Adjustable phosphorus removal reaction device and system

Abstract

The utility model discloses an adjustable phosphorus removal reaction device and system, and belongs to the technical field of aquaculture tail water treatment. Comprising a frame and a plurality of reaction units arranged on the frame at intervals; the reaction unit comprises a driving mechanism, a rotating shaft and a reaction membrane plate, the rotating shaft is rotationally installed in the frame, the reaction membrane plate is installed on the rotating shaft, the driving mechanism is installed on the outer side face of the frame and used for driving the rotating shaft to rotate, the rotating shaft drives the reaction membrane plate to rotate, and an included angle is formed between the reaction membrane plate and the water flow direction; a water body to be treated flows through a gap between two adjacent reaction membrane plates in the frame; the included angle between the reaction diaphragm plate and the water flow direction can be adjusted to change the water flow path and the flowing time, so that the water flow speed is controlled, and the reaction efficiency is improved; various working modes can be realized, so that the phosphorus removal efficiency is improved, the phosphorus removal effect is improved, and the total phosphorus content in the aquaculture tail water reaches the emission standard.

Description

Technical Field

[0001] This utility model relates to an adjustable phosphorus removal reaction device and system, belonging to the field of aquaculture wastewater treatment technology. Background Technology

[0002] Aquaculture wastewater refers to wastewater containing organic matter such as uneaten feed, feces, and metabolic products generated during aquaculture. If discharged directly without treatment, it will cause serious pollution to the aquatic environment, leading to problems such as eutrophication. Therefore, aquaculture wastewater treatment technology is of great significance for protecting the aquatic environment and promoting the sustainable development of aquaculture.

[0003] The total phosphorus content in aquaculture wastewater is usually quite high. Even after natural sedimentation, a large amount of soluble phosphate remains, causing the total phosphorus content in the water to still exceed the standard. To solve the problem of excessive total phosphorus content in aquaculture wastewater, filter dams are usually set up along the water flow path, with phosphorus removal packing material placed in the filter dams. When the water flows through the filter dam, it reacts with the phosphorus removal packing material, thereby achieving the effect of phosphorus removal. However, the water flow path through the filter dam is fixed, so the water flow direction and speed cannot be adjusted, and the reaction process between the water and the phosphorus removal packing material cannot be controlled. At the same time, filter dams composed of adsorption-type packing material are prone to clogging, making cleaning difficult during operation and maintenance. Moreover, filter dams composed of adsorption-type packing material are difficult to control the removal rate, resulting in an imbalance of high efficiency in the early stage, excessive water purification, and low purification efficiency in the later stage, leading to insufficient water purification capacity. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an adjustable phosphorus removal reaction device and system.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An adjustable phosphorus removal reactor includes a frame and multiple reaction units spaced apart on the frame.

[0007] The reaction unit includes a drive mechanism, a rotating shaft, and a reaction membrane plate. The rotating shaft is rotatably installed inside the frame, and the reaction membrane plate is installed on the rotating shaft. The drive mechanism is installed on the outer side of the frame and is used to drive the rotating shaft to rotate. The rotating shaft drives the reaction membrane plate to rotate, and the reaction membrane plate forms an angle with the direction of water flow.

[0008] The water to be treated flows through the gap between two adjacent reaction membrane plates inside the frame.

[0009] As a preferred embodiment of this invention, the length direction of the rotating shaft is parallel to the horizontal direction, and multiple reaction units are arranged at intervals along the vertical direction on the frame.

[0010] As a preferred embodiment of this invention, the plurality of reaction units are arranged at equal intervals.

[0011] As a preferred embodiment of this invention, the reaction membrane plate includes a water-impermeable partition and a phosphorus removal filler layer, wherein the water-impermeable partition is connected to a rotating shaft, and the phosphorus removal filler layer is disposed on the surface of the water-impermeable partition.

