Efficient biochemical reaction tank for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an efficient biochemical reaction tank for sewage treatment, which comprises a reaction tank, the stirring mechanism comprises a stirring shaft rotationally connected to the upper end of the inner wall of the reaction tank; according to the device, a stirring shaft is driven, so that a scraping plate frame, a bracket and two aeration pipes rotate in a reaction tank, the scraping plate frame scrapes sludge attached to the interior of the reaction tank, and external air is compressed by a compressor and is respectively conveyed to the two aeration pipes through an air supply pipe and a through groove; compared with an existing reaction tank which is not uniform in air distribution, the two aeration pipes are rotated in the manner, so that the air distribution in the reaction tank is uniform, the sludge in the reaction tank is in full contact with sewage, and the sludge in the reaction tank is further subjected to aeration in the middle of the reaction tank, so that the sludge in the reaction tank is further subjected to aeration in the middle of the reaction tank. The sewage treatment effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a high-efficiency biochemical reaction tank for wastewater treatment. Background Technology

[0002] The high-efficiency biochemical reactor is one of the core devices in the sewage treatment system. Its main principle is to use the metabolism of microorganisms to decompose organic matter in sewage into carbon dioxide and water, while converting nutrients such as nitrogen and phosphorus into harmless substances, thereby achieving the purpose of purifying sewage.

[0003] According to the Chinese patent "A Reaction Tank for Ecological Purification Wastewater Treatment" (authorization announcement number CN217600458U), the sludge adhering to the inner wall of the reaction tank is scraped off by a scraper. During the process of blowing off the sludge adhering to the scraper by the aeration cleaning component, outside air can be introduced into the reaction tank at the same time, which improves the aeration effect of the reaction tank and thus improves the wastewater treatment efficiency.

[0004] In the aforementioned application, because the scraper is located near the inner wall of the reaction tank, the aeration cleaning component tends to have more air near the inner wall of the reaction tank during aeration, while having less air in the inner center of the reaction tank. This results in uneven air distribution within the reaction tank, thus affecting the wastewater treatment effect.

[0005] Therefore, a high-efficiency biochemical reaction tank for wastewater treatment is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency biochemical reaction tank for wastewater treatment to solve the above-mentioned problems and improve the problem of uneven air distribution inside the reaction tank.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a high-efficiency biochemical reaction tank for sewage treatment, comprising: a reaction tank; an agitation mechanism, the agitation mechanism including a stirring shaft rotatably connected to the upper end of the inner wall of the reaction tank, a scraper frame and a support fixedly connected to the surface of the stirring shaft, one side of the scraper frame contacting the inner wall of the reaction tank, a through groove opened in the inner wall of the stirring shaft, an aeration pipe fixedly connected to the surface of both the scraper frame and the support, one end of the aeration pipe fixedly connected to the inner wall of the through groove, a compressor fixedly connected to the top of the reaction tank, one end of the compressor connected to an air supply pipe, and the other end of the air supply pipe penetrating the stirring shaft and extending into the interior of the through groove. By driving the stirring shaft, the scraper frame, support, and two aeration pipes rotate inside the reaction tank. The scraper frame scrapes away the sludge attached to the inside of the reaction tank. Outside air is compressed by the compressor and delivered to the two aeration pipes through the air supply pipe and the passageway. One aeration pipe blows away the sludge attached to the scraper frame, while the other aeration pipe aerates the middle of the reaction tank. This ensures that the air inside the reaction tank is evenly distributed, allowing the sludge and wastewater to come into full contact, thus guaranteeing the effectiveness of wastewater treatment.

[0008] Preferably, the inner wall of the support is rotatably connected to a rotary shaft, and several inclined plates are fixedly connected to the surface of the rotary shaft. Through the rotary shaft and the inclined plates, the interior of the reaction tank is agitated, increasing the fluidity of sludge and wastewater within the reaction tank, thereby ensuring sufficient contact between the sludge and wastewater.

[0009] Preferably, a first gear is fixedly connected to the upper surface of the stirring shaft, a second gear is rotatably connected to the top of the reaction tank, the first gear and the second gear mesh, a motor is fixedly connected to the top of the second gear, a protective frame is fixedly connected to the top of the reaction tank, the top of the motor is fixedly connected to the inner top wall of the protective frame, and one end of the air supply pipe penetrates and extends to the inner wall of the protective frame.

