Land-based barrel culture tail water treatment system

Abstract

The utility model discloses a land-based barrel culture tail water treatment system which is characterized in that when a drainage pipe of a land-based barrel fills culture tail water into a sedimentation tank, the culture tail water flows over a wall body between the sedimentation tank and a purification tank through four layers of filter screens to enter the purification tank, and then reaches a water collection pipe at the bottom of a biological brush through the biological brush in the purification tank; the tail water flows into the bottom of the nitrification tank through a water collecting pipe, is treated by a fluidized bed and an aeration device in the nitrification tank, reaches the upper part of the nitrification tank, enters the clean water tank through a filter dam, is treated by emergent aquatic plants in the clean water tank, and flows back into the land-based barrel through a water supply pipe; the aim of deeply treating the tail water is fulfilled; therefore, the aquaculture tail water treatment device effectively improves the aquaculture tail water treatment effect, facilitates secondary cyclic utilization of the aquaculture tail water in the land-based barrel, and improves the utilization rate of water resources.

Description

Technical Field

[0001] The utility model belongs to the technical field of aquaculture tail water treatment, in particular to a land-based drum aquaculture tail water treatment system. Background Art

[0002] Land-based barrel aquaculture is a new type of aquaculture model. It sets up circular aquaculture barrels on the ground and equips them with corresponding tailwater treatment systems to achieve high-density intensive ecological aquaculture.

[0003] The existing land-based drum aquaculture tailwater treatment system has the following problems: 1) The treatment process is simple. The existing system only relies on a single purification pond for tailwater treatment. The treatment method is relatively simple and it is difficult to effectively remove harmful substances such as ammonia nitrogen and nitrite in the tailwater; 2) The purification effect is limited. Although the purification pond has a certain natural purification capacity, its purification effect is often limited for high-concentration aquaculture tailwater, and it is difficult to ensure that the water quality of the circulating water meets the aquaculture requirements; 3) Lack of efficient treatment equipment. The system may lack efficient solid-liquid separation, biodegradation and other treatment equipment, resulting in difficulty in effectively removing solids, suspended matter, etc. in the tailwater. Utility Model Content

[0004] The utility model provides a land-based drum aquaculture tail water treatment system, which can solve the problem in the prior art that the aquaculture tail water has high contents of ammonia nitrogen, nitrite, suspended solids, etc., making it difficult to ensure that the circulating water meets the aquaculture requirements.

[0005] In order to solve the above problems, the technical solutions provided by the present invention are as follows:

[0006] The embodiment of the utility model provides a land-based drum aquaculture tailwater treatment system, comprising a land-based drum (18), a sedimentation tank (1), a purification tank (2), a nitrification tank (3) and a clean water tank (4):

[0007] Four layers of filter screens (6) are arranged at intervals in the sedimentation tank (1), biological brushes (9) are hung in the purification tank (2), a fluidized bed (11) and an aeration device (12) are arranged in the nitrification tank (3), a first crushed stone (17) and a water supply pipe (14) are arranged in the clean water tank (4), and emergent plants (13) are planted on the first crushed stone (17); the height of the wall between the sedimentation tank (1) and the purification tank (2) is lower than the height of the wall on the other side of the purification tank (2), a water collection pipe (10) is installed at the bottom of the purification tank (2) and the nitrification tank (3), and a plurality of holes are arranged on the water collection pipe 10, and a filter dam (15) is arranged between the nitrification tank (3) and the clean water tank (4), and the filter dam (15) is composed of a wire mesh (16) filled with second crushed stone;

[0008] When the drainage pipe (5) of the land-based drum (18) adds aquaculture tail water into the sedimentation tank (1), the aquaculture tail water flows through the four layers of filter screens (6) over the wall between the sedimentation tank (1) and the purification tank (2) and enters the purification tank (2). Then, the tail water passes through the biological brushes (9) in the purification tank (2) and reaches the water collection pipe (10) at the bottom thereof. Then, the tail water flows into the bottom of the nitrification tank (3) through the water collection pipe (10). Then, the tail water is processed by the fluidized bed (11) and the aeration device (12) in the nitrification tank (3) and reaches the upper part of the nitrification tank (3). Then, the tail water is filtered by the filter dam (15) and enters the clean water tank (4). Then, the tail water is processed by the emergent plants (13) in the clean water tank (4) and flows back to the four land-based drums (18) through the water supply pipe (14).

