Microbial water treatment device

Abstract

The invention discloses a microbial water treatment device which comprises a tank body, a water inlet mechanism, an aeration mechanism and a flow guide mechanism, the tank body is filled with filler, the flow guide mechanism is arranged in the middle of the tank body, the flow guide mechanism is a cavity with the upper portion and the lower portion communicated, the aeration mechanism and the water inlet mechanism are both arranged at the top of the tank body, and the aeration mechanism and the water inlet mechanism are arranged on the top of the tank body. The aeration mechanism penetrates through the flow guide mechanism to reach the bottom in the tank body, and the water inlet mechanism extends into the tank body to the outer side of the flow guide mechanism; the flow guide mechanism is arranged to be matched with the aeration mechanism and the water inlet mechanism to work, water flow circulation is formed in the water treatment device, the hydraulic flow characteristic in the water treatment device is improved, the fluidization energy consumption is reduced, and dead zones in the water treatment device are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage / tail water treatment, and in particular to a microbial water treatment device. Background Art

[0002] The eutrophication problem of water bodies in my country was once increasingly serious. However, in recent years, with the promotion and implementation of a series of governance measures, my country's water pollution problem is gradually being effectively governed. However, the conventional secondary biochemical treatment process, which is widely used at present, has a low removal rate of nitrogen substances in sewage, and it is difficult to adapt to the higher requirements of social development for deep sewage purification. Therefore, the research on denitrification technology has become a research focus in the field of water pollution control. Researchers are committed to exploring more efficient, economical and environmentally friendly denitrification technologies and processes to further improve the efficiency of sewage treatment. Practice shows that the MBBR (moving bed biofilm reactor) process is stronger than the traditional activated sludge method and the traditional biofilm method in the treatment of organic matter and ammonia nitrogen. This technology can improve the removal efficiency of organic matter and has a good denitrification effect. The principle of the MBBR process is to increase the biomass and biological species in the reactor by adding a certain amount of suspended filler to the reactor, thereby improving the treatment efficiency of the reactor. The MBBR process has the advantages of both traditional fluidized bed and biological contact oxidation, and is a new and efficient sewage treatment method. However, the MBBR process has the following problems during operation: the fillers in the reactor are in a fluidized state due to the lifting effect of aeration and water flow, but local filler accumulation is prone to occur, resulting in uneven distribution of suspended fillers. If a high-power agitator is installed in the dead water area to prevent the above situation, it will not only cause excessive energy consumption, but also cause filler wear and make it difficult for biofilm to adhere to the filler. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a microbial water treatment device to improve the hydraulic flow characteristics in the water treatment device, reduce fluidization energy consumption, and reduce dead zones in the water treatment device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A microbial water treatment device comprises a tank body, a water inlet mechanism, an aeration mechanism and a flow guide mechanism, wherein the tank body is filled with filler, a flow guide mechanism is arranged in the middle of the tank body, the flow guide mechanism is a cavity with an upper part and a lower part connected, the aeration mechanism and the water inlet mechanism are both arranged on the top of the tank body, the aeration mechanism passes through the flow guide mechanism to the bottom of the tank body, and the water inlet mechanism extends into the tank body to the outside of the flow guide mechanism.

[0006] In the microbial water treatment device, the water inlet mechanism includes a water inlet main pipe and a water outlet branch pipe. The water inlet main pipe is installed on the top of the tank body. A water inlet is provided on the water inlet main pipe. The water inlet main pipe is connected to the upper end of at least one group of the water outlet branches. The lower end of at least one group of the water outlet branches is provided with at least one water outlet and extends to the outside of the diversion mechanism.

[0007] In the microbial water treatment device, the water inlet main pipe is connected to a plurality of groups of water outlet branch pipes, and the plurality of groups of water outlet branch pipes are evenly distributed and arranged on the outside of the flow guide mechanism.

[0008] In the microbial water treatment device, the lower end of the water outlet branch surrounds the flow guide mechanism and is evenly distributed with a plurality of water outlets.

