Contact tank filtering device

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a filter device of a contact tank, which comprises a plurality of partition plates, a plurality of turbulent flow structures and a plurality of filter screens, the partition plates are all mounted in the contact tank, and in a working state, a water flow path in the contact tank is S-shaped; the plurality of turbulent flow structures are sequentially arranged at the bottom of the contact tank along the water flow path, and each turbulent flow structure comprises a groove and a boss which are arranged at the bottom of the tank; the filter screen is connected in the contact tank in a lifting manner, and is used for collecting sediments and scum in passing water flow in a working state. The utility model has the beneficial effects that the water flow path of sewage entering the contact tank is increased, the water flow entering the contact tank is disturbed and filtered for multiple times to collect precipitates, and then the filter screen is directly lifted out of the contact tank through the electric hoist, so that the precipitates and scum are cleaned on the premise of not stopping the work of the contact tank, and the working efficiency is improved; the production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a contact tank filtration device. Background Technology

[0002] In the effluent stage of a wastewater treatment plant, the contact tank is primarily used for disinfection. Disinfectants such as chlorine, chlorine dioxide, and sodium hypochlorite are added to the contact tank. These disinfectants come into full contact with the wastewater and react chemically, killing residual bacteria, viruses, and parasite eggs, thus ensuring the treated wastewater meets discharge standards. After the addition of chemicals, a sedimentation reaction occurs, and the reactants settle at the bottom of the contact tank. Furthermore, because the contact tanks in wastewater treatment plants contain a significant amount of suspended particles, colloids, silt, and algae, these substances accumulate at the bottom of the contact tank over time, forming sediment.

[0003] Once the sediment accumulates to a certain level at the bottom of the contact pool, it needs to be cleaned frequently. However, the water in the contact pool is constantly flowing during operation. Currently, the method of stopping water injection, draining the pool, and then manually removing the sediment is inefficient and disrupts the normal operation of the contact pool. Summary of the Invention

[0004] The technical problem this invention aims to solve is that currently, after emptying the sewage from the contact tank, the sediment is manually cleaned, which is inefficient and affects the normal operation of the contact tank. The purpose is to provide a contact tank filtration device that agitates and filters the water entering the contact tank multiple times, collecting sediment and scum, thus cleaning sediment and scum without stopping the operation of the contact tank, thereby improving work efficiency.

[0005] This utility model is achieved through the following technical solution:

[0006] A contact pool filtration device includes several baffles, several flow-dispersing structures, and several filter screens. The baffles are installed within the contact pool to define an S-shaped flow channel. The flow-dispersing structures are sequentially arranged along the water flow path at the bottom of the contact pool, each including a groove and a protrusion on the bottom. The filter screens are vertically and vertically connected within the contact pool, and in operation, they collect sediment and scum from the flowing water.

[0007] The beneficial effects of this utility model are as follows: By setting several turbulence structures along the water flow path at the bottom of the contact tank, and designing grooves and protrusions on these structures, the water flow can move against the current and collide with other water flows in the direction of the current when it encounters the protrusions and grooves, thus achieving a turbulence effect on the water flow. This disturbs sediments and other substances in the water flow, keeping them in the sewage. Furthermore, a filter screen is installed at the turbulence structure to collect sediments and scum passing above it. Several baffles are also installed to make the water flow path in the contact tank S-shaped, increasing the water flow path for the sewage entering the contact tank. This allows for multiple disturbances and filtrations of the water entering the contact tank, enhancing the sediment collection effect. It also allows the filter screen to be directly removed from the contact tank once a certain amount of sediment and scum has been collected. Only the sediment in the filter screen needs to be cleaned to clean the sediment and scum in the contact tank. This cleaning of sediments and scum is achieved without stopping the contact tank's operation, improving work efficiency and saving labor and production costs.

[0008] In some embodiments, each of the turbulence-disrupting structures has an angle of 80° to 90° with the corresponding water flow direction. By ensuring that each of the turbulence-disrupting structures has an angle of 80° to 90° with the corresponding water flow direction, the turbulence-disrupting effect on the wastewater is effectively guaranteed.

