Aquaculture water treatment mobile biological bed

Abstract

The invention belongs to the technical field of water treatment, and particularly discloses an aquaculture water treatment movable biological bed which comprises a shell, a reaction cylinder and a flow guide cavity, the reaction cylinder is located in the shell, a water storage cavity is formed in the bottom of the shell, and a reaction channel is formed among the outer wall of the reaction cylinder, the inner wall of the shell, the top of the water storage cavity and the outer wall of the flow guide cavity. A filter plate is arranged at the bottom of the reaction cylinder, the bottom of the reaction cylinder is rotationally connected with the filter plate, the top of the reaction cylinder is rotationally connected with the bottom of the flow guide cavity, biological carriers are arranged in the reaction channel and the reaction cylinder, the biological carriers are spherical, micropores are formed in the surfaces of the biological carriers, and biological filler is arranged in the biological carriers. The water treatment movable biological bed for aquaculture is simple in structure, good in biological carrier mobility, not prone to precipitation and high in biological membrane forming and updating speed, the adaptability of the biological bed to different water qualities is improved, water distribution is uniform, and the water treatment effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and particularly to a mobile biological bed for treating aquaculture water. Background Art

[0002] Aquaculture is one of the fastest-growing food production fields in the world. However, with the continuous expansion of aquaculture scale, the quality problem of aquaculture water has become increasingly prominent. Poor water quality can lead to slow growth, frequent diseases, and even death of cultured organisms, seriously affecting the aquaculture benefits. Therefore, it is crucial to effectively treat aquaculture water.

[0003] Currently, common methods for treating aquaculture water include physical filtration, chemical disinfection, and biological treatment, etc. Physical filtration mainly removes solid particles and suspended substances in water through a filtration medium, but has limited removal effects on dissolved organic matter and nutrients. Chemical disinfection can quickly kill pathogens in water, but may have adverse effects on cultured organisms and cause secondary pollution. Biological treatment uses the metabolic action of microorganisms to remove organic matter and nutrients in water, and has advantages such as good treatment effect and no secondary pollution, and is the main development direction for treating aquaculture water currently.

[0004] In biological treatment methods, the biofilm method is a commonly used technology. A biofilm is a viscous film formed by microorganisms on a solid surface, and the microorganisms in it can use organic matter and nutrients in water for growth and metabolism, thereby achieving the purpose of purifying water quality. A fixed biological bed is a common form of the biofilm method, which fixes a biological carrier in a reactor to enable microorganisms to form a biofilm on the surface of the carrier. The fixed biological bed has advantages such as stable treatment effect and small floor area, but there are also some problems, such as the biofilm is prone to aging and clogging, the carrier needs to be cleaned and replaced regularly, the operation is complex, and the cost is relatively high, etc.

[0005] To solve the problems existing in the fixed biological bed, the concept of a mobile biological bed has been proposed. A mobile biological bed suspends a biological carrier in water, enables microorganisms to form a biofilm on the surface of the carrier, and at the same time, through the action of water flow, the biological carrier continuously moves in the reactor, thereby avoiding the aging and clogging of the biofilm and improving the treatment effect and stability. However, the existing mobile biological beds still have some deficiencies, such as the mobility of the biological carrier is not ideal and it is easy to precipitate; the formation and renewal speed of the biofilm is relatively slow; the adaptability to different water qualities is poor, etc., the water treatment effect is poor, and the uneven water distribution leads to the purification effect not meeting the requirements. Summary of the Invention

[0006] The object of the present invention is to provide a mobile biological bed for treating aquaculture water, which has a simple structure, good mobility of the biological carrier, is not easy to precipitate, has a fast formation and renewal rate of the biofilm, improves the adaptability of the biological bed to different water qualities, has uniform water distribution, and improves the water treatment effect.

[0007] To achieve the above object, the present invention provides a mobile biological bed for treating aquaculture water, including a housing, a reaction cylinder, and a diversion chamber. The reaction cylinder is located inside the housing and is coaxially arranged with the housing. A water storage chamber is provided at the bottom of the housing. A reaction channel is formed between the outer wall of the reaction cylinder, the inner wall of the housing, the top of the water storage chamber, and the outer wall of the diversion chamber. A filter plate is provided at the bottom of the reaction cylinder. The reaction cylinder is communicated with the water storage chamber through the filter plate. The bottom of the reaction cylinder is rotatably connected to the filter plate. The top of the reaction cylinder is rotatably connected to the bottom of the diversion chamber. The top of the reaction cylinder is open and communicated with the diversion chamber. An aeration device is provided on the filter plate. Biological carriers are provided in both the reaction channel and the reaction cylinder. The biological carriers are spherical, with micropores on the surface and biological fillers inside. A cover body is provided at the top of the housing, and a water inlet is provided on the cover body.

