A filter dam of the up-water type and a circulating water purification system using the same

Abstract

The utility model discloses a kind of filtering dam of up-water type and the circulating water purification system applying the filtering dam, the circulating water purification system includes the sedimentation tank, aeration tank and purification pond communicated sequentially, the sedimentation tank and aeration tank between, the aeration tank and purification pond between All be equipped with the filtering dam main body, the filtering dam main body is equipped with the partition plate extending to the inside wall of two sides along its width direction and adhering, water body enters water intake basin and enters filter tank by the partition plate bottom flow channel, the filter layer is raised by the pad layer, it is convenient for water body to realize upward flow filtration after being completely distributed in the bottom of filter tank, can effectively remove sludge particulate matter in water body, sludge also accumulates in filter tank bottom, will not be accumulated on filter tank side wall, when cleaning after filtration, the filter layer can be replaced by the upper opening of filter tank, convenient and fast, effectively reduce the cost of cleaning in processing process.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture wastewater treatment technology, specifically to a water-filled filter dam and a circulating water purification system using the filter dam. Background Technology

[0002] Pond aquaculture is an important form of aquaculture in our city and a key area requiring attention in our city's water environment management. Pond aquaculture discharges large amounts of pollutants, especially during periods of concentrated discharge, which often leads to a sharp decline in water quality in downstream water bodies and national and provincial monitoring sections. The aquaculture methods are mainly small-scale, traditional, and extensive, with problems such as overly high stocking densities. This results in nitrogen and phosphorus pollution of the aquaculture water due to large amounts of uneaten feed, aquatic animal excrement, and disruption of the balance of some aquatic plants, leading to serious environmental problems such as eutrophication of surrounding water bodies.

[0003] Currently, traditional wastewater treatment technologies are widely used to treat aquaculture wastewater. This involves treating the wastewater through multiple treatment ponds with different functions. When the wastewater is transferred between these ponds, it is usually filtered using filter dams. Most existing filter dams are vertical. When a large flow of water passes through a vertical filter dam, the water overflows, affecting the filtration effect. Furthermore, the sludge in the filter ponds of vertical filter dams is widely distributed and requires manual shoveling for cleaning, making sludge cleaning difficult after wastewater treatment. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes a water-filled filter dam and a circulating water purification system using the filter dam, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A water-filled filter dam includes a filter dam body, wherein a partition plate extending along its width direction to fit against the inner walls on both sides is provided inside the filter dam body, thereby dividing the filter dam body into an inlet pool and a filter pool, and a flow channel connecting the inlet pool and the filter pool is provided at the bottom of the partition plate. The filter tank is equipped with an outlet pipe, a filter assembly, and a cushion layer. The height of the cushion layer is not less than the height of the flow channel. The filter assembly is placed above the cushion layer and its edge is attached to the inner wall of the filter tank. The height of the inlet of the outlet pipe is not less than the height of the top of the filter assembly.

[0005] As an improvement to the above scheme, there are two partition plates, namely partition plate one and partition plate two, which divide the filter dam body into filter pool one, water inlet pool and filter pool two along the length direction.

[0006] As an improvement to the above solution, the bottom of the first partition plate is provided with a flow channel 1 connecting the water inlet pool and the first filter pool, and the bottom of the second partition plate is provided with a flow channel 2 connecting the water inlet pool and the second filter pool.

[0007] As an improvement to the above solution, the filter assembly includes at least three filter layers, and the particle size of the filter media in the filter layers decreases from bottom to top along the thickness direction of the filter assembly.

[0008] As an improvement to the above solution, the filter assembly includes a first filter layer, a second filter layer, and a third filter layer arranged from top to bottom. The filter media particle size of the first filter layer is smaller than that of the second filter layer, and the filter media particle size of the second filter layer is smaller than that of the third filter layer.

[0009] As an improvement to the above solution, the water inlet pool is provided with a water inlet pipe that communicates with the outside.

[0010] As an improvement to the above solution, the pad layer is composed of several pad blocks, which are arranged in an array at the bottom of the filter tank.

[0011] A circulating water purification system includes a sedimentation tank, an aeration tank, and a purification tank connected in sequence, wherein the filter dam body is provided between the sedimentation tank and the aeration tank, and between the aeration tank and the purification tank.

