Micro-aerobic ecological base reaction bed applied to agricultural non-point source

Abstract

The utility model discloses a kind of micro-aerobic ecological base reaction beds applied to agricultural non-point source, including reaction bed mounting bracket, ecological base assembly and aeration device, multiple ecological base assemblies are detachably mounted on reaction bed mounting bracket;The aeration device is connected with ecological base assembly, and provides local micro-aerobic environment for ecological base assembly.Through ecological base assembly detachably mounted on reaction bed mounting bracket, when the situation that filter material is blocked is avoided inconvenient cleaning or replacement, modular management and replacement are realized, while also reducing maintenance cost, the aeration device is connected with ecological base assembly, and provides local micro-aerobic environment for ecological base assembly, can ensure the best growth conditions of microorganism, improve the efficiency of agricultural non-point source sewage treatment, with wide application prospect.

Description

Technical Field

[0001] This utility model relates to an eco-based reaction bed, specifically a micro-oxygen eco-based reaction bed applied to agricultural non-point source pollution, belonging to the field of wastewater treatment technology. Background Technology

[0002] With the acceleration of agricultural modernization, agricultural non-point source pollution has become a key challenge for water environment protection in my country. Among them, dispersed pollution sources such as aquaculture wastewater, farmland runoff and rural domestic sewage are characterized by large fluctuations in water volume and complex pollutant composition (high nitrogen and phosphorus, high organic matter, and pathogens). Traditional centralized sewage treatment technologies are difficult to adapt to their low-concentration, intermittent and geographically dispersed treatment needs.

[0003] Eco-based reactive bed wastewater treatment is a novel wastewater treatment technology that utilizes biofilm technology. Microorganisms attach and grow on the surface of an oxygen-permeable hollow fiber membrane. As wastewater flows around the hollow fiber membrane, pollutants in the water enter the biofilm under the influence of concentration gradient and microbial adsorption. Through biological metabolism and proliferation, the pollutants are utilized by the microorganisms, achieving water purification and recycling.

[0004] The application of biofilm water treatment technology in agricultural non-point source wastewater mainly manifests in the form of biological filters. However, this technology also has some drawbacks, including: 1. Filter media clogging is difficult to replace: Suspended solids and pollutants in wastewater will accumulate on the surface of the filter media, causing the filter to clog. Regular cleaning and maintenance are required. However, the biological filter is not convenient for specific operations during cleaning and maintenance.

[0005] 2. Large footprint: Especially traditional biological filters require a large space to accommodate filter media and ensure water flow, which is particularly problematic in urban areas with limited land resources.

[0006] 3. Operating parameters need to be precisely controlled: During the operation of the biological filter, parameters such as pH, temperature, and dissolved oxygen need to be controlled to ensure the optimal growth conditions for microorganisms, which increases the complexity of operation and management.

[0007] 4. Insufficient oxygen supply: In some biofilter designs, especially tower biofilters, there may be insufficient oxygen supply, leading to anaerobic conditions and affecting the treatment effect.

[0008] Based on the above issues, further optimization and improvement of biofilm water treatment in the field of agricultural non-point source wastewater is needed. Utility Model Content

[0009] This invention provides a micro-oxygen ecological base reaction bed for agricultural non-point source wastewater, which is designed to efficiently treat agricultural non-point source wastewater while being easy to maintain and manage.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A micro-oxygen ecological-based reaction bed for agricultural non-point source applications includes a reaction bed mounting frame, ecological-based components, and an aeration device. Multiple sets of the ecological-based components are detachably mounted on the reaction bed mounting frame. The aeration device is connected to the ecological-based components to provide a local micro-oxygen environment for the ecological-based components.

[0011] Preferably, there are gaps between the multiple sets of ecological base components, each including an ecological base body and a mounting part, wherein the ecological base body and the mounting part are movably connected, and the mounting part is detachably connected to the reaction bed mounting frame.

[0012] Preferably, the ecological basic body is made of porous ceramic or polymer material, and the mounting part is fixedly connected to the ecological basic body by bolts or buckles, and is movably connected to the reaction bed mounting frame by slide rails or slots.

