Low-energy-consumption biological reaction device with adjustable water quality and water quantity shaped like Chinese character'hui '

Abstract

The utility model discloses a homocentric-square-shaped low energy consumption biological reaction device with adjustable water quality and quantity, and relates to the technical field of sewage treatment, the homocentric-square-shaped low energy consumption biological reaction device comprises an equipment shell, lifting rods and a homocentric-square-shaped precipitation module, the homocentric-square-shaped precipitation module is arranged in the equipment shell, a plurality of lifting rods are uniformly distributed on the periphery of the homocentric-square-shaped precipitation module, and the lifting rods are connected with the homocentric-square-shaped precipitation module. The lifting rod penetrates through a lifting sliding block fixedly installed on the outer wall of the concentric-square-shaped precipitation module, the bottom end of the lifting rod is fixedly connected with the bottom face of the equipment shell, a top plate is installed at the top end of the lifting rod, a lead screw adjusting assembly is installed in the middle of the top plate, and an inclined pipe precipitation module is installed at the bottom end of the lead screw adjusting assembly; compared with the traditional AAO (anaerobic-anoxic-oxic) device, the AAO device disclosed by the utility model has the advantages that internal reflux and external reflux are reduced, and the effect of gas lifting is effectively utilized, so that low energy consumption is realized.

Description

Technical Field

[0001] The utility model relates to sewage treatment technology, in particular to a U-shaped low-energy consumption biological reaction device with adjustable water quality and water quantity. Background Art

[0002] At present, sewage treatment technology is mainly mature, reliable and low-cost biological treatment process, which mainly uses the different activities of microorganisms under different oxygen contents to simulate and accelerate the natural purification process of sewage in nature. Therefore, a variety of biological reaction tanks have emerged, mainly including: AAO process, oxidation ditch process and SBR process, etc. These processes use physical isolation, dynamic oxygen control or intermittent controlled aeration to domesticate and cultivate microorganisms to achieve the purpose of removing pollutants in water.

[0003] The main shortcomings of the current conventional sewage treatment process are as follows:

[0004] 1. Conventional treatment processes such as AAO pools and oxidation ditches only have the function of biochemical reaction and do not have the characteristics of solid-liquid separation. The back end needs to be coordinated with a secondary sedimentation tank or MBR membrane for solid-liquid separation. Although the SBR process has the functions of biochemical reaction and solid-liquid separation, its hydraulic retention time is more than 4 hours longer than other sewage treatment processes because it has two functions at the same time, which will result in increased land occupation and investment.

[0005] 2. The aeration volume of conventional processes is generally about 10-20 times the amount of water to be treated. If the oxygenation efficiency of the aerator and the influence of water temperature are ignored, the main factor restricting the efficiency of oxygenation is the contact time between the aerated gas and water, and the contact time is currently mainly determined by the pool depth and the relative flow field of gas and water. Because some northern sewage treatment plants have the problem of winter sewage insulation, and at the same time, the construction depth is too high and the construction is difficult.

[0006] 3. Conventional processes all need to consider preventing sludge sedimentation, so agitators (AAO, SBR) and flow promoters (oxidation ditch) are added inside the reaction tank. This part consumes a lot of power and only plays an auxiliary role in the actual biochemical reaction.

[0007] 4. In the early stage of conventional process design, it is necessary to analyze the water quality of the sewage treatment plant to determine the actual carbon-nitrogen ratio, so as to set up a suitable anoxic section for denitrification reaction and ensure the removal rate of total nitrogen.

[0008] 5. When designing conventional sewage treatment processes, the biological pollutant removal load is generally designed as a constant value. Therefore, when the pool capacity is constant, the treated water volume is approximately 80%-120% of the total designed treated water volume, and when the water volume is at its lowest or highest, the microbial load also changes accordingly. Therefore, the state of the microorganisms is unstable, and the efficiency of pollutant removal is also unstable.

