Multifunctional lake emergency dephosphorization aeration device

Abstract

According to the multifunctional emergency phosphorus removal aeration device for the lake, the phosphorus removal system is adopted, sewage to be treated is guided into the water inlet pipe after being preliminarily filtered, more than 90% of phosphorus can be removed from the sewage passing through the biological filter layer under the action of the phosphorus adsorption plate, and the water after phosphorus removal is guided into the system, so that the sewage can be recycled. Under the action of oxygen bubbles generated by the aeration pipe grid, microorganisms released by the bottom microorganism particle slow release tank are diffused into a large water area, so that the treatment of eutrophicated rivers and lakes is improved. The aeration system is simple in structure and convenient to use, the aeration system is not provided with a mechanical rotating part in water, the water body is not vibrated violently, organisms in the water body are not damaged, the water body is not easily stirred, deposited pollutants are not easily released into the water body again, and on the other hand, a biological filtering layer formed by microorganisms attached to the ceramsite layer is low in price, resistant to corrosion, light in weight and convenient to use. The porous surface area is large, the stress resistance is good, and the generalizability is high.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and more specifically, to a multifunctional emergency phosphorus removal aeration device for lakes. Background Technology

[0002] Currently, commonly used rapid phosphorus removal methods include chemical precipitation, biological methods, adsorption, ion exchange, and membrane separation. Among these, biological and chemical precipitation are the most widely used methods. However, chemical methods suffer from drawbacks such as high cost, high water content in the produced chemical sludge which is difficult to treat, and a tendency to cause secondary pollution. Biological methods have strict operating conditions, unstable performance, and the effluent quality is prone to failing to meet standards. Of the aforementioned methods, adsorption stands out due to its high efficiency and low energy consumption, making it suitable for phosphorus removal from rivers and lakes. Adsorption also allows for the reuse of adsorbents and effective recovery of phosphorus resources through desorption. Furthermore, adsorption is simple to operate and produces relatively little sludge, making it suitable as a supplement to other phosphorus removal technologies or as an independent process. Therefore, adsorption for phosphorus removal has become a hot topic in the water treatment field and has received widespread attention.

[0003] Currently, the applicant's main method for dealing with algal blooms and cyanobacteria is to spray flocculants and phosphorus-locking agents into the lake. However, the problems with this approach are: firstly, the cost is high, reaching as much as 200,000 yuan per year; secondly, some agents may have side effects on the aquatic ecosystem, causing mass fish deaths and affecting the lake's appearance; and thirdly, flocculants and phosphorus-locking agents only adsorb and settle pollutants at the bottom of the lake, and once there is a major disturbance, the pollutants will be released back from the bottom sediment, failing to fundamentally remove the pollutants.

[0004] Therefore, there is an urgent need to invent a device that can efficiently remove pollutants from water, so as to reduce the problems of high cost and recurring phosphorus removal effect of traditional emergency phosphorus removal materials, while ensuring that the device is easy to maintain, sustainable, and highly mobile; the materials used should be reusable and environmentally friendly. Utility Model Content

[0005] This invention provides a multifunctional emergency phosphorus removal aeration device for lakes to solve the problems of high phosphorus removal costs, recurring issues, and non-reusable materials in existing wastewater treatment processes.

[0006] According to one aspect of this utility model, a multifunctional emergency phosphorus removal aeration device for lakes is provided. This device includes a mounting frame, a float, an aerator, and a slow-release microbial granule tank. Multiple layers of fixed frames are erected between the mounting frames. The float is mounted on the top fixed frame, and the aerator is also mounted on the top fixed frame. A phosphorus removal system is mounted on the lower fixed frame. The slow-release microbial granule tank is connected to the phosphorus removal system via an aeration pipe grid. The aerator is connected to both the aeration pipe grid and the slow-release microbial granule tank via pipes. The phosphorus removal system includes an inlet pipe, phosphorus adsorption plates, and an outlet pipe. The phosphorus adsorption plates form a filter body, with adjacent phosphorus adsorption plates spaced apart and filled with a biological filtration layer. The inlet pipe is connected to the filter body via a submersible pump, and the outlet pipe is connected to the output end of the filter body.

