Non-negative pressure biological aeration filter

Abstract

The utility model relates to the technical field of biological aeration filter tanks, in particular to a non-negative pressure biological aeration filter tank, which is characterized in that sewage enters a tank body through a flow guide component and enters a biological filter material layer from the bottom of the tank body, the biological filter material layer purifies the sewage, and meanwhile, an aeration component aerates the biological filter material layer and supplies oxygen to the inside of the tank body; during backwashing, the flow guide assembly is closed, sewage adding and drainage are stopped, a pushing component is started, the pushing component pushes a moving rod to move back and forth in a connecting sleeve, the moving rod drives a connecting block to move, and then the connecting block drives the pushing rod to move; the push rod turns over the biological filter material layer and water flow back and forth, a biological membrane on the biological filter material layer falls off after turning over for a period of time, then the flow guide assembly is opened, clear water is added into the tank body, the biological filter material layer is washed, and sewage is discharged through the flow guide assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of biological aeration filter tanks, in particular to a biological aeration filter tank without negative pressure. Background Art

[0002] The aerated biological filter, referred to as BAF, is a new type of biofilm wastewater treatment process developed in Europe and the United States in the late 1980s. It was greatly developed in the early 1990s, with the largest scale reaching hundreds of thousands of tons per day, and it has been developed to remove nitrogen and phosphorus.

[0003] The aerated biological filter integrates biological oxidation and interception of suspended solids, saving the subsequent sedimentation tank (secondary sedimentation tank). It has the characteristics of large volumetric load and hydraulic load, short hydraulic retention time, less infrastructure investment, good effluent quality, low operating energy consumption and low operating costs.

[0004] However, since the aerated biological filter needs clean water to backwash the filter material layer after long-term use, the existing biological aeration tank requires a large amount of clean water for backwashing, and cannot be effectively backwashed. The backwashing efficiency is low, which greatly wastes clean water resources. Utility Model Content

[0005] The utility model aims to provide a non-negative pressure biological aeration filter tank, which solves the problem that effective backwashing cannot be performed.

[0006] To achieve the above-mentioned purpose, the utility model provides a non-negative pressure biological aeration filter tank including a tank body, an installation component and a guide component, the installation component including a supporting layer, a connecting sleeve, a moving rod, a connecting block, a pushing rod, a biological filter material layer, a driving component and an aeration component, the supporting layer is fixedly connected to the tank body and is located inside the tank body, the connecting sleeve is fixedly connected to the tank body and is located on one side of the tank body, the moving rod is slidably connected to the connecting sleeve and is located on the inner side of the connecting sleeve, the connecting block is fixedly connected to the moving rod and is sleeved on the moving rod, the pushing rod is fixedly connected to the connecting block and is located on one side of the connecting block, the biological filter material layer is arranged on the supporting layer, the driving component is connected to the tank body, the aeration component is connected to the tank body, the sewage enters the tank body through the guide component, and the sewage flows from the tank body The bottom enters the biological filter material layer, and the biological filter material layer purifies the sewage. At the same time, the aeration component aerates the biological filter material layer and supplies oxygen to the inside of the tank body to improve the purification effect of the sewage. The purified water is discharged through the diversion component. When backwashing, the diversion component is closed, and the addition of sewage and drainage are stopped. When the pushing component is started, the pushing component pushes the moving rod to move back and forth in the connecting sleeve, and the moving rod drives the connecting block to move, and the connecting block drives the pushing rod to move. The pushing rod flips the biological filter material layer and the water flow back and forth. After a period of flipping, the biofilm on the biological filter material layer falls off. When the diversion component is opened, clean water is added to the tank body to flush the biological filter material layer, and the sewage is discharged through the diversion component, thereby solving the problem of inability to perform effective backwashing.

[0007] Wherein, the driving component includes a first driving cylinder and a second driving cylinder, the first driving cylinder is fixedly connected to the pool body, and the output end of the first driving cylinder passes through the pool body and is connected to the moving rod; the second driving cylinder is fixedly connected to the pool body, and the output end of the second driving cylinder passes through the pool body and is connected to the moving rod.

[0008] Wherein, the aeration component includes an aeration pipe and a nozzle, the aeration pipe is fixedly connected to the pool body and passes through the pool body; the nozzle is communicated with the aeration pipe and is located on one side of the aeration pipe.

