A wastewater treatment device based on microorganisms

Abstract

This invention provides a wastewater treatment device based on microorganisms, including a wastewater treatment tank with an open upper surface. A mixing and stirring component is provided at the left end of the upper surface of the wastewater treatment tank, and an oxygen outlet is provided on the left side inside the wastewater treatment tank. A filter plate is rotatably mounted on the right end of the upper surface of the wastewater treatment tank via a rotating shaft. A first motor for driving the filter plate to rotate is provided in the middle of the rear surface of the wastewater treatment tank. The cross-section of the right side inside the wastewater treatment tank is arc-shaped, and the end of the filter plate is in contact with the right side of the wastewater treatment tank. A water pumping component is provided at the right end of the upper surface of the wastewater treatment tank. This invention can improve the mixing efficiency of wastewater and activated sludge, ensure uniform oxygen supply, and improve the filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device based on microorganisms. Background Technology

[0002] Ammonia nitrogen wastewater is a common pollutant in industrial production and urban life, mainly originating from fertilizer, coking, petrochemical, pharmaceutical, food processing, and landfill sites. Microorganisms play a crucial role in treating nitrogen-containing wastewater, converting organic nitrogen into ammonia nitrogen through ammonification, then into nitrite and nitrate nitrogen through nitrification, and finally returning to nature as nitrogen gas through denitrification. However, existing microbial wastewater treatment methods have significant shortcomings. Traditional methods directly introduce wastewater into fermentation tanks containing activated sludge. However, because the activated sludge naturally accumulates at the bottom, newly introduced wastewater can only preferentially contact the surface activated sludge, making it difficult to quickly penetrate to the bottom and fully mix with all the activated sludge. This insufficient contact leads to low microbial treatment efficiency and prolonged wastewater treatment cycles. Furthermore, traditional devices lack effective mixing systems, failing to ensure uniform contact between wastewater and activated sludge; uneven oxygen supply affects microbial activity; filtration systems are inefficient and prone to clogging; and there are problems such as poor coordination between the pumping unit and the filtration system. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a wastewater treatment device based on microorganisms that can improve the mixing efficiency of wastewater and activated sludge, ensure uniform oxygen supply, and improve filtration effect.

[0004] This utility model is implemented using the following method: a sewage treatment device based on microorganisms, including a sewage treatment tank with an open upper surface, a mixing and stirring component provided at the left end of the upper surface of the sewage treatment tank, an oxygen outlet component provided on the left side inside the sewage treatment tank, a filter plate rotatably provided at the right end of the upper surface of the sewage treatment tank via a rotating shaft, a first motor for driving the filter plate to rotate provided in the middle of the rear surface of the sewage treatment tank, the cross-section of the right side inside the sewage treatment tank is arc-shaped, the end of the filter plate is in contact with the right side of the sewage treatment tank, and a pumping component is provided at the right end of the upper surface of the sewage treatment tank.

[0005] Furthermore, a rubber scraper is provided at the end of the filter plate.

[0006] Furthermore, the mixing and stirring component includes a gantry frame, which is provided at the left end of the upper surface of the sewage treatment tank. A telescopic cylinder is embedded in the horizontal plate of the gantry frame, and a lifting plate is provided at the end of the telescopic rod of the telescopic cylinder. Multiple second motors are arranged at equal intervals on the lifting plate, and the output shafts of the second motors pass through the lifting plate. A stirring blade is provided at the end of the output shaft of the second motors. Multiple openings are provided at equal intervals on the lifting plate.

[0007] Furthermore, the oxygen outlet component includes an outlet pipe. A first support sleeve is provided on both the front and rear sides of the lower left side of the sewage treatment tank. The outlet pipe is provided inside the first support sleeve. Multiple outlet holes are provided at equal intervals on the outlet pipe. The outlet pipe is connected to an inlet pipe.

[0008] Furthermore, the pumping component includes a pump, a fixing block is provided at the middle of the right end of the upper surface of the sewage treatment tank, the pump is provided on the fixing block, the pumping end of the pump is connected to a corrugated pumping pipe, a second support sleeve is provided at the lower end of the upper surface of the filter plate, and the end of the corrugated pumping pipe passes through the second support sleeve and is fixed.

[0009] Furthermore, a vibration motor is provided on the lower surface of the filter plate.

