A smart water distribution, high torque, multi-stage waterwheel driven biological turntable system

Abstract

The present invention discloses a smart water distribution, high-torque, multi-stage waterwheel driven biological turntable system, which relates to the field of sewage treatment technology, and solves the technical problems of large land occupation, many electromechanical equipment, high energy consumption, unstable operation and complex maintenance of existing aerobic treatment process facilities for domestic sewage in villages. The key point of its technical solution is to realize the intelligent and precise control of the flow ratio of driving water and purified water, return water and outlet water through the multi-point adjustable water distribution design of the top water distribution tank and the end water distribution tank. At the same time, the top water distribution tank can combine and lift the purified water and the driving water, and the front water unit only needs to use one sewage lifting equipment, which reduces the equipment cost and energy consumption of the treatment process. The waterwheel of the water-driven biological turntable has a larger diameter than the biological turntable disc, and can provide large torque when driven at low water volume, reducing the driving energy consumption. The system solves the problems of large land occupation, many electromechanical equipment, high operating energy consumption, and complex maintenance in the existing domestic sewage treatment process in villages.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to an intelligent water distribution, high-torque, multi-stage waterwheel-driven biological turntable system. Background Art

[0002] Rural domestic sewage is generally treated in a decentralized mode with villages as the basic unit due to its large volume and wide coverage. Under this mode, the currently widely used domestic sewage treatment process in villages is to directly miniaturize the treatment process equipment of urban sewage treatment plants. The specific processes are mostly based on the activated sludge method and its improved processes, such as membrane bioreactors. The treatment system using this type of biological treatment process requires multiple energy-consuming equipment such as lifting pumps and aeration fans, and the equipment has high energy consumption. In addition, since farmers are generally equipped with household septic tanks, domestic sewage enters the village sewage collection network after primary treatment. The organic matter concentration of the mixed domestic sewage in the network is generally low when it finally enters the village sewage treatment system. In the above-mentioned activated sludge treatment method, the activated sludge system often finds it difficult to maintain a high activated sludge concentration, and it is difficult to achieve stable and continuous operation of activated sludge aerobic treatment of village domestic sewage.

[0003] Compared with the activated sludge method, the biofilm method has significant advantages in treating village domestic sewage. It has strong resistance to hydraulic shock load and pollutant shock load, and the sludge output is small. It is suitable for the water quantity and water quality characteristics of village domestic sewage and is easy to manage. In recent years, the pollutant discharge standards for village domestic sewage in various provinces and cities have been issued one after another. The biological treatment requirements for small-scale village domestic sewage focus on the removal of reducing substances such as organic matter and ammonia nitrogen, and the treatment of rural domestic sewage focuses on aerobic treatment. Therefore, there is a need for an aerobic biological treatment system for village domestic sewage based on the biofilm method to achieve the effective removal of reducing substances such as organic matter and ammonia nitrogen in village domestic sewage.

[0004] The existing aerobic biological treatment technology for domestic sewage in villages is also constantly improving. The water-driven biological turntable is more suitable for aerobic treatment of rural domestic sewage and can replace the traditional aerated activated sludge aerobic biological treatment. However, it still has many problems, such as multiple electromechanical equipment and high energy consumption under multi-water pump drive. Moreover, the sewage used for driving and purification is merged and returned without considering the difference in effluent water quality, which affects the effect of pre-anoxic treatment. In addition, the sewage flow used for driving and purification is not accurately distributed, the torque provided by the driving waterwheel for the rotation of the turntable is insufficient, the sewage in the biological turntable pool is short-circuited, and the ratio of reflux water and effluent at the end of the purified water cannot be accurately controlled. These problems seriously affect the aerobic treatment effect and the operation effect of the pre-anoxic treatment. A new type of aerobic biological treatment system is urgently needed to solve the problems of large land occupation, many electromechanical equipment, high energy consumption of water pumps and fans, unstable operation, and complex maintenance of village domestic sewage treatment facilities. Summary of the invention

