Precipitation and filtration integrated equipment

Abstract

The utility model relates to the field of sewage treatment, and provides sedimentation and filtration integrated equipment which comprises a coagulation reaction tank, a sedimentation tank and a filter tank which are communicated in sequence, the coagulation reaction tank comprises a first-stage coagulation reaction tank and two second-stage coagulation reaction tanks, the two second-stage coagulation reaction tanks are respectively positioned on the left side and the right side of the first-stage coagulation reaction tank and are isolated by flow guide plates, and water passing holes are reserved in the tops of the flow guide plates; the first-stage coagulation reaction tank is communicated with the second-stage coagulation reaction tank through the water passing hole; the first-stage coagulation reaction tank is communicated to the outside through a water inlet pipeline, a water inlet is formed in the initial end of the water inlet pipeline, and a water dispersing device is mounted at the tail end of the water inlet pipeline. The water dispersing device mounted at the tail end of the water inlet pipeline can be used for uniformly dispersing water flow, so that a coagulant is in full contact with sewage, and the coagulation effect is improved; through the optimized water flow path design, unnecessary power requirements are reduced, and therefore operation energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to a sedimentation filtration integrated equipment. BACKGROUND

[0002] In the related art, rural domestic sewage treatment projects have large volume, and the treatment scale of a single station area is small. With the development of technology and the demand of rural sewage, small sewage treatment integrated equipment, as the core technology of current village sewage treatment, is simple to install, convenient to maintain, stable in operation, and the effluent meets the standard, which becomes the key of rural sewage treatment equipment. Therefore, under the premise of ensuring the stability and standard of the treatment system, how to reduce the operation cost becomes an important point of the rural sewage treatment system. Therefore, the chemical auxiliary dosing system (for removing TP and TSS) becomes an important factor restricting the stable effluent standard and low operation cost.

[0003] Rural sewage is mainly a mixture of domestic sewage and processing sewage using agricultural products as raw materials, basically does not contain heavy metals and toxic and harmful substances, contains a certain amount of nitrogen and phosphorus, and is good in biodegradability. With the increasing improvement of rural discharge water quality indicators, the total phosphorus cannot meet the discharge requirements by relying on biochemical treatment. SUMMARY

[0004] The utility model provides a sedimentation filtration integrated equipment to solve the defects in the prior art, realizes the following technical effect: the water distributor installed at the end of the water inlet pipeline can uniformly disperse the water flow, so that the coagulant fully contacts with the sewage, and the coagulation effect is improved; through the optimized water flow path design, unnecessary power demand is reduced, and the operation energy consumption is reduced.

[0005] The sedimentation filtration integrated equipment according to an embodiment of the utility model comprises a coagulation reaction tank, a sedimentation tank and a filter tank which are sequentially communicated.

[0006] The coagulation reaction tank comprises one primary coagulation reaction tank and two secondary coagulation reaction tanks, the two secondary coagulation reaction tanks are respectively located at the left side and the right side of the primary coagulation reaction tank and are isolated by a flow guide plate, a water passing hole is left at the top of the flow guide plate, and the primary coagulation reaction tank and the secondary coagulation reaction tank are communicated through the water passing hole.

[0007] The primary coagulation reaction tank is communicated to the outside through a water inlet pipeline, the initial end of the water inlet pipeline forms a water inlet, and a water distributor is installed at the end of the water inlet pipeline.

[0008] According to an embodiment of the utility model, the water distribution pipeline extends from the secondary coagulation reaction tank to the sedimentation tank, a plurality of water distribution inlets are arranged on the part of the water distribution pipeline in the secondary coagulation reaction tank, and a plurality of water distribution outlets are arranged on the part of the water distribution pipeline in the sedimentation tank.

[0009] According to one embodiment of the present application, the bottom of the sedimentation tank is provided with a plurality of sludge collecting hoppers, each of which is connected to the outside through a blowdown pipeline.

[0010] According to one embodiment of the present application, the top of the sedimentation tank is provided with an overflow weir, the outlet of the overflow weir is connected to a water inlet weir groove at the top of the filter tank, and the top of the water inlet weir groove is open to allow the overflow treatment water to enter the filter tank.

[0011] According to one embodiment of the present application, in the height direction of the sedimentation tank, a flow guide structure is further provided between the overflow weir and the water distribution pipeline, the flow guide structure has a flow guide surface, and the flow guide surface is inclined relative to the height direction of the sedimentation tank to allow the sludge in the sewage to slide along the flow guide surface to the bottom of the sedimentation tank.

[0012] According to one embodiment of the present application, the flow guide structure includes a plurality of flow guide pipes filled in the middle of the sedimentation tank, each of the flow guide pipes is parallel to each other and inclined relative to the height direction of the sedimentation tank, and the plurality of flow guide pipes are arrayed on the horizontal cross section of the sedimentation tank.

[0013] According to one embodiment of the present application, a hollow water collecting pipe and a plurality of rotating filter discs are installed in the filter tank, one end of the hollow water collecting pipe is closed and the other end forms a clean water outlet, the rotating filter discs are fixedly installed around the hollow water collecting pipe and are in communication with the hollow water collecting pipe, and the rotating filter discs are provided with a filter structure; the hollow water collecting pipe is rotatably arranged relative to the sedimentation tank and is driven to rotate by a rotating motor.