[0013] More preferably, the polymer material is a polymer woven fabric, and the ecological basic body is woven from the polymer woven fabric. It serves as a carrier for the attachment and growth of microorganisms, promoting biofilm formation and thus improving wastewater treatment efficiency.

[0014] More preferably, the aeration device includes an aeration pipeline and an air volume controller. The aeration pipeline consists of multiple layers of independent micro / nano air tubes, with the pore density of the multiple layers of micro / nano air tubes decreasing layer by layer from top to bottom. This allows for individual control of the oxygen content in the surrounding water of the ecological substrate to accommodate different types of bacteria.

[0015] More preferably, the micro-nano air tubes are provided with three layers, namely an upper layer of micro-nano air tubes, a middle layer of micro-nano air tubes, and a lower layer of micro-nano air tubes, and the aeration volume of each layer of micro-nano air tubes is independently controlled by an air volume controller.

[0016] More preferably, each of the micro-nano air tubes is mounted on the reaction bed mounting frame and is independently connected to a micro-nano bubble generator. The micro-nano bubble generator is signal-connected to the gas flow controller. The micro-nano bubble generator receives the aeration signal from the gas flow controller and adjusts the aeration volume of the generator to adapt to different wastewater treatment scenarios.

[0017] In a further preferred embodiment, the micro-nano air tubes are combined with the ecological base components and placed between two adjacent sets of ecological base components, which can ensure that the bubbles are evenly distributed in the reaction bed and improve oxygen utilization efficiency.

[0018] Furthermore, the reaction bed mounting frame has a multi-layer structure, with each layer having multiple mounting positions for installing ecological base components, allowing for the integration of multiple sets of ecological base components to meet the needs of different wastewater treatment scenarios.

[0019] The advantages of this utility model are: (1) The micro-oxygen ecological base reaction bed of this utility model is detachably installed on the reaction bed mounting frame by ecological base components. This solves the problem that in the prior art, suspended solids and pollutants in wastewater will accumulate on the surface of the filter media, causing the filter to become clogged and requiring regular cleaning and maintenance. However, the form of biological filter is not convenient for specific operations during cleaning and maintenance. This realizes modular management and replacement, which not only facilitates operation but also reduces the floor space and maintenance costs. (2) The aeration device of this utility model is connected to the ecological base component to provide a local micro-oxygen environment for the ecological base component, which can ensure the best growth conditions for microorganisms, improve the efficiency of agricultural non-point source wastewater treatment, and avoid the problem of insufficient oxygen supply, which leads to the occurrence of anaerobic state and affects the treatment effect. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the ecological base component according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the aeration direction structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the multi-layer reaction bed mounting frame according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the reaction bed mounting frame and aeration device according to an embodiment of the present invention.

[0021] 1-Reaction bed mounting frame, 2-Ecological base component, 3-Aeration device; 2-1-Ecological basic body, 2-2-Mounting part; 3-1-Upper layer micro-nano trachea, 3-2-Middle layer micro-nano trachea, 3-3-Lower layer micro-nano trachea. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] This embodiment applies a micro-oxygen ecological-based reaction bed to agricultural non-point source pollution, combined with... Figures 1 to 5 As shown, the device includes a reaction bed mounting frame 1, an ecological substrate component 2, and an aeration device 3. Multiple sets of ecological substrate components 2 are detachably mounted on the reaction bed mounting frame 1. The aeration device 3 is connected to the ecological substrate components 2 to provide a local micro-oxygen environment for the ecological substrate components 2.

[0024] Example 1

[0025] In this embodiment, the reaction bed mounting frame 1 is designed as a multi-layer structure to make effective use of space. Each layer is provided with multiple mounting positions for installing the ecological base components 2, thereby facilitating modular management and replacement.

[0026] To facilitate the maintenance and replacement of the micro-oxygen ecological-based reaction bed in the later stages of agricultural non-point source wastewater treatment, in this embodiment, each ecological-based component 2 is an independent and detachable individual mounted on the reaction bed mounting frame 1. It includes an ecological basic body 2-1 and a mounting part 2-2. The mounting part 2-2 is connected to the ecological basic body 2-1 by bolts / clips or other detachable connection methods. After the ecological basic body 2-1 and the mounting part 2-2 are connected, they form the ecological-based component 2. The ecological-based component 2 is movably mounted on the reaction bed mounting frame 1 by means of slide rails / slots or other methods that allow the ecological-based component 2 to be movably connected to the reaction bed mounting frame 1. This design allows the ecological-based component 2 to be easily disassembled and installed. When suspended solids and pollutants in the wastewater accumulate on the surface of the ecological-based component 2, the ecological-based component 2 can be easily disassembled and replaced from the reaction bed mounting frame 1. The operation is simple and modular management and replacement are realized.