[0009] In the microbial water treatment device, the aeration mechanism includes a pressure boosting device and an aeration pipe. The pressure boosting device is installed on the top of the tank body. The upper ends of at least one group of aeration pipes are connected to the pressure boosting device. The lower ends of at least one group of aeration pipes are provided with aeration ports and extend through the guide mechanism to the bottom of the tank body.

[0010] In the microbial water treatment device, the lower end of the aeration pipe is arranged as a disc aerator.

[0011] In the microbial water treatment device, the lower end of the aeration pipe is provided with at least one group of tubular aerators.

[0012] In the microbial water treatment device, an ejector is arranged on the aeration pipe.

[0013] The microbial water treatment device further comprises a control cabinet, which is installed on the outside of the tank body and is electrically connected to the boosting device.

[0014] In the microbial water treatment device, the flow guide mechanism includes a flow guide tube, which is coaxially arranged with the tank body, installed in the middle of the tank body through a connector, and the lower end of the flow guide tube is arranged as a bell mouth.

[0015] In the microbial water treatment device, a maintenance manhole is provided in the middle of the tank body, and a maintenance port is provided on one side of the guide tube.

[0016] In the microbial water treatment device, a bell-shaped cylinder which is narrow at the top and wide at the bottom is provided on the upper part of the tank body, the lower part of the bell-shaped cylinder covers the upper part of the flow guide mechanism, the lower end of the bell-shaped cylinder is sealed with the inner wall of the tank body, a water collecting trough is provided on the upper part of the bell-shaped cylinder, a drain pipe is provided on the outer side of the upper part of the tank body, the drain pipe is connected with the water collecting trough through the drain groove, and the upper opening of the bell-shaped cylinder is connected to the top of the tank body and is provided with a cover plate.

[0017] In the microbial water treatment device, a sewage collecting trough is arranged at the bottom of the tank body, a conical cylinder which is wide at the top and narrow at the bottom is arranged on the upper part of the sewage collecting trough, the upper end of the conical cylinder is sealed with the inner wall of the tank body, and a sewage outlet extending to the outside of the tank body is arranged on one side of the bottom of the sewage collecting trough.

[0018] The microbial water treatment device also includes a top interception net, which is arranged in the middle of the bell-shaped cylinder.

[0019] The microbial water treatment device also includes a middle interception net, which is arranged inwardly or outwardly inclined between the lower inner side of the bell-shaped cylinder and the upper outer side of the guide mechanism.

[0020] The microbial water treatment device further comprises a bottom interception net, which is arranged between the sewage collecting tank and the conical cylinder. A discharge port extending to the outside of the tank body is arranged on one side of the bottom of the conical cylinder.

[0021] In the microbial water treatment device, a maintenance observation hole is arranged on the top of the tank body.

[0022] In the microbial water treatment device, a ladder leading to the top is arranged on the outer side of the tank body, and a guardrail is arranged on the top of the tank body.

[0023] Beneficial effects:

[0024] The present invention provides a microbial water treatment device, which provides a flow guide mechanism in a tank body, wherein the gas filled into the aeration mechanism drives the water at the bottom of the tank body to flow upward through the flow guide mechanism, and then the water falls back through the outside of the flow guide mechanism, and the water flowing into the water inlet mechanism simultaneously drives it to flow downward, thereby forming an up-and-down reciprocating water flow circulation in the tank body, so that the filler and the water body are fully contacted and mixed, thereby reducing the fluidization energy consumption and reducing the dead zone in the water treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of a microbial water treatment device provided by the present invention;

[0026] Figure 2 A top view of a tank body of the microbial water treatment device provided by the present invention;

[0027] Figure 3 A structural diagram of the water inlet mechanism of the microbial water treatment device provided by the present invention;

[0028] Figure 4 This is a structural diagram of the aeration mechanism of the microbial water treatment device provided by the present invention.

