Mariculture tail water treatment system

Abstract

The utility model discloses a mariculture tail water treatment system. The mariculture tail water treatment system comprises a water inlet pump, a system main body treatment pond, a bacteria-algae bed and a plant floating bed, the water inlet pump is communicated with the system main body treatment pond through a water inlet pipeline, and the water inlet pump is used for inputting mariculture tail water into the system main body treatment pond; the bacteria-algae bed and the plant floating bed are both arranged in the system main body treatment pond, the bacteria-algae bed is used for expanding cultivation of beneficial bacteria and algae species, and the plant floating bed is used for absorbing and fixing nitrogen and phosphorus in water in the system main body treatment pond through developed root systems of planted plants to achieve the purpose of water purification. The mariculture tail water treatment system has the advantages of being small in occupied area, low in energy consumption and the like, can efficiently degrade organic pollutants, nitrogen, phosphorus and the like in mariculture tail water, and has the advantages of being environmentally friendly, clean and the like.

Description

Technical Field

[0001] The utility model relates to the technical fields of aquaculture and water treatment, in particular to a seawater aquaculture tail water treatment system. Background Art

[0002] As the world's largest producer of aquatic products, my country accounts for over one-third of global marine aquaculture production. In recent years, the sustainable development of the marine aquaculture industry has led to stricter regulations for the discharge of marine aquaculture tailwater. Therefore, finding an economical and efficient method for treating marine aquaculture tailwater is a pressing issue. The traditional three-pond, two-dam process boasts high removal efficiencies for organic pollutants, nitrogen, and phosphorus, and is simple to operate and maintain. While widely used in freshwater aquaculture, its application in marine aquaculture remains limited. Utility Model Content

[0003] Based on this, it is necessary to provide a seawater aquaculture tailwater treatment system. The seawater aquaculture tailwater treatment system of the utility model has the advantages of small footprint and low energy consumption, and can efficiently degrade organic pollutants, nitrogen, phosphorus, etc. in seawater aquaculture tailwater, and has the advantages of green cleaning.

[0004] An embodiment of the present application provides a seawater aquaculture tailwater treatment system.

[0005] A seawater aquaculture tailwater treatment system comprises an inlet pump, a main system treatment pool, a bacteria-algae bed and a plant floating bed. The inlet pump is connected to the main system treatment pool via an inlet pipe. The inlet pump is used to input seawater aquaculture tailwater into the main system treatment pool. The bacteria-algae bed and the plant floating bed are both arranged in the main system treatment pool. The bacteria-algae bed is used to cultivate beneficial bacteria and algae species. The plant floating bed is used to absorb and fix nitrogen and phosphorus in the water of the main system treatment pool through the developed root system of the planted plants, thereby achieving the purpose of water purification.

[0006] In some embodiments, the seawater aquaculture tailwater treatment system further includes a filter, which is arranged on the water inlet pipe and located between the water inlet pump and the system main treatment tank, and is used to intercept most of the suspended matter in the aquaculture tailwater.

[0007] In some embodiments, the beneficial bacteria cultured in the bacterial-algal bed include one or more of EM bacteria, photosynthetic bacteria, denitrifying bacteria and nitrifying bacteria.

[0008] In some embodiments, the algae species cultured in the bacterial and algal bed include Chlorella, a genus of the phylum Chlorophyta that has strong water purification capabilities.

[0009] In some embodiments, the plant floating bed is also connected to a breeding cage, in which aquatic economic species including oysters are cultured. The aquatic economic species including oysters in the breeding cage can synergize with the algae and bacteria in the bacterial and algae bed to achieve the absorption and fixation of nitrogen and phosphorus.

[0010] In some embodiments, the seawater aquaculture tailwater treatment system further includes a circulating water truck, which is disposed in the main treatment tank of the system. The circulating water truck is used to circulate and stir the water in the main treatment tank of the system and maintain the dissolved oxygen concentration of the water in the main treatment tank of the system within a certain range.

