High-silt-content seawater desalination device

Abstract

The utility model relates to a high-mud-content seawater desalination device. Comprising a container, and a precipitation filtering assembly, a seawater storage tank, a booster pump, a membrane assembly and a fresh water storage tank are mounted in the container; the precipitation filtering assembly comprises a box body, a first partition plate is installed in the box body, a second partition plate is installed between the first partition plate and the box wall of the box body, and the first partition plate and the second partition plate divide the inner space of the box body into an aeration box, a filtering box and a sterilization box; ceramsite filter materials are filled in the aeration box, a water distribution assembly and an aeration assembly are installed in the aeration box, an inclined plate filter is installed in the filter box in a supporting mode through a supporting frame, a supporting plate is arranged at the bottom of the disinfection box, a plurality of ultraviolet lamps are installed on the supporting plate, and a first overflow groove is formed in the top of the first partition plate; a conveying pipe is installed at the bottom of the first overflow groove, the lower end of the conveying pipe is communicated with the lower space of the supporting frame in the filter box, a second overflow groove is installed on the second partition plate, and a water outlet is formed in the box wall of the disinfection box. The device disclosed by the utility model can be used for normally desalting a water taking source with high silt content, and is easy to flexibly transfer and use among different construction sites.

Description

Technical Field

[0001] The utility model belongs to the technical field of seawater desalination, in particular to a high-mud content seawater desalination device. Background Art

[0002] In projects such as marine environmental protection construction and dredging construction, water supply becomes one of the important issues due to the remoteness of the project site. Normally, seawater desalination is carried out in temporary construction areas, and seawater is taken nearby. After treatment, it is used as fresh water for domestic use and on-site construction. Unlike the scenario of water desalination for marine vessels, water is usually taken from temporary construction areas in shallow waters near the shore, and there will be some bottom mud in the water source, which means that the mud content of the water source is high, which places higher demands on seawater desalination facilities. On the other hand, the facilities in the temporary construction area are usually temporary facilities. After the construction of the current project is completed, the temporary construction area facilities need to be transferred to the next construction site for use. Therefore, the seawater desalination facilities also need to have the characteristics of flexible transfer.

[0003] Existing seawater desalination facilities are difficult to meet the above requirements and need to be developed and designed. Utility Model Content

[0004] The purpose of the utility model is to provide a high-mud content seawater desalination device, which can perform normal desalination treatment on a high-mud content water source and is easy to be flexibly transferred and used between different construction sites.

[0005] The technical solution adopted by the utility model is: a high-mud content seawater desalination device, including a container, in which a sedimentation and filtration assembly, a seawater storage tank, a booster pump, a membrane assembly and a fresh water storage tank are installed; the sedimentation and filtration assembly includes a box body, a first partition is installed inside the box body, and a second partition is installed between the first partition and the box wall of the box body, the first partition and the second partition divide the internal space of the box body into an aeration box, a filter box and a disinfection box; the aeration box is filled with ceramsite filter material, a water distribution assembly and an aeration assembly are installed in the aeration box, an inclined plate filter is installed in the filter box with a support frame, a support plate is provided at the bottom of the disinfection box and a plurality of ultraviolet lamps are installed on the support plate, a first overflow trough is installed on the top of the first partition, a delivery pipe is installed at the bottom of the first overflow trough, the lower end of the delivery pipe is connected to the lower space of the support frame in the filter box, a second overflow trough is installed on the second partition, and a water outlet is provided on the box wall of the disinfection box.

[0006] Preferably, an inner frame is installed at the lower part of the inner cavity of the aeration box and a perforated plate is laid on the inner frame, and the ceramsite filter material is supported by the perforated plate.

[0007] Preferably, the water distribution assembly includes a water inlet pipe installed on the wall of the aeration box, the lower end of the water inlet pipe extends to the lower space of the frame inside the box and a water distribution pipe is installed at the lower end. The water distribution pipe includes a pipe body sealed at both ends, and a water outlet hole is provided on the top wall of the pipe body.