[0012] The beneficial effects of this utility model are as follows: the inlet pool and the filter pool are separated by a partition plate. After the water enters the inlet pool, it enters the filter pool through the flow channel at the bottom of the partition plate. The pad layer elevates the filter layer, which facilitates the complete distribution of water at the bottom of the filter pool to achieve upward flow filtration. This can effectively remove sludge particles from the water. The sludge also accumulates at the bottom of the filter pool and will not accumulate on the side wall of the filter pool. When cleaning after filtration, the filter layer can be replaced through the upper opening of the filter pool, which is convenient and quick, and effectively reduces the cleaning cost in the process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the filter dam of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the main structure of the filter dam of this utility model. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the circulating water purification system of this utility model.

[0016] Wherein: 1-Main body of filter dam; 2-Baffle plate; 21-Baffle plate one; 22-Baffle plate two; 3-Inlet pool; 4-Filter pool; 41-Filter pool one; 42-Filter pool two; 5-Flow channel; 51-Flow channel one; 52-Flow channel two; 6-Outlet pipe; 7-Filter assembly; 71-First filter layer; 72-Second filter layer; 73-Third filter layer; 8-Material layer; 81-Material block. Detailed Implementation

[0017] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0018] like Figures 1 to 2 As shown, a water-filled filter dam includes a filter dam body 1. The filter dam body 1 is provided with a partition plate 2 extending along its width direction to fit against the inner walls on both sides, thereby dividing the filter dam body 1 into an inlet pool 3 and a filter pool 4. The bottom of the partition plate 2 is provided with a flow channel 5 connecting the inlet pool 3 and the filter pool 4. The filter tank 4 is provided with an outlet pipe 6, a filter assembly 7 and a pad layer 8. The height of the pad layer 8 is not less than the height of the flow channel 5. The filter assembly 7 is placed above the pad layer 8 and its edge is attached to the inner wall of the filter tank 4. The height of the inlet of the outlet pipe 6 is not less than the height of the top of the filter assembly 7.

[0019] In the technical solution of the filter dam body 1 of this utility model, the filter dam body 1 is composed of an inlet pool 3 and a filter pool 4. The inlet pool 3 and the filter pool 4 are separated by a partition plate 2. The partition plate 2 is integrally formed with the filter dam body 1. The inlet pool 3 and the filter pool 4 are connected by a flow channel 5 provided at the bottom of the partition plate 2. The inlet pool 3 is connected to the outside by an inlet pipe. The inlet pipe introduces external water into the inlet pool 3, enters the filter pool 4 through the flow channel 5, passes through the filter assembly 7 from bottom to top to achieve upward flow filtration, and flows out through the outlet pipe 6 near the top of the filter pool 4. It should be noted that the filter tank 4 is provided with a filter layer for filtering water and a pad layer 8 for supporting the filter assembly 7. Under the elevation effect of the pad layer 8, the bottom end face of the filter assembly 7 is higher than the flow channel 5 at the bottom of the partition plate 2, so that the water can fully enter the filter tank 4 and then complete the filtration along the bottom end face of the filter assembly 7.

[0020] It should be noted that the pad layer 8 is composed of several pad blocks 81, which are arranged in an array at the bottom of the filter pool 4 to support the filter assembly 7. The first filter layer 71, the second filter layer 72, and the third filter layer 73 are placed into the filter pool 4 layer by layer through the upper opening of the filter pool 4. When cleaning after filtration, the filter layers can be removed and replaced layer by layer through the upper opening of the filter pool 4, which is convenient and quick. In another cleaning method, workers can stand on the top of the filter dam body 1 and directly flush the filter assembly 7 with a water jet to push the filtered dirt inside the filter layer back to the bottom of the filter pool 4, which is convenient for manual cleaning.

[0021] In one embodiment of this utility model, there are two partition plates 2, namely partition plate one 21 and partition plate two 22. The partition plate one 21 and partition plate two 22 are integrally formed with the filter dam body 1, dividing the filter dam body 1 into filter pool one 41, water inlet pool 3 and filter pool two 42 along the length direction. The partition plate 21, the partition plate 22, and the inner walls of both sides of the filter dam body 1 form the water inlet pool 3. The partition plate 21 and one end of the filter dam body 1 form the filter pool 41. The partition plate 22 and the other end of the filter dam body 1 form the filter pool 42. Furthermore, in the above scheme, the bottom of the partition plate 21 is provided with a flow channel 51 connecting the inlet pool 3 and the filter pool 41, and the bottom of the partition plate 22 is provided with a flow channel 52 connecting the inlet pool 3 and the filter pool 42. The filter components 7 are provided in both the filter pool 41 and the filter pool 42, and the filter components 7 are supported by the pad layer 8. After the water enters the inlet pool 3 through the inlet pipe, it enters the filter pool 41 and the filter pool 42 through the flow channel 51 and the flow channel 52 respectively, which has a higher filtration efficiency than a single filter pool 4.

