WO2018194175A1 - Dispositif d'agitation et système de traitement d'eau - Google Patents

Dispositif d'agitation et système de traitement d'eau Download PDF

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Publication number
WO2018194175A1
WO2018194175A1 PCT/JP2018/016365 JP2018016365W WO2018194175A1 WO 2018194175 A1 WO2018194175 A1 WO 2018194175A1 JP 2018016365 W JP2018016365 W JP 2018016365W WO 2018194175 A1 WO2018194175 A1 WO 2018194175A1
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WO
WIPO (PCT)
Prior art keywords
water tank
water
stirring
additive
addition
Prior art date
Application number
PCT/JP2018/016365
Other languages
English (en)
Japanese (ja)
Inventor
祐資 久本
太秀 山口
好一 加藤
孝宏 根本
尚文 後藤
Original Assignee
メタウォーター株式会社
佐竹化学機械工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by メタウォーター株式会社, 佐竹化学機械工業株式会社 filed Critical メタウォーター株式会社
Priority to JP2019513713A priority Critical patent/JP7134947B2/ja
Publication of WO2018194175A1 publication Critical patent/WO2018194175A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Definitions

  • the present invention relates to a stirring device and a water treatment system.
  • Water for water supply that is, water for waterworks, for example, by introducing river water (raw water) into the aquarium, adding flocculants and other additives to the introduced raw water, generating floc, and removing the floc Purified and supplied to households.
  • the additive is added, the raw water is stirred so that the additive is mixed and dispersed in the raw water.
  • a turbine blade or a paddle blade has been used as the stirring blade that gives the uniform mixing and dispersing action.
  • additives such as a flocculant may be added and agitated in the same manner for water treatment of middle water, waste water such as sewage and industrial wastewater.
  • the additive was added in the water tank using piping.
  • the opening (additive addition port) of this pipe is arranged above the water tank and in the vicinity of the stirring blade, and the additive is dropped from this addition port.
  • the additive may be directly injected into the raw water in the water tank from the addition port.
  • a baffle is disposed at the bottom of a stirring tank in which a liquid in which slurry is mixed is stored, and stirring is performed with a stirring blade provided at the top of the stirring tank. A technique for stirring slurry and liquid with low power is described.
  • the addition port of the additive may not be properly dispersed in the raw water depending on the direction of the water flow generated by the stirring blade.
  • the addition port is arranged in the water tank, the addition port is always submerged in the raw water, so that the addition port may be clogged, and it is difficult to visually confirm that the addition port is clogged. . Therefore, when the addition port is arranged in the water tank, there is a possibility that the additive cannot be appropriately added.
  • the technique which adds an additive appropriately and disperses an additive in a liquid appropriately is calculated
  • This invention is made in view of the above, Comprising: It aims at providing the stirring apparatus and water treatment system which can add an additive appropriately and can further disperse an additive in a liquid appropriately To do.
  • a stirrer of the present disclosure is provided in a water tank into which liquid flows and a bottom surface of the water tank, and a plurality of plate-like members extend in a radial direction.
  • the agitating unit agitates the liquid in the water tank, and flows along the periphery of the ascending water flow that spirally rises upward in the vertical direction from the stationary blade portion toward the agitating unit.
  • a downward water flow that spirally descends downward in the vertical direction toward the stationary blade portion is generated, and the additive added from the addition position is entrained in the downward water flow, thereby dispersing the additive in the liquid It is preferable to make it.
  • a stirrer of the present disclosure is provided in a water tank into which liquid flows and a bottom surface of the water tank, and a plurality of plate-like members extend in a radial direction.
  • an additive addition part for adding an additive into the water tank from an addition position, and the stirring part stirs the liquid in the water tank, so that the stirrer part from the stationary blade part An upward water flow that spirally rises upward in the vertical direction toward the vertical direction, and a downward water flow that spirally descends downward in the vertical direction toward the stationary blade portion while flowing along the periphery of the stirring portion,
  • the addition position is a position vertically above the water surface of the liquid in the water tank. , A position radially outward from the stirring unit, and an upstream position of 180 degrees or more and 270 degrees or less in the flow along the periphery of the stirring unit of the descending water flow from the outlet. It is preferable.
  • the water treatment system of the present disclosure includes the stirring device.
  • the additive can be appropriately added, and the additive can be appropriately dispersed in the liquid.
  • FIG. 1 is a schematic block diagram of a water treatment system according to the first embodiment.
  • FIG. 2 is a schematic diagram of the stirring device according to the first embodiment.
  • FIG. 3 is a schematic diagram of the stirring device according to the first embodiment.
  • FIG. 4 is a schematic diagram for explaining the operation of the stirring device according to the first embodiment.
  • FIG. 5 is a schematic diagram for explaining the operation of the stirring device according to the first embodiment.
  • FIG. 6 is a schematic diagram illustrating another example of the outlet.
  • FIG. 7 is a schematic diagram illustrating another example of the addition position.
  • FIG. 8 is a schematic diagram of a stirring device according to the second embodiment.
  • FIG. 9 is a schematic diagram of a stirring device according to the third embodiment.
  • FIG. 1 is a schematic block diagram of a water treatment system according to the first embodiment.
