Contact tank filtering device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a contact tank filtering device 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 a 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 sewage treatment device has the beneficial effects that a water flow path of sewage entering the contact tank is increased, water flow entering the contact tank is subjected to multiple times of disturbance and multiple times of filtration for collection and precipitation, then the filter screen is directly lifted out of the contact tank through the electric hoist, precipitation and scum cleaning is realized on the premise of not stopping the work of the contact tank, the working efficiency is improved, and the energy consumption is reduced. The production cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment technology, and particularly to a contact tank filtration device. Background Art

[0002] At the effluent stage of a sewage treatment plant, the contact tank is mainly used for disinfection. By adding disinfectants such as chlorine, chlorine dioxide, sodium hypochlorite, etc. to the contact tank, the disinfectants fully contact the sewage and undergo chemical reactions to kill pathogenic microorganisms such as residual bacteria, viruses, and parasite eggs in the sewage, so that the treated sewage meets the discharge standards. After adding the medicament to the sewage, a precipitation reaction will occur, and the reactants will precipitate at the bottom of the contact tank. Also, due to the fact that the contact tank in the sewage treatment plant contains a large amount of suspended particles, colloids, sediment, and algae, over time, sediment, algae, and some colloid substances in the water will accumulate at the bottom of the contact tank to form precipitates.

[0003] After the sediment at the bottom of the contact tank accumulates to a certain extent, it is necessary to clean the sediment at the bottom of the contact tank, and the frequency of sediment cleaning is high. When the contact tank is working, the water in the contact tank is continuously flowing. Currently, after stopping the injection of water into the contact tank and draining the water in the contact tank, the sediment in the contact tank is removed manually. The removal efficiency is low and it affects the normal operation of the contact tank. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that currently, after draining the sewage in the contact tank, the sediment in the contact tank is cleaned manually, and the cleaning efficiency of the sediment is low and it affects the normal operation of the contact tank. The purpose is to provide a contact tank filtration device that disturbs and filters the water flow entering the contact tank multiple times, collects sediment and scum, and realizes the cleaning of sediment and scum without stopping the operation of the contact tank, thereby improving the work efficiency.

[0005] The present invention is achieved by the following technical solutions:

[0006] A contact tank filtration device includes several partitions, several flow disturbing structures, and several filter meshes. The several partitions are all installed in the contact tank to define an S-shaped flow path in the contact tank; the several flow disturbing structures are sequentially arranged along the water flow path at the bottom of the contact tank, and the flow disturbing structure includes a groove and a convex platform provided at the bottom; the filter mesh is connected to the contact tank in a liftable manner, and in the working state, the filter mesh is used to collect sediment and scum in the passing water flow.

[0007] The beneficial effects of the present invention are as follows. By arranging several turbulence structures along the water flow path at the bottom of the contact tank, and setting the turbulence structures as grooves and protrusions, it is convenient for the water flow to move against the water flow and collide with other water flows along the water flow when encountering the protrusions and grooves, achieving the effect of disturbing the water flow, so that sediments in the water flow are disturbed in the sewage. A filter screen is also arranged at the disturbance structure to collect sediments, scum, etc. passing above the disturbance structure. Additionally, by arranging several partition plates to set the water flow path in the contact tank as an S shape, the water flow path of the sewage entering the contact tank is increased, so as to facilitate multiple disturbances and multiple filtrations of the water flow entering the contact tank, enhancing the effect of collecting sediments. It is also convenient to directly lift the filter screen out of the contact tank after the sediments and scum collected in the filter screen reach a certain level. Only by cleaning the sediments in the filter screen can the sediments and scum in the contact tank be cleaned, realizing the cleaning of sediments and scum without stopping the operation of the contact tank, improving work efficiency, and saving labor and production costs.

