Fresh water aquaculture particulate matter rapid removal system

Abstract

The utility model provides a fresh water aquaculture particulate matter rapid removal system which comprises a multi-stage separator, a microfilter, an ozone air floatation system, a foam separator and a remote control terminal which are connected in sequence, and the multi-stage separator, the microfilter, the ozone air floatation system and the foam separator are all connected with the remote control terminal. Breeding tail water in the breeding pond is sequentially purified stage by stage through a multi-stage separator, a microfilter, a steam-water mixing tank and a foam separator, and then is conveyed to the ecological pond for up-to-standard discharge; wherein the multi-stage separator is provided with a vertical flow precipitator and a rotational flow precipitator which are connected in sequence, and the microstrainer is connected with the steam-water mixing tank through an ultraviolet sterilization pipe; the ozone air flotation system comprises an air compressor, an air dryer, an ozone generator and a steam-water mixing tank which are connected in sequence; the steam-water mixing tank is connected between the micro-filter and the foam separator. The problem that fine particles in freshwater aquaculture are difficult to remove through air flotation is solved, and meanwhile, the occupied area is small.

Description

Technical Field

[0001] The utility model relates to freshwater aquaculture, in particular to a rapid removal system for particulate matters in freshwater aquaculture water bodies. Background Technique

[0002] Aquaculture produces a large amount of organic matters, inorganic matters, microorganisms, and their aggregates, as well as animal tissues, feces, feed residues, sediment, corrosion products, and total suspended solids (TSS) such as bacteria, algae, and protozoa. The particle size of TSS is generally between 1 and 1000 um. The existence of TSS will cause water turbidity, affect the vision and activities of aquatic organisms, reduce the dissolved oxygen in the water body, cause acid-base imbalance, affect the survival and reproduction of aquatic organisms, and in addition, it can also lead to water eutrophication and algal bloom. The particulate matters in aquaculture water bodies account for more than 45% of the total nitrogen, total phosphorus, and COD (Chemical Oxygen Demand) in the aquaculture water bodies. Efficiently and rapidly removing TSS from water bodies has always been a key technical problem in aquaculture water treatment. At present, the main technologies for removing TSS from water bodies are precipitation, hydrocyclone, screening, air flotation, etc. Precipitation is a simple and energy-saving technology for removing settleable solids, but it is difficult to remove fine particulate matters. Low-pressure hydrocyclone can remove solid particulate matters such as feces in water bodies, but the use cost is relatively high. The investment and operation costs of microfilter and arc screen filtration technologies are low, the structure is simple, but they are easy to be blocked and the degree of automation is relatively low. Centrifugal sedimentation technology is applicable to the separation of particles with a size of 10 - 300 um, and the separation efficiency is relatively high, but the equipment requirements are relatively high. Air flotation technology is mainly used for removing fine particulate matters in seawater. Due to the small surface tension of fresh water, it is difficult for the existing air flotation technology to remove fine particulate matters in water bodies.

[0003] At present, the area used for aquaculture tail water treatment has accounted for more than 10% of the total aquaculture water surface area, among which 50% is used for sedimentation to remove particulate matters, occupying a large amount of land. Developing an integrated particulate matter treatment technology with less land occupation, low cost, and high efficiency is the main content of aquaculture water treatment technology. Some studies have found that the purification effect of a one-step device - subsurface flow constructed wetland for treating domestic sewage is obvious for the removal of COD, TN, and TP in water bodies, and it has the advantages of high integration degree, obvious purification efficiency, and small land occupation area; someone has developed an integrated mobile high-efficiency air flotation separation device for the rapid purification of heavily polluted urban rivers, and the removal rates of suspended solids, total phosphorus, and algae in water bodies reach more than 70%. At present, the integrated treatment technology for aquaculture tail water is still blank. The utility model integrates multi-disciplinary theories and technologies such as environmental protection, machinery, engineering, and ecology, and develops an integrated particulate matter removal technology for freshwater aquaculture water bodies with international leading level, which can not only effectively solve the problems of difficult aquaculture water quality regulation, large tail water discharge, and high pollution, but also provide technical support for improving the quality and efficiency of aquaculture, and has broad application prospects. Summary of the Utility Model