[0005] The present application provides a smart water distribution, high-torque, multi-stage waterwheel-driven biological turntable system, the technical purpose of which is to optimize the configuration design and system smart water distribution, to solve the problems of existing aerobic treatment process facilities for domestic sewage in villages, such as large land occupation, large number of electromechanical equipment, high energy consumption, unstable operation and complex maintenance.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] A smart water distribution large torque multi-stage waterwheel driven biological turntable system, comprising a top water distribution tank, a water-driven biological turntable and a terminal water distribution tank which are vertically overlapped and arranged in sequence from top to bottom; the top water distribution tank comprises a top water inlet pipe, a first overflow weir plate, a first partition plate, a first partition plate slot, a driving water distribution pipe and a purified water distribution pipe, the first partition plate is installed in the first partition plate slot, and the first overflow weir plate is arranged above the first partition plate and the first partition plate slot; the water-driven biological turntable comprises a purification area, a driving area, a rotating shaft and a water distribution plate, the purification area is connected to the purified water distribution pipe, and the overflow port of the purification area is connected to the water distribution plate; the purification area is provided with a baffle plate, a biological turntable disc and a mud discharge valve, and the biological turntable disc It is connected to the rotating shaft, and the baffle plates and the biological turntable discs are interspersed. The mud discharge valve is arranged at the bottom of the purification area, and the purified water falls into the terminal water distribution tank through the water distribution plate; a waterwheel connected to the rotating shaft is arranged in the driving area, and a driving water guide pipe is arranged at the bottom of the driving area. The driving water falls from the driving water distribution pipe to the waterwheel and then to the driving water guide pipe to flow out and return to the anoxic regulating tank; the terminal water distribution tank comprises a second overflow weir plate, a second partition plate, a second partition plate slot, a purified water reflux distribution pipe and a purified water outlet distribution pipe, the second partition plate is installed in the second partition plate slot, and the second overflow weir plate is arranged above the second partition plate and the second partition plate slot; the purified return water flows out from the purified water reflux distribution pipe and returns to the anoxic regulating tank.

[0008] The beneficial effects of this application are:

[0009] (1) In the present application, the water-driven biological turntable uses water wheels and biological turntable discs of different diameters. The water wheel with a larger diameter can provide a larger rotational driving torque for the biological turntable disc when rotating, and can load more biological turntable discs, thereby enhancing the purification efficiency of the water-driven biological turntable. The large-diameter water wheel design can provide a larger rotational torque, reduce the required lifting amount of driving water, reduce the number of stages used in the water-driven biological turntable, and be more energy-efficient and require less construction investment.

[0010] (2) The water flow direction in the bio-disc is consistent with the direction of the rotating shaft. A number of baffles are added in the middle to make the sewage flow up and down, increase the water flow process, and increase the contact time between the microbial film on the bio-disc and the sewage. This can avoid the short-flow phenomenon that occurs when only the surface flow is used, and can enhance the aerobic purification efficiency of the bio-disc.

[0011] (3) The system adopts a multi-point water distribution design with top water distribution tank and terminal water distribution tank. The top water distribution tank can distribute the incoming water into driving water and purified water, and the flow ratio can be adjusted by the position of the partition plate. A water inlet is set up, and the number of required lifting water channels is reduced through intelligent adjustable water distribution, thereby reducing the demand for sewage lifting electromechanical equipment. A terminal water distribution tank is set at the end of the purified water, and the terminal water distribution tank also adopts an adjustable water distribution ratio design. The terminal water distribution tank distributes the sewage purified by the water-driven biological turntable into effluent and return water. The adjustable water distribution ratio design of the terminal water distribution tank solves the problem that the sewage return ratio is difficult to accurately control after aerobic treatment, and at the same time meets the technical requirements of setting different return ratios in different seasons. Through the multi-point water distribution design of the top water distribution tank and the terminal water distribution tank, the precise control of the flow ratio at different positions is guaranteed, and the system water flow distribution is clearer and controllable.

[0012] (4) The system adopts a multi-point reflux design in which the driving water and the purified water are returned separately. Since the driving water has not been purified by the aerobic nitrification of the biological rotary disc, the driving water does not have the ability to provide nitrate for denitrification. Therefore, the driving water is returned to the end of the front-end sewage treatment unit through a water pipe to participate in lifting and purification again. The return water distributed by the terminal water distribution tank is rich in nitrates because it has been treated by the biological rotary disc. It needs to be returned to the front end of the pre-sewage treatment unit to mix with the incoming sewage and undergo anoxic denitrification together. Therefore, the multi-point reflux design of the system solves the contradiction that the driving water and the purified water cannot be returned to the same location due to the difference in water quality. It can better guarantee the pre-denitrification and deodorization conditions and ensure the stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the intelligent water distribution, high torque, multi-stage water drive biological turntable system described in this application;

[0014] Figure 2 A top view of the top water distribution tank described in this application;