[0008] Preferably, the aeration assembly includes an air inlet pipe installed on the wall of the aeration box and an aeration pipe installed on the bottom of the box and located in the lower space of the inner frame of the box, and a plurality of disc aerators are installed on the aeration pipe.

[0009] Preferably, a flow stabilizing pipe is installed at the outlet of the second overflow trough, and the flow stabilizing pipe is located at the upper part of the inner cavity of the disinfection box; the flow stabilizing pipe includes a flow stabilizing main pipe and multiple flow stabilizing branches installed on the flow stabilizing main pipe, and a water outlet is provided on the side wall of each flow stabilizing branch pipe.

[0010] Preferably, a drain pipe is provided at the bottom of the side wall of the aeration box, the filter box and the disinfection box. The drain pipe of the aeration box is connected to the lower space of the frame inside the box, the drain pipe of the filter box is connected to the lower space of the support frame, and the drain pipe of the disinfection box is connected to the lower space of the support plate.

[0011] Preferably, the fresh water storage tank includes a first fresh water storage tank and a second fresh water storage tank, the outlet of the first fresh water storage tank is connected to the inlet of the second fresh water storage tank through a pipeline, and the inlet of the first fresh water storage tank is connected to the outlet of the membrane module through a pipeline.

[0012] Preferably, a filter is further included, the outlet of the booster pump is connected to the inlet of the filter through a pipeline, the outlet of the filter is connected to the inlet of the membrane assembly through a pipeline, and a flow meter is installed on the pipeline.

[0013] Preferably, it further comprises a water supply pump and a plurality of metering pumps, the inlet of the water supply pump is connected to the outlet of the first fresh water storage tank through a pipeline, and the inlet of each metering pump is connected to the outlet of the second fresh water storage tank through a pipeline.

[0014] Preferably, it also includes a protective frame, the membrane assembly, the first fresh water storage tank and the second fresh water storage tank, the booster pump and the filter, the water supply pump and the metering pump are all installed inside the protective frame, the seawater storage tank is located between the sedimentation and filtration assembly and the protective frame, and the side is fixedly connected to the protective frame.

[0015] The advantages and positive effects of the utility model are:

[0016] The present invention provides a high-mud content seawater desalination device, which installs a sedimentation and filtration component and a reverse osmosis component in a container, thereby forming a complete set of equipment that is easy to flexibly transfer and use between different construction sites. The sedimentation and filtration component has an aeration box, a filter box, and a disinfection box. In the aeration box, seawater with a high mud content enters the aeration box for aeration and filtration treatment, and then enters the filter box for secondary filtration treatment. The two-stage filtration can effectively reduce the mud content in the water source. The water source entering the disinfection box is disinfected by microorganisms, further achieving the purification of the water source and creating favorable conditions for subsequent reverse osmosis desalination treatment. Therefore, the seawater desalination device of the present invention can perform normal desalination treatment on water sources with a high mud content, ensuring a stable freshwater supply in the temporary construction area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the external three-dimensional structure of the sedimentation filtration component;

[0019] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the sedimentation filtration component;

[0020] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the reverse osmosis component.

[0021] In the picture:

[0022] 1. Sedimentation and filtration assembly; 1-1. Box body; 1-2. Drain pipe; 1-3. Water inlet pipe; 1-4. First overflow trough; 1-5. Air inlet pipe; 1-6. First baffle; 1-7. Flow stabilizing pipe; 1-8. Second baffle; 1-9. Second overflow trough; 1-10. Box inner frame; 1-11. Water distribution pipe; 1-12. Disc aerator; 1-13. Inclined plate filter; 1-14. Ultraviolet lamp; 1-15. Support plate; 1-16. Support frame; 1-17. Third overflow trough; 2. Seawater storage tank; 3. Membrane assembly; 4. First fresh water storage tank; 5. Second fresh water storage tank; 6. Booster pump; 7. Filter; 8. Protective frame; 9. Water supply pump; 10. Metering pump; 11. Container. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given to illustrate in detail.