[0012] As a preferred embodiment of this utility model, the phosphorus removal filler layer is fixed to the surface of the impermeable partition by a steel mesh or grid plate, or is glued to the surface of the impermeable partition.

[0013] As a preferred embodiment of this invention, the surface of the impermeable baffle is flat or has curvature, and the phosphorus removal filler layer adopts non-porous or surface-adsorbed phosphorus removal filler.

[0014] As a preferred embodiment of this invention, the driving mechanism is any one of a motor driving mechanism, a hydraulic driving mechanism, or an electric actuator driving mechanism.

[0015] As a preferred embodiment of this invention, the drive mechanism is communicatively connected to an external control system, which is used to control the operation of the drive mechanism.

[0016] As a preferred embodiment of this invention, water environment monitoring sensors are respectively installed in the upstream and downstream water bodies flowing through the frame, and the water environment monitoring sensors are communicatively connected to an external control system.

[0017] An adjustable phosphorus removal reaction system includes at least two of the aforementioned adjustable phosphorus removal reaction devices, which are arranged sequentially along the water flow direction.

[0018] The advantages of this utility model are:

[0019] (1) The angle between the reaction membrane and the water flow direction can be adjusted to change the water flow path and flow time, thereby controlling the water flow speed and the reaction process between the water flow and the phosphorus removal packing layer, and improving the reaction efficiency.

[0020] (2) Adjust the angle between two adjacent reaction membrane plates to form a ">" shaped angle relative to the water-facing surface. When the water flows into the ">" shaped angle, it is resisted and deflected, resulting in local turbulence and increased flow velocity. This forms a backwash on the phosphorus removal packing layer on the surface of the two reaction membrane plates. In addition, the flow velocity of the water flowing through the gaps of the reaction membrane plates in some reaction units will also increase, which will also have a certain flushing effect on the phosphorus removal packing layer on the surface of the reaction membrane plates in some reaction units, extending the life of the phosphorus removal packing layer and reducing the energy consumption of external equipment flushing.

[0021] (3) When two adjacent reaction membranes form a ">" angle on the water-facing side and a "<" angle on the water-repellent side, the corresponding water flow channel is closed, reducing the contact between the phosphorus removal packing layer of the reaction membrane and the water flow, thereby controlling the reaction efficiency of water purification, controlling the effluent water quality, and controlling the reaction consumption of the phosphorus removal packing layer of the reaction membrane.

[0022] (4) By controlling the angle between the reaction membrane plate of different water layers and the direction of water flow, the water flow velocity of different water layers is different, thereby realizing the stratified reaction of the water body and making the phosphorus removal process more reasonable;

[0023] (5) Multiple adjustable phosphorus removal reaction devices can be set up in sequence along the water flow direction to improve phosphorus removal efficiency, enhance phosphorus removal effect, and ensure that the total phosphorus content in the aquaculture tail water meets the discharge standard. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the reaction membrane plate of this utility model;

[0026] Figure 3 This is a schematic diagram of multiple reaction membrane plates in water according to Embodiment 1 of this utility model. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of multiple reaction membrane plates in water according to Embodiment 1 of this utility model. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of multiple reaction membrane plates in water according to Embodiment 1 of this utility model. Figure 3 ;

[0029] Figure 6 This is a schematic diagram of multiple reaction membrane plates in water according to Embodiment 2 of this utility model.

[0030] Meaning of the reference numerals in the diagram:

[0031] 1-Frame, 2-Drive mechanism, 3-Rotating shaft;

[0032] 4-Reaction membrane plate, 41-Impervious partition, 42-Phosphorus removal filler layer. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] like Figure 1-5As shown, this embodiment is an adjustable phosphorus removal reaction device, including a frame 1 and multiple reaction units spaced apart on the frame 1. The frame 1 is integrated with the shoreline civil engineering. The reaction unit includes a drive mechanism 2, a rotating shaft 3, and a reaction membrane plate 4. The rotating shaft 3 is rotatably installed inside the frame 1, and the reaction membrane plate 4 is installed on the rotating shaft 3. The drive mechanism 2 is installed on the outer side of the frame 1 and is used to drive the rotating shaft 3 to rotate. The rotating shaft 3 drives the reaction membrane plate 4 to rotate, so that the reaction membrane plate 4 forms an angle with the water flow direction. The water to be treated flows through the gap between two adjacent reaction membrane plates 4 inside the frame 1. The water to be treated reacts with the reaction membrane plate 4 to remove phosphorus, thereby removing the total phosphorus content in the water.