[0008] Preferably, a plurality of uniformly arranged dial rods are provided on the outer side wall of the reaction cylinder, and the dial rods point into the reaction channel.

[0009] Preferably, a chute one for the reaction cylinder to rotate is provided at the bottom of the diversion chamber. A slider one is provided at the top of the reaction cylinder and is matched with the chute one. The slider one is annular, and a fixing plate is provided at the center of the slider one. A plurality of uniformly distributed reinforcing rods are provided circumferentially on the fixing plate. The fixing plate is connected to the slider one through the reinforcing rods. A rotating shaft is provided on the fixing plate. One end of the rotating shaft penetrates through the cover body and extends to the outside of the cover body. A gear one is provided at the end of the rotating shaft extending to the outside of the cover body. A gear two meshing with the gear one is provided outside the gear one. A motor with an output end connected to the gear two is provided on the cover body.

[0010] Preferably, the cover body includes an upper cover body and a lower cover body. The upper cover body is slidably connected to the lower cover body. A slider two is provided on the upper cover body, and a chute two corresponding to the slider two is provided on the lower cover body. The upper cover body is in a hollow annular shape and is coaxially arranged with the lower cover body. A plurality of uniformly distributed water inlets are provided circumferentially on both the upper cover body and the lower cover body, and the water inlets on the upper cover body can be aligned and communicated with the water inlets on the lower cover body. A handle is provided on the upper cover body.

[0011] Preferably, the aeration device includes an aeration plate and an aeration pipe. The aeration pipe is communicated with an external air pump through the bottom of the housing. One end of the aeration pipe penetrates through the filter plate and is communicated with the aeration plate. Uniformly distributed aeration holes are provided on the aeration plate, and the aeration holes are in a tapered shape with a narrow upper part and a wide lower part.

[0012] Preferably, a drain pipe is provided on one side of the water storage chamber.

[0013] Preferably, a circulation pipe is provided on the outer side of the housing, a circulation pump is provided on the circulation pipe, and both ends of the circulation pipe are communicated with the upper and lower ends of the reaction channel respectively.

[0014] Preferably, the side walls of the top and bottom of the reaction cylinder are both provided with grids.

[0015] The advantages and beneficial effects of the present invention adopting the above-mentioned mobile biological bed for treating aquaculture water are as follows: 1. In the present invention, by rotating the reaction cylinder, the mobility of the biological carrier is good and it is not easy to precipitate. The biological carrier is in a spherical structure, and its density is slightly greater than the density of water, so that it can slowly sink in water but will not precipitate to the bottom. At the same time, the circulation pipe makes the water in the reactor circulate, further improving the mobility of the biological carrier and avoiding the precipitation of the biological carrier.

[0016] 2. In the present invention, the formation and renewal speed of the biofilm are fast. The surface of the biological carrier is provided with micropores and the inside is filled with biological fillers, providing a good environment for the growth and metabolism of microorganisms. At the same time, the aeration device introduces air into the reactor, providing sufficient oxygen for the microorganisms and promoting the growth and metabolism of the biofilm. In addition, the circulation pipe makes the water in the reactor circulate, making the organic matter and nutrient salts in the water evenly distributed, which is also beneficial to the formation and renewal of the biofilm.

[0017] 3. In the present invention, by providing a plurality of water inlets on the cover body, the water flow is dispersed into the housing. The water entering the housing enters the reaction cylinder through the diversion cavity. The water passing through the reaction cylinder enters the reaction channel through the grid at the bottom of the reaction cylinder, and the water in the reaction channel circulates through the circulation pipe, making the water distribution more uniform, thereby improving the final water purification effect.