[0010] Preferably, the inner wall of the aeration pipe is fixedly connected with equally spaced filter screens, and the surface of the aeration pipe is embedded with equally spaced one-way valves. The one-way valves are used to prevent sewage from the reaction tank from flowing into the interior of the aeration pipe. The filter screens prevent sludge from entering the inner wall of the aeration pipe, and the one-way valves prevent sewage from flowing into the channel through the aeration pipe.

[0011] Preferably, a ball bearing is rotatably connected to the bottom end of the stirring shaft, and the surface of the ball bearing is rotatably connected to the inner bottom wall of the reaction tank. The ball bearing provides support for the stirring shaft, preventing the bottom end of the stirring shaft from being suspended in mid-air.

[0012] Preferably, a rubber cover is fixedly connected to the lower end of the surface of the stirring shaft, and the bottom end of the rubber cover contacts the inner bottom wall of the reaction tank. The rubber cover protects the ball bearings and prevents sludge from adhering to the surface of the ball bearings.

[0013] Preferably, the surface of the aeration pipe is fixedly connected with equally spaced reinforcing blocks. These reinforcing blocks enhance the overall strength of the aeration pipe, ensuring that its surface will not be damaged when the aeration pipe rotates within the reaction tank.

[0014] The beneficial effects of this utility model are:

[0015] 1. By driving the stirring shaft, the scraper frame, support, and two aeration pipes rotate inside the reaction tank. The scraper frame scrapes off the sludge attached to the inside of the reaction tank. The compressor compresses outside air and delivers it to the two aeration pipes through the air supply pipe and the channel. One aeration pipe blows away the sludge attached to the scraper frame, while the other aeration pipe aerates the middle of the reaction tank. Compared with the uneven air distribution in existing reaction tanks, this method rotates the two aeration pipes, thereby making the air distribution inside the reaction tank more uniform. This ensures that the sludge and sewage inside the reaction tank are in full contact, thus guaranteeing the effectiveness of sewage treatment.

[0016] 2. By moving the shaft and the inclined plate, the inside of the reaction tank is stirred, increasing the fluidity of sludge and sewage in the reaction tank, thereby ensuring that the sludge and sewage are in full contact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the protective frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the stirring mechanism of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] In the diagram: 1. Reaction tank; 2. Agitator; 21. Stirring shaft; 22. Scraper frame; 23. Support; 24. Aeration pipe; 25. Compressor; 26. Air supply pipe; 27. Through groove; 28. Reinforcing block; 29. ​​Actuating shaft; 210. Inclined plate; 211. First gear; 212. Second gear; 213. Motor; 214. Protective frame; 215. Filter screen; 216. One-way valve; 217. Ball bearing; 218. Rubber cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-4 As shown, a high-efficiency biochemical reaction tank for wastewater treatment includes: a reaction tank 1; an agitation mechanism 2, the agitation mechanism 2 including a stirring shaft 21 rotatably connected to the upper end of the inner wall of the reaction tank 1, a scraper frame 22 and a support 23 fixedly connected to the surface of the stirring shaft 21, one side of the scraper frame 22 contacting the inner wall of the reaction tank 1, a through groove 27 opened in the inner wall of the stirring shaft 21, an aeration pipe 24 fixedly connected to the surface of both the scraper frame 22 and the support 23, one end of the aeration pipe 24 fixedly connected to the inner wall of the through groove 27, a compressor 25 fixedly connected to the top of the reaction tank 1, one end of the compressor 25 connected to an air supply pipe 26, and the other end of the air supply pipe 26 passing through the stirring shaft 21 and extending into the interior of the through groove 27.

[0024] A sealed bearing is fixedly connected to the upper end of the inner wall of the stirring shaft 21, and the inner edge of the sealed bearing is fixedly connected to the surface of the air supply pipe 26.

[0025] The inner wall of reaction tank 1 is connected to an inlet pipe, an outlet pipe, a water inlet pipe, and a drain pipe. The inlet pipe, outlet pipe, water inlet pipe, and drain pipe are connected to their respective pipes by bolts.

