A sludge electric wall breaking and dehydration treatment device

Abstract

The present invention relates to the field of material storage equipment, and in particular to a sludge electric wall breaking and dehydration treatment device, comprising: a treatment tank, the treatment tank comprising a tank body, a filter ring arranged inside the tank body, the tank body is divided into a sludge chamber and a filter chamber inside and outside the filter ring respectively, the treatment tank is provided with a feed inlet at the top of the sludge chamber and a slurry outlet at the bottom, and the filter ring is divided into an upper ring part and a lower ring part; a stirring member is arranged in the sludge chamber at the lower ring part; an electrode member is arranged in the upper ring part, including an outer electrode arranged in the filter ring, an inner electrode arranged in the inner layer of the filter ring, and an electric wall breaking space for sludge is formed between the outer electrode and the inner electrode; a water inlet pipe is connected to the treatment tank; and a drain pipe is connected to the bottom of the filter chamber. The present invention effectively solves the problems existing in the prior art by performing electric wall breaking treatment on the water-injected sludge in the treatment tank, and reducing the soluble phosphorus-containing substances in the sludge by introducing water and draining water into the tank body.

Description

Technical Field

[0001] The invention relates to the field of material storage equipment, and in particular to a sludge electric wall breaking and dehydration treatment device. Background Art

[0002] For sludge carbonization treatment, drying and dehydration before the sludge enters the carbonization furnace is a key link. At present, sludge dehydration is mostly carried out by filter press. The sludge moisture content can be treated to between 40% and 70% by filter press. In the process of plate and frame filter press, in order to recover the soluble phosphorus in the sludge, the filter press is often repeatedly switched between filter press and water washing in the filter press to reduce the phosphorus content in the sludge after filtration.

[0003] The biomass cells and mud cores in the sludge contain a large amount of bound water, and the filter press has limited effect on filtering out the bound water. Therefore, some existing technologies use an improved high-voltage AC pulse sludge decomposition device and its application as disclosed in application No. 201711460712.1, which arranges inner and outer electrodes in the pipeline to perform electrical wall breaking treatment on the sludge flowing through, thereby controlling the water content of the sludge to further decrease during the filter press process.

[0004] This type of electrostatic wall breaking treatment is carried out while the sludge is moving, and is mostly carried out during the sludge pipeline transportation. When the sludge is electrostatically broken during pipeline transportation, it is easy for the uneven water content of the sludge, lumps, the presence of air bags, etc. to affect the uniformity and smoothness of the sludge flow in the pipeline and affect the effect of the electrostatic wall breaking.

[0005] Based on this, the applicant proposed a sludge electrolytic wall breaking treatment device, which can eliminate the influence of uneven sludge water content, lumps and air pockets during sludge electrolytic wall breaking. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a sludge electric wall breaking and dehydration treatment device, which effectively solves the problems existing in the prior art by performing electric wall breaking treatment on the water-injected sludge in a treatment tank and reducing the soluble phosphorus in the sludge by introducing and discharging water into and out of the tank body.

[0007] In order to solve the above problems, the present invention provides a sludge electric wall breaking and dehydration treatment device, including: a treatment tank, the treatment tank including a tank body, a filter ring arranged inside the tank body, the tank body is divided into a sludge chamber and a filter chamber inside and outside the filter ring respectively, the treatment tank is provided with a feed inlet at the top of the sludge chamber and a slurry outlet at the bottom, the filter ring is divided into an upper ring part and a lower ring part; a stirring member is arranged in the sludge chamber at the lower ring part; an electrode member is arranged in the upper ring part, including an outer electrode arranged on the filter ring and an inner electrode arranged on the inner layer of the filter ring, and an electric wall breaking space for sludge is formed between the outer electrode and the inner electrode; a water inlet pipe is connected to the treatment tank; a drain pipe is connected to the bottom of the filter chamber.

[0008] Furthermore, the stirring member includes a stirring rod and a blade arranged on the stirring rod; the stirring rod extends to the upper ring portion, and the inner electrode is arranged on the portion of the stirring rod in the upper ring portion area.

[0009] Furthermore, a stirring spiral is provided on the portion of the stirring rod extending into the upper ring region.

