An in-situ adsorption and desorption sewage filtration device

Abstract

The present invention relates to the field of environmental protection equipment, and specifically to an in-situ adsorption and desorption sewage filtering device, which comprises a box body, a support plate for lifting fiber filter material is installed in the box body, a water collecting pipe is rotatably installed in the box body, a scrubbing plate for pressing the fiber filter material against the support plate is installed on the water collecting pipe, a seesaw for guiding the fiber filter material to the bottom of the scrubbing plate is provided on the side of the scrubbing plate, the seesaw is tilted in an inclined shape, a power machine for driving the water collecting pipe to rotate is installed on the box body, two seesaw plates are provided, the two seesaw plates are respectively located on both sides of the scrubbing plate, the distance between the scrubbing plate and the support plate is less than the minimum width of the fiber filter material, a water hole is opened on the pipe wall of the water collecting pipe, and the water hole runs through the water collecting pipe. The in-situ adsorption and desorption sewage filtering device can perform scrubbing and reverse scrubbing alternately, and then perform hot air drying to restore the fiber filter material to the initial fluffy state, thereby restoring the initial filtering performance.

Description

Technical Field

[0001] The invention relates to the field of environmental protection equipment, and in particular to an in-situ adsorption and desorption sewage filtering device. Background Art

[0002] The filtration process is an indispensable procedure in the current water treatment system. Water filtration is mainly completed by filter media. The types of filter media include: quartz sand, activated carbon, fiber bundles, modified fibers, etc. Modified fiber filter media is made of polyester fiber into a sphere or a flat ellipsoid. The fiber filter media has gaps and has a certain elasticity. When used, it is loaded into the filtration equipment and uses its characteristics to absorb impurities in the water. The modified fiber has the advantages of small head loss, high filtration rate, and large pollution interception capacity, which has attracted people's attention.

[0003] However, in actual use, the following problems still exist: 1. The filter media is not cleaned thoroughly, and it is difficult to completely wash off the dirt attached to the inside of the filter media by backwashing alone; 2. The backwashing consumes a lot of water, and the amount of backwashing wastewater is about 2% of the filtered water volume, and the amount of backwashing wastewater is large; 3. The filter media replacement operation is troublesome. Traditional filtering equipment only has a discharge port at the bottom of the equipment. After running for a period of time, the modified fiber filter media is compacted and difficult to remove from the bottom discharge port, which needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide an in-situ adsorption and desorption sewage filtering device with thorough and convenient filter material cleaning in view of the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention discloses an in-situ adsorption and desorption sewage filtration device, comprising a box body, in which a support plate for supporting fiber filter material is installed, and its structural characteristics are: a water collecting pipe is rotatably installed in the box body, and a scrubbing plate for pressing the fiber filter material against the support plate is installed on the water collecting pipe, and a seesaw for guiding the fiber filter material to the bottom of the scrubbing plate is provided on the side of the scrubbing plate, and the seesaw is tilted, and a power machine for driving the water collecting pipe to rotate is installed on the box body.

[0006] After adopting the above structure, the fiber filter material is used to absorb impurities in the water. When the fiber filter material needs to be cleaned, the power machine is started. The power machine drives the water collecting pipe to rotate, and the fiber filter material enters the bottom of the scrubbing plate through the seesaw. The rotating scrubbing plate continuously squeezes and scrubs the fiber filter material. The squeezing action is implemented by the support plate and the scrubbing plate. After that, the power machine is controlled to rotate forward and reverse alternately, prompting scrubbing and reverse scrubbing to be performed alternately, so as to achieve a more thorough cleaning effect on the surface of the modified fiber filter material and the inside of the filter material.

[0007] Regarding the specific structure of the seesaw, there are two seesaws, which are respectively located on both sides of the scrubbing plate. The distance between the scrubbing plate and the supporting plate is smaller than the minimum width of the fiber filter material, so that the scrubbing plate and the supporting plate can squeeze and scrub the fiber filter material.

[0008] Preferably, a water hole is provided on the wall of the water collecting pipe, the water hole penetrates the water collecting pipe, one end of the water collecting pipe extends outward from the box body, and a water outlet is provided at the end of the water collecting pipe extending out of the water collecting pipe. Water filtered by the fiber filter material in the box body can enter the water collecting pipe through the water hole and then be discharged outward through the water outlet.