[0010] The beneficial effects of this utility model are as follows: This utility model promotes the full mixing of sewage and activated sludge through the mixing and stirring component, achieves uniform oxygen supply through the oxygen outlet component, improves filtration efficiency by cooperating with the filter plate through the arc-shaped side, and optimizes the water pumping path through the water pumping component. It has the advantages of improving treatment efficiency, reducing clogging, and being easy to operate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the filter plate. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Please see Figure 1 and Figure 2As shown, this utility model provides an embodiment: a sewage treatment device based on microorganisms, including a sewage treatment tank 1 with an open upper surface, a mixing and stirring component 2 provided at the left end of the upper surface of the sewage treatment tank 1, an oxygen outlet component 3 provided on the left inner side of the sewage treatment tank 1, a filter plate 4 rotatably provided at the right upper end of the sewage treatment tank 1 via a rotating shaft, a first motor 5 for driving the filter plate 4 to rotate in the middle of the rear surface of the sewage treatment tank 1, the cross-section of the right inner side of the sewage treatment tank 1 is arc-shaped, the end of the filter plate 4 is in contact with the right side of the sewage treatment tank 1, and a water pumping component 6 is provided at the right end of the upper surface of the sewage treatment tank 1.

[0015] The wastewater treatment tank 1 refers to the spatial container that holds wastewater and microorganisms for reaction. It can be constructed of reinforced concrete or corrosion-resistant composite materials, and its open design facilitates equipment installation and maintenance. The mixing and stirring component 2 refers to the mechanical components that promote the mixing of wastewater and sludge, such as a gantry frame with liftable stirring blades, which breaks up sludge stratification through vertical movement. The oxygen supply component 3 refers to the aeration device that provides dissolved oxygen to microorganisms, such as a gas distribution pipe with a microporous structure, which can uniformly release bubbles to enhance mass transfer efficiency. The rotatable filter plate 4 refers to the rotating component that achieves solid-liquid separation, such as a screen structure equipped with a vibrating motor, which prevents filter pore clogging through periodic rotation. The arc-shaped tank wall refers to the curved structure that matches the movement trajectory of the filter plate, such as an arc-shaped inner wall with a radius of 500-800 mm, which can reduce residual water in the treated water. The pumping component 6 refers to the power equipment that discharges the treated water, such as a centrifugal pump equipped with flexible pipes, which can continuously pump water to adapt to changes in water level.

[0016] Specifically, the mixing agitator vertically stirs the wastewater at the left end of the tank, ensuring thorough mixing with each layer of activated sludge. The oxygen outlet 3 continuously releases oxygen through micropores, maintaining the dissolved oxygen concentration required for aerobic microbial metabolism. As the treated mixture flows to the right side of the tank, the motor drives the filter plate to rotate around its axis. The separated clear water is guided through the arc-shaped tank wall to the pumping area and discharged from the system by the pumping unit 6. A scraping component at the end of the filter plate removes adhering substances, and the vibration force generated by the vibrating motor prevents filter pore clogging. Throughout the process, dynamic stirring and rotary filtration work synergistically to effectively improve sludge contact efficiency and treatment continuity.

[0017] Compared to existing technologies, traditional fixed sedimentation tanks rely on natural infiltration, while this solution uses mechanical agitation to force mixing, allowing wastewater to penetrate the sludge layer. Existing technologies using fixed filter screens are prone to clogging; this solution's rotating filter plates combined with a vibration mechanism keep the filter pores clear. Traditional right-angled tank walls easily create dead zones for water flow; this solution's curved design, combined with the rotating filter, creates directional flow, reducing residual water in the treated water.

[0018] Through the above technical solutions, this application effectively solves the problem of insufficient contact between wastewater and bottom activated sludge, improving microbial reaction efficiency. Dynamic stirring promotes sludge layer disturbance and avoids stratification and caking; rotary filtration achieves continuous solid-liquid separation, ensuring uninterrupted operation of the treatment process; the oxygen supply system maintains dissolved oxygen concentration, ensuring the activity of nitrifying bacteria. This device is particularly suitable for the continuous treatment of high-concentration ammonia nitrogen wastewater. When treating food processing wastewater, it can shorten the hydraulic retention time by approximately 30% and reduce the frequency of filter maintenance.

[0019] Please continue reading. Figure 1 and Figure 2 As shown, in one embodiment of the present invention, a rubber scraper 41 is provided at the end of the filter plate 4.

[0020] Among them, the rubber scraper 41 refers to the elastic material component installed at the end of the filter plate and in contact with the right side of the sewage treatment tank. Specifically, it can be made of corrosion-resistant rubber material and fixed by bolts or clips. It is used to maintain flexible contact with the arc-shaped inner wall of the sewage treatment tank during the rotation of the filter plate, so as to avoid wear caused by rigid collision.