[0014] According to one embodiment of the present application, the sedimentation and filtration integrated equipment further comprises:

[0015] The backwashing device comprises a backwashing suction cup, a backwashing water pump, and a communication pipe for connecting the backwashing suction cup and the backwashing water pump, wherein the backwashing suction cup is fixed on both sides of the rotating filter disc by a suction cup fixing device for washing the filter structure, and the backwashing suction cup is connected to the backwashing water pump through the communication pipe.

[0016] According to one embodiment of the present application, the sedimentation and filtration integrated equipment further comprises:

[0017] A water outlet pool is located downstream of the filter pool, the water outlet pool is communicated with the water outlet, and a water outlet adjusting weir is arranged in the water outlet pool and away from the filter pool, wherein the water outlet adjusting weir comprises a water outlet weir and a water outlet adjusting mechanism, the water outlet adjusting mechanism is adapted to adjust the height of the water outlet weir, and the water outlet weir is communicated to a water outlet on the water outlet pool.

[0018] According to an embodiment of the present application, a static hydraulic mixer is arranged in the water inlet pipeline.

[0019] Therefore, in order to solve the technical defects existing in the above-mentioned related technology, the present application provides a sedimentation and filtration integrated equipment, which has at least the following advantages compared with the related technology.

[0020] (1) Efficient mixing: the water disperser installed at the end of the water inlet pipeline can uniformly disperse the water flow, so that the coagulant and sewage are in full contact, and the coagulation effect is improved.

[0021] (2) Optimized water flow path: through the design of the flow guide plate isolation and reserved water passage, the water flow smoothly transitions from the primary coagulation reaction pool to the secondary coagulation reaction pool, enhancing the controllability and stability of the water flow, and helping to improve the coagulation efficiency.

[0022] (3) Simplified structure: the coagulation reaction pool of the equipment is designed as one primary pool and two secondary pools, and the natural transition of water flow is realized through a simple flow guide plate structure, which simplifies the internal structure of the equipment and is convenient for manufacturing and maintenance.

[0023] (4) Save space: through compact design, the equipment can effectively utilize space and reduce the occupied area, which is particularly important for sewage treatment sites with limited space.

[0024] (5) Reduce energy consumption: through the optimized water flow path design, unnecessary power demand is reduced, thereby reducing the operating energy consumption.

[0025] (6) Improve treatment effect: through the setting of two-stage coagulation reaction pool, the coagulation process is more thorough, the effect of subsequent sedimentation and filtration is improved, and the effluent water quality meets the standard.

[0026] (7) Easy to operate and maintain: the structural design of the equipment makes it easier for operators to perform routine monitoring and maintenance work, reduces the possibility of failure, and reduces operating costs. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 is one of the structural schematic diagram of the integrated equipment for sedimentation and filtration provided by the present application.

[0029] Figure 2 is the second structural schematic diagram of the integrated equipment for sedimentation and filtration provided by the present application.

[0030] Figure 3 is the third structural schematic diagram of the integrated equipment for sedimentation and filtration provided by the present application.

[0031] Figure 4 is the fourth structural schematic diagram of the integrated equipment for sedimentation and filtration provided by the present application.

[0032] Figure 5 is the fifth structural schematic diagram of the integrated equipment for sedimentation and filtration provided by the present application.

[0033] Reference signs:

[0034] 10, box; 20, primary coagulation reaction tank; 30, secondary coagulation reaction tank; 40, sedimentation tank; 50, filter tank; 101, static hydraulic mixer; 201, water distributor; 202, guide plate; 301, water passage; 302, grid partition; 401, water distribution pipeline; 402, guide pipe; 403, overflow weir; 404, blowdown pipeline; 405, sludge collecting hopper; 501, inlet weir tank; 502, hollow water collecting pipe; 503, rotating filter disc; 504, outlet regulating weir; 505, rotating motor; 506, backwash pump. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0036] In the description of the embodiments of the utility model, it needs to be explained that, the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as a limitation on the embodiments of the utility model that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0038] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0039] The utility model discloses a kind of integrated equipment of sedimentation filtration, it needs to be pointed out that, the equipment can be used to treat domestic sewage, with chemical phosphorus removal, simultaneously with the function of removing suspended solids.

[0040] As Figures 1 to 4 As shown in the integrated equipment of sedimentation filtration according to the embodiments of the utility model, it includes coagulation reaction tank, sedimentation tank 40 and filter tank 50 in turn.

[0041] The coagulation reaction tank comprises a primary coagulation reaction tank 20 and two secondary coagulation reaction tanks 30, the two secondary coagulation reaction tanks 30 are respectively located at the left and right sides of the primary coagulation reaction tank 20 and are isolated by a flow guide plate 202, a water passing hole 301 is left at the top of the flow guide plate 202, and the primary coagulation reaction tank 20 and the secondary coagulation reaction tank 30 are communicated through the water passing hole 301. The primary coagulation reaction tank 20 is communicated to the outside through a water inlet pipe, the initial end of the water inlet pipe forms a water inlet, and a water distributor 201 is installed at the terminal end of the water inlet pipe.

[0042] Specifically, for the integrated sedimentation and filtration device, the components are introduced as follows.

[0043] The primary coagulation reaction tank 20 is located at the front end of the whole system and is responsible for the initial coagulation treatment. The water inlet pipe is used to guide the water into the primary coagulation reaction tank 20, and the water distributor 201 is installed at the terminal end of the water inlet pipe, which is used to uniformly disperse the water flow and increase the contact area between the coagulant and the sewage, thereby improving the coagulation effect.