[0018] Next, through the drawings and embodiments, the technical solutions of the present invention will be further described in detail. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of a mobile biological bed for treating aquaculture water of the present invention; Figure 2 is the schematic diagram of the first slider and the first chute in a mobile biological bed for treating aquaculture water of the present invention; Figure 3 is the sectional view of the cover body in a mobile biological bed for treating aquaculture water of the present invention; Figure 4 is the exploded view of the cover body in a mobile biological bed for treating aquaculture water of the present invention; Figure 5 is the schematic diagram of the reaction cylinder in a mobile biological bed for treating aquaculture water of the present invention; Figure 6It is a schematic diagram of an aeration device in a mobile biological bed for treating aquaculture water according to the present invention. Description of the Drawings

[0020] 1. Circulation pipe; 2. Circulation pump; 3. Drain pipe; 4. Water storage cavity; 5. Filter plate; 6. Reaction channel; 7. Aeration plate; 8. Outer shell; 9. Biological carrier; 10. Reaction cylinder; 11. Poking rod; 12. Cover body; 13. Diversion cavity; 14. Gear one; 15. Gear two; 16. Motor; 17. Rotating shaft; 18. Slide block one; 19. Slide groove one; 20. Aeration pipe; 21. Slide block two; 22. Slide groove two; 23. Upper cover body; 24. Lower cover body; 25. Water inlet; 26. Handle; 27. Reinforcing rod; 28. Fixed plate; 29. Aeration hole. Detailed Embodiments

[0021] The technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] Embodiment 1 As Figure 1 shown, a mobile biological bed for treating aquaculture water includes an outer shell 8, a reaction cylinder 10, and a diversion cavity 13. The reaction cylinder 10 is located inside the outer shell 8 and is coaxially arranged with the outer shell 8. A water storage cavity 4 is provided at the bottom of the outer shell 8. A reaction channel 6 is formed between the outer wall of the reaction cylinder 10, the inner wall of the outer shell 8, the top of the water storage cavity 4, and the outer wall of the diversion cavity 13.

[0024] A filter plate 5 is provided at the bottom of the reaction cylinder 10. The reaction cylinder 10 communicates with the water storage chamber 4 through the filter plate 5. The bottom of the reaction cylinder 10 is rotatably connected to the filter plate 5. The top of the reaction cylinder 10 is rotatably connected to the bottom of the diversion chamber 13. The top of the reaction cylinder 10 is open and communicates with the diversion chamber 13. A plurality of uniformly arranged dial rods 11 are provided on the outer side wall of the reaction cylinder 10, and the dial rods 11 point into the reaction channel 6. The water entering the housing 8 is diverted through the diversion chamber 13 and enters the reaction cylinder 10. The rotation of the reaction cylinder 10 improves the mobility of the biological carrier 9, making the biological carrier 9 not easy to precipitate, strengthening the biological reaction, and improving the water treatment effect. At the same time, when the reaction cylinder 10 rotates, it drives the dial rods 11 to rotate, and the dial rods 11 stir the biological carrier 9 in the reaction channel 6, making the biological carrier 9 in the reaction channel 6 not easy to precipitate either.

[0025] Biological carriers 9 are provided in both the reaction channel 6 and the reaction cylinder 10. The biological carriers 9 are spherical. Micro holes are provided on the surface of the biological carriers 9, and biological fillers are provided inside. The biological carrier 9 has a spherical structure, and its density is slightly greater than the density of water, so that it can slowly sink in water but will not precipitate to the bottom. Micro holes are provided on the surface of the biological carrier 9, and biological fillers are filled inside, providing a good environment for the growth and metabolism of microorganisms. A variety of biological fillers are filled inside the biological carrier 9, which can be selected and combined according to different water quality conditions, improving the adaptability to different water qualities. At the same time, the aeration device and the circulation pipe 1 can adjust the aeration intensity and the water flow rate, and can also be adjusted according to different water quality conditions, further improving the adaptability to different water qualities.

[0026] As Figure 2 shown, a chute one 19 for the rotation of the reaction cylinder 10 is provided at the bottom of the diversion chamber 13. A slider one 18 matching with the chute one 19 is provided at the top of the reaction cylinder 10, and the slider one 18 is annular. The slider one 18 slides and rotates in the chute one 19, providing support and installation positions for the reaction cylinder 10.

[0027] As Figure 5 shown, a fixing plate 28 is provided at the center of the slider one 18. A plurality of uniformly distributed reinforcing rods 27 are circumferentially provided on the fixing plate 28. The fixing plate 28 is connected to the slider one 18 through the reinforcing rods 27. A rotating shaft 17 is provided on the fixing plate 28. One end of the rotating shaft 17 penetrates through the cover body 12 and extends to the outside of the cover body 12. A gear one 14 is provided at the end of the rotating shaft 17 extending to the outside of the cover body 12. A gear two 15 meshing with the gear one 14 is provided outside the gear one 14. A motor 16 with an output end connected to the gear two 15 is provided on the cover body 12. The motor 16 drives the gear two 15 to rotate. The gear two 15 meshes with the gear one 14, driving the gear one 14 to rotate, thereby driving the reaction cylinder 10 to rotate and improving the mobility of the biological carrier 9.

