Biological filter sewage treatment device

Abstract

The invention relates to a sewage treatment device of a biological filter, relates to the technical field of sewage treatment, and aims to solve the problem that solid impurities are generated due to the fact that biological membranes fall off, fillers are abraded and the like in the treatment process of the biological filter, the sewage treatment device of the biological filter comprises the biological filter and a filter tank, the bottom of the biological filter is communicated with a water collecting tank, and a water distribution assembly is arranged in the biological filter and is used for uniformly providing sewage into the biological filter; the filtering tank is communicated with the water collecting tank, a plurality of vertically arranged water outlet pipes are arranged in the filtering tank, a filtering assembly is arranged in the filtering tank and comprises a filtering pipe arranged outside the water outlet pipes in a sleeving mode, a plurality of filtering holes are formed in the filtering pipe, a layer of filtering cloth is attached to the outer portion of the filtering tank, and a booster pump used for pressurizing the interior of the filtering tank is arranged on the water outlet pipes; a discharge port is formed in the bottom of the filtering tank. The sewage treatment device has the effect of improving sewage purification.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a biological filter sewage treatment device. Background Art

[0002] The biofilter decomposes and transforms organic matter in sewage through microorganisms on the biofilm, thereby achieving the purpose of purifying water quality. However, the treatment effect of the biofilter is affected by many factors, such as influent water quality, microbial species and quantity, environmental conditions, etc.

[0003] Although the biofilter can effectively remove most organic matter, nitrogen, phosphorus and other pollutants in sewage, some difficult-to-degrade organic matter, inorganic matter, heavy metals, etc. may still remain in the treated sewage during the treatment process. In addition, the biofilter may also produce some solid impurities caused by the shedding of biofilm and the wear of fillers during the treatment process. Summary of the invention

[0004] In order to further improve the purification effect of sewage, the present application provides a biological filter sewage treatment device.

[0005] The present application provides a biological filter sewage treatment device adopts the following technical solution: A biological filter sewage treatment device, comprising: A biological filter tank, wherein evenly distributed filter material is arranged in the biological filter tank, a water collecting tank is connected to the bottom of the biological filter tank, and a water distribution component is arranged in the biological filter tank, wherein the water distribution component is used to evenly provide sewage in the biological filter tank; A filter tank, wherein the filter tank is connected to a water collection tank, wherein a plurality of vertically arranged water outlet pipes are arranged in the filter tank, wherein a filter assembly is arranged in the filter tank, wherein the filter assembly comprises a filter tube sleeved outside the water outlet pipe, wherein a plurality of filter holes are arranged on the filter tube, wherein a layer of filter cloth is attached to the outside of the filter tank, wherein a booster pump for pressurizing the inside of the filter tank is arranged on the water outlet pipe, and a discharge port is arranged at the bottom of the filter tank.

[0006] By adopting the above technical scheme, the filter material can form a biofilm in the biological filter tank, and calmly convert the organic matter in the sewage into harmless substances through metabolism. The purified sewage is transported to the filter tank through the sump. The sewage in the filter tank flows toward the water inlet pipe due to pressure. The filter cloth and the filter tube can intercept the solid impurities in the sewage, and the solid matter adheres to the filter cloth to form a solid film. The booster pump adsorbs the outlet pipe, so that the solid matter is compressed, and the moisture in the solid matter flows into the outlet pipe. The solid matter is squeezed to form a filter cake that wraps the filter cloth, the discharge port is opened, and the booster pump pressurizes the outlet pipe, thereby breaking the filter cake outside the filter cloth and discharging it from the discharge port, thereby filtering the solid matter in the sewage.

[0007] Preferably, a spray assembly is provided in the filter tank, and the spray assembly comprises a spray pipe provided in the filter tank, and a plurality of spray holes are provided at the bottom of the spray pipe.

[0008] By adopting the above technical solution, after the filter tank filters the sewage, the residue in the sewage will adhere to the inner wall of the filter tank and the filter cloth, and the clean water in the spray pipe will flow toward the inner cavity of the filter tank through the spray hole, thereby cleaning the residue attached to the inner wall of the filter tank and the filter cloth, and discharging it from the discharge port, thereby keeping the filter tank body clean.

[0009] Preferably, the spray pipe disc is arranged in the filter tank.

[0010] By adopting the above technical solution, since a number of water outlet pipes are arranged in the filter tank, it is easy for the spray pipe to leak the filter cloth on the outer wall of the water outlet pipe when spraying. The spray pipe coil is arranged in the filter tank, which can increase the spraying area and reduce the possibility of leakage to the water outlet pipe.

[0011] Preferably, the water distribution assembly comprises a water inlet pipe evenly arranged above the biofilter, and the water inlet pipe is provided with a plurality of drainage holes along the length direction.