[0004] The utility model provides a rapid removal system for particulate matters in freshwater aquaculture. The rapid removal system for particulate matters in freshwater aquaculture includes a multi-stage separator, a microfilter, an ozone flotation system, a foam separator, and a remote control terminal that are connected in sequence. The multi-stage separator, the microfilter, the ozone flotation system, and the foam separator are all connected to the remote control terminal;

[0005] The multi-stage separator is provided with a vertical flow sedimentation tank and a cyclone sedimentation tank that are connected in sequence,

[0006] The ozone flotation system includes an air compressor, an air dryer, an ozone generator, and a steam-water mixing tank that are connected in sequence. The steam-water mixing tank is connected between the microfilter and the foam separator, and the microfilter is connected to the steam-water mixing tank through an ultraviolet germicidal tube;

[0007] The remote control terminal includes a first control cabinet and a second control cabinet. The first control cabinet is used to control the multi-stage separator and the microfilter, and the second control cabinet is used to control the ozone flotation system;

[0008] The culture tail water in the culture pond passes through the multi-stage separator, the microfilter, the steam-water mixing tank, and the foam separator in sequence for step-by-step purification, and then is transported to the ecological pond for up-to-standard discharge.

[0009] Further, the vertical flow sedimentation tank is used to remove particulate matters with a specific gravity greater than that of water or a particle size > 100 μm, with a hydraulic load of 25 - 95 m 3 / d·m 2 , and a hydraulic retention time of 15 - 30 s.

[0010] Further, the cyclone sedimentation tank is used to remove particulate matters with a specific gravity close to that of water. The water inlet of the cyclone sedimentation tank is located at 1 / 3 below the water surface, with a hydraulic retention time > 30 s and a bottom drainage volume of 5%.

[0011] Further, the backwash water volume of the microfilter should be < 0.5%, and the filtration accuracy is 40 - 100 μm.

[0012] Further, the ozone flotation system is used to remove organic matters, chromaticity, peculiar smell, and fine suspended matters in water, with a removed particulate matter size < 30 μm and a hydraulic load of 280 m 3 / d·m 2 ;

[0013] The ozone generator uses pure oxygen to produce ozone, with the generated ozone concentration of 1.0 - 2.0 mg / L and the ozone water contact time in the steam-water mixing tank > 10 min.

[0014] Further, the rapid removal system for particulate matter in freshwater aquaculture also includes a multi-point water quality detector connected to the remote control terminal, and the multi-point water quality detector is used to detect the water quality values at the water inlet of the multi-stage separator and the water outlet of the foam separator.

[0015] Further, the rapid removal system for particulate matter in freshwater aquaculture is installed in a box body, and a photovoltaic panel is installed on the top of the box body.

[0016] Further, the multi-stage separator and the microfilter are both provided with particulate matter sewage outlets, and the particulate matter sewage outlets are connected to a sewage collection device through discharge pipelines.

[0017] The rapid removal technology for particulate matter in freshwater aquaculture provided by the present utility model not only solves the problem that it is difficult to remove fine particulate matter in freshwater aquaculture by air flotation, but also forms an integrated technology, greatly saving the problems such as large floor area and low treatment efficiency of aquaculture water treatment, improving aquaculture benefits and reducing aquaculture pollution. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of a rapid removal system for particulate matter in freshwater aquaculture of the present utility model;

[0020] Figure 2 It is a top view of the interior of the box body of the rapid removal system for particulate matter in freshwater aquaculture of the present utility model;

[0021] Figure 3 It is a side view of the interior of the box body of the rapid removal system for particulate matter in freshwater aquaculture of the present utility model. Detailed Embodiments

[0022] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, some well-known technical features are not described to avoid confusion with the present utility model.