[0008] In some embodiments, each of the turbulence structures has a set angle with the corresponding water flow direction, and the set angle is 80° - 90°. By setting each of the turbulence structures to have a set angle with the corresponding water flow direction, and the set angle being 80° - 90°, it is convenient to ensure the disturbance effect of the turbulence structure on the sewage.

[0009] In some embodiments, the groove includes a first groove and a second groove, the protrusion includes a first protrusion and a second protrusion, the first protrusion, the first groove, the second protrusion, and the second groove are arranged in sequence along the water flow direction, the height of the first protrusion, the depth of the first groove, the height of the second protrusion, and the depth of the second groove increase in sequence, and the bottom filter part is attached to the upper ends of the first protrusion, the first groove, the second protrusion, and the second groove. It is convenient for the water flow of the sewage to be lifted when passing through the protrusion and sink when passing through the groove. Due to the differences in height and depth, the disturbance and turbulence generated by the water flow during this process gradually increase, prompting multiple collisions and contacts between suspended particles, microorganisms, colloids, and algae in the sewage, thereby forming larger sediments and further improving the effect of the filter screen collecting sediments, etc.

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

[0011] In some embodiments, the partition plate divides the contact tank into several interconnected water flow channels, and several filter screens are respectively connected to the side walls of the corresponding water flow channels in a liftable manner. By respectively connecting several filter screens to the side walls of the corresponding water flow channels in a liftable manner, it is realized to install the filter screen at the upper end of the turbulence structure to block and collect sediments, etc. in the sewage.

[0012] In some embodiments, guiding grooves are provided on both the partition plate and the pool wall. Several of the guiding grooves extend vertically along the partition plate or the pool wall. The several guiding grooves are respectively located at two ends of the first boss and two ends of the second groove. The filter net is in the shape of a rectangular parallelepiped frame and is a flexible structure. Guide wheels are provided at four corners of the bottom and in the middle of four side edges of the filter net. The guide wheels are slidably connected in the corresponding guiding grooves. By providing the guiding grooves to limit the running track of the guide wheels installed on the filter net, the track of the filter net during ascending and descending is controlled, ensuring that the filter net can fit and cover the upper ends of the first boss, the first groove, the second boss, and the second groove, and ensuring the effect of collecting sediment and the like.

[0013] In some embodiments, the filter net further includes a side filtering portion and an end face filtering portion. The side filtering portion is connected to one side of the bottom filtering portion downstream along the water flow direction. The end face filtering portion is located at two ends of the filter net and is connected to the bottom filtering portion. By connecting the side filtering portion to one side of the bottom filtering portion downstream along the water flow direction and cooperating with the end face filtering portion and the bottom filtering portion, the disturbed sediment, scum, etc. are blocked and collected in the filter net.

[0014] In some embodiments, the sides of the side filtering portion and the end face filtering portion away from the bottom filtering portion are all higher than the water surface of the contact pool. This is to facilitate blocking the floating scum on the sewage surface from floating downstream, and to achieve the collection of the scum and sediment flowing through the upper part of the entire flow disturbing structure.

[0015] In some embodiments, several weights are provided on the top of the bottom filtering portion. In the working state, the weights are respectively located at the bottoms of the first groove and the second groove. By providing weights on the top of the bottom filtering portion, the weights connect the bottom filter net to the bottom of the groove, avoiding the generation of sediment between the filter net and the groove and the boss, and also preventing the filter net from floating up during water flow disturbance, ensuring the effect of collecting sediment.