[0010] Furthermore, the outer electrode includes a plurality of outer electrode plates spaced apart and arranged inside the filter ring, and a filter area of ​​the filter ring is formed between adjacent outer electrode plates.

[0011] Furthermore, the drainage pipe is connected to the processing tank at the top of the sludge chamber.

[0012] Furthermore, the treatment device also includes a conversion shell, in which a second filter element is provided, and the filter element divides the conversion shell into a first chamber and a second chamber. The conversion shell is connected with the top of the sludge chamber in the first chamber, and a first regulating valve is provided between the conversion shell and the sludge chamber; the drain pipe is connected with the first chamber so that the drain pipe is connected with the sludge chamber through the conversion shell; the conversion shell is connected with an inlet pipe and an external discharge pipe in the second chamber.

[0013] Furthermore, the second filter element includes a filter plate laterally arranged in the conversion shell, and the first cavity is located at the lower side of the second cavity.

[0014] Furthermore, the filter ring includes a hollow support ring and a filter cloth covering the support ring, the support ring is provided with a mounting hole, and the external electrode includes an external electrode plate that can be mounted in the mounting hole.

[0015] Furthermore, the drainage pipe is provided with a delivery pump.

[0016] Furthermore, the vertical dimension of the upper ring portion is greater than the vertical dimension of the lower ring portion.

[0017] The beneficial effect of the present invention is that the problems existing in the prior art are effectively solved by performing electric wall breaking treatment on the water injection sludge in the treatment tank and reducing the soluble phosphorus in the sludge by introducing water into and discharging water from the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It is a schematic side cross-sectional structure diagram of an embodiment of the present invention.

[0020] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at A in the illustrated embodiment.

[0021] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure of point B in the illustrated embodiment.

[0022] Wherein: 1. tank body; 2. filter ring; 201. upper ring; 202. lower ring; 3. sludge chamber; 4. filter chamber; 5. slurry outlet; 6. feed inlet; 701. stirring rod; 702. blade; 8. inner electrode cylinder; 9. outer electrode plate; 10. water inlet pipe; 11. drain pipe; 12. stirring spiral; 13. conversion shell; 14. second filter element; 15. first chamber; 16. second chamber; 17. first regulating valve; 18. external discharge pipe; 19. support ring; 20. filter cloth; 21. mounting hole; 22. delivery pump. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0024] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "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 invention 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 invention.

[0026] In the present invention, 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 one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] In the present invention, if Figure 1-2As shown, a sludge electric wall breaking and dehydration treatment device is provided, including a treatment tank, the treatment tank including a tank body 1, a filter ring 2 arranged on the inner side of the tank body 1, the tank body 1 is divided into a sludge chamber 3 and a filter chamber 4 inside and outside the filter ring 2 respectively, the treatment tank is provided with a feed inlet 6 at the top of the sludge chamber and a slurry outlet 5 at the bottom, the filter ring 2 is divided into an upper ring part 201 and a lower ring part 202; a stirring member is arranged in the sludge chamber 3 at the lower ring part 202; an electrode member is arranged in the upper ring part 201, including an outer electrode arranged on the filter ring 2 and an inner electrode arranged on the inner layer of the filter ring 2, and an electric wall breaking space for sludge is formed between the outer electrode and the inner electrode; a water inlet pipe 10 is connected to the treatment tank; a drainage pipe 11 is connected to the bottom of the filter chamber 4.

[0029] The sludge electric wall breaking and dehydration treatment device of the present invention allows the sludge to be treated to enter the sludge chamber from the top of the tank body 1. At this time, water is passed into the tank body 1 through the water inlet pipe 10, and the sludge in the sludge chamber 3 is stirred by the stirring element to destroy the lumps and air bags in the sludge, and at the same time increase the water content and fluidity of the sludge in the sludge chamber 3. After the sludge in the sludge chamber is stirred for a certain period of time, an electric wall breaking field can be formed between the outer electrode and the inner electrode to perform electric wall breaking treatment on the sludge. In this process, the sludge in the sludge chamber 3 flows inside through the stirring of the stirring element, so as to promote the sludge in the sludge chamber 3 to be evenly treated by electric wall breaking.

