A microbial fiber matrix air purifier
By integrating a bag-type fiber biofiltration matrix with a synchronous nitrification and denitrification mechanism, the bio-fiber matrix purifier solves the problems of equipment redundancy and high energy consumption in RAS systems, achieving efficient decontamination and resource recycling, and improving water purification efficiency and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LAIZHOU JINSHENGSHUI ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional recirculating aquaculture systems (RAS) suffer from redundant equipment, resulting in high investment costs, high energy consumption, complex processes, low resource utilization, and insufficient removal rates of ammonia nitrogen and phosphorus, making it difficult to achieve resource utilization.
The microbial fiber matrix purifier integrates a bag-type fiber biological filtration matrix with a simultaneous nitrification and denitrification mechanism. It achieves physical filtration, biological reaction and microbial membrane treatment through modified plastic fiber bags, and combines slow-release carbon source and microbial filler to realize the resource utilization of waste and efficient decontamination.
It reduces equipment investment by more than 40%, energy consumption by 50%, ammonia nitrogen removal rate >80%, phosphorus removal rate 90%, turbidity purification rate 98.6%, and circulating water utilization rate to 97%, achieving resource utilization and water purification.
Smart Images
Figure CN224450440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture wastewater treatment technology, and in particular to a microbial fiber matrix purifier. Background Technology
[0002] As aquaculture transforms towards intensive and sustainable practices, recirculating aquaculture systems (RAS) have become a core direction for industry upgrading due to their water-saving and environmentally friendly characteristics. Traditional RAS systems rely on multi-stage series equipment: the front end uses vertical flow sedimentation tanks or microfilters for physical filtration; the middle stage requires energy-intensive protein skimmers to remove dissolved organic matter; and the back end uses biological fluidized beds, fixed beds, and other equipment to achieve nitrification and denitrification. While this model can maintain water quality, it has significant drawbacks:
[0003] Firstly, equipment redundancy leads to high investment costs (e.g., biological fluidized beds require additional aeration, and energy consumption accounts for more than 30% of the total power consumption of the system).
[0004] Secondly, the process is complex, with physical filtration and biological treatment operating separately, and organic waste such as uneaten feed and feces need to be transferred multiple times, increasing operation and maintenance costs.
[0005] Third, the resource utilization rate is low. Residual feed and feces are only discharged as waste and are not utilized as resources. Moreover, the degradation rate of ammonia nitrogen is generally less than 70%, and the removal of phosphorus is less than 60%. Frequent water changes or the addition of chemical agents are required, which exacerbates the environmental burden.
[0006] In recent years, although there have been attempts to optimize the technology (such as adding microalgae or optimizing bacterial communities), the framework of equipment stacking has not been broken. For example, some systems use a combination of "mobile biological tank + sterilization unit", which improves denitrification efficiency, but the addition of carbon source is uncontrollable and easily leads to the accumulation of volatile fatty acids, inhibiting bacterial activity; other solutions regulate water quality by adding online monitoring modules, but due to the lack of integration with in-situ fermentation of organic waste, the overall complexity of the system cannot be reduced.
[0007] The aforementioned problems have hindered the large-scale application of the RAS system in the "Blue Granary" strategy, and there is an urgent need for an innovative solution that can simultaneously simplify processes, reduce energy consumption, and realize the conversion of waste into resources. Utility Model Content
[0008] The purpose of this invention is to provide a microbial fiber matrix purifier to solve the problems existing in the prior art.
[0009] To achieve the above objectives, this utility model provides the following solution:
[0010] This utility model provides a microbial fiber matrix purifier, comprising:
[0011] The nitrification tank is a sealed structure with an open top.
[0012] A bag-type fiber biofiltration matrix assembly is disposed above the nitrification tank;
[0013] An external water inlet assembly, which is connected to the bag-type fiber biofiltration matrix assembly;
[0014] An internal circulation component is connected to the nitrification tank and the bag-type fiber biofiltration matrix component.
[0015] Preferably, the bag-type fiber biofiltration matrix assembly includes a sewage inlet pipe, the inlet end of which is connected to the external inlet assembly, and the outlet end of which is connected to a distribution pipe. The distribution pipe is connected to a central inlet pipe, the sidewall of which is provided with a slow-release carbon source and microbial filler, and a filter bag is coaxially provided on the outside of the central inlet pipe. The bottom of the filter bag is connected to a sewage discharge pipe.