[0029] Explanation of main symbols: 1-tank body, 11-bell-shaped cylinder, 12-water collecting trough, 13, drainage trough, 14-drainage pipe, 15-installation groove, 16 sewage collecting trough, 17-conical cylinder, 18-drainage outlet, 19-discharge outlet, 2-water inlet mechanism, 21-water inlet main pipe, 22-water outlet branch, 23-water inlet, 24-water outlet, 3-aeration mechanism, 31-boosting device, 32-aeration pipe, 33-ejector, 34 check valve, 35-regulating valve, 36 cut-off ball valve, 37-pressure gauge, 4-flow guide mechanism, 41-flow guide tube, 42-inspection port, 5-filler, 6-control cabinet, 71-top interception net, 72-middle interception net, 73-bottom interception net, 81-inspection manhole, 82-inspection observation hole, 83-ladder, 84-guardrail, 85-cover plate. DETAILED DESCRIPTION

[0030] The present invention provides a microbial water treatment device. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the description of the present invention, it should be understood that the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0032] See also Figure 1 The present invention provides a microbial water treatment device, comprising a tank body 1, a water inlet mechanism 2, an aeration mechanism 3, and a flow guide mechanism 4. The tank body 1 is filled with a filler 5, and the middle part of the tank body 1 is provided with a flow guide mechanism 4, and the flow guide mechanism 4 is a cavity with an upper part and a lower part connected. The aeration mechanism 3 and the water inlet mechanism 2 are both arranged on the top of the tank body, and the aeration mechanism 3 passes through the flow guide mechanism 4 to the bottom of the tank body 1, and the water inlet mechanism 2 extends into the tank body 1 to the outside of the flow guide mechanism 4.

[0033] It should be noted that the filler 5 is a filler with similar functions such as MBRR, sponge, polyurethane, etc. Preferably, its structural surface has good adhesion ability, a large effective specific surface area, and a large amount of attached microorganisms, which is conducive to the growth of various microorganisms. It not only provides space for the growth of heterotrophic bacteria, but also creates conditions for the growth of autotrophic bacteria, providing a basis for wastewater denitrification and phosphorus removal.

[0034] The present invention arranges a flow guide mechanism 4 in the tank body 1, and the gas filled into the aeration mechanism 3 drives the water at the bottom of the tank body 1 to flow upward through the flow guide mechanism to form an ascending gas-water mixture, and then the water falls back from the outside of the flow guide mechanism 4, and the water flowing in from the water inlet mechanism 2 is mixed with the falling water. At the same time, the water inlet mechanism 2 pushes it to flow downward, forming an internal and external circulation hydraulic flow state in the tank body, and fully stirring and mixing is carried out under the disturbance of the filler 5 and the air in the water body, so that the microorganisms on the filler are fully in contact with the water body, reducing the fluidization energy consumption, reducing the dead zone in the water treatment device, and achieving a better sewage treatment effect.

[0035] See also Figure 3 Further, the water inlet mechanism 2 includes a water inlet main pipe 21 and a water outlet branch 22. The water inlet main pipe 21 is installed on the top of the tank body. A water inlet 23 is provided on the water inlet main pipe 21. The water inlet main pipe 21 is connected to the upper end of at least one group of the water outlet branches 22. The lower end of at least one group of the water outlet branches 22 is provided with at least one water outlet 24 and extends to the outside of the guide mechanism 4. For the specific arrangement of the water outlet branches 22, the present invention provides the following solutions:

[0036] Solution 1, specifically, in the microbial water treatment device, the water inlet main pipe 21 is connected to a plurality of groups of water outlet branches 22, and the plurality of groups of water outlet branches 22 are evenly distributed outside the flow guide mechanism 4. By increasing the number of water outlet branches 22 and evenly distributing them outside the flow guide mechanism 4, the water body and the filler are mixed more evenly and contacted more fully.

[0037] Solution 2: In the microbial water treatment device, the lower end of the water outlet manifold 22 surrounds the flow guide mechanism 4 and is evenly distributed with multiple water outlets 24. By designing the lower end of the water outlet manifold in an annular shape and evenly distributing multiple water outlets 24, the water and the filler are mixed more evenly and contact more fully.

