WO2017043803A1 - Filtre composite - Google Patents

Filtre composite Download PDF

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Publication number
WO2017043803A1
WO2017043803A1 PCT/KR2016/009726 KR2016009726W WO2017043803A1 WO 2017043803 A1 WO2017043803 A1 WO 2017043803A1 KR 2016009726 W KR2016009726 W KR 2016009726W WO 2017043803 A1 WO2017043803 A1 WO 2017043803A1
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WO
WIPO (PCT)
Prior art keywords
crystal
filter
filter unit
raw water
catalyst
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Application number
PCT/KR2016/009726
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English (en)
Korean (ko)
Inventor
최유승
오병수
정기택
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2017043803A1 publication Critical patent/WO2017043803A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/10—Magnesium; Oxides or hydroxides thereof
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents

Definitions

  • the present invention relates to a composite filter adapted to remove hard or scale-inducing substances from raw water.
  • Water hardness means that the amount of calcium ions and magnesium ions in water is quantified in terms of the corresponding amount of calcium carbonate (calcium carbonate, CaCO 3 ) (unit mg / l).
  • the hardness of water is known to affect the taste of water. If the hardness of water is higher than the standard, it is classified as hard water and if it is lower than the standard, it is classified as soft water.
  • the World Health Organization (WHO) guidelines further refine the criteria for hard water and training.
  • the scale (for example, CaCO 3 ) refers to a substance that is formed when the mineral component remaining in the water aggregates after evaporation of water. It is necessary to prevent the generation of scales because scales generated at the outlet of water systems such as refrigerators and water purifiers are recognized by the consumer as a failure or deterioration of the water system.
  • the hard material combines with the negative ions of the detergent, causing deterioration of cleaning power and creating insoluble detergents. It is necessary.
  • Ion exchange resins exist as a technique for lowering the hardness of water in the prior art.
  • the ion exchange resin has a mechanism of lowering the hardness of water through the exchange of Na + or H + ions present in the ion exchange resin and Ca 2 + or Mg 2 + ions present in the water.
  • ion exchange resins have a short lifespan due to the limitation of processing capacity. Therefore, in order to continue using the ion exchange resin, it must be regenerated. However, not only is the waste of water serious in the regeneration process, but there is also a problem of environmental pollution, and in particular, the regeneration efficiency gradually decreases as the regeneration is repeated.
  • One object of the present invention is to propose a unit composite filter capable of removing the hard or scale-inducing substances present in water, and removing particulate matter, organic substances and residual chlorine present in water.
  • Another object of the present invention is to propose a composite filter capable of removing hardness or scale causing substances present in water without requiring frequent regeneration.
  • Another object of the present invention is to propose a composite filter having a flow path structure capable of improving the hardness or scale-inducing substance removal performance of the crystal forming catalyst.
  • Another object of the present invention is to propose a composite filter which can improve the performance of the crystal forming catalyst in consideration of the relationship between the flow rate and the filtration performance.
  • a composite filter includes: a pre-filter unit configured to remove at least one of particulate matter, organic matter, and residual chlorine present in raw water; And a flow path structure formed in at least one of an upstream side and a downstream side of the pre-filter unit, and having a flow path structure in which raw water rises from the bottom, and to remove the hardness material or scale-inducing material from the raw water filling the flow path structure. It includes a catalytic filter portion.
  • the crystal formation catalyst filter unit includes a plurality of crystal production catalysts, and the crystal production catalysts promote the reaction of calcium cations and bicarbonate anions present in the raw water or present in the raw water. By promoting the reaction of the magnesium cation and bicarbonate anion, it can be made to crystallize the hardness material or the scale-inducing material.
  • the crystal production catalyst filter unit includes a plurality of crystal production catalysts, the crystal production catalysts comprising: a carrier made of a polymer having a negative charge; And a crystal seed present at the crystallization site of the carrier and comprising at least one of calcium and magnesium.
  • the composite filter includes a housing accommodating the pre-filter part and the crystal-forming catalyst filter part, wherein the crystal-forming catalyst is disposed in a space remaining after the pre-filter part is disposed inside the housing.
  • the crystal forming catalyst of the filter unit may be introduced.
