Solid-liquid separation system

Abstract

The utility model provides a solid-liquid separation system, which is suitable for a culture pond and comprises a box body, a filter and a water inlet pipeline, the at least two filters are located in the box body, are mutually independent and are used for filtering sewage from the culture pond; the number of the water inlet pipelines is the same as that of the filters, the water inlet pipelines are connected to different culture ponds, and the ends, away from the culture ponds, of the water inlet pipelines are connected to the corresponding filters. According to the solid-liquid separation system disclosed by the utility model, the plurality of filters and the water inlet pipeline are combined and connected to different culture ponds, so that culture tail water treatment can be carried out on different culture ponds, and the aim of precisely controlling pollution is fulfilled. And moreover, the filter is integrated into the box body, so that the occupied area of the solid-liquid separation system can be reduced, and the pollution control cost can be reduced.

Description

Technical Field

[0001] This utility model relates generally to the technical field of aquaculture wastewater treatment, and more specifically to a solid-liquid separation system. Background Technology

[0002] In pursuit of greater economic benefits, people in some coastal areas of my country have constructed elevated shrimp ponds on land. These ponds, with their impermeable bottoms and seawater-fed shrimp farming, offer advantages such as convenient wastewater discharge and a relative reduction in shrimp diseases, and were once considered a major innovation in aquaculture. However, with the continuous expansion of farming scale and unregulated development, the wastewater discharge problems of elevated shrimp ponds have become increasingly apparent. Statistics show that the actual utilization rate of shrimp feed is currently only about 15%, with large amounts of protein, nitrogen, and phosphorus being directly discharged into the aquatic environment without scientific treatment, causing eutrophication of seawater, exacerbating marine pollution, and even creating black pollution belts. The highly concentrated and irrationally laid-out farming sites, coupled with high wastewater treatment costs, have left the treatment of elevated shrimp ponds in a state of "problems with no solutions."

[0003] The commonly used method for treating aquaculture wastewater is the "three ponds and two dams" process. However, practice has shown that this method not only requires a large area but is also unsuitable for treating high-level shrimp ponds. The main reason is that it fails to address the solid-liquid problem in aquaculture wastewater at its source, allowing major pollutants such as shrimp feces and uneaten feed to remain in the water for extended periods.

[0004] Therefore, there is a need to provide a solid-liquid separation system to at least partially solve the above problems. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, this utility model provides a solid-liquid separation system suitable for aquaculture ponds, the solid-liquid separation system comprising:

[0007] Box;

[0008] A filter, located inside the housing, wherein there are at least two independent filters, used to filter wastewater from the aquaculture pond;

[0009] The number of water inlet pipes is the same as that of the filter. The water inlet pipes are respectively connected to different breeding ponds, and the end of the water inlet pipe away from the breeding pond is connected to the corresponding filter.

[0010] Optionally, the water inlet pipe includes:

[0011] A first pipe, one end of which is connected to the aquaculture pond;

[0012] A self-priming pump, which is located inside the housing and connected to the first pipe;

[0013] The second pipe has its two ends connected to the self-priming pump and the filter, respectively, and is equipped with a flow meter.

[0014] Optionally, the filtration mechanism is constructed as a centrifugal filter.

[0015] Optionally, the filter includes:

[0016] Casing; and

[0017] A filter cartridge, which is pivotally connected to the housing about its own axial direction;

[0018] The water outlet direction of the inlet pipe is configured to be inclined relative to the axial direction of the filter cartridge, so that the water outlet of the inlet pipe impacts the filter cartridge, thereby driving the filter cartridge to pivot.

[0019] Optionally, the solid-liquid separation system further includes a clear water tank located below the filter, the filter having a first outlet communicating with the clear water tank, and the clear water tank having a second outlet communicating with the outside of the housing.

[0020] Optionally, the solid-liquid separation system further includes a sludge tank located below the filter, the filter having a first outlet communicating with the sludge tank.

[0021] Optionally, the solid-liquid separation system further includes a sedimentation tank located inside the tank, and the sludge discharge trough is connected to the sedimentation tank.

[0022] Optionally, the sedimentation tank includes:

[0023] Pool body;

[0024] A water inlet baffle, wherein the water inlet baffle is located inside the pool body;

[0025] A scum baffle is located inside the pool body and spaced apart from the water inlet baffle, with the bottom surface of the scum baffle being higher than the bottom surface of the water inlet baffle.

[0026] An overflow weir is located inside the pool body. The overflow weir is located on the side of the scum baffle away from the inlet baffle. The inlet baffle is closer to the drain trough than the scum baffle.