[0009] Wherein, the diversion assembly includes a water inlet pipe, a backwash pipe, a backwash air inlet pipe and a water outlet component, the water inlet pipe is connected to the pool body and is located on one side of the pool body; the backwash pipe is connected to the pool body and is located on one side of the pool body; the backwash air inlet pipe is fixedly connected to the pool body and is located on one side of the pool body; the water outlet component is connected to the pool body.

[0010] Wherein, the water outlet component includes a normal water outlet pipe and a backwash water outlet pipe, the normal water outlet pipe is connected to the pool body and is located at one side of the pool body; the backwash water outlet pipe is connected to the pool body and is located at one side of the pool body.

[0011] The utility model discloses a non-negative pressure biological aeration filter tank, comprising a tank body, an installation component and a guide component, wherein the installation component comprises a supporting layer, a connecting sleeve, a moving rod, a connecting block, a pushing rod, a biological filter material layer, a driving component and an aeration component, wherein the driving component comprises a first driving cylinder and a second driving cylinder, wherein the aeration component comprises an aeration pipe and a nozzle, wherein the guiding component comprises an inlet pipe, a backwashing pipe, a backwashing air inlet pipe and a water outlet component, wherein the water outlet component comprises a normal water outlet pipe and a backwashing water outlet pipe, wherein the supporting layer is fixedly connected to the tank body and is located inside the tank body, wherein the connecting sleeve is fixedly connected to the tank body and is located on one side of the tank body, wherein the moving rod is slidably connected to the connecting sleeve and is located on the inner side of the connecting sleeve, wherein the connecting block is fixedly connected to the moving rod and is sleeved on the moving rod, wherein the pushing rod is fixedly connected to the connecting block and is located on one side of the connecting block, wherein the biological filter material layer is arranged on the supporting layer, wherein the driving component is connected to the tank body, wherein The aeration component is connected to the tank body, and sewage enters the tank body through the diversion component, and the sewage enters the biological filter material layer from the bottom of the tank body. The biological filter material layer purifies the sewage. At the same time, the aeration component aerates the biological filter material layer and supplies oxygen to the inside of the tank body to improve the purification effect of the sewage. The purified water is discharged through the diversion component. When backwashing, the diversion component is closed, and the addition of sewage and drainage are stopped. When the pushing component is started, the pushing component pushes the moving rod to move back and forth in the connecting sleeve, and the moving rod drives the connecting block to move, and the connecting block drives the pushing rod to move. The pushing rod flips the biological filter material layer and the water flow back and forth, and the biofilm on the biological filter material layer falls off after a period of flipping. When the diversion component is opened, clean water is added to the tank body to flush the biological filter material layer, and the sewage is discharged through the diversion component, thereby solving the problem of inability to perform effective backwashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of the non-negative pressure biological aeration filter tank in the first embodiment of the utility model.

[0014] Figure 2It is a schematic diagram of the connection between the moving rod and the connecting sleeve of the non-negative pressure biological aeration filter in the first embodiment of the utility model.

[0015] Figure 3 It is a schematic diagram of a negative pressure biological aeration filter tank according to the second embodiment of the utility model.

[0016] In the figure: 101-tank body, 102-supporting layer, 103-connecting sleeve, 104-moving rod, 105-connecting block, 106-pushing rod, 107-biological filter material layer, 108-first driving cylinder, 109-second driving cylinder, 110-aeration pipe, 111-sprinkler, 201-water inlet pipe, 202-backwashing pipe, 203-backwashing air inlet pipe, 204-normal water outlet pipe, 205-backwashing water outlet pipe. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] The first embodiment of the present application is:

[0019] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the non-negative pressure biological aeration filter tank of the first embodiment of the utility model. Figure 2 It is a schematic diagram of the connection between the moving rod and the connecting sleeve of the non-negative pressure biological aeration filter in the first embodiment of the utility model. The non-negative pressure biological aeration filter includes a tank body 101, a mounting assembly and a guide assembly. The mounting assembly includes a supporting layer 102, a connecting sleeve 103, a moving rod 104, a connecting block 105, a pushing rod 106, a biological filter material layer 107, a driving component and an aeration component. The driving component includes a first driving cylinder 108 and a second driving cylinder 109. The aeration component includes an aeration pipe 110 and a nozzle 111. The above-mentioned solution solves the problem of being unable to perform effective backwashing.

