A microbial sewage treatment device

Abstract

The present invention discloses a microbial sewage treatment device, belonging to the field of microbial sewage treatment technology, comprising a container, wherein a microbial membrane and a bio-wax supply member are provided inside the container, a water inlet mechanism extends into the container, an air inlet mechanism extends into the container, and a drainage mechanism is located on one side above the bottom wall of the container and on the other side outside the container. The water inlet mechanism comprises a supply pipe, a main pipe, and a branch pipe, wherein the supply pipe is arranged outside the container, one end of the main pipe is connected to the supply pipe via a U-shaped connecting structure, the main pipe is arranged horizontally on the upper side of the container, and there are several branch pipes, each of which has one end connected to the main pipe, and the other end of each branch pipe extends to the lower side of the container. This invention improves the sewage treatment effect through the unique design of the water inlet mechanism, air inlet mechanism, microbial membrane, and bio-wax supply mechanism.

Description

Technical Field

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

[0002] In the field of sewage treatment, microbial treatment technology has been widely used due to its advantages of high efficiency and environmental protection. However, existing microbial sewage treatment technology has many shortcomings.

[0003] In traditional sewage treatment, sewage is typically injected directly into the upper portion of a container through an inlet pipe on the bottom. This approach has significant drawbacks. Firstly, the sewage must pass through floating impurities on the liquid surface during injection, which can easily lead to impurities mixing into the sewage and causing secondary pollution. Secondly, the newly injected sewage has difficulty in fully contacting microorganisms, preventing the microorganisms from effectively decomposing and transforming pollutants in the sewage, significantly reducing the efficiency and quality of sewage treatment. Summary of the Invention

[0004] In response to the problems existing in the existing technology, the present invention provides a microbial sewage treatment device, which effectively avoids the defects of traditional technology and significantly improves the sewage treatment effect through the unique design of water inlet mechanism, air inlet mechanism, microbial membrane and bio-wax supply mechanism.

[0005] The present invention is achieved by a microbial sewage treatment device comprising:

[0006] A container, wherein a microbial film and a biowax supply member are provided inside the container,

[0007] a water inlet mechanism extending into the interior of the container;

[0008] an air intake mechanism extending into the interior of the container;

[0009] a drainage mechanism, one side of which is located on the upper side of the bottom wall of the container and the other side of which is located outside the container;

[0010] Wherein, the water inlet mechanism includes:

[0011] A supply pipe, a main pipe and a branch pipe, wherein the supply pipe is arranged outside the container, one end of the main pipe is connected to the supply pipe through a U-shaped connecting structure, the main pipe is horizontally arranged on the upper side of the container, and there are several branch pipes, and one end of each branch pipe is connected to the main pipe, and the other end of the branch pipe extends to the lower side of the container.

[0012] As a preferred embodiment of the present invention, the discharge end of the water inlet mechanism is located below 20% of the height of the inner cavity of the container, and the discharge end of the air inlet mechanism is located below 20% of the height of the inner cavity of the container.

[0013] As a preferred embodiment of the present invention, a water inlet solenoid valve is provided on the supply pipe; the air intake mechanism includes an air pump and an air intake pipe, and the air intake pipe is arranged inside the container.

[0014] As a preferred embodiment of the present invention, the drainage mechanism includes: a water outlet pipe, a flow rate sensor, and a water outlet solenoid valve; the water outlet pipe runs through the container, the inlet end of the water outlet pipe is located inside the container, and the outlet end of the water outlet pipe is located outside the container; the flow rate sensor and the water outlet solenoid valve are both arranged on the water outlet pipe; the flow rate sensor signal is connected to a controller, and the controller signal is connected to the water inlet solenoid valve and the air pump; the inlet end of the water outlet pipe is connected to a drain pan, the upper wall of the drain pan is a filter pan, and the filter pan is horizontally arranged in the container.

