A biofilm-based wastewater biochemical treatment device

Abstract

This utility model relates to the field of wastewater treatment technology, specifically a biofilm-based wastewater biochemical treatment device, comprising: a biochemical tank, wherein the biochemical tank has two internally connected partitions, and a reflux mechanism is provided inside the biochemical tank. The reflux mechanism is equipped with a suction mechanism and a feeding mechanism, which are connected to each other. By adding modified carriers throughout the tank, the total amount and activity of all organisms in the wastewater are increased, improving the impact resistance in food wastewater treatment. In this utility model, the reflux mechanism, suction mechanism, and feeding mechanism can solve the problem of carrier accumulation at the end of the biochemical tank, and return the wastewater and carriers to the anoxic tank and anaerobic tank respectively, so that the carriers continuously circulate in the anaerobic, anoxic, and aerobic tanks, thereby comprehensively removing pollutants such as organic matter, nitrogen, and phosphorus, thus improving the practicality of this device.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a biofilm-based wastewater biochemical treatment device. Background Technology

[0002] Industrial wastewater includes production wastewater, industrial sewage, and cooling water. It refers to the wastewater and waste liquid generated during industrial production processes. The composition of industrial wastewater is very complex. For example, the wastewater discharged from the food industry, including sugar refining, brewing, meat processing, and dairy processing, contains organic matter, has a strong oxygen demand, and a large amount of suspended solids are discharged with the wastewater. The wastewater discharged from animal food processing also contains animal excrement, blood, fur, grease, etc., and may contain pathogens. Therefore, its oxygen demand is very high, and its pollution is much higher than that of wastewater discharged from plant food processing. At present, wastewater purification and reuse are receiving more and more attention. In the process of wastewater purification, biofilm wastewater biological treatment devices are needed.

[0003] Currently, traditional biofilm-based wastewater biological treatment devices still have some shortcomings. Existing wastewater treatment processes generally adopt a "pretreatment + enhanced biological process" model. The enhanced biological process often includes anaerobic, anoxic, aerobic, and sedimentation stages. However, this model is easily affected by influent pollutants, leading to the death of microorganisms in the biological tank and sludge overflowing from the sedimentation tank, resulting in substandard wastewater treatment. When using modified carriers to purify wastewater, the modified carriers will flow to the end of the biological tank, resulting in accumulation. To address this, airlift or propeller methods are used to return the carriers to the anaerobic tank. However, this brings a large amount of water from the aerobic tank back to the anaerobic tank. Since the water contains a lot of dissolved oxygen, it will disrupt the anaerobic environment. Therefore, we propose a biofilm-based wastewater biological treatment device. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned in the background, the present invention provides a biofilm-based wastewater biochemical treatment device.

[0005] This utility model overcomes the above technical problems by adopting the following technical solution:

[0006] A biofilm-based wastewater biological treatment device includes: a biological treatment tank; two partitions connected inside the biological treatment tank; a reflux mechanism inside the biological treatment tank; a suction mechanism and a feeding mechanism respectively installed on the reflux mechanism, and the suction mechanism and the feeding mechanism are connected; a stirring mechanism is installed on one side of the biological treatment tank; a stirring mechanism is installed between the two sides of the inner wall of the biological treatment tank, and the stirring mechanism passes through the two partitions and extends to one side of the biological treatment tank; a transmission component and an air pumping mechanism are installed on the front and back of the biological treatment tank, and the two transmission components are respectively connected to the two air pumping mechanisms and extend into the interior of the biological treatment tank; the two air pumping mechanisms extend to one side of the biological treatment tank and engage with the stirring mechanism.

[0007] As a further embodiment of this utility model: the reflux mechanism includes a collection box and a reflux pipe. The collection box is connected inside the biochemical tank, and the reflux pipe is connected to one side of the collection box, with one end of the reflux pipe extending between two partitions.

