Paracoccus denitrification nitrogen removal device

Abstract

The invention discloses a paracoccus denitrifying nitrogen removal device which comprises a box body, the box body is connected with a water inlet channel for sewage to enter and a water outlet channel for purified water to be discharged, a rotary drum capable of rotating relative to the box body is arranged in the box body, the cylindrical surface of the rotary drum is hollow, and a biochemical filling block is placed in the cylindrical surface of the rotary drum; an aeration pipeline is arranged in the box body, the box body is at least provided with an air outlet structure communicated with the aeration pipeline on one side of the rotating axis of the rotating drum, and the air outlet structure is positioned below the rotating drum, so that the air outlet structure can push the rotating drum to rotate while spraying bubbles to supply oxygen to sewage. The invention provides a paracoccus denitrifying nitrogen removal device, so as to provide an environment suitable for living of paracoccus, improve the activity of paracoccus and improve the nitrogen removal efficiency.

Description

Technical Field

[0001] The invention specifically relates to a Paracoccus denitrification and denitrification device. Background Art

[0002] With the acceleration of industrialization and urbanization, water pollution is becoming increasingly serious, especially nitrogen pollution, which has become one of the key factors restricting the improvement of water environment quality. In the sewage treatment process, nitrogen mainly exists in the form of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen, which have potential hazards to aquatic ecosystems, such as causing eutrophication of water bodies, causing excessive algae growth, and thus affecting water quality safety.

[0003] Traditional biological denitrification processes mainly include nitrification-denitrification processes, in which nitrification is the process of oxidizing ammonia nitrogen into nitrite nitrogen and nitrate nitrogen, while denitrification is the process of reducing nitrate or nitrite into nitrogen gas and releasing it into the atmosphere using an external organic carbon source and microorganisms, thereby achieving the removal of nitrogen from sewage. As a highly efficient denitrifying bacterium, Paracoccus can effectively promote the occurrence of denitrification under specific conditions. It can convert nitrate nitrogen and nitrite nitrogen in water into nitrogen gas to remove nitrogen, and does not require the addition of an organic carbon source, which is of great significance for improving denitrification efficiency.

[0004] However, in practical applications, Paracoccus can survive in both aerobic and anaerobic environments, and Paracoccus has no denitrification ability in aerobic environments but can grow rapidly. In an absolutely anaerobic environment, Paracoccus will convert nitrate nitrogen and nitrite nitrogen into ammonia nitrogen without eliminating total nitrogen. Only in an anaerobic environment can it convert nitrate nitrogen and nitrite nitrogen in water into nitrogen gas, but the growth is slower in an anaerobic environment. In order to ensure the optimal activity of denitrifying microorganisms such as Paracoccus, it is necessary to provide them with a suitable living environment, including sufficient organic matter as nutrition and appropriate dissolved oxygen control. At the same time, it is also crucial to maintain a good mixing condition, which helps to increase the contact probability between pollutants and microorganisms, thereby accelerating the reaction rate. However, how to efficiently introduce a small amount of oxygen into the system and ensure that it is evenly distributed throughout the treatment device has become a major challenge. In addition, traditional methods often find it difficult to take into account the needs of aeration oxygen supply and stirring and mixing, which increases the complexity of the equipment and operating costs.

[0005] The present invention is just produced based on the above-mentioned shortcomings. Summary of the invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and provide a paracoccus denitrification and denitrification device to provide an environment suitable for the survival of paracoccus, improve the activity of paracoccus, and improve the denitrification efficiency.

[0007] The present invention is achieved through the following technical solutions:

[0008] A Paracoccus denitrification and denitrification device comprises a housing, the housing is connected with an inlet channel for sewage to enter and an outlet channel for purified water to be discharged, a rotating drum which can rotate relative to the housing is arranged in the housing, the cylindrical surface of the rotating drum is hollowed out and a biochemical filling block is placed therein, an aeration pipeline is arranged in the housing, and an air outlet structure connected to the aeration pipeline is arranged in the housing at least on one side of the rotating axis of the rotating drum, and the air outlet structure is located below the rotating drum, so that the air outlet structure can spray bubbles to supply oxygen to the sewage and drive the rotating drum to rotate at the same time.

[0009] In the Paracoccus denitrification and denitrification device as described above, the housing is provided with an excitation drive device for driving the drum to rotate in the initial state.

[0010] In the Paracoccus denitrification and denitrification device as described above, a plurality of net-shaped hollow wrapping shells are placed in the rotating drum, and the biochemical filling blocks are filled in the wrapping shells.

[0011] The Paracoccus denitrification and denitrification device as described above is characterized in that the preparation steps of the biochemical filling block include:

[0012] S1: making the fiber activated carbon into a honeycomb blank;

[0013] S2: Cut the blank into multiple cube-shaped samples;

[0014] S1: Adsorb Paracoccus onto the sample block.

