A micro-powered self-oxygenating biochemical treatment device

Abstract

The present invention discloses a micro-powered self-oxygenating biochemical treatment device, which relates to the technical field of sewage treatment devices. The device comprises an aerobic biological treatment tank, wherein a plurality of self-oxygenating biochemical beds are provided within the tank. The self-oxygenating biochemical beds comprise a guide assembly fixedly disposed within the tank, a frame slidably connected to the guide assembly, a plurality of groups of high-efficiency biological carrier assemblies disposed horizontally on the frame, and a plurality of self-oxygenating capsules disposed vertically thereon. The bottom of the frame is connected to an air flotation assembly, and each air flotation assembly is connected to an inflation control assembly. This device solves the problem of low conventional aeration oxygenation efficiency and high aeration energy consumption in the prior art, which leads to high sewage treatment costs.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment devices, in particular to a micro-powered self-oxygenating biochemical treatment device. Background Art

[0002] Biofilm treatment processes have experienced rapid development in recent years. Due to their advantages, such as high treatment efficiency, excellent shock load resistance, low sludge production, small footprint, and ease of operation and management, the biofilm process is more competitive than the activated sludge process for treating medium-scale, low-concentration municipal wastewater. The biofilm process requires aerobic aeration. Conventional aerobic aeration typically uses blowers, air ducts, and microporous oxygenation devices to aerate the wastewater. While this method boasts high oxygenation efficiency, it also suffers from high equipment prices, high energy consumption, and susceptibility to damage, resulting in high maintenance costs and difficulties in operation and maintenance.

[0003] The Chinese invention patent with publication number CN110713252A discloses a high-efficiency biological aerobic reaction device and its sewage treatment method. The biological aerobic reaction device disclosed therein is cylindrical or cubic, and includes an activated sludge reaction unit located below and a biofilm reaction unit located above, and the activated sludge reaction unit is connected to the biofilm reaction unit; the biological aerobic reaction device also includes a water circulation system, which is composed of a guide pipe, a circulation pump, and a jet aeration pipe. This solution requires continuous use of an aeration fan to continuously aerate the perforated aeration pipe during sewage treatment, thereby increasing the dissolved oxygen content in the water. However, this solution has the problem of high sewage treatment costs due to high aeration energy consumption, and the problem of low aeration efficiency due to low utilization rate of the gas generated by aeration. Summary of the Invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a micro-powered self-oxygenating biochemical treatment device, which solves the problem in the prior art of low conventional aeration oxygenation efficiency and high aeration energy consumption leading to high sewage treatment costs.

[0005] The technical solution of the present invention is achieved as follows: a micro-powered self-oxygenating biochemical treatment device includes an aerobic biological treatment tank, wherein the aerobic biological treatment tank is provided with a plurality of self-oxygenating biochemical beds, wherein the self-oxygenating biochemical beds include a guide assembly fixedly arranged in the aerobic biological treatment tank, a frame slidably connected to the guide assembly, a plurality of groups of high-efficiency biological carrier assemblies and a plurality of self-oxygenating capsules are horizontally arranged on the frame, and the bottom of the frame is connected to the flotation assembly, and the flotation assembly is connected to the inflation control assembly.

[0006] Preferably, the guide assembly includes a plurality of lifting guide rods, the bottoms of the lifting guide rods are fixedly connected to the aerobic biological treatment tank, and a plurality of sliding blocks are fixedly provided on the frame and are slidably connected to the lifting guide rods through the sliding blocks.

[0007] Preferably, the air flotation component includes an air bag fixedly arranged at the bottom of the frame, the air bag is provided with an air inlet and an air outlet, the air inlet is connected to the inflation control component, and the air outlet is connected to the exhaust component.

[0008] Preferably, the inflation control component includes an air pump, which is connected to the air inlets of several airbags through inflation tubes. Solenoid valves are provided on the air inlets and outlets, and the air pump and the solenoid valves are electrically connected to the controller.

