Aquaculture tail water antibiotic adsorption device

Abstract

The utility model relates to an aquaculture tail water antibiotic adsorption device which comprises a treatment ditch, a first adsorption filler and a second adsorption filler which are detachable are arranged in the treatment ditch, each of the first adsorption filler and the second adsorption filler comprises a frame, and permeable limiting layers are arranged on the two side faces of each frame. An adsorption cavity is defined by the frame and the permeable limiting layer, a first adsorption layer is arranged in the adsorption cavity of the first adsorption filler, and a second adsorption layer is arranged in the adsorption cavity of the second adsorption filler; an inner cavity of the treatment ditch comprises a photocatalysis cavity, a photocatalyst is arranged in the photocatalysis cavity, and light supplementing equipment is arranged in the photocatalysis cavity or above the photocatalysis cavity. According to the utility model, two adsorption fillers are adopted for adsorbing different types of antibiotics respectively, so that the adsorption effect of the antibiotics can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment equipment, and in particular to an antibiotic adsorption device for aquaculture tailwater. Background Technology

[0002] Antibiotics can prevent and treat aquatic diseases and increase aquatic yields, thus they are widely used in the aquaculture industry. However, antibiotics are not completely absorbed by organisms after use. Instead, they enter the water body through excrement in the form of the antibiotic itself or its metabolites (conjugated forms, oxidation products, hydrolysis products, etc.). Antibiotics can damage the cellular structure and function of aquatic organisms, affecting normal reproduction, leading to an imbalance in the aquatic microbial population and disrupting the ecological balance. Therefore, antibiotics in aquaculture wastewater need to be treated before being discharged.

[0003] Currently, the ecological treatment method is adsorption, which uses adsorbents to absorb antibiotics in aquaculture wastewater. This can be referenced in utility model patent CN202322988296.X—Aquaculture Wastewater Antibiotic Adsorption Packing Column and Adsorption Tank. However, since aquaculture wastewater typically contains multiple types of antibiotics, such as tetracyclines, fluoroquinolones, sulfonamides, and chloramphenicol, adsorption methods usually only target one or two types of antibiotics, with poor adsorption efficiency for others. Furthermore, a certain amount of antibiotic residue remains in the aquaculture wastewater after adsorption treatment, resulting in poor antibiotic removal efficiency with a single treatment method. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an antibiotic adsorption device for aquaculture wastewater, thereby improving the removal efficiency of antibiotics.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: an antibiotic adsorption device for aquaculture wastewater, including a treatment ditch, in which a detachable first adsorption packing and a second adsorption packing are provided. Both the first and second adsorption packings include a frame, and water-permeable limiting layers are provided on both sides of the frame. The frame and the water-permeable limiting layers form an adsorption cavity. A first adsorption layer is provided in the adsorption cavity of the first adsorption packing, and a second adsorption layer is provided in the adsorption cavity of the second adsorption packing. The inner cavity of the treatment ditch includes a photocatalytic cavity, in which a photocatalyst is provided. A supplementary lighting device is provided inside or above the photocatalytic cavity.

[0006] Furthermore, the cross-section of the processing trench is rectangular, the frame is a rectangular border, and slots are provided on the bottom wall and side walls of the processing trench. The bottom edge and side edges of the frame are inserted into the slots.

[0007] Furthermore, a circulation pump is installed at the outlet of the treatment ditch, and the circulation pump is connected to a circulation pipe, which is connected to the inlet of the treatment ditch.

[0008] Furthermore, the supplemental lighting device includes a supplemental light.

[0009] Furthermore, the supplemental lighting device includes a convex lens mounted above the photocatalytic cavity.

[0010] Furthermore, a flexible support rope is suspended inside the photocatalytic cavity, and the photocatalyst is sprayed onto the outer wall of the support rope.

[0011] Furthermore, an aeration pipe is provided at the bottom of the photocatalytic chamber, and the aeration pipe is connected to an aeration fan.

[0012] Furthermore, the inlet end of the treatment ditch is equipped with a removable filter plate.

[0013] The beneficial effects of this utility model are: 1. This utility model uses two types of adsorption fillers to adsorb different types of antibiotics, which helps to improve the adsorption effect of antibiotics.