[0015] In the Paracoccus denitrification and denitrification device as described above, the wrapping shell is a hollow spherical mesh shell made of plastic.

[0016] In the Paracoccus denitrification and denitrification device as described above, the inner cavity of the box is respectively divided into a facultative oxic zone at the rear side and an aerobic zone at the front side on the front and rear sides of the rotating axis of the drum, and the gas outlet structure includes a microporous aeration nozzle arranged in the aerobic zone.

[0017] In the Paracoccus denitrification and denitrification device as described above, the gas outlet structure further includes an aeration branch pipe arranged at the rear side of the microporous aeration nozzle, and the sum of the cross-sectional areas of the gas outlet holes of each aeration branch pipe is smaller than the sum of the cross-sectional areas of the gas outlet holes of each microporous aeration nozzle.

[0018] In the Paracoccus denitrification and denitrification device as described above, the rotating drum is connected to a rotating shaft, the rotating shaft is rotatably connected to the housing, the excitation drive device includes a driving motor, the output shaft of the driving motor is connected to a driving sprocket, the rotating shaft is connected to a driven sprocket, a chain is wound between the driving sprocket and the driven sprocket, and the three constitute a chain and sprocket transmission mechanism.

[0019] In the Paracoccus denitrification and denitrification device as described above, a bearing is provided between the rotating shaft and the housing, and the bearing is a ceramic bearing.

[0020] In the Paracoccus denitrification and denitrification device as described above, the water inlet channel is located at the front side of the lower part of the box body, and the water outlet channel is located at the rear side of the upper part of the box body.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The Paracoccus denitrification and denitrification device of the present invention is provided with a rotating drum located in a housing, and a filler rich in Paracoccus is arranged in the rotating drum. Through the rotation of the rotating drum, the filler is repeatedly subjected to an aerobic environment and an anaerobic environment in turn, ensuring the aerobic proliferation and growth of microorganisms while providing anaerobic denitrification conditions, thereby improving the denitrification efficiency. At the same time, the device has a compact structure, and can automatically operate under the action of a self-contained aeration structure. The rotation efficiency of the rotating drum can also be adjusted by adjusting the aeration. The design is ingenious, and a large amount of space and energy can be saved, greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front cross-sectional schematic diagram of the Paracoccus denitrification and denitrification device of the present invention;

[0024] Figure 2 It is a side cross-sectional schematic diagram of the Paracoccus denitrification and denitrification device of the present invention. DETAILED DESCRIPTION

[0025] The invention will be further described below in conjunction with the accompanying drawings:

[0026] The directions described in the specification of the invention, such as "up", "down", "left", "right", "front", "back", etc., are based on the directions of the drawings and are intended to facilitate the description of the relationship between the various components. They do not indicate the unique or absolute positional relationship between the various components. They are only one of the implementation methods of the invention and are not a limitation on its implementation method.

[0027] This embodiment provides a paracoccal denitrification device, such as Figure 1 and Figure 2 As shown, it includes a box body 1, the box body 1 is connected with an inlet channel 11 for sewage to enter, and an outlet channel 12 for purified water to be discharged. The box body 1 is provided with a rotating drum 2 that can rotate relative to it, the cylindrical surface of the rotating drum 2 is hollow and a biochemical filling block 4 is placed therein, and an aeration pipeline 5 is arranged in the box body 1. The box body 1 is provided with an air outlet structure 6 connected to the aeration pipeline 5 on at least one side of the rotating axis of the rotating drum 2, and the air outlet structure 6 is located below the rotating drum 2, wherein the rotating axis of the rotating drum 2 is as shown in FIG. Figure 1 and 2 Q refers to, Figure 2As shown, the inner cavity of the housing 1 is respectively demarcated as the facultative aerobic zone a located at the rear side and the aerobic zone b located at the front side on the front and rear sides of the rotating axis of the drum 2. It is sufficient to arrange the above-mentioned gas outlet structure 6 at the aerobic zone b. Of course, the gas outlet structure 6 can also be arranged in both the facultative aerobic zone a and the aerobic zone b. As long as the number of gas outlet structures 6 at the aerobic zone b is greater, or the gas outlet is larger, or the number of gas outlets is greater, it is sufficient to ensure that the gas outlet volume of the gas outlet structure 6 arranged in the aerobic zone b is much greater than the gas outlet volume of the gas outlet structure 6 arranged in the facultative aerobic zone a. Through this structure, the gas outlet structure 6 sprays bubbles to supply oxygen to the sewage, especially to provide sufficient oxygen for the aerobic zone b. At the same time, due to the large gas outlet volume of the gas outlet structure 6 arranged in the aerobic zone b, a large number of bubbles can drive the drum 2 to rotate during the rising process.