[0015] As a preferred embodiment of the present invention, the diameter of the filter disc is 5-20 times the inner diameter of the outlet pipe. The outlet end of the air inlet pipe is connected to the drain disc.

[0016] As a preferred embodiment of the present invention, the controller includes a water outlet speed input module, a calculation module, a water inlet speed control module and an air inlet speed control module; the water outlet speed input module signal is connected to the flow rate sensor; the calculation module is used to calculate the water inlet speed and the air inlet speed according to the data of the flow rate sensor; the water inlet speed control module signal is connected to the water inlet solenoid valve; the air inlet speed control module signal is connected to the air pump; wherein, assuming the water inlet speed is , the intake speed is The water outlet speed is , set a proportional coefficient , which is used to control the degree of change of the air intake speed when the water outlet speed changes; assuming the initial air intake speed is ;

[0017] The calculation formula of the calculation module is:

[0018] .

[0019] As a preferred embodiment of the present invention, during sewage treatment, the sewage liquid level in the container is not less than 90% of the height of the container inner cavity.

[0020] As a preferred embodiment of the present invention, the container is provided with a debris discharge door via an elastic member; an air bag is connected above the debris discharge door via a connecting line, and the air bag is located at the sewage liquid surface.

[0021] As a preferred embodiment of the present invention, the filter disc is rotatably connected to the water outlet pipe through a rotary joint, and the filter disc is connected to a rotating drive member; a toggle plate is fixedly connected to the lower side of the filter disc, and the lower side of the toggle plate is affixed to the upper surface of the bottom wall of the container; a roller is fixedly connected to the lower side of the filter disc, and the rolling end of the roller is affixed to the bottom upper surface of the container.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Compared to the traditional method of injecting sewage directly from the bottom of the container through the water inlet pipe, this device's water inlet mechanism injects sewage from the bottom of the container through a main pipe on the upper side and a branch pipe extending to the bottom. This avoids the problem of sewage floating impurities on the liquid surface and reduces secondary contamination of the sewage by impurities. This method of injecting sewage from the bottom promotes more even distribution of sewage within the container, allowing sewage to fully contact the microbial membrane, providing better conditions for microbial treatment of sewage and improving sewage treatment efficiency.

[0024] 2. The microbial membrane provides a place for microorganisms to attach, allowing them to aggregate in large numbers, forming a stable microbial community that can continuously and efficiently treat wastewater. The biowax supply mechanism provides nutrients to the microorganisms, ensuring their growth and activity, helping to maintain their efficiency in wastewater treatment and extending their service life.

[0025] 3. The buoyancy provided by the air intake mechanism can float floating impurities on the water surface, making the impurities easier to collect and process, and avoiding the impurities floating around in the sewage and affecting the effect of sewage treatment.

[0026] 4. The air intake mechanism provides the required oxygen for microorganisms, ensuring the aerobic metabolism of microorganisms, which is beneficial to the decomposition and transformation of pollutants by microorganisms and improves the quality and speed of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the microbial sewage treatment device provided in Example 1 of the present invention from a first perspective;

[0028] Figure 2 is a signal connection diagram of the controller provided in Example 1 of the present invention;

[0029] Figure 3 This is a schematic structural diagram of the microbial sewage treatment device provided in Example 1 of the present invention from a second perspective;

[0030] Figure 4 2 is a schematic top view of the microbial sewage treatment device provided in Example 2 of the present invention;

[0031] Figure 5The embodiment 2 of the present invention provides Figure 4 A schematic diagram of a cross-sectional three-dimensional structure of the AA portion of the middle portion omitting the airbag;

[0032] Figure 6 This is a schematic diagram of the internal structure of the microbial sewage treatment device provided in Example 2 of the present invention.

