An integrated water treatment plant based on a water purification system

Abstract

The present application relates to the technical field of water treatment, and provides an integrated water plant based on a water purification system, comprising a pre-oxidation tank, a mechanical mixing tank, a flocculation sedimentation tank, a filter tank, and a clear water tank connected in sequence; the filter tank comprises a filter tank body and a backwash system, the filter tank body is provided with a filtration area and a water inlet area, the filtration area is filled with a plurality of filtration layers, the filtration area is located below the water inlet area, and an isolation filter is also movably provided in the filter tank, the isolation filter is used to connect and disconnect the water inlet area and the filtration area. The present application can prevent pollutants from re-attaching to the surface of the filter material after the filter tank is backwashed.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to an integrated water plant based on a water purification system. Background Art

[0002] Integrated water purification plants utilize advanced water treatment technology, integrating various treatment units into a single device to comprehensively purify and improve city tap water. The principle primarily involves multi-stage filtration, activated carbon adsorption, ultrafiltration membrane separation, and ultraviolet disinfection. In integrated water purification plants, biofilms form over time in filter tanks. Biofilms are thin films composed of microorganisms and their metabolites. These adhere to the surface of the filter media in the filter tank and gradually thicken over time, affecting filtration efficiency and water quality. To address the problem of biofilm accumulation on the filter media after long-term operation, air-water backwashing is typically used. This technology combines air scrubbing and water flushing, using air bubbles to expand the gaps between filter media particles, thereby enhancing the water flow's ability to flush contaminants. Furthermore, there are still some shortcomings in achieving this through controlling the air-water ratio.

[0003] After backwashing, the backwash water flow rate may be too low to completely flush away biofilm fragments, causing them to reattach to the filter media surface. Alternatively, if the filter remains stationary for a long time after backwashing, biofilm fragments may reattach, resulting in secondary contamination. This problem not only affects the filter's efficiency but also the purity of the effluent. Summary of the Invention

[0004] In order to prevent pollutants from re-attaching to the surface of the filter material after backwashing the filter tank, the present application provides an integrated water plant based on a water purification system.

[0005] This application provides an integrated water plant based on a water purification system, which adopts the following technical solutions:

[0006] An integrated water plant based on a water purification system includes a water purification system, wherein the water purification system includes a pre-oxidation tank, a mechanical mixing tank, a flocculation sedimentation tank, a filter tank and a clear water tank connected in sequence;

[0007] The filter tank includes a filter tank body and a backwash system. A filter area and a water inlet area are provided in the filter tank body. The filter area is filled with several filter layers. The filter area is located below the water inlet area. An isolation filter is also movably provided in the filter tank. The isolation filter is used to connect and disconnect the water inlet area and the filter area.

[0008] By adopting the above technical solution, after the filter area is backwashed by the backwash system, the water inlet area and the filter area are isolated by the isolation filter. After the filter tank is allowed to stand for a period of time, pollutants such as biofilm fragments are deposited on the isolation filter under the action of gravity, thereby preventing these pollutants from re-attaching to the surface of the filter layer, effectively avoiding secondary pollution, and ensuring the water quality and long-term stable operation of the system.

[0009] Optionally, the isolation filter includes an isolation filter plate and a first driving member, one end of the isolation filter plate is rotatably connected to the filter tank body, and the first driving member is used to drive the isolation filter plate to rotate;

[0010] The isolation filter plate comprises an isolation frame and a dirt-catching filter screen fixed to the inner side wall of the isolation frame, and a dirt collecting groove is formed between the inner side wall of the isolation frame and the side wall of the dirt-catching filter screen.