[0027] Optionally, the solid-liquid separation system further includes a sieve frame located outside the housing, and the sedimentation tank has a second outlet communicating with the sieve frame;

[0028] The sedimentation tank also includes a third outlet that communicates with the outside of the tank body. The third outlet is located above the second outlet, and the height of the third outlet is not lower than the bottom height of the overflow weir.

[0029] Optionally, the sedimentation tank further includes a material guiding component located at the bottom inner side of the tank body, the material guiding component being configured to slope downwards from the sludge discharge trough toward the screen frame.

[0030] Optionally, a level gauge is installed inside the sedimentation tank, and the level gauge is located between the second outlet and the third outlet in the vertical direction.

[0031] Optionally, the solid-liquid separation system further includes:

[0032] A control cabinet, which is located inside the enclosure;

[0033] An air compressor is located inside the housing and is electrically connected to the control cabinet and the water inlet pipe.

[0034] Optionally, the container dimensions are configured as standard container dimensions.

[0035] The solid-liquid separation system of this invention connects multiple filters and inlet pipes to different aquaculture ponds, enabling precise treatment of aquaculture wastewater from various ponds. Furthermore, the integration of the filters into the housing reduces the system's footprint and lowers treatment costs. Attached Figure Description

[0036] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0037] Figure 1 This is a schematic diagram of a solid-liquid separation system according to a preferred embodiment of the present invention;

[0038] Figure 2 For along Figure 1 A schematic cross-sectional view cut along the midline AA; and

[0039] Figure 3 For along Figure 1 A schematic cross-sectional view taken along the midline BB.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Solid-liquid separation system 11. Box body

[0042] 12 Filter 12a Housing

[0043] 12b First outlet; 12c First discharge outlet

[0044] 13 Water inlet pipe 13a First pipe

[0045] 13b Self-priming pump 13c Second pipeline

[0046] 13d Flow Meter 14 Clear Water Tank

[0047] 14a Second outlet 15 Sewage tank

[0048] 16 Sedimentation tank 16a tank body

[0049] 16b Inlet baffle; 16c Scum baffle

[0050] 16d Overflow weir, 16e Second outlet

[0051] 16f Third row outlet 16g Material guide component

[0052] 17 Screen frame 18 Control cabinet

[0053] 19 Air compressor 20 Liquid level gauge

[0054] DH (vertical direction) Detailed Implementation

[0055] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0056] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0057] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0058] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0059] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0060] This invention provides a solid-liquid separation system suitable for treating aquaculture wastewater from aquaculture ponds.

[0061] Please see Figure 1 The solid-liquid separation system 1 may include a housing 11, a filter 12, and an inlet pipe 13. Specifically, the filter 12 is located inside the housing 11, and there are at least two independent filters 12. The filters 12 are used to filter wastewater (aquaculture tailwater) from the aquaculture ponds. The number of inlet pipes 13 is the same as the number of filters 12, and the inlet pipes 13 are connected to different aquaculture ponds. The end of the inlet pipe 13 away from the aquaculture pond is connected to the corresponding filter 12.

[0062] According to the solid-liquid separation system 1 of this utility model, multiple filters 12 are connected to different aquaculture ponds via a combination of inlet pipes 13, enabling the treatment of aquaculture wastewater from different ponds to achieve precise pollution control. Furthermore, the filters 12 are integrated into the housing 11, reducing the footprint of the solid-liquid separation system 1 and thus lowering pollution control costs.

[0063] It should be noted that, Figure 1In this design, there are three filters 12 and three inlet pipes 13. That is, the filters 12 and the inlet pipes 13 are combined into three sets, which are independent of each other and connected to different aquaculture ponds to treat the aquaculture wastewater in different ponds. The dimensions of the housing 11 can be constructed to the standard dimensions of a shipping container.

[0064] Please continue reading. Figure 1 and Figure 2 Furthermore, the inlet pipe 13 includes a first pipe 13a, a self-priming pump 13b, and a second pipe 13c. One end of the first pipe 13a is connected to the aquaculture tank. The self-priming pump 13b is located inside the housing 11 and connected to the first pipe 13a; in other words, the end of the first pipe 13a furthest from the aquaculture tank is connected to the self-priming pump 13b. The two ends of the second pipe 13c are connected to the self-priming pump 13b and the filter 12, respectively. Understandably, when the self-priming pump 13b is operating, the aquaculture wastewater from the aquaculture tank enters through the first pipe 13a, passes through the self-priming pump 13b, and is then transported to the filter 12 for treatment via the second pipe 13c. To monitor the flow rate of the aquaculture wastewater, a flow meter 13d is also installed in the second pipe 13c. The filter 12 can be constructed as a centrifugal filter. Understandably, the filter 12 has a filter screen; preferably, the filter screen is 600-800 mesh, for example, 600, 650, 700, 750, or 800 mesh. The filter 12 includes a housing 12a and a filter cartridge, the filter cartridge being pivotally connected to the housing 12a about its own axial direction. Furthermore, the outlet direction of the inlet pipe 13 is configured to be inclined relative to the axial direction of the filter cartridge, so that the water outlet from the inlet pipe 13 impacts the filter cartridge, thereby driving the filter cartridge to pivot. In addition, the filter 12 is equipped with a sterilization device, such as an ultraviolet germicidal lamp, to sterilize the aquaculture wastewater.