[0021] Specifically, when the filter plate is driven to rotate around the axis, the rubber scraper moves synchronously with the end of the filter plate, and its elastic properties ensure that it always conforms to the arc-shaped right side of the sewage treatment tank. When the filter plate is in the closed state, the rubber scraper fills the gap between the end of the filter plate and the tank body through its own deformation, preventing unfiltered liquid from leaking out; during the opening process of the filter plate, the rubber scraper slides along the arc-shaped inner wall, scraping off the residues attached to the tank wall, avoiding the accumulation of impurities that would affect the subsequent filtration efficiency.

[0022] Compared to existing technologies, traditional wastewater treatment devices often use a rigid sealing structure at the contact point between the filter plate and the tank body. Over long-term operation, this can easily lead to wear and tear, resulting in gaps, liquid leakage, or impurity residue. This solution achieves dynamic sealing through an elastic rubber scraper, which adapts to the positional changes of the filter plate during rotation, reduces mechanical wear, and extends the device's service life.

[0023] Through the above technical solution, this application effectively solves the leakage problem caused by poor contact between the filter plate and the pool body. At the same time, by scraping off the residue on the pool wall to keep the filter channel unobstructed, the risk of blockage caused by the accumulation of impurities is reduced, thereby improving the continuous operation stability of the sewage treatment system and reducing the maintenance frequency.

[0024] Please continue reading. Figure 1As shown, in one embodiment of the present invention, the mixing and stirring component 2 includes a gantry frame 21. The gantry frame 21 is provided at the left end of the upper surface of the sewage treatment tank 1. A telescopic cylinder 22 is embedded in the horizontal plate of the gantry frame 21. A lifting plate 23 is provided at the end of the telescopic rod of the telescopic cylinder 22. A plurality of second motors 24 are arranged at equal intervals on the lifting plate 23. The output shaft of the second motor 24 passes through the lifting plate 23. A stirring blade 25 is provided at the end of the output shaft of the second motor 24. A plurality of openings 26 are opened at equal intervals on the lifting plate 23.

[0025] Among them, the gantry 21 refers to the frame structure installed above the left end of the sewage treatment tank, which can be formed by welding metal profiles, and is used to support the telescopic cylinder and the lifting plate. The telescopic cylinder 22 refers to the linear drive device with adjustable lifting stroke, which can be implemented using a pneumatic cylinder or a hydraulic cylinder, and is used to control the vertical movement of the lifting plate. The second motor 24 refers to the power source that drives the stirring blades to rotate, which can be implemented using a waterproof AC motor, and is used to drive the stirring blades to mix the sewage. The stirring blades 25 refer to components with a rotating stirring function, which can be propeller-type or paddle-type structures, and are used to increase the contact area between sewage and microorganisms. The opening refers to the through hole penetrating the lifting plate, which can be round or square holes, and is used to reduce the resistance when the lifting plate moves in the liquid.

[0026] Specifically, the gantry frame is fixed to the left end of the wastewater treatment tank. A telescopic cylinder is embedded within the horizontal plate of the gantry frame, and the lifting plate moves up and down via the telescopic rod of the cylinder. A second motor is equidistantly distributed on the lifting plate, with its output shaft extending downwards through the lifting plate and connecting to the stirring blades. When the second motor starts, the stirring blades rotate in the wastewater, and the stirring depth is adjusted by the vertical movement of the lifting plate. Openings are evenly spaced on the lifting plate, allowing liquid to flow through and reducing resistance. Thus, the stirring blades can cover different depths of wastewater during the lifting process, ensuring thorough mixing of the wastewater and activated sludge.

[0027] Compared to existing technologies, traditional mixing devices typically use fixed agitators, which can only mix the surface layer of wastewater and cannot adjust the mixing depth. This solution uses a lifting plate and a telescopic cylinder to allow the mixing blades to penetrate into different layers of wastewater. Furthermore, the distribution of multiple sets of mixing blades enhances mixing uniformity and solves the problem of low wastewater infiltration efficiency.

[0028] Through the above technical solution, this application realizes multi-level mixing of sewage and activated sludge, promotes full contact between microorganisms and pollutants, shortens the time required for ammonia nitrogen conversion, and improves sewage treatment efficiency.

[0029] Please continue reading. Figure 1As shown, in one embodiment of the present invention, the oxygen outlet component 3 includes an outlet pipe 31. A first support sleeve 32 is provided on both the front and rear sides of the lower left side of the sewage treatment tank 1. The outlet pipe 31 is provided inside the first support sleeve 32. A plurality of outlet holes 33 are provided at equal intervals on the outlet pipe 31. The outlet pipe 31 is connected to an inlet pipe 34.