[0011] By adopting the above technical solution, the isolation filter includes an isolation filter plate and a first drive member. The isolation filter plate is rotatably connected to the filter tank body. The first drive member is used to drive the isolation filter plate to rotate, which can effectively realize the on-off control between the water inlet area and the filter area. After the last backwash is completed, a large amount of pollutants are concentrated and floated above the water inlet area. The isolation filter plate is driven by the first drive member to rotate to a horizontal state to separate the water inlet area and the filter area. The pollutants in the water inlet area are isolated in the water inlet area; the filter tank is allowed to stand for a period of time, so that pollutants such as biofilm fragments are deposited in the sump under the action of gravity. The isolation filter plate is rotated to connect the water inlet area and the filter area again. The pollutants in the sump move to the bottom of the sump or attach to the filter screen, thereby preventing the biofilm fragments from reattaching to the filter material surface after backwashing, ensuring the long-term stable operation of the filter tank.

[0012] Optionally, a receiving groove is provided on the inner side wall of the filter tank body, and the isolation filter plate can open and close the opening of the receiving groove when it rotates;

[0013] The bottom of the containing tank is also connected to a sedimentation tank body, and the area enclosed by the inner circle of the isolation frame gradually shrinks towards the direction approaching the pollution-catching filter screen.

[0014] By adopting the above technical solution, after the pollutants are deposited on the isolation filter plate, the isolation filter plate is rotated to connect the water inlet area and the filtration area again; the area enclosed by the inner circle of the isolation frame is gradually reduced, which helps pollutants such as biofilm fragments in the sewage collection tank to move into the sedimentation tank body under the action of gravity, and collects pollutants such as biofilm fragments in a centralized manner, which is beneficial to the long-term use of the isolation filter plate.

[0015] In addition, when the isolation filter plate rotates to connect the water inlet area and the filtration area again, the opening of the holding tank can be closed, making it difficult for pollutants such as biofilm fragments to enter the filtration area and the water inlet area along the opening of the holding tank, further preventing secondary pollution.

[0016] Optionally, the sedimentation tank is connected to a sewage pipe, and an opening and closing valve is provided on the sewage pipe.

[0017] By adopting the above technical solution, the sedimentation tank body is connected to a sewage pipe, and an opening and closing valve is provided on the sewage pipe, which can conveniently discharge pollutants such as biofilm fragments deposited in the sedimentation tank body out of the filter tank.

[0018] Optionally, a decontamination device is further included, which includes a decontamination scraper and a drive assembly. The decontamination scraper is slidably arranged in the accommodating groove, and one end of the decontamination scraper is abutted against the isolation filter plate. The drive assembly is used to drive the decontamination scraper to slide.

[0019] By adopting the above technical solution, when the isolation filter plate rotates to close the opening of the receiving tank, the decontamination device can be activated. The drive assembly drives the decontamination scraper to slide along the isolation filter plate, scraping off contaminants such as biofilm attached to the contamination filter screen, so that the contaminants attached to the isolation filter plate are deposited into the sedimentation tank as much as possible. On the one hand, this further prevents contaminants from re-entering the filtration area, improving the cleanliness of the filter tank and the water purification efficiency. On the other hand, it ensures that water on both sides of the isolation filter plate can flow smoothly, reducing the frequency of isolation filter plate replacement.

[0020] Optionally, the driving assembly includes a driving screw and a second driving member, wherein the driving screw is rotatably disposed in the accommodating groove, and the second driving member is used to drive the driving screw to rotate;

[0021] A guide rod is provided on one side of the driving screw rod, and the guide rod is provided in parallel with the driving screw rod; the guide rod passes through the decontamination scraper, and the driving screw rod passes through the decontamination scraper and is threadedly connected to the decontamination scraper.

[0022] By adopting the above technical solution, the driving assembly includes a driving screw and a second driving member. The driving screw is rotatably arranged in the receiving groove, and the second driving member drives the driving screw to rotate; a guide rod is provided on one side of the driving screw, and the guide rod is arranged parallel to the driving screw. The guide rod passes through the decontamination scraper, and the driving screw passes through the decontamination scraper and is threadedly connected to the decontamination scraper, thereby realizing smooth sliding of the decontamination scraper in the receiving groove, thereby effectively removing pollutants on the isolation filter plate, preventing biofilm fragments from re-adhering to the filtration area, and ensuring long-term and stable operation of the filter tank.

