Biochemical reaction process partitioning aeration energy-saving control device

Abstract

The application discloses a biochemical reaction progress partitioned aeration energy-saving control device, which comprises an aeration reaction tank and a micro-nano bubble generating and transition water tank, a plurality of guide plates with notches are fixed to the inner wall of the micro-nano bubble generating and transition water tank, and the notches and the inner wall form S-shaped water flow channels in cooperation. A through slot is formed on the outer side of the guide plate, and a micro-nano bubble generating device is fixed to the inner side surface of the guide plate. A through opening is formed on the outer side of the water tank at the end of the S-shaped water flow channels, a square pipe is fixed to the inner side surface of the water tank, one end of the square pipe is fixedly connected with the aeration reaction tank, and a rubber valve is mounted on the inner side of the square pipe. The device is provided with stirring and aeration components, can fully stir sewage in the aeration reaction tank, can achieve good aeration effect without a large number of aeration pipes and nozzles, and can reduce energy consumption. Meanwhile, the device adopts the mode of partitioned micro-nano bubble generation, nano bubble transition and aeration stirring, effectively avoids sludge floating caused by a large number of micro-bubbles generated in situ, and improves sludge settling performance.

Description

Technical Field

[0001] This invention relates to the field of aeration technology for wastewater treatment, specifically to an energy-saving control device for zoned aeration in biochemical reaction processes. Background Technology

[0002] The biochemical reaction process zoned aeration device is an intelligent control system that achieves a dynamic balance between oxygen supply and consumption by precisely regulating the dissolved oxygen concentration in each zone, thereby improving wastewater treatment efficiency and reducing energy consumption. In recent years, micro- and nano-bubbles have shown great application potential in the field of water treatment due to their characteristics such as high dissolved oxygen efficiency, long residence time, and large specific surface area.

[0003] When micro-nano bubble aeration technology is applied to traditional aeration tanks, it still has many limitations. For example, it can damage the structure of activated sludge flocs, causing sludge to float and reducing effluent quality. It can also damage the microbial cells in the activated sludge, reducing wastewater treatment efficiency. Furthermore, it generates a large amount of foam at the air-water interface, leading to the formation and release of large amounts of bioaerosols, severely polluting the surrounding air environment. Simultaneously, in current wastewater treatment aeration devices, the aeration pipes, which play a major role in aeration operation, are still fixed in place, and the rotation of the stirring blades can only achieve stirring in one direction. Ultimately, this results in a relatively low aeration effect of the aeration nozzles on the aeration pipes in the wastewater, requiring the arrangement of a large number of aeration pipes and nozzles to improve the aeration effect. The complex mechanical structure not only increases production costs but also makes the wastewater more prone to damage and maintenance, and increases energy consumption. Summary of the Invention

[0004] This invention provides a zoned aeration energy-saving control device for biochemical reaction processes, which can comprehensively agitate the wastewater in the aeration reaction tank. At the same time, it can achieve sufficient aeration effect without the need to install a large number of aeration pipes and aeration nozzles, thus reducing energy consumption. Furthermore, by adopting zoned generation of micro-nano bubbles and transition of nano-bubbles, as well as aeration and agitation, it can effectively avoid the sludge floating phenomenon caused by a large number of micro-bubbles in the in-situ generation stage of micro-nano bubbles, thereby improving sludge settling performance.