[0020] According to this specific embodiment, sewage enters the tank body 101 through the guide component, and the sewage enters the biological filter material layer 107 from the bottom of the tank body 101. The biological filter material layer 107 purifies the sewage. At the same time, the aeration component aerates the biological filter material layer 107 to supply oxygen to the inside of the tank body 101 to improve the sewage purification effect. The purified water is discharged through the guide component. When backwashing, the guide component is closed, the addition of sewage and drainage are stopped, and the pushing component is started, and the pushing component pushes the moving rod 104 moves back and forth in the connecting sleeve 103, the moving rod 104 drives the connecting block 105 to move, and the connecting block 105 drives the pushing rod 106 to move, and the pushing rod 106 flips the biological filter material layer 107 and the water flow back and forth, and the biofilm on the biological filter material layer 107 falls off after a period of flipping, and then the diversion component is opened to allow clean water to be added to the pool body 101 to flush the biological filter material layer 107, and the sewage is discharged through the diversion component, thereby solving the problem of inability to perform effective backwashing.

[0021] The supporting layer 102 is fixedly connected to the pool body 101 and is located inside the pool body 101. The connecting sleeve 103 is fixedly connected to the pool body 101 and is located on one side of the pool body 101. The moving rod 104 is slidably connected to the connecting sleeve 103 and is located on the inner side of the connecting sleeve 103. The connecting block 105 is fixedly connected to the moving rod 104 and is sleeved on the moving rod 104. The pushing rod 106 is fixedly connected to the connecting block 105 and is located on one side of the connecting block 105. The biological filter material layer 107 is arranged on the supporting layer 102, the driving member is connected to the tank body 101, the aeration member is connected to the tank body 101, the supporting layer 102 is located inside the tank body 101, the connecting sleeve 103 is located inside the tank body 101, both ends of the moving rod 104 are slidably connected to the connecting sleeve 103, the connecting block 105 is sleeved on the moving rod 104, the pushing rod 106 is located on both sides of the connecting block 105, and the biological filter material layer 107 is located on the supporting layer 102. The sewage enters the tank body 101 through the guide component, and the sewage enters the biological filter material layer 107 from the bottom of the tank body 101. The biological filter material layer 107 purifies the sewage. At the same time, the aeration component aerates the biological filter material layer 107 to supply oxygen to the inside of the tank body 101 to improve the sewage purification effect. The purified water is discharged through the guide component. When backwashing is performed, the guide component is closed, the addition of sewage and drainage are stopped, and the pushing component is started. The pushing component pushes the moving rod 104 in The connecting sleeve 103 moves back and forth, the moving rod 104 drives the connecting block 105 to move, and the connecting block 105 drives the pushing rod 106 to move, and the pushing rod 106 flips the biological filter material layer 107 and the water flow back and forth, and the biofilm on the biological filter material layer 107 falls off after a period of flipping, and then the diversion component is opened to allow clean water to be added to the pool body 101 to flush the biological filter material layer 107, and the sewage is discharged through the diversion component, thereby solving the problem of inability to perform effective backwashing.

[0022] Secondly, the first driving cylinder 108 is fixedly connected to the pool body 101, and the output end of the first driving cylinder 108 passes through the pool body 101 and is connected to the moving rod 104; the second driving cylinder 109 is fixedly connected to the pool body 101, and the output end of the second driving cylinder 109 passes through the pool body 101 and is connected to the moving rod 104. The first driving cylinder 108 and the second driving cylinder 109 are located on both sides of the pool body 101. When the first driving cylinder 108 and the second driving cylinder 109 are started, the first driving cylinder 108 pushes the moving rod 104 to move, and when the first cylinder pushes the moving rod 104, the second cylinder pulls the moving rod 104 to move, and when the first driving cylinder 108 is reset, it pulls the moving rod 104 to move, and the second driving cylinder 109 pushes the moving rod 104 to move.

[0023] Then, the aeration pipe 110 is fixedly connected to the pool body 101 and passes through the pool body 101; the nozzle 111 is communicated with the aeration pipe 110 and is located on one side of the aeration pipe 110, the aeration pipe 110 passes through the pool body 101, and the nozzle 111 is located above the aeration pipe 110, and the gas is dispersed into each of the nozzles 111 through the aeration pipe 110, and the gas is sprayed out through the nozzles 111 to aerate the biological filter material layer 107.