[0009] In some embodiments, the groove includes a first groove and a second groove, and the boss includes a first boss and a second boss. The first boss, the first groove, the second boss, and the second groove are arranged sequentially along the water flow direction. The height of the first boss, the depth of the first groove, the height of the second boss, and the depth of the second groove increase sequentially. The bottom filter part is attached to the upper end of the first boss, the first groove, the second boss, and the second groove. This allows the wastewater to be lifted when it flows over the boss and sink when it flows over the groove. Due to the difference in height and depth, the disturbance and turbulence generated by the water flow gradually increase during this process, causing suspended particles, microorganisms, colloids, and algae in the wastewater to collide and contact multiple times, thereby forming larger sediments and further improving the effect of the filter screen in collecting sediment.

[0010] In some embodiments, the cross-sections of the first boss, the first groove, the second boss, and the second groove are all trapezoidal. By setting the cross-sections of both the boss and the groove to trapezoidal, the disturbance effect is improved.

[0011] In some embodiments, the partition divides the contact pool into several interconnected water flow channels, and several filter screens are respectively vertically and elliptably connected to the sidewalls of the corresponding water flow channels. By vertically and elliptably connecting several filter screens to the sidewalls of the corresponding water flow channels, filter screens are installed at the upper end of the turbulence structure to block and collect sediment and other substances in the wastewater.

[0012] In some embodiments, guide grooves are provided on both the partition and the pool wall. Several guide grooves extend vertically along the partition or pool wall and are located at both ends of the first protrusion and the second groove, respectively. The filter screen is a rectangular frame with a flexible structure. Guide wheels are provided at the four bottom corners and the middle of the four side edges of the filter screen, and the guide wheels are slidably connected to the corresponding guide grooves. By setting the guide grooves, the running trajectory of the guide wheels installed on the filter screen is restricted, thereby controlling the trajectory of the filter screen during its ascent and descent. This ensures that the filter screen can fit snugly over the upper ends of the first protrusion, the first groove, the second protrusion, and the second groove, ensuring the effective collection of sediment.

[0013] In some embodiments, the filter screen further includes a side filter section and an end filter section. The side filter section is connected to the downstream side of the bottom filter section along the water flow direction, and the end filter section is located at both ends of the filter screen and connected to the bottom filter section. By connecting the side filter section to the downstream side of the bottom filter section along the water flow direction, and in conjunction with the end filter section and the bottom filter section, disturbed sediment and scum are blocked and collected in the filter screen.

[0014] In some embodiments, the side filters and end filters, on the side furthest from the bottom filter, are both higher than the water surface in the contact tank. This is to prevent scum on the wastewater surface from floating downstream, thus enabling the collection of scum and sediment flowing over the entire turbulence structure.

[0015] In some embodiments, the top of the bottom filter section is provided with several counterweights, which are located at the bottom of the first groove and the bottom of the second groove respectively in the working state. By providing counterweights at the top of the bottom filter section, the counterweights adhere the bottom filter screen to the bottom of the groove, preventing sedimentation between the filter screen and the groove and protrusion, and also preventing the filter screen from floating up when the water flow is disturbed, thus ensuring the effectiveness of sediment collection.

[0016] In some embodiments, the filter screen further includes a top pull rope. The top of the filter screen and the side away from the side filter section are both configured as cavities. The top pull rope is located above the contact tank. The top pull rope at the upper end of the side away from the side filter section is connected to the top pull rope at the upper end of the side filter section via a connecting rope. The connection point formed by the top pull rope at the upper end of the side away from the side filter section and the connecting rope is connected to an electric hoist. By connecting the electric hoist to the connection point formed by the top pull rope at the upper end of the side away from the side filter section and the connecting rope, it is convenient to first pull the side of the filter screen away from the side filter section upwards to a certain distance before the side filter section is pulled up. This prevents sediment and scum from flowing out of the cavity on the side away from the side filter section, thus affecting the filter screen's ability to collect sediment and scum.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. Increase the water flow path of sewage entering the contact tank. The water entering the contact tank is subjected to multiple disturbances and multiple filtrations to collect sediment. After the sediment and scum collected in the filter screen reach a certain level, the filter screen is directly lifted out of the contact tank by an electric hoist. Only the sediment in the filter screen needs to be cleaned to clean the sediment and scum in the contact tank. The sediment and scum can be cleaned without stopping the operation of the contact tank, which improves work efficiency and saves labor and production costs.