[0038] See also Figure 4 Further, the aeration mechanism 3 includes a pressure boosting device 31 and an aeration pipe 32. The pressure boosting device 31 is installed on the top of the tank body 1. The upper ends of at least one group of aeration pipes 32 are connected to the pressure boosting device 31. The lower ends of at least one group of aeration pipes 32 are provided with aeration ports and extend through the guide mechanism 4 to the bottom of the tank body 1. The pressure boosting device 31 can be a pressure boosting pump or the like.

[0039] Preferably, the lower end of the aeration pipe 32 is provided with a disc aerator or at least one group of tube aerators.

[0040] Preferably, an ejector 33 is provided on the aeration pipe 32 to further pressurize the airflow and improve the efficiency of aeration. Furthermore, valves such as a check valve 34, a regulating valve 35, and a shut-off ball valve 36 may be installed on the aeration pipe 32 to improve the reliability and controllability of the aeration mechanism 3.

[0041] Preferably, the microbial water treatment device also includes a control cabinet 6, which is installed on the outside of the tank body 1. The control cabinet 6 is electrically connected to the boosting device 31. Furthermore, a pressure gauge 37 can be installed on the aeration pipe 32. The control cabinet 6 receives data fed back by the pressure gauge 37 to monitor the pressure condition of the aeration pipe 32. In addition, the control cabinet can also be connected to a water quality detection device, a water flow detection device, etc. to achieve more intelligent control.

[0042] See also Figure 1 , further, the flow guide mechanism 4 includes a flow guide tube 41, the flow guide tube 41 is coaxially arranged with the tank body 1, the flow guide tube 41 is installed in the middle of the tank body 1 through a connecting piece, and the lower end of the flow guide tube 41 is arranged as a bell mouth; the flow guide mechanism 4 can guide the gas-water mixture driven by aeration to flow upward, and at the same time divide the space of the tank body 1 into inner and outer cavities, so as to form a path for the water body to circulate up and down inside the water treatment device. It should be noted that the horizontal cross-sectional shape of the flow guide tube is not limited, and can be circular, square, rectangular, triangular, honeycomb, etc., all of which can realize the technical solution of the present application, and the present application Figure 2 The circular shape of the horizontal cross section of the guide tube is only an example of an implementation.

[0043] Preferably, a maintenance manhole 81 may be provided in the middle of the tank body 1 , and a maintenance port 42 may be provided on one side of the guide tube, so that maintenance personnel can enter the tank body 1 through the maintenance manhole to repair, replace or maintain the conductor mechanism 4 .

[0044] See also Figure 1Furthermore, a bell-shaped cylinder 11 with a narrow top and a wide bottom is provided at the upper part of the tank body 1, the lower part of the bell-shaped cylinder 11 covers the upper part of the diversion mechanism 4, the lower end of the bell-shaped cylinder 11 is sealed with the inner wall of the tank body 1, a water collecting trough 12 is provided at the upper part of the bell-shaped cylinder 11, a drain pipe 14 is provided at the outer side of the upper part of the tank body, the drain pipe 14 is connected with the water collecting trough 12 through the drain groove 13, and the upper opening of the bell-shaped cylinder 11 is connected with the top of the tank body 1 and is provided with a cover plate 85. Through the above arrangement, the water body is separated from the pollutants, and the pollutants are settled. The treated water body is lighter in quality than the untreated water body. A water hole is opened at the bottom of the water collecting trough 12. As the water level rises, the water body flows into the water collecting trough 12 from the water hole, and is discharged through the water collecting trough 12, the drain groove 13, and the drain pipe 14, and the water body forms a cycle of in and out. It should be noted that the shapes of the horizontal cross sections of the tank body and the bell-shaped cylinder are not limited and can be circular, square, rectangular, triangular, etc., and can all achieve the technical solution of the present application. Figure 2 The circular horizontal cross-sectional shape of the tank body and the bell-shaped cylinder is only an example of an implementation method.