[0044] The secondary coagulation reaction tank 30 has two, which are respectively located at the left and right sides of the primary coagulation reaction tank 20. The two secondary coagulation reaction tanks 30 are isolated by the flow guide plate 202, but the flow guide plate 202 has the water passing hole 301 at the top, which allows the treated water to pass through. The two reaction tanks are used for further coagulation treatment to strengthen the coagulation effect.

[0045] The sedimentation tank 40 receives the water flow from the secondary coagulation reaction tank 30, uses the gravity to make the suspended solids precipitate, and achieves the effect of solid-liquid separation. The precipitated sludge is collected in the sludge collecting hopper 405 at the bottom and is discharged through the sewage pipe 404.

[0046] The filtration tank 50 receives the water treated by the sedimentation tank 40, further removes the suspended solids and other impurities in the water through the filter medium, and finally obtains a relatively pure water body.

[0047] Further, the working principle and process of the integrated sedimentation and filtration device are described as follows: sewage enters the first-stage coagulation reaction tank 20 through the water inlet pipeline, and the water disperser 201 at the end of the pipeline disperses the water flow to facilitate better mixing with the coagulant. In the first-stage coagulation reaction tank 20, the coagulant is fully mixed with the sewage, and the coagulation reaction begins. The suspended particles and colloidal substances in the water begin to coagulate into larger flocculent substances. The treated water flows into the two second-stage coagulation reaction tanks 30 through the water flow holes 301 at the top of the flow guide plate 202, and the coagulation reaction continues. After the two-stage coagulation reaction, the water flows into the sedimentation tank 40, where the larger flocculent substances sink due to gravity, forming sludge and depositing at the bottom of the tank, while the clear upper water flows out through the overflow weir 403. The supernatant flows into the filter tank 50, where the remaining suspended substances are further removed by the filter medium to ensure the cleanliness of the effluent. The water treated by the filter tank 50 meets the discharge standard and can be safely discharged or reused.

[0048] As described above, the entire device realizes preliminary coagulation treatment, sedimentation separation, and final filtration and purification of sewage through such a process, thereby achieving the purpose of purifying water quality.

[0049] In related technologies, rural domestic sewage treatment projects have large capacity, and the treatment scale of a single station area is small. With the development of technology and the demand for rural sewage, small sewage treatment integrated equipment, as the core technology of current village-level sewage treatment, is simple to install, easy to maintain, stable in operation, and has standard effluent, which is the key to rural sewage treatment equipment. Therefore, under the premise of ensuring the stability and standard of the treatment system, how to reduce the operating cost becomes an important point of the rural sewage treatment system. Therefore, the chemical auxiliary dosing system (for removing TP and TSS) becomes an important factor for stable and standard effluent and low operating cost.

[0050] Rural sewage is mainly a mixture of domestic sewage and processing sewage using agricultural products as raw materials, and basically does not contain heavy metals and toxic and harmful substances, contains a certain amount of nitrogen and phosphorus, and is good in biodegradability. With the increasing improvement of rural water quality indicators, the total phosphorus cannot meet the discharge requirements by relying solely on biochemical treatment.

[0051] Therefore, in order to solve the technical defects in the related art, the present application provides an integrated sedimentation and filtration device, which has at least the following advantages compared with the related art.

[0052] (1) Efficient mixing: the water disperser 201 installed at the end of the water inlet pipeline can uniformly disperse the water flow, so that the coagulant fully contacts with the sewage, and the coagulation effect is improved.

[0053] (2) Optimized water flow path: The design of the deflector 202 isolates and reserves the water passage holes 301, allowing the water flow to smoothly transition from the primary coagulation reaction tank 20 to the secondary coagulation reaction tank 30, enhancing the controllability and stability of the water flow, and helping to improve coagulation efficiency.

[0054] (3) Simplified structure: The coagulation reaction tank of the device is designed as one primary tank and two secondary tanks, and the natural transition of water flow is achieved through the simple deflector 202 structure, simplifying the internal structure of the device and facilitating manufacturing and maintenance.

[0055] (4) Space saving: Through compact design, the device can effectively utilize space and reduce the footprint, which is particularly important for wastewater treatment sites with limited space.

[0056] (5) Reduced energy consumption: Through the optimized water flow path design, unnecessary power demand is reduced, thereby reducing the operating energy consumption.

[0057] (6) Improved treatment effect: The two-stage coagulation reaction tank design makes the coagulation process more thorough, improving the subsequent sedimentation and filtration effect, and ensuring that the effluent water quality meets the standards.

[0058] (7) Easy to operate and maintain: The structural design of the device makes it easier for operators to perform routine monitoring and maintenance work, reducing the likelihood of failure and lowering operating costs.

[0059] As shown in Figure 2 some embodiments of the present application, the integrated sedimentation and filtration device further comprises a water distribution pipeline 401, which extends from the secondary coagulation reaction tank 30 to the sedimentation tank 40, and a plurality of water distribution inlets are provided on the part of the water distribution pipeline 401 within the secondary coagulation reaction tank 30, and a plurality of water distribution outlets are provided on the part of the water distribution pipeline 401 within the sedimentation tank 40.

[0060] In this embodiment, the main function of the water distribution pipeline 401 is to transport the water that has undergone preliminary treatment between the secondary coagulation reaction tank 30 and the sedimentation tank 40, and to ensure that the water flow is evenly distributed within the sedimentation tank 40 to improve the sedimentation effect.