[0023] Optionally, the backwash system includes an air washing device and a water washing device, the air washing device includes an air distribution assembly, and the water washing device includes a water distribution assembly; the water distribution assembly and the air distribution assembly are both located in the filter tank body, and the water distribution assembly and the air distribution assembly are both located below the filter area.

[0024] By adopting the above technical solution, the water distribution components and air distribution components of the air washing device and the water washing device are both located inside the filter tank and below the filter area, which can effectively combine air scrubbing and water flushing to improve the removal effect of dirt and biofilm on the filter material surface, and ensure the cleanliness of the filter tank after backwashing.

[0025] Optionally, the gas distribution assembly includes a gas distribution network tube and a plurality of nozzles connected to the gas distribution network tube, wherein the plurality of nozzles are distributed in an array;

[0026] The air washing device further comprises a backwash air pipe, one end of which is connected to the air distribution network pipe, and the other end of which is connected to a backwash fan.

[0027] By adopting the above technical solution, the air distribution component includes an air distribution mesh pipe and multiple nozzles. The multiple nozzles are distributed in an array, which can evenly distribute the gas to the filter tank, improve the air-water backwash efficiency, and effectively remove dirt and biofilm on the filter material surface; the air washing device also includes a backwash air pipe, one end of the backwash air pipe is connected to the air distribution mesh pipe, and the other end is connected to the backwash fan. The high-pressure gas provided by the backwash fan further enhances the backwash effect, ensuring that the filter material surface is effectively cleaned.

[0028] Optionally, the water distribution assembly includes a water distribution network pipe and a plurality of water distribution nozzles connected to the water distribution network pipe, and the plurality of water distribution nozzles are distributed in an array;

[0029] The water washing device also includes a backwash water pipe, one end of which is connected to the water distribution network pipe, and the other end is connected to the clean water tank, and the backwash water pipe is connected to a backwash water pump.

[0030] By adopting the above technical solution, the water distribution assembly includes a water distribution network pipe and multiple water distribution nozzles connected to the water distribution network pipe. The multiple water distribution nozzles are distributed in an array, achieving uniformly distributed water flow impact, enhancing the cleaning effect during the water washing process, and further improving the cleaning efficiency and cleaning quality of the filter tank; one end of the backwash water pipe is connected to the water distribution network pipe, and the other end is connected to the clean water tank, and the backwash water pipe is connected to a backwash water pump. The water in the clean water tank is transported to the filter tank through the backwash water pump and the backwash water pipe to wash the filter tank.

[0031] Optionally, an isolation mesh plate is provided under each filter layer, and the isolation mesh plate is provided in a wave shape.

[0032] By adopting the above technical solution, an isolation mesh plate is arranged between adjacent filter layers, and the isolation mesh plate is arranged in a wavy shape, which can increase the water flow path and improve the filtering effect; at the same time, it can reduce the short-flow phenomenon between the filter layers and further improve the filtering performance of the water purification system.

[0033] In summary, this application has at least one of the following beneficial effects:

[0034] 1. In this application, an isolation filter is installed in the filter tank to isolate the water inlet area from the filtration area. After the filter tank is left to stand for a period of time, pollutants such as biofilm fragments are deposited on the isolation filter under the action of gravity, thereby preventing these pollutants from reattaching to the surface of the filter layer, effectively avoiding secondary pollution, and ensuring the water quality and long-term stable operation of the system.

[0035] 2. The isolation filter plate in this application includes an isolation frame and a contaminant filter screen fixed to the inner side wall of the isolation frame, and a contaminant collection trough is formed between the inner side wall of the isolation frame and the side wall of the contaminant collection screen. After pollutants such as biofilm fragments are deposited in the contaminant collection trough under the action of gravity, the isolation filter plate is rotated to reconnect the water inlet area and the filtration area. The pollutants in the contaminant collection trough move to the bottom of the contaminant collection trough or adhere to the contaminant collection screen. This prevents biofilm fragments from reattaching to the filter material surface after backwashing while not affecting the normal use of the filter tank.