[0019] 2. When the sewage flows over the protrusion, it will be lifted up, and when it flows over the groove, it will sink down. Due to the difference in height and depth, the disturbance and turbulence generated by the water flow in this process will gradually increase, causing suspended particles, microorganisms and algae in the sewage to collide and come into contact multiple times, thereby forming larger sediments, which further improves the effect of the filter screen in collecting sediments.

[0020] 3. By connecting the electric hoist to the connection point formed by the top pull rope on the side away from the side filter section and the connecting rope, it is convenient to first pull the side of the filter screen away from the side filter section to a certain distance before the side filter section is pulled up during operation. This prevents sediment and scum from flowing away from the cavity on the side away from the side filter section, thus affecting the filter screen's ability to collect sediment and scum. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the bottom of the contact pool in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the filter screen in this utility model;

[0025] Figure 4 This utility model Figure 1 A magnified view of section K in the middle.

[0026] The attached diagram shows the markings and corresponding component names:

[0027] Contact pool 10, partition 12, guide groove 13, filter screen 20, bottom filter part 201, side filter part 202, end face filter part 203, top pull rope 23, connecting rope 24, guide wheel 21, counterweight 22, pool bottom 30, first boss 31, first groove 311, second boss 32, second groove 321. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0029] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0031] The terms "first," "second," etc., used in this utility model are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0032] Example

[0033] See Figures 1-4This embodiment provides a contact pool filtration device, including several baffles 12, several turbulence structures, and several filter screens 20. The baffles 12 are installed inside the contact pool 10 to define an S-shaped flow channel within the contact pool 10. The turbulence structures are sequentially arranged along the water flow path at the bottom 30 of the contact pool 10. Each turbulence structure includes a groove and a protrusion on the bottom 30. The filter screens 20 are vertically and vertically connected inside the contact pool 10. In operation, the filter screens 20 collect sediment and scum from the flowing water. By subjecting the water entering the contact pool 10 to multiple turbulence and filtration processes, the sediment collection effect is enhanced. Furthermore, once the sediment and scum collected in the filter screens 20 reach a certain level, the filter screens 20 can be directly removed from the contact pool 10. Only the sediment in the filter screens 20 needs to be cleaned to remove the sediment and scum from the contact pool 10. This cleanup is achieved without stopping the operation of the contact pool 10, improving work efficiency and saving labor and production costs.

[0034] See Figure 2 Each of the aforementioned turbulence-disrupting structures has an angle of 80° to 90° with the corresponding water flow direction. By ensuring that each of the aforementioned turbulence-disrupting structures has an angle of 80° to 90° with the corresponding water flow direction, the turbulence-disrupting effect on the wastewater is effectively guaranteed.

[0035] See Figure 1 and Figure 2 The groove includes a first groove 311 and a second groove 321, and the protrusion includes a first protrusion 31 and a second protrusion 32. The first protrusion 31, the first groove 311, the second protrusion 32, and the second groove 321 are arranged sequentially along the water flow direction. The height of the first protrusion 31, the depth of the first groove 311, the height of the second protrusion 32, and the depth of the second groove 321 increase sequentially. The bottom filter part 201 is attached to the upper end of the first protrusion 31, the first groove 311, the second protrusion 32, and the second groove 321. This allows the wastewater to be lifted when it flows over the protrusions and sink when it flows over the grooves. Due to the difference in height and depth, the disturbance and turbulence generated by the water flow gradually increase during this process, causing suspended particles, microorganisms, colloids, and algae in the wastewater to collide and contact multiple times, thereby forming larger sediments and further improving the collection and sedimentation effect of the filter screen 20.

[0036] See Figure 1 and Figure 2 The cross-sections of the first boss 31, the first groove 311, the second boss 32, and the second groove 321 are all trapezoidal. By setting the cross-sections of the bosses and grooves to trapezoidal, the disturbance effect is improved.