[0033] In the figure: 1. Container; 2. Microbial membrane; 3. Bio-wax supply part; 4. Supply pipe; 5. Main pipe; 6. Branch pipe; 7. U-shaped connecting structure; 8. Air pump; 9. Air inlet pipe; 10. Water outlet pipe; 11. Flow rate sensor; 12. Water outlet solenoid valve; 13. Controller; 14. Drain pan; 15. Filter pan; 16. Water outlet speed input module; 17. Calculation module; 18. Water inlet speed control module; 19. Air inlet speed control module; 20. Drain door; 21. Air bag; 22. Toggle plate; 23. Roller; 24. Water inlet solenoid valve. DETAILED DESCRIPTION

[0034] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0035] The structure of the present invention is described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] like Figures 1 to 3 As shown, an embodiment of the present invention provides a microbial sewage treatment device, comprising:

[0038] Container 1, wherein a microbial film 2 and a biowax supply part 3 are provided inside the container 1,

[0039] A water inlet mechanism extending into the interior of the container 1;

[0040] An air intake mechanism extending into the interior of the container 1;

[0041] a drainage mechanism, one side of which is located on the upper side of the bottom wall of the container 1 and the other side of which is located outside the container 1;

[0042] Wherein, the water inlet mechanism includes:

[0043] A supply pipe 4, a main pipe 5 and a branch pipe 6, wherein the supply pipe 4 is arranged outside the container 1, one end of the main pipe 5 is connected to the supply pipe 4 through a U-shaped connecting structure 7, the main pipe 5 is horizontally arranged on the upper side of the interior of the container 1, and there are several branch pipes 6, and one end of each branch pipe 6 is connected to the main pipe 5, and the other end of the branch pipe 6 extends to the lower side of the interior of the container 1.

[0044] With this arrangement, during use, sewage first enters the supply pipe 4, then flows through the U-shaped connection structure into the main pipe 5. The main pipe 5 is horizontally arranged on the upper side of the container 1, while multiple branch pipes 6 connect to the main pipe 5 at one end and extend to the lower side of the container 1 at the other end. This design allows sewage to flow from the upper side of the container 1, through the main pipe 5 and branch pipes 6, and ultimately into the lower side of the container 1.

[0045] The air intake mechanism extends into container 1 and has two primary functions. First, it provides the oxygen necessary for the metabolism of microorganisms within container 1, promoting their growth and reproduction, enabling them to better decompose and transform pollutants in the wastewater. Second, the gas generated by the air intake mechanism provides buoyancy for floating impurities on the liquid surface, helping them float to the surface and facilitate subsequent separation and processing.

[0046] Inside container 1, a microbial membrane 2 is installed. This is a core component for sewage treatment. A large number of microorganisms are attached to the membrane 2. When sewage is injected from the bottom, it flows through the membrane 2. The microorganisms on the membrane 2 biodegrade organic pollutants and harmful substances in the sewage, converting them into harmless substances or carbon dioxide and water.

[0047] At the same time, a biowax supply mechanism is also provided in the container 1. The biowax can provide a certain growth environment and nutrients for microorganisms, promote the growth and activity of microorganisms, and improve the efficiency of sewage treatment.

[0048] One side of the drainage mechanism is located on the upper side of the bottom wall of the container 1, and the other side is located on the outside of the container 1. The treated sewage is discharged from the container 1 through the drainage mechanism, while the impurities or incompletely treated substances settled at the bottom of the container 1 will be retained in the container 1 and will not be discharged.

[0049] Preferably, the discharge end of the water inlet mechanism is located below 20% of the height of the inner cavity of the container 1 , and the discharge end of the air inlet mechanism is located below 20% of the height of the inner cavity of the container 1 .

[0050] Furthermore, a water inlet solenoid valve 24 is provided on the supply pipe 4 ; the air intake mechanism includes an air pump 8 and an air intake pipe 9 , and the air intake pipe 9 is arranged inside the container 1 .