[0036] 3. The bottom of the holding tank in this application is also connected to a sedimentation tank body. The biofilm fragments and other pollutants in the sewage collection tank can be moved into the sedimentation tank body under the action of gravity, and the biofilm fragments and other pollutants can be collected centrally, which is conducive to the long-term use of the isolation filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of the water purification system of Example 1 of the present application;

[0038] Figure 2 Schematic diagram of the internal structure of the filter tank in Example 1 of the present application;

[0039] Figure 3 This is an isometric structural diagram of the filter tank in Example 1 of the present application;

[0040] Figure 4 Schematic diagram of the internal structure of the filter tank in Example 2 of the present application;

[0041] Explanation of reference numerals: 1. pre-oxidation tank; 11. water inlet main; 12. dosing port; 13. first outlet pipe; 2. mechanical mixing tank; 21. stirring device; 22. second outlet pipe; 3. flocculation sedimentation tank; 31. third outlet pipe; 311. first on-off valve; 4. filter tank; 41. filter tank body; 411. filter area; 412. water inlet area; 43. holding tank; 44. sedimentation tank body; 441. sewage pipe; 4411. opening and closing valve; 45. overflow channel; 451. sewage valve; 46. air washing device; 461. air distribution assembly; 4611. air distribution network pipe; 4612. nozzle; 462. Backwash air pipe; 463, backwash fan; 47, water washing device; 471, water distribution assembly; 4711, water distribution network pipe; 4712, water distribution nozzle; 472, backwash water pipe; 473, backwash water pump; 48, fourth water outlet pipe; 481, second on-off valve; 5, clean water tank; 6, isolation filter; 61, first drive member; 62, isolation filter plate; 621, isolation frame; 622, dirt collection filter; 623, dirt collecting tank; 63, rotating shaft; 7, decontamination device; 71, decontamination scraper; 72, drive assembly; 721, drive screw; 722, second drive member; 723, guide rod; 8, isolation mesh plate. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0043] Example 1:

[0044] Reference Figure 1The embodiment of the present application provides an integrated water plant based on a water purification system, including a water purification system. The water purification system includes a pre-oxidation tank 1, a mechanical mixing tank 2, a flocculation sedimentation tank 3, a filter tank 4 and a clear water tank 5. One side of the pre-oxidation tank 1 is connected to a water inlet main pipe 11, and a dosing port 12 is provided at the upper end of the pre-oxidation tank 1. The sewage to be treated can be input into the pre-oxidation tank 1 through the water inlet main pipe 11. Chemical oxidants are added to the pre-oxidation tank 1 through the dosing port 12 to oxidize organic matter in the sewage, which can effectively reduce the chemical oxygen demand and biochemical oxygen demand in the water, thereby reducing the burden of subsequent treatment. A first outlet pipe 13 is connected to the pre-oxidation tank 1. The first outlet pipe 13 is arranged near the upper end of the pre-oxidation tank 1. One end of the first outlet pipe 13 is connected to the mechanical mixing tank 2. A stirring device 21 is provided in the mechanical mixing tank 2. The pre-oxidized water flows into the mechanical mixing tank 2, and a flocculant is added to the mechanical mixing tank 2. The stirring device 21 is started to fully mix the flocculant with the water. The bottom of the mechanical mixing tank 2 is connected to a second outlet pipe 22, one end of which is connected to the flocculation sedimentation tank 3, so that the water mixed with the flocculant flows into the flocculation sedimentation tank 3. Larger flocs gradually settle to the bottom of the flocculation sedimentation tank 3 under the action of gravity and become sludge. The upper end of the flocculation sedimentation tank 3 is connected to a third outlet pipe 31, one end of which is connected to the filter tank 4. The water that has settled in the flocculation sedimentation tank 3 flows into the filter tank 4 through the third outlet pipe 31 for filtration. The bottom of the filter tank 4 is connected to a fourth outlet pipe 48, one end of which is connected to the clear water tank 5. The water filtered by the filter tank 4 eventually flows into the clear water tank 5 through the fourth outlet pipe 48. A first on-off valve 311 is installed on the third outlet pipe 31, and a second on-off valve 481 is connected to the fourth outlet pipe 48.