[0015] Figure 3 This is a front view of the top water distribution tank described in this application;

[0016] Figure 4 A side view of the top water distribution tank described in this application;

[0017] Figure 5 This is a top view of the water-driven biological turntable described in this application;

[0018] Figure 6 This is a front view of the water-driven biological turntable described in this application;

[0019] Figure 7 This is a side view of the water-driven biological turntable described in this application;

[0020] Figure 8 A top view of the terminal water distribution tank described in this application;

[0021] Fig. 9 This is a front view of the terminal water distribution tank described in this application;

[0022] Fig.10 This is a side view of the terminal water distribution tank described in this application;

[0023] In the figure: 1-top water distribution tank; 11-top water inlet pipe; 12-first overflow weir plate; 13-first partition plate; 14-first partition plate slot; 15-driving water distribution pipe; 16-purified water distribution pipe; 2-water drive biological turntable; 21-purification area; 211-baffle plate; 212-biological turntable disc; 213-mud discharge valve; 22-driving area; 221-water wheel; 222-driving water guide pipe; 23-rotating shaft; 24-water distribution plate; 3-end water distribution tank; 31-second overflow weir plate; 32-second partition plate; 33-second partition plate slot; 34-purified water return distribution pipe; 35-purified water outlet distribution pipe. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 10As shown, the intelligent water distribution large torque multi-stage waterwheel driven biological turntable system described in the present application includes a top water distribution tank 1, a water-driven biological turntable 2 and a terminal water distribution tank 3 which are vertically overlapped and arranged in sequence from top to bottom; the top water distribution tank 1 includes a top water inlet pipe 11, a first overflow weir plate 12, a first partition plate 13, a first partition plate slot 14, a driving water distribution pipe 15 and a purified water distribution pipe 16, the first partition plate 13 is installed in the first partition plate slot 14, and the first overflow weir plate 12 is arranged above the first partition plate 13 and the first partition plate slot 14; the water-driven biological turntable 2 includes a purification area 21, a driving area 22, a rotating shaft 23 and a water distribution plate 24, the purification area 21 is connected to the purified water distribution pipe 16, and the overflow port of the purification area 21 is connected to the water distribution plate 24; the purification area 21 is provided with a baffle plate 211, a biological turntable The plate 212 and the mud discharge valve 213, the baffle plate 211 and the biological turntable plate 212 are interlaced, and the mud discharge valve 213 is arranged at the bottom of the purification area 21; the driving area 22 is provided with a waterwheel 221 and a driving water guide pipe 222 which are interconnected, the waterwheel 221 is connected to the driving water distribution pipe 15, and the driving water guide pipe 222 leads to the anoxic regulating tank; the rotating shaft 23 runs through the purification area 21 and the driving area 22, and the center positions of the waterwheel 221 and the biological turntable plate 212 are both connected to the rotating shaft 23; the terminal water distribution tank 3 includes a second overflow weir plate 31, a second partition plate 32, a second partition plate slot 33, a purified water reflux distribution pipe 34 and a purified water outlet distribution pipe 35, the second partition plate 32 is installed in the second partition plate slot 33, and the second overflow weir plate 31 is arranged above the second partition plate 32 and the second partition plate slot 33.

[0026] As a specific embodiment, the water-driven biological turntable 2 is at least one level. When the water-driven biological turntable 2 is above one level, the driving water diversion pipe 222 of the upper water-driven biological turntable 2 is connected to the driving area 22 of the lower water-driven biological turntable 2, and the driving water diversion pipe 222 of the last water-driven biological turntable 2 leads to the anoxic regulating tank.

[0027] For ease of understanding, the following is a specific description of the workflow of this application using a two-stage water-driven biological turntable. After being treated by the pre-unit of the anoxic regulating tank, the village domestic sewage enters the top water inlet pipe 11 on one side of the top water distribution tank 1 at the top of the system. After the sewage enters the first overflow weir plate 12, it is divided into two parts, driving water and purified water, by the first partition plate 13 inserted in the first partition plate slot 14. The first partition plate 13 inserted in the first partition plate slot 14 at different positions can change the ratio of driving water and purified water. The driving water flows along the driving water distribution pipe 15 at the bottom and falls into the driving area 22 of the water-driven biological turntable 2. The waterwheel 221 in the driving area 22 drives the rotating shaft 23 to rotate under the impact and pressure of the driving water, and the rotating rotating shaft 23 synchronously drives the biological turntable disc 212 in the purification area 21 to rotate. The driving water of the driving area 22 finally flows out from the driving water guide pipe 222 at the bottom and falls into the driving area 22 of the second-stage water-driven biological turntable 2 with the same structure and size and arranged in reverse, and then drives the waterwheel 221 to rotate and then flows out from the driving water guide pipe 222 again and flows back to the corresponding position of the pre-treatment unit (i.e., the anoxic regulating tank), and the unpurified sewage is lifted and treated again.