[0065] Please see Figure 2 The solid-liquid separation system also includes a clear water tank 14, located below the filter 12, which has a first outlet 12b communicating with the clear water tank 14. (Return to reference) Figure 1 The clear water tank 14 has a second outlet 14a that communicates with the outside of the tank body 11. Please continue reading. Figure 1 and Figure 2 The solid-liquid separation system 1 also includes a sludge discharge tank 15 and a sedimentation tank 16. The sludge discharge tank 15 is located below the filter 12, and the filter 12 has a first discharge outlet 12c communicating with the sludge discharge tank 15. The sedimentation tank 16 is located inside the housing 11, and the sludge discharge tank 15 communicates with the sedimentation tank 16. For details, please refer to... Figure 1 and Figure 3The sedimentation tank 16 includes a tank body 16a, an inlet baffle 16b, a scum baffle 16c, and an overflow weir 16d. The inlet baffle 16b is located inside the tank body 16a, and the scum baffle 16c is located inside the tank body 16a and spaced apart from the inlet baffle 16b, with the bottom surface of the scum baffle 16c higher than the bottom surface of the inlet baffle 16b. The overflow weir 16d is located inside the tank body 16a, on the side of the scum baffle 16c away from the inlet baffle 16b; in other words, the scum baffle 16c is located between the inlet baffle 16b and the overflow weir 16d. The inlet baffle 16b is closer to the sludge discharge trough 15 than the scum baffle 16c.

[0066] Please continue reading. Figure 1 and Figure 3 The solid-liquid separation system 1 also includes a screen frame 17 located outside the housing 11. The sedimentation tank 16 has a second outlet 16e communicating with the screen frame 17. The sedimentation tank 16 also includes a third outlet 16f communicating with the outside of the housing 11, the height of which is not lower than the bottom height of the overflow weir 16d. To promptly discharge sludge from the sedimentation tank 16, a level gauge 20 is installed inside the sedimentation tank 16, positioned vertically DH between the second outlet 16e and the third outlet 16f. That is, the level gauge 20 monitors the sludge depth in the sedimentation tank 16. Once the accumulated sludge depth reaches a certain level, it controls the opening of the second outlet 16e to discharge the sludge to the screen frame 17. It is conceivable that, to facilitate the discharge of sludge through the second outlet 16e, the sludge can be gathered near the second outlet 16e. Accordingly, the sedimentation tank 16 also includes a material guiding component 16g, which is located at the bottom inner side of the tank body 16a. The material guiding component 16g has a material guiding surface. Figure 3 In this design, the guiding surface is the upper surface of the guiding component 16g. The guiding surface of the guiding component 16g is inclined relative to the vertical direction DH. Specifically, the guiding surface of the guiding component 16g is constructed to slope downwards from the discharge trough 15 towards the screen frame 17. It should be noted that the guiding component 16g can be an inclined plate-like component, or it can be... Figure 3 The prism-shaped member shown is illustrated.

[0067] Return to reference Figure 1 The solid-liquid separation system 1 also includes a control cabinet 18 and an air compressor 19. The control cabinet 18 is located inside the housing 11, and the air compressor 19 is located inside the housing 11. The air compressor 19 is electrically connected to the control cabinet 18 and the water inlet pipe 13. Figure 1 In the middle, the control cabinet 18 and the air compressor 19 are spaced apart along the length of the housing 11.

[0068] The following is a brief description of a process for treating aquaculture wastewater using the solid-liquid separation system 1 of this invention:

[0069] Based on actual usage requirements, the control cabinet 18 controls the connection between the corresponding filter 12 and the aquaculture pond. The self-priming pump 13b is started, and the aquaculture wastewater from the pond enters through the first pipe 13a. After passing through the self-priming pump 13b, it is transported to the filter 12 for treatment via the second pipe 13c. During this process, the flow meter 13d measures the instantaneous and cumulative flow of the aquaculture wastewater in the second pipe 13c. The wastewater is discharged through a branch pipe to impact the filter cartridge, causing it to rotate at high speed, achieving efficient interception, rapid inflow and outflow, and seamless separation. The highly ejected water droplets come into full contact with the air and are then subjected to oxygenation and sterilization by the sterilization device.

