A biological sewage ecological pond purification and filtration system

Abstract

The invention discloses a biological sewage ecological pond purification and filtration system, comprising a sedimentation tank, a filter tank, a filter rotating plate, a biological treatment tank and a clear water tank. The filter tank is provided with a cylindrical water tank inside, a center rod is installed in the cylindrical water tank, two filter rotating plates are provided, the filter rotating plates can rotate axially around the center rod, the filter rotating plate comprises an outer plate frame, a filter plate, a closing plate and a flushing pipe, the outer plate frame is vertically arranged in a "mouth" shape, the outer plate frame has an inner vertical plate vertically close to the center rod, the filter plate and the closing plate are respectively installed on two vertical sides of the outer plate frame, the flushing pipe is arranged between the filter plate and the closing plate, the sedimentation tank is injected into the cylindrical water tank from a side close to the filter plate, a side of the bottom plate of the cylindrical water tank close to the filter plate is provided with a material extraction port, the closing plate is horizontally erected in the outer plate frame, the closing plate can rotate axially, and the closing plate can close the outer plate frame when it is vertical, and a flushing head is provided on the side of the flushing pipe facing the filter plate.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a biological sewage ecological pond purification and filtering system. Background Art

[0002] Ecological ponds are generally used for deep treatment of sewage, with low concentrations of influent pollutants, and are also called deep treatment ponds.

[0003] The existing ecological pond is mainly composed of a sedimentation tank, a physical filtration tank, an ecological treatment tank and a water purification tank. The sewage is first precipitated and removed by the sedimentation tank for large particles of impurities with a large weight. After being treated in the sedimentation tank, the sewage flows into the physical filtration tank, where the brushes, screens and other structures in the physical filtration tank intercept and remove the floating particles in the sewage. After the solid impurities in the sewage are removed by the sedimentation tank and the physical filtration tank, they are discharged into the ecological treatment tank. Nitrifying bacteria and aquatic plants such as calamus and foxtail algae that can purify sewage are cultivated in the ecological treatment tank. After being treated in the ecological treatment tank, the sewage can be better biologically purified. The sewage purified by the ecological treatment tank is discharged into the water purification tank. The water purification tank is equipped with ultraviolet sterilization lamps or bactericides are regularly added to kill harmful bacteria in the water to thoroughly purify the sewage.

[0004] When the physical filter pool of the existing ecological pond is filtering, the pollutants attached to the surface of the brush and screen will gradually increase. These pollutants will gradually fill the gaps between the brush bristles and the screen mesh, which will lead to a decrease in the pollution interception capacity and efficiency of the brush and screen. At this time, the brush or screen of the physical filter pool needs to be disassembled and cleaned to ensure the filtering capacity and efficiency of the brush or screen. However, the disassembly of the brush and screen is difficult, and the use and maintenance costs of the physical filter pool are high. Summary of the invention

[0005] In order to solve the problems mentioned in the above background technology, the present invention provides a biological sewage ecological pond purification and filtration system.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A biological sewage ecological pond purification and filtration system comprises a sedimentation tank, a filter tank, a filter rotating plate, a biological treatment tank and a clear water tank, wherein the filter tank is respectively connected with the sedimentation tank and the biological treatment tank, and the biological treatment tank is connected with the clear water tank, wherein the filter tank has a cylindrical water tank inside, wherein a center rod is installed in the cylindrical water tank, and wherein two filter rotating plates are provided, and the filter rotating plates can rotate around the axis of the center rod;

[0008] The filter rotating plate includes an outer plate frame, a filter plate, a closing plate and a flushing pipe. The outer plate frame is vertically arranged in a "mouth" shape, and has an inner vertical plate vertically close to the center rod. The filter plate and the closing plate are respectively installed on both vertical sides of the outer plate frame. The flushing pipe is arranged between the filter plate and the closing plate. The sewage in the sedimentation tank is injected into the cylindrical water tank from the side close to the filter plate.