[0023] To thoroughly understand the present utility model, detailed steps and structures will be presented in the following description to illustrate the technical solution of the present utility model. The preferred embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model may have other implementation manners.

[0024] Referring to Figures 1-3 As shown, the present utility model provides a rapid removal system for particulate matter in freshwater aquaculture. The rapid removal system for particulate matter in freshwater aquaculture includes a multi-stage separator 1, a microfilter 2, an ozone flotation system 3, a foam separator 4, and a remote control terminal, which are connected in sequence. The aquaculture tail water in the aquaculture pond 6 is sequentially purified through the multi-stage separator 1, the microfilter 2, the ozone flotation system 3, and the foam separator 4, and then transported to the ecological pond 7 for up-to-standard discharge. Each part will be described in detail below.

[0025] Multi-stage separator 1

[0026] The multi-stage separator 1 is provided with a vertical flow sedimentation tank 11 and a hydrocyclone sedimentation tank 12, which are connected in sequence.

[0027] The vertical flow sedimentation tank 11 mainly uses the action of gravity or centrifugal force to naturally stratify the particulate matter and water in the aquaculture water during the vertical flow process, so as to remove particulate matter with a specific gravity greater than that of the water body or a particle size > 100 μm. The hydraulic load is 25 - 95 m3 / d·m2, and the hydraulic retention time is 15 - 30 s.

[0028] The hydrocyclone sedimentation tank 12 mainly uses the rotating water flow to collect solid particulate matter to the central bottom of the filter, and is used to separate particulate matter with a specific gravity close to that of water. Its water inlet is located at 1 / 3 below the water surface, the hydraulic retention time > 30 s, and the bottom drainage volume is 5%.

[0029] Microfilter 2

[0030] The microfilter 2 is mainly used to filter particulate matter with a large volume and a density equal to or less than that of water, and includes drum-type, disc-type, track-type microfilters, arc screens, etc. The backwash water volume of the microfilter 2 should be < 0.5%, and the filtration accuracy is 40 - 100 μm.

[0031] Ozone flotation system 3

[0032] The ozone flotation system 3 includes an air compressor 31, an air dryer 32, an ozone generator 33, and a steam-water mixing tank 34, which are connected in sequence. The steam-water mixing tank 34 is connected between the microfilter 2 and the foam separator 4. The ozone generator 33 prepares ozone and introduces it into the steam-water mixing tank 34. It mainly uses the principles of ozone oxidation and flotation separation to remove organic matter, chromaticity, odor, and fine suspended matter in water. The particle size of the removed particulate matter is < 30 μm, and the hydraulic load is 280 m 3 / d·m 2。The ozone flotation system 3 uses pure oxygen to produce ozone with an ozone concentration of 1.0 - 2.0 mg / L and an ozone contact time > 10 min.

[0033] Foam separator 4

[0034] The foam separator 4 is mainly based on the principle of foam separation. By introducing gas (usually air or pure oxygen) into the water, surface-active substances such as dissolved organic matter, colloidal substances, and tiny suspended solids in the water body adhere to the surface of the bubbles and rise to the water surface to form a foam layer. Finally, the foam layer is removed by a foam scraping device, thus achieving the purification of the water body.

[0035] Inside the foam separator 4, there is a precise gas distribution device to ensure that the gas can be evenly distributed throughout the treatment area, improving the contact efficiency between the bubbles and the pollutants in the water body. At the same time, this device is also equipped with a control system for adjusting the gas flow rate, which can be flexibly adjusted according to the actual treatment requirements to achieve the best treatment effect. It should be noted that the foam separator 4 can not only effectively remove pollutants in the water body, but also has the advantages of low energy consumption, simple operation, and low maintenance cost. In addition, the foam layer generated by this device is rich in nutrients and can be recycled as fertilizer or feed raw materials, realizing the maximization of resource utilization.

