A device for recovering papermaking wastewater

Abstract

The utility model discloses a device is retrieved with papermaking wastewater belongs to wastewater recovery technical field, including sedimentation tank and the multistage settlement structure of setting in the sedimentation tank, one side of sedimentation tank is equipped with filter equipment still, the top one side of sedimentation tank is equipped with feed cavity, the inner wall fixed connection of feed cavity has guide vane, through the setting of multistage settlement mechanism, first papermaking wastewater and chemical reagent enter the feed cavity in the sedimentation tank, and the guide of guide vane in feed cavity enters the first settlement chamber and settles down, and the papermaking wastewater that settles down through the first settlement chamber enters the second settlement chamber through the height of baffle that adjusting rod adjusts, and the papermaking wastewater that settles down through the second settlement chamber enters the third settlement chamber through the height of baffle that adjusting rod adjusts, through several levels of settlement, make the solid object in the papermaking wastewater that settles down and stay in the bottom of sedimentation tank, effectively prevent the aperture block -up of subsequent filter equipment, effectively improved the efficiency of filtration.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater recycling technology, specifically relating to a device for recycling papermaking wastewater. Background Technology

[0002] With the development of the pulp and paper industry, the recycling of waste paper for papermaking has become a new trend. Papermaking wastewater is a type of wastewater with large volume, complex composition, and a wide range of water quality variations. Pre-treatment of papermaking wastewater before discharge can improve its quality and facilitate the adoption of different pre-treatment methods based on different wastewater qualities.

[0003] The first step in papermaking wastewater recycling is to separate the solids and liquids in the wastewater. Currently, filters are usually used to filter flocculent matter. However, because there is a lot of flocculent matter in the wastewater, the filter screen is quickly covered by the accumulated flocculent matter, causing the pores of the filter screen to become clogged. This increases the resistance of the wastewater to passing through the filter screen, so workers need to clean the filter screen frequently, which increases the maintenance difficulty and the workload of the workers. Utility Model Content

[0004] The purpose of this utility model is to provide a device for recycling papermaking wastewater to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: it includes a sedimentation tank and a multi-stage sedimentation structure disposed within the sedimentation tank. A filter device is also provided on one side of the sedimentation tank, and a feed chamber is provided on one side of the top of the sedimentation tank. A guide plate is fixedly connected to the inner wall of the feed chamber.

[0005] The multi-stage settling structure includes a first settling chamber, a second settling chamber, and a third settling chamber within the settling tank. The first settling chamber is located below the feed chamber. A baffle is provided between the first settling chamber and the second settling chamber. An adjusting rod is fixedly connected to the lifting end of the baffle. A baffle is also provided between the second settling chamber and the third settling chamber.

[0006] It should be noted in the solution that the filtration device includes a filtration pool and a filter. The inner wall of the filtration pool is provided with two fixed plates, and the top of the filtration pool is provided with an installation hole located between the two fixed plates. The filter is installed between the two fixed plates, and the filter divides the interior of the filtration pool into an inlet chamber and an outlet chamber.

[0007] It should be noted in the scheme that the bottom of the first settling chamber is provided with a bottom plate, the bottom plate is inclined, and the higher end of the bottom plate is fixedly connected to the baffle.

[0008] It should be noted in the scheme that a number of connecting pipes are provided between the filtration tank and the sedimentation tank. The connecting pipes are distributed vertically, with one end of the connecting pipe connected to the third sedimentation chamber and the other end of the connecting pipe connected to the filtration tank.

[0009] It should be noted in the solution that the filter consists of a first filter layer, a second filter layer, a third filter layer and a fourth filter layer.

[0010] It should be noted in the scheme that the top of the sedimentation tank is provided with a feed inlet, which is located above the guide plate, and the bottom of the sedimentation tank is provided with a discharge outlet, which is connected to the first sedimentation chamber.

[0011] It should be noted in the solution that the bottom of the filter tank is provided with a clean water outlet, which is connected to the filter tank.

[0012] Compared with the prior art, the papermaking wastewater recycling device provided by this utility model has at least the following beneficial effects:

[0013] (1) By setting up a multi-stage sedimentation structure, in actual use, papermaking wastewater is poured into the sedimentation tank and chemical agents commonly used to clean papermaking wastewater are added. First, the papermaking wastewater and chemical agents enter the feed chamber in the sedimentation tank. After being guided by the guide plate in the feed chamber, they enter the first sedimentation chamber for sedimentation. The papermaking wastewater that has settled in the first sedimentation chamber enters the second sedimentation chamber by adjusting the height of the baffle through the adjusting rod. The papermaking wastewater that has settled in the second sedimentation chamber enters the third sedimentation chamber by adjusting the height of the baffle through the adjusting rod. Through several stages of sedimentation, the solid objects in the settled papermaking wastewater remain at the bottom of the sedimentation tank, effectively preventing the pores of the subsequent filtration device from being blocked and effectively improving the filtration efficiency.