[0028] Since the drum 2 is stationary in the initial state, a larger torque is often required when the drum 2 starts to rotate from a speed of 0. Therefore, in order to enable the drum 2 to rotate in the initial state, this embodiment provides an optimized solution, such as Figure 1 and Figure 2 As shown, an excitation drive device 7 is disposed on the top of the housing 1 of this embodiment. The excitation drive device 7 is transmission-connected to the rotating drum 2 and is used to drive the rotating drum 2 to rotate in the starting state.

[0029] In detail, Figure 1 and Figure 2 As shown, the rotating drum 2 is connected with a rotating shaft 21, and the rotating shaft 21 is rotatably connected to the box body 1. The excitation driving device 7 includes a driving motor 71, and the output shaft of the driving motor 71 is connected with a driving sprocket 72. The rotating shaft 21 is connected with a driven sprocket 73. A chain 74 is wound between the driving sprocket 72 and the driven sprocket 73, and the three constitute a chain 74 sprocket transmission pair, or a chain sprocket transmission mechanism. Of course, the driving sprocket 72, the driven sprocket 73, and the chain 74 can also be replaced with a driving pulley, a driven pulley, and a belt.

[0030] Preferably, a bearing 22 is provided between the rotating shaft 21 and the housing 1 to reduce the friction coefficient. As a more optimal solution, the bearing 22 is a ceramic bearing 22 which has corrosion resistance and can improve the stability and service life of the device.

[0031] As a preferred solution, Figure 1 and Figure 2As shown, a plurality of net-shaped hollow wrapping shells 3 are placed in the rotating drum 2, and the biochemical filling blocks 4 are filled in the wrapping shells 3, wherein the wrapping shells 3 are hollow spherical net-shaped shells made of plastic, that is, the wrapping shells 3 are spherical, hollow plastic balls with net-shaped shells. Of course, in order to facilitate the placement of the biochemical filling blocks 4 in the wrapping shells 3, the wrapping shells 3 can be designed as a split structure, that is, two hemispheres are connected to form a spherical structure by bonding. In this embodiment, the wrapping shells 3 are generally filled with biochemical filling blocks 4, and an appropriate amount of wrapping shells 3 are placed in the rotating drum 2, so that the rising bubbles in the box 1 can pass through the rotating drum 2 and the wrapping shells 3, and the rotating drum 2 and the materials therein can generate resistance to the rising bubbles, so that the rising bubbles can stably drive the rotating drum 2 to rotate.

[0032] In this embodiment, the cylindrical surface of the drum 2 is a mesh structure, and the end surface is connected to a covering structure 22. The covering structure 22 is a structure for covering the end surface of the drum 2, and can be a covering plate or a hollow bracket.

[0033] In this embodiment, the preparation steps of the biochemical filling block 4 include:

[0034] S1: making the fiber activated carbon into a honeycomb blank;

[0035] S2: Cut the blank into multiple cube-shaped samples;

[0036] S1: adsorbing Paracoccus on the sample block, wherein the method of adsorbing Paracoccus can be, placing the sample block in Paracoccus liquid so that a large number of Paracoccus are attached to the sample block.

[0037] As a preference, Figure 2As shown, the inner cavity of the housing 1 is divided into a facultative oxygen zone a located at the rear side and an aerobic zone b located at the front side at the front and rear sides of the rotating axis of the drum 2, respectively. The outlet structure 6 includes a microporous aeration nozzle 61 arranged in the aerobic zone b, and the outlet structure 6 also includes an aeration branch pipe 62 arranged at the rear side of the microporous aeration nozzle 61. The aeration nozzle 61 is a shower-like nozzle with a plurality of tiny air outlet holes on the top, and the aeration branch pipe 62 may also be provided with one or a small number of tiny air outlet holes, and each The sum of the cross-sectional areas of the outlet holes of the aeration branch pipes 62 is less than the sum of the cross-sectional areas of the outlet holes of the microporous aeration nozzles 61, that is, the number of outlet structures 6 at the aerobic zone b is greater, or the outlets are larger, or the number of outlets is greater, as long as the outlet volume of the outlet structure 6 arranged in the aerobic zone b is much greater than the outlet volume of the outlet structure 6 arranged in the facultative zone a, so that the rising bubbles generated in the aerobic zone b are much greater than those in the facultative zone a, so that the rising bubbles in the aerobic zone b can stably drive the rotating drum 2 to rotate. In this embodiment, an aeration fan 7 is connected to one end of the aeration pipeline 5, and the free end of the aeration pipeline 5 is divided into a plurality of branch pipes extending to the bottom of the box body 1, and the aeration nozzles 61 and the aeration branch pipes 62 are connected to each branch pipe.