[0008] As a further embodiment of this utility model: the suction mechanism includes a mounting plate, a water pump, a suction pipe, and a discharge pipe. The mounting plate is connected to one side of the collection box, the water pump is connected to the top of the mounting plate, the suction pipe is connected to the input end of the water pump, and the suction pipe passes through the mounting plate and extends to the lower part of the inner wall of the biochemical tank. The discharge pipe is connected to the output end of the water pump, and one end of the discharge pipe extends into the interior of the collection box.

[0009] As a further embodiment of this utility model: the feeding mechanism includes a blower, an air inlet pipe, a water leakage pipe, and a material guide pipe. The blower is connected to one side of the collection box, the air inlet pipe is connected between the output end of the blower and one side of the collection box, the material guide pipe is connected to the other side of the collection box, the water leakage pipe is connected between the two sides of the inner wall of the collection box, and the two ends of the water leakage pipe extend to the two sides of the collection box and are connected to one end of the air inlet pipe and the material guide pipe, respectively. The outer surface of the water leakage pipe is connected to one end of the discharge pipe.

[0010] As a further embodiment of this utility model: the stirring mechanism includes a mounting frame, a forward and reverse motor, a connecting rod, two stirring blades, and a gear. The mounting frame is connected to one side of the biochemical tank, the forward and reverse motor is connected to the top of the mounting frame, the connecting rod is rotatably connected between the two sides of the inner wall of the biochemical tank, and the connecting rod extends through the two partitions to one side of the biochemical tank and is connected to one end of the output shaft of the forward and reverse motor. The two stirring blades are both connected to the outer surface of the connecting rod, and the two stirring blades are respectively located between the two partitions and one side of the inner wall of the biochemical tank and between one of the partitions. The gear is connected to the outer surface of the connecting rod.

[0011] As a further embodiment of this utility model: the transmission assembly includes a hollow sleeve, a rack, a pressure plate, and a guide rod. The hollow sleeve is connected to one side of the biological tank. The rack is slidably sleeved on the inner wall of the hollow sleeve, and the rack meshes with a gear and extends to the back of the biological tank. The guide rod is connected to the back of the biological tank. The pressure plate is slidably connected to the outer surface of the guide rod, and the front of the pressure plate is connected to one end of the rack.

[0012] As a further embodiment of this utility model: the air-inflating mechanism includes multiple air cylinders, multiple sliding rods, multiple piston plates, a connecting plate, and an exhaust pipe. The multiple air cylinders are all connected to the back of the air cylinders and extend into the interior of the biochemical tank. An air inlet pipe is connected to the outer surface of each of the multiple air cylinders. The multiple sliding rods are slidably connected to the interior of each of the multiple air cylinders, with one end of each sliding rod extending to the back of the multiple air cylinders. The multiple piston plates are respectively connected to the other end of each of the multiple sliding rods and are respectively in contact with the inner surface of each of the multiple air cylinders. The front of the connecting plate is connected to one end of each of the multiple sliding rods, and the back of the connecting plate is connected to the front of the pressure plate. The exhaust pipe is connected to one end of each of the multiple air cylinders.

[0013] By adopting the above structure, this utility model has the following advantages compared with the prior art:

[0014] 1. By adding modified carriers throughout the pool, the amount and activity of all organisms in the wastewater are increased, thereby enhancing the resilience of food wastewater treatment.

[0015] 2. In this utility model, the accumulation of carrier at the end of the biological treatment tank can be solved by the action of the reflux mechanism, the suction mechanism and the feeding mechanism, and the sewage and carrier are returned to the anoxic tank and the anaerobic tank respectively, so that the carrier is continuously circulated in the anaerobic tank, the anoxic tank and the aerobic tank, thereby completely removing pollutants such as organic matter, nitrogen and phosphorus, and thus improving the practicality of this device.

[0016] 3. In this utility model, through the action of the stirring mechanism, transmission component and aeration mechanism, it can stir the anaerobic tank while continuously aerating the aerobic tank, realizing dual use of one machine, reducing the cost of the device, and thus further improving the practicality of the device. 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 schematic diagram of the structure of the reflux mechanism, suction mechanism and feeding mechanism of this utility model;

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

[0020] Figure 4 This is a schematic diagram of the air pumping mechanism of this utility model.