[0014] (2) By setting up a filtration device, the papermaking wastewater after solid-liquid separation in the sedimentation tank enters the filtration tank and is further filtered by the filter to remove the solid particles remaining in the papermaking wastewater, making the discharge of papermaking wastewater safer. The filter can be replaced and cleaned through the installation hole, making replacement and cleaning more convenient. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the product of this utility model;

[0016] Figure 2 This is a front view cross-sectional structural diagram of the product of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the filter pool 2 of this utility model product.

[0018] In the diagram: 1. Sedimentation tank; 2. Filtration tank; 3. Filter; 4. Connecting pipe; 5. Clean water outlet; 6. Discharge outlet; 7. First sedimentation chamber; 8. Feed chamber; 9. Guide plate; 10. Bottom plate; 11. Baffle; 12. Second sedimentation chamber; 13. Adjusting rod; 14. Third sedimentation chamber; 15. Fixing plate; 16. First filter layer; 17. Second filter layer; 18. Third filter layer; 19. Fourth filter layer. Detailed Implementation

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 A wastewater recycling device for papermaking includes a settling tank 1 and a multi-stage settling structure disposed within the settling tank 1. A filter device is also provided on one side of the settling tank 1. A feed chamber 8 is provided on one side of the top of the settling tank 1. A guide plate 9 is fixedly connected to the inner wall of the feed chamber 8. The multi-stage settling structure includes a first settling chamber 7, a second settling chamber 12 and a third settling chamber 14 within the settling tank 1. The first settling chamber 7 is located below the feed chamber 8. A baffle 11 is provided between the first settling chamber 7 and the second settling chamber 12. An adjusting rod 13 is fixedly connected to the lifting end of the baffle 11. A baffle 11 is also provided between the second settling chamber 12 and the third settling chamber 14.

[0021] Through the multi-stage sedimentation structure, in actual use, papermaking wastewater is poured into sedimentation tank 1, and chemical agents commonly used for cleaning papermaking wastewater are added. First, the papermaking wastewater and chemical agents enter the feed chamber 8 in sedimentation tank 1. After being guided by the guide plate 9 in the feed chamber 8, they enter the first sedimentation chamber 7 for sedimentation. The papermaking wastewater that has settled in the first sedimentation chamber 7 enters the second sedimentation chamber 12 through the adjustment rod 13 to adjust the height of the baffle 11. The papermaking wastewater that has settled in the second sedimentation chamber 12 enters the third sedimentation chamber 14 through the adjustment rod 13 to adjust the height of the baffle 11. Through several stages of sedimentation, the solid objects in the settled papermaking wastewater remain at the bottom of sedimentation tank 1, effectively preventing the pores of the subsequent filtration device from becoming clogged and effectively improving the filtration efficiency.

[0022] Furthermore, referring to Figure 1-3As shown, it is worth noting that the filtration device includes a filter pool 2 and a filter 3. The inner wall of the filter pool 2 is provided with two fixing plates 15. The top of the filter pool 2 is provided with an installation hole, which is located between the two fixing plates 15. The filter 3 is installed between the two fixing plates 15. The filter 3 divides the interior of the filter pool 2 into an inlet chamber and an outlet chamber.

[0023] With the installation of the filtration device, the papermaking wastewater after solid-liquid separation in the sedimentation tank 1 enters the filtration tank 2 and is further filtered by the filter 3, which removes the residual solid particles in the papermaking wastewater, making the discharge of papermaking wastewater safer. The filter 3 can be replaced and cleaned through the installation hole, making replacement and cleaning more convenient.

[0024] Furthermore, referring to Figure 1-3 As shown, it is worth noting that the bottom of the first settling chamber 7 is provided with a bottom plate 10, which is inclined, and the higher end of the bottom plate 10 is fixedly connected to the baffle 11.

[0025] With the bottom plate 10 in place, during actual use, the solids in the papermaking wastewater settle to the bottom of the settling tank 1 after a period of time, which is above the bottom plate 10. By adjusting the height of the baffle 11, the upper layer of papermaking wastewater enters the second settling chamber 12, and then the solids in the bottom plate 10 are discharged. The inclined bottom plate 10 can effectively assist the discharge of solids from the settling tank 1.