[0009] Preferably, the exhaust assembly includes several exhaust pipes fixed on the frame, one end of each exhaust pipe is connected to the air outlet, the number of exhaust pipes is consistent with the number of high-efficiency biological carrier components and is correspondingly arranged below them, and several exhaust holes are opened on the side wall of the exhaust pipe.

[0010] Preferably, the self-oxygenating capsule includes a capsule body, and a plurality of plug-in ring frames are provided on the upper and lower parts of the frame. The two ends of the capsule body are respectively plugged into the plug-in ring frames. A plurality of air chambers are vertically opened on the capsule body, and the air chambers are alternately provided with openings on both sides of the capsule body. The openings are located at the lower part of the side wall of the air chamber, and a plurality of air holes are provided on the top and / or side wall of the air chamber.

[0011] Furthermore, the lower edge of the opening is flush with the lowest point of the air chamber. The bladder is an annular PE material bladder, and the openings are respectively provided on the outer annular surface and the inner annular surface of the annular PE material bladder. The vertical cross-section of the air chamber is an isosceles trapezoid or a rectangle.

[0012] Preferably, the high-efficiency bio-carrier assembly includes a carrying rope or a carrying rod fixed to a frame, a plurality of fillers being rotatably mounted on the carrying rope or the carrying rod, and a stopper being provided on the carrying rope or the carrying rod between adjacent fillers. Furthermore, the fillers are hollow sphere fillers, strip fillers, or a combination of fillers, and the stopper is a sleeve.

[0013] Beneficial effects of the present invention:

[0014] 1: By setting up multiple groups of self-oxygenating biochemical beds in the aerobic biological treatment tank, the self-oxygenating biochemical beds of the sewage treatment unit are modularly designed, which is convenient for installation, maintenance and overhaul, making the long-term maintenance and replacement costs lower. During the overhaul, the water supply and sewage treatment will not be stopped, and the production efficiency will not be affected.

[0015] 2: An aeration control component is provided to inflate the flotation component. The flotation component generates buoyancy to float the self-oxygenating biochemical bed upward for aeration. After the flotation component is exhausted, the self-oxygenating biochemical bed sinks under gravity to release gas, thereby completing the sewage aeration process. The entire process only requires opening the aeration control component to inflate and deflate the flotation component, significantly reducing installed power and energy consumption far below that of traditional aeration equipment. The air outlet of the flotation component is further connected to the exhaust component, and the exhaust component is correspondingly located below the high-efficiency bio-carrier component. When the flotation component is exhausted, the exhausted gas passes through the exhaust component and is released onto the high-efficiency bio-carrier component. This not only completes the aeration process, increases gas utilization and water mass transfer efficiency, but also facilitates the flow of water as the gas rises, causing aged biofilm on the high-efficiency bio-carrier component to fall off.

[0016] 3: As the frame rises and sinks under the action of the flotation assembly, the self-oxygenating capsules undergo inflation and slow-release aeration, achieving alternating water / air changes within the chamber, achieving low-energy oxygenation. The slow release of gas increases the absorption rate of oxygen in the gas, improving aeration efficiency. Further released gas undergoes multiple slow-releases under the structural action of the self-oxygenating capsules, further improving aeration efficiency. Simultaneously, as the self-oxygenating biochemical bed rises and falls, it stirs and mixes the sewage, ensuring sufficient oxygen content in the aerobic pool and achieving uniform mixing. The high-efficiency biological carrier components also alternately leak out and submerge in the water, creating an aerobic / anoxic environment, more effectively degrading pollutants in the water.