[0012] By adopting the above technical solution, sewage can be evenly discharged into the biofilter through the drainage holes, reducing the concentrated discharge of sewage into the biofilter, which causes the microorganisms in some areas to become less active or die due to excessive load, while other areas may not be able to fully function due to insufficient load. At the same time, uneven water inflow may cause the fillers in some areas to be quickly clogged, affecting the flow of sewage and the renewal of the biofilm, which may lead to a decrease in treatment efficiency and even the need to shut down for cleaning.

[0013] Preferably, a fixing bracket is fixedly connected to the wall of the biological filter tank, and the water inlet pipe is detachably connected to the bottom of the fixing bracket.

[0014] By adopting the above technical solution, the fixed bracket supports and fixes the water inlet pipe, thereby meeting the purpose of uniform sewage discharge.

[0015] Preferably, the water distribution assembly further comprises a stirring member rotatably disposed in the biofilter tank, wherein the stirring member comprises a plurality of stirring rods whose ends are fixed at one point, and the plurality of stirring rods form a circle.

[0016] By adopting the above technical solution, the stirring element rotates in the biological filter tank. On the one hand, it can drive the suspended matter in the tank to be evenly distributed, prevent the suspended matter from being deposited on the bottom of the tank or a certain part, thereby maintaining uniform contact between the microorganisms and the sewage and enhancing the treatment effect; on the other hand, it can increase the water flow speed and turbulence in the tank, thereby increasing the contact area between water and air, promoting the dissolution and supply of oxygen, thereby maintaining the normal metabolism and activity of the microorganisms.

[0017] Preferably, the fixed frame is provided with a driving source for driving the stirring member to rotate in the biofilter.

[0018] Preferably, a driving end of the driving source is fixedly connected to a rotating rod, and an end of the rotating rod away from the driving source is connected to ends of a plurality of stirring rods.

[0019] By adopting the above technical solution, the driving source drives the rotating rod to rotate, thereby driving a plurality of stirring rods to rotate in the biological filter tank, driving the sewage to flow in the biological filter tank.

[0020] Preferably, the filter material is ceramsite.

[0021] By adopting the above technical solution, ceramsite can provide a surface attachment environment and growth environment for microorganisms so that they can attach to the filter material and form a biofilm, and then convert the organic matter in the wastewater into harmless substances through metabolism.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: The filter material can form a biofilm in the biological filter tank, and calmly convert the organic matter in the sewage into harmless substances through metabolism. The purified sewage is transported to the filter tank through the sump. The sewage in the filter tank flows toward the water inlet pipe due to pressure. The filter cloth and filter tube can intercept the solid impurities in the sewage, and the solid matter adheres to the filter cloth to form a solid film. The booster pump adsorbs the outlet pipe, so that the solid matter is compressed, and the water in the solid matter flows into the outlet pipe. The solid matter is squeezed to form a filter cake that wraps the filter cloth. The discharge port is opened, and the booster pump pressurizes the outlet pipe, so that the filter cake outside the filter cloth is broken and discharged from the discharge port, thereby filtering the solid matter in the sewage; After the filter tank filters the sewage, the residue in the sewage will adhere to the inner wall of the filter tank and the filter cloth. The clean water in the spray pipe will flow out toward the inner cavity of the filter tank through the spray hole, thereby cleaning the residue attached to the inner wall of the filter tank and the filter cloth, and discharging it from the discharge port, thereby keeping the filter tank body clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the cross-sectional structure of the biofilter tank in the embodiment of the present application; Figure 3 It is a schematic diagram of the cross-sectional structure of the filter tank in the embodiment of the present application; Figure 4 It is a schematic diagram of the enlarged structure of the spray assembly shown in the embodiment of the present application.

[0024] Explanation of the reference numerals: 1. biological filter tank; 11. filter material; 12. water collecting tank; 13. water pipe; 14. water permeable hole; 2. filter tank; 21. outlet pipe; 22. collecting pipe; 23. water supply pipe; 24. clear liquid tank; 25. booster pump; 26. discharge port; 3. water distribution assembly; 31. fixed bracket; 32. clamp; 33. water inlet pipe; 34. drain hole; 35. driving source; 36. rotating rod; 37. stirring rod; 4. filter assembly; 41. filter tube; 42. filter hole; 43. filter cloth; 5. spray assembly; 51. spray pipe; 52. spray hole. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The embodiment of the present application discloses a biological filter sewage treatment device.