[0045] Reference Figure 2 and Figure 3 The filter tank 4 includes a filter tank body 41 and a backwash system. The filter tank body 41 is provided with a filter area 411 and a water inlet area 412. The filter area 411 is located below the water inlet area 412. One end of the third outlet pipe 31 is specifically connected to the water inlet area 412 of the filter tank 4. The filter area 411 is filled with a number of filter layers, and different filter materials are selected for filling in each filter layer. In this embodiment, four filter layers are specifically provided. An isolation mesh plate 8 is provided under each filter layer. The isolation mesh plate 8 is fixedly connected to the inner side of the filter tank body 41, and the isolation mesh plate 8 is arranged in a wavy shape. The aperture of the mesh in each isolation mesh plate 8 is determined according to the filter layer above the isolation mesh plate 8, so that the isolation mesh plate 8 can smoothly carry filter materials of different sizes, and the filter materials between adjacent filter layers are not easily mixed.

[0046] The isolation mesh plate 8 can be made of different materials according to different application scenarios. For example, for oily wastewater, it is recommended to use an isolation mesh plate 8 made of polypropylene; for domestic water treatment, it is advisable to choose PE material products that are acid and alkali resistant and have strong antioxidant capabilities.

[0047] Reference Figure 2 An isolation filter 6 is also provided between the water inlet area 412 and the filtration area 411. The isolation filter 6 includes an isolation filter plate 62 and a first drive member 61. The isolation filter plate 62 includes an isolation frame 621 and a dirt-catching filter screen 622 fixed to the inner wall of the isolation frame 621, and a dirt collecting trough 623 is formed between the inner wall of the isolation frame 621 and the side wall of the dirt-catching filter screen 622. The dirt-catching filter screen 622 is used to isolate biofilm fragments and pollutants larger than the biofilm fragments. A rotating shaft 63 is fixed on one side end of the isolation frame 621, and the rotating shaft 63 is rotatably connected to the inner wall of the filter tank body 41 through a hinge support. The first drive member 61 is specifically configured as a servo motor, which is fixed on the outer wall of the filter tank body 41, and one end of the output shaft of the servo motor is passed through the filter tank body 41 and is coaxially fixedly connected to the rotating shaft 63. By starting the servo motor, the isolation filter plate 62 can be driven to rotate. In this embodiment, the filter tank body 41 is specifically configured as a rectangular hollow box; accordingly, the isolation frame 621 is also configured as a rectangular frame. The top of the filter tank 4 is connected to an overflow channel 45, and a drain valve 451 is installed on the overflow channel 45.

[0048] In other embodiments, the isolation filter 6 can be configured as a foldable filter plate, and the flow between the water inlet area 412 and the filtration area 411 can be controlled by extending and retracting the foldable filter plate. The isolation filter 6 can also be configured as two or more isolation filter plates 62 located on the same horizontal plane, with each isolation filter plate 62 being rotatably connected to the inner wall of the filter tank body 41. The flow between the water inlet area 412 and the filtration area 411 can be controlled by simultaneously rotating multiple isolation filter plates 62.

[0049] Reference Figure 1 and Figure 2 When the filter tank 4 is filtering the water, the first on-off valve 311 and the second on-off valve 481 are in the open state, the drain valve 451 is in the closed state, and the isolation filter plate 62 is rotated to the vertical state, so that the water inlet area 412 and the filter area 411 are normally connected. When it is necessary to flush the filter material in the filter tank 4, first close the first on-off valve 311 and the second on-off valve 481, and open the drain valve 451. Then use the backwash system to flush the filter material multiple times. Figure 2 and Figure 3 After the last flush, a large amount of pollutants are concentrated and float on the top of the water inlet area 412. The servo motor drives the isolation filter plate 62 to rotate to a horizontal state, isolating the water inlet area 412 from the filtration area 411, so that the pollutants in the water inlet area 412 are isolated in the water inlet area 412. The filter tank 4 is allowed to stand for a period of time. Since the opening of the sump 623 is facing the water inlet area 412, pollutants such as biofilm fragments can be deposited in the sump 623 under the action of gravity.