[0021] In the diagram: 1. Biochemical tank; 2. Reflux mechanism; 201. Collection box; 202. Reflux pipe; 3. Suction mechanism; 301. Mounting plate; 302. Water pump; 303. Suction pipe; 304. Discharge pipe; 4. Feeding mechanism; 401. Fan; 402. Air inlet pipe; 403. Water leakage pipe; 404. Guide pipe; 5. Stirring mechanism; 501. Mounting frame; 502. Forward and reverse motors; 503. Connecting rod; 504. Stirring blade; 505. Gear; 6. Transmission assembly; 601. Hollow sleeve; 602. Rack; 603. Pressure plate; 604. Guide rod; 7. Air pumping mechanism; 701. Air cylinder; 702. Slide rod; 703. Piston plate; 704. Connecting plate; 705. Exhaust pipe. 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] Example 1:

[0024] Please see Figures 1-4 In this embodiment of the present invention, a biofilm-based wastewater biochemical treatment device includes: a biochemical tank 1, with two partitions connected inside the biochemical tank 1. A reflux mechanism 2 is provided inside the biochemical tank 1, and a suction mechanism 3 and a feeding mechanism 4 are respectively provided on the reflux mechanism 2, and the suction mechanism 3 is connected to the feeding mechanism 4. A stirring mechanism 5 is provided on one side of the biochemical tank 1, and a stirring mechanism 5 is provided between the two sides of the inner wall of the biochemical tank 1. The stirring mechanism 5 passes through the two partitions and extends to one side of the biochemical tank 1. A transmission component 6 and an air pumping mechanism 7 are provided on the front and back of the biochemical tank 1, and the two transmission components 6 are respectively connected to the two air pumping mechanisms 7 and extend into the interior of the biochemical tank 1. The two air pumping mechanisms 7 extend to one side of the biochemical tank 1 and engage with the stirring mechanism 5.

[0025] Specifically, after the sewage and carrier flow into the other side of the inner wall of the biological treatment tank 1, the suction mechanism 3 is activated to suck up the sewage and carrier inside the biological treatment tank 1. Then, the sewage and carrier are transported to the feeding mechanism 4. After the feeding mechanism 4 separates the carrier and sewage, the sewage falls into the return mechanism 2 for collection. Then, the sewage can flow into the space between the two partitions through the return mechanism 2. Finally, the feeding mechanism 4 is activated to blow the carrier into the interior of the anaerobic tank, thereby preventing the carrier from accumulating on the other side of the inner wall of the biological treatment tank 1. By activating the stirring mechanism 5, the sewage in the anaerobic tank can be stirred at the same time. At the same time, the two transmission components 6 can drive the two aeration mechanisms 7 to aerate the aerobic tank inside the biological treatment tank 1, thereby providing sufficient dissolved oxygen for the carrier.

[0026] Example 2:

[0027] Please see Figure 2 In this embodiment of the present invention, a biofilm-based wastewater biochemical treatment device includes a return mechanism 2 comprising a collection box 201 and a return pipe 202. The collection box 201 is connected to the inside of the biochemical tank 1, and the return pipe 202 is connected to one side of the collection box 201, with one end extending between two partitions. A suction mechanism 3 includes a mounting plate 301, a water pump 302, a suction pipe 303, and a discharge pipe 304. The mounting plate 301 is connected to one side of the collection box 201, the water pump 302 is connected to the top of the mounting plate 301, the suction pipe 303 is connected to the input end of the water pump 302, and the suction pipe 303 penetrates the mounting plate 301 and extends to the lower part of the inner wall of the biochemical tank 1. The discharge pipe 304 is connected to the water pump 302. The output end of pump 302 is connected, and one end of discharge pipe 304 extends into the interior of collection box 201. The feeding mechanism 4 includes a blower 401, an air inlet pipe 402, a water drain pipe 403, and a guide pipe 404. The blower 401 is connected to one side of collection box 201. The air inlet pipe 402 is connected between the output end of blower 401 and one side of collection box 201. The guide pipe 404 is connected to the other side of collection box 201. The water drain pipe 403 is connected between the two sides of the inner wall of collection box 201, and both ends of the water drain pipe 403 extend to the two sides of collection box 201 and are connected to one end of air inlet pipe 402 and guide pipe 404, respectively. The outer surface of water drain pipe 403 is connected to one end of discharge pipe 304.