[0027] A biological filter sewage treatment device, referring to Figure 1 and Figure 2 , including a biological filter 1 and a filter tank 2. The biological filter 1 is uniformly filled with filter material 11. In this embodiment, the filter material 11 is ceramsite. In other embodiments, the filter material 11 is a plastic material such as polyethylene, polypropylene, and polytetrafluoroethylene. The filter material 11 can provide a surface attachment environment and a growth environment for microorganisms so that they can attach to the filter material 11 and form a biofilm, and then convert the organic matter in the wastewater into harmless substances through metabolism. A water collection tank 12 is provided at the bottom of the biological filter 1. The wall of the water collection tank 12 is connected to a water pipe 13. The end of the water pipe 13 away from the water collection tank 12 is connected to the filter tank 2. A plurality of water permeable holes 14 are provided at the bottom of the biological filter 1. The purified sewage flows into the water collection tank 12 through the water permeable holes 14, and flows into the filter tank 2 through the water pipe 13.

[0028] Reference Figure 1 and Figure 2 A water distribution assembly 3 is provided in the biofilter 1. The water distribution assembly 3 includes a fixed bracket 31 provided above the biofilter 1. The ends of the fixed bracket 31 are fixed on the wall of the biofilter 1. The fixed bracket 31 is provided with a plurality of clamps 32. A water inlet pipe 33 is clamped in the clamp 32. A plurality of drainage holes 34 are provided on the water pipe. A driving source 35 is fixedly connected to the fixed bracket 31. The driving source 35 is a motor. A rotating rod 36 is fixedly connected to the output end of the driving source 35. One end of the rotating rod 36 inserted into the biofilter 1 is fixedly connected to a stirring member. The stirring member includes a plurality of stirring rods 37. The plurality of stirring rods 37 are evenly distributed around the rotating rod 36 and are fixedly connected to the end of the rotating rod 36.

[0029] The water inlet pipe 33 is arranged on the fixed support 31, and the sewage can be evenly discharged into the biofilter 1 through a number of drainage holes 34, which reduces the possibility that the microorganisms in some areas are reduced in activity or die due to excessive load caused by the concentrated discharge of sewage into the biofilter 1, while other areas may not be able to fully function due to insufficient load. At the same time, uneven water inflow may cause the fillers in some areas to be quickly blocked, affecting the flow of sewage and the renewal of biofilm, which may lead to a decrease in treatment efficiency and even require shutdown for cleaning. The stirring rod 37 rotates in the biofilter 1. On the one hand, it can drive the suspended matter in the pool to be evenly distributed, prevent the suspended matter from being deposited on the bottom of the pool or a certain part, thereby maintaining uniform contact between the microorganisms and the sewage and enhancing the treatment effect; on the other hand, it can increase the water flow speed and turbulence in the pool, thereby increasing the contact area between water and air, promoting the dissolution and supply of oxygen, and maintaining the normal metabolism and activity of the microorganisms.

[0030] Reference Figure 1 and Figure 3 There are several vertically arranged water outlet pipes 21 in the filter tank 2, and the several water outlet pipes 21 are evenly distributed in the filter tank 2. Several collecting pipes 22 arranged in parallel with each other are inserted in the filter tank 2. The ends of the several water outlet pipes 21 are respectively connected with the corresponding collecting pipes 22. One end of the several collecting pipes 22 passing through the filter tank 2 is connected with the same water supply pipe 23, and one end of the water supply pipe 23 is connected with a clear liquid tank 24. A booster pump 25 is arranged on the several collecting pipes 22, and a discharge port 26 is opened at the bottom of the filter tank 2.

[0031] Reference Figure 3 A filter assembly 4 is arranged in the filter tank 2, and the filter assembly 4 includes a filter tube 41 vertically fixedly connected to the collecting pipe 22, and a plurality of filter holes 42 are opened on the outer wall of the filter tube 41. The filter tube 41 is sleeved on the outside of the water outlet pipe 21, and the bottom of the water outlet pipe 21 is connected to the inner cavity of the filter tube 41. The outside of the filter tube 41 is wrapped with a layer of filter cloth 43.

[0032] The booster pump 25 first extracts the gas in the filter tank 2, and flows the sewage filtered by the biological filter tank 1 into the filter tank 2 through the water pipe 13. The sewage in the filter tank 2 is filtered by the filter cloth 43 and the filter holes 42 in turn, and the filtered clean water flows from the outlet pipe 21 into the manifold 22, and is sent to the clean liquid tank 24 through the water pipe 23. Due to the influence of the pressure difference, the sewage in the filter tank 2 will flow into the filter pipe 41, and the filter cloth 43 can block the sundries in the sewage, thereby filtering the sewage, and the filter holes 42 can perform secondary filtration on the sewage, reducing the situation where larger particles enter the filter pipe 41 and block the outlet pipe 21. As the water level in the filter tank 2 drops, the mud in the sewage will adhere to the outer wall of the filter cloth 43, forming a solid film that wraps and blocks the filter cloth 43. At this time, the water pipe 13 is opened to allow the sewage to flow back into the sump 12, and then the booster pump 25 is used to increase the pressure in the outlet pipe 21. The pressure can blow off the solid film attached to the filter cloth 43, which falls to the bottom of the filter tank 2 and is discharged from the discharge port 26.