[0009] 6. At present, the only adjustments that can be made to the conventional sewage treatment process in smart water services are the aeration volume and the dosage of chemicals, and the adjustment range is low, with limited energy-saving and consumption-reducing capabilities. Utility Model Content

[0010] The utility model aims to provide a U-shaped low-energy consumption biological reaction device with adjustable water quality and water quantity to solve the problems raised in the above-mentioned background technology.

[0011] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0012] A low-energy consumption biological reaction device with adjustable water quality and water quantity in a U-shape comprises an equipment shell, a lifting rod and a U-shaped sedimentation module, wherein the U-shaped sedimentation module is arranged inside the equipment shell, and a plurality of lifting rods are evenly distributed around the U-shaped sedimentation module, the lifting rods penetrate a lifting slider fixedly installed on the outer wall of the U-shaped sedimentation module, the bottom end of the lifting rod is fixedly connected to the bottom surface of the equipment shell, a top plate is installed on the top of the lifting rod, a screw adjustment assembly is installed in the middle of the top plate, an inclined tube sedimentation module is installed at the bottom end of the screw adjustment assembly, the inclined tube sedimentation module is fixed in the middle of the U-shaped sedimentation module, a mud bucket is installed at the bottom end of the inclined tube sedimentation module, a plurality of trapezoidal mud holes are evenly opened in a ring shape on the outer side wall of the inclined tube sedimentation module, an inlet pipe is installed on one side of the equipment shell, a water outlet pipe is installed on the side of the inclined tube sedimentation module, and an aeration device is arranged at the bottom of the equipment shell.

[0013] As a further solution of the utility model: the screw adjustment assembly includes a nut, a screw, a bearing and a crank, the nut is embedded in the middle of the top plate, a screw is installed in the middle of the nut, the bottom end of the screw is rotatably connected to the bearing installed on the inclined tube sedimentation module, and the top end of the screw is installed with a crank.

[0014] As a further solution of the utility model: the aeration device includes an aeration head, a connecting pipe and an air inlet pipe, the aeration heads are evenly arranged at the bottom of the equipment shell, the aeration heads are connected by connecting pipes, the connecting pipes are connected to the air inlet pipe, and the air inlet pipe is connected to an external blower.

[0015] As a further solution of the utility model: the upper cross-section of the trapezoidal mud hole is larger than the lower cross-section.

[0016] As a further solution of the utility model: the water outlet pipe passes through the return-shaped sedimentation module and the equipment shell in sequence, and the water outlet of the water outlet pipe is located outside the equipment shell, and the vertical section of the water outlet pipe is a flexible pipeline.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Compared with the traditional AAO device, the utility model reduces the internal reflux and external reflux, effectively utilizes the effect of gas lifting, and thus achieves low energy consumption.

[0019] 2. Compared with the traditional AAO device, the utility model combines the reaction sections in the device shell and stacks them vertically, which improves the space utilization and achieves low floor space.

[0020] 3. The circular sedimentation module and the inclined tube sedimentation module of the utility model can be raised and lowered with the cooperation of the lifting rod and the screw adjustment assembly, so as to better adapt to the use of sewage with different water quality or water volume, and realize the biological reaction of the device under the optimal working conditions within the range of 50%-100% of the original design water volume or pollutant concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure of a U-shaped low-energy biological reaction device with adjustable water quality and water quantity.

[0022] Figure 2 This is the overall appearance of a U-shaped low-energy biological reaction device with adjustable water quality and water quantity.

[0023] Figure 3 It is a top-down cross-sectional view of a U-shaped low-energy biological reaction device with adjustable water quality and quantity.