[0014] 2. This utility model adds a photocatalytic treatment facility. Photocatalysis generates strong oxidizing substances such as hydroxyl radicals under light conditions, thereby decomposing antibiotics in the water. This can further reduce the residual antibiotics in aquaculture tailwater and improve the removal effect of antibiotics. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front sectional view of this utility model;

[0016] Reference numerals: 1—treatment trench; 2—frame; 3—permeable limiting layer; 4—first adsorption layer; 5—second adsorption layer; 6—photocatalytic chamber; 7—circulation pump; 8—circulation pipe; 9—supplementary light; 10—convex lens; 11—support rope; 12—aeration pipe; 13—aeration blower; 14—filter plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] This utility model relates to an antibiotic adsorption device for aquaculture wastewater, such as... Figure 1 As shown, it includes a treatment ditch 1, which can be placed on the ground and made of concrete or metal, with a treatment chamber inside; or it can be a ditch excavated from the ground. One end of the treatment ditch 1 serves as the inlet for aquaculture wastewater, and the other end serves as the outlet. The treatment ditch 1 can be straight, or it can be L-shaped, U-shaped, or other shapes.

[0019] The treatment trench 1 is equipped with detachable first and second adsorption packing materials. Both materials are used to adsorb antibiotics from aquaculture wastewater. The first and second packing materials are detachable; once antibiotic adsorption reaches saturation, they can be removed and replaced with new ones. Both the first and second packing materials include a frame 2, which can be a metal frame (e.g., aluminum or steel profile) or a plastic frame. Water-permeable limiting layers 3 are provided on both sides of the frame 2. These layers can be made of permeable fabric, such as carbon fiber filter cloth, to ensure water can enter and exit the first and second packing materials. The frame 2 and the permeable limiting layers 3 form an adsorption chamber. The first adsorption layer 4 is located within the adsorption chamber of the first packing material, and the second adsorption layer 5 is located within the adsorption chamber of the second packing material. The first and second adsorption layers 4 and 5 use different adsorption materials to adsorb different types of antibiotics; existing technology can be used for these materials. For example, when the antibiotics in aquaculture wastewater are mainly tetracycline antibiotics, sodium acid modified materials can be used as adsorbents; when the antibiotics in aquaculture wastewater are mainly fluoroquinolone antibiotics, biochar can be used as adsorbents; and when the antibiotics in aquaculture wastewater are mainly sulfonamide antibiotics, graphene composite materials can be used as adsorbents.

[0020] Adsorption treatment is insufficient to completely remove antibiotics from aquaculture wastewater, leaving a certain amount of antibiotics remaining after adsorption. To further remove these antibiotics, the treatment ditch 1 of this invention includes a photocatalytic chamber 6, which contains a photocatalyst. A supplementary lighting device is installed inside or above the photocatalytic chamber 6. The photocatalytic chamber 6 can be located downstream of the first and second adsorption packing materials, where adsorption is followed by photocatalytic treatment. Existing technologies can be used for the photocatalyst, such as titanium dioxide, zinc oxide, and zirconium dioxide. Under ultraviolet and visible light irradiation, the photocatalyst in the water can generate strong oxidizing substances such as hydroxyl radicals, promoting the decomposition of antibiotics and other organic matter.

[0021] This invention employs two different adsorbents to adsorb multiple types of antibiotics, thereby improving the adsorption effect. Furthermore, by combining adsorption and photocatalytic treatment, the residual amount of antibiotics is reduced, further enhancing the removal efficiency.

[0022] To facilitate the installation and removal of the first and second adsorption packing materials, the treatment ditch 1 has a rectangular cross-section, and the frame 2 has a rectangular frame. Slots are provided on the bottom and side walls of the treatment ditch 1. The bottom edge of the frame 2 is inserted into the slot on the bottom wall of the treatment ditch 1, and the side edges of the frame 2 are inserted into the slots on the side walls of the treatment ditch 1. During installation, simply insert the first and second adsorption packing materials; during disassembly, simply pull them upwards. The operation is very convenient. Samples can be taken at the effluent of the treatment ditch 1 to test the antibiotic content. If the antibiotic content exceeds the standard, the first and second adsorption packing materials should be replaced.

[0023] To ensure treatment effectiveness, a circulation pump 7 is installed at the outlet of treatment ditch 1, and the circulation pump 7 is connected to a circulation pipe 8, which is connected to the inlet of treatment ditch 1. After adsorption and photocatalytic treatment, the aquaculture wastewater flows to the outlet of treatment ditch 1. The circulation pump 7 transports part of the wastewater to the inlet of treatment ditch 1, allowing some of the wastewater to re-enter treatment ditch 1 for further circulation treatment, which can further improve the treatment effect.

[0024] In this invention, the supplementary lighting device includes a supplementary light lamp 9. The supplementary light lamp 9 can be an ultraviolet lamp, installed on the bottom or side wall of the treatment trench 1. Furthermore, the supplementary lighting device may also include a convex lens 10 mounted above the photocatalytic cavity 6. When the weather is sunny and there is sufficient sunlight, the convex lens 10 can focus the sunlight into the photocatalytic cavity 6, providing sufficient light to ensure the normal operation of photocatalysis. At this time, it is not necessary to turn on the supplementary light lamp 9, thus reducing energy consumption.