[0016] In some embodiments, the filter net further includes a top pulling rope. The top and the side away from the side filtering portion of the filter net are both provided with cavities. The top pulling rope is located above the contact pool. The top pulling rope at the upper end of the side away from the side filtering portion and the top pulling rope at the upper end of the side filtering portion are connected by a connecting rope. The connection point formed by the top pulling rope at the upper end of the side away from the side filtering portion and the connecting rope is connected to an electric hoist. By connecting the electric hoist to the connection point formed by the top pulling rope at the upper end of the side away from the side filtering portion and the connecting rope, it is convenient to first pull the side of the filter net away from the side filtering portion up to a certain distance during work, and then the side filtering portion is pulled up, preventing sediment and scum from flowing away from the cavity on the side away from the side filtering portion and affecting the effect of the filter net collecting sediment and scum.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The water flow path of the sewage entering the contact tank is increased, and the water flow entering the contact tank is disturbed and filtered and collected for precipitation multiple times. After the precipitation, floating scum, etc. collected in the filter net reach a certain degree, the filter net is directly lifted out of the contact tank by an electric hoist. Only by cleaning the precipitation in the filter net can the precipitation and floating scum in the contact tank be cleaned. Without stopping the operation of the contact tank, the precipitation and floating scum can be cleaned, improving work efficiency and saving labor and production costs.

[0019] 2. When the water flow of the sewage passes through the convex platform, it will be lifted, and when it passes through the groove, it will sink. Due to the differences in height and depth, the disturbance and turbulence generated by the water flow in this process will gradually increase, prompting the suspended particles, microorganisms, algae, etc. in the sewage to collide and contact multiple times, thereby forming larger precipitates and further improving the effect of the filter net in collecting precipitates, etc.

[0020] 3. 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 part and the connection rope, it is convenient during operation. First, when the side of the filter net away from the side filter part is pulled up to a certain distance, the side filter part is then pulled up, preventing the precipitation, floating scum, etc. from wandering out of the cavity on the side away from the side filter part and affecting the effect of the filter net in collecting precipitation and floating scum. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

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

[0023] Figure 2 is a partial cross-sectional view of the bottom of the contact tank in the present invention;

[0024] Figure 3 is a schematic structural diagram of each filter net in the present invention;

[0025] Figure 4 is the present invention Figure 1 an enlarged view of part K in.

[0026] Marks in the drawings and corresponding component names:

[0027] Contact tank 10, partition 12, guide groove 13, filter net 20, bottom filtration part 201, side filtration part 202, end face filtration part 203, top drawstring 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 mode

[0028] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0029] Throughout the specification, the reference to "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" appearing throughout the specification do not necessarily refer to the same embodiment or example. In addition, specific features, structures or characteristics can be combined in one or more embodiments or examples in any appropriate combination and / or sub-combination. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and the drawings are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] In the description of the present invention, the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present invention.

[0031] The terms "first", "second", etc. used in the present invention are only used to distinguish the corresponding components clearly and are not intended to limit any order or emphasize importance, etc. In addition, the term "connection" used herein, without special explanation, can be directly connected or indirectly connected via other components.

[0032] Embodiment

[0033] See Figures 1 - 4, this embodiment provides a contact tank filtration device, which includes several partition plates 12, several flow disturbance structures, and several filter meshes 20. The several partition plates 12 are all installed in the contact tank 10 to define an S-shaped flow channel in the contact tank 10; the several flow disturbance structures are sequentially arranged on the bottom 30 of the contact tank 10 along the water flow path, and the flow disturbance structure includes a groove and a convex platform arranged on the bottom 30; the filter mesh 20 is connected to the contact tank 10 in a liftable manner, and in the working state, the filter mesh 20 is used to collect sediment and scum in the passing water flow. By disturbing and filtering the water flow entering the contact tank 10 multiple times, the effect of collecting sediment is increased, and it is also convenient to directly lift the filter mesh 20 out of the contact tank 10 after the sediment and scum collected in the filter mesh 20 reach a certain level. Only by cleaning the sediment in the filter mesh 20 can the sediment and scum in the contact tank 10 be cleaned. The sediment and scum can be cleaned without stopping the operation of the contact tank 10, improving work efficiency and saving labor and production costs.

[0034] See Figure 2 , each of the flow disturbance structures has a set angle with the corresponding water flow direction, and the set angle is 80° - 90°. By setting each of the flow disturbance structures to have a set angle with the corresponding water flow direction, and the set angle is 80° - 90°, it is convenient to ensure the disturbance effect of the flow disturbance structure on the sewage.