[0009] Regarding the specific structure of the support plate, the support plate is semicircular, the water collecting pipe is located above the support plate, the support plate surrounds the water collecting pipe and bends downward, and the support plate is grid-shaped. The support plate divides the box into two parts, and the support plate holds up the fiber filter material to prevent the fiber filter material from falling to the bottom of the box.

[0010] Regarding the arrangement structure of the scrubbing plates, a plurality of scrubbing plates are arranged around the water collecting pipe, and a support rod for supporting the scrubbing plates is installed on the water collecting pipe.

[0011] Preferably, a water-distributing plate is installed in the box body, and a plurality of water-distributing holes are opened on the water-distributing plate. The water-distributing plate is located above the support plate, and an upper water inlet pipe for conveying water into the box body is installed on the box body, and the upper water inlet pipe is located above the water-distributing plate. The water-distributing holes are circular holes with a diameter of 8 mm, and the center distance between the two holes is 20 mm. The water-distributing plate evenly distributes the water from the upper water inlet pipe on the fiber filter material, which can reduce the filtration dead angle.

[0012] Preferably, a lower water inlet pipe for conveying water into the box is installed on the box body, and the lower water inlet pipe is located below the support plate. By distributing water at both ends of the upper and lower water inlet pipes, the filtration area can be effectively increased and the filtration efficiency can be improved.

[0013] Preferably, an air inlet pipe for inputting air flow into the box is installed on the box body, the air inlet pipe is located below the support plate, the box body is open upward, and a cover plate for closing the upper opening is installed on the upper part of the box body. The device also includes a heat pump unit and a bag dust removal device. The heat pump unit can be a water source heat pump or an air source heat pump. When in use, the box body is closed by the cover plate, and then the heat pump unit is connected to the air inlet pipe, and the bag dust removal device is connected to the upper water inlet pipe, the lower water inlet pipe and the water outlet. The warm air of the heat pump unit continuously dehumidifies and dries the filter material, and at the same time, the residual impurities in the filter material are thoroughly removed through mechanical stirring and kneading, and the kneaded dust impurities are intercepted by the bag dust removal filter. Due to the synergistic effect of the dehumidification and drying of the heat pump unit and the mechanical stirring and kneading, the filter material can be restored to its initial fluffy state, thereby restoring the initial filtering performance.

[0014] Preferably, a sewage outlet is installed on the box body, and the sewage outlet is located at the lower part of the box body. A switch door is set on the sewage outlet. During the stirring and scrubbing process, the switch door is closed, the fiber filter material is continuously rubbed and squeezed, and the dirt on the surface and inside of the filter material falls off. The sludge after scrubbing is accumulated at the bottom of the box body. Then the switch door is opened, and the sludge impurities are discharged through the sewage outlet, thereby reducing the backwashing time and the backwashing water volume.

[0015] Preferably, a discharge port is provided on the side of the box body, the side edge of the support plate extends to the discharge port, and a sealing door for closing the discharge port is installed on the box body. The device can realize automatic discharge, and when the fiber filter material needs to be replaced, the fiber filter material can be replaced from the discharge port. During the discharge process, the sealing door is opened first, and then the power machine is started. Under the push of the scrubbing plate, the fiber filter material is pushed out of the discharge port, thereby reducing the workload of replacing the fiber filter material.

[0016] A switch lock for locking the cover is installed on the box body, and a motor bracket for supporting the power machine is also installed on the box body. The water collecting pipe and the power machine are connected through a coupling. A sealing shaft seat for matching the water collecting pipe is also installed on the box body to prevent water from flowing out from the matching gap between the box body and the water collecting pipe.

[0017] In summary, the beneficial effects of the present invention are: using fiber filter material to absorb impurities in water, when the fiber filter material needs to be cleaned, start the power machine, the power machine drives the water collecting pipe to rotate, the fiber filter material enters the bottom of the scrubbing plate through the seesaw, the rotating scrubbing plate continuously squeezes and scrubs the fiber filter material, the squeezing action is implemented by the support plate and the scrubbing plate, and then the power machine is controlled to alternately rotate forward and reverse, so as to promote scrubbing and reverse scrubbing alternately, so as to achieve a more thorough cleaning effect on the surface of the modified fiber filter material and the inside of the filter material. By utilizing the synergistic effect of dehumidification and drying of the heat pump unit and mechanical stirring and kneading, the filter material can be restored to its initial fluffy state, thereby restoring the initial filtering performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure of point B in the middle

[0020] Figure 3 For along Figure 1 Schematic diagram of the cross-sectional structure along the AA line;

[0021] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure of point C in the middle;

[0022] Figure 5 This is a schematic diagram of the layout of the heat pump unit and bag dust removal equipment.