  • the composite filter includes a housing having an inlet portion formed to supply water to an outer circumferential surface of the prefilter portion, wherein the prefilter portion includes a hollow portion and flows from the outer circumferential surface toward the inner circumferential surface. It is made to filter the raw water, the crystal-generation catalyst filter is disposed in the hollow portion to be wrapped by the pre-filter unit, the outer wall surface facing the pre-filter unit, the raw water passing through the pre-filter unit the outer wall surface It can be made to flow down.
  • the lower end of the crystal generation catalyst filter unit may be formed so that the raw water flows down from the inner bottom surface of the housing and flows down the outer wall surface to fill the flow path structure of the crystal generation catalyst filter unit.
  • the crystal generation catalyst filter unit may include an inner wall surface surrounding a plurality of crystal production catalysts, and a spiral protrusion may be formed on the inner wall surface.
  • the composite filter includes a housing having an inlet; And a cylindrical inlet flow passage extending from the center of the housing in the up and down direction and receiving raw water flowing from the top to the bottom through the inlet section, wherein the crystal generation catalyst filter unit is configured to receive the inlet channel and the prefilter unit. And a hollow portion for receiving the water flow path, the prefilter portion being disposed to be wrapped by the inner circumferential surface of the housing, and the hollow portion for accommodating the inlet flow passage. Can be.
  • the lower end of the crystal generation catalyst filter unit may be formed to be spaced apart from the inner bottom surface of the housing so that the raw water flowing down through the inlet flow channel is filled with the flow path structure of the crystal generation catalyst filter unit.
  • the crystal generation catalyst filter unit may include a plurality of protrusions formed at positions facing the inner circumferential surface of the housing, and the plurality of protrusions may be disposed to be spaced apart from each other in a direction in which raw water fills the crystal generation catalyst filter unit.
  • the crystallization catalyst promotes the crystallization of the hardness material or scale-inducing material, it is possible to remove the hardness material or scale-inducing material from raw water. Accordingly, the hardness of the water can be lowered.
  • the crystal forming catalyst since the crystal forming catalyst has a slower reaction rate than the ion exchange resin but has an extremely long life, it does not require frequent regeneration. In addition, since the crystal formation catalyst does not require regeneration, it is possible to solve the problem of water waste, environmental pollution, and reduction of regeneration efficiency, which are problems in the ion-bonded resin.
  • the present invention proposes a structure in which the hard material or the scale-inducing material can be naturally separated from the crystal formation catalyst after crystallization by the crystal formation catalyst.
  • the natural separation of the crystals allows the crystal-forming catalyst to rejoin other reactions, thus improving the performance of the entire composite filter as well as allowing the crystal-forming catalyst to continuously filter hard or scale-inducing materials without regeneration. have.
  • the present invention proposes a configuration in which the crystallization catalyst also has sufficient filtration performance in an appropriate flow rate range of the prefilter part by forming turbulent flow using the protrusion.
  • the complementary structure is proposed so that the crystal-forming catalyst has sufficient filtration performance in the proper flow range of the pre-filter section. Filtration performance of the entire filtration system can be improved.
  • the complementary structure does not escape the tendency of miniaturization and simplification of the filtration system.
  • FIG. 1 is a cross-sectional view of a composite filter showing a first embodiment of the present invention.
  • FIG. 2 is a conceptual diagram of a crystal formation catalyst.
  • FIG 3 is a cross-sectional view of a composite filter showing a second embodiment of the present invention.
  • FIG. 5 is a conceptual diagram of a two-stage filtration system by connecting the composite filter and the other filter of the present invention in series.
  • FIG. 6 is another conceptual diagram illustrating a two-stage filtration system by connecting the composite filter and the other filter of the present invention in series.
  • FIG. 7 is a conceptual diagram illustrating a three-stage filtration system by connecting the composite filter and other filters of the present invention in series.
  • FIG. 8 is another conceptual diagram illustrating a three-stage filtration system by connecting the composite filter and other filters of the present invention in series.
  • FIG. 1 is a cross-sectional view of a composite filter 100 showing a first embodiment of the present invention.