[0061] The water distribution pipeline 401 extends from the secondary coagulation reaction tank 30 to the sedimentation tank 40, i.e. after the treatment in the secondary coagulation reaction tank 30 is completed, the water flow enters the sedimentation tank 40 through the water distribution pipeline 401 for further treatment. The water distribution pipeline 401 is provided with water distribution inlets within the secondary coagulation reaction tank 30, which are used to receive the water flow after coagulation reaction. The part of the water distribution pipeline 401 within the sedimentation tank 40 is provided with water distribution outlets, which are used to evenly distribute the water flow to different areas of the sedimentation tank 40.

[0062] In this way, through the design of the water distribution pipe 401, it can ensure that the water flow enters the sedimentation tank 40 smoothly and uniformly, avoiding the situation that the local water flow is too fast, which leads to poor sedimentation effect. The design of the water distribution outlet enables the water flow to cover a larger area, which is conducive to the settlement of solid particles and improves the treatment capacity of the sedimentation tank 40. In addition, the design of the water distribution pipe 401 also helps to optimize the water flow state in the sedimentation tank 40, reduces the vortex and short circuit phenomenon, thereby improving the treatment efficiency and stability of the whole system.

[0063] As shown in Figure 1 According to some embodiments of the present application, the bottom of the sedimentation tank 40 is provided with a plurality of sludge collecting hoppers 405, and each sludge collecting hopper 405 is connected to the outside through a blowdown pipe 404.

[0064] In this way, the sludge collecting hopper 405 is used to collect the sludge or other precipitates that settle to the bottom of the tank during the sedimentation process. These precipitates are usually larger particles formed after coagulation and flocculation treatment, which will settle to the bottom of the tank under the action of gravity. The design of the sludge collecting hopper 405 enables the sludge to be concentrated in a specific area, which facilitates regular or on-demand cleaning, reduces the difficulty of cleaning, improves the operation efficiency, and at the same time, regular discharge of sludge through the blowdown pipe 404 can prevent excessive sludge accumulation at the bottom of the sedimentation tank 40, thereby affecting the sedimentation effect and ensuring the normal operation of the sedimentation tank 40.

[0065] As shown in Figure 1 According to some embodiments of the present application, the top of the sedimentation tank 40 is provided with an overflow weir 403, and the outlet of the overflow weir 403 is connected to the inlet weir groove 501 located at the top of the filter tank 50, and the top of the inlet weir groove 501 is open to enable the overflow treatment water to enter the filter tank 50.

[0066] In this embodiment, the overflow weir 403 is used to control the water level in the sedimentation tank 40, to ensure that it will not overflow or affect the sedimentation effect due to excessive water volume. Through the design of the overflow weir 403, the supernatant after sedimentation (i.e. water that has removed most of the suspended solids) can overflow into the next treatment unit, while the sludge at the bottom remains in the sedimentation tank 40.

[0067] In the subsequent structural design of the sedimentation tank 40, the outlet of the overflow weir 403 is directly connected to the inlet weir groove 501 at the top of the filter tank 50, so that the treated supernatant can enter the filter tank 50 through this channel. At the same time, since the top of the inlet weir groove 501 is open, it can ensure that the overflow treatment water can flow smoothly into the filter tank 50 without being blocked by any obstacles.

[0068] Specifically, the specific working principle of the above structure is as follows: when the water level in the sedimentation tank 40 reaches a certain height, the supernatant will overflow through the overflow weir 403 and flow into the water inlet weir groove 501 at the top of the filter tank 50. The design of the water inlet weir groove 501 ensures that the water can be uniformly distributed to the entire cross section of the filter tank 50, avoiding local water flow too fast or uneven, thereby improving the filtering effect.

[0069] In this way, the design of the overflow weir 403 helps to maintain the water level in the sedimentation tank 40 at a stable level, preventing the water level from being too high and affecting the sedimentation effect or causing overflow. By connecting the outlet of the overflow weir 403 with the water inlet weir groove 501 at the top of the filter tank 50, it ensures that the treated water can be efficiently transferred to the next stage of the treatment process. In addition, the open design of the water inlet weir groove 501 not only simplifies the structure, but also avoids the blockage problem that may be caused by a closed design, ensuring smooth water flow and reducing the risk of recontamination.

[0070] As shown in Figure 1 and Figure 4 According to some embodiments of the present application, a flow guide structure is further provided between the overflow weir 403 and the water distribution pipeline 401 in the height direction of the re-sedimentation tank 40, and the flow guide structure has a flow guide surface that is inclined relative to the height direction of the sedimentation tank 40 to allow the sludge in the sewage to slide along the flow guide surface to the bottom of the sedimentation tank 40.

[0071] For example Figure 1 and Figure 4 The flow guide structure includes a plurality of flow guide pipes 402 filled in the middle of the sedimentation tank 40, each flow guide pipe 402 is parallel to each other and inclined relative to the height direction of the sedimentation tank 40, and the plurality of flow guide pipes 402 are arrayed on the horizontal cross section of the sedimentation tank 40.

[0072] In this embodiment, the presence of the flow guide structure helps to guide the water flow, avoiding direct impact on the bottom of the sedimentation tank 40, reducing disturbance to the settled sludge. The inclined design of the flow guide surface allows the sludge in the water flow to slide along the flow guide surface to the bottom of the sedimentation tank 40 under the action of gravity, rather than being resuspended.