[0051] Furthermore, the drainage mechanism includes: an outlet pipe 10, a flow rate sensor 11, and an outlet solenoid valve 12. The outlet pipe 10 passes through the container 1, with its inlet end located inside the container 1 and its outlet end located outside the container 1. The flow rate sensor 11 and the outlet solenoid valve 12 are both mounted on the outlet pipe 10. The flow rate sensor 11 is signal-connected to a controller 13, which is signal-connected to the inlet solenoid valve 24 and the air pump 8. The inlet end of the outlet pipe 10 is connected to a drain pan 14, the upper wall of which is a filter pan 15, which is horizontally mounted in the container 1. Water in the container 1 enters the outlet pipe 10 through the filter pan 15, which can filter impurities and ensure the quality of the water discharged from the drain pipe. When the flow rate sensor 11 detects that the drainage flow rate of the outlet pipe 10 decreases, the water inlet solenoid valve 24 can be controlled accordingly to reduce the water inlet speed, and the air pump 8 can also be controlled accordingly to increase the air supply speed of the air pump 8.

[0052] Furthermore, the diameter of the filter disc 15 is 5-20 times the inner diameter of the outlet pipe 10. The outlet end of the air inlet pipe 9 is connected to the drain pan 14.

[0053] This arrangement allows, on the one hand, gas entering the filter disc 15 to flow upward through it under the influence of buoyancy, breaking the gas into tiny bubbles that then enter the container 1. This improves the effectiveness of air distribution and the lifting force against floating impurities. Furthermore, during drainage, water flows from the outside to the inside through the filter disc 15, so impurities adhere to the outside of the filter disc 15, while bubbles flow from the inside to the outside, clearing any clogged impurities. This also applies pressure to the water in the drainpipe, clearing impurities to a certain extent.

[0054] Furthermore, because the diameter of the filter disc 15 is larger than that of the outlet pipe 10, the water flow rate at the filter disc 15 is lower, thereby preventing the water flow there from flushing gas into the outlet pipe 10. Of course, in general, air can be supplied after the outlet solenoid valve 12 is closed, as air supply is intended to enhance the effectiveness of microbial treatment and does not result in water discharge. However, this is not a limitation, and simultaneous air supply and water discharge are also possible.

[0055] Specifically, the controller 13 includes a water outlet speed input module 16, a calculation module 17, a water inlet speed control module 18 and an air intake speed control module 19; the water outlet speed input module 16 signal is connected to the flow rate sensor 11; the calculation module 17 is used to calculate the water inlet speed and air intake speed based on the data of the flow rate sensor 11; the water inlet speed control module 18 signal is connected to the water inlet solenoid valve 24; the air intake speed control module 19 signal is connected to the air pump 8.

[0056] The water inlet speed is Unit: volume / time, e.g. , the intake speed is Unit: volume / time, e.g. , water outlet speed is Unit: volume / time, e.g. , set a proportional coefficient It is dimensionless and is used to control the degree of change of the air inlet velocity when the water outlet velocity changes. Assume that the initial air inlet velocity is Unit: volume / time, e.g. ;

[0057] The calculation formula of the calculation module 17 is:

[0058] .

[0059] In the above formula, the following functions are available:

[0060] First, in a stable state, make the water inlet and outlet speeds equal, that is, .

[0061] Second, control the air intake speed according to the water outlet speed:

[0062] When the water outlet speed is detected to be reduced, the air intake speed is automatically controlled to increase. The air intake speed can be expressed by the following formula and water outlet speed Relationship: ,in is the initial setting value of the water outlet speed. hour, Is a positive value, the intake speed At the initial intake speed Increase on the basis of When the air intake velocity remains at the initial value . Proportional coefficient It needs to be debugged and determined according to the actual water treatment system to achieve the purpose of reasonably adjusting the air intake speed when the water outlet speed changes, and ensuring the stable operation of the entire system.

[0063] Through this setting, the water outlet speed is used to control the water inlet speed and air intake speed:

[0064] In this device, when the water outlet solenoid valve 12 is normally opened, if the water outlet speed becomes slow, it means that the sewage treatment effect is not good (for example, the water inlet speed is too fast, or the oxygen content is too low, which affects the dissolved oxygen content in the water, the microbial metabolic environment, etc., and thus affects the sewage treatment effect), which in turn causes the filter disc 15 to be blocked by impurities.