[0011] In some embodiments, the seawater aquaculture tailwater treatment system further includes a drainage well, which is arranged adjacent to the main treatment pool of the system. A drainage channel is connected to the water outlet at the upper position of the main treatment pool of the system, and the main treatment pool of the system is connected to the drainage well through the drainage channel.

[0012] In some embodiments, the seawater aquaculture tailwater treatment system further includes a water outlet interception device, which is arranged at the outlet of the system main treatment tank, and is used to intercept solid debris in the purified water discharged from the system main treatment tank.

[0013] In some embodiments, the plant floating bed is a seahorse tooth floating bed, in which floating plants and emergent plants including seahorse teeth are planted.

[0014] In some embodiments, there are multiple bacterial and algal beds.

[0015] In some embodiments, there are multiple plant floating beds.

[0016] The aforementioned marine aquaculture tailwater treatment system, based on the traditional three-pond-two-dam system, develops ecological purification units in the marine aquaculture field to construct a marine aquaculture tailwater treatment system to achieve efficient removal of organic matter, nitrogen, and phosphorus, providing a new approach for actual marine aquaculture tailwater treatment. Specifically, the marine aquaculture tailwater treatment system proposed in this application has the advantages of small footprint and low energy consumption. It primarily utilizes an algae / bacteria-shellfish-plant approach, offering advantages such as green cleaning and efficient degradation of organic pollutants, nitrogen, and phosphorus in marine aquaculture tailwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0018] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0019] Figure 1 This is a schematic diagram of a seawater aquaculture tailwater treatment system according to one embodiment of the present utility model.

[0020] Description of Reference Numerals

[0021] 10. Marine aquaculture tailwater treatment system; 100. Water inlet pump; 200. System main treatment tank; 300. Bacteria and algae bed; 400. Plant floating bed; 500. Filter; 600. Breeding cage; 700. Circulating water truck; 800. Drainage well; 900. Drainage channel; 1000. Outlet interception device. DETAILED DESCRIPTION

[0022] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0026] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] As used herein, "optionally," "optional," and "optional" mean optional, meaning that the option is selected from either of the two parallel options of "with" or "without." If multiple "optional" options appear in a technical solution, each option is independent unless otherwise specified and there are no contradictions or mutual constraints. In this application, expressions such as "optionally contain" and "optionally include" mean "contain or not contain."

[0029] The present application provides a marine aquaculture tailwater treatment system to address at least one of the following technical issues in the prior art: (1) the lack of existing marine aquaculture tailwater treatment processes; (2) the high energy consumption, backward technology, and low treatment efficiency of existing aquaculture tailwater treatment processes; and (3) the difficulty of applying the conventional three-pond, two-dam process to the field of marine aquaculture tailwater treatment. The marine aquaculture tailwater treatment system will be described below with reference to the accompanying drawings.

[0030] The marine aquaculture tailwater treatment system 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 Schematic diagram of the structure of a marine aquaculture tail water treatment system 10 provided in an embodiment of the present application. The marine aquaculture tail water treatment system 10 of the present application can be used for marine aquaculture tail water treatment.

[0031] In order to more clearly illustrate the structure of the seawater aquaculture tailwater treatment system 10 , the seawater aquaculture tailwater treatment system 10 will be introduced below with reference to the accompanying drawings.

[0032] For example, see Figure 1 As shown, Figure 1 A schematic structural diagram of a seawater aquaculture tailwater treatment system 10 provided in an embodiment of the present application. A seawater aquaculture tailwater treatment system 10 comprises an inlet pump 100, a system main treatment tank 200, a bacteria-algae bed 300, and a plant floating bed 400. The inlet pump 100 is connected to the system main treatment tank 200 via an inlet pipe. The inlet pump 100 is used to input seawater aquaculture tailwater into the system main treatment tank 200. The bacteria-algae bed 300 and the plant floating bed 400 are both arranged in the system main treatment tank 200. The bacteria-algae bed 300 is used to expand the cultivation of beneficial bacteria and algae species. The plant floating bed 400 is used to absorb nitrogen and phosphorus in the water of the system main treatment tank 200 through the developed root system of the planted plants, thereby achieving the purpose of water purification.