[0005] To achieve the above objectives, a biochemical reaction process zoned aeration energy-saving control device is provided, comprising an aeration reaction tank and a micro / nano bubble generation and transition zone water tank. Multiple guide plates are fixedly connected to the inner wall of the micro / nano bubble generation and transition zone water tank. Each guide plate has a notch at its top. The notches on the multiple guide plates, together with the inner wall of the micro / nano bubble generation and transition zone water tank, form an S-shaped water flow channel. Each guide plate has a through slot on its outer wall. The number of guide plates is not less than [number missing], and the notches are staggered to form at least one complete S-shaped meander. The through-slot of the guide plates... The slots are arranged in staggered layers along the height direction. The inner surface of the through slots of multiple guide plates is fixedly connected to a micro-nano bubble generator. The micro-nano bubble generator and the outer surface of the transition zone water tank have a through opening at the end of the S-shaped water flow channel. The inner surface of the through opening of the micro-nano bubble generator and the transition zone water tank is fixedly connected to a connecting square tube. The outer surface of the connecting square tube is far away from the other end and is fixedly connected to the aeration reaction tank. A rubber valve is fixedly installed on the inner surface of the connecting square tube. The connecting square tube has no less than two rubber valves with opposite opening directions to form a double check valve.

[0006] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, an aerosol collection pipe is fixedly connected to the outer top of the micro-nano bubble generation and transition zone water tank. The aerosol collection pipe includes: a gas collecting pipe with multiple through-holes on its outer wall; and a branch pipe, one end of which is fixedly connected to the inner surface of one of the through-holes on the side of the gas collecting pipe. A through-hole is located on the outer top of the aeration reaction tank near the branch pipe, and the end of the branch pipe furthest from the gas collecting pipe is connected to the top of the aeration reaction tank via a through-hole. The inner surface of the hole is fixedly connected; flared mouth A, the bottom of which is fixedly connected to the end of the branch pipe away from the gas collecting pipe, is located inside the aeration reaction tank; flared mouth B, the outer top of multiple flared mouths B is fixedly connected to the inner surface of the through round hole at the outer bottom of the gas collecting pipe through the air pipe, and the multiple flared mouths B are located at the end of the S-shaped water flow channel inside the micro-nano bubble generation and transition zone water tank; the end of the gas collecting pipe away from the micro-nano bubble generation and transition zone water tank needs to be fixedly connected to the output end of the exhaust device.

[0007] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, a stirring and aeration assembly is fixedly connected to the inner side of the aeration reaction tank. The stirring and aeration assembly includes: an air supply pipe with multiple through-holes on its outer surface, the bottom of which is fixedly connected to the inner bottom of the aeration reaction tank; a jet pipe with the outer sides of multiple jet pipes fixedly connected to the inner surface of the through-holes in the air supply pipe, and a valve fixedly installed inside the nozzle of the jet pipe; a through-hole on the top outer side of the aeration reaction tank near the air supply pipe; a rotating sleeve with its outer surface rotatably connected to the inner surface of the aeration reaction tank near the air supply pipe, and its inner surface rotatably connected to the outer surface of the air supply pipe; a driven bevel gear with its bottom fixedly connected to the top of the rotating sleeve; and a stirring blade with one end of the stirring blade near the driven bevel gear fixedly connected to the outer side of the rotating sleeve, and the other end away from the rotating sleeve rotatably connected to the outer surface of the air supply pipe.

[0008] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, the stirring and aeration components further include: a stirring motor, the bottom of which is fixedly connected to the top of the aeration reaction tank; and a driving bevel gear, the bottom of which is fixedly connected to the output end of the stirring motor, wherein the tooth surface of the driving bevel gear meshes with the tooth surface of the driven bevel gear.

[0009] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, a machine box is fixedly connected to the top of the aeration reaction tank, the stirring motor and the active bevel gear are located inside the machine box, and a through circular hole is opened at the top of the machine box near the gas supply pipe, and the inner surface of the through circular hole of the machine box is fixedly connected to the outer surface of the gas supply pipe.

[0010] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, a through-hole is opened at the beginning of the S-shaped water flow channel on the top of the micro-nano bubble generation and transition zone water tank. A water inlet pipe is fixedly connected to the inner surface of the through-hole at the beginning of the S-shaped water flow channel in the micro-nano bubble generation and transition zone water tank. A drain pipe is fixedly connected to the bottom of the outer side of the aeration reaction tank, and a valve is fixedly installed on the drain pipe.

[0011] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, the aeration reaction tank and the micro-nano bubble generation and transition zone water tank are both fixedly connected to the outside of the support legs.