[0009] A material extraction port is arranged on one side of the bottom plate of the cylindrical water tank close to the filter plate. The closing plate is horizontally arranged in the outer plate frame. The closing plate can rotate axially and can close the outer plate frame when the closing plate is vertical.

[0010] A flushing head is arranged on one side of the flushing pipe facing the filter plate.

[0011] Preferably, two filter rotating plates divide the interior of the cylindrical water tank into a sewage collection area and a water purification area, the biological treatment tank is only connected to the water purification area, and the sedimentation tank is only connected to the sewage collection area.

[0012] Preferably, the closing plate includes a cross-frame plate, a rotating shaft and a driven gear. The cross-frame plate is horizontally mounted in the outer plate frame, and the two sides of the cross-frame plate are in contact with the inner wall of the outer plate frame. The rotating shaft is installed at both ends of the cross-frame plate. The rotating shaft is inserted into the outer and inner vertical plates and can rotate axially. The inner vertical plate is hollow to form a control chamber, and the driven gear is coaxially installed at the end of the rotating shaft inserted into the control chamber.

[0013] Preferably, a driving rack is vertically installed in the control chamber, the driving rack can move vertically in the control chamber, the driving rack is meshed with the driven gear, a support spring is installed at the lower end of the driving rack, and the lower end of the support spring is connected to the bottom plate of the control chamber.

[0014] Preferably, a permanent magnet block is arranged on the driving rack, and an electromagnet capable of changing the vertical position of the permanent magnet block after generating magnetic force is arranged in the dirt collecting area.

[0015] Preferably, a water supply pipe is vertically installed in the control chamber, and the flushing pipe is inserted into the control chamber and communicated with the water supply pipe.

[0016] Preferably, a liquid-passing valve connected to the outside of the control room is installed at the lower end of the water supply main pipe, and the liquid-passing valve can be connected to the water injection pump group.

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

[0018] 1. The filter rotating plate of the present invention can freely rotate axially in the filter tank, thereby promoting the flow of sewage in the filter tank, and can still achieve a high filtering efficiency when the sewage flow is small.

[0019] 2. The present invention reduces the volume of the sewage collection area by reducing the angle between the filter rotating plates, and can efficiently concentrate and discharge the sewage with impurities in the sewage collection area. When the sewage is discharged, the filter rotating plates isolate the sewage collection area from the water purification area, and the filtered water in the water purification area will not be discharged, thereby avoiding waste of water resources.

[0020] 3. The present invention uses a flushing pipe to efficiently flush and clean the mesh of the filter plate with impurities attached, without the need to remove the filter rotating plate for cleaning, thereby greatly reducing the use and maintenance costs of the filter pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a biological sewage ecological pond purification and filtration system according to the present invention under one observation angle;

[0023] Figure 2 It is a structural schematic diagram of a biological sewage ecological pond purification and filtration system according to the present invention from another observation angle;

[0024] Figure 3 It is a schematic diagram of the local structure of the filter rotating plate of the present invention at one observation angle;

[0025] Figure 4 It is a schematic diagram of the local structure of the filter rotating plate of the present invention under another observation angle;

[0026] Figure 5 It is a partial side sectional view of the bottom plate of the cylindrical water tank after the filter rotating plates of the present invention rotate towards each other to reduce the sewage collection area.