[0050] Rotate isolation filter plate 62 again until it is vertical. This allows the water inlet area 412 and the filter area 411 to connect again. Pollutants in sump 623 are located between isolation filter plate 62 and the inner wall of filter tank body 41. Some of the pollutants migrate to the bottom of sump 623 or adhere to filter screen 622, preventing biofilm fragments from reattaching to the filter media surface after backwashing, ensuring the long-term stable operation of filter tank 4.

[0051] Reference Figure 2 The backwash system includes an air wash unit 46 and a water wash unit 47. The air wash unit 46 comprises an air distribution assembly 461, a backwash air pipe 462, and a backwash fan 463. The air distribution assembly 461 comprises an air distribution mesh pipe 4611 and multiple air nozzles 4612 connected to the air distribution mesh pipe 4611. The air nozzles 4612 are arranged in a rectangular array. One end of the backwash air pipe 462 is connected to the air distribution mesh pipe 4611, and the other end is connected to the backwash fan 463. After compressed air is introduced into the backwash fan 463, the backwash fan 463 drives the compressed air into the air distribution mesh pipe 4611 and discharged through the air nozzles 4612.

[0052] Reference Figure 2 The water washing device 47 includes a water distribution network pipe 4711, a backwash water pipe 472, and a backwash water pump 473. The water distribution assembly 471 includes the water distribution network pipe 4711 and multiple water distribution nozzles 4712 connected to the water distribution network pipe 4711. The multiple water distribution nozzles 4712 are arranged in an array. One end of the backwash water pipe 472 is connected to the water distribution network pipe 4711, and the other end is connected to the clean water tank 5. The backwash water pump 473 is connected to the pipe section of the backwash water pipe 472. When the backwash water pump 473 is activated, the clean water collected in the clean water tank 5 is transported to the water distribution network pipe 4711, and sprayed out from the water distribution nozzles 4712 to rinse the filter media.

[0053] Reference Figure 2 Water distribution assembly 471 and air distribution assembly 461 are both located within filter tank body 41, below filter area 411, and water distribution nozzle 4712 and air nozzle 4612 are horizontally staggered. This layout rationally and efficiently utilizes space resources, ensures effective coverage of both air and water, and thus improves backwashing effectiveness.

[0054] The operating principle of this embodiment is as follows: the sewage to be treated is fed into the pre-oxidation tank 1 through the water inlet main 11. A chemical oxidant is added to the pre-oxidation tank 1 through the dosing port 12. The pre-oxidized water flows into the mechanical mixing tank 2. After the flocculant is added to the mechanical mixing tank 2, the stirring device 21 is activated to mechanically agitate the water entering the mechanical mixing tank 2. The treated water in the mechanical mixing tank 2 flows into the flocculation sedimentation tank through the second outlet pipe 22. Larger flocs settle to the bottom of the flocculation sedimentation tank 3 under the action of gravity. The water after sedimentation in the flocculation sedimentation tank 3 flows through the third outlet pipe 31 into the filter tank 4 for filtration, and finally enters the clear water tank 5.

[0055] When it is necessary to flush the filter media in the filter tank 4, first close the first on-off valve 311 and the second on-off valve 481, and open the drain valve 451. Then use the backwash system to flush the filter media multiple times. After the last flush, a large amount of pollutants are concentrated and float above the water inlet area 412; immediately start the servo motor to drive the isolation filter plate 62 to rotate to a horizontal state to separate the water inlet area 412 from the filter area 411, and the pollutants in the water inlet area 412 are isolated in the water inlet area 412. Let the filter tank 4 stand for a period of time, and pollutants such as biofilm fragments can be deposited in the sewage collection tank 623 under the action of gravity. Rotate the isolation filter plate 62 again and rotate it to a vertical state; at this time, rotate the isolation filter plate 62 so that the water inlet area 412 and the filter area 411 are connected again; open the first on-off valve 311 and the second on-off valve 481, and close the drain valve 451. This facilitates subsequent water purification.