[0030] During this process, the soluble phosphorus-containing substances in the sludge are dissolved in water and enter the filter chamber 4 through the filter ring 2 along with part of the water. The water in the filter chamber 4 can be discharged into the phosphorus recovery tank through the drain pipe 11, thereby reducing the content of soluble phosphorus-containing substances in the sludge in the sludge chamber 3, and reducing the process time and water consumption of repeatedly flushing and washing the sludge to replace the phosphorus-containing substances at the plate and frame filter press.

[0031] After the sludge is treated with electric wall breaking and the soluble phosphorus-containing substances are washed and replaced, a certain amount of water in the filter chamber 4 can be discharged from the drain pipe 11, so that the water content of the sludge in the sludge chamber 3 decreases to a certain extent. At this time, the sludge in the sludge chamber 3 can be discharged through the slurry outlet 5. At this time, after the sludge is washed with electric wall breaking and stirred, the lumps and air bags in the sludge disappear, and the water content is uniform and the fluidity is good, which is suitable for pipeline transportation.

[0032] In the present invention, the filter ring 2 is divided into an upper ring portion 201 and a lower ring portion 202, and a stirring member is used to stir the sludge at the lower ring portion 202, and an electrode member performs electric wall breaking treatment at the upper ring portion 201, so as to reduce the influence of the stirring member on the electric wall breaking field, and at the same time facilitate concentrated electric load to perform high-intensity treatment on the sludge in the upper ring portion 201 area.

[0033] In the illustrated embodiment, a further optimized setting of the present invention is that, as shown in the figure, the stirring member includes a stirring rod 701 and a blade 702 arranged on the stirring rod 701; the stirring rod extends to the upper circle 201, and the inner electrode is arranged on the portion of the stirring rod 701 in the upper circle 201 area.

[0034] As shown in the figure, the inner electrode is arranged on the stirring rod 701, which can facilitate the arrangement of the inner electrode. At the same time, when the stirring element rotates, the inner electrode can be driven to rotate to promote the flow of sludge on the surface of the inner electrode and prevent sludge agglomeration on the surface of the inner electrode from affecting the electric wall breaking effect.

[0035] Preferably, a further optimized setting of the present invention is that the stirring rod is provided with a stirring screw 12 at the portion extending into the upper ring area. As shown in the figure, by providing the stirring screw 12 at the stirring rod at the inner electrode position, the sludge flow at the inner electrode position can be promoted, so as to further promote the sludge flow in the sludge chamber 3, so that when the inner electrode and the outer electrode perform electrical wall breaking, the sludge in the sludge chamber 3 can be processed more evenly.

[0036] The stirring screw 12 is preferably an insulated stirring screw 12 .

[0037] Regarding the setting of the stirring screw 12 and the inner electrode, in the illustrated embodiment, to be more specific, as shown in the figure, the inner electrode is set in the structural form of an inner electrode tube 8, the inner electrode tube 8 is sleeved on the outside of the stirring rod 701, and multiple sections of the inner electrode tube 8 are arranged at vertical intervals. The stirring screw 12 is arranged at the end position of the inner electrode tube 8, so as to reduce the influence of the stirring screw on the electrical wall breaking between the inner electrode tube 8 and the outer electrode plate 9. The stirring screw 12 can also be used to promote the sludge flow in the stirring rod 701 area, so as to promote the sludge flow at the position of the inner electrode tube 8, and prevent the problem of low electrical wall breaking efficiency caused by sludge agglomeration and gas encapsulation at the position of the inner electrode tube 8.

[0038] In the illustrated embodiment, with regard to the arrangement of the external electrode, more specifically, as shown in the figure, the external electrode includes a plurality of external electrode plates 9 arranged at intervals on the inner side of the filter ring 2, and a filtering area of ​​the filter ring 2 is formed between adjacent external electrode plates 9.

[0039] Specifically, the filter ring 2 includes a hollow rigid ring portion and a filter cloth 20 attached to the filter area, and the outer electrode plate 9 is fixed on the rigid ring portion, thereby completing the installation of the outer electrode plate 9.