[0070] The filtered water from filter 12 falls into the clear water pool 14 below through the first outlet 12b. The filtered aquaculture wastewater is discharged into the sludge tank 15 through the first outlet 12c, and then enters the sedimentation tank 16. After sedimentation, the aquaculture wastewater separates into two layers: the upper layer is supernatant, which overflows and is discharged through the overflow weir 16d and the third outlet 16f. The lower layer is concentrated manure. The level gauge 20 monitors the depth of manure in the sedimentation tank 16. Once the manure reaches a certain depth, the control cabinet 18 receives and processes the signal from the level gauge 20 to control the opening of the second outlet 16e, thus discharging the manure into the screen frame 17. The manure remains in the screen frame 17 for a long period, significantly reducing its moisture content and facilitating subsequent resource utilization.

[0071] According to the solid-liquid separation system 1 of this utility model, multiple filters 12 are connected to different aquaculture ponds via an inlet pipe 13, enabling the treatment of aquaculture wastewater from different ponds to achieve precise wastewater treatment without the need for a wastewater collection pond. Furthermore, the solid-liquid separation system integrates multiple devices into a container 11, conforming to container loading standards, occupying a small area, and is suitable for aquaculture ponds, such as elevated shrimp ponds. Employing a "high-efficiency filtration + physical sedimentation" method, it completely solves the solid-liquid separation problem in aquaculture ponds.

[0072] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0073] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A solid-liquid separation system suitable for aquaculture ponds, characterized in that, The solid-liquid separation system includes: Box; A filter, located within the housing, comprising at least two independent filters for filtering wastewater from the aquaculture pond, wherein the filter is constructed as a centrifugal filter and includes a housing and a filter cartridge, the filter cartridge being pivotally connected to the housing about its own axial direction; The inlet pipes are the same number as the filters. The inlet pipes are connected to different aquaculture ponds. The end of the inlet pipe away from the aquaculture pond is connected to the corresponding filter. The outlet direction of the inlet pipe is constructed to be inclined relative to the axial direction of the filter cartridge, so that the water outlet of the inlet pipe impacts the filter cartridge, thereby driving the filter cartridge to pivot. A drain trough, located below the filter, the filter having a first outlet communicating with the drain trough; and A sedimentation tank is located inside the tank, and the sewage discharge trough is connected to the sedimentation tank.

2. The solid-liquid separation system according to claim 1, characterized in that, The water inlet pipe includes: A first pipe, one end of which is connected to the aquaculture pond; A self-priming pump, which is located inside the housing and connected to the first pipe; The second pipe has its two ends connected to the self-priming pump and the filter, respectively, and is equipped with a flow meter.

3. The solid-liquid separation system according to claim 1, characterized in that, The solid-liquid separation system also includes a clear water tank located below the filter. The filter has a first outlet connected to the clear water tank, and the clear water tank has a second outlet connected to the outside of the housing.

4. The solid-liquid separation system according to claim 1, characterized in that, The sedimentation tank includes: Pool body; A water inlet baffle, wherein the water inlet baffle is located inside the pool body; A scum baffle is located inside the pool body and spaced apart from the water inlet baffle, with the bottom surface of the scum baffle being higher than the bottom surface of the water inlet baffle. An overflow weir is located inside the pool body. The overflow weir is located on the side of the scum baffle away from the inlet baffle. The inlet baffle is closer to the drain trough than the scum baffle.

5. The solid-liquid separation system according to claim 4, characterized in that, The solid-liquid separation system further includes a sieve frame located outside the housing, and the sedimentation tank has a second outlet communicating with the sieve frame. The sedimentation tank also includes a third outlet that communicates with the outside of the tank body. The third outlet is located above the second outlet, and the height of the third outlet is not lower than the bottom height of the overflow weir.

6. The solid-liquid separation system according to claim 5, characterized in that, The sedimentation tank also includes a material guiding component, which is located at the bottom inner side of the tank body and is configured to slope downwards from the sludge discharge trough toward the screen frame.

7. The solid-liquid separation system according to claim 5, characterized in that, The sedimentation tank is equipped with a level gauge, which is located vertically between the second outlet and the third outlet.

8. The solid-liquid separation system according to any one of claims 1 to 7, characterized in that, The solid-liquid separation system also includes: A control cabinet, which is located inside the enclosure; An air compressor is located inside the housing and is electrically connected to the control cabinet and the water inlet pipe.

9. The solid-liquid separation system according to any one of claims 1 to 7, characterized in that, The dimensions of the container are those of a standard shipping container.

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