[0056] Example 2:

[0057] Example 2 of the present application provides an integrated water plant based on a water purification system.

[0058] refer to Figure 4 , the difference between Example 2 of the present application and Example 1 is that: a receiving groove 43 is integrally formed on the inner wall of the filter pool body 41, the rotating shaft 63 in the isolation filter plate 62 is rotatably connected to the inner wall of the receiving groove 43, and the isolation filter plate 62 is arranged near the opening of the receiving groove 43. The cross-sectional area of the isolation filter plate 62 is equal to the area enclosed by the opening of the receiving groove 43, so that the isolation filter plate 62 can open and close the opening of the receiving groove 43 when it rotates. The bottom of the receiving groove 43 is also connected to the sedimentation tank body 44. The isolation filter plate 62 can be folded into the interior of the receiving groove 43 when not in use, without taking up extra space, and it is also convenient for cleaning the sediment in the sedimentation tank body 44.

[0059] In order to facilitate the movement of pollutants such as biofilm fragments in the sewage collection tank 623 into the sedimentation tank body 44 under the action of gravity, the area enclosed by the inner circle of the isolation frame 621 in the isolation filter plate 62 gradually shrinks towards the sewage collection filter 622.

[0060] refer to Figure 4 When the isolation filter plate 62 rotates so that the water inlet area 412 and the filter area 411 are in a connected state, the opening of the receiving tank 43 can be closed, so that pollutants such as biofilm fragments are not easily able to enter the filter area 411 and the water inlet area 412 along the opening of the receiving tank 43, thereby further preventing secondary pollution.

[0061] refer to Figure 4 The bottom of the sedimentation tank 44 is connected to a drain pipe 441, which is equipped with an on-off valve 4411. This facilitates regular cleaning of sediment, prevents clogging, and maintains smooth system operation. The on-off valve 4411 can be a solenoid valve or a manual ball valve, so that the appropriate opening method can be selected according to actual conditions.

[0062] refer to Figure 4 The filter tank 4 is also provided with a decontamination device 7, which includes a decontamination scraper 71 and a driving assembly 72. The decontamination scraper 71 is located in the receiving groove 43, and one end of the decontamination scraper 71 is against the isolation filter plate 62. The driving assembly 72 includes a driving screw 721 and a second driving member 722. Both ends of the driving screw 721 are rotatably connected to the inner side wall of the receiving groove 43; a guide rod 723 is provided on one side of the driving screw 721, and both ends of the guide rod 723 are fixedly connected to the inner side wall of the receiving groove 43, and the guide rod 723 is arranged parallel to the driving screw 721. In this embodiment, the guide rod 723 is configured to be a round rod, and the diameter of the guide rod 723 is larger than the diameter of the driving screw 721. The guide rod 723 passes through the decontamination scraper 71, and the driving screw 721 passes through the decontamination scraper 71 and is threadedly connected to the decontamination scraper 71. The second driving member 722 is specifically configured as a drive motor, which is fixed to the outer wall of the filter tank body 41. One end of the output shaft of the drive motor is coaxially fixedly connected to the drive screw 721 to drive the drive screw 721 to rotate. When the drive motor is activated, the decontamination scraper 71 can be driven to move in a vertical direction to scrape off contaminants such as biofilm fragments on the isolation filter plate 62.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An integrated water plant based on a water purification system, characterized by: The invention comprises a water purification system, wherein the water purification system comprises a pre-oxidation tank (1), a mechanical mixing tank (2), a flocculation sedimentation tank (3), a filter tank (4) and a clear water tank (5) which are connected in sequence; the filter tank (4) comprises a filter tank body (41) and a backwash system; the filter tank body (41) is provided with a filter area (411) and a water inlet area (412); the filter area (411) is filled with a plurality of filter layers; the filter area (411) is located below the water inlet area (412); an isolation filter (6) is movably provided in the filter tank (4); the isolation filter (6) is used to connect and disconnect the water inlet area (412) and the filter area (411); the isolation filter (6) comprises an isolation filter plate (62) and a first driving member (61); one end of the isolation filter plate (62) is rotatably connected to the filter tank body (41); the first driving member (61) is used to drive the isolation filter plate (62) to rotate; The isolation filter plate (62) comprises an isolation frame (621) and a dirt-collecting filter screen (622) fixed to the inner side wall of the isolation frame (621), and a dirt-collecting trough (623) is formed between the inner side wall of the isolation frame (621) and the side wall of the dirt-collecting filter screen (622); A receiving groove (43) is provided on the inner wall of the filter tank body (41), and the isolation filter plate (62) can open and close the opening of the receiving groove (43) when rotating; the bottom of the receiving groove (43) is also connected to the sedimentation tank body (44), and the area enclosed by the inner circle of the isolation frame (621) gradually shrinks towards the direction close to the pollution filter screen (622); The decontamination device (7) further comprises a decontamination scraper (71) and a driving assembly (72). The decontamination scraper (71) is slidably disposed in the accommodating groove (43), and one end of the decontamination scraper (71) abuts against the isolation filter plate (62). The driving assembly (72) is used to drive the decontamination scraper (71) to slide.