[0023] In the figure: box body 1, cover plate 2, fiber filter material 3, power machine 4, switch lock 5, upper water inlet pipe 6, water outlet 7, lower water inlet pipe 8, air inlet pipe 9, motor bracket 10, coupling 11, water collecting pipe 12, sealing shaft seat 13, support rod 14, scrubbing plate 15, sealing door 16, supporting plate 17, water uniforming plate 18, sewage outlet 19, rocker 20, water through hole 21, water uniforming hole 22. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0029] An in-situ adsorption and desorption sewage filtration device comprises a housing 1, in which a support plate 17 for lifting a fiber filter material 3 is installed, and the structural features are as follows: a water collecting pipe 12 is rotatably installed in the housing 1, a scrubbing plate 15 for pressing the fiber filter material 3 against the support plate 17 is installed on the water collecting pipe 12, a seesaw 20 for guiding the fiber filter material 3 to the bottom of the scrubbing plate 15 is provided on the side of the scrubbing plate 15, and the seesaw 20 is tilted, and a power machine 4 for driving the water collecting pipe 12 to rotate is installed on the housing 1. Figure 1After adopting the above structure, the fiber filter material 3 is used to absorb impurities in the water. When the fiber filter material 3 needs to be cleaned, the power machine 4 is started. The power machine 4 drives the water collecting pipe 12 to rotate, and the fiber filter material 3 enters the bottom of the scrubbing plate 15 through the seesaw 20. The rotating scrubbing plate 15 continuously squeezes and scrubs the fiber filter material 3. The squeezing action is implemented by the support plate 17 and the scrubbing plate 15. Then, the power machine 4 is controlled to rotate forward and reverse alternately, so as to promote scrubbing and reverse scrubbing alternately, so as to achieve a more thorough cleaning effect on the surface of the modified fiber filter material 3 and the inside of the filter material.

[0030] See attached Figure 4 Regarding the specific structure of the seesaw 20, there are two seesaws 20, which are respectively located on both sides of the scrubbing plate 15. The distance between the scrubbing plate 15 and the supporting plate 17 is less than the minimum width of the fiber filter material 3, so that the scrubbing plate 15 and the supporting plate 17 can squeeze and scrub the fiber filter material 3.

[0031] See attached Figure 1 A water hole 21 is provided on the wall of the water collecting pipe 12, and the water hole 21 penetrates the water collecting pipe 12. One end of the water collecting pipe 12 extends outward from the box body 1, and a water outlet 7 is provided at the end of the water collecting pipe 12 extending out of the water collecting pipe 12. The water filtered by the fiber filter material 3 in the box body 1 can enter the water collecting pipe 12 through the water hole 21, and then be discharged outward through the water outlet 7.

[0032] See attached Figure 3 Regarding the specific structure of the support plate 17, the support plate 17 is in a semicircular arc shape, the water collecting pipe 12 is located above the support plate 17, the support plate 17 surrounds the water collecting pipe 12 and bends downward, and the support plate 17 is in a grid shape. The support plate 17 divides the box body 1 into two parts, and the support plate 17 holds up the fiber filter material 3 to prevent the fiber filter material 3 from falling to the bottom of the box body 1. Regarding the arrangement structure of the scrubbing plate 15, a plurality of scrubbing plates 15 are arranged around the water collecting pipe 12, and a support rod 14 for supporting the scrubbing plate 15 is installed on the water collecting pipe 12.

[0033] See attached Figure 1 , Attachment Figure 3 A water-distributing plate 18 is installed in the box 1, and a plurality of water-distributing holes 22 are provided on the water-distributing plate 18. The water-distributing plate 18 is located above the support plate 17. An upper water inlet pipe 6 for conveying water into the box 1 is installed on the box 1, and the upper water inlet pipe 6 is located above the water-distributing plate 18. The water-distributing holes 22 are circular holes with a diameter of 8 mm, and the center distance between the two holes is 20 mm. The water-distributing plate 18 evenly distributes the water from the upper water inlet pipe 6 on the fiber filter material 3, which can reduce the filtration dead angle.