[0007] Based on the above scheme, the preferred option is that the phosphorus adsorption plate is a lanthanum-modified diatomaceous earth adsorption plate.

[0008] Based on the above scheme, it is preferable that the phosphorus adsorption plates in the middle of the filter body are detachably arranged.

[0009] Based on the above scheme, a filter nozzle is provided on the water inlet pipe and a check valve is provided on the water outlet pipe.

[0010] Based on the above scheme, the preferred embodiment is that the aeration grid is composed of multiple rows of hollow metal tubes, and the metal tubes are provided with aeration holes.

[0011] Based on the above scheme, preferably, the top of the float is above the water surface, and a solar panel is provided on the top surface of the float. An energy storage battery and an inverter are provided on the top fixed frame. The solar panel is connected to the energy storage battery through the inverter. The output end of the energy storage battery is connected to the aerator and the submersible pump.

[0012] Based on the above scheme, it is preferred that the mounting frame and the fixing frame are galvanized steel pipes.

[0013] Preferably, based on the above scheme, the fixing frame and the mounting frame are connected by a detachable buckle.

[0014] Based on the above scheme, the preferred option is that the biofiltration layer is a ceramic particle layer with microorganisms attached to its surface.

[0015] This utility model discloses a multifunctional emergency phosphorus removal aeration device for lakes. It adopts a phosphorus removal system, in which the sewage to be treated is introduced into the inlet pipe after preliminary filtration. After passing through the biological filtration layer, the sewage can remove more than 90% of the phosphorus under the action of the phosphorus adsorption plate. The phosphorus-removed water is introduced into the system, and under the action of oxygen bubbles generated by the aeration pipe grid, the microorganisms released by the slow-release irrigation of the bottom microbial particles are diffused into the large water area, so as to improve the treatment of eutrophic rivers and lakes.

[0016] Compared with existing technologies, the multifunctional emergency phosphorus removal aeration device for lakes of this invention has a simple structure and is easy to use. The aeration system has no mechanical rotating parts in the water, so there is no violent shaking of the water body, which will not harm aquatic organisms, does not easily turbid the water body, and does not easily cause the release of deposited pollutants back into the water body. On the other hand, the biological filter layer formed by microorganisms attached to the ceramic granules is inexpensive, corrosion-resistant, lightweight, has a large porous surface area, good stress resistance, and is highly scalable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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. In the drawings:

[0018] Figure 1 This is a schematic diagram of the principle structure of the multifunctional emergency phosphorus removal aeration device for lakes according to this utility model;

[0019] Figure 2 This is a bottom view of the phosphorus removal system of this utility model;

[0020] Figure 3 This is a structural diagram of the aerator of this utility model;

[0021] Explanation of icon numbers:

[0022] Mounting bracket 1, fixing bracket 2, buckle 3, float 4, aerator 5, slow-release microbial granule tank 6, aeration pipe grid 7, aeration hole 71, phosphorus removal system 8, inlet pipe 81, check valve 82, phosphorus adsorption plate 83, outlet pipe 84, filter body 85, biological filter layer 86, submersible pump 87, filter nozzle 88, check valve 89; solar panel 9, energy storage battery 10, inverter 11. Detailed Implementation

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0025] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0026] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0030] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, this utility model discloses a multifunctional emergency phosphorus removal aeration device for lakes, comprising a mounting frame 1, a float 4, an aerator 5, and a slow-release microbial granule tank 6. The mounting frame 1 provides a mounting base for easy fixation to the lake bottom. The float 4 provides buoyancy to prevent the entire device from being completely submerged and to allow part of it to float on the surface; it is preferably made of lightweight materials such as foam. The aerator 5 provides supplemental oxygen.