[0009] According to an optional embodiment of the present invention, the bottoms of the sedimentation tank (1), the purification tank (2), the nitrification tank (3) and the clean water tank (4) are all provided with drainage holes (7), and the drainage holes (7) are connected to a drainage pipe (8).

[0010] According to an optional embodiment of the present invention, the drainage pipe (5), the sewage pipe (8), the water collection pipe (10) and the water supply pipe (14) are all made of hard PVC water pipes.

[0011] Compared with the existing technology, the present invention provides a land-based drum aquaculture tailwater treatment system with the following beneficial effects: (1) By setting up 4 layers of filter screens in the sedimentation tank, most of the sediment in the tailwater can be removed, effectively reducing the content of suspended matter in the tailwater. (2) Biological brushes are suspended in the purification tank, which is conducive to the growth of microorganisms and can remove organic matter and nutrients such as nitrogen and phosphorus. (3) The nitrification tank is equipped with a fluidized bed and an aeration device to remove ammonia nitrogen and nitrite through nitrification reaction. (4) The clean water tank is mainly planted with emergent plants, and the tailwater is deeply treated through the absorption of the plants for recycling. Therefore, the tailwater treatment system effectively improves the treatment effect of aquaculture tailwater, is conducive to entering the land-based drum for secondary recycling, and improves the utilization rate of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments or prior art, the following briefly introduces the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A three-dimensional diagram of a land-based drum aquaculture system provided in an embodiment of the present application.

[0014] Figure 2 This is a front view of a sedimentation tank, purification tank, nitrification tank, and clean water tank of a land-based drum aquaculture system provided in an embodiment of the present application.

[0015] Figure 3 A cross-sectional view of a sedimentation tank, purification tank, nitrification tank, and clean water tank of a land-based drum aquaculture system provided in an embodiment of the present application.

[0016] Figure 4 The working principle of a land-based drum farming system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0018] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides a land-based drum aquaculture tailwater treatment system, comprising a land-based drum 18, a sedimentation tank 1, a purification tank 2, a nitrification tank 3, and a water purification tank 4. The sedimentation tank 1, purification tank 2, nitrification tank 3, and water purification tank 4 are all constructed of bricks and cement, which effectively increases the service life of the tailwater treatment system. The number of land-based drums 18 in this embodiment can be set based on actual needs and can be one or more.

[0019] Four layers of filter screens 6 are arranged at intervals in the sedimentation tank 1, and the apertures of the four layers of filter screens 6 gradually decrease from front to back. The sedimentation tank 1 is divided into five small areas, and the above-mentioned device can effectively remove suspended solids and reduce the clogging of the filter screen 6. Biological brushes 9 are hung in the purification tank 2, and the biological brushes can remove organic matter in the tail water. A fluidized bed 11 and an aeration device 12 are provided in the nitrification tank 3, which mainly carry out nitrification reaction on the tail water. A first gravel 17 and a water supply pipe 14 are provided in the clean water tank 4, and emergent plants 13 are planted on the first gravel 17. The emergent plants 13 mainly further process the tail water and absorb the remaining nutrients to achieve the recycling of the tail water.

[0020] The height of the wall between the sedimentation tank 1 and the purification tank 2 is lower than the height of the wall on the other side of the purification tank 2. A water collection pipe 10 is installed at the bottom of the purification tank 2 and the nitrification tank 3. The water collection pipe 10 is provided with multiple holes. The water from the purification tank 2 passes through the water collection pipe 10 at the bottom to the bottom of the nitrification tank 3. A filter dam 15 is provided between the nitrification tank 3 and the clean water tank 4. The filter dam 15 is composed of a wire mesh 16 filled with second gravel. The filter dam 15 is set close to one side of the nitrification tank 3. The water from the nitrification tank 3 enters the clean water tank 4 through the filter dam 15, and the water from the clean water tank 4 circulates into the land-based barrel through the water supply pipe 14. The tailwater treatment system adopts the above configuration to better perform deep treatment of the tailwater.