[0012] According to the aforementioned biochemical reaction process zoned aeration energy-saving control device, the connecting square tube is provided with no less than two rubber valves with opposite opening directions, the two valves opening in opposite directions.

[0013] The beneficial effects of this invention are as follows: By setting up stirring and aeration components, the wastewater in the aeration reaction tank can be stirred in all directions, while achieving sufficient aeration effect without the need for a large number of aeration pipes and aeration nozzles, thus reducing energy consumption; by setting up an aeration reaction tank, a micro-nano bubble generation and transition zone water tank, a micro-nano bubble generator, and a guide plate, and by adopting zoned generation of micro-nano bubbles and transition of nano-bubbles as well as aeration and stirring, the sludge floating phenomenon caused by a large number of micro-bubbles existing in the in-situ generation stage of micro-nano bubbles can be effectively avoided, thus improving sludge settling performance.

[0014] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional schematic diagram of the external structure of a zoned aeration energy-saving control device for a biochemical reaction process according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the external structure of a zoned aeration energy-saving control device for a biochemical reaction process according to the present invention. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the internal structure of a zoned aeration energy-saving control device for biochemical reaction processes according to the present invention. Figure 1 ; Figure 4 This is a three-dimensional schematic diagram of the internal structure of a zoned aeration energy-saving control device for biochemical reaction processes according to the present invention. Figure 2 ; Figure 5 This is a three-dimensional schematic diagram of the internal structure of a zoned aeration energy-saving control device for biochemical reaction processes according to the present invention. Figure 3 ; Figure 6 This is a top view schematic diagram of the internal structure of a biochemical reaction process zoned aeration energy-saving control device according to the present invention.

[0016] Legend: 1. Aeration reaction tank; 2. Micro / nano bubble generation and transition zone water tank; 3. Aerosol collection pipe fittings; 301. Air collection pipe; 302. Branch pipe; 303. Trumpet mouth A; 304. Trumpet mouth B; 4. Casing; 5. Agitator and aeration assembly; 501. Air supply pipe; 502. Driven bevel gear; 503. Rotating sleeve; 504. Agitator blade; 505. Jet pipe; 506. Driven bevel gear; 507. Agitator motor; 6. Water inlet pipe; 7. Support leg; 8. Drain pipe; 9. Guide plate; 10. Micro / nano bubble generator; 11. Connecting square tube. Detailed Implementation

[0017] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0018] Reference Figure 1 and Figures 3 to 6 This invention discloses a zoned aeration energy-saving control device for a biochemical reaction process, comprising an aeration reaction tank 1 and a micro / nano bubble generation and transition zone water tank 2. Multiple guide plates 9 are fixedly connected to the inner wall of the micro / nano bubble generation and transition zone water tank 2. Each guide plate 9 has a notch at its top. The notches on the guide plates 9, together with the inner wall of the micro / nano bubble generation and transition zone water tank 2, form an S-shaped water flow channel. Each guide plate 9 has a through slot on its outer wall. There are at least four guide plates 9, and the notches are staggered to form at least two complete S-shaped bends. The through slots of the guide plates 9 are... The flow guide plates 9 are arranged in staggered layers along the height direction. The inner surface of the through slot of each flow guide plate 9 is fixedly connected to a micro-nano bubble generator 10. The micro-nano bubble is generated at the end of the S-shaped water flow channel on the outer surface of the transition zone water tank 2. A connecting square tube 11 is fixedly connected to the inner surface of the through slot of the micro-nano bubble generator and the transition zone water tank 2. The outer surface of the connecting square tube 11 is far away from the aeration reaction tank 1. A rubber valve is fixedly installed on the inner surface of the connecting square tube 11. The connecting square tube 11 is equipped with no less than two rubber valves with opposite opening directions to form a double check valve.