[0073] At the same time, the flow guide structure can also optimize the water flow path, specifically, on the one hand, it can uniformly distribute the water flow: the plurality of flow guide pipes 402 are arrayed on the horizontal cross section of the sedimentation tank 40, which helps to uniformly distribute the water flow, making the water flow more gently into the sedimentation tank 40; on the other hand, it can reduce turbulence: the design of the flow guide pipe 402 reduces the turbulence of the water flow, helping to keep the water flow in the sedimentation tank 40 stable and improve the sedimentation effect.

[0074] It can be understood that in specific embodiments, the design features of the flow guide structure are as follows: (1) arrangement of the flow guide pipes 402: the flow guide pipes 402 are parallel to each other and are arranged obliquely relative to the height direction of the sedimentation tank 40, so that the water flow can flow smoothly along the inclined surface of the flow guide pipes 402 when entering the sedimentation tank 40. On the horizontal cross section of the sedimentation tank 40, the flow guide pipes 402 are arranged in an array, that is, the flow guide pipes 402 are not single but multiple, so that the water flow can be uniformly dispersed to each area of the sedimentation tank 40.

[0075] (2) inclination angle of the flow guide surface: the flow guide surface is arranged obliquely relative to the height direction of the sedimentation tank 40, and the specific inclination angle needs to be determined according to the actual working condition and design requirements. Generally, it is to make the water flow smoothly transition into the sedimentation tank 40 and help the sludge slide to the bottom along the flow guide surface.

[0076] Further, the working principle of the above flow guide structure is introduced as follows: after the water flow enters the sedimentation tank 40 from the water distribution pipe 401, it will first pass through the flow guide structure. The flow guide pipes 402 in the flow guide structure uniformly guide the water flow to different positions of the sedimentation tank 40. Under the action of the inclined surface of the flow guide pipes 402, the sludge in the water flow will be guided to the bottom of the sedimentation tank 40, reducing the floating or resuspension of the sludge in the sedimentation tank 40, which can improve the sedimentation efficiency and ensure that the sludge at the bottom of the sedimentation tank 40 will not be stirred up again. The clear upper water (supernatant) will pass through the overflow weir 403 into the subsequent treatment unit, such as the filter tank 50, for further treatment.

[0077] From the above, through this design, the sedimentation tank 40 can more effectively complete the solid-liquid separation task, while maintaining the stability of the water flow and reducing the resuspension of the sludge, thereby improving the treatment effect of the entire sedimentation and filtration integrated equipment.

[0078] As shown in Figure 1 , Figure 2 and Figure 5 , according to some embodiments of the present application, a hollow water collecting pipe 502 and a plurality of rotating filter discs 503 are installed in the filter tank 50. One end of the hollow water collecting pipe 502 is closed and the other end forms a clean water outlet. The rotating filter discs 503 are fixedly installed around the hollow water collecting pipe 502 and are in communication with the hollow water collecting pipe 502. The rotating filter discs 503 are provided with a filter structure. The hollow water collecting pipe 502 is rotatably arranged relative to the sedimentation tank 40 and is driven to rotate by a rotating motor 505.

[0079] In the present embodiment, one end of the hollow water collecting pipe 502 is closed, and the other end forms a clean water outlet. Its role is to collect filtered clean water and guide it to the water outlet tank or the final discharge point. The rotating filter disc 503 is fixedly installed around the hollow water collecting pipe 502 and communicates with the hollow water collecting pipe 502. The rotating filter disc 503 is provided with a filter structure for filtering impurities in the treated water. For example, the rotating filter disc 503 is composed of a plurality of fan-shaped filter sheets, each filter disc has a diameter of 600mm to 1200mm, and the number of filter discs is 2 to 4. The filter cloth has a filter equivalent aperture of less than 10μm to ensure the filtering accuracy. The design of the rotating filter disc 503 makes the water flow through the filter disc, and the impurities in the water are trapped on the surface of the filter disc, and the clean water passes through the rotating filter disc 503 into the hollow water collecting pipe 502.

[0080] It can be understood that the hollow water collecting pipe 502 can rotate relative to the sedimentation tank 40 and is driven to rotate by the rotating motor 505. This design allows the filter disc to rotate periodically, thereby maintaining the cleanliness of the filter disc surface. The rotating mechanism helps to prevent the filter aperture on the filter disc from being blocked, ensuring the sustained effectiveness of the filtering effect.

[0081] Specifically, the specific working process of the present embodiment is as follows: after the water flow enters the filter tank 50, the impurities are trapped on the surface of the rotating filter disc 503 by the filter structure on the rotating filter disc 503, and the clean water passes through the rotating filter disc 503 into the hollow water collecting pipe 502. The filtered water flows through one end of the hollow water collecting pipe 502 (the clean water outlet) to the water outlet tank or is directly discharged. In order to maintain the cleanliness of the rotating filter disc 503, the hollow water collecting pipe 502 and the rotating filter disc 503 are driven to rotate by the rotating motor 505. This can periodically change the direction of the water flow, helping to remove the impurities on the surface of the filter disc. The rotating mechanism also helps to prevent the filter aperture on the filter disc from being blocked, improving the filtering effect.

[0082] Further, the device further comprises a backwashing device, the backwashing device comprising a backwashing suction disc, a backwashing water pump 506 and a communication pipe for communicating the backwashing suction disc and the backwashing water pump 506, wherein the backwashing suction disc is fixed on both sides of the rotating filter disc 503 by a suction disc fixing device for washing the filter structure, and the backwashing suction disc is connected with the backwashing water pump 506 through the communication pipe.