[0026] When wastewater needs treatment, a certain amount of activated sludge is introduced into the reaction tank 1 through the inlet pipe, and the externally treated wastewater is introduced into the reaction tank 1 through the inlet pipe. At this stage, the wastewater contains various organic matter, nitrogen, phosphorus and other pollutants, which will become the "food" for subsequent microbial metabolism. A certain amount of acid-base regulator is poured into the reaction tank 1. At this time, the stirring shaft 21 is driven to rotate. The rotating stirring shaft 21 drives the scraper frame 22, the support 23 and the two aeration pipes 24 to rotate, thereby stirring the reaction tank 1. The rotating scraper frame 22 scrapes off the activated sludge attached to the inside of the reaction tank 1. At this time, the compressor 25 is manually turned on. The compressor 25 continuously draws in outside air, compresses it and delivers it to the through channel 27 through the air supply pipe 26. The compressed gas in the through channel 27 is distributed... The air flows into the two aeration pipes 24. One aeration pipe 24 blows the surface of the scraper frame 22, causing air to flow near the inner wall of the reaction tank 1. The other aeration pipe 24 rotates to aerate the middle of the reaction tank 1, thereby allowing the sewage and activated sludge inside the reaction tank 1 to flow fully, ensuring sufficient contact between sewage, activated sludge, and oxygen, and ensuring uniform air distribution inside the reaction tank 1. This provides the aerobic microorganisms in the activated sludge with the oxygen necessary for survival and metabolism. Because activated sludge contains a large number of microorganisms, mainly including bacteria, fungi, protozoa, and metazoa, these microorganisms use organic matter in the sewage as a carbon source and energy source to carry out growth, reproduction, and metabolic activities. Under aerobic conditions, aerobic microorganisms decompose organic matter into carbon dioxide and water, while synthesizing new cell material. For example, for carbohydrates, microorganisms oxidize and decompose them into carbon dioxide and water through a series of enzymatic reactions; for nitrogenous organic matter, it is first decomposed into ammonia nitrogen, and then further converted into nitrite and nitrate under the action of nitrifying bacteria. After a period of reaction, the mixed liquor in reaction tank 1 containing activated sludge and treated wastewater flows into the sedimentation tank of the next stage through the pipe. Flocculants can be added to the sedimentation tank to promote sludge coagulation and sedimentation. In the sedimentation tank, due to the gravity of the sludge, the activated sludge will gradually settle to the bottom of the tank, while the treated water is discharged from the top of the sedimentation tank. The sludge settled at the bottom of the sedimentation tank is sent back to the front end of reaction tank 1 through the sludge return pipe. The purpose of sludge return is to maintain the concentration of activated sludge in the reaction, so that microorganisms can continuously and effectively decompose pollutants in wastewater. The return ratio is usually adjusted according to the operation of reaction tank 1 and treatment requirements.

[0027] As microorganisms grow and multiply, a certain amount of excess sludge will be generated in reaction tank 1. The excess sludge will be discharged to a designated location through the sewage pipe for further treatment and disposal, such as sludge thickening, dewatering, and anaerobic digestion, in order to reduce the volume of sludge and its impact on the environment.

[0028] like Figure 3As shown, a toggle shaft 29 is rotatably connected to the inner wall of the support 23, and several inclined plates 210 are fixedly connected to the surface of the toggle shaft 29. A first gear 211 is fixedly connected to the upper surface of the stirring shaft 21, and a second gear 212 is rotatably connected to the top of the reaction tank 1. The first gear 211 and the second gear 212 mesh with each other. A motor 213 is fixedly connected to the top of the second gear 212. A protective frame 214 is fixedly connected to the top of the reaction tank 1. The top of the motor 213 is fixedly connected to the inner top wall of the protective frame 214. One end of the air supply pipe 26 passes through and extends to the inner wall of the protective frame 214. A ball bearing 217 is rotatably connected to the bottom end of the stirring shaft 21. The surface of the ball bearing 217 is rotatably connected to the inner bottom wall of the reaction tank 1. A rubber cover 218 is fixedly connected to the lower surface of the stirring shaft 21. The bottom end of the rubber cover 218 contacts the inner bottom wall of the reaction tank 1. Reinforcing blocks 28 are evenly distributed and fixedly connected to the surface of the aeration pipe 24.

[0029] The motor 213 is automatically turned on. The output shaft of the motor 213 rotates, which drives the second gear 212 to rotate. The rotation of the second gear 212 drives the first gear 211 to rotate. The rotation of the first gear 211 drives the stirring shaft 21 to rotate. The rotation of the stirring shaft 21 drives the ball bearing 217 to roll on the bottom wall of the reaction tank 1, which in turn drives the rubber cover 218 to rotate on the bottom wall of the reaction tank 1.

[0030] like Figure 2 and Figure 4 As shown, the inner wall of the aeration pipe 24 is fixedly connected with equally arranged filter screens 215, and the surface of the aeration pipe 24 is embedded with equally arranged one-way valves 216. The one-way valves 216 are used to prevent sewage from the inside of the reaction tank 1 from flowing into the interior of the aeration pipe 24. The stirring shaft 21, scraper frame 22, support 23, filter screens 215, reinforcing block 28, aeration pipe 24, actuating shaft 29 and inclined plate 210 are all 304 stainless steel components.