[0016] Preferably, the central inlet pipes are arranged in a matrix above the nitrification tank.
[0017] Preferably, the central water inlet pipe and the distribution pipe are connected via a union joint.
[0018] Preferably, the bag is a modified plastic fiber bag.
[0019] Preferably, the bottom of the cloth bag is connected to the drain pipe via a drain port.
[0020] Preferably, the bag has an external vertical cylinder, and the side wall of the vertical cylinder has water-permeable holes.
[0021] Preferably, the external water inlet assembly includes a low-level tank sewage pump, which is connected to the sewage inlet pipe via a sewage delivery pipe.
[0022] Preferably, the internal circulation component includes a self-circulating water purification pump, which is located at the bottom of the nitrification tank and connected to the distribution pipe via a water purification pipe.
[0023] Preferably, the bottom of the nitrification tank is stacked with a first permeable pipe and a second permeable pipe, the first permeable pipe and the second permeable pipe are arranged intersectingly, the first permeable pipe is filled with pebbles, and the second permeable pipe is filled with a carbon source.
[0024] The present invention achieves the following beneficial technical effects compared to the prior art:
[0025] This utility model provides a microbial fiber matrix purifier that integrates a bag-type fiber biofiltration matrix with a simultaneous nitrification and denitrification mechanism, offering the triple advantages of simplified structure, high-efficiency decontamination, and resource recycling. Specifically:
[0026] Replacing multi-stage redundant devices with a single device: Modified plastic fiber bags are used to simultaneously complete physical filtration, biological reaction and microbial membrane treatment, completely replacing vertical flow sedimentation tanks, microfilters, protein separators and biological fluidized beds, reducing equipment investment by more than 40%;
[0027] Energy and resource conservation: The bottom backflushing design of the central water inlet pipe allows the waste to be fluidized and distributed in the bag. Combined with targeted control of bacterial carbon coupling, it decomposes large molecular organic matter into bioflocs that can be ingested by fish. The resource utilization rate of residual feed and feces exceeds 90%. At the same time, the elimination of high-energy-consuming equipment reduces the system's energy consumption by 50%.
[0028] Breakthrough in water purification efficiency: Relying on the synergistic effect of the microbial film enriched in the filter bag and the slow-release carbon source, the ammonia nitrogen removal rate is >80%, the phosphorus removal rate reaches 90%, the turbidity purification rate is 98.6%, the circulating water utilization rate is increased to 97%, and the CO removal rate is >98%, which is significantly better than the traditional RAS system.
[0029] It has strong application compatibility: it can operate independently in land-based factory farming to achieve a "zero-emission" carbon sink fishery model, or it can be used as a front-end pretreatment unit of existing RAS or a deep treatment module of sewage treatment plants, which can significantly reduce the load on subsequent ecological ponds and promote the reuse of aquaculture wastewater that meets standards. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 A schematic diagram of the microbial fiber matrix purifier structure provided by this utility model;
[0032] Figure 2 This is a front sectional view of the microbial fiber matrix purifier provided by this utility model;
[0033] Figure 3 A side sectional view of the microbial fiber matrix purifier provided by this utility model;
[0034] Figure 4 A schematic diagram of the bag-type fiber biofiltration matrix component in the microbial fiber matrix purifier provided by this utility model. Detailed Implementation
[0035] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0038] The purpose of this invention is to provide a microbial fiber matrix purifier to solve the problems existing in the prior art.
[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0040] Example 1:
[0041] This embodiment provides a microbial fiber matrix purifier, such as Figure 1-4 As shown, it includes:
[0042] Nitrification tank 1 is a sealed structure with an open top. It serves as the main site for wastewater treatment. It is connected to external wastewater for treatment before the clean water is discharged.
[0043] The bag-type fiber biological filter matrix component 2 is set above the nitrification tank 1. It can replace traditional coarse filtration equipment such as vertical flow sedimentation tank and micro filter, as well as high-energy-consuming equipment such as protein separator and biological fluidized bed, to complete the process flow of filtration, purification and microbial membrane treatment, reduce energy consumption, simplify process flow and achieve zero discharge of circulating water.