[0083] In this embodiment, the backwash suction cups are fixed on both sides of the rotating filter disc 503 by suction cup fixing devices, which function to remove the suspended matter attached to the filter structure through suction force, preventing the filter pore diameter from being blocked. The backwash water pump 506 is used to provide the suction force required for backwashing, and it is connected to the backwash suction cups through the connecting pipes. When the backwash water pump 506 is running, it will generate sufficient suction force to suck the dirt on the filter disc into the backwash suction cups and then discharge it. The connecting pipes are used to connect the backwash suction cups and the backwash water pump 506, ensuring that the suction force can be effectively transmitted to the backwash suction cups.

[0084] Specifically, the working principle of the backwashing device is as follows: when the filter structure on the rotating filter disc 503 needs to be cleaned, the backwash water pump 506 is started. The backwash water pump 506 transmits suction force to the backwash suction cups through the connecting pipes, causing them to generate sufficient suction force. The backwash suction cups are fixed on both sides of the filter disc, and they remove the suspended matter on the filter structure through suction force. The suction force of the suction cups can help remove the dirt attached to the filter cloth, keeping the filter pore diameter unblocked and thus improving the filtering effect. The dirt adsorbed on the backwash suction cups is sucked into the backwash water pump 506 through the connecting pipes and eventually discharged outside the device.

[0085] In this way, the design of the backwashing device enables the filter structure to be automatically cleaned regularly, reducing the need for manual intervention and improving the degree of automation of the device. Moreover, regular backwashing can effectively prevent the filter pore diameter from being blocked, thus ensuring the continuous and stable filtering effect. In addition, regular cleaning of the filter structure helps to prolong the service life of the device and reduce the frequency and cost of maintenance.

[0086] As shown in FIGS. Figure 1 and Figure 2 According to some embodiments of the present application, the integrated sedimentation and filtration device further comprises a water outlet tank located downstream of the filter tank 50. The water outlet tank is in communication with the clean water outlet, and a water outlet regulating weir 504 is arranged in the water outlet tank away from the filter tank 50. The water outlet regulating weir 504 comprises a water outlet weir and a water outlet regulating mechanism, and the water outlet regulating mechanism is adapted to adjust the height of the water outlet weir. The water outlet weir is connected to the water outlet on the water outlet tank.

[0087] In this embodiment, the specific process of water outlet is as follows: the filtered clean water flows into the water outlet tank through the clean water outlet. The water outlet tank receives the filtered water and controls the water level through the water outlet regulating weir 504. The water outlet regulating mechanism adjusts the height of the water outlet weir as needed to control the water level in the water outlet tank. By adjusting the height of the water outlet weir, the water level in the water outlet tank can be stabilized to avoid unstable water flow caused by water level fluctuations. Stable water level helps to ensure that the flow and pressure of the water outlet remain within a suitable range, thereby ensuring the quality of the water outlet. The design of the water outlet regulating weir 504 enables the treated water to flow out of the water outlet in a stable state.

[0088] In this way, the effluent regulating weir 504 can regulate the water level in the effluent tank, ensure the stability of the effluent flow, and thus improve the reliability of the treated water. Moreover, by adjusting the height of the effluent weir, the filter medium can be kept in a fully submerged state at all times, avoiding exposure of the filter medium due to changes in water level, which would affect the filtration effect. In addition, the design of the effluent regulating mechanism allows the operator to easily adjust the height of the effluent weir, simplifying the operation process and reducing the difficulty of operation.

[0089] As shown in Figure 1 and Figure 2 According to some embodiments of the present application, a static hydraulic mixer 101 is provided in the water inlet pipe.

[0090] In this embodiment, the static hydraulic mixer 101 is arranged in the water inlet pipe, after the coagulant dosing point, i.e. immediately before or after the coagulant is added to the sewage. It should be explained that the static hydraulic mixer 101 is a mixing device without moving parts, which achieves the mixing effect through special geometric shapes or internal components inside the pipe. The static mixer usually contains a series of staggered baffles or helical elements, which promote the generation of vortex or shear force in the water flow, thereby enhancing the mixing effect.

[0091] In specific applications, the static hydraulic mixer 101 can rapidly and uniformly mix the coagulant with the sewage, ensuring uniform distribution of the coagulant throughout the water flow. Through the design of the static mixer, the energy consumption and maintenance problems brought by traditional mechanical agitators can be avoided, while the contact efficiency of the coagulant with the sewage is improved. In addition, through the static hydraulic mixer 101, the coagulant and sewage are mixed more fully, which helps to reduce the amount of coagulant used, thereby reducing costs. At the same time, since the static hydraulic mixer 101 has no moving parts, it does not consume additional energy when working, and is more energy-efficient than mechanical agitators.

[0092] A specific embodiment of the integrated sedimentation and filtration equipment of the present application is given below with reference to the accompanying drawings.

[0093] As shown in Figures 1 to 5 A sedimentation and filtration integrated equipment for sewage treatment, comprising a box body 10, a primary coagulation reaction tank 20, a secondary coagulation reaction tank 30, a sedimentation tank 40, a filtration tank 50 and an effluent tank are arranged in the box body 10.

