Shipborne seawater desalination pretreatment device
By adopting a four-layer filter structure and a self-cleaning device in the seawater desalination pretreatment device, the problem of poor effect of removing heavy metals and bacteria in the existing devices is solved, and efficient seawater pretreatment effect is achieved and equipment life is extended.
Patent Information
- Application Number
- CN202421907245.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing seawater desalination pretreatment devices are poor in removing heavy metal ions and organic bacteria, resulting in scaling and congestion of back-end equipment and affecting the life of the equipment.
A four-layer filter structure is adopted, including a chemical layer and a quartz sand layer of different particle sizes, combined with a self-cleaning device to achieve efficient removal of heavy metals and bacteria.
Effectively remove impurities and heavy metal particles in sewage, improve the quality of the water, extend the service life of the equipment, and reduce scaling and congestion.
Smart Images
Figure CN223134280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a seawater treatment device, in particular to a shipborne seawater desalination pretreatment device. Background Art
[0002] When a ship sails on the sea, a large amount of fresh water is required for drinking, cleaning, ship operation and mechanical cooling. Fresh water is a very important resource on the ship during a long voyage. An economical, practical and efficient seawater desalination treatment device is a necessary equipment for ocean-going ships. Seawater desalination is generally divided into pretreatment and desalination treatment. Seawater desalination can effectively remove harmful components such as inorganic salts, heavy metal ions, organic bacteria and germs in seawater, and the desalinated seawater is used to solve the water for crew washing and mechanical equipment. Whether an ocean-going ship uses the distillation method or the reverse osmosis method to produce fresh water, the seawater needs to be pretreated before entering the treatment system. The pretreatment device can improve the water quality of the effluent at the pretreatment end, improve the operation efficiency of the backend equipment, reduce the scaling and fouling of the backend equipment, and extend the service life of the equipment.
[0003] At present, most of the seawater desalination pretreatment devices used in the industry are treated by sand filtration and self-cleaning devices. The treatment effect of this kind of device is poor, especially the treatment of heavy metal ions and organic bacteria is not clean. Therefore, it is very beneficial to invent a shipborne seawater desalination pretreatment device. Summary of the Utility Model
[0004] The purpose of the utility model is to propose a shipborne seawater desalination pretreatment device aiming at the defects of the existing seawater pretreatment device, which can efficiently remove suspended solids and heavy metal ions in water.
[0005] To achieve the above object, it includes a horizontal filter (1) and a self-cleaning device (2). The horizontal filter (1) is provided with a water inlet (3) at the top and a water outlet (4) at the bottom. The bottom water outlet (4) of the horizontal filter (1) is connected to the water inlet of the self-cleaning device (2) through a pipeline. It is characterized in that: there are four filter layers in the horizontal filter (1). The first layer is a medicine layer (5), and the particle diameter of the medicine is 0.8-1.2 mm. The medicine is preferably self-polarized biochemical particle packing; the second layer (6), the third layer (7) and the fourth layer (8) are respectively quartz sand particles, and their particle diameters are 0.4-0.6 mm, 1-2 mm, and 2-4 mm respectively; a water inlet distribution pipe (9) is provided at the top inside the horizontal filter (1), and a water spraying pipe (10) is provided at the bottom of the fourth layer of quartz sand particles (8); a backwashing water inlet pipe (11) is installed at the bottom water outlet (4) of the horizontal filter (1), and a backwashing water drain port (12) is installed at the top water inlet (3). The height of the first medicine layer (5) is 400 mm, and the heights of the second layer (6), the third layer (7) and the fourth layer (8) of the quartz sand particle layer are 500 mm, 200 mm and 100 mm respectively. With this structure, a good filtering effect can be achieved, and the filtering resistance can be reduced.