[0044] External water inlet component 3 is connected to bag-type fiber biological filter matrix component 2 and is used for water intake;
[0045] Internal circulation component 4 is connected to nitrification tank 1 and bag-type fiber biological filter matrix component 2 for circulating water treatment.
[0046] In one embodiment, the bag-type fiber biological filter matrix assembly 2 includes a sewage inlet pipe 21, the inlet end of which is connected to an external inlet assembly 3, and the outlet end of which is connected to a distribution pipe 22. The distribution pipe 22 is connected to a central inlet pipe 23. The side wall of the central inlet pipe 23 is provided with a slow-release carbon source 24 and microbial filler 25. A filter bag 26 is coaxially provided on the outside of the central inlet pipe 23, and the bottom of the filter bag 26 is connected to a sewage discharge pipe 27.
[0047] Wastewater enters from the top, flows through the central inlet pipe 23, and then exits through backflushing at the bottom, causing the pollutants in the water to flow into a fluidized state and disperse to the maximum extent on the four walls of the filter bag, which is conducive to the decomposition reaction. The slow-release carbon source 24 quantitatively replenishes the carbon source (N / D-15), and the microbial filler 25 is equipped with EM strains, which is conducive to fermentation and the formation of a stable biofilm, improving the efficiency of ammonia nitrogen degradation and phosphorus removal. The nitrogen-phosphorus-algae cycle and water purification are applied in synergy. BFT promotes the conversion of ammonia nitrogen into microbial protein by heterotrophic bacteria through the regulation of the carbon-nitrogen ratio (C / N). The configuration of microalgae (diatoms, chlorella, schistocysts, etc.) and light control promote the growth of beneficial algae, forming flocs and algae that can be ingested by fish, making the aquaculture water body a micro-ecologically healthy water body.
[0048] Furthermore, the central inlet pipes 23 are arranged in a matrix above the nitrification tank 1, which can effectively improve the water purification efficiency.
[0049] Furthermore, the central water inlet pipe 23 and the distribution pipe 22 are connected by a flexible joint 28 for easy connection and deployment.
[0050] Furthermore, the filter bag 26 uses modified plastic fiber filter bags to replace other physical filtration equipment, allowing waste to ferment, undergo biological reactions, and be filtered and purified within the bag. Organic matter inside the bag is enriched and fermented, and through enzymatic catalysis, bacterial-carbon coupling, and targeted control of organic carbon sources, large organic molecules (such as proteins and fats) are decomposed into easily degradable small molecules and form bioflocs (which can be ingested by fish), turning waste such as uneaten food and feces into valuable resources and achieving comprehensive resource utilization. The modified plastic fiber filter bag serves as both a filter and a microbial carrier, enabling simultaneous nitrification and denitrification (SND) reactions, effectively removing nitrogen and phosphorus, and maintaining safe water purification.
[0051] Furthermore, the bottom of the filter bag 26 is connected to the drain pipe 27 via the drain port 29, thereby enabling the discharge of filtered impurities.
[0052] Furthermore, the bag 26 is provided with a vertical cylinder 210 on its exterior, and the side wall of the vertical cylinder 210 is provided with water permeable holes 211, so that the filtered clean water flows out and enters the nitrification tank 1.
[0053] In one implementation, the external water inlet component 3 includes a low-level tank sewage pump 31, which is connected to the sewage inlet pipe 21 via a sewage delivery pipe 32, thereby realizing the delivery of external sewage.
[0054] In one implementation, the internal circulation component 4 includes a self-circulating water purification pump 41, which is located at the bottom of the nitrification tank 1 and connected to the distribution pipe 22 through the water purification pipe 41, thereby recirculating the treated water to the bag-type fiber biological filter matrix component 2 for further treatment.
[0055] In one embodiment, a first permeable pipe 5 and a second permeable pipe 6 are stacked at the bottom of the nitrification tank 1. The first permeable pipe 5 and the second permeable pipe 6 are arranged in a cross manner. The first permeable pipe 5 contains pebbles, and the second permeable pipe 6 contains a carbon source.