[0024] See Figure 1The high-mud content seawater desalination device of the present invention includes a container 11, in which a sedimentation filtration component 1 and a reverse osmosis component are installed. The reverse osmosis component includes a seawater storage tank 2, a booster pump 6, a membrane component 3 and a fresh water storage tank. By installing the sedimentation filtration component 1 and the reverse osmosis component in one container 11, a complete set of equipment is formed, and the seawater desalination device can be flexibly and quickly transferred between different project sites using engineering vehicles. Among them, the sedimentation filtration component 1 is used to pre-treat the extracted seawater to remove the mud components contained therein, the seawater storage tank 2 is used to temporarily store the seawater obtained by the pre-treatment, the booster pump 6 is used to provide flow power for the seawater and ensure the water pressure of the membrane component 3, and the fresh water storage tank is used to store fresh water.

[0025] See Figure 2 and Figure 3 , we can see that:

[0026] Sedimentation and filtration assembly 1 includes a housing 1-1, with a first partition 1-6 mounted within the housing 1-1. A second partition 1-8 is mounted between the first partition 1-6 and the wall of the housing 1-1. The first and second partitions 1-6 and 1-8 divide the interior of the housing 1-1 into an aeration chamber, a filtration chamber, and a disinfection chamber, through which seawater flows sequentially. As shown in the figure, the aeration chamber, filtration chamber, and disinfection chamber are arranged in a "product" shape, with the filtration chamber and disinfection chamber having approximately equal volumes, and the aeration chamber having significantly greater volumes than the filtration chamber and disinfection chamber.

[0027] The aeration box is filled with ceramsite filter material, and a water distribution component and an aeration component are installed in the aeration box. The water distribution component is used to transport the extracted high-mud content seawater into the box and distribute the seawater. The aeration component is used to aerate the seawater to meet the oxygen requirement of aerobic microorganisms and stir the muddy seawater in the box. The ceramsite filter material performs initial filtration on the seawater to remove most of the mud components it contains.

[0028] In this embodiment, an inner frame 1-10 is installed at the lower part of the inner cavity of the aeration box and a perforated plate is laid on the inner frame 1-10. The ceramsite filter material is supported by the perforated plate. In this way, a water distribution and aeration space is formed below the inner frame 1-10, and the ceramsite filter material is located above this water distribution and aeration space.

[0029] In this embodiment, the water distribution assembly includes an inlet pipe 1-3 mounted on the wall of the aeration tank. The lower end of the inlet pipe 1-3 extends to the lower space of the internal frame 1-10 of the tank. A water distribution pipe 1-11 is mounted at the lower end. The water distribution pipe 1-11 comprises a tube body sealed at both ends, with an outlet hole provided on the top wall. Muddy seawater, fed into the inlet pipe 1-3 by an external water pump, reaches the water distribution pipe 1-11 and is discharged through the outlet hole of the water distribution pipe 1-11 into the lower space of the internal frame 1-10.

[0030] In this embodiment, the aeration assembly includes an air inlet pipe 1-5 installed on the wall of the aeration box and an aeration pipe installed on the bottom of the box and located in the lower space of the box inner frame 1-10. A plurality of disc aerators 1-12 are installed on the aeration pipe.

[0031] The muddy seawater entering the lower space of the inner frame 1-10 passes upward through the ceramsite filter material. During this process, high-pressure air is delivered to the aeration pipe and the disc aerator 1-12 through the air inlet pipe 1-5. The air bubbles discharged from the disc aerator 1-12 mix with the muddy seawater and pass upward through the ceramsite filter material area under the action of buoyancy, thereby achieving the aeration effect.