[0017] 4: The lifting frequency of each self-oxygenating biochemical bed is controlled by the inflation control component. The lifting of the self-oxygenating biochemical bed can be controlled individually or in combination according to the actual water inlet and water quality requirements, and the lifting height and lifting time interval can be controlled. The control mode is flexible, intelligent and adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the planar structure of the micro-powered self-oxygenation biochemical treatment device of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the self-oxygenating biochemical bed of the present invention;

[0021] Figure 3 This is a schematic diagram of the exhaust pipe and plug-in ring frame structure of the present invention;

[0022] Figure 4 Schematic diagram of the cross-sectional structure of the air chamber of the present invention when the cross section is rectangular;

[0023] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the cross-sectional structure of the middle air chamber;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the air chamber of the present invention when the cross section is an isosceles trapezoid;

[0025] Figure 7 This is a structural schematic diagram of a partition plate provided in the air chamber of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0027] like Figure 1 、 2 As shown in Example 1, a micro-powered self-oxygenating biochemical treatment device includes an aerobic biological treatment tank. A plurality of self-oxygenating biochemical beds 2 are provided in the aerobic biological treatment tank 1. In actual application, the number of self-oxygenating biochemical beds 2 is set according to the actual area of ​​the aerobic biological treatment tank to meet the aeration needs of the entire aerobic biological treatment tank. The self-oxygenating biochemical bed 2 includes a guide assembly fixedly arranged in the aerobic biological treatment tank 1. Specifically, the guide assembly is vertically arranged and the lower end is fixedly connected to the aerobic biological treatment tank. A frame 21 is vertically slidably connected to the guide assembly. Several groups of high-efficiency biological carrier assemblies 8 and several self-oxygenating capsules 3 are horizontally arranged on the frame 21. In this embodiment, the high-efficiency biological carrier assemblies and the self-oxygenating capsules are arranged alternately, and the several self-oxygenating capsules 3 and the high-efficiency biological carrier assemblies are all arranged in a rectangular array. The bottom of the frame 11 is connected to the flotation assembly, and the flotation assemblies are all connected to the inflation control assembly. The inflation control assembly can control the inflation and deflation of the flotation assembly.

[0028] When this embodiment is used, during aerobic treatment of sewage, the initial stage of the inflation device inflates all the flotation components, causing all the self-oxygenating biochemical beds to float to the water surface along the guide components under the action of the flotation components. During the rising process, the water in the self-oxygenating capsules flows out, thereby replenishing fresh air to all the self-oxygenating capsules. At the same time, the high-efficiency biological carrier components also leave the water body, and the microorganisms attached to the high-efficiency biological carrier components fully contact with the air to absorb oxygen. At this time, the entire self-oxygenating biochemical bed is exposed to the air and fully exposed to the oxygen in the air. The flotation components are then deflated, and the self-oxygenating biochemical beds that have lost the support of the flotation components sink underwater under the action of gravity. The self-oxygenating capsules continue to release gas, and the gas released step by step oxygenates the sewage in the aerobic pool, while mixing and stirring the sewage to achieve the purpose of aerating the water body. When the gas release from the self-oxygenating capsules in a particular group of self-oxygenating biochemical beds slows or is complete, the aeration system reactivates, inflating the flotation assembly at the bottom of the bed that has already released gas, thereby lifting it and refilling the self-oxygenating capsules above it. The entire process of this device only requires energy to complete the inflation of the flotation assembly and the release of gas from the capsules. Simultaneously, the overall lifting and lowering of the self-oxygenating biochemical bed also agitates and mixes the wastewater, ensuring sufficient oxygen content in the water and promoting uniform mixing. The entire process is controlled individually and on demand by intelligent control, allowing for flexible and convenient control modes. This allows the high-efficiency biocarrier assemblies to alternately leak out and submerge in the water, creating an aerobic / anoxic environment that more effectively degrades pollutants in the water. This device achieves a green and environmentally friendly wastewater treatment process with extremely low energy consumption. It also simplifies the equipment structure, increases its service life, and reduces operational complexity and costs.