[0040] By such an arrangement, the water filtering capacity of the upper ring portion 201 of the filter ring 2 can be ensured.

[0041] In a preferred embodiment, a further optimized setting of the present invention is that the drain pipe 11 is connected to the treatment tank at the top of the sludge chamber 3. As shown in the figure, by connecting the drain pipe 11 to the top of the sludge chamber 3, the water in the filter chamber 4 can be continuously circulated into the sludge chamber 3 when the sludge is subjected to water washing replacement and electric wall breaking treatment, which can improve the water washing replacement efficiency of soluble phosphorus-containing substances in the sludge, and can also promote the flow of sludge in the sludge chamber 3 by circulating the water into the sludge chamber 3, so that the sludge electric wall breaking is more uniform. At the same time, the sludge remaining in the water in the filter chamber 4 can also be circulated to the sludge chamber 3 to prevent the filter chamber 4 from being blocked.

[0042] A further optimization of the present invention is that, in the illustrated embodiment, more specifically, the treatment device also includes a conversion shell 13, a filter element is provided in the conversion shell 13, and the filter element divides the conversion shell 13 into a first chamber 15 and a second chamber 16, the conversion shell 13 is connected with the top of the sludge chamber 3 in the first chamber 15, and a first regulating valve 17 is provided between the conversion shell 13 and the sludge chamber 3; the drain pipe 11 is connected with the first chamber 15, so that the drain pipe 11 is connected with the sludge chamber 3 through the conversion shell 13; the conversion shell 13 is connected with an inlet pipe 10 and an external discharge pipe 18 in the second chamber 16.

[0043] As shown in the figure, in the process of water washing, replacement and electric wall breaking, water in the filter chamber 4 can flow into the first chamber 15 of the conversion shell 13 through the drain pipe 11. At this time, the first regulating valve 17 is opened to complete the water circulation between the filter chamber 4 and the sludge chamber. When the water in the filter chamber 4 needs to be discharged, the first regulating valve 17 is closed. At this time, the water in the filter chamber 4 flows to the first chamber 15 through the drain pipe 11, and the water filtered by the filter element enters the second chamber 16, and then the water is discharged to the phosphorus recovery tank through the external discharge pipe 18 for phosphorus recovery. Among them, the sludge filtered by the filter element can reduce the content of sludge entering the phosphorus recovery tank. When the water inlet pipe 10 needs to pass water into the tank body 1, the first regulating valve 17 is opened. At this time, the water entering the water inlet pipe 10 enters the second chamber 16 and then backwashes the filter element. The water enters the tank body 1 through the first chamber 15 to complete the water replenishment in the tank body 1.

[0044] It can be seen that the present invention can provide water with less mud content to the phosphorus recovery pool through the cooperation of the drainage pipe 11 and the conversion shell 13, and can also complete the cleaning of the sludge in the filter chamber 4. The filter element is cleaned by using the water inlet pipe 10 to inlet water, achieving multiple goals at one stroke.

[0045] In the illustrated embodiment, more specifically, as shown in the figure, the second filter element 14 includes a filter plate laterally arranged in the conversion shell, and the first cavity 15 is located at the lower side of the second cavity 16 .

[0046] In this way, when water is discharged to the outside through the drain pipe 11 and the external discharge pipe 18, the material filtered by the filter element in the first chamber 157 is more likely to be deposited downward, so as to reduce the sludge adhering to the surface of the first filter element during this process. When water is passed from the water inlet pipe 10 to the sludge chamber 3, the sludge in the first chamber 15 can be easily flushed into the sludge chamber 3.

[0047] In the illustrated embodiment, more specifically, the drainage pipe 11 is connected to the upper section of the first chamber 15. By such an arrangement, when the drainage pipe 11 passes water into the first chamber 15, the scouring effect of the water on the sludge deposited at the bottom of the first chamber 15 can be reduced.

[0048] In the illustrated embodiment, for the structure of the present invention, more specifically, as shown in the figure, the filter ring 2 includes a hollow support ring 19, a filter cloth 20 covering the support ring 19, the support ring 19 is provided with a mounting hole 21, and the external electrode includes an external electrode plate that can be installed in the mounting hole 21.