[0027] In the figure: 1. sedimentation tank; 2. filtration tank; 201. cylindrical water tank; 202. extraction port; 21. center rod; 202. extraction port; 3. filter rotary plate; 301. control chamber; 31. outer plate frame; 311. horizontal plate; 312. outer vertical plate; 313. inner vertical plate; 32. filter plate; 33. closing plate; 331. horizontal frame plate; 332. rotating shaft; 333. driven gear; 34. flushing pipe; 341. horizontal frame pipe; 342. flushing head; 343. water supply main pipe; 344. liquid valve; 35. driving rack; 36. supporting spring; 37. permanent magnet block; 4. biological treatment tank; 5. clean water tank; 6. water inlet pipe; 7. infusion device; 8. electromagnet; 9. water injection pump group; 91. water injection head; 92. booster pump. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1-5 A biological sewage ecological pond purification and filtration system includes a sedimentation tank 1, a filter tank 2, a filter rotating plate 3, a biological treatment tank 4 and a clear water tank 5. The sedimentation tank 1, the biological treatment tank 4 and the clear water tank 5 are respectively surrounded by the filter tank 2, the sedimentation tank 1 is connected to the filter tank 2, the filter tank 2 is connected to the biological treatment tank 4, and the biological treatment tank 4 is connected to the clear water tank 5.

[0030] The external sewage to be treated is first injected into the sedimentation tank 1 through the water inlet pipe 6. The large particles of impurities in the sewage will gradually sink to the bottom of the sedimentation tank 1 and accumulate. The liquid in the upper part of the sedimentation tank 1 is transported to the filter tank 2 through the infusion device 7.

[0031] The filter pool 2 has a cylindrical water tank 201 inside, and a center rod 21 is vertically installed at the center of the cylindrical water tank 201. There are two filter rotating plates 3, and the filter rotating plates 3 are arranged outside the center rod 21. The filter rotating plates 3 can rotate axially around the center rod 21 in the cylindrical water tank 201.

[0032] The filter rotating plate 3 includes an outer plate frame 31, a filter plate 32, a closing plate 33 and a flushing pipe 34. The outer plate frame 31 is vertically arranged in a "mouth" shape. The outer plate frame 31 is composed of two horizontal plates 311, an outer vertical plate 312 close to the inner peripheral wall of the cylindrical water tank 201 and an inner vertical plate 313 close to the outer peripheral wall of the center rod 21. The filter plate 32 is installed on the side of the outer plate frame 31 facing the infusion device 7. The two filter rotating plates 3 divide the inside of the cylindrical water tank 201 into a sewage collection area and a water purification area, wherein the sewage collection area is the area of ​​the filter rotating plate 3 close to the infusion device 7, and the rest of the area is the water purification area. The two filter rotating plates 3 can rotate axially periodically within a certain range around the center rod 21, and the area range of the sewage collection area and the water purification area will change periodically, while the biological treatment tank 4 is only connected to the water purification area. After the sewage is injected into the sewage collection area of ​​the cylindrical water tank 201 by the infusion device 7, the filter rotary plate 3 rotates continuously to fan the sewage in the cylindrical water tank 201 to accelerate the flow, and the fine impurities floating in the sewage will be intercepted and filtered by the mesh of the filter plate 32 during the continuous rotation of the filter rotary plate 3. The sewage enters the clean water area after being filtered by the filter plate 32, and the impurities intercepted by the filter plate 32 stay and concentrate in the sewage collection area.

[0033] Visible impurities in the sewage in the water purification area are almost removed, and the sewage then flows into the biological treatment tank 4, in which nitrifying bacteria are cultured to treat nutrient-rich ammonia nitrogen substances in the sewage. The sewage treated by the biological treatment tank 4 flows into the clean water tank 5 for sterilization treatment, and finally purified water is discharged.

[0034] The closing plates 33 are provided with multiple ones, which are arranged vertically and installed on the side of the outer plate frame 31 away from the infusion device 7. The closing plates 33 include a cross plate 331, a rotating shaft 332 and a driven gear 333. The cross plate 331 is horizontally mounted between the outer vertical plate 312 and the inner vertical plate 313. The two sides of the cross plate 331 are in contact with the inner walls of the outer vertical plate 312 and the inner vertical plate 313. The rotating shaft 332 is installed at both ends of the cross plate 331. The rotating shaft 332 is respectively inserted into the outer vertical plate 312 and the inner vertical plate 313 and can rotate axially. The inner vertical plate 313 is hollow inside to form a control chamber 301. The driven gear 333 is coaxially installed at the end of the rotating shaft 332 inserted into the outer vertical plate 312.