[0035] See Figure 1 and Figure 2 , the groove includes a first groove 311 and a second groove 321, the convex platform includes a first convex platform 31 and a second convex platform 32, the first convex platform 31, the first groove 311, the second convex platform 32, and the second groove 321 are sequentially arranged along the water flow direction, the height of the first convex platform 31, the depth of the first groove 311, the height of the second convex platform 32, and the depth of the second groove 321 increase in sequence, and the bottom filtering part 201 fits on the upper ends of the first convex platform 31, the first groove 311, the second convex platform 32, and the second groove 321. It is convenient that the water flow of the sewage will be lifted when passing through the convex platform and will sink when passing through the groove. Due to the differences in height and depth, the disturbance and turbulence generated by the water flow in this process will gradually increase, prompting the suspended particles, microorganisms, colloids, and algae in the sewage to collide and contact multiple times, thereby forming larger sediment, further improving the effect of the filter mesh 20 in collecting sediment, etc.

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

[0037] See Figures 1 - 4, the partition 12 divides the contact tank 10 into several interconnected water flow channels, and several of the filter nets 20 are respectively connected to the side walls of the corresponding water flow channels in a liftable manner. By respectively connecting several of the filter nets 20 to the side walls of the corresponding water flow channels in a liftable manner, the filter nets 20 are installed at the upper end of the turbulence structure to block and collect sediment in the sewage.

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

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

[0040] See Figures 1 - 4 , the sides of the side filtering part 202 and the end face filtering part 203 away from the bottom filtering part 201 are both higher than the water surface of the contact tank 10. This is to facilitate blocking the scum on the sewage surface from floating downstream, and to collect the scum and sediment flowing through the upper part of the entire turbulence structure.

[0041] See Figure 1 and Figure 3, several weights 22 are arranged at the top of the bottom filtering part 201. In the working state, the weights 22 are respectively located at the bottoms of the first groove 311 and the second groove 321. By arranging the weights 22 at the top of the bottom filtering part 201, the weights 22 connect the bottom filter screen 20 to the bottom of the groove in a fitting manner, avoiding sedimentation between the filter screen 20 and the groove and the boss, and also preventing the filter screen 20 from floating up when disturbed by water flow, ensuring the effect of collecting sediment.

[0042] See Figures 1 - 4 , the filter screen 20 further includes a top pulling rope 23. The top and the side away from the side filtering part 202 of the filter screen 20 are both provided with cavities. The top pulling rope 23 is located above the contact pool 10. The top pulling rope 23 at the upper end of the side away from the side filtering part 202 is connected to the top pulling rope 23 at the upper end of the side filtering part 202 through a connecting rope 24. The connection point formed by the top pulling rope 23 at the upper end of the side away from the side filtering part 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 pulling rope 23 at the upper end of the side away from the side filtering part 202 and the connecting rope 24, it is convenient to first pull the side of the filter screen 20 away from the side filtering part 202 up to a certain distance during work, and then the side filtering part 202 is pulled up, preventing sediment and scum from wandering away from the cavity on the side away from the side filtering part 202 and affecting the effect of the filter screen 20 collecting sediment and scum.

[0043] During work, first install the guide wheels 21 of the filter screen 20 in the corresponding guide grooves 13. The lowermost guide wheel 21 moves down to the lower end of the guide groove 13. The bottom filtering part 201 of the filter screen 20 fits on the upper end of the disturbance structure under the action of its gravity and configuration. The upper end of the filter screen 20 is connected to the electric hoist or the top pulling rope 23 is lapped on the top of the guide groove 13, so that the top surfaces of the end face filtering part 203 and the side filtering part 202 of the filter screen 20 are both above the water surface. When it is necessary to remove sediment and scum, by connecting the electric hoist to the connection point formed by the top pulling rope 23 at the upper end of the side away from the side filtering part 202 and the connecting rope 24, it is convenient to first pull the side of the filter screen 20 away from the side filtering part 202 up to a certain distance during work, and then the side filtering part 202 is pulled up, preventing sediment and scum from wandering away from the cavity on the side away from the side filtering part 202 and affecting the effect of the filter screen 20 collecting sediment and scum.