[0033] The aforementioned marine aquaculture tailwater treatment system 10, based on the traditional three-pond, two-dam system, develops ecological purification units in the marine aquaculture field to construct a marine aquaculture tailwater treatment system 10, achieving efficient removal of organic matter, nitrogen, and phosphorus, thereby providing a new method for actual marine aquaculture tailwater treatment. Specifically, the marine aquaculture tailwater treatment system 10 proposed in this application has the advantages of small footprint and low energy consumption. It primarily utilizes an algae / bacteria-shellfish-plant method, offering advantages such as green cleaning, and can efficiently degrade organic pollutants, nitrogen, and phosphorus in marine aquaculture tailwater.

[0034] In some embodiments, the seawater aquaculture tailwater treatment system 10 further includes a filter 500. The filter 500 is provided on the water inlet pipe and is located between the water inlet pump 100 and the system main treatment tank 200. The filter 500 is used to intercept most of the suspended matter in the aquaculture tailwater. It should be noted that the filter 500 of the present system only provides the function of intercepting large-particle suspended matter, and its form may also be in the form of a sedimentation tank or any form that achieves the same effect. Preferably, the filter 500 includes a filter screen, activated carbon, a flocculant, and the like.

[0035] In some embodiments, the bacteria-algae bed 300 provides favorable biofilm formation conditions for the expansion of beneficial bacteria and algae species. The beneficial bacteria cultivated in the bacteria-algae bed 300 include one or more of EM bacteria, photosynthetic bacteria, denitrifying bacteria, and nitrifying bacteria.

[0036] EM bacteria, short for "Effective Microorganisms," is a mixture of beneficial microorganisms, including lactic acid bacteria, yeasts, and photosynthetic bacteria, in specific proportions. These microorganisms are commonly found in nature and have been combined through specialized cultivation techniques to promote plant growth, improve soil structure, and increase crop yields. EM bacteria have a wide range of applications, including but not limited to the following: Agriculture: In agricultural production, EM bacteria can be used as a biofertilizer to improve soil quality, promote crop growth, and reduce the use of chemical fertilizers and pesticides, thereby achieving the goal of ecological agriculture. Environmental remediation: EM bacteria are also used to treat organic waste, such as kitchen waste and livestock manure, by accelerating the decomposition of organic matter, reducing odors, and converting waste into valuable fertilizer or energy resources. Aquaculture: In aquaculture, EM bacteria can help purify water quality, improve the aquatic environment, promote the healthy growth of aquatic organisms, and increase aquaculture efficiency.

[0037] Photosynthetic bacteria are a class of prokaryotic microorganisms that can use light energy for photosynthesis. Unlike green plants and other algae, photosynthetic bacteria have a unique photosynthetic mechanism. They typically perform photosynthesis in anoxic environments and do not produce oxygen. These bacteria are mainly divided into several different categories, including purple sulfur bacteria, green sulfur bacteria, purple non-sulfur bacteria, and green non-sulfur bacteria. Characteristics of photosynthetic bacteria: Anoxygenic photosynthesis: Photosynthetic bacteria do not release oxygen during photosynthesis because they use other compounds such as hydrogen sulfide or organic acids as electron donors rather than water. Strong adaptability: Photosynthetic bacteria can survive in a wide range of environments, including freshwater, seawater, hot springs, salt lakes, and even in some extreme conditions. Diverse nutritional modes: In addition to photosynthesis, some photosynthetic bacteria can obtain energy through fermentation or respiration, demonstrating strong metabolic flexibility.

[0038] Denitrifying bacteria are microorganisms that, under anoxic conditions, reduce nitrate to nitrite, and then to nitrogen gas. This process, known as denitrification, is a crucial step in the nitrogen cycle. Denitrification helps reduce nitrate levels in water and soil, preventing eutrophication and soil pollution.