[0031] The mounting frame 1 of this utility model is provided with multiple layers of fixed frames 2. The float 4 is installed on the top fixed frame 2, and the aerator 5 is installed on the top fixed frame 2. The lower fixed frame 2 is provided with a phosphorus removal system 8. The phosphorus removal system 8 is connected to a microbial particle slow release tank 6 through an aeration pipe grid 7. The aerator 5 is connected to the aeration pipe grid 7 and the microbial particle slow release tank 6 through pipes. The phosphorus removal system 8 includes an inlet pipe 81, a phosphorus adsorption plate 83 and an outlet pipe 84. The phosphorus adsorption plate 83 surrounds to form a filter body 85. Adjacent phosphorus adsorption plates 83 are spaced apart and filled by a biological filter layer 86. The inlet pipe 81 is connected to the filter body 85 through a submersible pump 87, and the outlet pipe 84 is connected to the output end of the filter body 85.

[0032] To prevent the inlet pipe 81 from becoming clogged, this utility model also provides a filter nozzle 88 and a check valve 82 on the inlet pipe 81. The function of the check valve 82 is to close the check valve 82 when the phosphorus removal system 8 is not working, so as to prevent lake water from entering the phosphorus removal system 8. A check valve 89 is provided on the water pipe to prevent external water from flowing back from the outlet to the filter body 85 and affecting its effect.

[0033] When in use, open the check valve 82. The lake water to be treated is filtered through the filter nozzle 88 to remove floating debris such as garbage. Then, it is connected to the submersible pump 87 through the connecting pipe. The submersible pump 87 pressurizes the lake water and delivers it to the phosphorus removal system 8. After entering the phosphorus removal system 8, the lake water first passes through the biological filter layer 86. The biological filter layer 86 is a biofilm formed by microorganisms attaching and growing on loose and porous ceramic particles. As the lake water passes through the biofilm, its pollutants are digested and absorbed by the biofilm.

[0034] After passing through the biological filtration layer 86, the lake water undergoes efficient phosphorus adsorption via the phosphorus adsorption plate 83. The phosphorus adsorption plate 83 is a lanthanum-modified diatomaceous earth adsorption plate. Tests have shown that, regardless of whether the phosphorus-containing wastewater has a high or low concentration, the phosphorus removal rate of the lanthanum-modified diatomaceous earth adsorption plate reaches over 90%. Furthermore, the adsorbed phosphorus on the lanthanum-modified diatomaceous earth adsorption plate can undergo desorption under changes in acidity or alkalinity. Tests have demonstrated that after five adsorption-desorption cycles, the phosphorus adsorption plate 83 exhibits very stable adsorption and desorption effects, with desorption rates exceeding 90% in all five desorption experiments. Therefore, the phosphorus adsorption plate 83 can be reused. Consequently, the phosphorus adsorption plates 83 spaced apart in the filter body 85 of this invention are detachably installed.

[0035] The lake water treated by the phosphorus removal system 8 is discharged from the system through the outlet, and the entire phosphorus removal process is completed. A check valve 82 is installed at the outlet to prevent lake water from entering the system when the phosphorus removal system 8 is not working.

[0036] The aerator 5 of this utility model is an air-lift propulsion type, and its built-in blower delivers air to the aeration grid 7 and the slow-release microbial particle tank 6 through the pipeline.

[0037] The aeration tube grid 7 is composed of multiple rows of hollow metal tubes, each with aeration holes 71 for convenient aeration. Specifically, the metal tubes in this invention should not be too long to avoid insufficient aeration at the ends. A length of 50-80cm is preferable; therefore, it is recommended to install one set of aeration tube grid 7 every 80cm, with each set connected separately to a blower to ensure sufficient aeration.

[0038] In this invention, the top of the float 4 is above the water surface, and a solar cell 10 panel 9 is provided on the top surface of the float 4. An energy storage battery 10 and an inverter are provided on the top fixing frame 2. The solar cell 10 panel 9 is connected to the energy storage battery 10 through the inverter. The output end of the energy storage battery 10 is connected to an aerator 5 and a submersible pump 87 to provide them with working voltage.