[0049] As shown in the figure, the support ring 19 adopts a hard hollow support ring 19, and the part of the support ring 19 outside the mounting hole 21 is covered with a filter cloth 20 to filter the sludge in the inner layer of the filter ring 2. By installing electrode plates in the mounting holes 21 spaced apart in the support ring 19, the support ring 19 of the frame structure can have sufficient supporting strength, and the filter cloth 20 between adjacent electrode plates can also be used to filter outward, so that the upper section of the filter ring 2 can be evenly filtered.

[0050] In the illustrated embodiment, the present invention is further optimized in that the drainage pipe 11 is provided with a delivery pump 22. As shown in the figure, by providing the delivery pump 22, the efficiency of the connecting pipe pumping water from the filter chamber 4 can be improved. The sludge and water in the filter chamber 4 can also be conveniently pumped out to the conversion shell 13.

[0051] In the illustrated embodiment, the present invention is further optimized in that the vertical dimension of the upper ring 201 is greater than the vertical dimension of the lower ring 202. As shown in the figure, the upper ring 201 can have enough space to provide an electric wall breaking area for electric wall breaking treatment of sludge.

[0052] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0053] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A sludge electric wall breaking and dehydration treatment device, characterized in that: include: A treatment tank, the treatment tank comprising a tank body and a filter ring arranged inside the tank body, the tank body is divided into a sludge chamber and a filter chamber inside and outside the filter ring respectively, the treatment tank is provided with a feed inlet at the top of the sludge chamber and a slurry outlet at the bottom, and the filter ring is divided into an upper ring part and a lower ring part; A stirring member, disposed in the sludge chamber at the lower ring portion; The electrode member is arranged on the upper ring part, including an outer electrode arranged on the filter ring and an inner electrode arranged on the inner layer of the filter ring, and a sludge electric wall breaking space is formed between the outer electrode and the inner electrode; A water inlet pipe connected to the treatment tank; A drainage pipe connected to the bottom of the filter chamber; The stirring member comprises a stirring rod and blades arranged on the stirring rod; The stirring rod extends to the upper ring portion, and the inner electrode is disposed on a portion of the stirring rod in the upper ring portion area.

2. The sludge electric wall breaking and dehydration treatment device according to claim 1 is characterized in that: The stirring rod is provided with a stirring spiral at the portion extending into the upper ring area.

3. The sludge electric wall breaking and dehydration treatment device according to claim 1 is characterized in that: The outer electrode comprises a plurality of outer electrode plates which are arranged at intervals inside the filter ring, and a filter area of ​​the filter ring is formed between adjacent outer electrode plates.

4. The sludge electric wall breaking and dehydration treatment device according to claim 1 is characterized in that: The drainage pipe is communicated with the processing tank at the top of the sludge chamber.

5. The sludge electric wall breaking and dehydration treatment device according to claim 4 is characterized in that: The treatment device further comprises a conversion shell, a second filter is arranged in the conversion shell, the filter separates the conversion shell into a first chamber and a second chamber, the conversion shell is connected with the top of the sludge chamber at the first chamber, and a first regulating valve is arranged between the conversion shell and the sludge chamber; The drain pipe is in communication with the first chamber, so that the drain pipe is in communication with the sludge chamber through the conversion shell; The conversion shell is connected with a water inlet pipe and an external discharge pipe in the second chamber.

6. The sludge electric wall breaking and dehydration treatment device according to claim 5 is characterized in that: The second filter element includes a filter plate disposed transversely in the conversion housing, and the first cavity is located at a lower side of the second cavity.

7. The sludge electric wall breaking and dehydration treatment device according to claim 1 is characterized in that: The filter ring includes a hollow support ring and a filter cloth covering the support ring. The support ring is provided with a mounting hole. The external electrode includes an external electrode plate that can be mounted in the mounting hole.

8. The sludge electric wall breaking and dehydration treatment device according to claim 1 is characterized in that: The drainage pipe is provided with a delivery pump.

9. The sludge electric wall breaking and dehydration treatment device according to claim 1, characterized in that: The vertical dimension of the upper ring portion is greater than the vertical dimension of the lower ring portion.

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