[0029] Example 2, based on Example 1, the guide assembly includes a plurality of lifting guide rods 7, and the bottom of the lifting guide rods 7 is fixedly provided with a foot plate, which is connected to the anchor bolts provided at the bottom of the aerobic biological treatment tank 1 through the foot plate. In this embodiment, each group of self-oxygenating biochemical beds is provided with four lifting guide rods, and a plurality of sliders are fixedly provided on the frame 21 and are slidably connected to the lifting guide rods 7 through the sliders. The arrangement of the sliders and the lifting guide rods can make the lifting of the frame smoother and with less resistance. In this embodiment, each group of guide assemblies includes a total of four lifting guide rods 7 distributed in a rectangular shape, and the frame and each lifting guide rod are slidably matched by two sliders. When the air flotation assembly drives the frame to float, the vertical sliding is more stable and smooth under the cooperation of the sliders and the lifting guide rods. Optionally, the tops of the four lifting guide rods are connected by a rectangular frame to improve the stability of the structure.

[0030] like Figure 2 、 3As shown, the air flotation assembly includes an airbag 4 fixed to the bottom of the frame 21. In this embodiment, the airbag 4 is an elastic airbag that expands when inflated and automatically contracts when deflated. The airbag 4 is provided with an air inlet and an air outlet. The air inlet is connected to the inflation control assembly, and the air outlet is connected to the exhaust assembly.

[0031] Among them, the inflation control component includes an air pump 5, which is connected to the air inlets of several airbags 4 through an inflation tube 6. The air inlets and outlets of the airbags 4 are provided with solenoid valves 12. The air pump 5 and all the solenoid valves 12 are electrically connected to the controller 9. The controller can control the on and off of the solenoid valves and the opening and closing of the air pumps, so that the solenoid valves of the air inlet are opened and the solenoid valves of the air outlet are closed during inflation, and the solenoid valves of the air inlet are closed and the solenoid valves of the air outlet are opened during deflation.

[0032] The exhaust assembly includes several exhaust pipes 11 fixed to the frame 21. One end of each exhaust pipe 11 is connected to the outlet of the corresponding airbag. The number of exhaust pipes 11 matches the number of high-efficiency bio-carrier assemblies 8 and is located below them. Several exhaust holes are defined in the sidewalls of the exhaust pipes 11. When the solenoid valve at the outlet of the airbag 4 is opened, the gas released from the airbag is released into the water through the exhaust holes in the exhaust pipes, thereby aerating and oxygenating the water. Furthermore, because the exhaust holes are located below the high-efficiency bio-carrier assemblies, the bubbles generated during deflation can rise and contact the high-efficiency bio-carriers, promoting the shedding of aging biofilm layers on them.

[0033] Example 3, based on Example 2, the self-oxygenating capsule 3 includes a capsule body 22, and a plurality of plug-in ring frames 40 are provided on the upper and lower parts of the frame 21, and the two ends of the capsule body 22 are respectively plugged into the plug-in ring frames 40. In this embodiment, the capsule body 22 is an annular PE material capsule body, and a circular ring is provided on the plug-in ring frame. When installed, the two ends of the capsule body are respectively plugged into the circular ring. A plurality of air chambers 23 are vertically opened on the capsule body 22, and the air chambers 23 are alternately provided with openings 41 on both sides of the capsule body 22. The openings 41 are located at the lower part of the side wall of the air chamber 23, and the top and / or side wall of the air chamber 23 are provided with a plurality of air holes 24. In this embodiment, the self-oxygenating capsule is a PE material structure, which has the characteristics of low cost, simpler structure than traditional aerobic aeration membranes, and longer service life. The lower bottom edge of the opening 41 is flush with the lowest point of the air chamber 23, and the openings 41 are respectively opened on the outer ring surface and the inner ring surface of the annular PE material capsule body.

[0034] like Figure 4 、 5 As shown, the vertical cross-section structure of the air chamber 23 is rectangular, and the air holes 24 are opened on the top and the inner and outer side walls of the rectangular air chamber. This structure can save space and set more air chambers under the condition of limited volume of the capsule.