[0028] The purified water flowing out of the purified water distribution pipe 16 at the bottom of the top water distribution pool 1 falls into one end of the purification zone 21 in the water-driven biological turntable 2 and flows along the axial direction of the rotating shaft 23 (the rotating shaft 23 crosses the purification zone 21 and the driving zone 22). Due to the action of the baffle 211, the purified water presents an up-and-down reciprocating flow in the vertical direction of the purification zone 21 and is in full contact with the rotating biological turntable disc 212. The microbial film attached to the biological turntable disc 212 repeatedly contacts the atmosphere for oxygenation during the rotation process, so that the purified water can be treated aerobically. The purified water flowing along the axial direction of the rotating shaft 23 overflows from the other end of the purification zone 21 and disperses and slides down from the water distribution plate 24, and the water falls into the purification zone 21 of the water-driven biological turntable 2 of the second stage reverse arrangement with the same structure and size. The purified water passes through the purification zone 21 and is purified again and falls from the water distribution plate 24 into the terminal water distribution pool 3.

[0029] The purified water entering the terminal water distribution tank 3 passes over the second overflow weir plate 31 and is divided into purified return water and purified effluent by the second partition plate 32 inserted in the second partition plate slot 33. The second partition plate 32 inserted in the second partition plate slot 33 at different positions can change the ratio of the purified return water and the purified effluent distributed to the purified water return distribution pipe 34 and the purified water effluent distribution pipe 35. The purified return water flows along the purified water return distribution pipe 34 at the bottom to the corresponding position of the pre-treatment unit for reflux treatment. The purified return water that has undergone aerobic treatment is rich in nitrates and is mixed with the sewage entering the pre-treatment unit for denitrification. The purified effluent flowing out of the purified water effluent distribution pipe 35 can enter subsequent ecological treatment or be directly discharged. The sewage can be effectively purified by the above-mentioned aerobic biological treatment system.

[0030] As a specific embodiment, the deflector baffles (211) are arranged at intervals at the top and bottom of the purification zone (21), and the height of the deflector baffle (211) arranged at the top of the purification zone (21) is lower than the rotating shaft (23).

[0031] The top water distribution tank 1, water-driven biological turntable 2, and terminal water distribution tank 3 of the intelligent water distribution, high-torque, multi-stage water-driven biological turntable system described in this application are arranged vertically and overlapped in sequence from top to bottom, effectively saving the space occupied by the system layout. When the system is running, after the sewage is lifted to the top, it flows by gravity in each unit from top to bottom, which can reduce the operating energy consumption. The top water distribution tank 1 is provided with a water inlet (top water inlet pipe 11), and the number of required lifting waterways is reduced through intelligent adjustable water distribution, thereby reducing the demand for sewage lifting electromechanical equipment. The waterwheel 221 and the biological turntable disc 212 are arranged with non-equal diameters. The diameter of the waterwheel 221 is larger than the diameter of the biological turntable disc 212, which can provide a larger rotational torque around the axis, and the biological turntable disc 212 on the rotating shaft 23 can load more. In addition, the purified water of the axial forward deflection has a flow state similar to push flow under the action of the deflection baffle 211, which can better contact with the biological turntable disc 212 and reduce the occurrence of short-flow phenomenon.

[0032] The water-driven biological turntable 2 is made of stainless steel throughout, and the biological turntable disc 212 is loaded with adhesive felt as a microbial membrane loading material to ensure that enough biofilm can grow on the surface of the biological turntable disc 212 to effectively purify the sewage. The driving water distributed by the top water distribution tank 1 only falls by gravity in the waterwheel area of ​​each level. Since it has not been purified, it cannot be discharged directly. It needs to be gravity-returned to the pre-treatment unit in the driving water guide pipe 222 of the last driving area 22 for further lifting and purification. The purified water distributed by the top water distribution tank 2 is aerobicly treated by the microorganisms attached to the biological turntable disc 212, and organic matter and ammonia nitrogen can be effectively removed. After being treated by the two-stage water-driven biological turntable 2, the purified water flows by gravity to the terminal water distribution tank 3. The terminal water distribution tank 3 distributes water and returns sewage to the pre-unit for treatment. The return sewage is rich in nitrates, and the return is mixed with the water from the pre-unit for anoxic denitrification and deodorization. According to the above implementation, the system can achieve reduced energy consumption, reduced equipment, low failure rate and improved stability in village sewage treatment.

