Sludge precipitator and mud-water separation device
By using a multi-fold plate structure sludge settling device and horizontal flow filter bag in river dredging, efficient separation of sludge and water is achieved, solving the problem of high water content and improving treatment efficiency and environmental friendliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIGE ENVIRONMENTAL TECH (JIANGSU) CO LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-05
AI Technical Summary
Existing river dredging methods often result in silt with excessively high water content, leading to high transportation and storage costs, difficulty in handling, and potential secondary pollution.
Design a sludge settling device that adopts a multi-fold plate structure and a horizontal flow filter bag. The multi-fold plate separates sludge and water, and the design of the sludge discharge hopper and the drain outlet achieves efficient sedimentation and separation of sludge.
It significantly reduces the water content of sludge, making it easier for subsequent treatment and reuse, reducing transportation and storage costs, and avoiding secondary pollution.
Smart Images
Figure CN224199273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of river dredging technology, specifically to a sludge sedimentation device and a mud-water separation device. Background Technology
[0002] In the practice of river management and maintenance, silt treatment has always been an important and complex aspect. Over long periods of natural sedimentation and the influence of human activities, rivers accumulate large amounts of silt. This silt not only occupies the effective flow cross-section of the river, affecting its flood control capacity, but also poses a potential threat to the aquatic environment due to its high pollutant content. Therefore, regular dredging of rivers is a necessary measure to ensure unobstructed river flow and maintain the balance of the aquatic ecosystem.
[0003] Traditional river dredging methods primarily employ mechanical or hydraulic suction to directly remove silt from the riverbed and transfer it to a dumping site. However, this method presents a significant problem: the directly pumped-out silt has an extremely high water content, typically containing large amounts of free and bound water, often exceeding 95%. This high-water-content silt not only has a large volume, increasing transportation and storage costs, but also makes it difficult to process and utilize subsequently. Furthermore, high-water-content silt is prone to seepage during dumping, causing secondary pollution and adversely affecting the surrounding environment.
[0004] To overcome this challenge, the industry has been exploring more efficient and environmentally friendly sludge treatment technologies. Currently, although some solutions have been attempted to reduce the moisture content of sludge through natural drying, mechanical dehydration, or chemical conditioning, these methods are either time-consuming and inefficient, costly and difficult to scale up, or may introduce new pollutants during the treatment process, affecting the subsequent utilization value of the sludge.
[0005] In view of this, it is necessary to improve the existing processing equipment to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a sludge settling device to solve the problem of high water content in sludge generated from existing river dredging.
[0007] To achieve the above objectives, this utility model provides a sludge settling device, which includes a settling tank and a plurality of multi-folded plates disposed within the settling tank. The settling tank is provided with an inlet for introducing sludge-water, an outlet for discharging sludge-water disposed on the side away from the inlet, and a sludge discharge outlet disposed at the bottom for discharging sludge. The plurality of multi-folded plates are disposed between the inlet and the outlet and are arranged in parallel. The spacing direction of the multi-folded plates is consistent with the spacing direction of the inlet and the outlet. Each multi-folded plate includes at least a first inclined plate disposed at the bottom and a second inclined plate connected to the upper end of the first inclined plate. Both the first and second inclined plates are inclined to the vertical and horizontal directions, and the angle between the first inclined plate and the horizontal direction is greater than the angle between the second inclined plate and the vertical direction.
[0008] As a further improvement of this utility model, the first inclined plates of the plurality of multi-fold plates are arranged in parallel, and the second inclined plates of the plurality of multi-fold plates are arranged in parallel.
[0009] As a further improvement of this utility model, the distance between two adjacent multi-fold plates is 30cm.
[0010] As a further improvement of this utility model, the inlet is located below the middle of the sedimentation tank, and the outlet is located above the middle.
[0011] As a further improvement of this utility model, the angle between the first inclined plate and the horizontal direction is 60 degrees to 80 degrees.
[0012] As a further improvement of this utility model, the angle between the first inclined plate and the horizontal direction is 70 degrees.
[0013] As a further improvement of this utility model, the angle between the second inclined plate and the horizontal direction is 30 degrees to 50 degrees.
[0014] As a further improvement of this utility model, the angle between the second inclined plate and the horizontal direction is 40 degrees.
[0015] As a further improvement of this utility model, the number of sludge discharge ports is multiple, and the sludge settling device also includes a sludge discharge hopper communicating with the sludge discharge ports.