[0044] Specifically, the weights 22 can be arranged at the center point and the two end points of the filter screen 20 located at the bottom of the groove. The guide wheels 21 are made of heavy steel wheels or stone wheels, etc., to ensure that the guide wheels 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 a rubber filter screen 20 made of a material with a certain weight and flexible characteristics. The microporous structure on the surface or inside of the rubber filter screen 20 can play a role in filtering sediment. Utilizing the flexibility of rubber, the filter screen can adapt to the impact and changes of water flow during the filtering process and is not easily broken.

[0046] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A contact pool filtration device, characterized in that: include: A plurality of baffles, each of which is installed in the contact tank to define an S-shaped flow channel in the contact tank; A plurality of flow-disturbing structures, wherein the plurality of flow-disturbing structures are sequentially arranged on the bottom of the contact pool along the water flow path, and the flow-disturbing structures include grooves and bosses arranged on the bottom of the pool; A plurality of filter screens are connected in a liftable manner in the contact tank. In a working state, the filter screens are used to collect sediment and scum in the passing water flow.

2. The contact pool filtration device according to claim 1, characterized in that: Each of the flow-disturbing structures has a setting angle with the corresponding water flow direction, and the setting angle is 80° to 90°.

3. The contact pool filtration device according to claim 1, characterized in that: 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 in sequence along the water flow direction, and 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 in sequence. The filter net includes a bottom filter part, and the bottom filter part is attached to the upper ends of the first boss, the first groove, the second boss and the second groove.

4. The contact pool filtration device according to claim 3, characterized in that: The cross sections of the first boss, the first groove, the second boss and the second groove are all trapezoidal.

5. The contact pool filtration device according to claim 3, characterized in that: The partition divides the inner cavity of the contact pool into a plurality of interconnected water flow channels, and a plurality of filter screens are respectively connected to the side walls of the corresponding water flow channels in a liftable manner.

6. The contact pool filtration device according to claim 5, characterized in that: Guide grooves are provided on the partition and the pool wall, and several of the guide grooves extend vertically along the partition or the pool wall at the contact point. Several of the guide grooves are respectively located at both ends of the first boss and both ends of the second groove. The filter net is in the shape of a rectangular frame and has a flexible structure. Guide wheels are provided at the four corners of the bottom of the filter net and the middle of the four side edges, and the guide wheels can be slidably connected in the corresponding guide grooves.

7. The contact pool filtration device according to claim 5, characterized in that: The filter screen further comprises a side filter portion and an end filter portion, wherein the side filter portion is connected to a side of the bottom filter portion downstream along a water flow direction, and the end filter portion is located at two ends of the filter screen.

8. The contact pool filtration device according to claim 7, characterized in that: The sides of the side filter part and the end filter part away from the bottom filter part are both higher than the water surface of the contact pool.

9. The contact pool filtration device according to any one of claims 3 to 8, characterized in that: A plurality of counterweights are arranged on the top of the bottom filter portion. In a working state, the counterweights are respectively located at the bottom of the first groove and the bottom of the second groove.

10. The contact pool filtration device according to any one of claims 7 or 8, characterized in that: The filter net also includes a top pull rope, and the top of the filter net and the side away from the side filter part are both set as cavities. The top pull rope is located above the contact pool, and the top pull rope at the upper end of the side away from the side filter part is connected to the top pull rope at the upper end of the side filter part through a connecting rope. The top pull rope at the upper end of the side away from the side filter part and the connecting rope are connected to the electric hoist at the connection point formed.

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