[0026] Furthermore, referring to Figure 1-3 As shown, it is worth noting that a number of connecting pipes 4 are provided between the filter tank 2 and the sedimentation tank 1. The connecting pipes 4 are distributed vertically. One end of the connecting pipe 4 is connected to the third sedimentation chamber 14, and the other end of the connecting pipe 4 is connected to the filter tank 2. A solenoid valve is provided on the body of the connecting pipe 4.

[0027] By setting up the inlet connecting pipe 4, the settled papermaking wastewater is discharged into the filter tank 2 through the connecting pipe 4. By distributing several connecting pipes 4 vertically, it is possible to select which height range of papermaking wastewater to discharge into the filter tank 2, so that the papermaking wastewater can be discharged into the filter tank 2 more stably.

[0028] Furthermore, referring to Figure 1-3 As shown, it is worth noting that the filter 3 is composed of a first filter layer 16, a second filter layer 17, a third filter layer 18 and a fourth filter layer 19.

[0029] With the filter 3 configured, in actual use, the first filter layer 16 is a metal filter screen that traps large suspended particles; the second filter layer 17 is a ceramic filter element that removes medium-sized particles; the third filter layer 18 is activated carbon that adsorbs organic matter and heavy metals; and the fourth filter layer 19 is fluffy cotton or a precision filter screen that intercepts micron-sized impurities.

[0030] Furthermore, referring to Figure 1-3 As shown, it is worth noting that the sedimentation tank 1 has a feed inlet at the top, which is located above the guide plate 9, and a discharge port 6 at the bottom, which is connected to the first sedimentation chamber 7.

[0031] By setting the discharge port 6, the solids inside the bottom plate 10 can be discharged.

[0032] Furthermore, referring to Figure 1-3 As shown, it is worth noting that the bottom of the filter tank 2 is provided with a clean water outlet 5, which is connected to the filter tank 2.

[0033] With the inlet and outlet 5 set up, the purified water outlet 5 can discharge the wastewater that has been filtered in the filter tank 2.

[0034] The present invention provides a device for recycling papermaking wastewater. Specific preferred embodiments have been used to illustrate the principles and implementation methods of the present invention. These embodiments are merely for the purpose of helping to understand the principles and core ideas of the present invention. It should be noted that, for those skilled in the art, the implementation schemes in the above embodiments can be further combined or replaced without departing from the design concept of the present invention, and several improvements and modifications can be made to the present invention. These improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A device for recycling papermaking wastewater, characterized in that: It includes a settling tank (1) and a multi-stage settling structure set in the settling tank (1). A filter device is also provided on one side of the settling tank (1). A feed chamber (8) is provided on one side of the top of the settling tank (1). A guide plate (9) is fixedly connected to the inner wall of the feed chamber (8). The multi-stage settling structure includes a first settling chamber (7), a second settling chamber (12), and a third settling chamber (14) in the settling tank (1). The first settling chamber (7) is located below the feed chamber (8). A baffle (11) is provided between the first settling chamber (7) and the second settling chamber (12). An adjusting rod (13) is fixedly connected to the lifting end of the baffle (11). A baffle (11) is also provided between the second settling chamber (12) and the third settling chamber (14).

2. The device for recycling papermaking wastewater according to claim 1, characterized in that: The filtration device includes a filtration pool (2) and a filter (3). The inner wall of the filtration pool (2) is provided with two fixing plates (15). The top of the filtration pool (2) is provided with an installation hole, which is located between the two fixing plates (15). The filter (3) is installed between the two fixing plates (15). The filter (3) divides the interior of the filtration pool (2) into an inlet chamber and an outlet chamber.

3. The device for recycling papermaking wastewater according to claim 2, characterized in that: The bottom of the first settling chamber (7) is provided with a bottom plate (10), which is inclined and the higher end of the bottom plate (10) is fixedly connected to the baffle (11).

4. The device for recycling papermaking wastewater according to claim 3, characterized in that: Several connecting pipes (4) are provided between the filter tank (2) and the sedimentation tank (1). The connecting pipes (4) are distributed vertically. One end of the connecting pipe (4) is connected to the third sedimentation chamber (14), and the other end of the connecting pipe (4) is connected to the filter tank (2).

5. The device for recycling papermaking wastewater according to claim 4, characterized in that: The filter (3) consists of a first filter layer (16), a second filter layer (17), a third filter layer (18) and a fourth filter layer (19).

6. The device for recycling papermaking wastewater according to claim 5, characterized in that: The sedimentation tank (1) has a feed inlet at the top, which is located above the guide plate (9). The sedimentation tank (1) has a discharge port (6) at the bottom, which is connected to the first sedimentation chamber (7).

7. The device for recycling papermaking wastewater according to claim 6, characterized in that: The bottom of the filter tank (2) is provided with a clean water outlet (5), which is connected to the filter tank (2).

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