[0016] This utility model also provides a mud-water separation device, which includes a sludge sedimentation device as described above and a horizontal flow filter bag connected to the sludge discharge port of the sludge sedimentation device. One end of the horizontal flow filter bag is provided with a water inlet and the other end is provided with a water outlet. At least one separation layer is provided inside the horizontal flow filter bag along the height direction, and the separation layer extends along the plane direction.
[0017] The beneficial effects of this utility model are: the sludge settling device and mud-water separation device of this utility model, by setting multiple folding plates in the sludge settling device, can better achieve mud-water separation of river sludge and water, so that the water content of the treated sludge is greatly reduced, making it easier to reuse later. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the sludge sedimentation device of this utility model;
[0019] Figure 2 This is a front structural diagram of the sludge sedimentation device of this utility model;
[0020] Figure 3 This is a front cross-sectional view of the sludge sedimentation device of this utility model;
[0021] Figure 4 This is a schematic diagram of the horizontal flow filter bag of the mud-water separation device of this utility model;
[0022] Figure 5 This is a cross-sectional structural diagram of the horizontal flow filter bag of the mud-water separation device of this utility model. Detailed Implementation
[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0026] like Figures 1 to 5 As shown, the mud-water separation device of this utility model includes a sludge settling tank 1 and a horizontal flow filter bag 2 connected to the sludge discharge port 113 of the sludge settling tank 1.
[0027] like Figures 1 to 3 As shown, the sludge settling device 1 includes a settling tank 11 and a plurality of multi-fold plates 12 disposed within the settling tank 11.
[0028] The sedimentation tank 11 is provided with an inlet 111 for introducing sludge water, an outlet 112 located on the side away from the inlet 111 for discharging sludge water, and a sludge discharge outlet 113 located at the bottom for discharging sludge. Sludge with water is introduced into the sedimentation tank 11 through the inlet 111. After being separated by the multi-fold plate 12, the sludge with a small amount of water is discharged from the sludge discharge outlet 113 to be filtered for secondary filtration by the horizontal flow filter bag 2. The water with a small amount of sludge flows out from the outlet 112 and can be directly discharged into the river.
[0029] Multiple multi-fold plates 12 are arranged between the inlet 111 and the outlet 112 and are arranged in parallel. The spacing direction of the multi-fold plates 12 is consistent with the spacing direction of the inlet 111 and the outlet 112.
[0030] The multi-fold plate 12 includes at least a first inclined plate 121 disposed at the bottom and a second inclined plate 122 connected to the upper end of the first inclined plate 121. The first inclined plate 121 and the second inclined plate 122 are both inclined to the vertical and horizontal directions, and the angle between the first inclined plate 121 and the horizontal direction is greater than the angle between the second inclined plate 122 and the vertical direction.
[0031] In this embodiment, each multi-fold plate 12 is divided into two segments, namely the first inclined plate 121 and the second inclined plate 122. Of course, more segments can be set in other embodiments.
[0032] In water treatment plants using single-angle inclined plate sedimentation tanks, the flow velocity fluctuations are significantly affected by the influent as water flows from the lower distribution area upwards along the inclined plate, which is detrimental to the settling of particulate matter from river silt. Adopting a two-section arrangement of the inclined plate can achieve the following two advantages:
[0033] Firstly, compared to the single-angle inclined plate sedimentation tanks commonly used in water plants, river dredging water contains more large-diameter silt. The increased inclination angle of the first inclined plate 121 allows larger silt particles to settle quickly, while reducing the possibility of silt accumulation in this area. This facilitates the sliding of silt attached to the first inclined plate 121 to the bottom, thereby improving the efficiency of the sedimentation tank 11.
[0034] Secondly, the inclination angle of the second inclined plate 122 is reduced. On the one hand, this reduces the fluctuation of the flow velocity. On the other hand, the water flow impacts the second inclined plate 122 from the bottom, causing the velocity component of this section to be more inclined to the normal direction of the second inclined plate 122. This is conducive to the remaining fine particles contacting the second inclined plate 122 and then settling down by gravity.
[0035] The first inclined plates 121 of the multiple multi-fold plates 12 are arranged in parallel, and the second inclined plates 122 of the multiple multi-fold plates 12 are arranged in parallel.
[0036] The distance between two adjacent multi-fold plates 12 is 30 cm. This distance is more suitable for the sedimentation of particulate matter in river silt.
[0037] The inlet 111 is located below the middle of the sedimentation tank 11, and the outlet 112 is located above the middle.
[0038] The first inclined plate 121 has an angle of 60 to 80 degrees with the horizontal direction. Compared with the 60-degree inclination angle of the inclined plate in the existing sedimentation tank in the water plant, the first inclined plate 121 has a larger inclination angle, which is more conducive to the sedimentation of large-diameter particles.