[0021] Sedimentation tank 1, purification tank 2, nitrification tank 3, and clean water tank 4 are all equipped with drainage holes 7 at the bottom, which are connected to drainage pipes 8. Drain holes 7 allow sludge generated during the treatment process to be discharged, preventing clogging. Drain pipes 5, 8, water collection pipes 10, and water supply pipes 14 are all made of rigid PVC, a material that increases their service life.

[0022] Figure 4 Combine Figure 1 and Figure 3 As shown, the working principle and usage process of the utility model are as follows: after the tailwater treatment system is built, the user first checks whether there are any leaks outside the sedimentation tank 1, the purification tank 2, the nitrification tank 3 and the clean water tank 4 to confirm that the tailwater treatment system is in a normal working state. The user adds aquaculture tailwater to the sedimentation tank 1 through the drainage pipe 5 of the land-based drum 18. The aquaculture tailwater then flows through the four layers of filter screen 6, overflows the wall between the sedimentation tank 1 and the purification tank 2, enters the purification tank 2, and then passes through the biological brushes 9 in the purification tank 2 to reach the water collection pipe 10 at the bottom thereof. The tailwater then flows through the water collection pipe 10 to the bottom of the nitrification tank 3. The tailwater is then processed by the fluidized bed 11 and aeration device 12 in the nitrification tank 3 and reaches the upper part of the nitrification tank 3. The tailwater is then filtered by the filter dam 15 and enters the clean water tank 4. The tailwater is then processed by the emergent plants 13 in the clean water tank 4 and then flows back to the land-based drum 18 through the water supply pipe 14, achieving the purpose of deep treatment of the tailwater.

[0023] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A land-based drum aquaculture tailwater treatment system, characterized in that: It includes a land-based drum (18), a sedimentation tank (1), a purification tank (2), a nitrification tank (3) and a clean water tank (4): Four layers of filter screens (6) are arranged at intervals in the sedimentation tank (1), biological brushes (9) are hung in the purification tank (2), a fluidized bed (11) and an aeration device (12) are arranged in the nitrification tank (3), a first crushed stone (17) and a water supply pipe (14) are arranged in the clean water tank (4), and emergent plants (13) are planted on the first crushed stone (17); the height of the wall between the sedimentation tank (1) and the purification tank (2) is lower than the height of the wall on the other side of the purification tank (2), a water collection pipe (10) is installed at the bottom of the purification tank (2) and the nitrification tank (3), and a plurality of holes are arranged on the water collection pipe (10); a filter dam (15) is arranged between the nitrification tank (3) and the clean water tank (4), and the filter dam (15) is composed of a wire mesh (16) filled with second crushed stone; When the drainage pipe (5) of the land-based drum (18) adds aquaculture tail water into the sedimentation tank (1), the aquaculture tail water flows through the four-layer filter screen (6) over the wall between the sedimentation tank (1) and the purification tank (2) and enters the purification tank (2). Then, the tail water passes through the biological brush (9) in the purification tank (2) and reaches the water collection pipe (10) at the bottom thereof. Then, the tail water flows into the bottom of the nitrification tank (3) through the water collection pipe (10). Then, the tail water is processed by the fluidized bed (11) and the aeration device (12) in the nitrification tank (3) and reaches the upper part of the nitrification tank (3). Then, the tail water is filtered by the filter dam (15) and enters the clean water tank (4). Then, the tail water is processed by the emergent plants (13) in the clean water tank (4) and flows back to the land-based drum (18) through the water supply pipe (14).

2. A land-based drum aquaculture tailwater treatment system according to claim 1, characterized in that: The bottoms of the sedimentation tank (1), the purification tank (2), the nitrification tank (3) and the clean water tank (4) are all provided with drainage holes (7), and the drainage holes (7) are connected to a drainage pipe (8).

3. A land-based drum aquaculture tailwater treatment system according to claim 2, characterized in that: The drainage pipe (5), the sewage pipe (8), the water collection pipe (10) and the water supply pipe (14) are all made of hard PVC water pipes.

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