[0036] In this embodiment, the length direction of the rotating shaft 3 is parallel to the horizontal direction, and multiple reaction units are arranged at intervals along the vertical direction on the frame 1. That is, multiple reaction units are arranged vertically at intervals in a direction perpendicular to the horizontal plane, and multiple reaction units in this embodiment are arranged at equal intervals.

[0037] like Figure 2 As shown, the reaction membrane plate 4 in this embodiment includes an impermeable baffle 41 and a phosphorus removal packing layer 42. The impermeable baffle 41 is connected to the rotating shaft 3, and the phosphorus removal packing layer 42 is disposed on the surface of the impermeable baffle 41. In this embodiment, the phosphorus removal packing layer 42 is disposed on both sides of the impermeable baffle 41. The water to be treated comes into contact with the phosphorus removal packing layer 42 and undergoes a chemical reaction, thereby achieving the phosphorus removal effect. In this embodiment, the phosphorus removal packing layer 42 is fixed to the surface of the impermeable baffle 41 by a steel mesh. In actual application, the phosphorus removal packing layer 42 can also be fixed to the surface of the impermeable baffle 41 by a grid plate or glued to the surface of the impermeable baffle 41. In this embodiment, the surface of the impermeable baffle 41 is flat. In actual application, the surface of the impermeable baffle 41 can also have a certain curvature, thereby further increasing the effect of turbulence generated on the surface.

[0038] In this embodiment, the phosphorus removal packing layer 42 uses a non-porous or surface-adsorbed phosphorus removal packing. This type of packing produces precipitates through chemical reactions. It is composed of low-alkalinity cement, fly ash, a calcium-magnesium mixture, and a ferric sulfate mixture. The low-alkalinity cement acts as a binder, enhancing the structural stability of the packing. During water treatment, calcium ions in the cement react with phosphate ions to form insoluble calcium phosphate precipitates, thus achieving phosphorus removal. Fly ash contains abundant silicates and aluminates, which can act as active materials in the chemical reaction, promoting phosphate removal. The calcium-magnesium mixture provides calcium and magnesium ions, which react with phosphate ions to form insoluble calcium phosphate precipitates. Phosphate precipitates are removed, thus achieving phosphorus removal. The presence of magnesium ions can also increase the solubility of calcium phosphate, further promoting the removal of phosphate and improving phosphorus removal efficiency. Ferric sulfate mixture is a commonly used chemical phosphorus removal agent. The iron ions in it can form insoluble ferric phosphate precipitates with phosphate, effectively removing phosphorus from the water. In addition to removing phosphorus, ferric sulfate mixture can also promote the removal of other pollutants through the redox reaction of iron ions. Non-porous or surface adsorption phosphorus removal fillers remove phosphorus from the water directly through chemical reactions, rather than relying on adsorption. They have important application value in the fields of water treatment and environmental protection, and can effectively reduce the total phosphorus content in aquaculture effluent, so that the total phosphorus content in aquaculture effluent meets the discharge standards.

[0039] In this embodiment, the drive mechanism 2 adopts a motor drive mechanism, which includes a motor and a gear transmission assembly. The motor is connected to the rotating shaft 3 through the gear transmission assembly. In practical applications, the drive mechanism 2 can also adopt a hydraulic drive mechanism or an electric actuator drive mechanism. The hydraulic drive mechanism includes a hydraulic cylinder and a gear and rack assembly. The hydraulic cylinder is connected to the rotating shaft 3 through the gear and rack assembly. The electric actuator drive mechanism includes an electric actuator and a gear and rack assembly. The electric actuator is connected to the rotating shaft 3 through the gear and rack assembly.