[0037] See Figures 1-4The partition 12 divides the contact pool 10 into several interconnected water flow channels, and several filter screens 20 are respectively vertically and flexibly connected to the side walls of the corresponding water flow channels. By vertically and flexibly connecting several filter screens 20 to the side walls of the corresponding water flow channels, filter screens 20 are installed at the upper end of the turbulence structure to block and collect sediment and other substances in the sewage.

[0038] See Figure 1 and Figure 2 The partition 12 and the pool wall are both provided with guide grooves 13. Several guide grooves 13 extend vertically along the partition 12 or the pool wall. Several guide grooves 13 are located at both ends of the first protrusion 31 and both ends of the second groove 321, respectively. The filter screen 20 is a rectangular frame with a flexible structure. Guide wheels 21 are provided at the four bottom corners and the middle of the four side edges of the filter screen 20. The guide wheels 21 are slidably connected in the corresponding guide grooves 13. By setting the guide grooves 13, the running trajectory of the guide wheels 21 installed on the filter screen 20 is restricted, thereby controlling the trajectory of the filter screen 20 when rising and falling, ensuring that the filter screen 20 can fit and cover the upper ends of the first protrusion 31, the first groove 311, the second protrusion 32, and the second groove 321, ensuring the effect of collecting sediment, etc.

[0039] See Figures 1-4 The filter screen 20 further includes a side filter section 202 and an end filter section 203. The side filter section 202 is connected to the downstream side of the bottom filter section 201 along the water flow direction. The end filter section 203 is located at both ends of the filter screen 20 and is connected to the bottom filter section 201. By connecting the side filter section 202 to the downstream side of the bottom filter section 201 along the water flow direction, and in conjunction with the end filter section 203 and the bottom filter section 201, disturbed sediment and scum are blocked and collected in the filter screen 20.

[0040] See Figures 1-4 The side filter section 202 and the end filter section 203, both located away from the bottom filter section 201, are higher than the water surface of the contact tank 10. This is to prevent scum on the sewage surface from floating downstream, thus collecting scum and sediment flowing over the entire turbulence structure.

[0041] See Figure 1 and Figure 3The bottom filter section 201 has several counterweights 22 at its top. In operation, the counterweights 22 are located at the bottom of the first groove 311 and the bottom of the second groove 321, respectively. By setting the counterweights 22 at the top of the bottom filter section 201, the counterweights 22 secure the bottom filter screen 20 to the bottom of the groove, preventing sediment from forming between the filter screen 20 and the groove and protrusion. They also prevent the filter screen 20 from floating when the water flow is disturbed, ensuring effective sediment collection.

[0042] See Figures 1-4 The filter screen 20 also includes a top pull rope 23. The top of the filter screen 20 and the side away from the side filter section 202 are both configured as cavities. The top pull rope 23 is located above the contact pool 10. The top pull rope 23 on the upper end of the side away from the side filter section 202 is connected to the top pull rope 23 on the upper end of the side filter section 202 via a connecting rope 24. The connection point formed by the top pull rope 23 on the upper end of the side away from the side filter section 202 and the connecting rope 24 is connected to an electric hoist. By connecting the electric hoist to the connection point formed by the top pull rope 23 on the upper end of the side away from the side filter section 202 and the connecting rope 24, it is convenient that during operation, the side of the filter screen 20 away from the side filter section 202 is pulled up to a certain distance before the side filter section 202 is pulled up. This prevents sediment and scum from flowing out of the cavity on the side away from the side filter section 202, thus affecting the filter screen 20's ability to collect sediment and scum.