[0019] The aeration reaction tank 1 and the micro-nano bubble generation and transition tank 2 are set up so that sewage enters the micro-nano bubble generation and transition tank 2 through the inlet pipe 6, and micro-nano bubbles are generated in this area by the micro-nano bubble generator 10. The micro-nano bubble generator 10 aerates the sewage by generating micro-nano bubbles. Due to the S-shaped water flow channel formed by the guide plate 9, the aeration time of sewage in the micro-nano bubble generation and transition tank 2 is greatly increased. After being aerated by micro-nano bubbles in the micro-nano bubble generation and transition tank 2, the sewage will enter the aeration reaction tank 1 through the connecting square pipe 11 for further aeration.

[0020] Reference Figure 2 , 45. Micro-nano bubble generation and aerosol collection pipe 3 is fixedly connected to the top of the outer side of the water tank 2. The aerosol collection pipe 3 includes: a gas collecting pipe 301, the outer wall of which has multiple through holes; a branch pipe 302, one end of which is fixedly connected to the inner surface of the through hole on the side of the gas collecting pipe 301; a through hole is opened on the top of the outer side of the aeration reaction tank 1 near the branch pipe 302; the end of the branch pipe 302 away from the gas collecting pipe 301 is fixedly connected to the inner surface of the through hole at the top of the aeration reaction tank 1; horn Mouth A303: The bottom of the horn mouth A303 is fixedly connected to the end of the air pipe 302 away from the air collecting pipe 301. Mouth mouth A303 is located inside the aeration reaction tank 1. Mouth mouth B304: The top of the outer side of multiple horn mouths B304 is fixedly connected to the inner surface of the through round hole at the bottom of the outer side of the air collecting pipe 301 through the air pipe. Multiple horn mouths B304 are located at the end of the S-shaped water flow channel inside the micro-nano bubble generation and transition zone water tank 2. The end of the air collecting pipe 301 away from the micro-nano bubble generation and transition zone water tank 2 needs to be fixedly connected to the output end of the exhaust device.

[0021] The purpose of setting up the aerosol collection pipe 3 is to facilitate the collection of a large amount of aerosol generated by aeration in the aeration reaction tank 1 and the micro-nano bubble generation and transition zone water tank 2, thereby reducing the generation and dissipation of bioaerosols.

[0022] Reference Figure 2 and Figure 4 The aeration reactor 1 is fixedly connected to the inner side of a stirring and aeration assembly 5, which includes: an air supply pipe 501, with multiple through holes on its outer surface, and the bottom of the air supply pipe 501 fixedly connected to the bottom of the inner side of the aeration reactor 1; a jet pipe 505, with the outer sides of multiple jet pipes 505 fixedly connected to the inner surface of the through holes in the air supply pipe 501, and a valve fixedly installed inside the nozzle of the jet pipe 505; a through hole is opened on the top outer side of the aeration reactor 1 near the air supply pipe 501; and a rotating sleeve. The outer surface of the rotating sleeve 503 is rotatably connected to the inner surface of the gas supply pipe 501 near the aeration reaction tank 1, and the inner surface of the rotating sleeve 503 is rotatably connected to the outer surface of the gas supply pipe 501; the bottom of the driven bevel gear 502 is fixedly connected to the top of the rotating sleeve 503; the stirring blade 504 has one end near the driven bevel gear 502 fixedly connected to the outer side of the rotating sleeve 503, and the other end away from the rotating sleeve 503 rotatably connected to the outer surface of the gas supply pipe 501.

[0023] The mixing and aeration assembly 5 is designed so that when the mixing motor 507 is started, it drives the mixing blades 504 to mix the wastewater through the meshing of the driven bevel gear 502 and the driving bevel gear 506. During this process, external air is continuously supplied to the aeration reaction tank 1 through the air supply pipe 501 and then introduced into the wastewater through the jet pipe 505 for aeration. The stirring and aeration assembly 5 also includes: a stirring motor 507, the bottom of which is fixedly connected to the top of the aeration reaction tank 1; and a driving bevel gear 506, the bottom of which is fixedly connected to the output end of the stirring motor 507, and the tooth surface of the driving bevel gear 506 meshes with the tooth surface of the driven bevel gear 502.