[0022] In the technical solution of the filter component 7 of this utility model, the filter component 7 includes at least three filter layers, and the particle size of the filter material in the filter layer decreases from bottom to top along the thickness direction of the filter component 7.

[0023] Specifically, the filter assembly 7 includes a first filter layer 71, a second filter layer 72, and a third filter layer 73 arranged from top to bottom. The filter media particle size of the first filter layer 71 is smaller than that of the second filter layer 72, and the filter media particle size of the second filter layer 72 is smaller than that of the third filter layer 73. The first filter layer 71 is composed of one or more of activated carbon, fine quartz sand particles or polystyrene foam filter beads, the second filter layer 72 is composed of medium-sized quartz sand particles, and the third filter layer 73 is composed of anthracite or larger quartz sand particles.

[0024] It should be noted that the outer surfaces of the first filter layer 171, the second filter layer 72 and the third filter layer 73 are all provided with a coating layer. After the filter material is coated with this coating layer, it is placed in a frame and then placed into the filter tank 4 layer by layer. During cleaning, the workers can remove the filter layers from the filter tank 4 one by one to clean the sludge accumulated at the bottom of the filter tank.

[0025] like Figure 3 As shown, a circulating water purification system includes a sedimentation tank, an aeration tank, and a purification tank connected in sequence. A filter dam body 1 is provided between the sedimentation tank and the aeration tank, and between the aeration tank and the purification tank. The filter dam body 1 provided between the sedimentation tank and the aeration tank, and between the aeration tank and the purification tank has the same structure. A filter dam is provided between the sedimentation tank and the aeration tank. The filter tank 4 is filled with filter media and is a structure with the functions of filtration, interception, biodegradation, conversion and absorption.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A water-filled filter dam, characterized in that, Includes a filter dam body (1), the filter dam body (1) is provided with a partition plate (2) extending along its width direction to fit against the inner walls on both sides, thereby dividing the filter dam body (1) into an inlet pool (3) and a filter pool (4), the bottom of the partition plate (2) is provided with a flow channel (5) connecting the inlet pool (3) and the filter pool (4); The filter tank (4) is provided with an outlet pipe (6), a filter assembly (7) and a mat layer (8). The height of the mat layer (8) is not lower than the height of the flow channel (5). The filter assembly (7) is placed above the mat layer (8) and its edge is attached to the inner wall of the filter tank (4). The height of the inlet of the outlet pipe (6) is not lower than the height of the top of the filter assembly (7).

2. The water-filled filter dam according to claim 1, characterized in that, There are two partition plates (2), namely partition plate one (21) and partition plate two (22), which divide the filter dam body (1) into filter pool one (41), water inlet pool (3) and filter pool two (42) along the length direction.

3. The water-filled filter dam according to claim 2, characterized in that, The bottom of the first partition plate (21) is provided with a flow channel (51) connecting the water inlet pool (3) and the first filter pool (41), and the bottom of the second partition plate (22) is provided with a flow channel (52) connecting the water inlet pool (3) and the second filter pool (42).

4. The water-filled filter dam according to claim 1, characterized in that, The filter assembly (7) includes at least three filter layers, and the particle size of the filter media in the filter layers decreases from bottom to top along the thickness direction of the filter assembly (7).

5. The water-filled filter dam according to claim 1, characterized in that, The filter assembly (7) includes a first filter layer (71), a second filter layer (72) and a third filter layer (73) arranged from top to bottom. The filter media particle size of the first filter layer (71) is smaller than that of the second filter layer (72), and the filter media particle size of the second filter layer (72) is smaller than that of the third filter layer (73).

6. The water-filled filter dam according to claim 1, characterized in that, The inlet pool (3) is equipped with an inlet pipe that connects to the outside.

7. The water-filled filter dam according to claim 1, characterized in that, The pad layer (8) is composed of several pad blocks (81), which are arranged in an array at the bottom of the filter pool (4).

8. A circulating water purification system, characterized in that, The circulating water purification system using the water-filled filter dam as described in any one of claims 1 to 7 includes a sedimentation tank, an aeration tank, and a purification tank connected in sequence, with the filter dam body (1) connected between the sedimentation tank and the aeration tank, and between the aeration tank and the purification tank.

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