[0039] Nitrifying bacteria are microorganisms that oxidize ammonia or ammonium ions into nitrates. This process, called nitrification, is a key step in the nitrogen cycle.

[0040] In some embodiments, the algae species cultivated in the bacterial and algal bed 300 include Chlorella, a genus of the Chlorophyta phylum, which has a strong ability to purify water.

[0041] It should be noted that the algae / bacteria can be any beneficial algae or bacterial species with water treatment effects. Preferably, the algae is Chlorella, a genus of the Chlorophyta phylum with strong water purification capabilities. The beneficial bacterial species are mainly EM bacteria and photosynthetic bacteria, with denitrifying and nitrifying bacteria added as appropriate.

[0042] In some embodiments, the plant floating bed 400 is further connected to a breeding cage 600. Aquatic economic species including oysters are cultured in the breeding cage 600. The aquatic economic species including oysters in the breeding cage can synergize with the algae and bacteria in the algae bed to achieve the absorption and fixation of nitrogen and phosphorus. Considering the closed loop of the ecosystem and the need for timely renewal of aging algae species, a hoisting breeding cage 600 is placed on the plant floating bed 400. On the one hand, oysters, as secondary consumers, can synthesize their own cell structures by consuming excess algae in the system through filter feeding, thereby achieving the ultimate fixation of organic matter, nitrogen and phosphorus. The oysters in the breeding cage 600 can achieve a synergistic effect with the algae / bacteria to efficiently fix organic matter, nitrogen and phosphorus. On the other hand, products such as oysters as economic products can also bring certain economic benefits.

[0043] In some embodiments, preferably, the breeding cage 600 is connected to the bottom of the plant floating bed 400 .

[0044] In some embodiments, the marine aquaculture tailwater treatment system 10 further includes a circulating waterwheel 700. The circulating waterwheel 700 is disposed within the main treatment tank 200 of the system. The circulating waterwheel 700 is used to circulate and agitate the water in the main treatment tank 200 of the system and maintain the dissolved oxygen concentration in the water in the main treatment tank 200 within a certain range.

[0045] In some embodiments, the marine aquaculture tailwater treatment system 10 further includes a drainage well 800. The drainage well 800 is located adjacent to the main treatment tank 200. A drainage channel 900 is connected to the water outlet at the upper portion of the main treatment tank 200. The main treatment tank 200 is connected to the drainage well 800 via the drainage channel 900.

[0046] In some embodiments, the marine aquaculture tailwater treatment system 10 further includes an outlet interception device 1000. The outlet interception device 1000 is disposed at the outlet of the system main treatment tank 200. The outlet interception device 1000 is used to intercept solid debris from the purified water discharged from the system main treatment tank 200.

[0047] In some embodiments, the plant floating bed 400 is a seahorse floating bed. Floating plants and emergent plants, including seahorses, are planted in the seahorse floating bed. Seahorses can absorb nitrogen and phosphorus in sewage through their developed root systems to achieve the purpose of water purification.

[0048] In some embodiments, there are multiple bacterial and algal beds 300.

[0049] In some embodiments, there are multiple floating plant beds 400 .

[0050] It should be noted that the carrier fillers used in the bacteria-algae bed 300 and the plant floating bed 400 are not limited to specific products such as the bacteria-algae bed 300, but include any carrier materials that are conducive to the symbiosis of bacteria and algae biofilm.

[0051] The main advantages of the system for treating marine aquaculture effluent proposed in this application are as follows: it utilizes a symbiotic system of bacteria and algae to fix organic matter, nitrogen and phosphorus, without the need for additional chemical agents, etc., making it greener and cleaner; the constructed ecological chain of algae / bacteria + shellfish + plants has the dual attributes of pollutant removal and economic effects; it effectively addresses the technological gap in the field of marine aquaculture effluent treatment and has a specific and good removal effect on marine aquaculture effluent.