[0031] In use, this invention automatically activates motor 213. The output shaft of motor 213 rotates, driving the second gear 212 to rotate. The second gear 212 then drives the first gear 211 to rotate, which in turn drives the stirring shaft 21 to rotate. The rotating stirring shaft 21 drives the scraper frame 22, the support 23, and the two aeration pipes 24 to rotate. The rotation of the support 23 drives the actuating shaft 29 and the inclined plate 210 to rotate. The actuating shaft 29 rotates itself as it pushes the sewage and sludge inside the reaction tank 1, thereby fully purifying the sewage and sludge inside the reaction tank 1. The rotating scraper frame 22 scrapes away the activated sludge attached to the inside of the reaction tank 1. At this time, the compressor 25 is manually turned on. The compressor 25 continuously draws in outside air, compresses it, and delivers it to the through channel 27 through the air supply pipe 26. The compressed gas in the through channel 27 flows to two aeration pipes 24. One aeration pipe 24 blows the surface of the scraper frame 22, causing the air to flow near the inner wall of the reaction tank 1. The other aeration pipe 24 aerates the middle part of the reaction tank 1 while rotating, thereby allowing the sewage and activated sludge inside the reaction tank 1 to flow fully.

[0032] It should be noted that the reaction tank 1, stirring shaft 21, scraper frame 22, aeration pipe 24, compressor 25, air supply pipe 26, motor 213, one-way valve 216 and sealed bearing mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the compressor 25 and motor 213 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency biochemical reaction tank for sewage treatment, characterized in that, include: A reaction tank (1) and an agitation mechanism (2) are included. The agitation mechanism (2) includes a stirring shaft (21) rotatably connected to the upper end of the inner wall of the reaction tank (1). A scraper frame (22) and a support (23) are fixedly connected to the surface of the stirring shaft (21). One side of the scraper frame (22) contacts the inner wall of the reaction tank (1). A through groove (27) is opened on the inner wall of the stirring shaft (21). An aeration pipe (24) is fixedly connected to the surface of the scraper frame (22) and the support (23). One end of the aeration pipe (24) is fixedly connected to the inner wall of the through groove (27). A compressor (25) is fixedly connected to the top of the reaction tank (1). One end of the compressor (25) is connected to an air supply pipe (26). The other end of the air supply pipe (26) passes through the stirring shaft (21) and extends into the interior of the through groove (27).

2. The high-efficiency biochemical reaction tank for sewage treatment according to claim 1, characterized in that: The inner wall of the bracket (23) is rotatably connected to a toggle shaft (29), and a number of inclined plates (210) are fixedly connected to the surface of the toggle shaft (29).

3. The high-efficiency biochemical reaction tank for sewage treatment according to claim 1, characterized in that: A first gear (211) is fixedly connected to the upper surface of the stirring shaft (21), and a second gear (212) is rotatably connected to the top of the reaction tank (1). The first gear (211) meshes with the second gear (212), and a motor (213) is fixedly connected to the top of the second gear (212). A protective frame (214) is fixedly connected to the top of the reaction tank (1), and the top of the motor (213) is fixedly connected to the inner top wall of the protective frame (214). One end of the gas supply pipe (26) penetrates through and extends to the inner wall of the protective frame (214).

4. The high-efficiency biochemical reaction tank for sewage treatment according to claim 1, characterized in that: The inner wall of the aeration pipe (24) is fixedly connected with a filter screen (215) arranged in equal rows. The surface of the aeration pipe (24) is embedded with a one-way valve (216) arranged in equal rows. The one-way valve (216) is used to prevent sewage from the inside of the reaction tank (1) from flowing into the inside of the aeration pipe (24).

5. The high-efficiency biochemical reaction pool for sewage treatment according to claim 1, characterized in that: The bottom end of the stirring shaft (21) is connected to a ball bearing (217), and the surface of the ball bearing (217) is connected to the inner bottom wall of the reaction tank (1).

6. The high-efficiency biochemical reaction pool for sewage treatment according to claim 1, characterized in that: A rubber cover (218) is fixedly connected to the lower end of the surface of the stirring shaft (21), and the bottom end of the rubber cover (218) contacts the inner bottom wall of the reaction tank (1).

7. The high-efficiency biochemical reaction pool for sewage treatment according to claim 1, characterized in that: The surface of the aeration pipe (24) is fixedly connected with equally arranged reinforcing blocks (28).

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