[0045] Preferably, a mounting groove 15 is provided on the upper portion of the bell-shaped cylinder 11, and the aeration mechanism 3 is installed in the mounting groove 15. The water collecting tank 12 is arranged in a ring shape around the upper portion of the bell-shaped cylinder 11, so that the structure of the water treatment device is more compact.

[0046] Furthermore, a sewage collecting tank 16 is provided at the bottom of the tank body 1, and a tapered cylinder 17 which is wide at the top and narrow at the bottom is provided at the top of the sewage collecting tank 16. The upper end of the tapered cylinder 17 is sealed against the inner wall of the tank body 1, and a sewage outlet 18 extending to the outside of the tank body is provided at one side of the bottom of the sewage collecting tank 16. Through the above arrangement, the solid pollutants separated from the water body slide down along the funnel-like slope in the tapered cylinder 17, and are concentrated and accumulated in the sewage collecting tank 16. The maintenance personnel can open the sewage outlet 18 to discharge and clean the pollutants in the sewage collecting tank 16.

[0047] Furthermore, the microbial water treatment device can prevent the filler from being discharged with the water or accumulating in the drain outlet to cause blockage or accumulating in the sewage outlet to cause blockage by setting a multi-layer interception net in the tank body 1. The implementation plan is as follows:

[0048] Specifically, the microbial water treatment device includes a top interception net 71, which is arranged in the middle of the bell-shaped cylinder 11; the top interception net 71 can intercept the filler 5 to prevent the filler 5 from being discharged from the sump along with the flow of water, effectively reducing the loss of the filler 5 in the tank body, and the filler 5 will not accumulate in the sump 12, causing the drain outlet to be blocked.

[0049] It also includes a middle interception net 72, which is arranged inwardly or outwardly tilted between the lower inner side of the bell-shaped cylinder 11 and the upper outer side of the diversion mechanism 4. The middle interception net 72 is used to limit the flow direction of the water body, so that the microorganisms on the filler 5 are stably attached, so that the water body can be fully mixed and contacted with the filler at the first time after entering the water treatment device, and the backflow of the water body can effectively flush the tilted middle interception net, so that the filler and pollutants attached to the net fall back smoothly, avoiding clogging of the middle interception net.

[0050] It also includes a bottom interception net, which is arranged between the sewage collecting tank 16 and the conical cylinder 17. A discharge port 19 extending to the outside of the tank body 1 is arranged on one side of the bottom of the conical cylinder 17. The bottom interception net 73 is used to separate the filler 5 from solid pollutants such as sludge. The solid pollutants slide into the sewage collecting tank 16 through the conical cylinder 17 to prevent the filler 5 from falling into the sewage collecting tank 16. In addition, the discharge port 19 is arranged to facilitate the discharge of the filler 5, so that the maintenance personnel can replace the filler in the water treatment device.

[0051] See also Figure 2 Preferably, a maintenance observation hole 82 is provided on the top of the tank body 1, through which maintenance personnel can observe the working condition of the water treatment device.

[0052] See also Figure 2 Preferably, a ladder 83 leading to the top is provided on the outer side of the tank body 1, and a guardrail 84 is provided on the top of the tank body 1 to facilitate maintenance personnel.

[0053] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A microbial water treatment device, characterized in that: The invention comprises a tank body, a water inlet mechanism, an aeration mechanism and a flow guide mechanism. The tank body is filled with fillers. The flow guide mechanism is arranged in the middle of the tank body. The flow guide mechanism is a cavity with an upper part and a lower part connected. The aeration mechanism and the water inlet mechanism are both arranged on the top of the tank body. The aeration mechanism passes through the flow guide mechanism to the bottom of the tank body. The water inlet mechanism extends into the tank body to the outside of the flow guide mechanism.