  • the prefilter unit 110 is configured to remove at least one of particulate matter, organic matter, and residual chlorine present in the raw water.
  • the prefilter unit 110 is formed at at least one of an upstream side and a downstream side of the crystal generation catalyst filter unit 120. Upstream and downstream are the concept of relative position relative to the water flow. When water passes through the pre-filter unit 110 first and then through the crystal-generation catalyst filter unit 120, it will be described that the pre-filter unit 110 is formed upstream of the crystal-forming catalyst filter unit 120. Can be. In FIG. 1, the pre-filter unit 110 is formed upstream of the crystal generation catalyst filter unit 120.
  • the prefilter unit 110 may include at least a part selected from the group consisting of a precipitation filter, an electrostatic adsorption filter, and a carbon block filter.
  • the foreign matter filtered by the pre-filter unit 110 may vary depending on which filter the pre-filter unit 110 includes.
  • the prefilter unit 110 is formed of a hollow cylinder or a hollow polygonal column.
  • the hollow part of the prefilter unit 110 may be referred to as a hollow portion.
  • the hollow part is an area for accommodating the crystal generating catalyst filter part 120.
  • the prefilter unit 110 has an outer circumferential surface and an inner circumferential surface.
  • the outer circumferential surface refers to a surface facing the inner circumferential surface of the housing 130.
  • the inner circumferential surface refers to a surface facing the crystal generation catalyst filter unit 120 disposed in the hollow portion.
  • the pre-filter unit 110 is configured to filter the raw water flowing from the outer peripheral surface toward the inner peripheral surface. Arrows in FIG. 1 indicate the flow of raw water. Raw water is filtered in the course of flowing from the outer peripheral surface of the pre-filter unit 110 toward the inner peripheral surface. However, the raw water does not necessarily flow in the horizontal direction, but may gradually flow down by gravity as shown in FIG. 1 in the process of flowing from the outer circumferential surface of the prefilter unit 110 to the inner circumferential surface direction.
  • the crystal generation catalyst filter unit 120 is formed in at least one of the upstream side and the downstream side of the prefilter unit 110.
  • FIG. 1 shows a configuration in which the crystal generation catalyst filter 120 is formed downstream of the prefilter 110.
  • the crystal generation catalyst filter unit 120 includes an outer wall surface 122, an inner wall surface 123, a plurality of crystal generation catalysts 121, and a protrusion 124.
  • the crystal generation catalyst filter unit 120 has a configuration in which a plurality of crystal generation catalysts 121 are filled in substantially hollow cylinders or hollow polygonal pillars.
  • the outer wall surface 122 and the inner wall surface 123 indicate the inner wall surface 123 and the outer wall surface 122 of the hollow cylinder or the hollow polygonal column.
  • the crystal generation catalyst filter unit 120 is inserted into the hollow part of the prefilter unit 110 so as to be wrapped by the prefilter unit 110.
  • the crystal generation catalyst filter unit 120 and the pre-filter unit 110 may be formed in one unit module so as to be easily combined or separated.
  • the crystal generation catalyst filter unit 120 of the unit module is inserted into the hollow portion of the pre filter unit 110 which is another unit module, so that the crystal generation catalyst filter unit 120 and the pre filter unit 110 may be combined. have.
  • the outer wall surface 122 of the crystal generation catalyst filter unit 120 faces the inner circumferential surface of the prefilter unit 110.
  • Raw water filtered by the pre-filter unit 110 is collected to the inner peripheral surface of the pre-filter unit 110.
  • the outer wall surface 122 is formed such that raw water passing through the pre-filter unit 110 flows down the outer wall surface 122. Accordingly, the pre-filter unit 110 and the outer wall surface 122 of the crystal generation catalyst filter unit 120 are combined with each other to form a flow of raw water flowing from the top to the bottom.
  • the crystal generation catalyst filter unit 120 has a flow path structure in which raw water rises from the bottom up.
  • the lower end of the crystal generation catalyst filter unit 120 is spaced apart from the inner bottom surface of the housing 130, and the raw water flowing down the outer wall surface 122 flows into the flow path structure of the crystal generation catalyst filter unit 120. It is formed to rise.