[0036] In specific implementation, the aquaculture tail water first undergoes two - stage sedimentation purification through the vertical flow sedimentation tank 11 and the swirl sedimentation tank 12, then is filtered through the micro - filter 2, and then enters the steam - water mixing tank 34 to be fully mixed with ozone. The strong oxidizing property of ozone helps to break the organic matter structure in the water body, making it more easily captured by the foam separator 4. Subsequently, the mixed water body enters the foam separator 4, and under the action of the bubbles, the tiny suspended solids and dissolved organic matter in the water are effectively removed, and the purified water body meets the standard for direct discharge into the ecological pond.

[0037] Remote control terminal

[0038] The remote control terminal is connected to each processing unit (i.e., the multi - stage separator 1, the micro - filter 2, the ozone flotation system 3, the foam separator 4). Among them, the remote control terminal includes a first control cabinet 91 and a second control cabinet 92. The first control cabinet 91 is used to control the multi - stage separator 1 and the micro - filter 2, and the second control cabinet 92 is used to control the ozone flotation system 3. The start - stop, operation parameter adjustment, and fault diagnosis of the corresponding processing units are controlled through the first control cabinet 91 and the second control cabinet 92 respectively. This distributed control strategy not only improves the flexibility and response speed of the system, but also ensures that each processing unit can operate independently. Even if a certain link fails, it will not affect the normal operation of the entire system.

[0039] The remote control terminal also has the functions of data collection and analysis. It can monitor the operating status of each processing unit and water quality parameters in real time through the built-in sensor network, such as water temperature, dissolved oxygen, pH value, suspended solid concentration, etc. These data will be automatically uploaded to the cloud server for in-depth mining using big data analysis technology, providing a scientific basis for optimizing system operating parameters and predicting fault trends. At the same time, users can remotely access the control system through the mobile phone APP or web page to view the water quality data, treatment effect and system operating status in real time, realizing remote monitoring and management.

[0040] In addition, to further improve the intelligence level of the system, the present utility model also introduces artificial intelligence technology. Through machine learning algorithms, a large amount of water quality data is analyzed and modeled to achieve accurate prediction and intelligent control of water quality changes. When the water quality parameters deviate from the preset range, the system can automatically adjust the operating parameters of the processing unit, such as increasing the ozone dosage, adjusting the backwashing frequency, etc., to quickly restore the water quality to the up-to-standard state. This intelligent control mechanism not only improves the efficiency and stability of water quality treatment, but also significantly reduces the need and cost of manual intervention.

[0041] In practical applications, the freshwater aquaculture particulate rapid removal system provided by the present utility model has significant advantages. First of all, the system can efficiently remove pollutants such as particulate matter, organic matter and odor in the aquaculture water body, significantly improving the water quality and providing a more suitable ecological environment for aquaculture. Secondly, through the coordinated action of multiple treatment units and the intelligent control mechanism, the system can achieve continuous and stable up-to-standard discharge of water quality, effectively reducing the pollution of aquaculture tail water to the environment. Finally, the system has the advantages of simple structure, convenient operation and low maintenance cost, and is easy to be popularized and applied in various freshwater aquaculture scenarios.

[0042] Multi-point water quality detector

[0043] The multi-point water quality detector is used to detect the water quality data of the water treatment system at multiple points, including but not limited to the water quality values at the inlet of the multi-stage separator 1 and the outlet of the foam separator 4, and send these water quality values to the remote control terminal. The remote control terminal adjusts the operating parameters of each processing unit in real time according to the water quality data to achieve the optimal purification effect. This multi-point water quality detector integrates a variety of sensors, such as turbidimeters, dissolved oxygen sensors, pH meters, and total phosphorus and total nitrogen analyzers, etc., and can comprehensively monitor the key water quality indicators in the water body.

[0044] In an optional embodiment, the vertical flow sedimentation tank 11, the hydrocyclone sedimentation tank 12 and the microfilter 2 of the multi-stage separator 1 are all provided with particulate matter discharge ports, and the particulate matter discharge ports are connected to the sewage collection device 5 through discharge pipelines to centrally collect the particulate matter of the multi-stage separator 1 and the microfilter 2.