[0043] During operation, the guide wheels 21 of the filter screen 20 are first installed in the corresponding guide grooves 13. The bottom guide wheel 21 is moved down to the lower end of the guide groove 13, and the bottom filter section 201 of the filter screen 20 adheres to the upper end of the disturbance structure under its own weight and configuration. The upper end of the filter screen 20 is connected to the electric hoist or the top pull rope 23 is attached to the top of the guide groove 13, so that the tops of the end filter section 203 and the side filter section 202 of the filter screen 20 are both above the water surface. When it is necessary to remove sediment and scum, the connection point formed by the top pull rope 23 on the upper end of the side away from the side filter section 202 and the connecting rope 24 is connected to the electric hoist. This allows the filter screen 20 to be pulled up to a certain distance on the side away from the side filter section 202 before the side filter section 202 is pulled up, preventing sediment and scum from flowing away from the cavity on the side away from the side filter section 202 and affecting the effect of the filter screen 20 in collecting sediment and scum.

[0044] Specifically, the counterweight 22 can be set at the bottom center point and both ends of the filter screen 20 located in the groove. The guide wheel 21 is made of heavy steel wheel or stone wheel, etc., to ensure that the guide wheel 21 can remain at the lower end of the guide groove 13 under the impact of water flow.

[0045] Specifically, the filter screen 20 can be made of a rubber filter screen 20 with a certain weight and flexible characteristics. The microporous structure on the surface or inside of the rubber filter screen 20 can filter mud and sand. By utilizing the flexibility of rubber, the filter screen can adapt to the impact and changes of water flow during the filtration process and is not easy to break.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A contact cell filter apparatus, characterized by, include: Several baffles are installed inside the contact pool to define an S-shaped flow channel within the contact pool; Several flow-disrupting structures are arranged sequentially along the water flow path at the bottom of the contact pool. Each flow-disrupting structure includes a groove and a protrusion on the bottom of the pool. Several filter screens are connected to the contact pool in a height-adjustable manner. In operation, the filter screens are used to collect sediment and scum in the passing water flow.

2. The contact cell filter apparatus of claim 1, wherein, Each of the aforementioned turbulence structures has a set angle with the corresponding water flow direction, the set angle being 80° to 90°.

3. The contact cell filter apparatus of claim 1, wherein, The groove includes a first groove and a second groove, and the boss includes a first boss and a second boss. The first boss, the first groove, the second boss and the second groove are arranged sequentially along the water flow direction. The height of the first boss, the depth of the first groove, the height of the second boss and the depth of the second groove increase sequentially. The filter screen includes a bottom filter part, which is attached to the upper end of the first boss, the first groove, the second boss and the second groove.

4. The contact cell filter apparatus of claim 3, wherein, The cross-sections of the first boss, the first groove, the second boss, and the second groove are all trapezoidal.

5. The contact cell filter apparatus of claim 3, wherein, The partition divides the inner cavity of the contact pool into several interconnected water flow channels, and several filter screens are respectively connected to the side wall of the corresponding water flow channel in a lifting and lowering manner.

6. The contact cell filter apparatus of claim 5, wherein, The partition and the pool wall are provided with guide grooves. Several guide grooves extend vertically along the partition or the pool wall at the contact point. Several guide grooves are located at both ends of the first protrusion and both ends of the second groove. The filter screen is in the shape of a cuboid frame and has a flexible structure. Guide wheels are provided at the four bottom corners and the middle of the four side edges of the filter screen. The guide wheels are slidably connected in the corresponding guide grooves.

7. The contact cell filter apparatus of claim 5, wherein, The filter screen also includes a side filter section and an end filter section. The side filter section is connected to the side of the bottom filter section downstream of the water flow direction, and the end filter section is located at both ends of the filter screen.

8. The contact cell filter apparatus of claim 7, wherein, Both the side filter section and the end filter section are located on the side furthest from the bottom filter section, and are higher than the water surface of the contact pool.

9. The contact pool filtration device according to any one of claims 3-8, characterized in that, The top of the bottom filter section is provided with several counterweights, which are located at the bottom of the first groove and the bottom of the second groove respectively in the working state.

10. The contact tank filtration apparatus of any one of claims 7 or 8, wherein, The filter screen also includes a top pull rope. The top of the filter screen and the side away from the side filter section are both set as cavities. The top pull rope is located above the contact pool. The top pull rope at the upper end of the side away from the side filter section is connected to the top pull rope at the upper end of the side filter section by a connecting rope. The connection point formed by the top pull rope at the upper end of the side away from the side filter section and the connecting rope is connected to an electric hoist.

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