Purification device

Abstract

Regarding the removal of harmful components from a liquid to be treated, this purification device provides a system that rapidly processes suspended and dissolved substances in the liquid in the same treatment tank, and allows for easy replacement of the adsorbent material that has adsorbed the dissolved substances. [Solution] The system filters suspended solids using a filter media layer made of amorphous fiber filter media with microscopic voids inside, and adsorbs dissolved substances using an adsorbent layer made of an adsorbent cartridge comprising an adsorbent containing an antibacterial agent in an amorphous fiber carrier with microscopic voids inside, a housing having multiple water perforations smaller than the adsorbent, and a detachable part that can be detachably fixed to the treatment tank. This enables high-speed processing of the liquid to be treated while allowing for easy replacement of the adsorbent that has adsorbed the dissolved substances.

Description

Technical Field

[0001] The present invention relates to the removal of harmful components from a liquid to be treated, and particularly to a purification device that filters fine contaminants in the liquid to be treated and adsorbs and removes dissolved substances using the same treatment device.

Background Art

[0002] Surface water such as rivers and lakes, and infiltrated water such as groundwater and well water may contain many harmful components and impurities. In order to purify such water, large-scale purification facilities and high costs are required. Therefore, there is a need for simple devices and equipment that can reliably remove the harmful components and impurities contained in these waters.

[0003] Patent Document 1 discloses a filtration device that includes a separation chamber, a filtration chamber, and an adsorption chamber in the same cylindrical body, and continuously removes fine suspended matter in the liquid to be treated and adsorbs and removes color components and odors.

[0004] Further, Patent Document 2 discloses a purifier that includes a filtration membrane module for removing impurities such as bacteria and dust inside the main body, and filter media (ion exchangers, antibacterial adsorbents) for decomposing residual chlorine and adsorbing organic substances.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Harmful components and impurities found in surface water and seepage water include iron, manganese, arsenic, nitrates, calcium, and magnesium. Excessive intake of any of these can potentially cause health problems. While ammonia in groundwater can be removed by neutralization with chlorine, controlling the amount of chlorine added is difficult, requiring advanced technology to properly neutralize ammonia. Even if ammonia or chlorine remains after treatment, it can cause other harm to the body, such as allergic reactions. Therefore, technology is needed to easily and reliably remove ammonia using methods other than chlorine. Furthermore, since areas with high concentrations of the aforementioned harmful components and impurities in groundwater are scattered over a wide area, it is also necessary to be able to easily transport and install water purification systems capable of properly treating groundwater and other treated waters where needed.

[0007] The filtration device described in Patent Document 1 involves removing and replacing the filter media and adsorbent material from outlets located on the side of a cylindrical body, but this requires the use of a special scraping tool, making replacement time-consuming.

[0008] The purifier described in Patent Document 2 requires the disassembly of the treatment tank when replacing the filter media and adsorbent material. While this is applicable to small treatment tanks made of lightweight materials, it is difficult to apply to medium-sized and large treatment tanks made of heavy materials such as metal.

[0009] The present invention relates to a purification device that enables high-speed treatment of suspended and dissolved substances in a liquid to be treated in the same treatment tank, and has excellent maintainability due to the easy replacement of the adsorbent material that has adsorbed the dissolved substances. [Means for solving the problem]

[0010] The present invention relates to a purification device in which a filter media layer for filtering fine impurities in a liquid to be treated and an adsorption layer for adsorbing and removing harmful components in a liquid to be treated are superimposed inside a treatment tank. The filter media layer is composed of an amorphous filter media with fixed fibers and minute voids inside, and the adsorption layer comprises an adsorbent containing an antibacterial agent on an amorphous carrier with fixed fibers and minute voids inside, a housing having multiple water passages smaller than the adsorbent, and a detachable part that is detachably fixed to the treatment tank. By configuring the adsorbent cartridge to be detachable from the outside of the treatment tank, high-capacity, high-speed processing becomes possible, and the regeneration of the filter media and replacement of the adsorbent are made easy, improving maintainability.