[0006] The utility model can effectively remove impurities, adsorbed oil, suspended or colloidal impurities in sewage, and can effectively remove heavy metal particles and bacteria at the same time, and is very suitable for shipborne seawater desalination pretreatment devices. Description of the Drawings
[0007] Figure 1 is a structural schematic diagram of the utility model
[0008] Figure 2 is a structural schematic diagram of the horizontal filter of the utility model Detailed Embodiments
[0009] The following will further describe the utility model in combination with embodiments.
[0010] Referring to Figure 1-2 , the utility model includes a horizontal filter (1) and a self-cleaning device (2). The horizontal filter (1) is provided with a water inlet (3) at the top and a water outlet (4) at the bottom. The bottom water outlet (4) of the horizontal filter (1) is connected to the water inlet of the self-cleaning device (2) through a pipeline. There are four filter layers in the horizontal filter (1). The first layer is a medicine layer (5), and the particle diameter of the medicine is 0.8-1.2 mm. The medicine is self-polarized biochemical particle packing;
[0011] The second layer (6), the third layer (7) and the fourth layer (8) are quartz sand particles respectively, and their particle diameters are 0.4 - 0.6 mm, 1 - 2 mm, and 2 - 4 mm respectively; an inlet water distribution pipe (9) is provided at the inner top of the horizontal filter (1), and a water spraying pipe (10) is provided at the bottom of the fourth layer of quartz sand particles (8); a backwashing inlet pipe (11) is installed at the bottom water outlet (4) of the horizontal filter (1), and a backwashing drain outlet (12) is installed at the top water inlet (3). The height of the first layer of chemical agent layer (5) is 400 mm, and the heights of the second layer (6), the third layer (7) and the fourth layer (8) of the quartz sand particle layer are 500 mm, 200 mm and 100 mm respectively. With this structure, a good filtering effect can be achieved, and the filtering resistance can be reduced.
[0012] During operation, seawater enters the inlet water distribution pipe (9) from the water inlet (3), and the inlet water distribution pipe (9) evenly distributes it into the horizontal filter (1). First, heavy metal particles, organic impurities and bacteria are removed by the self-polarized biochemical particle filler, then it passes through the three-layer quartz sand particle filter layer to filter out particulate impurities and dirt, and then it is transported to the self-cleaning device (2) for re-cleaning to complete the pretreatment process. Through the pretreatment of this utility model, the water quality of the effluent at the pretreatment end can be improved, the operation efficiency of the backend equipment can be increased, the scaling and fouling of the backend equipment can be reduced, and the service life of the equipment can be extended.
Claims
1. A shipborne seawater desalination pretreatment device, which comprises a horizontal filter (1) and a self-cleaning device (2). The top of the horizontal filter (1) is provided with a water inlet (3), and the bottom is provided with a water outlet (4). The bottom water outlet (4) of the horizontal filter (1) is connected to the water inlet of the self-cleaning device (2) through a pipeline. It is characterized in that: The horizontal filter (1) is provided with four filter layers inside. The first layer is the chemical agent layer (5), and the particle diameter of the chemical agent is 0.8 - 1.2 mm. The second layer (6), the third layer (7) and the fourth layer (8) are respectively quartz sand particles, and their particle diameters are 0.4 - 0.6 mm, 1 - 2 mm, and 2 - 4 mm respectively. An inlet water distribution pipe (9) is provided at the inner top of the horizontal filter (1), and a water spraying pipe (10) is provided at the bottom of the fourth layer (8) of quartz sand particles.
2. The on-board seawater desalination pretreatment device according to claim 1, characterized in that: A backwash inlet pipe (11) is installed at the bottom water outlet (4) of the horizontal filter (1), and a backwash drain outlet (12) is installed at the top water inlet (3).
3. The shipborne seawater desalination pretreatment device according to claim 1, characterized in that: The height of the chemical agent layer (5) is 400 mm, and the heights of the second layer (6), the third layer (7) and the fourth layer (8) of the quartz sand particle layer are 500 mm, 200 mm and 100 mm respectively.