[0040] In this embodiment, the drive mechanism 2 is communicatively connected to an external control system, which controls the operation of the drive mechanism 2. Simultaneously, water environment monitoring sensors are installed in the upstream and downstream water bodies flowing through the frame 1. These sensors are communicatively connected to the external control system and are used to monitor water environment parameter data. This allows back-end personnel to understand the water conditions in a timely manner and control the drive mechanism 2 through the external control system. This adjusts the angle between the reaction membrane plate 4 and the water flow direction, thereby adjusting the water flow direction and speed through the phosphorus removal reaction device and controlling the reaction process between the water flow and the packing material.

[0041] The working methods of this embodiment include, but are not limited to, the following:

[0042] Work Method 1 (Regular Work Method):

[0043] like Figure 3 As shown, the reaction membrane plate 4 is rotated by the drive mechanism 2, so that the reaction membrane plates 4 of multiple reaction units are parallel to each other and form a certain angle with the water flow direction. The water flows through the gap between two adjacent reaction membrane plates 4, and the water flows chemically with the phosphorus removal packing layer 42 of the reaction membrane plate 4 to achieve phosphorus removal. Since the phosphorus removal packing layer 42 is a non-porous or surface adsorption phosphorus removal packing, no adsorption is generated during the reaction, so as not to cause blockage. Since the reaction membrane plate 4 forms a certain angle with the water flow direction, the water flow path and flow time can be changed, thereby controlling the water flow speed and the reaction process between the water flow and the phosphorus removal packing layer 42, and improving the reaction efficiency.

[0044] Working mode two (backwashing working mode):

[0045] like Figure 4 As shown, the driving mechanism 2 controls the rotation of the reaction membrane plate 4, so that the reaction membrane plates 4 of some reaction units are parallel to each other and form a certain angle with the water flow direction. The water flows through the gap between two adjacent reaction membrane plates 4, and the water flows with the phosphorus removal packing layer 42 of the reaction membrane plate 4 to achieve phosphorus removal. In the remaining reaction units, two adjacent reaction membrane plates 4 form a ">" shaped angle, with the open end of the ">" shaped angle facing the water flow direction. When the water flows into the ">" shaped angle, it is resisted and deflected, and local turbulence is generated, and the flow velocity increases, which forms a backwash on the phosphorus removal packing layer 42 on the surface of the two reaction membrane plates 4. In addition, the water flow velocity through the gap of the reaction membrane plate 4 of some reaction units will also increase, which will also have a certain flushing effect on the phosphorus removal packing layer 42 on the surface of the reaction membrane plate 4 of some reaction units, extending the service life of the phosphorus removal packing layer 42 and reducing the energy consumption of external equipment flushing.

[0046] When two adjacent reaction membrane plates 4 form a ">" angle on their water-facing sides and a "<" angle on their back sides, the corresponding water flow channel is closed, reducing the contact between the phosphorus removal packing layer 42 of the reaction membrane plate 4 and the water flow, thereby controlling the reaction efficiency of water purification, controlling the effluent water quality, and controlling the reaction consumption of the phosphorus removal packing layer 42 of the reaction membrane plate 4.

[0047] Working Method 3 (Water Body Stratification Working Method):

[0048] like Figure 5As shown, the driving mechanism 2 controls the rotation of the reaction membrane plate 4, so that the angle between the reaction membrane plate 4 located in different water layers and the direction of water flow is different. For example, if the phosphorus content of the deep water layer is higher and the phosphorus content of the shallow water layer is lower, the angle between the reaction membrane plate 4 in the deep water layer and the direction of water flow is increased, thus increasing the flow time of the deep water layer, that is, prolonging the reaction time between the deep water layer and the phosphorus removal packing layer 42. The angle between the reaction membrane plate 4 in the shallow water layer and the direction of water flow is decreased, thus decreasing the flow time of the shallow water layer, that is, shortening the reaction time between the shallow water layer and the phosphorus removal packing layer 42. By controlling the different angles between the reaction membrane plate 4 in different water layers and the direction of water flow, different water flow velocities are achieved in different water layers, thereby realizing the stratified reaction of the water body and making the phosphorus removal process more reasonable.

