary motor through a coupling.

8. The adsorption and recovery device according to claim 7, characterized in that, The lower end of the rotating rod is rotatably connected to the cylinder.

9. The adsorption and recovery device according to claim 1, characterized in that, A liquid outlet pipe is provided at the bottom of the cylinder.

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