[0024] When the non-negative pressure biological aeration filter of the present embodiment is used, sewage enters the tank body 101 through the guide assembly, and sewage enters the biological filter material layer 107 from the bottom of the tank body 101. The biological filter material layer 107 purifies the sewage. At the same time, gas is dispersed to each of the nozzles 111 through the aeration pipe 110, and the gas is sprayed out through the nozzles 111 to aerate the biological filter material layer 107 and supply oxygen to the inside of the tank body 101, thereby improving the sewage purification effect. The purified water is discharged through the guide assembly. When backwashing is performed, the guide assembly is closed, the addition of sewage and drainage are stopped, and the first driving cylinder 108 and the second driving cylinder 108 are started. The driving cylinder 109, the first driving cylinder 108 and the second driving cylinder 109 drive the moving rod 104 to move back and forth in the connecting sleeve 103, the moving rod 104 drives the connecting block 105 to move, and the connecting block 105 drives the pushing rod 106 to move, and the pushing rod 106 flips the biological filter material layer 107 and the water flow back and forth, and the biofilm on the biological filter material layer 107 falls off after a period of flipping, and then the diversion component is opened to allow clean water to be added to the pool body 101 to flush the biological filter material layer 107, and the sewage is discharged through the diversion component, thereby solving the problem of inability to perform effective backwashing.

[0025] The second embodiment of the present application is:

[0026] See also Figure 3 , Figure 3 It is a schematic diagram of the non-negative pressure biological aeration filter of the second embodiment of the utility model. On the basis of the first embodiment, the non-negative pressure biological aeration filter of this embodiment also includes a guide assembly, which includes an inlet pipe 201, a backwash pipe 202, a backwash inlet pipe 203 and a water outlet component, and the water outlet component includes a normal outlet pipe 204 and a backwash outlet pipe 205.

[0027] According to the present specific embodiment, sewage enters the tank body 101 through the water inlet pipe 201, and the sewage enters the biological filter material layer 107 from the bottom of the tank body 101. The biological filter material layer 107 purifies the sewage. At the same time, the gas is dispersed to each of the nozzles 111 through the aeration pipe 110, and the gas is sprayed out through the nozzles 111 to aerate the biological filter material layer 107, and oxygen is supplied to the inside of the tank body 101 to improve the sewage purification effect. The purified water is discharged through the water outlet component. When backwashing is performed, the water inlet pipe 201 and the water outlet component are closed, and the addition of sewage and drainage are stopped. When the first driving cylinder 108 and the second driving cylinder 109 are started, the first driving cylinder 10 8 and the second driving cylinder 109 drive the moving rod 104 to move back and forth in the connecting sleeve 103, the moving rod 104 drives the connecting block 105 to move, and the connecting block 105 drives the pushing rod 106 to move, and the pushing rod 106 flips the biological filter material layer 107 and the water flow back and forth, and at the same time opens the backwashing air inlet pipe 203, and the gas enters the tank body 101 to accelerate the flipping of the sewage. After a period of flipping, the biofilm on the biological filter material layer 107 falls off, and then opens the backwashing pipe 202 to allow clean water to be added to the tank body 101 to flush the biological filter material layer 107, and the sewage is discharged through the water outlet component, thereby solving the problem of inability to perform effective backwashing.

[0028] Among them, the water inlet pipe 201 is connected with the pool body 101 and is located on one side of the pool body 101; the backwash pipe 202 is connected with the pool body 101 and is located on one side of the pool body 101; the backwash air inlet pipe 203 is fixedly connected with the pool body 101 and is located on one side of the pool body 101; the water outlet component is connected with the pool body 101, the water inlet pipe 201 is located on one side of the pool body 101, the backwash pipe 202 is located on the side of the pool body 101 close to the water inlet pipe 201, and the backwash air inlet pipe is located on the side of the pool body 101 away from the backwash pipe 202. The sewage enters the pool body 101 through the water inlet pipe 201, and the clean water enters the pool body 101 through the backwash pipe 202. The backwash air inlet pipe 203 is opened, and the gas enters the pool body 101 to accelerate the tumbling of the sewage.