2. The integrated water plant based on the water purification system according to claim 1, characterized in that: The sedimentation tank body (44) is connected to a sewage discharge pipe (441), and an opening and closing valve (4411) is provided on the sewage discharge pipe (441).

3. The integrated water plant based on the water purification system according to claim 1, characterized in that: The driving assembly (72) includes a driving screw (721) and a second driving member (722), wherein the driving screw (721) is rotatably arranged in the accommodating groove (43), and the second driving member (722) is used to drive the driving screw (721) to rotate; a guide rod (723) is provided on one side of the driving screw (721), and the guide rod (723) is arranged parallel to the driving screw (721); the guide rod (723) passes through the decontamination scraper (71), and the driving screw (721) passes through the decontamination scraper (71) and is threadedly connected to the decontamination scraper (71).

4. The integrated water plant based on the water purification system according to claim 1, characterized in that: The backwash system comprises an air washing device (46) and a water washing device (47), wherein the air washing device (46) comprises an air distribution assembly (461), and the water washing device (47) comprises a water distribution assembly (471); the water distribution assembly (471) and the air distribution assembly (461) are both located within the filter tank body (41), and the water distribution assembly (471) and the air distribution assembly (461) are both located below the filter area (411).

5. The integrated water plant based on the water purification system according to claim 4, characterized in that: The air distribution assembly (461) includes an air distribution network tube (4611) and a plurality of air jet heads (4612) connected to the air distribution network tube (4611), wherein the plurality of air jet heads (4612) are distributed in an array; the air washing device (46) further includes a backwash air pipe (462), one end of the backwash air pipe (462) is connected to the air distribution network tube (4611), and the other end is connected to a backwash fan (463).

6. The integrated water plant based on the water purification system according to claim 4, characterized in that: The water distribution assembly (471) includes a water distribution network pipe (4711) and a plurality of water distribution nozzles (4712) connected to the water distribution network pipe (4711), wherein the plurality of water distribution nozzles (4712) are distributed in an array; the water washing device (47) further includes a backwash water pipe (472), one end of the backwash water pipe (472) is connected to the water distribution network pipe (4711), and the other end is connected to the clean water tank (5), and the backwash water pipe (472) is connected to a backwash water pump (473).

7. The integrated water plant based on the water purification system according to claim 1, characterized in that: An isolation mesh plate (8) is provided below each filter layer, and the isolation mesh plate (8) is provided in a wave shape.

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