[0045] In an optional embodiment, a rapid removal system for particulate matter in freshwater aquaculture is installed in a box, and a photovoltaic panel is installed on the top of the box. The introduction of the photovoltaic panel not only provides green and sustainable energy support for the entire rapid removal system for particulate matter in freshwater aquaculture, but also significantly reduces the operating cost and enhances the self-sufficiency ability of the system. The photovoltaic panel is made of high-efficiency single-crystal or polycrystalline silicon materials, has a high conversion efficiency and good weather resistance, and can operate stably under various climate conditions to ensure the continuity and stability of the system's power supply.

[0046] The photovoltaic panel is connected to the power demand of the system through an intelligent controller, and automatically adjusts the output power according to the real-time energy consumption of each part of the system to achieve the maximum utilization of energy. During sunny periods, the excess power generated by the photovoltaic panel can be stored in a supporting energy storage battery for use at night or on rainy or cloudy days. This energy storage design further enhances the independent operation ability of the system and reduces the dependence on the external power grid.

[0047] During the overall operation of the system, the photovoltaic panel not only provides power support for key equipment such as multi-stage separators, microfiltration machines, ozone flotation systems, and foam separators, but also supplies power to auxiliary equipment such as multi-point water quality detectors and remote control terminals. This integrated energy supply scheme not only simplifies the system structure, but also improves the energy utilization efficiency and reduces the overall energy consumption. By introducing the photovoltaic panel, the rapid removal system for particulate matter in freshwater aquaculture of the present utility model realizes the green and sustainable utilization of energy, further improves the environmental protection performance and economic benefits of the system. At the same time, the intelligent control and management of the photovoltaic panel also provide a strong guarantee for the stable operation of the system.

[0048] The advantages of the present utility model are as follows:

[0049] 1. Remarkable environmental protection benefits: Through multi-stage purification treatment and intelligent regulation mechanisms, the present utility model can significantly reduce the pollutant emissions in aquaculture tail water, protect the ecological environment from pollution, and realize the green and sustainable development of the aquaculture industry. In particular, the combination of the strong oxidation effect of ozone and the foam separation technology enables the efficient removal of organic matter and suspended solids in the water body, ensuring that the discharged water quality meets the eco-friendly standards.

[0050] 2. High level of intelligence: By introducing artificial intelligence technology and big data analysis platforms, the present system has strong self-learning and self-adaptive capabilities. Through real-time monitoring and data analysis, the system can accurately predict the trend of water quality changes and automatically adjust the operating parameters to cope with water quality fluctuations, greatly improving the intelligence and automation level of water quality treatment.

[0051] 3. Energy self - sufficiency: The integrated application of photovoltaic panels provides stable and reliable green energy support for the system. This innovative design not only reduces the operating cost of the system, but also decreases the dependence on the external power grid, enhancing the system's independent operation ability and emergency response ability. Under sufficient lighting conditions, the electricity generated by the photovoltaic panels can not only meet the system's own needs, but also provide power support for surrounding facilities or equipment, further improving the energy utilization efficiency.

[0052] 4. High promotion value: Due to the significant environmental benefits, high level of intelligence, energy self - sufficiency, and low maintenance costs of this utility model, it has broad promotion value and application prospects. Whether in freshwater aquaculture, marine aquaculture, or other fields that require water quality treatment, this utility model can play an important role in improving the water quality environment and promoting industrial development. In addition, the implementation of this utility model can also drive the development of related industrial chains, promoting technological innovation and industrial upgrading.

[0053] In summary, the freshwater aquaculture particulate rapid removal system provided by this utility model is an innovative product that integrates environmental protection, intelligence, and energy conservation. It can not only efficiently remove pollutants in the aquaculture water body and protect the ecological environment, but also reduce the operating cost and improve economic benefits through intelligent control and green energy support. At the same time, its advantages such as simple structure, convenient operation, and low maintenance cost also make it easy to be promoted and applied in various aquaculture scenarios. Therefore, this utility model has extremely high practical value and social significance.