[0028] As Figure 3 and Figure 4As shown, a cover body 12 is provided at the top of the outer shell 8, and a water inlet 25 is provided on the cover body 12. The cover body 12 includes an upper cover body 23 and a lower cover body 24. The motor 16, the first gear 14, and the second gear 15 are located on the lower cover body 24, which does not affect the sliding of the upper cover body 23 on the lower cover body 24. The upper cover body 23 is slidably connected to the lower cover body 24. A second slider 21 is provided on the upper cover body 23, and a second chute 22 corresponding to the second slider 21 is provided on the lower cover body 24. The upper cover body 23 is in a hollow ring shape and is coaxially arranged with the lower cover body 24. A plurality of uniformly distributed water inlets 25 are provided on the circumferences of the upper cover body 23 and the lower cover body 24, and the water inlets 25 of the upper cover body 23 can be aligned and communicated with the water inlets 25 of the lower cover body 24. A handle 26 is provided on the upper cover body 23. By rotating the handle 26 of the upper cover body 23, the upper cover body 23 can be rotated on the lower cover body 24, and the alignment degree of the water inlet 25 on the upper cover body 23 and the water inlet 25 on the lower cover body 24 can be controlled, so that the size of the water flow entering through the water inlet 25 can be controlled.

[0029] An aeration device is provided on the filter plate 5. The aeration device includes an aeration plate 7 and an aeration pipe 20. The aeration pipe 20 is communicated with an external air pump through the bottom of the outer shell 8. One end of the aeration pipe 20 penetrates through the filter plate 5 and is communicated with the aeration plate 7. Uniformly distributed aeration holes 29 are provided on the aeration plate 7, and the aeration holes 29 are arranged in a tapered shape with a narrow upper part and a wide lower part. As Figure 6 shown, the inlet flow rate of the aeration holes 29 is large, and the outlet flow rate is small, which can pressurize the gas and make the gas spray into the reaction cylinder 10, and perform an air flow impact on the biological carrier 9 in the reaction cylinder 10, so that the biological carrier 9 is not easy to precipitate. The aeration device introduces air into the reactor, provides sufficient oxygen for microorganisms, and promotes the growth and metabolism of the biofilm. In addition, the circulation device makes the water in the reactor form a circulating flow, makes the organic matter and nutrient salts in the water evenly distributed, and is also beneficial to the formation and renewal of the biofilm.

[0030] A drain pipe 3 is provided on one side of the water storage cavity 4. The water treated by the reaction cylinder 10 enters the water storage cavity 4 through the filter plate 5 and is discharged through the drain pipe 3.

[0031] A circulation pipe 1 is provided on the outside of the outer shell 8, and a circulation pump 2 is provided on the circulation pipe 1. The two ends of the circulation pipe 1 are respectively communicated with the upper and lower ends of the reaction channel 6. The circulation pipe 1 makes the water flow in the reaction channel 6 circulate through the circulation pump 2, promotes the uniform distribution of the water flow, and improves the water treatment effect.

[0032] The side walls at the top and bottom of the reaction cylinder 10 are both in a grid setting. It is convenient for the water circulation in the reaction cylinder 10 to enter the reaction channel 6, and the water circulation in the reaction channel 6 to enter the reaction cylinder 10.

[0033] As Figure 1 shown, Figure 1The arrow in the figure indicates the water flow direction. When in use, the biological bed is placed into the pool to be treated. By rotating the upper cover body 23 and the lower cover body 24, a suitable water inlet flow is set. The water flow enters the diversion cavity 13 dispersedly through a plurality of water inlets 25. The diversion cavity 13 diverts the dispersed water flow into the reaction cylinder 10 with an open mouth. The motor 16 is started to rotate the reaction cylinder 10, so that the biological carrier 9 moves, accelerating the water treatment process. The water in the reaction cylinder 10 is treated by the biological carrier 9 and then enters the reaction channel 6 from the grid at the bottom of the reaction cylinder 10. The water at the bottom of the reaction channel 6 is circulated to the upper part of the reaction channel 6 through the circulation pipe 1 and the circulation pump 2, then enters the reaction cylinder 10 through the grid at the top of the reaction cylinder 10, and finally enters the water storage cavity 4 through the filter screen and is discharged through the drain pipe 3.