[0011] Furthermore, if the adsorbent cartridge is detachably attached to the opening lid of the treatment tank, the adsorbent cartridge can be easily removed from outside the treatment tank, making it easy to replace the adsorbent. [Effects of the Invention]

[0012] This invention enables high-capacity, high-speed processing because it uses fiber carriers for both the filter media and the adsorbent. Since the filter media layer and the adsorbent layer are installed in the same tank, it is easy to transport and saves space. Because the adsorbent layer is formed using an adsorbent cartridge filled with adsorbent, the adsorbent can be easily replaced from outside the processing tank by removing the adsorbent cartridge. [Brief explanation of the drawing]

[0013] [Figure 1] This is a longitudinal cross-sectional view of the purification device according to the present invention. [Figure 2] This is also a perspective view of the filter media. [Figure 3] Similarly, this is a perspective view of the adsorbent material. [Figure 4] Similarly, this is a plan view of the adsorbent cartridge. [Figure 5] This is a longitudinal cross-sectional view of a purification device in another embodiment. [Modes for carrying out the invention]

[0014] Figure 1 is a longitudinal sectional view of the purification device according to the present invention. The purification device 1 has a cylindrical treatment tank 2 erected vertically, filled with amorphous filter media 3 inside, and a filter media layer 5 is formed on the outflow prevention screen 4 below the treatment tank. The liquid to be treated supplied from the upper supply pipe 7 connected to the liquid to be treated supply path 6 passes downward inside the treatment tank 2, and suspended substances are captured by the filter media layer 5.

[0015] The treatment tank is provided with cleaning means for cleaning and regenerating the filter media. A cleaning pipe 9 connected to the cleaning fluid supply path 8 extends inside the treatment tank 2 below the filter media layer 5. By injecting the cleaning fluid from the cleaning pipe 9 to stir and clean the filter media layer 5, the impurities captured by the filter media 3 are separated from the filter media 3 to eliminate clogging of the filter media 3.

[0016] An adsorption layer 10 is provided below the filter media layer 5. As shown in FIG. 4, the adsorption layer 10 is composed of an adsorption material cartridge 11. The adsorption material cartridge 11 includes an adsorption material 12 in which an antibacterial agent is contained in an amorphous carrier, a storage body 14 having a plurality of water passing holes 13 smaller than the adsorption material 12, and a detachable part 15 for detachably fixing to the treatment tank 2.

[0017] When the liquid component in the liquid to be treated that has passed through the filter media layer 5 and flowed downward passes through the adsorption material cartridge 11, harmful components and impurities dissolved in the liquid to be treated are adsorbed by the adsorption material 12. The treated liquid from which fine impurities and dissolved substances have been removed by the filter media layer 5 and the adsorption layer 10 is discharged to the outside from the treated liquid discharge path 16 connected below the treatment tank 2.

[0018] When the liquid to be treated is passing through the treatment tank 2 from the supply side to the discharge side, it is necessary to contact the filter media layer 5 and the adsorption layer 10. Each layer is formed while appropriately considering the contact efficiency and the water passing efficiency according to the removal components and the treatment amount of the liquid to be treated.

[0019] Figure 2 is a perspective view of the filter media according to the present invention. In this embodiment, the filter medium 3 is composed of fibers (such as filaments or staple fibers) spun from a wavy synthetic resin, and the fibers are welded to each other to form a fibrous filter medium 3 having minute voids inside. Since the treated liquid can pass through the internal voids of the filter medium 3 together with suspended substances, high-speed filtration can be performed. The space between the fibers inside the filter medium 3 is densely structured, and suspended substances can be captured between the fibers inside the filter medium 3. Since fibers stand up on the surface of the filter medium 3, it is also possible to capture suspended substances passing through the gaps between the filter media 3, 3 on the surface of the filter medium 3. Further, when forming the filter medium layer 5 and passing the treated liquid, since the fibrous filter medium 3 having voids inside is appropriately compressed and filled, the gaps between the filter media 3, 3 can be kept uniform, and efficient filtration can be performed.