[0028] Specifically, after the sewage and carrier flow into the other side of the inner wall of the biological treatment tank 1, the water pump 302 is started. The sewage and carrier in the aerobic tank are transported through the suction pipe 303 to the inside of the drain pipe 403 through the discharge pipe 304. The drain pipe 403 will separate the carrier and sewage, allowing the sewage to flow into the inside of the collection tank 201. When the sewage accumulates to a certain level, it will flow into the anoxic tank through the return pipe 202. The blower 401 is started to blow air into the air inlet pipe 402, which will blow the carrier inside the drain pipe 403 into the inside of the anaerobic tank through the guide pipe 404 for recycling.

[0029] Example 3:

[0030] Please see Figures 3-4 In this embodiment of the invention, a biofilm-based wastewater biochemical treatment device includes a stirring mechanism 5 comprising a mounting frame 501, a forward and reverse motor 502, a connecting rod 503, two stirring blades 504, and a gear 505. The mounting frame 501 is connected to one side of the biochemical tank 1, the forward and reverse motor 502 is connected to the top of the mounting frame 501, and the connecting rod 503 is rotatably connected between the two sides of the inner wall of the biochemical tank 1. The connecting rod 503 extends through two partitions to one side of the biochemical tank 1 and is connected to one end of the output shaft of the forward and reverse motor 502. Two stirring blades 504 are connected to the outer surface of the connecting rod 503, and the two stirring blades 504 are respectively located between the two partitions and one side of the inner wall of the biological tank 1 and between one of the partitions. The gear 505 is connected to the outer surface of the connecting rod 503. The transmission assembly 6 includes a hollow sleeve 601, a rack 602, a pressure plate 603, and a guide rod 604. The hollow sleeve 601 is connected to one side of the biological tank 1. The rack 602 is slidably sleeved on the inner wall of the hollow sleeve 601, and the rack 602 meshes with the gear 505 and extends to... On the back of the biochemical tank 1, a guide rod 604 is connected to the back of the biochemical tank 1, and a pressure plate 603 is slidably connected to the outer surface of the guide rod 604. The front of the pressure plate 603 is connected to one end of the rack 602. The air pumping mechanism 7 includes multiple air cylinders 701, multiple slide rods 702, multiple piston plates 703, a connecting plate 704, and an exhaust pipe 705. The multiple air cylinders 701 are all connected to the back of the air cylinders 701, and the multiple air cylinders 701 extend into the interior of the biochemical tank 1. The outer surface of the multiple air cylinders 701 is connected to an air inlet. The tube, multiple slide rods 702 are slidably connected inside multiple air cylinders 701, and one end of each slide rod 702 extends to the back of the multiple air cylinders 701. Multiple piston plates 703 are respectively connected to the other end of the multiple slide rods 702, and the multiple piston plates 703 are respectively attached to the inner surface of the multiple air cylinders 701. The front of the connecting plate 704 is respectively connected to one end of the multiple slide rods 702, and the back of the connecting plate 704 is connected to the front of the pressure plate 603. The exhaust pipe 705 is connected to one end of the multiple air cylinders 701.

[0031] Specifically, the output shaft of the forward and reverse motor 502 is started, which drives the two stirring blades 504 and the gear 505 to rotate via the connecting rod 503. The two stirring blades 504 stir the sewage in the anaerobic tank. At the same time, the gear 505 drives the rack 602 to drive the pressure plate 603 to slide on the outer surface of the guide rod 604, which in turn drives the connecting plate 704 to move closer to the back of the biological tank 1. The connecting plate 704 drives multiple sliding rods 702 to slide on multiple air cylinders 701, thereby allowing multiple piston plates 703 to move inside the multiple air cylinders 701. This forces the gas inside the multiple air cylinders 701 into the exhaust pipe 705. The exhaust pipe 705 then diverts the gas into the aerobic tank, providing sufficient dissolved oxygen for the carrier.