[0033] The above describes the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the knowledge scope of ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A smart water distribution high torque multi-stage waterwheel driven biological turntable system, characterized in that: The invention comprises a top water distribution tank (1), a water-driven biological rotating disk (2) and a terminal water distribution tank (3) which are arranged vertically and overlapped in sequence from top to bottom; the top water distribution tank (1) comprises a top water inlet pipe (11), a first overflow weir plate (12), a first partition plate (13), a first partition plate slot (14), a driving water distribution pipe (15) and a purified water distribution pipe (16); the first partition plate (13) is installed in the first partition plate slot (14); the first overflow weir plate (12) is arranged on the first partition plate (13); and above the first partition slot (14); the water-driven biological turntable (2) comprises a purification area (21), a driving area (22), a rotating shaft (23) and a water distribution plate (24); the purification area (21) is connected to the purified water distribution pipe (16); the overflow port of the purification area (21) is connected to the water distribution plate (24); a baffle plate (211), a biological turntable disc (212) and a mud discharge valve (213) are provided in the purification area (21); the biological turntable disc (212) is connected to the rotating shaft (23); The baffle plate (211) and the biological turntable disc (212) are interlaced, and the mud discharge valve (213) is arranged at the bottom of the purification area (21). The purified water falls into the terminal water distribution tank (3) through the water distribution plate (24); a water wheel (221) connected to the rotating shaft (23) is arranged in the driving area (22), and a driving water guide pipe (222) is arranged at the bottom of the driving area (22). The driving water falls from the driving water distribution pipe (15) to the water wheel (221) and then to the driving water guide pipe (222) to flow out and flow back to An anoxic regulating tank; the terminal water distribution tank (3) comprises a second overflow weir plate (31), a second partition plate (32), a second partition plate slot (33), a purified water return water distribution pipe (34) and a purified water outlet water distribution pipe (35); the second partition plate (32) is installed in the second partition plate slot (33); the second overflow weir plate (31) is arranged above the second partition plate (32) and the second partition plate slot (33); the purified return water flows out from the purified water return water distribution pipe (34) and flows back to the anoxic regulating tank; There are a plurality of first partition slots (14), which are evenly distributed in the top water distribution tank (1), and the first partition plate (13) adjusts the ratio of driving water to purified water by the position of the first partition slots (14); sewage entering through the top water inlet pipe (11) on one side of the top water distribution tank (1) passes over the first overflow weir plate (12) and is divided into driving water and purified water by the first partition plate (13) inserted in the first partition slot (14); There are a plurality of second partition slots (33), and the second partition slots (33) are evenly distributed in the terminal water distribution tank (3). The second partition plate (32) adjusts the proportion of purified water distributed to the purified water return distribution pipe (34) and the purified water outlet distribution pipe (35) through the position of the second partition slots (33); The diameter of the water wheel (221) is greater than the diameter of the biological turntable disc (212).

2. The system according to claim 1, characterized in that The water-driven biological turntable (2) is at least one level. When the water-driven biological turntable (2) is more than one level, the driving water guide pipe (222) of the upper water-driven biological turntable (2) is connected to the driving area (22) of the lower water-driven biological turntable (2), and the driving water guide pipe (222) of the last water-driven biological turntable (2) leads to the anoxic regulating pool.

3. The system according to claim 1, characterized in that The outflow water from the driving water guide pipe (222) and the purified water return distribution pipe (34) is returned separately to different positions of the anoxic regulating tank.

4. The system according to claim 1, characterized in that The deflector baffles (211) are arranged at intervals at the top and bottom of the purification zone (21), respectively, and the height of the deflector baffle (211) arranged at the top of the purification zone (21) is lower than the rotating shaft (23).

5. The system according to claim 1, wherein: The water flow in the biological turntable disc (212) flows along the axis direction of the rotating shaft (23).

6. The system according to claim 1, wherein: The biological turntable disc (212) is provided with adhesive felt for the microbial film to adhere to.

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