[0032] Inside the filter box, a slanted plate filter 1-13 is supported by a support frame 1-16. A support plate 1-15 is provided at the bottom of the disinfection box, and multiple ultraviolet lamps 1-14 are mounted on the support plate 1-15. The slanted plate filter 1-13 performs secondary filtration on the seawater, further removing any remaining mud and other particulate matter. The clarified seawater then enters the disinfection box, where the ultraviolet lamps 1-14 generate ultraviolet light to disinfect microorganisms in the seawater.

[0033] A first overflow trough 1-4 is installed on the top of the first partition 1-6, and a delivery pipe is installed at the bottom of the first overflow trough 1-4. The lower end of the delivery pipe is connected to the lower space of the support frame 1-16 in the filter box. A second overflow trough 1-9 is installed on the second partition 1-8, and a water outlet is provided on the wall of the disinfection box. The surface seawater in the aeration box enters the first overflow trough 1-4 and is transported downward to the bottom of the inner cavity of the filter box through the delivery pipe. The seawater in the filter box passes upward through the inclined plate filter 1-13 to obtain a second filtration effect. After that, the surface seawater in the filter box enters the second overflow trough 1-9 and is then discharged into the disinfection box through the outlet of the second overflow trough 1-9. The surface seawater in the disinfection box is discharged through the water outlet, which is connected to the water inlet of the seawater storage tank 2 through a pipeline.

[0034] In this embodiment, a third overflow trough 1-17 is installed on the wall of the disinfection box, and the water outlet is connected to the third overflow trough 1-17.

[0035] In this embodiment, a flow stabilizing pipe 1-7 is installed at the outlet of the second overflow trough 1-9. The flow stabilizing pipe 1-7 is located in the upper portion of the inner cavity of the disinfection box. The flow stabilizing pipe 1-7 includes a main flow stabilizing pipe and multiple branch flow stabilizing pipes installed on the main flow stabilizing pipe. Each branch flow stabilizing pipe has a water outlet hole on its side wall. The purpose of the flow stabilizing pipe 1-7 is to ensure that the seawater discharged into the disinfection box through the second overflow trough 1-9 enters the disinfection box in a stable manner, avoiding excessive disturbance of the seawater in the disinfection box and ensuring the effectiveness of ultraviolet disinfection.

[0036] In this embodiment, a drainage pipe 1-2 is provided at the bottom of each side wall of the aeration box, the filtration box, and the disinfection box. The drainage pipe 1-2 of the aeration box is connected to the lower space of the frame 1-10 inside the box, the drainage pipe 1-2 of the filtration box is connected to the lower space of the support frame 1-16, and the drainage pipe 1-2 of the disinfection box is connected to the lower space of the support plate 1-15. The drainage pipe 1-2 at each location is opened regularly to discharge the sewage at the bottom of the box.

[0037] See Figure 4 , we can see that:

[0038] The fresh water storage tanks include a first fresh water storage tank 4 and a second fresh water storage tank 5. The outlet of the first fresh water storage tank 4 is connected to the inlet of the second fresh water storage tank 5 via a pipeline, and the inlet of the first fresh water storage tank 4 is connected to the outlet of the membrane module 3 via a pipeline. Therefore, the first fresh water storage tank 4 and the second fresh water storage tank 5 are connected in series. When the first fresh water storage tank 4 is full of fresh water, the fresh water in the tank is transferred to the second fresh water storage tank 5.

[0039] The connection relationship of the reverse osmosis components is: the inlet of the booster pump 6 is connected to the outlet of the seawater storage tank 2 through a pipeline, the outlet of the booster pump 6 is connected to the inlet of the membrane assembly 3 through a pipeline, the outlet of the membrane assembly 3 is connected to the first fresh water storage tank 4 through a pipeline, and the outlet of the first fresh water storage tank 4 is connected to the inlet of the second fresh water storage tank 5 through a pipeline.