[0052] In summary, compared with traditional technologies, the present invention has the following beneficial effects on the treatment of marine aquaculture tail water:

[0053] (1) The system for treating marine aquaculture tail water can be effectively applied to the treatment process of marine aquaculture tail water, with high treatment efficiency and green and clean characteristics.

[0054] (2) The algae / bacteria + shellfish + plant ecological chain system technology constructed by this patent is more complete, does not require additional energy consumption, and has high management efficiency.

[0055] (3) This patent optimizes and improves the traditional three-pond-two-dam concept, making it suitable for the treatment process of various marine aquaculture tailwater fields.

[0056] (4) This patent has the dual attributes of pollutant removal and economic crop collection, providing favorable economic value conditions for the construction of actual projects.

[0057] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A marine aquaculture tailwater treatment system, characterized in that: It includes a water inlet pump, a system main treatment pool, a bacteria-algae bed and a plant floating bed. The water inlet pump is connected to the system main treatment pool through an inlet pipe. The water inlet pump is used to input seawater aquaculture tail water into the system main treatment pool. The bacteria-algae bed and the plant floating bed are both arranged in the system main treatment pool. The bacteria-algae bed is used to expand the cultivation of beneficial bacteria and algae species. The plant floating bed is used to absorb and fix nitrogen and phosphorus in the water of the system main treatment pool through the developed root system of the planted plants, so as to achieve the purpose of water purification.

2. The marine aquaculture tailwater treatment system according to claim 1, characterized in that: The seawater aquaculture tailwater treatment system further comprises a filter, which is arranged on the water inlet pipe and located between the water inlet pump and the main treatment tank of the system, and is used to intercept most of the suspended matter in the aquaculture tailwater.

3. The marine aquaculture tailwater treatment system according to claim 1, characterized in that: The beneficial bacteria species cultured in the bacteria-algae bed include one or more of EM bacteria, photosynthetic bacteria, denitrifying bacteria and nitrifying bacteria.

4. The marine aquaculture tailwater treatment system according to claim 1, characterized in that: The algae species cultured in the bacterial and algal bed include Chlorella genus of the Chlorophyta which has a strong ability to purify water quality.

5. The marine aquaculture tail water treatment system according to any one of claims 1 to 4, characterized in that: The plant floating bed is also connected to a breeding cage, in which aquatic economic species including oysters are cultured. The aquatic economic species including oysters in the breeding cage can synergize with the algae and bacteria in the bacterial and algae bed to achieve the absorption and fixation of nitrogen and phosphorus.

6. The marine aquaculture tailwater treatment system according to any one of claims 1 to 4, characterized in that: The seawater aquaculture tailwater treatment system also includes a circulating water wheel, which is arranged in the main treatment tank of the system. The circulating water wheel is used to circulate and stir the water in the main treatment tank of the system and maintain the dissolved oxygen concentration of the water in the main treatment tank of the system within a certain range.

7. The marine aquaculture tailwater treatment system according to any one of claims 1 to 4, characterized in that: The seawater aquaculture tailwater treatment system also includes a drainage well, which is arranged adjacent to the system main treatment pool. The water outlet at the upper position of the system main treatment pool is connected to a drainage channel, and the system main treatment pool is connected to the drainage well through the drainage channel.

8. The marine aquaculture tailwater treatment system according to any one of claims 1 to 4, characterized in that: The seawater aquaculture tailwater treatment system further comprises a water outlet interception device, which is arranged at the water outlet of the main treatment pool of the system and is used to intercept solid debris from the purified water discharged from the main treatment pool of the system.

9. The marine aquaculture tailwater treatment system according to any one of claims 1 to 4, characterized in that: The plant floating bed is a seahorse tooth floating bed, in which floating plants and emergent plants including seahorse teeth are planted.

10. The marine aquaculture tail water treatment system according to any one of claims 1 to 4, characterized in that: There are multiple bacterial and algal beds; And / or, there are multiple plant floating beds.

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