  • the crystal generation catalyst filter unit 120 is configured to remove the hard material or the scale-inducing material from the raw water filled in the flow path structure.
  • the space in which the crystal generating catalyst 121 exists refers to a flow path structure through which raw water passes, and refers to a space surrounded by the inner wall surface 123 of the crystal generating catalyst filter unit 120 in FIG. 1.
  • the flow of water is also called up-flow.
  • a catalyst refers to a substance that serves to promote or inhibit a chemical reaction, and the catalyst is left intact after mixing with the product.
  • the crystal forming catalyst 121 of the present invention also promotes crystal formation of the hard material or scale-inducing material, but remains unchanged after mixing with the product. Crystals generated by promoting crystal formation must be separated from the crystal formation catalyst 121 so that the crystal formation catalyst 121 can participate in other reactions. Therefore, in order to improve the hardness or scale-inducing substance removal performance of the crystal forming catalyst 121, it is necessary to quickly separate the crystal from the crystal forming catalyst 121.
  • the crystal generation catalyst filter unit 120 When the crystal generation catalyst filter unit 120 has a flow path structure in which raw water rises from the bottom, the raw water filling the flow path structure provides buoyancy to the crystal production catalyst 121. Due to this buoyancy, the flow of the crystal formation catalyst 121 becomes active, and thus crystals can be separated from the crystal formation catalyst 121.
  • the crystal formation catalyst filter unit 120 has a flow path structure in which the raw water rises from the bottom, the crystal may be naturally separated from the crystal formation catalyst 121 by using the buoyancy provided by the raw water without applying an external force. That has the advantage.
  • the crystal generation catalyst filter unit 120 has a flow path structure in which raw water falls from the top to the bottom, unlike the present invention, an effect of separating the crystal from the crystal generation catalyst 121 may be expected only by applying an external force. .
  • This type of flow is called down-flow, which is distinguished from the upward flow.
  • the inner wall surface 123 of the crystal generation catalyst filter unit 120 surrounds the plurality of crystal generation catalysts 121.
  • the plurality of crystal generation catalysts 121 are filled in a space surrounded by the inner wall surface 123 of the crystal generation catalyst filter unit 120.
  • a spiral protrusion 124 is formed on the inner wall surface 123.
  • the composite filter 100 may include a pre-filter unit 110 as well as a crystal generation catalyst filter unit 120, and may be connected in series with various additional filters to form a filtration system as described with reference to FIGS. 5 to 8. have.
  • the performance of the filtration system is determined by the individual filters forming the filtration system.
  • the performance of each filter is affected by the flow rate of the raw water, in order to improve the performance of the filtration system as a whole, the flow rate of the raw water passing through the individual filters must be maintained in an appropriate range.
  • the crystal formation catalyst 121 tends to decrease and increase as the flow rate increases. This is because the crystal formation catalyst 121 must be separated from the crystals by being affected by the active flow of raw water, so that the crystal formation catalyst 121 can participate in the reaction to promote the crystal production again. Therefore, the following two approaches can be considered to improve the performance of the filtration system as a whole.
  • the first is to configure the filtration system so that the flow rate is set differently for each filter and supply the proper flow rate for each filter.
  • This method can provide the best filtration performance for each filter, which can dramatically improve the performance of the filtration system.
  • a separate device for controlling the flow rate between the filters is required. This does not fit the tendency of the filtration system to be miniaturized and simplified due to space utilization and hygiene.
  • the second is to set the flow rate of the filtration system to a range of flow rates suitable for a part of the filter, but complement other filters so as to exhibit sufficient filtration performance within the range of the set flow rate.
  • the second approach may be less effective in improving the performance of the filtration system than the first, but it may contribute to the miniaturization and simplification of the filtration system since no separate device is required to control the flow rate between the filter and the filter.
  • the present invention employs a second approach in accordance with the trend toward miniaturization and simplification of the filtration system.
  • the composite filter 100 may include the pre-filter unit 110 as well as the crystal forming catalyst 121. Furthermore, the composite filter 100 may be combined with other filters to form a filtration system. Therefore, if the performance of the pre-filter unit 110 and the other filters should be compensated for according to the proper flow rate of the crystal-forming catalyst 121, the filter other than the pre-filter unit 110 except the crystal-forming catalyst 121 Complementary structures need to be considered for each, which complicates the task.