[0049] Example 2

[0050] like Figure 6 As shown, this embodiment is an adjustable phosphorus removal reaction system, including two adjustable phosphorus removal reaction devices as described in Embodiment 1. The two adjustable phosphorus removal reaction devices are arranged sequentially along the water flow direction, with the water flow direction in one adjustable phosphorus removal reaction device inclined downward and the water flow direction in the other adjustable phosphorus removal reaction device inclined upward. Of course, in practical applications, multiple adjustable phosphorus removal reaction devices as described in Embodiment 1 can also be arranged sequentially along the water flow direction to improve phosphorus removal efficiency, enhance phosphorus removal effect, and ensure that the total phosphorus content in the aquaculture effluent meets the discharge standards.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "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.

[0052] 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 connection or setting, detachable connection or setting, or an integrated structure; they can refer to direct connection, indirect connection through an intermediate medium, or internal communication 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.

[0053] 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.

[0054] 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. An adjustable phosphorus removal reaction device, characterized in that: Includes a frame and multiple reaction units spaced apart on the frame; The reaction unit includes a drive mechanism, a rotating shaft, and a reaction membrane plate. The rotating shaft is rotatably installed inside the frame, and the reaction membrane plate is installed on the rotating shaft. The drive mechanism is installed on the outer side of the frame and is used to drive the rotating shaft to rotate. The rotating shaft drives the reaction membrane plate to rotate, and the reaction membrane plate forms an angle with the direction of water flow. The water to be treated flows through the gap between two adjacent reaction membrane plates inside the frame.

2. The adjustable phosphorus removal reactor according to claim 1, characterized in that, The length of the rotating shaft is parallel to the horizontal direction, and multiple reaction units are arranged at intervals along the vertical direction on the frame.

3. An adjustable phosphorus removal reactor according to claim 1 or 2, characterized in that, The multiple reaction units are arranged at equal intervals.

4. The adjustable phosphorus removal reactor according to claim 1, characterized in that, The reaction membrane plate includes a water-impermeable partition and a phosphorus removal filler layer. The water-impermeable partition is connected to the rotating shaft, and the phosphorus removal filler layer is disposed on the surface of the water-impermeable partition.

5. The adjustable phosphorus removal reactor according to claim 4, characterized in that, The phosphorus removal filler layer is fixed to the surface of the impermeable partition by a steel mesh or grid plate, or glued to the surface of the impermeable partition.

6. An adjustable phosphorus removal reactor according to claim 4 or 5, characterized in that, The surface of the impermeable baffle is flat or has curvature, and the phosphorus removal filler layer uses non-porous or surface-adsorbed phosphorus removal filler.

7. The adjustable phosphorus removal reactor according to claim 1, characterized in that, The drive mechanism can be any one of a motor drive mechanism, a hydraulic drive mechanism, or an electric actuator drive mechanism.

8. An adjustable phosphorus removal reactor according to claim 1 or 7, characterized in that, The drive mechanism is communicatively connected to an external control system, which is used to control the operation of the drive mechanism.

9. An adjustable phosphorus removal reactor according to claim 8, characterized in that, Water environment monitoring sensors are installed in the upstream and downstream water bodies flowing through the frame, and the water environment monitoring sensors are communicatively connected to an external control system.

10. An adjustable phosphorus removal reaction system, characterized in that: It includes at least two adjustable phosphorus removal reactors as described in claim 1, wherein the at least two adjustable phosphorus removal reactors are arranged sequentially along the water flow direction.

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