[0032] The working principle of this invention is as follows: In use, wastewater is poured into the biological treatment tank 1, where it flows from left to right. A modified carrier is then added to the tank. This carrier adsorbs insoluble impurities in the wastewater between one side of the inner wall of the tank and one of the partitions, performing the first stage of pollutant removal. The carrier then flows with the wastewater through one partition into the space between two partitions, i.e., the anoxic tank. In the anoxic tank, a large amount of nitrate nitrogen is converted into nitrogen gas and released into the air, achieving denitrification of the wastewater. Finally, the wastewater and carrier flow through the other partition into the other side of the inner wall of the biological treatment tank 1, i.e., the final stage. In the aerobic tank, two aeration mechanisms 7 provide sufficient dissolved oxygen to the carrier. Then, water pump 302 is started. The input end of water pump 302 draws in wastewater and carrier from the aerobic tank through suction pipe 303. The carrier and wastewater are then transported through the output end of water pump 302 to the discharge pipe 304, and subsequently into the drain pipe 403. The drain pipe 403 separates the carrier and wastewater into solid and liquid components. The wastewater flows into the collection tank 201. When it accumulates to a certain level, the wastewater flows into the anoxic tank through the return pipe 202. At this point, blower 401 is started, and its output end blows air into the air inlet pipe 402, thereby clearing the drain pipe 403. The internal carrier is blown into the anaerobic tank through the feed pipe 404 for continuous recycling. This constant circulation of the carrier between the anaerobic, anoxic, and aerobic tanks effectively removes organic matter, nitrogen, phosphorus, and other pollutants. When stirring the anaerobic tank or aerating the aerobic tank is required, the forward and reverse motors 502 are activated. The output shaft of the forward and reverse motors 502 drives two stirring blades 504 to rotate via the connecting rod 503. These blades stir the wastewater in the anaerobic tank, allowing the carrier to better adsorb impurities. The rotation of the connecting rod 503 also drives the gear 505 to rotate. The gear 505 drives the rack 602 to slide the pressure plate 603 on the outer surface of the guide rod 604, which in turn drives the connecting plate 704 to move closer to the back of the biological tank 1. This causes the connecting plate 704 to drive multiple sliding rods 702 to slide on multiple air cylinders 701, which in turn drives multiple piston plates 703 to move inside the multiple air cylinders 701. This pumps the gas inside the multiple air cylinders 701 into the exhaust pipe 705. The exhaust pipe 705 then diverts the gas into the aerobic tank, thus providing sufficient dissolved oxygen for the carrier. Therefore, the repeated pumping of gas can be achieved by rotating the forward and reverse motor 502.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A biological membrane process wastewater biochemical treatment device, characterized by, include: A biochemical tank (1) is provided inside, with two partitions connected inside. A reflux mechanism (2) is provided inside the biochemical tank (1). A suction mechanism (3) and a feeding mechanism (4) are respectively provided on the reflux mechanism (2), and the suction mechanism (3) is connected to the feeding mechanism (4). A stirring mechanism (5) is provided on one side of the biochemical tank (1). A stirring mechanism (5) is provided between the two sides of the inner wall of the biochemical tank (1), and the stirring mechanism (5) passes through the two partitions and extends to one side of the biochemical tank (1). A transmission component (6) and an air pumping mechanism (7) are provided on the front and back of the biochemical tank (1), and the two transmission components (6) are respectively connected to the two air pumping mechanisms (7) and extend into the interior of the biochemical tank (1). The two air pumping mechanisms (7) extend to one side of the biochemical tank (1) and engage with the stirring mechanism (5).

2. The biofilm-based wastewater biochemical treatment device according to claim 1, characterized in that, The reflux mechanism (2) includes a collection box (201) and a reflux pipe (202). The collection box (201) is connected inside the biochemical tank (1), and the reflux pipe (202) is connected to one side of the collection box (201), with one end of the reflux pipe (202) extending between two partitions.