  • a protrusion 124 formed on the inner wall surface 123 may be provided as a way to compensate for the filtration performance of the crystal forming catalyst 121 in the proper flow rate range of the pre-filter unit 110. Adopted.
  • the crystal forming catalyst 121 tends to decrease after increasing the filtration performance as the flow rate increases. Therefore, considering only the crystal formation catalyst 121, it is preferable to increase the flow rate until the improvement of the filtration performance is saturated.
  • the filter has a tendency of increasing and decreasing the filtration performance as the flow rate increases, and has a high filtration performance in a flow rate range relatively smaller than the optimum flow rate of the crystal forming catalyst 121.
  • the protrusion 124 formed on the inner wall surface 123 is formed to improve the filtration performance of the crystal forming catalyst 121 at a relatively small range of flow rates.
  • the protrusion 124 collides with particles of the raw water to cause turbulence in the flow of the raw water.
  • the flow rate through the composite filter 100 is smaller than the optimum flow rate of the crystal forming catalyst 121, separation of the crystal from the crystal forming catalyst 121 can be achieved by turbulence.
  • the crystal generating catalyst 121 separated from the crystal may participate again in another reaction. Therefore, the protrusion 124 formed on the inner wall surface 123 may improve the filtration performance of the crystal forming catalyst 121 even in a relatively small flow rate range through the formation of turbulent flow.
  • the composite filter 100 includes a housing 130 configured to receive the pre-filter unit 110 and the crystal generation catalyst filter unit 120.
  • a housing 130 configured to receive the pre-filter unit 110 and the crystal generation catalyst filter unit 120.
  • an inlet 131 and an outlet 132 may be formed in the housing 130.
  • the inlet 131 is formed to supply water to the outer circumferential surface of the prefilter unit 110.
  • the water extraction unit 132 is formed to discharge water passing through the crystal generation catalyst filter unit 120 to the outside of the composite filter 100.
  • the pre-filter unit 110 may be disposed inside the housing 130 and the crystal-forming catalyst 121 of the crystal-forming catalyst filter unit 120 may be introduced into the remaining space. Since the crystal generation catalyst filter unit 120 is not formed of blocks but is formed by a plurality of crystal generation catalysts 121 aggregated, the crystal generation catalyst filter unit 120 forms a single filter with the pre-filter unit 110 when it is put into the remaining space of the housing 130. It is possible to reduce the size of the composite filter 100.
  • the composite filter 100 includes an intake nonwoven filter 141 and an outflow nonwoven filter 142.
  • Incoming nonwoven filter 141 is disposed at the bottom inlet of the crystal generation catalyst filter 120.
  • the water extraction nonwoven filter 142 is disposed at the top outlet of the crystal generation catalyst filter 120.
  • FIG. 2 is a conceptual diagram of the crystal generating catalyst 121.
  • the crystal generating catalyst 121 includes a carrier 121a (catalyst support, carrier, or supporting material) and a crystal seed 121c.
  • the carrier 121a is made of a polymer having a negative charge. Hard materials such as calcium cations, magnesium cations or scale-inducing materials are positively charged. Therefore, if the carrier 121a is made of a polymer having a negative charge, the carrier 121a may attract the hard material or the scale-inducing material by the electrostatic attraction. Negatively charged polymers include, for example, polyacrylates.
  • crystallization sites 121b are formed on the surface of the carrier 121a.
  • the crystallization site 121b indicates a space in which crystallization of the hard moving material or the scale causing material is made.
  • the crystal seed 121c is present at the crystallization site 121b.
  • the crystal seed 121c is an inorganic material that makes the hard material or the scale-inducing material into a crystal.
  • the crystal seed 121c includes at least one of calcium and magnesium.
  • the crystal seed 121c may include at least one of calcium carbonate (calcium carbonate, CaCO 3 ) crystals and magnesium carbonate (magnesium carbonate, MgCO 3 ) crystals.
  • Hard materials or scale-inducing substances present in raw water are collected at the crystallization sites 121b of the carrier 121a by electrostatic attraction when they approach the crystal forming catalyst 121.