[0039] In this embodiment, the angle between the first inclined plate 121 and the horizontal direction is 70 degrees.
[0040] The second inclined plate 122 has an angle of 30 to 50 degrees with the horizontal direction. Compared with the 60-degree inclination angle of the inclined plate in the existing sedimentation tank in the water plant, the second inclined plate 122 has a smaller inclination angle, which is more conducive to the sedimentation of fine particles.
[0041] In this embodiment, the angle between the second inclined plate 122 and the horizontal direction is 40 degrees.
[0042] The number of sludge discharge ports 113 is multiple, and the sludge settling tank 1 also includes a sludge discharge hopper 114 communicating with the sludge discharge ports 113. In this embodiment, the sludge discharge hopper 114 protrudes into the sludge discharge port 113. Preferably, the inlet of the sludge discharge hopper 114 is higher than the sludge discharge port 113, so that the sludge can be discharged more effectively.
[0043] like Figure 4 and Figure 5 As shown, the horizontal flow filter bag 2 has an inlet 21 at one end and an outlet 22 at the other end. The horizontal flow filter bag 2 has at least one separation layer 23 along the height direction. The separation layer 23 extends along the plane direction and can improve the sedimentation effect of sludge. In this embodiment, each horizontal flow filter bag 2 has two separation layers 23 spaced apart along the height direction.
[0044] The mud-water separation device of this utility model is used as follows:
[0045] The silt with water is discharged into the silt sedimentator 1 through the inlet 111 via the pipe. After separation by the multi-fold plate 12, the water with a small amount of silt is directly discharged into the river through the outlet 112. The silt with a small amount of water is discharged from the discharge port 113 through the discharge hopper 114 to the horizontal flow filter bag 2 for secondary filtration. The water is discharged from the outlet 22, while the silt remains in the horizontal flow filter bag 2 for ecological planting.
[0046] The sludge settling device 1 and mud-water separation device of this utility model can better separate the mud and water in the river by setting a multi-fold plate 12 in the sludge settling device 1, so that the water content of the treated sludge is greatly reduced and it is easy to reuse later.
[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A sludge settling device, characterized in that: The sludge settling device includes a settling tank and multiple multi-fold plates disposed within the settling tank. The settling tank has an inlet for introducing sludge-water, an outlet for discharging sludge-water disposed on the side away from the inlet, and a sludge discharge outlet disposed at the bottom for discharging sludge. The multiple multi-fold plates are disposed between the inlet and the outlet and are arranged in parallel. The spacing direction of the multi-fold plates is consistent with the spacing direction of the inlet and the outlet. Each multi-fold plate includes at least a first inclined plate disposed at the bottom and a second inclined plate connected to the upper end of the first inclined plate. Both the first and second inclined plates are inclined to the vertical and horizontal directions, and the angle between the first inclined plate and the horizontal direction is greater than the angle between the second inclined plate and the vertical direction.
2. The sludge settling device according to claim 1, characterized in that: The first inclined plates of the multiple multi-fold plates are arranged in parallel, and the second inclined plates of the multiple multi-fold plates are arranged in parallel.
3. The sludge settling device according to claim 1, characterized in that: The distance between two adjacent multi-fold plates is 30cm.
4. The sludge settling device according to claim 1, characterized in that: The inlet is located below the middle of the sedimentation tank, and the outlet is located above the middle.
5. The sludge settling device according to claim 1, characterized in that: The angle between the first inclined plate and the horizontal direction is 60 to 80 degrees.
6. The sludge settling device according to claim 5, characterized in that: The angle between the first inclined plate and the horizontal direction is 70 degrees.
7. The sludge settling device according to claim 5 or 6, characterized in that: The angle between the second inclined plate and the horizontal direction is 30 to 50 degrees.
8. The sludge settling device according to claim 7, characterized in that: The second inclined plate makes an angle of 40 degrees with the horizontal direction.
9. The sludge settling device according to claim 1, characterized in that: The number of sludge discharge ports is multiple, and the sludge settling tank also includes a sludge discharge hopper connected to the sludge discharge ports.
10. A mud-water separation device, characterized in that: The mud-water separation device includes a sludge settling device as described in any one of claims 1-9, and a horizontal flow filter bag connected to the sludge discharge port of the sludge settling device. One end of the horizontal flow filter bag is provided with a water inlet, and the other end is provided with a water outlet. At least one separation layer is provided inside the horizontal flow filter bag along the height direction, and the separation layer extends along the plane direction.