[0034] See attached Figure 5The box body 1 is provided with a lower water inlet pipe 8 for conveying water into the box body 1, and the lower water inlet pipe 8 is located below the support plate 17. By distributing water at both ends of the upper water inlet pipe 6 and the lower water inlet pipe 8 at the same time, the filtering area can be effectively increased and the filtering efficiency can be improved. The box body 1 is provided with an air inlet pipe 9 for inputting air flow into the box body 1, and the air inlet pipe 9 is located below the support plate 17. The box body 1 is open upward, and a cover plate 2 for closing the upper opening of the box body 1 is installed on the upper part of the box body 1. The device also includes a heat pump unit and a bag dust removal device. When in use, the box body 1 is closed by using the cover plate 2, and then the heat pump unit is connected to the air inlet pipe 9, and the bag dust removal device is connected to the upper water inlet pipe 6, the lower water inlet pipe 8 and the water outlet 7. The warm air of the heat pump unit continuously dehumidifies and dries the filter material, and at the same time, the residual impurities in the filter material are thoroughly removed by mechanical stirring and kneading, and the kneaded dust impurities are intercepted by the bag dust removal filter. Due to the synergistic effect of the heat pump unit's dehumidification and drying and mechanical stirring and kneading, the filter material can return to its initial fluffy state, thereby restoring its initial filtering performance.

[0035] See attached Figure 1 The box body 1 is provided with a drain port 19, which is located at the lower part of the box body 1. A switch door is provided on the drain port 19. During the stirring and scrubbing process, the switch door is closed, the fiber filter material 3 is continuously rubbed and squeezed, and the dirt on the filter material surface and inside the filter material falls off. The scrubbed sludge is accumulated at the bottom of the box body 1. Then the switch door is opened, and the sludge impurities are discharged through the drain port 19, thereby reducing the backwashing time and the backwashing water volume.

[0036] See attached Figure 3 The side of the box body 1 is provided with a discharge port, the side of the support plate 17 extends to the discharge port, and a sealing door 16 for closing the discharge port is installed on the box body 1. The device can realize automatic discharge. When the fiber filter material 3 needs to be replaced, the fiber filter material 3 can be replaced from the discharge port. During the discharge process, the sealing door 16 is opened first, and then the power machine 4 is started. Under the push of the scrubbing plate 15, the fiber filter material 3 is pushed out of the discharge port, thereby reducing the workload of replacing the fiber filter material 3.

[0037] A switch lock 5 for locking the cover plate 2 is installed on the box body 1. A motor bracket 10 for supporting the power machine 4 is also installed on the box body 1. The water collecting pipe 12 and the power machine 4 are connected through a coupling 11. A sealing shaft seat 13 for matching the water collecting pipe 12 is also installed on the box body 1 to prevent water from flowing out from the matching gap between the box body 1 and the water collecting pipe 12.

[0038] When the equipment is in operation, water enters the housing 1 from the upper water inlet pipe 6 and the lower water inlet pipe 8, is filtered by the fiber filter material 3 and then discharged from the water outlet 7. During this process, the fiber filter material 3 can adsorb impurities in the water in situ. When flushing, clean water enters the housing 1 from the water outlet 7 and is discharged outward through the upper water inlet pipe 6 and the lower water inlet pipe 8. During this process, impurities in the fiber filter material 3 can be desorbed in situ.

[0039] Example 1:

[0040] The sewage to be treated in this example is the effluent from the secondary sedimentation tank of a sewage treatment plant, in which the SS content is 32 mg / L.

[0041] The experimental filter is 0.8 meters long, 0.64 meters wide, and 1.2 meters high. It has a built-in modified fiber filter material 3 for pollution holding of 0.4 cubic meters. The filtration water flow rate is set to 8 m³ / h. After 28 hours of filtration, the flow rate decreases to 6.5 m³ / h, the filtration rate is 12.7-15.6 m / h, and the filter outlet SS is about 5 to 7 mg / L. After the cycle water production is completed, the backwash program is started. The backwash stirring rate is 5 r / min, forward 1 min, reverse 1 min, the air washing intensity is 5 m³ / (m2oh), the backwash number is twice, the backwash time is 30 min, and the backwash water consumption is 0.82 cubic meters (the backwash water consumption is about 0.36% of the cycle water production). After the initial water production, the pollution holding capacity of the modified fiber filter material 3 was 13.1kg / m³. After 20 consecutive days of operation, the pollution holding capacity of the modified fiber filter material 3 was 9.4kg / m³, the water inlet flow rate decreased from 8m³ / h to 6m³ / h at a time interval of 21 hours, and the filter outlet water SS was about 6 to 8mg / L. When the pollution holding capacity of the fiber filter material 3 is less than 6kg / m³, the filter material can be replaced or the filter material can be restoratively cleaned.