[0020] FIG. 2a shows an amorphous rectangular fibrous filter medium 3a, which can be formed into a rectangular shape by cutting it from a large mat-like medium into a shaped product. Since the filter medium 3 is composed of fibers, suspended substances can be captured by the standing fibers on the surface of the rectangular fibrous filter medium 3a or between the fibers inside the rectangular filter medium 3a. When the rectangular fibrous filter medium 3a is filled in a treatment tank to form a filter medium layer 5a, gaps of different sizes are formed between the filter media 3a, 3a, and while capturing suspended substances, the treated liquid is passed into the filter medium layer 5a.

[0021] FIG. 2b shows an amorphous spherical fibrous filter medium 3b, in which the filter medium 3 is formed into a spherical shape. Similar to the rectangular fibrous filter medium 3a, since it is composed of fibers, suspended substances can be captured by the standing fibers on the surface of the spherical fibrous filter medium 3b or between the fibers inside the spherical fibrous filter medium 3b.

[0022] FIG. 2c shows an amorphous mall-shaped fibrous filter medium 3c, in which the filter medium 3 is formed into a mall shape. Similar to the rectangular fibrous filter medium 3a, since it is composed of fibers, suspended substances can be captured by the standing fibers on the surface of the mall-shaped fibrous filter medium 3c or between the fibers inside the mall-shaped fibrous filter medium 3c.

[0023] Figure 2d shows an irregularly shaped tubular fiber filter media 3d, in which the filter media 3 is formed into a tubular shape. Similar to the rectangular fiber filter media 3a, it is composed of fibers, so suspended substances can be captured between the bristles on the surface of the tubular fiber filter media 3d or between the fibers inside the tubular fiber filter media 3d.

[0024] In this embodiment, a filter media 3 with a specific gravity of 1.0 or higher is used to form a sedimentation filter media layer 5 in the treatment tank 2, and treatment is performed with a downward flow. Depending on the liquid to be treated, a filter media 3 with a specific gravity less than 1.0 may be used to form a floating filter media layer 5 in the treatment tank 2, and treatment may be performed with an upward flow.

[0025] Figure 3 is a perspective view of the adsorbent according to the present invention. In this embodiment, similar to the filter media 3 shown in Figure 2, the adsorbent 12 is composed of a fiber carrier that is welded together with fibers (e.g., filaments or spun fibers) spun from a wave-shaped synthetic resin, and has minute voids inside.

[0026] The fiber fragments constituting the fiber carrier contain an antibacterial agent, and known techniques such as using synthetic resin fibers impregnated with an antibacterial agent, or coating the surface of the generated synthetic resin fibers with an antibacterial agent, can be selected.

[0027] Antibacterial agents have the effect of adsorbing harmful substances dissolved in the treated liquid. They can be appropriately selected depending on the harmful substance to be adsorbed, such as those that perform physical adsorption by activated carbon with many pores, or those that perform equilibrium reactions through ion exchange.

[0028] A fiber carrier containing an antibacterial agent is used as the adsorbent 12, and since the liquid to be treated containing dissolved harmful substances can pass through the internal voids of the adsorbent 12, high-speed processing is possible. The spaces between the fibers inside the adsorbent 12 are densely arranged, allowing dissolved substances to be adsorbed between the fibers inside the adsorbent 12. Since the fibers are raised on the surface of the adsorbent 12, dissolved substances passing through the gaps between the adsorbent 12 can also be adsorbed on the surface of the adsorbent 12. Furthermore, when the adsorption layer 10 is formed and the liquid to be treated is passed through, the fiber adsorbent 12, which has internal voids, is appropriately compressed and filled, so the gaps between the adsorbent 12 can be kept uniform, and adsorption can be performed efficiently.