[0035] A driving rack 35 is vertically installed in the control chamber 301. The driving rack 35 can move vertically in the control chamber 301. The driving rack 35 is engaged with the driven gear 333 of each vertically arranged closing plate 33, so that the driving rack 35 can drive the cross frame plate 331 to rotate synchronously with the driven gear 333 when moving vertically.

[0036] A support spring 36 is installed at the lower end of the driving rack 35, and the upper and lower ends of the support spring 36 are respectively connected to the driving rack 35 and the bottom plate of the control chamber 301. When the support spring 36 is at a normal length, the driving rack 35 is maintained at a specified position to keep the cross plate 331 in a horizontal state. At this time, the filtered sewage flow can smoothly pass through the gap between the cross plates 331 and flow into the clean water area.

[0037] During the filtration process of the filter rotating plate 3, the concentration of impurities in the sewage in the sewage collection area will gradually increase, and the mesh of the filter plate 32 will also be blocked by impurities, thereby reducing the filtration efficiency. At this time, the two filter rotating plates 3 rotate toward the infusion device 7 to further reduce the sewage collection area, thereby further increasing the impurity concentration in the sewage collection area. The bottom plate of the cylindrical water tank 201 is provided with a material extraction port 202, which is connected to the reduced sewage collection area, and the material extraction port 202 is in a closed state when the filter rotating plate 3 performs the filtration work.

[0038] A permanent magnet block 37 is installed at the lower end of the driving rack 35. After the filter rotating plate 3 rotates towards each other to reduce the dirt collecting area, an electromagnet 8 is arranged directly below the position of the permanent magnet block 37. After the permanent magnet block 37 moves to the top of the electromagnet 8, the electromagnet 8 is energized to generate magnetism to suck the driving rack 35 with the permanent magnet block 37 downward, drive the rack 35 to move downward, and drive each cross frame plate 331 to rotate to a vertical state.

[0039] The spacing between each of the cross plates 331 is the same as the width of the cross plates 331. After the cross plates 331 are rotated vertically, the spacing between the cross plates 331 will be filled. At this time, the water flow in the sewage collection area will no longer be able to flow out through the gaps between the cross plates 331. When the cross plates 331 are erected, they will isolate the sewage collection area from the water purification area.

[0040] After the sewage collection area is isolated, the pumping port 202 is opened, and sewage with high concentration of impurities in the sewage collection area will be pumped out by a water pump connected to the pumping port 202 for separate treatment.

[0041] The flushing pipe 34 includes a cross pipe 341 installed between the outer vertical plate 312 and the inner vertical plate 313. A plurality of the cross pipes 341 are vertically arranged in the outer plate frame 31. The cross pipe 341 is installed between the filter plate 32 and the closing plate 33. The cross pipe 341 has a plurality of flushing heads 342 arranged horizontally on one side of the filter plate 32.

[0042] A water supply pipe 343 is vertically installed in the control chamber 301, and the flushing pipe 34 is inserted into the control chamber 301 and connected to the water supply pipe 343. A liquid valve 344 connected to the outside of the control chamber 301 is installed at the lower end of the water supply pipe 343, and the liquid valve 344 is usually in a closed state.

[0043] A water injection pump group 9 is installed on the bottom plate of the cylindrical water tank 201. The water injection pump group 9 has a water injection head 91 that penetrates the bottom plate of the cylindrical water tank 201. After the filter rotating plate 3 rotates towards each other to reduce the sewage collecting area, the water injection head 91 is located directly below the liquid valve 344 to dock with the liquid valve 344. After the horizontal frame plate 331 rotates vertically and the sewage in the sewage collecting area is exhausted, the pressure pump 92 connected to the water injection head 91 delivers high-pressure clean water to the water injection head 91. After the clean water rushes out of the water injection head 91, it rushes open the liquid valve 344 and is injected into the water supply main pipe 343, and is diverted to each horizontal frame pipe 341. The high-pressure clean water is finally ejected at high speed from the flushing head 342 to flush out the impurities attached to the mesh of the filter plate 32. The sewage generated by flushing the filter plate 32 will be temporarily stored in the sewage collecting area and discharged through the suction port 202 for separate treatment.