[0025] To ensure the photocatalyst remains suspended in the water, a flexible support rope 11 is suspended inside the photocatalytic chamber 6, with the photocatalyst powder sprayed onto the outer wall of the support rope 11. The support rope 11 can be any suitable rope available, such as a plastic rope. After the photocatalyst powder is sprayed onto the outer wall of the support rope 11, the overall density of the photocatalyst and the support rope 11 is greater than the density of water. Therefore, a suspension rod can be installed at the top of the photocatalytic chamber 6, with the upper end of the support rope 11 suspended from the rod, and the lower part of the support rope 11 submerged in the water. When the water flows, the flexible support rope 11 can undulate, promoting full and uniform contact between the photocatalyst on the surface of the support rope 11 and the water. To ensure the photocatalyst remains stably on the surface of the support rope 11, an appropriate amount of waterproof adhesive can be sprayed onto the surface of the support rope 11 before the photocatalyst is sprayed onto it.

[0026] To increase the oxygen content in the water, this invention includes an aeration pipe 12 at the bottom of the photocatalytic chamber 6, connected to an aeration fan 13. The aeration fan 13 is positioned in the external air, delivering air to the aeration pipe 12. The aeration pipe 12 has multiple aeration micropores, allowing air to enter the water through these micropores, increasing the oxygen content. Simultaneously, the incoming air disturbs the water, promoting full contact between the water and the photocatalyst.

[0027] The inlet end of the treatment ditch 1 is equipped with a detachable filter plate 14, which can also be plugged into the treatment ditch 1. The filter plate 14 can filter out solid impurities in the water.

[0028] The specific processing flow of this utility model is as follows: First, samples of the aquaculture wastewater to be treated are taken and tested to determine the types of antibiotics with high concentrations in the wastewater. Then, based on the types of antibiotics with high concentrations, two corresponding adsorbent materials are selected, each of which can effectively adsorb one or two antibiotics. Next, a first adsorbent packing material and a second adsorbent packing material are prepared, and the two adsorbent materials are respectively loaded into the first and second adsorbent packing materials, which are then installed in the treatment ditch 1. Then, the aquaculture wastewater is introduced into the treatment ditch 1, where the first and second adsorbent packing materials adsorb the antibiotics with high concentrations. Residual antibiotics are decomposed through photocatalysis, ensuring that the antibiotic content in the aquaculture wastewater meets discharge requirements.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An aquaculture effluent antibiotic adsorption device, characterized by: The application relates to a treatment ditch (1) provided with detachable first and second adsorption fillers, wherein the first and second adsorption fillers each comprise a frame (2) provided with a water-permeable limiting layer (3) on two sides of the frame (2), the frame (2) and the water-permeable limiting layer (3) forming an adsorption cavity, the first adsorption filler is provided with a first adsorption layer (4) in the adsorption cavity, and the second adsorption filler is provided with a second adsorption layer (5) in the adsorption cavity; the inner cavity of the treatment ditch (1) comprises a photocatalytic cavity (6) provided with a photocatalyst, and the photocatalytic cavity (6) is provided with a light supplementing device inside or above the photocatalytic cavity (6).

2. An aquaculture effluent antibiotic adsorption device as claimed in claim 1, wherein: The treatment ditch (1) is rectangular in section, the frame (2) is a rectangular frame, the bottom wall and the two side walls of the treatment ditch (1) are provided with insertion grooves, and the bottom edge and the two side edges of the frame (2) are inserted into the insertion grooves.

3. The aquaculture effluent antibiotic adsorption device of claim 1, wherein: A circulating pump (7) is arranged at the water outlet of the treatment ditch (1), the circulating pump (7) is connected with a circulating pipe (8), and the circulating pipe (8) is connected with the water inlet of the treatment ditch (1).

4. The aquaculture effluent antibiotic adsorption device of claim 1, wherein: The light supplementing device comprises a light supplementing lamp (9).

5. The aquaculture effluent antibiotic adsorption device of claim 1, wherein: The light supplementing device comprises a convex lens (10) arranged above the photocatalytic cavity (6).

6. The recirculating aquaculture antibiotic adsorption device of claim 1, wherein: A flexible supporting rope (11) is hung in the photocatalytic cavity (6), and the photocatalyst is sprayed on the outer wall of the supporting rope (11).

7. The aquaculture recirculating system antibiotic adsorption device of claim 1, wherein: An aeration pipe (12) is arranged at the bottom of the photocatalytic cavity (6), and the aeration pipe (12) is connected with an aeration fan (13).

8. The aquaculture effluent antibiotic adsorption device of claim 1, wherein: A detachable filter plate (14) is arranged at the water inlet end of the treatment ditch (1).

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