[0033] Reference Figure 4 A spray assembly 5 is provided in the filter tank 2. The spray assembly 5 includes a spray pipe 51 disposed in the filter tank 2. A plurality of spray holes 52 are provided at the bottom of the spray pipe 51. One end of the spray pipe 51 passes through the filter tank 2 for connection with a water source. After the filter tank 2 filters the sewage, impurities in the sewage will adhere to the inner wall of the filter tank 2 and the filter cloth 43. The filter tank 2 is sprayed through the spray holes 52, thereby cleaning the inside of the filter tank 2.

[0034] The implementation principle of the biological filter tank sewage treatment device of the embodiment of the present application is as follows: the sewage is evenly distributed in the biological filter tank 1 through the drainage holes 34, the driving source 35 drives the stirring rod 37 to stir in the biological filter tank 1, and the sewage passes through the water-permeable holes 14 and flows into the water collection tank 12 after the filtration of the filter material 11, and flows into the filter tank 2 through the water delivery pipe 13. The sewage in the filter tank 2 passes through the filtration of the filter cloth 43 and the filter holes 42 in turn, and the filtered clean water flows from the outlet pipe 21 into the collecting pipe 22, and is delivered to the clear liquid tank 24 through the water delivery pipe 23. When the sewage passes through the filter cloth 43, a layer of solid residue film is formed on the filter cloth 43, the water delivery pipe 13 is opened to allow the sewage to flow back into the water collection tank 12, and then the booster pump 25 is used to increase the pressure in the outlet pipe 21, and the pressure can blow off the solid film attached to the filter cloth 43, so that it falls to the bottom of the filter tank 2 and is discharged from the discharge port 26. Then, the spray hole 52 is used to spray the inside of the filter tank 2, thereby cleaning the inside of the filter tank 2.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A biological filter sewage treatment device, characterized in that: include: A biological filter (1), wherein evenly distributed filter material (11) is arranged in the biological filter (1), the bottom of the biological filter (1) is connected to a water collection tank (12), and a water distribution component (3) is arranged in the biological filter (1), and the water distribution component (3) is used to evenly provide sewage in the biological filter (1); A filter tank (2), the filter tank (2) being connected to a water collecting tank (12), the filter tank (2) having a plurality of vertically arranged water outlet pipes (21), the filter tank (2) having a filter assembly (4), the filter assembly (4) comprising a filter tube (41) sleeved outside the water outlet pipe (21), the filter tube (41) having a plurality of filter holes (42), a layer of filter cloth (43) being attached to the outside of the filter tank (2), the water outlet pipe (21) having a booster pump (25) for pressurizing the inside of the filter tank (2), and a discharge port (26) being provided at the bottom of the filter tank (2).

2. A biological filter sewage treatment device according to claim 1, characterized in that: A spray assembly (5) is arranged in the filter tank (2), and the spray assembly (5) comprises a spray pipe (51) arranged in the filter tank (2), and a plurality of spray holes (52) are formed at the bottom of the spray pipe (51).

3. A biological filter sewage treatment device according to claim 2, characterized in that: The spray pipe (51) is disposed in the filter tank (2).

4. A biological filter sewage treatment device according to claim 1, characterized in that: The water distribution assembly (3) comprises a water inlet pipe (33) uniformly arranged above the biological filter tank (1), wherein the water inlet pipe (33) is provided with a plurality of drainage holes (34) along the length direction.

5. A biological filter sewage treatment device according to claim 4, characterized in that: A fixing bracket (31) is fixedly connected to the wall of the biological filter tank (1), and the water inlet pipe (33) is detachably connected to the bottom of the fixing bracket (31).

6. A biological filter sewage treatment device according to claim 5, characterized in that: The water distribution assembly (3) further comprises a stirring member rotatably arranged in the biofilter (1), the stirring member comprising a plurality of stirring rods (37) whose ends are fixed at one point, the plurality of stirring rods (37) forming a circle.

7. A biological filter sewage treatment device according to claim 6, characterized in that: The fixed support (31) is provided with a driving source (35) for driving the stirring element to rotate in the biofilter (1).

8. A biological filter sewage treatment device according to claim 7, characterized in that: The driving end of the driving source (35) is fixedly connected to a rotating rod (36), and one end of the rotating rod (36) away from the driving source (35) is connected to the ends of a plurality of stirring rods (37).

9. The biological filter sewage treatment device according to claim 1, characterized in that: The filter material (11) is ceramsite.

Images