  • the crystal seed 121c is present at the crystallization site 121b, and the hard material or the scale-inducing material is crystallized by the crystal seed 121c.
  • the crystallization scheme of the hardness material or the scale-inducing material may be represented by Formula 1 and Formula 2. MEDIA points to the crystal formation catalyst 121.
  • Crystallization catalyst 121 is a calcium cation (Ca 2 +) and bicarbonate anion (HCO 3 -) present in the raw water as shown in the formula (1) to facilitate the reaction. Further crystallization catalyst 121 is a magnesium cation (Mg 2 +) and bicarbonate anion (HCO 3 -) present in the raw water as shown in formula (2) to facilitate the reaction.
  • the crystal formation catalyst 121 contributes to crystallization of the hard material or the scale-inducing material through the promotion of the chemical formula 1 reaction and the chemical formula 2 reaction.
  • Crystals separated from the crystal formation catalyst 121 may be mechanically filtered by the water extraction nonwoven filter 142 described in FIG.
  • FIG 3 is a cross-sectional view of a composite filter 200 showing a second embodiment of the present invention.
  • the housing 230 has an inlet 231 and an outlet 232.
  • the inlet 231 corresponds to a flow path through which water enters the composite filter 200
  • the water outlet 232 corresponds to a flow path through which water flows out of the composite filter 200.
  • the cylindrical inlet flow path 250 extends in the vertical direction from the center of the housing 230.
  • the inflow passage 250 receives raw water flowing from the top to the bottom through the inlet 231.
  • Raw water supplied from the inlet 231 to the inlet flow path 250 flows from the top to the bottom along the inlet flow path 250.
  • the lower end of the inflow passage 250 is spaced apart from the inner bottom surface of the housing 230.
  • the lower end of the crystal generation catalyst filter 220 is also spaced apart from the inner bottom surface of the housing 230. This is to allow the raw water that has passed through the inflow passage 250 to be supplied to the crystal generation catalyst filter 220 through the intake nonwoven filter 241. Through such a structure, the raw water flowing down through the inflow channel 250 is formed to be filled into the flow path structure of the crystal generation catalyst filter 220.
  • the crystal generation catalyst filter 220 includes a hollow portion accommodating the water flow passage 250 and the pre-filter portion 210.
  • the inflow passage 250 and the prefilter unit 210 are inserted into the hollow portion of the crystal generation catalyst filter unit 220.
  • the crystal generation catalyst filter 220 is disposed between the prefilter 210 and the housing 230.
  • the crystal generation catalyst filter 220 is disposed to surround the inner circumferential surface of the housing 230.
  • the crystal generation catalyst filter 220 has a flow path structure in which raw water rises from the bottom up.
  • the inlet nonwoven filter 241 is installed at the inlet of the crystal generation catalyst filter 220, and the raw water introduced into the crystal generation catalyst filter 220 through the inlet nonwoven fabric filter 241 is the crystal generation catalyst filter 220. It is filtered during the flow from bottom to top along the flow path structure of). Raw water is filtered by the crystal production catalyst filter 220 during the flow from the outer peripheral surface of the crystal production catalyst filter 220 toward the inner peripheral surface.
  • the crystal generation catalyst filter 220 includes a plurality of protrusions 224 formed at positions facing the inner circumferential surface of the housing 230.
  • the plurality of protrusions 224 are spaced apart from each other in a direction in which raw water rises in the crystal generation catalyst filter 220.
  • the protrusion 224 functions substantially the same as the protrusion 224 described in the first embodiment. However, as the structures of the pre-filter unit 210 and the crystal generation catalyst filter unit 220 are changed, they are deformed according to the structure of the protrusion 224.
  • the pre-filter unit 210 includes a hollow portion accommodating the water inflow passage 250.
  • the inflow passage 250 is inserted into the hollow portion of the prefilter unit 210.
  • the pre-filter unit 210 is disposed in the hollow portion of the crystal-generation catalyst filter 220 so as to be surrounded by the crystal-generation catalyst filter 220.