[0038] In order to make the sewage reaction time more sufficient, such as Figure 2 As shown, the water inlet channel 11 is located at the front side of the lower part of the box body 1, and the water outlet channel 12 is located at the rear side of the upper part of the box body 1.

[0039] The working principle of this embodiment is as follows: when the sewage containing nitrate nitrogen enters the housing 1 from the water inlet channel 11, the driving device 7 is activated to drive the drum 2 to rotate, and the rotation direction is as follows: Figure 2 P in the middle indicates that the aeration pipeline 5 is opened at the same time. A large number of bubbles are generated at the aeration nozzle 61 at the bottom, which drives the water flow to rise and provides power for the drum 2 to rotate. Then the driving device 7 is stimulated to stop working, and then the drum 2 rotates by the power of the rising water flow. At the same time, the oxygen content of the filler, that is, the biochemical filler block 4 in the drum 2, and the surrounding water body increase greatly under the aerated environment to form an aerobic zone b, and the microorganisms of the filler proliferate and grow. When the drum 2 rotates to the rear side of its rotating shaft, only a small amount of bubbles are oxygenated, and the water body around the filler forms an anaerobic state. The nitrate nitrogen and nitrite nitrogen in the water are converted into nitrogen gas, which flows out from the water outlet channel 12 after denitrification, completing the denitrification process. The device can also adjust the rotation speed of the drum in real time according to the concentration of nitrate nitrogen in the water to increase or decrease the denitrification efficiency.

[0040] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A Paracoccus denitrification and denitrification device, characterized in that: The invention comprises a housing (1), the housing (1) being connected with an inlet channel (11) for sewage to enter and an outlet channel (12) for purified water to be discharged, the housing (1) being provided with a rotating drum (2) capable of rotating relative thereto, the cylindrical surface of the rotating drum (2) being hollow and a biochemical filling block (4) being placed therein, an aeration pipeline (5) being arranged in the housing (1), the housing (1) being provided with an air outlet structure (6) connected to the aeration pipeline (5) on at least one side of the rotating axis of the rotating drum (2), and the air outlet structure (6) being located below the rotating drum (2), so that the air outlet structure (6) can eject bubbles to supply oxygen to the sewage and at the same time drive the rotating drum (2) to rotate.

2. The Paracoccus denitrification and denitrification device according to claim 1, characterized in that: The box body (1) is provided with an excitation driving device (7) for driving the rotating drum (2) to rotate in the initial state.

3. The Paracoccus denitrification and denitrification device according to claim 1, characterized in that: A plurality of net-shaped hollow wrapping shells (3) are placed in the rotating drum (2), and the biochemical filling blocks (4) are filled in the wrapping shells (3).

4. The Paracoccus denitrification and denitrification device according to claim 3, characterized in that: The preparation steps of the biochemical filling block (4) include: S1: making the fiber activated carbon into a honeycomb blank; S2: Cut the blank into multiple cube-shaped samples; S1: Adsorb Paracoccus onto the sample block.

5. The Paracoccus denitrification and denitrification device according to claim 3, characterized in that: The wrapping shell (3) is a hollow spherical mesh shell made of plastic.

6. The Paracoccus denitrification and denitrification device according to claim 1, characterized in that: The inner cavity of the housing (1) is divided into a facultative anaerobic zone (a) located at the rear side and an aerobic zone (b) located at the front side on the front and rear sides of the rotating axis of the drum (2), respectively. The gas outlet structure (6) includes a microporous aeration nozzle (61) arranged in the aerobic zone (b).

7. The Paracoccus denitrification and denitrification device according to claim 7, characterized in that: The air outlet structure (6) further comprises an aeration branch pipe (62) arranged at the rear side of the microporous aeration nozzle (61), and the sum of the cross-sectional areas of the air outlet holes of each aeration branch pipe (62) is smaller than the sum of the cross-sectional areas of the air outlet holes of each microporous aeration nozzle (61).

8. The Paracoccus denitrification and denitrification device according to claim 2, characterized in that: The rotating drum (2) is connected to a rotating shaft (21), and the rotating shaft (21) is rotatably connected to the box body (1). The excitation drive device (7) includes a driving motor (71), and the output shaft of the driving motor (71) is connected to a driving sprocket (72). The rotating shaft (21) is connected to a driven sprocket (73). A chain (74) is wound between the driving sprocket (72) and the driven sprocket (73), and the three constitute a chain and sprocket transmission mechanism.

9. The Paracoccus denitrification and denitrification device according to claim 8, characterized in that: A bearing (22) is arranged between the rotating shaft (21) and the housing (1), and the bearing (22) is a ceramic bearing (22).

10. The Paracoccus denitrification and denitrification device according to claim 8, characterized in that: The water inlet channel (11) is located at the front side of the lower part of the box body (1), and the water outlet channel (12) is located at the rear side of the upper part of the box body (1).

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