[0040] In this embodiment, a filter 7 is also included. The outlet of the booster pump 6 is connected to the inlet of the filter 7 via a pipeline. The outlet of the filter 7 is also connected to the inlet of the membrane assembly 3 via a pipeline, and a flow meter is installed on this pipeline. The filter 7 is provided to provide a final filtration of the seawater entering the membrane assembly 3. The seawater has now undergone a three-stage filtration. The filter 7 further removes particulate matter from the seawater to prevent clogging of the reverse osmosis membrane of the membrane assembly 3. The flow meter is provided to measure the amount of seawater processed.

[0041] This embodiment also includes a water supply pump 9 and multiple metering pumps 10. The inlet of the water supply pump 9 is connected to the outlet of the first freshwater storage tank 4 via a pipeline, and the inlet of each metering pump 10 is connected to the outlet of the second freshwater storage tank 5 via a pipeline. The water supply pump 9 and the multiple metering pumps 10 provide multiple water supply ports for the water facilities in the temporary construction area. Under normal circumstances, the water supply pump 9 can be used to stably supply fresh water from the first freshwater storage tank 4 to the living area, and the multiple metering pumps 10 can be used to quantitatively deliver fresh water from the second freshwater storage tank 5 to the construction site. The metering pumps 10 can also count the amount of fresh water delivered to each production link.

[0042] In this embodiment, the protective frame 8 is also included, the membrane assembly 3, the first fresh water tank 4 and the second fresh water tank 5, the booster pump 6 and the filter 7, the water supply pump 9 and the metering pump 10 and the auxiliary pipeline are all installed inside the protective frame 8 to achieve the purpose of protection, the seawater tank 2 is located between the sedimentation and filtration assembly 1 and the protective frame 8 and is fixedly connected with the protective frame 8 at the side, so that the protective frame 8 also improves the stability of the seawater tank 2.

[0043] The bottom of the protective frame 8, the seawater tank 2 and the tank body 1-1 of the sedimentation and filtration assembly 1 can be directly fixed on the bottom wall of the container 11 to ensure the stability of installation.

[0044] Operation mode:

[0045] The muddy seawater is pumped into the water inlet pipe 1-3, is uniformly distributed on the bottom of the tank by the water distribution pipe 1-11, is subjected to aeration by the aeration assembly and is subjected to primary filtration by the ceramsite filter material; the overflow seawater enters the filtration tank, is subjected to secondary filtration when passing through the inclined plate filter 1-13 upwards, is subjected to ultraviolet disinfection in the disinfection tank, and finally the clarified seawater is discharged from the sedimentation and filtration assembly 1 and enters the seawater tank 2;

[0046] The booster pump 6 pumps out seawater in a pressurized manner, the seawater is subjected to tertiary filtration when passing through the filter 7, then enters the membrane assembly 3, the formed fresh water is transported to the first fresh water tank 4 and the second fresh water tank 5, and the fresh water is taken by the water supply pump 9 and the metering pump 10.

Claims

1. A high mud content seawater desalination device, characterized by: The invention comprises a container (11), wherein a sedimentation filtration assembly (1), a seawater storage tank (2), a booster pump (6), a membrane assembly (3) and a freshwater storage tank are installed in the container (11); the sedimentation filtration assembly (1) comprises a box body (1-1), a first partition (1-6) is installed inside the box body (1-1), a second partition (1-8) is installed between the first partition (1-6) and the box wall of the box body (1-1), and the first partition (1-6) and the second partition (1-8) divide the internal space of the box body (1-1) into an aeration box, a filtration box and a disinfection box; the aeration box is filled with ceramsite filter material, and a membrane assembly (3) is installed in the aeration box. A water distribution component and an aeration component are provided. A support frame (1-16) is used to support and install an inclined plate filter (1-13) in a filter box. A support plate (1-15) is provided at the bottom of the disinfection box and a plurality of ultraviolet lamps (1-14) are installed on the support plate (1-15). A first overflow trough (1-4) is installed on the top of a first partition (1-6). A delivery pipe is installed at the bottom of the first overflow trough (1-4). The lower end of the delivery pipe is connected to the lower space of the support frame (1-16) in the filter box. A second overflow trough (1-9) is installed on the second partition (1-8). A water outlet is provided on the wall of the disinfection box.