[0035] In addition, if Figure 6As shown, as another optional solution, the vertical cross-section of the air chamber 23 is an isosceles trapezoid, the opening 41 is located on the side wall of the air chamber corresponding to the lower base of the isosceles trapezoid, and the air holes are opened on the top side wall corresponding to the waist and the side walls corresponding to the upper and lower bases. Figure 6 The figure shows the position of the air holes on the top side wall. The air holes on the side walls corresponding to the upper and lower bottoms are opened in the upper half of the side walls, so that the bottom side walls of the air chamber corresponding to the waist are set in an inclined manner to avoid sediment deposition at the bottom of the air chamber to block the air holes 24, and the top of the air chamber can be made into an inclined surface, which is conducive to the discharge of gas from the top air holes.

[0036] In this embodiment, Figure 4 、 6 As shown, the air chamber 23 is preferably a circular air chamber, that is, each layer has only one air chamber, which makes the structure simpler and easier to process. Figure 7 As shown, the side wall of the capsule can be optionally divided into several rows of air chambers by partitions 42. The rows of air chambers are circumferentially arranged at equal intervals on the side wall of the capsule. The provision of partitions can increase the strength of the structure and improve the connection stability.

[0037] When the self-oxygenating capsule rises to the surface along with the frame, driven by the inflation of the airbag 4, the water in the air chamber 23 naturally drains through the opening 41, filling the air chamber 23 with fresh air. As the airbag deflates, the frame's gravity drives the self-oxygenating capsule downward into the water. Most of the gas in the air chamber below the opening is released directly into the water through the opening as it enters the water. Simultaneously, as the gas is discharged, sewage gradually enters the air chamber through the opening. The remaining gas, as well as the gas above the opening, is slowly released through the pores in the top and side walls of the air chamber into the upper air chamber or into the water surrounding the capsule 22. The gas entering the upper air chamber is released randomly through the opening or gradually toward the upper air chamber. During this release, the sewage entering the air chamber is aerated, increasing its oxygen content. Furthermore, some of the gas released through the pores in the side walls of the air chamber creates a shearing effect as it rises to the opening of the upper air chamber, further agitating the water. As the gas from the lower air chamber is released into the sewage in the upper air chamber, it agitates the sewage and promotes the exchange of sewage between the air chamber and the sewage outside through the opening. Through multi-stage slow release, the contact time between gas and sewage is increased, the utilization rate of gas release is improved, and thus the efficiency of aeration and dissolved oxygen is improved. At the same time, the gas bubbles released through the openings and pores are smaller, increasing the utilization rate of oxygen.

[0038] Example 4, based on Example 3, the high-efficiency biological carrier assembly 8 includes a carrying rope or carrying rod 25 fixed to the frame, and a number of fillers 26 are rotatably provided on the carrying rope or carrying rod 25. A limiter 27 is provided on the carrying rope or carrying rod 25 between adjacent fillers 26. In this embodiment, the limiter is preferably a sleeve, which can limit the distance between adjacent fillers. In this embodiment, the carrying rod 25 is preferably fixed to the frame, and the fillers are rotatably provided on the carrying rod. The fillers 26 can be hollow sphere fillers, strip fillers, or combined fillers. They have the characteristics of fast biofilm formation and good biofilm development, which facilitates the formation of a rich biological community on the fillers, forming a long food chain of bacteria, algae, protozoa, metazoans, etc. The fillers are evenly distributed on the carrying rod, and the high-efficiency biological carrier assembly is evenly provided on the frame, overcoming the drawbacks of traditional sewage treatment equipment such as the carrier fillers clogging the interception device and the fillers floating. Under the collision and shearing action of the carrier in the water, the air bubbles attached to it become smaller, increasing the utilization rate of oxygen. During the process of floating up for ventilation or exhausting gas from the exhaust pipe 11, the carrier vibrates or rotates around the carrier rod under the impact of the water flow, which speeds up the mass transfer efficiency and accelerates the process of shedding of the aged biofilm on the carrier.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A micro-powered self-oxygenating biochemical treatment device, comprising an aerobic biological treatment tank (1), characterized in that: The aerobic biological treatment tank (1) is provided with a plurality of self-oxygenating biochemical beds (2), the self-oxygenating biochemical beds (2) comprising a guide assembly fixedly provided in the aerobic biological treatment tank (1), a frame (21) being slidably connected to the guide assembly, a plurality of groups of high-efficiency biological carrier assemblies (8) being arranged horizontally on the frame (21), and a plurality of self-oxygenating capsules (3) being arranged vertically, the bottom of the frame (21) being connected to an air flotation assembly, and the air flotation assemblies being connected to an inflation control assembly; the self-oxygenating biochemical beds (2) are provided with a plurality of self-oxygenating biochemical beds (2) and a plurality of self-oxygenating biochemical beds (3) being arranged vertically on the frame (21), The oxygen capsule (3) includes a capsule body (22), a plurality of plug-in ring frames (40) are provided on the upper and lower parts of the frame (21), and the two ends of the capsule body (22) are respectively plugged into the plug-in ring frames (40). A plurality of air chambers (23) are vertically opened on the capsule body (22), and the air chambers (23) are alternately provided with openings (41) on both sides of the capsule body (22), and the openings (41) are located at the lower part of the side wall of the air chamber (23). A plurality of air holes (24) are provided on the top and / or the side wall of the air chamber (23).