[0034] The aquaculture water to be treated is introduced into the biological bed, and the aeration device and the circulation device are started. The aeration intensity is adjusted to 0.6 m³ / h, and the water flow rate is 0.3 m / s. After running for a period of time, the water quality indexes of the inlet and outlet water of the biological bed are detected, and the results are shown in Table 1 below.

[0035] Table 1 Detection Results

[0036] Therefore, the present invention adopts the above-mentioned mobile biological bed for treating aquaculture water, which has a simple structure, good mobility of the biological carrier, is not easy to precipitate, has a fast formation and renewal speed of the biofilm, improves the adaptability of the biological bed to different water qualities, has uniform water distribution, and improves the water treatment effect.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A mobile biological bed for treating aquaculture water, characterized in that: It includes a housing, a reaction cylinder, and a diversion cavity. The reaction cylinder is located inside the housing and is coaxially arranged with the housing. A water storage cavity is provided at the bottom of the housing. A reaction channel is formed between the outer wall of the reaction cylinder, the inner wall of the housing, the top of the water storage cavity, and the outer wall of the diversion cavity. A filter plate is provided at the bottom of the reaction cylinder. The reaction cylinder is communicated with the water storage cavity through the filter plate. The bottom of the reaction cylinder is rotatably connected to the filter plate. The top of the reaction cylinder is rotatably connected to the bottom of the diversion cavity. The top of the reaction cylinder is open and communicated with the diversion cavity. An aeration device is provided on the filter plate. Biological carriers are provided in both the reaction channel and the reaction cylinder. The biological carriers are spherical. Micropores are provided on the surface of the biological carriers, and biological fillers are provided inside. A cover body is provided at the top of the housing, and a water inlet is provided on the cover body.

2. The mobile biological bed for treating water used in aquaculture according to claim 1, wherein: A plurality of uniformly arranged dial rods are provided on the outer side wall of the reaction cylinder, and the dial rods point into the reaction channel.

3. The mobile biological bed for treating water used in aquaculture according to claim 1, wherein: A chute one for the reaction cylinder to rotate is provided at the bottom of the diversion cavity. A slider one matching with the chute one is provided at the top of the reaction cylinder. The slider one is annular. A fixing plate is provided at the center of the slider one. A plurality of uniformly distributed reinforcing rods are provided circumferentially on the fixing plate. The fixing plate is connected to the slider one through the reinforcing rods. A rotating shaft is provided on the fixing plate. One end of the rotating shaft penetrates through the cover body and extends to the outside of the cover body. A gear one is provided at the end of the rotating shaft extending to the outside of the cover body. A gear two meshing with the gear one is provided outside the gear one. A motor with an output end connected to the gear two is provided on the cover body.

4. The mobile biological bed for treating water used in aquaculture according to claim 1, characterized in that: The cover body includes an upper cover body and a lower cover body. The upper cover body is slidably connected to the lower cover body. A slider two is provided on the upper cover body, and a chute two corresponding to the slider two is provided on the lower cover body. The upper cover body is in a hollow annular shape and is coaxially arranged with the lower cover body. A plurality of uniformly distributed water inlets are provided circumferentially on both the upper cover body and the lower cover body, and the water inlets on the upper cover body can be aligned and communicated with the water inlets on the lower cover body. A handle is provided on the upper cover body.

5. The mobile biological bed for treating water used in aquaculture according to claim 1, characterized in that: The aeration device includes an aeration plate and an aeration pipe. One end of the aeration pipe penetrates through the filter plate and is communicated with the aeration plate. Uniformly distributed aeration holes are provided on the aeration plate, and the aeration holes are arranged in a tapered shape with a narrow upper part and a wide lower part.

6. The mobile biological bed for treating water used in aquaculture according to claim 1, wherein: A drain pipe is provided on one side of the water storage cavity.

7. The mobile biological bed for treating aquaculture water according to claim 1, wherein: A circulation pipe is provided outside the housing. A circulation pump is provided on the circulation pipe. The two ends of the circulation pipe are respectively communicated with the upper and lower ends of the reaction channel.

8. The mobile biological bed for treating water used in aquaculture according to claim 1, characterized in that: The side walls at the top and bottom of the reaction cylinder are both in a grid setting.

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