[0056] The present invention provides a microbial fiber matrix purifier, which can also be equipped with an online water quality monitoring system and AI fusion technology to monitor and regulate water quality (temperature, turbidity, salinity, CO, ORP, ammonia nitrogen, etc.) and microbial and algal status, optimize fermentation conditions and microbial metabolic pathways; and monitor the aquaculture status (density, fish characteristics, etc.) visually.
[0057] This utility model provides a microbial fiber matrix purifier that can be used in land-based recirculating aquaculture systems, saving investment in water treatment equipment, reducing operating costs, saving energy and reducing consumption, achieving carbon neutrality and zero emissions, effectively converting residual feed and feces into resources for comprehensive utilization, and realizing a carbon sink aquaculture model.
[0058] This utility model provides a microbial fiber matrix purifier that optimizes water quality treatment, achieving ammonia nitrogen removal rate >80%, phosphorus removal rate 90%, carbon dioxide removal rate >98%, turbidity 98.6%, and circulating water utilization rate over 97%.
[0059] The microbial fiber matrix purifier provided by this utility model can also be used in other sewage treatment systems, saving investment, reducing land occupation and lowering operating costs, and enabling water reuse or discharge that meets standards.
[0060] The present invention provides a microbial fiber matrix purifier that can be combined with the existing RAS system as a front-end treatment to decompose organic matter such as uneaten feed and feces, reducing the burden of subsequent treatment; when combined with the back-end treatment system of the RAS system, such as the mobile biological pool, sterilization, oxygen supply and constant temperature, it ensures that ammonia nitrogen is converted into harmless nitrate, avoids fish poisoning and ensures safe and stable water quality.
[0061] The present invention provides a microbial fiber matrix purifier that can be used in conjunction with two dams and three ponds in the treatment of aquaculture wastewater. It can serve as a pre-treatment system, reducing the burden of subsequent treatment. Only an ecological pond is needed to meet discharge standards or reuse the water.
[0062] The microbial fiber matrix purifier provided by this utility model can also be used as a follow-up deep treatment system for other organic wastewater treatment, converting organic pollutants and organic proteins into functional biological proteins, realizing comprehensive resource utilization and effluent discharge that meets standards.
[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0064] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0065] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A mycofibril matrix purifier characterized by: include: The nitrification tank is a sealed structure with an open top. A bag-type fiber biofiltration matrix assembly is disposed above the nitrification tank; An external water inlet assembly, which is connected to the bag-type fiber biofiltration matrix assembly; An internal circulation component is connected to the nitrification tank and the bag-type fiber biofiltration matrix component.
2. The mycofibril matrix purifier of claim 1, wherein: The bag-type fiber biofiltration matrix assembly includes a sewage inlet pipe, the inlet end of which is connected to the external inlet assembly, and the outlet end of which is connected to the distribution pipe. The distribution pipe is connected to the central inlet pipe, and the side wall of the central inlet pipe is provided with a slow-release carbon source and microbial filler. A filter bag is coaxially provided on the outside of the central inlet pipe, and the bottom of the filter bag is connected to the sewage discharge pipe.
3. The mycofibril matrix purifier of claim 2, wherein: The central inlet pipes are arranged in a matrix above the nitrification tank.
4. The mycofibril matrix purifier of claim 2, wherein: The central water inlet pipe and the distribution pipe are connected by a union joint.
5. The mycofibril matrix purifier of claim 2, wherein: The bag is made of modified plastic fiber.
6. The mycofibril matrix purifier of claim 2, wherein: The bottom of the cloth bag is connected to the drain pipe via a drain port.
7. The mycofibril matrix purifier of claim 2, wherein: The bag has an external vertical cylinder, and the side wall of the vertical cylinder has water-permeable holes.
8. The mycofibril matrix purifier of claim 2, wherein: The external water inlet assembly includes a low-level tank sewage pump, which is connected to the sewage inlet pipe via a sewage delivery pipe.
9. The mycofibril matrix purifier of claim 2, wherein: The internal circulation component includes a self-circulating water purification pump, which is located at the bottom of the nitrification tank and connected to the distribution pipe via a water purification pipe.
10. The MycoFiber Matrix Purifier of any of claims 1-9, wherein: The bottom of the nitrification tank is stacked with a first permeable pipe and a second permeable pipe, which are arranged to cross each other. The first permeable pipe contains pebbles, and the second permeable pipe contains a carbon source.