[0065] At this point, the formula automatically controls the water inlet speed to decrease while the air inlet speed to increase. This increases the oxygen content in the water, thereby improving the sewage treatment effect. Furthermore, the increased air inlet speed allows the airflow to reversely flush the filter disc 15, thereby removing impurities from the filter disc 15. The corresponding decrease in the water inlet speed also reduces the amount of impurities entering the container 1 and prevents excessive sewage from overflowing the container 1.

[0066] Furthermore, during sewage treatment, the sewage level in the container 1 is no less than 90% of the height of the inner cavity of the container 1. Under this condition, according to the above formula, when the water outflow rate decreases to a certain level, the air inflow rate increases, and the volume of the water expands (normally by 20%-40%), which can accelerate the discharge of floating objects and the gas can push the floating objects to fall from the upper edge of the container 1.

[0067] Example 2

[0068] The difference from Implementation 1 is that the following settings are added on the basis of Implementation 1:

[0069] See Figures 1-6 The container 1 is provided with a waste discharge door 20 through an elastic member (such as a spring); an air bag 21 is connected to the top of the waste discharge door 20 through a connecting line, and the air bag 21 is located at the sewage liquid surface.

[0070] When the water level is normal, the pulling force exerted by the airbag 21 on the impurity discharge door 20 is small, close to zero. When the water level rises, the pulling force of the airbag 21 on the impurity discharge door 20 increases, overcoming the elastic force of the elastic member and opening the impurity discharge door 20, thereby automatically discharging impurities at the bottom of the container 1. This arrangement, by increasing the air supply speed, can simultaneously discharge floating impurities and bottom-precipitated impurities.

[0071] Furthermore, the filter disc 15 is rotatably connected to the water outlet pipe 10 through a rotary joint, and the filter disc 15 is connected to a rotating drive member; a toggle plate 22 is fixedly connected to the lower side of the filter disc 15, and the lower side of the toggle plate 22 is attached to the upper surface of the bottom wall of the container 1; a roller 23 is fixedly connected to the lower side of the filter disc 15, and the rolling end of the roller 23 is attached to the bottom upper surface of the container 1.

[0072] Exemplarily, the rotary drive comprises an external gear ring fixedly connected to the outer circumference of the filter disc 15. A motor drives the external gear ring via gears. This arrangement allows the filter disc 15 to rotate back and forth, moving impurities from the bottom to the impurity discharge gate 20, thereby improving impurity discharge efficiency. It also allows for a slight rotation of the wastewater, resulting in more even wastewater distribution and sufficient contact with the vertically mounted biofilm 2. For example, the biofilm 2 is mounted on the vertical portion of the branch pipe 6.

[0073] Working principle of the present invention:

[0074] During use, sewage first enters the supply pipe 4, then flows through the U-shaped connection structure into the main pipe 5. The main pipe 5 is arranged horizontally on the upper side of the container 1, while multiple branch pipes 6 connect to the main pipe 5 at one end and extend to the lower side of the container 1 at the other end. This design allows sewage to flow from the upper side of the container 1, guided by the main pipe 5 and branch pipes 6, and ultimately injected into the container 1 from the lower side. After entering the filter disc 15, the gas can pass through the disc 15 from bottom to top under the action of buoyancy, breaking the gas into fine bubbles before entering the container 1. This improves the air distribution effect and the lifting force of floating impurities. The bubbles pass through the filter disc 15 from the inside to the outside, thereby clearing the clogged impurities.