[0094] The water inlet of the water inlet pipe is located on one side of the integrated equipment on the box body 10, and a dedicated static hydraulic mixer 101 is arranged in the water inlet pipe and connected with the box body 10. The primary coagulation reaction tank 20, the secondary coagulation reaction tank 30 (2 tanks), the sedimentation tank 40 and the filtration tank 50 are arranged in the box body 10 in sequence.

[0095] The static hydraulic mixer 101 is provided with a coagulant dosing point in front of it, the water inlet pipeline is directly connected to the bottom of the first-stage coagulation reaction tank 20, and a diffuser 201 is arranged at the end of the pipeline. In the related art, when the conventional medicament and treated water are sprayed upward along the pipeline into the first-stage coagulation reaction tank, the water flow is too concentrated, which affects the mixing degree of the treated water and the coagulant. Therefore, in order to solve the defects in the related art, the device is provided with a diffuser 201 (such as a water distribution plate), and the water flow sprayed from the water inlet pipeline hits the water distribution plate and is then sprayed out through the dispersion holes, so that the water outlet area is larger, the water flow is more dispersed, the medicament and sewage are more uniformly mixed, and the water distribution flow rate at the bottom of the first-stage coagulation tank is reduced.

[0096] With the increase of the overflow section of the tank body, the hydraulic upflow velocity is further reduced, two flow guide plates 202 are symmetrically arranged at both sides in the first-stage coagulation reaction tank 20, so that the flocculant and the water to be treated are fully contacted and reacted in the first-stage coagulation reaction tank 20, thereby replacing the traditional first-stage reaction agitator. Further, after the medicament is fully mixed and reacted, it is uniformly distributed into two second-stage coagulation reaction tanks 30.

[0097] Two second-stage coagulation reaction tanks 30 are symmetrically arranged at both sides of the first-stage coagulation reaction tank 20. The flow guide plate 202 between the first-stage coagulation reaction tank 20 and the second-stage coagulation reaction tank 30 is provided with a water overflow hole 301, the water overflow hole 301 is arranged at the top of the flow guide plate 202, is 2200mm-2800mm away from the bottom of the tank, and is adjacent to the outer edge of the tank body 10, the width of the water overflow hole 301 is about 1300mm-1800mm, a coagulant dosing point is arranged at the water overflow hole 301, and a grid partition plate 302 is arranged in the second-stage coagulation reaction tank 30 in a jumping staggered manner, the grid partition plate 302 is made of stainless steel, the thickness of the plate is not less than 8mm, and the punching diameter is 20mm-50mm, thereby replacing the traditional second-stage reaction agitator, and then completely relying on hydraulic mixing to fully mix the coagulant and water to form alum flowers, and the alum flowers are stable and not easy to be brittle.

[0098] A water distribution pipeline 401 with a diameter of DN150-DN250 is arranged at the central position of the bottom of each second-stage coagulation reaction tank 30, the water distribution pipeline 401 is made of PVC-U pipe, water distribution inlets are arranged at both sides in a crossing manner, and the water distribution inlets are arranged at an angle of 45° downward. The water distribution pipeline 401 is completely welded to the water outlet side of the sedimentation tank 40, so that the entire water distribution pipeline 401 is arranged on the tank walls of the two sections of the sedimentation tank 40, two water distribution pipelines 401 are uniformly and symmetrically arranged at the bottom of the entire sedimentation tank 40, and a pipeline support is further arranged at the bottom of the sedimentation tank 40 to support the water distribution pipeline 401.

[0099] A plurality of groups of inclined flow guide pipes 402 are arranged in the upper middle part of the sedimentation tank 40, the diameter of the flow guide pipes 402 is 50 mm, the flow guide pipes 402 are arranged at an angle of 60° with the horizontal plane, and the flow guide pipes 402 are arranged above the support frame. An overflow weir 403 is arranged above the flow guide pipes 402, and a sludge collecting tank 405 is arranged at the bottom of the sedimentation tank 40, and the lower part of the sludge collecting tank 405 is communicated with a blowdown pipe 404. After the sewage is deposited in the sedimentation tank 40, the supernatant is discharged from the overflow weir 403, and the sludge deposited at the bottom of the tank slowly flows into the sludge collecting tank 405 along the bottom of the tank, and is discharged through the blowdown pipe 404 arranged on the bottom of the tank.

[0100] The outlet of the overflow weir 403 converges into the water inlet weir groove 501 of the subsequent filter tank 50, the filter tank 50 plays a buffering role, and at the same time, as a filter container, improves the water purification effect of the lifting device.

[0101] The water inlet of the filter tank 50 is realized through the water inlet weir groove 501, and the hollow water collecting pipe 502 and the rotating filter disc 503 are arranged in the tank. One end of the hollow water collecting pipe 502 is closed, and the other end forms a clean water outlet and is communicated with the water outlet tank, for conveying the filtered clean water to the water outlet tank. The rotating filter disc 503 is installed on and communicated with the hollow water collecting pipe 502, for filtering impurities in the treated water, and the filtered water can flow to the water outlet tank through the hollow water collecting pipe 502. The backwashing device is used to remove the suspended solids attached to the polyester fiber filter cloth, and prevent the filter holes of the filter cloth from being blocked. The backwashing device includes a backwashing suction cup, a backwashing water pump 506, and a communication pipe communicating the backwashing suction cup and the backwashing water pump 506. The backwashing suction cup is fixed on both sides of the rotating filter disc 503 through the suction cup fixing device to wash the filter cloth on both sides of the rotating filter disc 503. The backwashing suction cup is connected with the backwashing water pump 506 through the communication pipe, and by driving the backwashing water pump 506 to operate, the backwashing suction cup can wash away the suspended solids attached to the rotating filter disc 503, thereby improving the filtering effect of the rotating filter disc 503.