[0029] Figure 4 is a plan view of the adsorbent cartridge according to the present invention. The adsorbent cartridge 11 is formed by filling a housing 14 with adsorbent material 12 to create an adsorption layer 10. In this embodiment, the housing 14 is a cylindrical housing with one end closed. The housing 14 needs to allow the liquid to be treated to pass through its interior, drain the treated water to the outside, and prevent the adsorbent material 12 filling the interior from leaking out. Therefore, it has water passages smaller than the adsorbent material 12. Providing water passages 13 across the entire surface of the housing 14 allows a large amount of treated water to pass uniformly through the housing 14, resulting in good treatment efficiency. The housing 14 satisfies the above functions and can be appropriately selected from known materials such as perforated metal, mesh, or cloth, depending on the substance to be adsorbed from the liquid to be treated and the treatment process.

[0030] The adsorbent cartridge 11 can be easily removed from outside the processing tank 2. In this embodiment, an opening is formed in the processing tank 2 for inserting and removing the adsorbent cartridge 11. Inside the opening lid 17 that seals the opening with water, a detachable part 15 is provided in the storage part 14 for detachably fixing the adsorbent cartridge 11 by known means. The detachable part 15 can use known connecting means such as a screw-in type or a clip-type.

[0031] Furthermore, the number and shape of the adsorbent cartridges 11 can be appropriately selected according to the shape, flow velocity, and flow direction of the treatment tank 2. [Examples]

[0032] (Concentrated solution supply ~ filtration) The liquid to be treated is supplied to the purification device 1. A supply pipe 7 connected to the liquid to be treated supply passage 6 extends into the treatment tank 2, and the liquid is supplied evenly from multiple nozzles provided in the supply pipe 7. The liquid to be treated moves downward through the treatment tank 2, and suspended solids in the liquid are captured by the filter media layer 5. The liquid to be treated, from which the suspended solids have been captured, flows downward through the filter media layer 5 and the outflow prevention screen 4.

[0033] In this embodiment, in order to efficiently capture suspended solids in the liquid to be treated, the filter media layer 5 is formed over the entire cross-section of the treatment tank 2, with the necessary height secured on the spillage prevention screen 4. The configuration ensures that the liquid to be treated supplied from the nozzle above makes reliable contact with the filter media layer 5.

[0034] The water to be treated, having passed through the filter layer 5, comes into contact with the adsorption layer 10 installed below the treatment tank 2. It flows into the interior through the water passage 13 located above the housing 14 of the adsorbent cartridge 11, comes into contact with the adsorbent 12, and flows out through the water passage 13 located below. When the liquid to be treated comes into contact with the adsorbent 12, the antibacterial agent contained in the adsorbent 12 adsorbs specific components dissolved in the liquid to be treated. The treated liquid, from which fine impurities and harmful components have been removed, is discharged to the outside through the treated liquid discharge passage 16 connected to the bottom of the treatment tank 2.

[0035] In this embodiment, in order to efficiently adsorb dissolved substances in the liquid to be treated, multiple adsorbent cartridges 11 are arranged radially at equal angles from the outer circumference of the treatment tank 2 toward the center. A guide cone 18 is installed in the center, and fan-shaped inflow prevention covers 19 are installed between adjacent adsorbent cartridges 11, so that the water to be treated that has passed through the filter media layer 5 comes into reliable contact with the adsorption layer 10.

[0036] The filter media 3 is cleaned according to the predetermined filtration time or pressure loss. The supply of the liquid to be treated is stopped, and compressed air, cleaning water, etc. are injected from the cleaning pipe 9 connected to the cleaning fluid supply passage 8 toward the filter media layer 5 to agitate and clean the filter media 3. During agitation, suspended solids that were trapped in the filter media 3 detach from the filter media 3 and settle downwards, restoring the filter media 3. The cleaning wastewater is discharged to the outside from the treated liquid discharge passage 16 at the bottom of the treatment tank 2.