[0039] The mounting bracket 1 and the fixing bracket 2 of this utility model are made of galvanized steel pipes, which are not easy to rust. Their bottom ends are inserted into the lake bottom mud to a depth of at least 0.5m. The fixing rod is slidably connected to the equipment by a detachable buckle 3. The detachable buckle 3 and the fixing rod can slide up and down with the water surface without lateral displacement.

[0040] This utility model discloses a multifunctional emergency phosphorus removal aeration device for lakes. It employs a phosphorus removal system 8, which introduces the wastewater to be treated into the inlet pipe 81 after preliminary filtration. After passing through the biological filter layer 86, the wastewater can remove more than 90% of the phosphorus under the action of the phosphorus adsorption plate 83. The phosphorus-removed water is then introduced into the system. Under the action of oxygen bubbles generated by the aeration pipe grid 7, the microorganisms released by the bottom microbial particle slow-release irrigation pipe 6 are diffused into the large water area, thereby improving the treatment of eutrophic rivers and lakes.

[0041] Compared with existing technologies, the multifunctional emergency phosphorus removal aeration device for lakes of this utility model has a simple structure and is easy to use. The aeration system has no mechanical rotating parts in the water, so there is no violent shaking of the water body, which will not harm aquatic organisms, does not easily turbid the water body, and does not easily cause the release of deposited pollutants back into the water body. On the other hand, the biological filter layer 86 formed by microorganisms attached to the ceramic granules is inexpensive, corrosion-resistant, lightweight, has a large porous surface area, good stress resistance, and is highly scalable.

[0042] The aeration pipe grid 7 of this utility model solves the problems of traditional aeration pipes, such as high air pressure, easy clogging, low oxygenation efficiency, immobility, and inconvenient installation and maintenance. It also has a very high efficiency in guiding deep liquid flow and gas-liquid mixing, pulling low-oxygen water at the bottom to the top, pushing gas-liquid mixture away from the oxygenation system, improving the dissolved oxygen status of bottom water in rivers and lakes, dispersing toxic gases, and promoting water flow.

[0043] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multifunctional emergency phosphorus removal aeration device for lakes, characterized in that, The system includes a mounting frame, a float, an aerator, and a slow-release microbial granule tank. Multiple layers of fixed frames are erected between the mounting frames. The float is mounted on the top fixed frame, and the aerator is also mounted on the top fixed frame. A phosphorus removal system is mounted on the lower fixed frame. The slow-release microbial granule tank is connected to the phosphorus removal system via an aeration pipe grid. The aerator is connected to both the aeration pipe grid and the slow-release microbial granule tank via pipes. The phosphorus removal system includes an inlet pipe, phosphorus adsorption plates, and an outlet pipe. The phosphorus adsorption plates form a filter body, with adjacent phosphorus adsorption plates spaced apart and filled by a biological filtration layer. The inlet pipe is connected to the filter body via a submersible pump, and the outlet pipe is connected to the output end of the filter body.

2. The multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The phosphorus adsorption plate is a lanthanum-modified diatomaceous earth adsorption plate.

3. The multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The phosphorus adsorption plates in the middle of the filter body are detachably spaced.

4. The multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The inlet pipe is equipped with a filter nozzle, and the outlet pipe is equipped with a check valve.

5. A multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The aeration grid consists of multiple rows of hollow metal tubes, and the metal tubes are provided with aeration holes.

6. The multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The top of the float is above the water surface, and a solar panel is installed on the top surface of the float. An energy storage battery and an inverter are installed on the top mounting frame. The solar panel is connected to the energy storage battery through the inverter. The output end of the energy storage battery is connected to the aerator and the submersible pump.

7. A multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The mounting bracket and the fixing bracket are made of galvanized steel pipes.

8. A multifunctional emergency phosphorus removal aeration device for lakes as described in claim 7, characterized in that, The fixing frame and the mounting frame are connected by a detachable snap fastener.

9. A multifunctional emergency phosphorus removal aeration device for lakes as described in claim 1, characterized in that, The biofiltration layer is a ceramic particle layer with microorganisms attached to its surface.

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