[0024] The top of the aeration reaction tank 1 is fixedly connected to the housing 4. The stirring motor 507 and the drive bevel gear 506 are located inside the housing 4. A through round hole is opened on the top of the housing 4 near the gas supply pipe 501. The inner surface of the through round hole of the housing 4 is fixedly connected to the outer surface of the gas supply pipe 501.

[0025] The top of the micro-nano bubble generation and transition zone water tank 2 has a through hole at the beginning of the S-shaped water flow channel. The inner surface of the through hole at the beginning of the S-shaped water flow channel of the micro-nano bubble generation and transition zone water tank 2 is fixedly connected to the water inlet pipe 6. The bottom of the outer side of the aeration reaction tank 1 is fixedly connected to the drain pipe 8, and a valve is fixedly installed on the drain pipe 8.

[0026] Both the aeration reaction tank 1 and the micro-nano bubble generation and transition zone water tank 2 are fixedly connected to support legs 7 on the outside.

[0027] The connecting square tube 11 is provided with no less than two rubber valves with opposite opening directions.

[0028] Working principle: During use, sewage enters the micro-nano bubble generation and transition zone tank 2 through the inlet pipe 6, and micro-nano bubbles are generated in this area by the micro-nano bubble generator 10. The micro-nano bubble generator 10 aerates the sewage by generating micro-nano bubbles. Due to the S-shaped water flow channel formed by the guide plate 9, the aeration time of the sewage inside the micro-nano bubble generation and transition zone tank 2 is greatly increased. After micro-nano bubble aeration in the micro-nano bubble generation and transition zone tank 2, the sewage will enter the aeration reaction tank 1 through the connecting square pipe 11 for further aeration. By starting the stirring motor 507, the stirring motor 507 drives the stirring fan blade 504 to stir the sewage through the meshing between the driven bevel gear 502 and the driving bevel gear 506. During this period, external air will continuously enter the aeration reaction tank 1 through the air supply pipe 501 and be introduced into the sewage through the jet pipe 505 for aeration. After the transition zone transformation, a large number of nanobubbles enter the sludge-water coexistence zone, and through the stirring device, they come into full contact with the activated sludge, thereby improving oxygen utilization and sludge settling performance, thus improving sewage treatment efficiency. At the same time, the aerosol collection pipe 3 collects a large number of aerosols generated by aeration inside the aeration reaction tank 1 and the micro-nanobubble generation transition zone water tank 2, reducing the generation and dispersion of bioaerosols.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A zoned aeration energy-saving control device for a biochemical reaction process, characterized in that, The system includes an aeration reaction tank (1) and a micro / nano bubble generation and transition zone water tank (2). Multiple guide plates (9) are fixedly connected to the inner wall of the micro / nano bubble generation and transition zone water tank (2). Each guide plate (9) has a notch at its top. The notches on the multiple guide plates (9) and the inner wall of the micro / nano bubble generation and transition zone water tank (2) work together to form an S-shaped water flow channel. Each guide plate (9) has a through slot on its outer side wall. There are at least four guide plates (9), and the notches are staggered vertically to form at least two complete S-shaped bends. The through slots of the guide plates (9) are arranged in staggered layers along the height direction. Micro-nano bubble generators (10) are fixedly connected to the inner surface of the through slots of multiple guide plates (9). The micro-nano bubble generators and the water tank (2) of the transition zone have through openings at the end of the S-shaped water flow channel. The inner surface of the through opening of the micro-nano bubble generators and the water tank (2) of the transition zone has a connecting square tube (11) fixedly connected to it. The outer surface of the connecting square tube (11) is far away from the aeration reaction tank (1), and one end of the connecting square tube (11) is fixedly connected to the aeration reaction tank (1). The inner surface of the connecting square tube (11) is fixedly installed with rubber valves. The connecting square tube (11) has at least two rubber valves with opposite opening directions to form a double check valve.

2. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, The micro-nano bubble generation and the outer top of the water tank (2) are fixedly connected to an aerosol collection pipe (3), which includes: The gas collecting pipe (301) has multiple through circular holes on its outer wall; A bronchus (302) is provided. One end of the bronchus (302) is fixedly connected to the inner surface of the through hole on the side of the gas collecting pipe (301). A through hole is provided at the top of the outer side of the aeration reaction tank (1) near the bronchus (302). The end of the bronchus (302) away from the gas collecting pipe (301) is fixedly connected to the inner surface of the through hole at the top of the aeration reaction tank (1). The bottom of the horn mouth A (303) is fixedly connected to the end of the bronchus (302) away from the gas collecting pipe (301), and the horn mouth A (303) is located inside the aeration reaction tank (1). The outer top of the multiple horn mouths B (304) are fixedly connected to the inner surface of the through round hole at the bottom of the outer side of the gas collecting pipe (301) through the air pipe. The multiple horn mouths B (304) are located at the end of the internal S-shaped water flow channel of the micro-nano bubble generation and transition zone water tank (2). The end of the gas collecting pipe (301) away from the micro-nano bubble generation and the water tank (2) needs to be fixedly connected to the output end of the exhaust device.

3. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, The aeration reaction tank (1) is fixedly connected to a stirring and aeration assembly (5), which includes: Gas delivery pipe (501), the outer surface of the gas delivery pipe (501) has multiple through round holes, and the bottom of the gas delivery pipe (501) is fixedly connected to the inner bottom of the aeration reaction tank (1). A jet pipe (505) is fixedly connected to the inner surface of the through hole of the gas delivery pipe (501) on the outer side of a plurality of jet pipes (505), and a valve is fixedly installed inside the nozzle of the jet pipe (505). A through hole is provided on the top outer side of the aeration reaction tank (1) near the gas supply pipe (501); Rotating sleeve (503), the outer surface of the rotating sleeve (503) is rotatably connected to the inner surface of the gas supply pipe (501) of the aeration reaction tank (1), and the inner surface of the rotating sleeve (503) is rotatably connected to the outer surface of the gas supply pipe (501). Driven bevel gear (502), the bottom of which is fixedly connected to the top of the rotating sleeve (503); The stirring blade (504) has one end near the driven bevel gear (502) fixedly connected to the outside of the rotating sleeve (503), and the other end away from the rotating sleeve (503) rotatably connected to the outer surface of the gas delivery pipe (501).

4. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 3, characterized in that, The stirring and aeration assembly (5) also includes: A stirring motor (507) is fixedly connected at its bottom to the top of the aeration reaction tank (1); The active bevel gear (506) is fixedly connected to the output end of the stirring motor (507) at its bottom, and the tooth surface of the active bevel gear (506) meshes with the tooth surface of the driven bevel gear (502).

5. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, The top of the aeration reaction tank (1) is fixedly connected to the housing (4). The stirring motor (507) and the active bevel gear (506) are located inside the housing (4). A through hole is opened at the top of the housing (4) near the gas supply pipe (501). The inner surface of the through hole of the housing (4) is fixedly connected to the outer surface of the gas supply pipe (501).

6. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, The top of the micro-nano bubble generating and transition zone water tank (2) has a through hole at the beginning of the S-shaped water flow channel. The inner surface of the through hole at the beginning of the S-shaped water flow channel of the micro-nano bubble generating and transition zone water tank (2) is fixedly connected to a water inlet pipe (6). The bottom of the outer side of the aeration reaction tank (1) is fixedly connected to a drain pipe (8). A valve is fixedly installed on the drain pipe (8).

7. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, Both the aeration reaction tank (1) and the micro-nano bubble generation and transition zone water tank (2) are fixedly connected to support legs (7).

8. The energy-saving control device for zoned aeration in a biochemical reaction process according to claim 1, characterized in that, The connecting square tube (11) is provided with at least two rubber valves with opposite opening directions.

Images