[0024] 1. Equipment housing; 2. Lifting rod; 3. Conical sedimentation module; 4. Lifting slider; 5. Top plate; 6. Screw adjustment assembly; 601. Nut; 602. Screw; 603. Bearing; 604. Crank; 7. Inclined tube sedimentation module; 8. Mud bucket; 9. Trapezoidal mud hole; 10. Water inlet pipe; 11. Water outlet pipe; 12. Aeration device; 1201. Aeration head; 1202. Connecting pipe; 1203. Inlet pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3In the specific implementation of the utility model, the U-shaped low-energy consumption biological reaction device with adjustable water quality and water quantity includes an equipment shell 1, a lifting rod 2 and a U-shaped sedimentation module 3. The U-shaped sedimentation module 3 is arranged inside the equipment shell 1, and a plurality of lifting rods 2 are evenly distributed around the U-shaped sedimentation module 3. The lifting rod 2 passes through a lifting slider 4 fixedly installed on the outer wall of the U-shaped sedimentation module 3. The bottom end of the lifting rod 2 is fixedly connected to the bottom surface of the equipment shell 1. A top plate 5 is installed on the top of the lifting rod 2, and a screw rod adjustment component 6 is installed in the middle of the top plate 5. An inclined tube sedimentation module 7 is installed at the bottom end of the screw rod adjustment component 6. The inclined tube sedimentation module 7 is fixed in the middle of the U-shaped sedimentation module 3, and a mud bucket 8 is installed at the bottom end of the inclined tube sedimentation module 7. An inlet Water pipe 10, a water outlet pipe 11 is installed on the side of the inclined tube sedimentation module 7, an aeration device 12 is arranged at the bottom of the equipment shell 1, the aeration device 12 includes an aeration head 1201, a connecting pipe 1202 and an air inlet pipe 1203, the aeration heads 1201 are evenly arranged at the bottom of the equipment shell 1, the aeration heads 1201 are connected by connecting pipes 1202, the connecting pipes 1202 are connected to the air inlet pipe 1203, the air inlet pipe 1203 is connected to an external blower, the water outlet pipe 11 passes through the return type sedimentation module 3 and the equipment shell 1 in sequence, and the water outlet of the water outlet pipe 11 is located outside the equipment shell 1, the vertical section of the water outlet pipe 11 is a flexible pipeline, so that the water outlet pipe 11 can be bent or stretched to meet the height adjustment requirements of the return type sedimentation module 3.

[0027] See also Figure 1 A number of trapezoidal mud holes 9 are evenly arranged in a ring shape on the outer wall of the inclined tube sedimentation module 7. The upper cross-section of the trapezoidal mud hole 9 is larger than the lower cross-section. Since the upper and lower cross-sections of the trapezoidal mud hole 9 are inconsistent, under the same flow rate, the flow velocity at the upper part of the flow hole is slow and the flow velocity at the lower part is fast, preventing sludge from accumulating at the bottom.

[0028] See also Figure 1 The screw rod adjustment assembly 6 includes a nut 601, a screw rod 602, a bearing 603 and a crank 604. The nut 601 is embedded in the middle of the top plate 5. A screw rod 602 is installed in the middle of the nut 601. The bottom end of the screw rod 602 is rotatably connected to the bearing 603 installed on the inclined tube sedimentation module 7. The top of the screw rod 602 is installed with a crank 604. When the amount of water entering the water decreases or the pollutants in the sewage decrease, the biological reaction does not require a higher residence time. At this time, the personnel can rotate the crank 604, and the screw rod 602 is driven to rotate by the crank 604. The screw rod 602 drives the inclined tube sedimentation module 7 together with the return type sedimentation module 3 to be lowered, so that the overall effective volume is reduced, so that the residence time of the mud-water mixture is reduced, so that the device can perform biological reaction under the best working conditions within the range of 50%-100% of the original design water volume or pollutant concentration. It can also be carried out according to the processing requirements of the back end by adjusting the height of the return type sedimentation module 3 to perform different degrees of biological reaction, so as to achieve controllable water quality and water quantity of the effluent.