  • an inlet flow path 250 is disposed in the center of the housing 230, the prefilter unit 210 surrounds the inlet flow path 250, and the crystal generation catalyst filter unit 220 is a prefilter unit ( 210, the housing 230 surrounds the crystal generation catalyst filter 220.
  • a water extraction nonwoven filter 242 is provided around the water inlet flow path 250.
  • the composite filter 200 is formed such that raw water flows to the water extraction unit 232 only through the water extraction nonwoven filter 242.
  • Hardness reduction rate refers to the filtration ability to remove hardness and scale-causing substances from raw water.
  • the ion exchange resin shows a rapid high filtration performance from the beginning. Since the hardness of the raw water exposed to the ion exchange resin is lowered within a short time, it can be seen that the ion exchange resin has a very fast reaction rate. In addition, since the rate of decrease in hardness of the ion exchange resin is almost 100%, it can be confirmed that the ion exchange resin has very excellent filtration performance.
  • the crystal formation catalyst increases slowly compared to the ion exchange resin. This means that the crystal forming catalyst has a slower reaction rate than the ion exchange resin.
  • the filtration performance of the crystal-forming catalyst gradually increases with time. This means that the lifetime of the crystal forming catalyst is much longer than that of the ion exchange resin, and unlike the ion exchange resin, it does not require frequent regeneration.
  • the crystallization catalyst has a much longer life than the ion exchange resin due to the difference in mechanism. Since the ion exchange resin removes hard or scale-inducing substances from raw water through exchange between ions, the number of exchangeable ions decreases over time. On the other hand, the crystal forming catalyst can semi-permanently filter raw water since the produced crystal is separated from the crystal forming catalyst, so that it can participate in another reaction to produce the crystal again.
  • the composite filter of the present invention has a slow reaction rate compared to the ion exchange resin, but does not require frequent regeneration, has a very long life, and solves problems such as water waste, environmental pollution, and reduction of regeneration efficiency due to regeneration. Has the advantage.
  • the filtration system is constructed by connecting the composite filter 100 or 200 of the present invention in series with other filters. If the composite filter 100 or 200 consists of a single filter, the filtration system is formed of a set of several filters.
  • FIG. 5 is a conceptual diagram illustrating a two-stage filtration system by connecting the composite filter 100 or 200 of the present invention and other filters in series.
  • the filtration system is formed by connecting two filters in two stages.
  • the composite filter 100 or 200 of the present invention is disposed on the upstream side, and the UF filter 300 (Ultrafiltration) is disposed on the downstream side.
  • the UF filter 300 filters the water by the pressure difference, and separates a specific substance from the water by the size difference between the pores and the solutes.
  • the composite filter 100 or 200 and the UF filter 300 are connected in series.
  • At least one of particulate matter, organic matter, and residual chlorine is removed from the prefilter unit 210 of the composite filter 100 or 200.
  • the hardness material or the scale-inducing material is removed.
  • the UF filter 300 may remove the solutes, colloids, proteins, microbiological contaminants and large organic molecules from the water filtered by the composite filter 100 or 200.
  • FIG. 6 is another conceptual view illustrating a two-stage filtration system by connecting the composite filter 100 or 200 and other filters of the present invention in series.
  • the filtration system is formed by connecting two filters in two stages.
  • the composite filter 100 or 200 of the present invention On the upstream side, the composite filter 100 or 200 of the present invention is disposed, and on the downstream side, the composite filter 300, 400 having the UF filter unit 300 and the post carbon block filter unit 400 is disposed.
  • the upstream composite filter 100 or 200 may be referred to as a first composite filter 100 or 200.
  • the downstream composite filters 300 and 400 may be referred to as second composite filters 300 and 400.
  • the second composite filters 300 and 400 include the UF filter unit 300 and the post carbon block filter unit 400 in one housing (not shown).
  • the post carbon block filter unit 400 of the second composite filter 300 or 400 filters out bacteria, which can be propagated in the filtration system, one last time. The description of the remaining filter or filter unit is replaced with the above description.
  • FIG. 7 is a conceptual diagram illustrating a three-stage filtration system by connecting the composite filter 100 or 200 and other filters of the present invention in series.
  • the filtration system is formed by connecting three filters in three stages.