[0044] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biological sewage ecological pond purification and filtration system, comprising a sedimentation tank (1), a filtration tank (2), a filtration rotating plate (3), a biological treatment tank (4) and a clear water tank (5). The filtration tank (2) is respectively communicated with the sedimentation tank (1) and the biological treatment tank (4), and the biological treatment tank (4) is communicated with the clear water tank (5). It is characterized in that: The interior of the filtration tank (2) has a cylindrical water tank (201). A central rod (21) is installed in the cylindrical water tank (201). There are two filtration rotating plates (3), and the filtration rotating plates (3) can rotate axially around the central rod (21); The filtration rotating plate (3) includes an outer plate frame (31), a filtration plate (32), a closing plate (33) and a flushing pipe (34). The outer plate frame (31) is erected in a "mouth" shape and has an inner vertical plate (313) that closely adheres to the central rod (21) vertically. The filtration plate (32) and the closing plate (33) are respectively installed on the two vertical sides of the outer plate frame (31). The flushing pipe (34) is arranged between the filtration plate (32) and the closing plate (33). The sewage in the sedimentation tank (1) is injected into the cylindrical water tank (201) from the side close to the filtration plate (32); On one side of the bottom plate of the cylindrical water tank (201) close to the filtration plate (32), there is a material extraction port (202). The closing plate (33) is horizontally erected in the outer plate frame (31), and the closing plate (33) can rotate axially. When the closing plate (33) is vertical, it can close the outer plate frame (31); On the side of the flushing pipe (34) facing the filtration plate (32), there is a flushing head (342); The closing plate (33) includes a horizontal frame plate (331), a rotating shaft (332) and a driven gear (333). The horizontal frame plate (331) is horizontally erected in the outer plate frame (31), and both sides of the horizontal frame plate (331) are in contact with the inner side wall of the outer plate frame (31). The rotating shaft (332) is installed at both ends of the horizontal frame plate (331). The rotating shaft (332) is inserted into the outer and inner vertical plates (313) and can rotate axially. The interior of the inner vertical plate (313) is hollow to form a regulation chamber (301). The driven gear (333) is coaxially installed at the end of the rotating shaft (332) inserted into the regulation chamber (301); The two filtration rotating plates (3) divide the interior of the cylindrical water tank (201) into a sewage collection area and a purified water area. The biological treatment tank (4) is only communicated with the purified water area, and the sedimentation tank (1) is only communicated with the sewage collection area; A driving rack (35) is vertically installed in the regulation chamber (301). The driving rack (35) can move vertically in the regulation chamber (301). The driving rack (35) meshes with the driven gear (333). A support spring (36) is installed at the lower end of the driving rack (35), and the lower end of the support spring (36) is connected to the bottom plate of the regulation chamber (301); A permanent magnet block (37) is arranged on the driving rack (35), and an electromagnet (8) is arranged in the sewage collection area, which can change the vertical position of the permanent magnet block (37) after generating magnetic force.

2. A biological sewage ecological pond purification and filtration system according to claim 1, characterized in that: A water supply pipe (343) is vertically installed in the control chamber (301), and the flushing pipe (34) is inserted into the control chamber (301) and communicated with the water supply pipe (343).

3. A biological sewage ecological pond purification and filtration system according to claim 2, characterized in that: A liquid-passing valve (344) connected to the outside of the control chamber (301) is installed at the lower end of the water supply main pipe (343), and the liquid-passing valve (344) can be connected to the water injection pump group (9).

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