3. The biofilm-based wastewater biochemical treatment device according to claim 2, characterized in that, The feeding mechanism (3) includes a mounting plate (301), a water pump (302), a suction pipe (303), and a discharge pipe (304). The mounting plate (301) is connected to one side of the collection box (201), the water pump (302) is connected to the top of the mounting plate (301), the suction pipe (303) is connected to the input end of the water pump (302), and the suction pipe (303) passes through the mounting plate (301) and extends to the lower part of the inner wall of the biochemical tank (1). The discharge pipe (304) is connected to the output end of the water pump (302), and one end of the discharge pipe (304) extends into the interior of the collection box (201).

4. The biofilm-based wastewater biochemical treatment device according to claim 2, characterized in that, The feeding mechanism (4) includes a blower (401), an air inlet pipe (402), a drain pipe (403), and a guide pipe (404). The blower (401) is connected to one side of the collection box (201). The air inlet pipe (402) is connected between the output end of the blower (401) and one side of the collection box (201). The guide pipe (404) is connected to the other side of the collection box (201). The drain pipe (403) is connected between the two sides of the inner wall of the collection box (201), and both ends of the drain pipe (403) extend to the two sides of the collection box (201) and are connected to one end of the air inlet pipe (402) and the guide pipe (404). The outer surface of the drain pipe (403) is connected to one end of the discharge pipe (304).

5. The biofilm-based wastewater biochemical treatment device according to claim 1, characterized in that, The stirring mechanism (5) includes a mounting frame (501), a forward and reverse motor (502), a connecting rod (503), two stirring blades (504), and a gear (505). The mounting frame (501) is connected to one side of the biochemical tank (1). The forward and reverse motor (502) is connected to the top of the mounting frame (501). The connecting rod (503) is rotatably connected between the two sides of the inner wall of the biochemical tank (1). The connecting rod (503) extends through the two partitions to one side of the biochemical tank (1) and is connected to one end of the output shaft of the forward and reverse motor (502). The two stirring blades (504) are connected to the outer surface of the connecting rod (503). The two stirring blades (504) are located between the two partitions and between one side of the inner wall of the biochemical tank (1) and one of the partitions, respectively. The gear (505) is connected to the outer surface of the connecting rod (503).

6. The biofilm-based wastewater biochemical treatment device according to claim 1, characterized in that, The transmission assembly (6) includes a hollow sleeve (601), a rack (602), a pressure plate (603), and a guide rod (604). The hollow sleeve (601) is connected to one side of the biological tank (1). The rack (602) is slidably sleeved on the inner wall of the hollow sleeve (601), and the rack (602) meshes with the gear (505) and extends to the back of the biological tank (1). The guide rod (604) is connected to the back of the biological tank (1). The pressure plate (603) is slidably connected to the outer surface of the guide rod (604), and the front of the pressure plate (603) is connected to one end of the rack (602).

7. The biofilm-based wastewater biochemical treatment device according to claim 1, characterized in that, The air pumping mechanism (7) includes multiple air cylinders (701), multiple slide rods (702), multiple piston plates (703), a connecting plate (704), and an exhaust pipe (705). The multiple air cylinders (701) are all connected to the back of the air cylinder (701), and all multiple air cylinders (701) extend into the interior of the biochemical tank (1). An air inlet pipe is connected to the outer surface of each of the multiple air cylinders (701). The multiple slide rods (702) are slidably connected inside the multiple air cylinders (701), and the multiple slide rods... One end of (702) extends to the back of multiple air cylinders (701), multiple piston plates (703) are respectively connected to the other end of multiple slide rods (702), and multiple piston plates (703) are respectively attached to the inner surface of multiple air cylinders (701). The front of the connecting plate (704) is respectively connected to one end of multiple slide rods (702), and the back of the connecting plate (704) is connected to the front of the pressure plate (603). The exhaust pipe (705) is connected to one end of multiple air cylinders (701).

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