2. The high-mud content seawater desalination device according to claim 1, characterized in that: An inner frame (1-10) is installed at the lower part of the inner cavity of the aeration box, and a perforated plate is laid on the inner frame (1-10), and the ceramsite filter material is supported by the perforated plate.

3. The high-mud content seawater desalination device according to claim 2, characterized in that: The water distribution assembly comprises a water inlet pipe (1-3) installed on the wall of the aeration box, the lower end of the water inlet pipe (1-3) extends to the lower space of the frame (1-10) inside the box and a water distribution pipe (1-11) is installed at the lower end, and the water distribution pipe (1-11) comprises a pipe body with sealed ends, and a water outlet hole is provided on the top wall of the pipe body.

4. The high-mud content seawater desalination device according to claim 3, characterized in that: The aeration assembly comprises an air inlet pipe (1-5) installed on the wall of the aeration box and an aeration pipe installed on the bottom of the box and located in the lower space of the box inner frame (1-10). A plurality of disc aerators (1-12) are installed on the aeration pipe.

5. The high mud content seawater desalination device according to claim 4, characterized in that: A flow stabilizing pipe (1-7) is installed at the outlet of the second overflow trough (1-9), and the flow stabilizing pipe (1-7) is located at the upper part of the inner cavity of the disinfection box; the flow stabilizing pipe (1-7) includes a flow stabilizing main pipe and a plurality of flow stabilizing branch pipes installed on the flow stabilizing main pipe, and a water outlet hole is provided on the side wall of each flow stabilizing branch pipe.

6. The high mud content seawater desalination device according to claim 5, characterized in that: The aeration box, the filter box and the disinfection box are each provided with a sewage pipe (1-2) at the bottom of the side wall. The sewage pipe (1-2) of the aeration box is connected to the lower space of the frame (1-10) inside the box, the sewage pipe (1-2) of the filter box is connected to the lower space of the support frame (1-16), and the sewage pipe (1-2) of the disinfection box is connected to the lower space of the support plate (1-15).

7. The high-mud content seawater desalination device according to claim 1, characterized in that: The fresh water storage tank comprises a first fresh water storage tank (4) and a second fresh water storage tank (5), the outlet of the first fresh water storage tank (4) is connected to the inlet of the second fresh water storage tank (5) through a pipeline, and the inlet of the first fresh water storage tank (4) is connected to the outlet of the membrane assembly (3) through a pipeline.

8. The high-mud content seawater desalination device according to claim 7, characterized in that: Also includes The outlet of the filter (7) and the booster pump (6) are connected to the inlet of the filter (7) through a pipeline, and the outlet of the filter (7) is connected to the inlet of the membrane assembly (3) through a pipeline, and a flow meter is installed on the pipeline.

9. The high-mud content seawater desalination device according to claim 8, characterized in that: It also includes a water supply pump (9) and a plurality of metering pumps (10). The inlet of the water supply pump (9) is connected to the outlet of the first fresh water storage tank (4) through a pipeline, and the inlet of each metering pump (10) is connected to the outlet of the second fresh water storage tank (5) through a pipeline.

10. The high-mud content seawater desalination device according to claim 9, characterized in that: The invention also includes a protective frame (8), wherein the membrane assembly (3), the first fresh water storage tank (4), the second fresh water storage tank (5), the booster pump (6), the filter (7), the water supply pump (9) and the metering pump (10) are all installed inside the protective frame (8), and the seawater storage tank (2) is located between the sedimentation and filtration assembly (1) and the protective frame (8), and the side portion is fixedly connected to the protective frame (8).

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