[0027] Meanwhile, gaps exist between multiple sets of ecological base components 2 to ensure that the wastewater to be treated and the treated wastewater can flow smoothly and avoid blockages.

[0028] In this embodiment, the ecological basic body 2-1 is woven from a polymer woven material, which has good strength and toughness and low cost. As a carrier for the attachment and growth of microorganisms, it has a high specific surface area and good microbial adhesion, providing a carrier for the growth and reproduction of microorganisms, which can promote the formation of biofilm and thus improve the efficiency of wastewater treatment.

[0029] To provide a localized micro-oxygen environment for the ecological substrate component 2, an aeration device 3 is also connected to it. This aeration device 3 includes aeration pipes and an air volume controller. The aeration pipes consist of three layers of independent micro / nano-tubes, with the pore density decreasing progressively from top to bottom. This allows for separate control of the oxygen content in the surrounding water of the ecological substrate to accommodate different types of bacteria. These three layers of independent micro / nano-tubes are distributed on the reaction bed mounting frame 1 of the ecological substrate component 2, namely, upper micro / nano-tube 3-1, middle micro / nano-tube 3-2, and lower micro / nano-tube 3-3, each independently connected to a micro / nano-bubble generator. The micro / nano-bubble generator is signal-connected to the air volume controller, which precisely controls the aeration rate, allowing for zoned control of the oxygen content in the upper and lower layers of the ecological substrate's surrounding water to accommodate different types of bacteria / microorganisms and meet their growth requirements.

[0030] In this embodiment, the pore density of the upper micro-nano air tube 3-1 gradually decreases to that of the lower micro-nano air tube 3-3. This allows the upper micro-nano air tube 3-1 to generate more micro-nano bubbles, increasing the dissolved oxygen content of the water, while the lower micro-nano air tube 3-3 is mainly used to maintain the micro-oxygen environment of the water.

[0031] In the reaction bed, the aeration rate of the upper micro-nano air pipes 3-1 is increased, creating an aerobic zone with high dissolved oxygen concentration and active nitrifying bacteria, achieving co-current mass transfer from ammonia nitrogen to nitrate nitrogen. The aeration rate of the lower micro-nano air pipes 3-3 is decreased, creating an anoxic / anaerobic zone with low dissolved oxygen concentration and active denitrifying bacteria, achieving hetero-current mass transfer from nitrate nitrogen to nitrogen gas. Combining the characteristics of pollutant and dissolved oxygen distribution in the upper and lower layers of the water body, and by forming a dissolved oxygen gradient and creating an anoxic microenvironment, co-current mass transfer in the upper layer and hetero-current mass transfer in the lower layer are achieved, promoting simultaneous nitrification and denitrification and improving nitrogen removal efficiency.

[0032] Example 2

[0033] This embodiment is largely the same as Embodiment 1, but the material of the ecological basic body 2-1 is different. In this embodiment, the ecological basic body 2-1 is made of porous ceramic, which has a high specific surface area and good microbial adhesion.

[0034] Example 3

[0035] In the micro-oxygen ecological base reaction bed of this embodiment, the upper micro-nano air tubes 3-1 and the lower micro-nano air tubes 3-3 are combined with the ecological base components 2 and set between two adjacent sets of ecological base components 2 to provide different oxygen content environments for the ecological base components and improve oxygen utilization efficiency.

[0036] In practical use, the micro-oxygen ecological-based reactor bed is installed inside the dam body. Wastewater is introduced into the dam body, and the aeration device 3 provides a local micro-oxygen environment for the ecological-based component 2. Microorganisms attach and grow on the surface of the ecological-based component 2-1, purifying the wastewater. Because the ecological-based component 2 is detachable and easy to replace, maintenance and cleaning are more convenient when the micro-oxygen ecological-based reactor bed can no longer maintain efficient wastewater treatment and needs to be replaced, avoiding the problem of filter media clogging. At the same time, the multi-layer structure of the reactor bed mounting frame 1 makes the equipment occupy a small area and has a wider range of applications.