[0054] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the above - mentioned specific implementation manners. The equipment and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art, without departing from the scope of the technical solution of this utility model, can make many possible changes and modifications to the technical solution of this utility model by using the methods and technical content disclosed above, or modify it into equivalent embodiments with equivalent changes, which does not affect the essence of this utility model. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model still fall within the scope of the protection of the technical solution of this utility model.

Claims

1. A rapid removal system for particulate matter in freshwater aquaculture, characterized in that, The rapid removal system for particulate matter in freshwater aquaculture includes a multi-stage separator (1), a microfilter (2), an ozone flotation system (3), a foam separator (4), and a remote control terminal, which are connected in sequence. The multi-stage separator (1), the microfilter (2), the ozone flotation system (3), and the foam separator (4) are all connected to the remote control terminal; The multi-stage separator (1) is provided with a vertical flow sedimentation tank (11) and a hydrocyclone sedimentation tank (12) connected in sequence. The ozone flotation system (3) includes an air compressor (31), an air dryer (32), an ozone generator (33), and a steam-water mixing tank (34) connected in sequence. The steam-water mixing tank (34) is connected between the microfilter (2) and the foam separator (4), and the microfilter (2) is connected to the steam-water mixing tank (34) through an ultraviolet germicidal tube (8); The remote control terminal includes a first control cabinet (91) and a second control cabinet (92). The first control cabinet (91) is used to control the multi-stage separator (1) and the microfilter (2), and the second control cabinet (92) is used to control the ozone flotation system (3); The aquaculture tail water in the aquaculture pond (6) is sequentially purified through the multi-stage separator (1), the microfilter (2), the steam-water mixing tank (34), and the foam separator (4), and then transported to the ecological pond (7) for up-to-standard discharge.

2. The rapid removal system for particulate matter in freshwater aquaculture according to claim 1, wherein, The vertical flow sedimentation tank (11) is used to remove particulate matters with a specific gravity greater than that of water or a particle size > 100 μm, and the hydraulic load is 25 - 95 m 3 / d·m 2 .

3. The rapid removal system for particulate matter in freshwater aquaculture according to claim 2, characterized in that, The hydrocyclone sedimentation tank (12) is used to remove particulate matter with a specific gravity close to that of water. The water inlet of the hydrocyclone sedimentation tank (12) is located at 1 / 3 below the water surface, and the bottom drainage volume is 5%.

4. A rapid removal system for particulate matter in freshwater aquaculture, as described in claim 1, characterized in that, The backwashing water volume of the microfilter (2) should be <0.5%, and the filtration accuracy is 40 - 100 um.

5. The rapid removal system for particulate matter in freshwater aquaculture according to claim 1, characterized in that, The ozone flotation system (3) is used to remove organic matters, colority, peculiar smell and fine suspended solids in water, with the particle size of the removed particles < 30um and the hydraulic load of 280m 3 / d·m 2 ; The ozone generator (33) uses pure oxygen to produce ozone, and the generated ozone concentration is 1.0 - 2.0 mg / L.

6. The rapid removal system for particulate matter in freshwater aquaculture according to claim 1, characterized in that, The rapid removal system for particulate matter in freshwater aquaculture further includes a multi-point water quality detector connected to the remote control terminal. The multi-point water quality detector is used to detect the water quality values at the water inlet of the multi-stage separator (1) and the water outlet of the foam separator (4).

7. The rapid removal system for particulate matter in freshwater aquaculture according to claim 1, characterized in that, The rapid removal system for particulate matter in freshwater aquaculture is installed in a box, and a photovoltaic panel is installed on the top of the box.

8. The rapid removal system for particulate matter in freshwater aquaculture according to claim 1, characterized in that, Both the multi-stage separator (1) and the microfilter (2) are provided with particulate matter sewage outlets, and the particulate matter sewage outlets are connected to a sewage collection device (5) through a discharge pipeline.

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