[0029] Secondly, the normal outlet pipe 204 is connected to the tank body 101 and is located on one side of the tank body 101; the backwash outlet pipe 205 is connected to the tank body 101 and is located on one side of the tank body 101. The normal outlet pipe 204 is located on one side of the tank body 101, and the backwash outlet pipe 205 is located on one side of the tank body 101 close to the normal outlet pipe 204. The purified water is discharged through the normal outlet pipe 204, and the backwash sewage is discharged through the backwash outlet pipe 205.

[0030] When the non-negative pressure biological aeration filter of the present embodiment is used, sewage enters the tank body 101 through the water inlet pipe 201, and the sewage enters the biological filter material layer 107 from the bottom of the tank body 101. The biological filter material layer 107 purifies the sewage. At the same time, the gas is dispersed into each of the nozzles 111 through the aeration pipe 110, and the gas is sprayed out through the nozzles 111 to aerate the biological filter material layer 107 and supply oxygen to the inside of the tank body 101 to improve the sewage purification effect. The purified water is discharged through the normal water outlet pipe 204. When backwashing is performed, the water inlet pipe 201 and the normal water outlet pipe 204 are closed, and the addition of sewage and drainage are stopped. When the first driving cylinder 108 and the second driving cylinder 109 are started, the first driving cylinder 108 and the second driving cylinder 109 are started. The cylinder 108 and the second driving cylinder 109 drive the moving rod 104 to move back and forth in the connecting sleeve 103, and the moving rod 104 drives the connecting block 105 to move, and the connecting block 105 drives the pushing rod 106 to move, and the pushing rod 106 flips the biological filter material layer 107 and the water flow back and forth, and at the same time, the backwashing air inlet pipe 203 is opened, and the gas enters the tank body 101 to accelerate the flipping of the sewage. After a period of flipping, the biofilm on the biological filter material layer 107 falls off, and then the backwashing pipe 202 is opened to allow clean water to be added to the tank body 101 to flush the biological filter material layer 107. The backwashing sewage is discharged through the backwashing outlet pipe 205, thereby solving the problem of inability to perform effective backwashing.

[0031] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A non-negative pressure biological aeration filter, comprising a tank body and a flow guide assembly, characterized in that: Also included are mounting components; The installation assembly includes a supporting layer, a connecting sleeve, a moving rod, a connecting block, a pushing rod, a biological filter material layer, a driving component and an aeration component. The supporting layer is fixedly connected to the pool body and is located inside the pool body. The connecting sleeve is fixedly connected to the pool body and is located on one side of the pool body. The moving rod is slidably connected to the connecting sleeve and is located on the inner side of the connecting sleeve. The connecting block is fixedly connected to the moving rod and is sleeved on the moving rod. The pushing rod is fixedly connected to the connecting block and is located on one side of the connecting block. The biological filter material layer is arranged on the supporting layer. The driving component is connected to the pool body. The aeration component is connected to the pool body.

2. The non-negative pressure biological aeration filter according to claim 1, characterized in that: The driving component includes a first driving cylinder and a second driving cylinder, the first driving cylinder is fixedly connected to the pool body, and the output end of the first driving cylinder passes through the pool body and is connected to the moving rod; the second driving cylinder is fixedly connected to the pool body, and the output end of the second driving cylinder passes through the pool body and is connected to the moving rod.

3. The non-negative pressure biological aeration filter according to claim 1, characterized in that: The aeration component comprises an aeration pipe and a nozzle. The aeration pipe is fixedly connected to the pool body and penetrates the pool body. The nozzle is communicated with the aeration pipe and is located at one side of the aeration pipe.

4. The non-negative pressure biological aeration filter according to claim 1, characterized in that: The flow guide assembly includes a water inlet pipe, a backwash pipe, a backwash air inlet pipe and a water outlet component. The water inlet pipe is connected to the pool body and is located on one side of the pool body; the backwash pipe is connected to the pool body and is located on one side of the pool body; the backwash air inlet pipe is fixedly connected to the pool body and is located on one side of the pool body; the water outlet component is connected to the pool body.

5. The non-negative pressure biological aeration filter as claimed in claim 4, characterized in that: The water outlet component includes a normal water outlet pipe and a backwash water outlet pipe. The normal water outlet pipe is connected to the pool body and is located at one side of the pool body; the backwash water outlet pipe is connected to the pool body and is located at one side of the pool body.

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