[0037] Furthermore, the design of aeration device 3 not only increases the dissolved oxygen content of the water body and solves the problem of insufficient oxygen supply, but more importantly, it can precisely control the aeration volume of the upper and lower layers of the ecological basic body 2-1, ensuring the optimal growth conditions for different microorganisms. At the same time, it further realizes the same-direction mass transfer in the upper layer and the opposite-direction mass transfer in the lower layer within the reaction bed, promoting nitrification and denitrification to occur simultaneously, improving nitrogen removal efficiency, and enhancing the wastewater treatment efficiency.

[0038] In summary, the micro-oxygen ecological-based reaction bed of this invention, with the ecological-based component 2 detachably mounted on the reaction bed mounting frame 1, avoids the inconvenience of cleaning or replacing the filter media when it becomes clogged, achieving modular management and replacement. This not only facilitates operation but also reduces maintenance costs. The aeration device 3 is connected to the ecological-based component 2, providing a local micro-oxygen environment for the ecological-based component 2, which can ensure optimal growth conditions for microorganisms, improve wastewater treatment efficiency, and has broad application prospects.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "setting," and "forming" should be interpreted broadly; for example, they can refer to fixed connections or settings, detachable connections or settings, or integrated structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components; those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, the terms "embodiment", "specific example" or "practical application" refer to specific features, structures, materials or characteristics described in connection with the embodiment, which are included in at least one embodiment or example of this utility model; the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A micro-oxygen ecological-based reaction bed for agricultural non-point source pollution, comprising a reaction bed mounting frame, ecological-based components, and an aeration device, characterized in that: Multiple sets of the aforementioned eco-based components are detachably mounted on the reaction bed mounting frame; The aeration device is connected to the ecological base component, providing a local micro-oxygen environment for the ecological base component.

2. The micro-oxygen ecological-based reaction bed for agricultural non-point source pollution as described in claim 1, characterized in that, The multiple sets of the ecological base components have gaps between them. Each component includes an ecological base and a mounting part. The ecological base is movably connected to the mounting part, which is detachably connected to the reaction bed mounting frame.

3. The micro-oxygen ecological-based reaction bed applied to agricultural non-point source pollution according to claim 2, characterized in that, The ecological substrate is made of porous ceramic or polymer material. The mounting part is fixedly connected to the ecological substrate by bolts or buckles, and is movably connected to the reaction bed mounting frame by slide rails or slots.

4. The micro-oxygen ecological-based reaction bed for agricultural non-point source pollution as described in claim 3, characterized in that, The polymer material is a polymer woven fabric, and the ecological basic body is woven from the polymer woven fabric.

5. The micro-oxygen ecological-based reaction bed for agricultural non-point source pollution as described in claim 1, characterized in that, The aeration device includes an aeration pipeline and an air volume controller. The aeration pipeline consists of multiple independent micro-nano air tubes, and the pore density on the multiple micro-nano air tubes decreases from top to bottom.

6. The micro-oxygen ecological-based reaction bed applied to agricultural non-point source pollution according to claim 5, characterized in that, The micro-nano air tubes are composed of three layers: an upper layer, a middle layer, and a lower layer.

7. The micro-oxygen ecological-based reaction bed for agricultural non-point source pollution according to claim 6, characterized in that, Each of the micro-nano gas tubes is mounted on the reaction bed mounting frame and is independently connected to a micro-nano bubble generator, which is signal-connected to the gas volume controller.

8. The micro-oxygen ecological-based reaction bed applied to agricultural non-point source pollution according to claim 5, characterized in that, The micro-nano air tubes are combined with the ecological base components and set between two adjacent sets of ecological base components.

9. The micro-oxygen ecological-based reaction bed for agricultural non-point source pollution according to any one of claims 1-8, characterized in that, The reaction bed mounting frame has a multi-layer structure, and each layer of the reaction bed mounting frame is provided with multiple mounting positions for installing ecological base components.

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