[0030] The first support sleeve 32 refers to a tubular support structure fixed to the inner wall of the sewage treatment tank. It can be made of stainless steel or engineering plastic and is used to fix the position of the vent pipe and prevent it from shifting.

[0031] The outlet pipe 31 refers to the pipeline structure for transporting oxygen. Specifically, it can be a corrosion-resistant metal pipe or a polymer material pipe, used to uniformly transport oxygen to the activated sludge area of ​​the sewage treatment pond.

[0032] The vent 33 refers to the exhaust openings distributed along the axial direction of the vent pipe. Specifically, they can be formed by laser drilling or mechanical stamping to achieve uniform diffusion of oxygen in the activated sludge layer.

[0033] The inlet pipe 34 refers to the air supply channel that connects the external air source and the outlet pipe. Specifically, it can be connected by a flange or a threaded connection and is used to continuously supply oxygen to the outlet pipe.

[0034] Specifically, oxygen enters the outlet pipe through the inlet pipe and is then evenly discharged from equidistantly distributed outlet holes. The first support sleeve fixes the outlet pipe to the lower left side of the wastewater treatment tank, ensuring that the oxygen release point is close to the bottom layer of activated sludge. As wastewater flows through this area, oxygen continuously permeates to all layers of activated sludge through the outlet holes, promoting the nitrification process of the bottom microorganisms.

[0035] Compared to existing technologies, traditional wastewater treatment devices typically use single aeration ports or fixed aeration pipes, which can easily lead to uneven oxygen distribution. This solution, by installing aeration pipes with equidistant air outlets and symmetrically arranged first support sleeves, ensures that oxygen can evenly cover the vertical profile of the activated sludge, effectively solving the problem of insufficient oxygen supply to the bottom microorganisms.

[0036] Through the above technical solution, this application achieves efficient oxygen supply to the microorganisms at the bottom of the activated sludge, enhances the nitrification reaction rate, and reduces the difficulty of equipment maintenance through the modular gas outlet pipe structure design.

[0037] Please continue reading. Figure 1 and Figure 2As shown, in one embodiment of the present invention, the pumping component 6 includes a pumping pump 61. A fixing block 62 is provided at the middle of the right end of the upper surface of the sewage treatment tank 1. The pumping pump 61 is provided on the fixing block 62. A corrugated pumping pipe 63 is connected to the pumping end of the pumping pump 61. A second support sleeve 64 is provided at the lower end of the upper surface of the filter plate 4. The end of the corrugated pumping pipe 63 passes through the second support sleeve 64 and is fixed.

[0038] Among them, the water pump 61 refers to the power device used to pump out the treated water, which can be implemented by a centrifugal pump or a submersible pump. Its function is to discharge the treated water from the sewage treatment pond.

[0039] Among them, the fixing block 62 refers to the support structure used to fix the water pump. Specifically, it can be fixed to the surface of the sewage treatment tank by welding or bolt connection, and its material can be steel or concrete.

[0040] Among them, the corrugated water pumping pipe 63 refers to a pipe with elasticity, which can be made of stainless steel corrugated pipe or rubber corrugated pipe. Its corrugated structure allows the pipe to deform when the filter plate rotates.

[0041] The second support sleeve 64 refers to the tubular structure used to fix the end of the corrugated water pumping pipe. Specifically, it can be a metal sleeve with internal threads, which can fix the corrugated water pumping pipe by thread connection or snap fastener to prevent the pipe from shaking during the pumping process.

[0042] Specifically, the water pump is stably installed at the right end of the sewage treatment tank via a fixing block. One end of the corrugated water pump pipe is connected to the pump's suction end, and the other end extends through the second support sleeve to below the filter plate. When the filter plate rotates with the shaft to adjust its angle, the corrugated water pump pipe can freely extend and retract within the second support sleeve, preventing the pipe from twisting or falling off due to filter plate displacement. The second support sleeve limits the end of the corrugated water pump pipe, ensuring that the pipe remains in contact with the treated water during pumping and preventing air from entering and affecting pumping efficiency.

[0043] Compared to existing technologies, where fixed pumping pipes are used, the rotation of the filter plate can easily lead to leaks or breakage at the pipe connections. This application, however, utilizes a corrugated pumping pipe in conjunction with a second support sleeve, allowing the pipe to adapt to the dynamic displacement of the filter plate while maintaining a stable pumping path. Furthermore, the second support sleeve secures the end of the corrugated pumping pipe, preventing pipe displacement caused by water flow impact during pumping.