[0029] The working principle of the utility model is:

[0030] Sewage enters the equipment shell 1 through the water inlet pipe 10, and air is dispersed in the sewage through the aeration device 12 to increase the dissolved oxygen in the sewage, thereby generating a nitrification reaction in the outer circle to achieve the effect of removing the chemical oxygen demand and pollutant indicators such as ammonia nitrogen in the sewage. The sewage after the nitrification reaction is continuously filled with oxygen inside, thereby increasing the volume of the water, and driven by the rising air flow, the sewage is lifted upward and enters the return type sedimentation module 3. The mud and water mixture of the peripheral reaction enters the middle inclined tube sedimentation module 7 after passing through the trapezoidal mud hole 9 to achieve mud and water separation. At the same time, there is no oxygen supplement outside the return type sedimentation module 3, which produces an anoxic environment, which is conducive to the denitrification reaction of microorganisms, thereby achieving the effect of removing total nitrogen. The sludge produced by the precipitation is collected by the mud bucket 8 and gradually falls back to the inside of the equipment shell 1, thereby achieving the effect of sludge reflux.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A U-shaped low-energy consumption biological reaction device with adjustable water quality and quantity, comprising a device housing (1), a lifting rod (2) and a U-shaped sedimentation module (3), characterized in that: A circular sedimentation module (3) is arranged inside the equipment housing (1). A plurality of lifting rods (2) are evenly distributed around the circular sedimentation module (3). The lifting rods (2) penetrate a lifting slider (4) fixedly mounted on the outer wall of the circular sedimentation module (3). The bottom ends of the lifting rods (2) are fixedly connected to the bottom surface of the equipment housing (1). A top plate (5) is mounted on the top of the lifting rods (2). A screw adjustment assembly (6) is mounted in the middle of the top plate (5). An inclined tube sedimentation module (7) is mounted at the bottom end of the screw adjustment assembly (6). The inclined tube sedimentation module (7) is fixed in the middle of the circular sedimentation module (3). A mud bucket (8) is mounted at the bottom end of the inclined tube sedimentation module (7). A plurality of trapezoidal mud holes (9) are evenly arranged in an annular shape on the outer wall of the inclined tube sedimentation module (7). A water inlet pipe (10) is mounted on one side of the equipment housing (1). A water outlet pipe (11) is mounted on the side of the inclined tube sedimentation module (7). An aeration device (12) is arranged at the bottom of the equipment housing (1).

2. The U-shaped low-energy consumption biological reaction device with adjustable water quality and quantity according to claim 1 is characterized by: The screw rod adjustment assembly (6) comprises a nut (601), a screw rod (602), a bearing (603) and a crank (604); the nut (601) is embedded in the middle of the top plate (5); a screw rod (602) is installed in the middle of the nut (601); the bottom end of the screw rod (602) is rotatably connected to a bearing (603) installed on the inclined tube sedimentation module (7); and the top end of the screw rod (602) is installed with a crank (604).

3. The U-shaped low-energy consumption biological reaction device with adjustable water quality and quantity according to claim 1 is characterized by: The aeration device (12) comprises an aeration head (1201), a connecting pipe (1202) and an air intake pipe (1203); the aeration heads (1201) are evenly arranged at the bottom of the device housing (1); the aeration heads (1201) are connected via the connecting pipe (1202); the connecting pipe (1202) is connected to the air intake pipe (1203); and the air intake pipe (1203) is connected to an external blower.

4. The U-shaped low-energy consumption biological reaction device with adjustable water quality and quantity according to claim 1 is characterized by: The upper cross section of the trapezoidal mud hole (9) is larger than the lower cross section.

5. The U-shaped low-energy consumption biological reaction device with adjustable water quality and quantity according to claim 1 is characterized by: The water outlet pipe (11) sequentially passes through the return-type sedimentation module (3) and the equipment housing (1), and the water outlet of the water outlet pipe (11) is located outside the equipment housing (1), and the vertical section of the water outlet pipe (11) is a flexible pipeline.

Images