  • the composite filter 100 or 200 of the present invention is disposed on the upstream side, the UF filter 300 is disposed on the midstream side, and the carbon block filter 400 is disposed on the downstream side.
  • the composite filter 100 or 200, the UF filter 300 and the carbon block filter 400 are connected in series.
  • the filtration system of FIG. Unlike the second composite filter 100 or 200 described in FIG. 6 having the UF filter unit 300 and the post carbon block filter unit 400 in one housing (not shown), the filtration system of FIG. There is a difference in that the filter 300 and the carbon block filter 400 are provided in different housings (not shown).
  • FIG. 8 is another conceptual diagram illustrating a three-stage filtration system by connecting the composite filter 100 or 200 and other filters of the present invention in series.
  • a carbon block filter is disposed on the upstream side, an UF filter is disposed on the middle side, and a composite filter 100 or 200 is disposed on the downstream side.
  • the filtration system of FIG. 8 differs only in the arrangement order of the filtration system and the filter of FIG. The order of the filters forming the filtration system can be changed in design as needed.
  • the complex filter described above is not limited to the configuration and method of the above-described embodiments, but the embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made.
  • the present invention can be used in industrial fields related to filters that filter raw water to produce purified water.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Materials Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un filtre composite comprenant : une partie pré-filtre conçue pour retirer des matériaux particulaires et/ou des matériaux organiques et/ou du chlore résiduel présents dans l'eau brute ; et une partie filtre catalytique de cristallisation qui est formée sur le côté supérieur et/ou le côté inférieur de la partie pré-filtre, possède une structure de trajet d'écoulement dans laquelle l'eau brute est introduite depuis le fond jusqu'en haut, et est conçue pour retirer les matériaux solides dissous ou les matériaux favorisant l'entartrage présents dans l'eau brute introduite dans la structure de trajet d'écoulement.
PCT/KR2016/009726 2015-09-09 2016-08-31 Filtre composite WO2017043803A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0127832 2015-09-09
KR1020150127832A KR101798047B1 (ko) 2015-09-09 2015-09-09 복합 필터

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WO2017043803A1 true WO2017043803A1 (fr) 2017-03-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10836664B2 (en) 2017-06-19 2020-11-17 Lg Electronics Inc. Hardness reduction filter
CN115557616A (zh) * 2022-09-22 2023-01-03 西安石油大佳润实业有限公司 循环水脱盐装置

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KR200218769Y1 (ko) * 2000-11-10 2001-04-02 권진철 정수필터
KR20120064955A (ko) * 2010-12-10 2012-06-20 웅진케미칼 주식회사 외부밸브 승강식 오토 셧오프밸브가 구비된 필터 조립체
JP2012524653A (ja) * 2009-04-21 2012-10-18 イーコラブ ユーエスエー インコーポレイティド 触媒系水処理方法及び装置
KR20130133469A (ko) * 2012-05-29 2013-12-09 박병권 와류 유도형 정수부재를 채용한 정수장치
KR101477600B1 (ko) * 2013-10-24 2014-12-30 주식회사 마이크로필터 격벽이 구비된 필터체를 포함하는 필터장치

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Publication number Priority date Publication date Assignee Title
KR200218769Y1 (ko) * 2000-11-10 2001-04-02 권진철 정수필터
JP2012524653A (ja) * 2009-04-21 2012-10-18 イーコラブ ユーエスエー インコーポレイティド 触媒系水処理方法及び装置
KR20120064955A (ko) * 2010-12-10 2012-06-20 웅진케미칼 주식회사 외부밸브 승강식 오토 셧오프밸브가 구비된 필터 조립체
KR20130133469A (ko) * 2012-05-29 2013-12-09 박병권 와류 유도형 정수부재를 채용한 정수장치
KR101477600B1 (ko) * 2013-10-24 2014-12-30 주식회사 마이크로필터 격벽이 구비된 필터체를 포함하는 필터장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10836664B2 (en) 2017-06-19 2020-11-17 Lg Electronics Inc. Hardness reduction filter
CN115557616A (zh) * 2022-09-22 2023-01-03 西安石油大佳润实业有限公司 循环水脱盐装置

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