[0102] The rotating filter disc 503 is composed of 4-6 sector-shaped filter pieces, the diameter of the rotating filter disc 503 ranges from 600 mm to 1200 mm, the number of the rotating filter disc 503 is usually 2-4, and the filter equivalent aperture of the filter cloth is less than 10 μm; the cross-sectional shape of the backwashing suction port is rectangular, the width of the backwashing suction port ranges from 0.6 cm to 2.2 cm, and then the suction force of the backwashing suction port is larger, which helps to improve the washing effect of the backwashing suction port on the surface stains of the fiber filter cloth.

[0103] The water outlet adjusting weir 504 is arranged on the side of the water outlet tank far from the filter tank 50, wherein the water outlet adjusting weir 504 comprises a water outlet weir and a water outlet adjusting mechanism, the water outlet adjusting mechanism is adapted to adjust the height of the water outlet weir, thereby realizing the adjustment of the water level and the backwashing liquid level in the tank, which is helpful to improve the stability of the water flow and protect the full immersion of the filter medium.

[0104] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0105] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sedimentation filtration integrated apparatus characterized by, The coagulation reaction tank, the sedimentation tank and the filter tank are sequentially connected. The coagulation reaction tank comprises a primary coagulation reaction tank and two secondary coagulation reaction tanks, the two secondary coagulation reaction tanks are respectively located on the left and right sides of the primary coagulation reaction tank and are isolated by a flow guide plate, a water passing hole is left at the top of the flow guide plate, and the primary coagulation reaction tank and the secondary coagulation reaction tank are connected through the water passing hole. The primary coagulation reaction tank is connected to the outside through a water inlet pipeline, the beginning end of the water inlet pipeline forms a water inlet, and a water distributor is installed at the end of the water inlet pipeline.

2. The integrated sedimentation and filtration apparatus according to claim 1, wherein The water distribution pipeline extends from the secondary coagulation reaction tank to the sedimentation tank, and a plurality of water distribution inlets are arranged on the part of the water distribution pipeline in the secondary coagulation reaction tank, and a plurality of water distribution outlets are arranged on the part of the water distribution pipeline in the sedimentation tank.

3. The integrated sedimentation and filtration apparatus according to claim 2, wherein A plurality of sludge collecting hoppers are arranged at the bottom of the sedimentation tank, and each sludge collecting hopper is connected to the outside through a sewage discharge pipeline.

4. The integrated sedimentation and filtration apparatus according to claim 2, wherein An overflow weir is arranged at the top of the sedimentation tank, the outlet of the overflow weir is connected to a water inlet weir groove at the top of the filter tank, the top of the water inlet weir groove is open to allow the overflow treatment water to enter the filter tank.

5. The integrated sedimentation and filtration apparatus according to claim 4, wherein In the height direction of the sedimentation tank, a flow guide structure is further arranged between the overflow weir and the water distribution pipeline, the flow guide structure has a flow guide surface, and the flow guide surface is arranged obliquely relative to the height direction of the sedimentation tank to make the sludge in the sewage slide along the flow guide surface to the bottom of the sedimentation tank.

6. The integrated sedimentation and filtration apparatus according to claim 5, wherein The flow guide structure comprises a plurality of flow guide pipes filled in the middle of the sedimentation tank, each flow guide pipe is arranged obliquely relative to the height direction of the sedimentation tank and parallel to each other, and a plurality of flow guide pipes are arranged in an array on the horizontal section of the sedimentation tank.

7. The integrated sedimentation and filtration apparatus according to any one of claims 1 to 6, characterized in that, A hollow water collecting pipe and a plurality of rotating filter discs are installed in the filter tank, one end of the hollow water collecting pipe is closed and the other end forms a clean water outlet, the rotating filter discs are fixedly installed around the hollow water collecting pipe and are connected to the hollow water collecting pipe, the rotating filter discs are provided with filter structures, and the hollow water collecting pipe is rotatably arranged relative to the sedimentation tank and is driven to rotate by a rotating motor.

8. The integrated sedimentation and filtration apparatus according to claim 7, wherein Further comprising: A backwashing device comprising a backwashing suction disc, a backwashing water pump and a connecting pipe for connecting the backwashing suction disc and the backwashing water pump, wherein the backwashing suction disc is fixed on both sides of the rotating filter disc by a suction disc fixing device to wash the filter structure, and the backwashing suction disc is connected to the backwashing water pump through the connecting pipe.

9. The integrated sedimentation and filtration apparatus according to claim 7, wherein Further comprising: A water outlet tank located downstream of the filter tank, the water outlet tank is connected to the clean water outlet, and a water outlet adjusting weir is arranged in the water outlet tank away from the filter tank, wherein the water outlet adjusting weir comprises a water outlet weir and a water outlet adjusting mechanism, the water outlet adjusting mechanism is adapted to adjust the height of the water outlet weir, and the water outlet weir is connected to a water outlet on the water outlet tank.

10. The integrated sedimentation and filtration apparatus according to any one of claims 1 to 6, characterized in that, A static hydraulic mixer is arranged in the water inlet pipeline.

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