[0042] Example 2:

[0043] The wastewater to be treated in this example is mechanical processing flushing wastewater, which needs to be deeply deoiled after preliminary deoiling treatment. The SS content of the influent is 15 mg / L and the oil content is 18 mg / L.

[0044] The experimental filter is 0.8 meters long, 0.64 meters wide, and 1.2 meters high. It has 30.45 cubic meters of modified fiber filter material for oil removal built in. The filtration water flow rate is set to 6 m³ / h. After 22 hours of filtration, the flow rate decreases to 5.5 m³ / h, the filtration rate is 10.7-11.5 m / h, the filter outlet water SS is about 2 to 4 mg / L, and the S oil content is about 3 to 5 mg / L. After the cycle water production is completed, the backwash program is started, the backwash stirring rate is 6 r / min, forward rotation is 2 min, reverse rotation is 2 min, the air washing intensity is 4.5 m³ / (m2oh), the backwash number is twice, the backwash time is 25 min, and the backwash water consumption is 0.78 cubic meters (the backwash water consumption is about 0.62% of the cycle water production). After 20 days of continuous operation, the water inlet flow rate decreased from 6m³ / h to 5.5m³ / h at an interval of 18 hours. The SS content of the filter outlet water was about 3 to 5mg / L, and the oil content was about 5 to 7mg / L.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An in-situ adsorption and desorption sewage filtration device, comprising a housing (1), wherein a support plate (17) for supporting a fiber filter material (3) is installed in the housing (1), characterized in that: A water collecting pipe (12) is rotatably mounted in the housing (1), a scrubbing plate (15) for pressing the fiber filter material (3) against a support plate (17) is mounted on the water collecting pipe (12), a seesaw (20) for guiding the fiber filter material (3) to the bottom of the scrubbing plate (15) is provided on the side of the scrubbing plate (15), the seesaw (20) is tilted, and a power machine (4) for driving the water collecting pipe (12) to rotate is mounted on the housing (1).

2. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: Two seesaw plates (20) are provided, and the two seesaw plates (20) are respectively located on two sides of the scrubbing plate (15), and the spacing between the scrubbing plate (15) and the supporting plate (17) is smaller than the minimum width of the fiber filter material (3).

3. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: A water hole (21) is provided on the wall of the water collecting pipe (12), the water hole (21) passes through the water collecting pipe (12), one end of the water collecting pipe (12) extends outward from the box body (1), and a water outlet (7) is provided at the end of the water collecting pipe (12) extending out of the water collecting pipe (12).

4. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: The support plate (17) is in a semicircular arc shape, the water collecting pipe (12) is located above the support plate (17), the support plate (17) surrounds the water collecting pipe (12) and bends downward, and the support plate (17) is in a grid shape.

5. The in-situ adsorption and desorption sewage filtration device according to claim 4, characterized in that: A plurality of scrubbing plates (15) are arranged around the water collecting pipe (12), and a support rod (14) for supporting the scrubbing plates (15) is installed on the water collecting pipe (12).

6. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: A water distribution plate (18) is installed in the box body (1), a plurality of water distribution holes (22) are provided on the water distribution plate (18), the water distribution plate (18) is located above the support plate (17), an upper water inlet pipe (6) for conveying water into the box body (1) is installed on the box body (1), and the upper water inlet pipe (6) is located above the water distribution plate (18).

7. The in-situ adsorption and desorption sewage filtration device according to claim 6, characterized in that: A lower water inlet pipe (8) for conveying water into the box body (1) is installed on the box body (1), and the lower water inlet pipe (8) is located below the support plate (17).

8. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: An air inlet pipe (9) for inputting air into the box body (1) is installed on the box body (1), and the air inlet pipe (9) is located below the support plate (17). The box body (1) is open upward, and a cover plate (2) is installed on the upper part of the box body (1) to close the upper opening.

9. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: The box body (1) is provided with a sewage outlet (19), and the sewage outlet (19) is located at the lower part of the box body (1).

10. The in-situ adsorption and desorption sewage filtration device according to claim 1, characterized in that: A discharge port is provided on the side of the box body (1), the side edge of the support plate (17) extends to the discharge port, and a sealing door (16) for closing the discharge port is installed on the box body (1).

Images