2. The micro-powered self-oxygenating biochemical treatment device according to claim 1, characterized in that: The guide assembly comprises a plurality of lifting guide rods (7), the bottoms of the lifting guide rods (7) are fixedly connected to the aerobic biological treatment tank (1), and a plurality of sliding blocks are fixedly provided on the frame (21) and are slidably connected to the lifting guide rods (7) via the sliding blocks.

3. The micro-powered self-oxygenating biochemical treatment device according to claim 2, characterized in that: The air flotation component comprises an air bag (4) fixedly arranged at the bottom of the frame (21), and an air inlet and an air outlet are provided on the air bag (4), the air inlet is connected to the inflation control component, and the air outlet is connected to the exhaust component.

4. The micro-powered self-oxygenating biochemical treatment device according to claim 3, characterized in that: The inflation control assembly includes an air pump (5), which is connected to the air inlets of the plurality of air bags (4) through an inflation tube (6), and electromagnetic valves (12) are provided on the air inlets and the air outlets, and the air pump (5) and the electromagnetic valves (12) are both electrically connected to the controller (9).

5. The micro-powered self-oxygenating biochemical treatment device according to claim 4, characterized in that: The exhaust assembly comprises a plurality of exhaust pipes (11) fixedly mounted on a frame (21), one end of each exhaust pipe (11) being connected to an air outlet, the number of exhaust pipes (11) being consistent with the number of high-efficiency biological carrier assemblies (8) and being correspondingly arranged below the high-efficiency biological carrier assemblies (8), and a plurality of exhaust holes being provided on the side walls of the exhaust pipes (11).

6. The micro-powered self-oxygenation biochemical treatment device according to any one of claims 1 to 5, characterized in that: The lower bottom edge of the opening (41) is flush with the lowest point of the air chamber (23); the capsule (22) is an annular PE material capsule, and the openings (41) are respectively opened on the outer annular surface and the inner annular surface of the annular PE material capsule.

7. The micro-powered self-oxygenating biochemical treatment device according to claim 6, characterized in that: The vertical cross-section of the air chamber (23) is an isosceles trapezoid or a rectangle.

8. The micro-powered self-oxygenating biochemical treatment device according to claim 7, characterized in that: The high-efficiency biological carrier assembly (8) includes a carrying rope or a carrying rod (25) fixed on a frame (21), a plurality of fillers (26) are rotatably provided on the carrying rope or the carrying rod (25), and a limiting member (27) is provided on the carrying rope or the carrying rod (25) between adjacent fillers (26).

9. The micro-powered self-oxygenating biochemical treatment device according to claim 8, characterized in that: The filler (26) is a hollow ball filler, a strip filler, or a combined filler, and the limiting member (27) is a sleeve.

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