[0075] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0076] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A microbial sewage treatment device, characterized in that: include: A container (1) is provided with a microbial film (2) and a biowax supply member (3) inside the container (1). A water inlet mechanism extending into the interior of the container (1); An air intake mechanism extending into the interior of the container (1); a drainage mechanism, one side of which is located on the upper side of the bottom wall of the container (1) and the other side of which is located outside the container (1); Wherein, the water inlet mechanism comprises a supply pipe (4), and the supply pipe (4) is arranged outside the container (1); The supply pipe (4) is provided with a water inlet solenoid valve (24); the air intake mechanism comprises an air pump (8) and an air intake pipe (9), and the air intake pipe (9) is arranged inside the container (1); The drainage mechanism comprises: a water outlet pipe (10), a flow rate sensor (11), and a water outlet solenoid valve (12); the flow rate sensor (11) and the water outlet solenoid valve (12) are both arranged on the water outlet pipe (10); the flow rate sensor (11) is signal-connected to a controller (13), and the controller (13) is signal-connected to the water inlet solenoid valve (24) and the air pump (8); the inlet end of the water outlet pipe (10) is connected to a drain pan (14), the upper wall of the drain pan (14) is a filter pan (15), and the filter pan (15) is horizontally arranged in the container (1); The diameter of the filter disc (15) is 5-20 times the inner diameter of the outlet pipe (10), and the outlet end of the air inlet pipe (9) is connected to the drain disc (14); The controller (13) comprises a water outlet speed input module (16), a calculation module (17), a water inlet speed control module (18) and an air inlet speed control module (19); the water outlet speed input module (16) is connected to the flow rate sensor (11) by signal; the calculation module (17) is used to calculate the water inlet speed and the air inlet speed according to the data of the flow rate sensor (11); the water inlet speed control module (18) is connected to the water inlet solenoid valve (24) by signal; the air inlet speed control module (19) is connected to the air pump (8) by signal; wherein, assuming the water inlet speed is V in , the air intake velocity is V air The water outlet speed is V out , set a proportional coefficient k to control the degree of change of the air intake speed when the water outlet speed changes; set the initial air intake speed to V air0 ; where V out0 is the initial setting value of the water outlet speed; The calculation formula of the calculation module (17) is:

2. A microbial wastewater treatment device according to claim 1, characterized in that: The water inlet mechanism further comprises a main pipe (5) and a branch pipe (6); one end of the main pipe (5) is connected to the supply pipe (4) via a U-shaped connecting structure (7); the main pipe (5) is horizontally arranged on the upper side of the interior of the container (1); a plurality of branch pipes (6) are provided, and one end of each of the branch pipes (6) is connected to the main pipe (5); the other end of each branch pipe (6) extends to the lower side of the interior of the container (1).

3. The microbial wastewater treatment device according to claim 1, characterized in that: The discharge end of the water inlet mechanism is located below 20% of the height of the inner cavity of the container (1), and the discharge end of the air inlet mechanism is located below 20% of the height of the inner cavity of the container (1).

4. The microbial wastewater treatment device according to claim 1, characterized in that: The water outlet pipe (10) passes through the container (1), the inlet end of the water outlet pipe (10) is located inside the container (1), and the outlet end of the water outlet pipe (10) is located outside the container (1).

5. The microbial wastewater treatment device according to claim 1, characterized in that: During sewage treatment, the sewage liquid level in the container (1) is not less than 90% of the height of the inner cavity of the container (1).

6. A microbial wastewater treatment device according to claim 5, characterized in that: The container (1) is provided with a waste discharge door (20) via an elastic member; an air bag (21) is connected above the waste discharge door (20) via a connecting line, and the air bag (21) is located at the sewage liquid surface.

7. A microbial wastewater treatment device according to claim 6, characterized in that: The filter disc (15) is rotatably connected to the water outlet pipe (10) via a rotary joint, and the filter disc (15) is connected to a rotating drive member; A toggle plate (22) is fixedly connected to the lower side of the filter disc (15), and the lower side of the toggle plate (22) is in contact with the upper surface of the bottom wall of the container (1). A roller (23) is fixedly connected to the lower side of the filter disc (15), and the rolling end of the roller (23) is in contact with the upper surface of the bottom of the container (1).

Images