[0044] Through the above technical solution, this application solves the problem of water pumping pipe falling off or leaking due to the rotation of the filter plate in the prior art, ensuring the continuity and stability of water pumping operation in the sewage treatment process, while reducing downtime caused by pipeline maintenance and improving the overall treatment efficiency.

[0045] Please continue reading. Figure 2 As shown in one embodiment of the present invention, a vibration motor 42 is provided on the lower surface of the filter plate 4.

[0046] The vibration motor 42 refers to a drive device capable of generating periodic mechanical vibration. Specifically, it can be an electric vibrator, which is bolted to the lower surface of the filter plate. When energized, it drives the filter plate to generate high-frequency micro-amplitude vibration. The filter plate refers to a plate-shaped filter structure with uniformly distributed pores. Specifically, it can be made of stainless steel perforated plate or engineering plastic grid, and its pore size can be selected according to the particle size range of suspended solids in the wastewater being treated.

[0047] Specifically, when the filter plate performs solid-liquid separation in the wastewater treatment tank, the vibrating motor is energized and generates a vibration force perpendicular to the filter plate surface. This vibration force is transmitted to the layer of suspended solids accumulated on the filter plate surface, disrupting the adhesion between the solid particles and the filter plate pores. This causes the solid particles clogging the pores to detach and re-enter the wastewater mixture. Simultaneously, the minute displacement generated by the vibration accelerates the permeation rate of the liquid through the filter plate pores, preventing a drop in osmotic pressure due to an excessively thick solid layer.

[0048] Compared to existing technologies, traditional fixed filter plates are prone to forming a dense filter cake layer due to the accumulation of solid particles during long-term operation, resulting in a significant decrease in filtration efficiency over time. This solution actively intervenes in the filtration process through mechanical vibration, continuously disrupting the conditions for filter cake layer formation and maintaining the effective permeability area of ​​the pores.

[0049] Through the above technical solution, this application can effectively alleviate the pore blockage of the filter plate, maintain a stable solid-liquid separation efficiency, reduce the frequency of manual cleaning of the filter plate, and accelerate the flow rate of the treated water through the filter plate into the next treatment stage.

[0050] The water pump, vibrating motor, telescopic cylinder, and motor in this utility model are all existing technologies, which are already clearly understood by those skilled in the art, and will not be described in detail here.

[0051] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A wastewater treatment device based on microorganisms, characterized in that: The system includes a wastewater treatment tank with an open upper surface. A mixing and stirring component is provided on the left end of the upper surface of the wastewater treatment tank. An oxygen outlet is provided on the left side inside the wastewater treatment tank. A filter plate is rotatably mounted on the right end of the upper surface of the wastewater treatment tank via a rotating shaft. A first motor for driving the filter plate to rotate is provided in the middle of the rear surface of the wastewater treatment tank. The cross-section of the right side inside the wastewater treatment tank is arc-shaped. The end of the filter plate is in contact with the right side of the wastewater treatment tank. A water pumping component is provided on the right end of the upper surface of the wastewater treatment tank.

2. The wastewater treatment device based on microorganisms according to claim 1, characterized in that: A rubber scraper is provided at the end of the filter plate.

3. The wastewater treatment device based on microorganisms according to claim 1, characterized in that: The mixing and stirring component includes a gantry frame. The gantry frame is provided at the left end of the upper surface of the sewage treatment tank. A telescopic cylinder is embedded in the horizontal plate of the gantry frame. A lifting plate is provided at the end of the telescopic rod of the telescopic cylinder. Multiple second motors are arranged at equal intervals on the lifting plate. The output shaft of the second motor passes through the lifting plate. A stirring blade is provided at the end of the output shaft of the second motor. Multiple openings are provided at equal intervals on the lifting plate.

4. The wastewater treatment device based on microorganisms according to claim 1, characterized in that: The oxygen outlet component includes an outlet pipe. A first support sleeve is provided on both the front and rear sides of the lower left side of the sewage treatment tank. The outlet pipe is provided inside the first support sleeve. Multiple outlet holes are provided at equal intervals on the outlet pipe. The outlet pipe is connected to an inlet pipe.

5. A wastewater treatment device based on microorganisms according to claim 1, characterized in that: The pumping component includes a pump. A fixing block is provided at the middle of the right end of the upper surface of the sewage treatment tank. The pump is mounted on the fixing block. A corrugated pumping pipe is connected to the pumping end. A second support sleeve is provided at the lower end of the upper surface of the filter plate. The end of the corrugated pumping pipe passes through the second support sleeve and is fixed.

6. A wastewater treatment device based on microorganisms according to claim 1, characterized in that: A vibration motor is installed on the lower surface of the filter plate.

Images