2. The microbial water treatment device according to claim 1, characterized in that: The water inlet mechanism includes a water inlet main pipe and a water outlet branch. The water inlet main pipe is installed on the top of the tank body. A water inlet is provided on the water inlet main pipe. The water inlet main pipe is connected to the upper end of at least one group of the water outlet branches. The lower end of at least one group of the water outlet branches is provided with at least one water outlet and extends to the outside of the diversion mechanism.

3. The microbial water treatment device according to claim 2, characterized in that: The water inlet main pipe is connected to a plurality of groups of water outlet branch pipes, and the plurality of groups of water outlet branch pipes are evenly distributed on the outside of the flow guide mechanism.

4. The microbial water treatment device according to claim 2, characterized in that: The lower end of the water outlet branch surrounds the flow guiding mechanism and is evenly distributed with a plurality of water outlets.

5. The microbial water treatment device according to claim 1, characterized in that: The aeration mechanism includes a pressure boosting device and an aeration pipe. The pressure boosting device is installed on the top of the tank body. The upper ends of at least one group of aeration pipes are connected to the pressure boosting device. The lower ends of at least one group of aeration pipes are provided with aeration ports and extend through the guide mechanism to the bottom of the tank body.

6. The microbial water treatment device according to claim 5, characterized in that: The lower end of the aeration pipe is arranged as a disc aerator.

7. The microbial water treatment device according to claim 5, characterized in that: The lower end of the aeration pipe is provided with at least one group of tubular aerators.

8. The microbial water treatment device according to claim 5, characterized in that: An ejector is arranged on the aeration pipe.

9. The microbial water treatment device according to claim 5, characterized in that: It also includes a control cabinet, which is installed on the outside of the tank body and is electrically connected to the boosting device.

10. The microbial water treatment device according to claim 1, characterized in that: The flow guiding mechanism comprises a flow guiding tube, which is coaxially arranged with the tank body, installed in the middle of the tank body through a connecting piece, and the lower end of the flow guiding tube is arranged as a bell mouth.

11. The microbial water treatment device according to claim 10, characterized in that: A maintenance manhole is arranged in the middle of the tank body, and a maintenance port is arranged on one side of the guide tube.

12. The microbial water treatment device according to claim 1, characterized in that: A bell-shaped cylinder which is narrow at the top and wide at the bottom is arranged on the upper part of the tank body, the lower part of the bell-shaped cylinder covers the upper part of the diversion mechanism, the lower end of the bell-shaped cylinder is sealed with the inner wall of the tank body, a water collecting trough is arranged on the upper part of the bell-shaped cylinder, a drain pipe is arranged on the outer side of the upper part of the tank body, the drain pipe is connected with the water collecting trough through the drain groove, the upper opening of the bell-shaped cylinder is connected to the top of the tank body and is provided with a cover plate.

13. The microbial water treatment device according to claim 12, characterized in that: A sewage collecting trough is arranged at the bottom of the tank body, a tapered cylinder which is wide at the top and narrow at the bottom is arranged at the top of the sewage collecting trough, the upper end of the tapered cylinder is sealed with the inner wall of the tank body, and a sewage outlet extending to the outside of the tank body is arranged on one side of the bottom of the sewage collecting trough.

14. The microbial water treatment device according to claim 13, characterized in that: It also includes a top interception net, which is arranged in the middle of the bell-shaped cylinder.

15. The microbial water treatment device according to claim 13, characterized in that: It also includes a middle interception net, which is arranged inwardly or outwardly inclined between the lower inner side of the bell-shaped cylinder and the upper outer side of the guide mechanism.

16. The microbial water treatment device according to claim 13, characterized in that: It also includes a bottom interception net, which is arranged between the sewage collecting tank and the conical cylinder. A discharge port extending to the outside of the tank body is arranged on one side of the bottom of the conical cylinder.

17. The microbial water treatment device according to claim 1, characterized in that: The top of the tank body is provided with an inspection and observation hole.

18. The microbial water treatment device according to claim 17, characterized in that: A ladder leading to the top is arranged on the outer side of the tank body, and a guardrail is arranged on the top of the tank body.

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