[0037] The adsorbent 12 is replaced according to a predetermined adsorption time or the water quality of the treated water. The supply of the liquid to be treated is stopped, and the opening lid 17 is removed from the treatment tank 2 and pulled out together with the adsorbent cartridge 11. The storage body 14 is removed from the opening lid 17, and the adsorbent 12 that has sufficiently adsorbed dissolved substances, which is filled inside the storage body 14, is taken out. Then, the storage body 14 is filled with new adsorbent 12, and the storage body 14 is fixed to the opening lid 17 and installed in the treatment tank 2.

[0038] Figure 5 is a longitudinal cross-sectional view of a purification device in another embodiment. In a device that performs purification treatment using a downward flow treatment, an adsorption layer 10 is installed upstream of the filter media layer 5. An adsorption cartridge 11 filled with adsorbent 12 is inserted through an opening above the treatment tank 2 and fixed in a detachable manner. In particular, if the liquid to be treated contains dissolved substances that may adversely affect the filter media 3, the liquid to be treated comes into contact with the adsorbent 12 first in the treatment tank 2, so that stable filtration can be performed in the filter media layer 5 with the concentration of dissolved substances in the liquid to be treated reduced. To prevent suspended solids from being captured by the adsorbent 12 and reducing the adsorption efficiency, the spaces between the fibers forming the adsorbent 12 may be made coarser to allow suspended solids to pass through. Furthermore, if a rod-shaped or string-shaped detachable part 15 is formed extending into the inside of the treatment tank 2, the adsorption cartridge 11 can be installed at any position in the treatment tank 2. Depending on the properties of the liquid to be treated, the adsorption layer 10 may be installed on both the upstream and downstream sides of the filter media layer 5.

[0039] Alternatively, the filter media layer 5 and the adsorption layer 10 may be formed in a cylindrical shape inside the treatment tank 2, with a return water channel provided at the top or bottom to ensure efficient contact between the layers with the water to be treated. Furthermore, a circulation supply line may be configured to re-treat the treated liquid discharged to the outside through the treated liquid discharge channel 16. [Industrial applicability]

[0040] Because it is composed of an amorphous filter media with fixed fibers and microscopic voids inside, and an amorphous adsorbent, high-speed processing of the liquid to be treated is possible. Furthermore, since the adsorbent is filled into a cartridge that can be attached and detached from the outside, the adsorption layer can be easily stacked on the same treatment device. It can be effectively used for the purification of groundwater, wastewater, and other liquids with high levels of contamination that require large-volume treatment. [Explanation of symbols]

[0041] 1. Purification device 2. Treatment tank 3 filter media 5. Filter media layer 10 Adsorption layer 11 Adsorbent Cartridge 12 Adsorbent 13 Water passage holes 14 storage compartments 15 Detachable part 17 Opening lid

Claims

1. In a purification device (1) in which a filter layer (5) for filtering out fine impurities in the liquid to be treated and an adsorption layer (10) for adsorbing and removing dissolved substances in the liquid to be treated are superimposed inside the treatment tank (2), The filter media layer (5) is It is composed of an amorphous filter material (3) with fibers fixed to it and having minute voids inside, The adsorption layer (10) is An adsorbent (12) having an amorphous carrier with fibers fixed to it and containing an antibacterial agent, A storage body (14) having multiple water passage holes (13) smaller than the adsorbent material (12), It includes a detachable part (15) that is detachably fixed to the processing tank (2), The system consists of an adsorbent cartridge (11) that is detachably attached to the outside of the treatment tank (2). A purification device characterized by the following features.

2. The adsorbent cartridge (11) is It is detachably attached to the opening lid (17) of the processing tank (2). The purification device according to feature 1.

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