  • the water treatment system 100 according to the first embodiment includes a landing well 12, a stirring device 14, a floc growth tank 16, a precipitation tank 18, and a filtration tank 20.
  • the water treatment system 100 is a system that performs raw water treatment on the raw water W1 taken into the landing well 12 and supplies it to the outside as water W5.
  • the water W5 is clean water. That is, the water treatment system 100 is a water purification facility, and is a facility for supplying water W5, which is water (water for water supply), to each household.
  • the water W5 is not limited to clean water, and may be water for any use. That is, the water W5 may be middle water, or the raw water W1 may be waste water such as sewage or industrial waste water.
  • the type of raw water W1 to be processed by the water treatment system 100 and the use of the water W5 may be arbitrary.
  • the raw water W1 is water containing fine solid particles, but may be slurried with a solid component, that is, for example, sludge.
  • the landing well 12 is a facility that takes in raw water W1.
  • the landing well 12 is a water tank in which raw water W1 from, for example, a river is introduced and the flow rate of the raw water W1 is adjusted in order to perform water treatment in each facility in the subsequent stage.
  • the stirring device 14 has a water tank 30 into which raw water W1 flows from the landing well 12.
  • the agitator 14 is a water tank facility for agitation in which the raw water W1 flows into the water tank 30 from the inflow pipe 36 and the raw water W1 is stirred while the additive P is added to the raw water W1.
  • the detailed configuration of the stirring device 14 will be described later.
  • the stirring device 14 supplies the raw water W1 stirred with the additive P added thereto as the added water W2 from the outflow pipe 38 to the subsequent floc growth tank 16.
  • the flock growth tank 16 has a plurality of water tanks 16A, and a stirrer 16B is provided in each water tank 16A.
  • the flock growth tank 16 stores the added water W2 in the water tank 16A, and stirs the stored added water W2 with the stirrer 16B.
  • the stirring speed (rotation speed) of the stirrer 16B is lower than the stirring speed (rotation speed) of the stirring unit 34 included in the stirring device 14 described later.
  • the floc growth tank 16 stirs the added water W2 with the stirrer 16B, thereby generating flocs in the added water W2 and growing the flocs.
  • the flock growth tank 16 may not have a plurality of water tanks 16A, and may have only one water tank 16A.
  • the sedimentation tank 18 In the sedimentation tank 18, floc-containing water W ⁇ b> 3 that is the added water W ⁇ b> 2 in which the floc has been grown in the floc growth tank 16 flows.
  • the sedimentation tank 18 stores the floc-containing water W3 to precipitate the grown floc.
  • the supernatant water W4 flows into the filtration tank 20 from the precipitation tank 18.
  • the filtration tank 20 includes a filtration unit 22 that performs sand filtration, for example.
  • the filtration tank 20 separates a fine solid component from the supernatant water W4 by filtering the supernatant water W4 through the filtration unit 22.
  • the raw water W1, the added water W2, the flock-containing water W3, the supernatant water W4, and the water W5 are not distinguished from each other, they are referred to as water W.
  • the water treatment system 100 has the above configuration.
  • FIG. 2 is a cross-sectional view of the stirring device 14, and FIG. 3 is a top view of the stirring device 14.
  • the stirring device 14 includes a water tank 30, a stationary blade part 32, a stirring part 34, an inflow pipe 36, an outflow pipe 38, an additive addition part 40, and a control part 42.
  • the stirrer 14 takes the raw water W1 into the water tank 30, adds the additive P to the raw water W1 by the additive addition unit 40, stirs the raw water W1 by the stirring unit 34, and the additive P is added and stirred.
  • the raw water W1 is discharged to the outside (here, the floc growth tank 16) as added water W2.
  • the water tank 30 is a water tank into which raw water W1 flows.
  • the length of the water tank 30 along the X direction is 3 m
  • the length along the Y direction is 3 m
  • the length along the Z direction is 4 m.
  • the length of each direction of the water tank 30 is an example and is arbitrary.
  • the X direction is a direction parallel to the horizontal direction.
  • the Y direction is a direction parallel to the horizontal direction and orthogonal to the X direction.
  • the Z direction is a direction orthogonal to the X direction and the Y direction, that is, a vertical direction.
  • one direction along the X direction is referred to as an X1 direction
  • the other direction along the X direction is referred to as an X2 direction.
  • one direction along the Y direction is a Y1 direction
  • the other direction along the Y direction is a Y2 direction
  • one direction along the Z direction is referred to as a Z1 direction
  • the other direction along the Z direction is referred to as a Z2 direction.
  • the Z1 direction is a direction that goes upward in the vertical direction (a direction away from the ground surface)
  • the Z2 direction is a direction that goes downward in the vertical direction (a direction toward the ground surface).
  • Water tank 30 has a bottom surface 30A and side portions 30B, 30C, 30D, and 30E.
  • the bottom surface 30A is a surface on the Z2 direction side of the water tank 30, that is, a bottom surface.
  • the side portions 30B, 30C, 30D, and 30E are side portions of the water tank 30.
  • the side portion 30 ⁇ / b> B is a surface of the water tank 30 on the X1 direction side.
  • the side portion 30C is a surface on the X2 direction side of the water tank 30, and is a surface facing the side portion 30B (on the side opposite to the side portion 30B).
  • the side portion 30D is a surface of the water tank 30 on the Y2 direction side.
  • the side portion 30E is a surface on the Y1 direction side of the water tank 30, and is a surface facing the side portion 30D (the side opposite to the side portion 30D).
  • the water tank 30 is not provided with a surface facing the bottom surface 30A, that is, an upper surface in the vertical direction (Z1 direction side), and an upper side in the vertical direction (Z1 direction side) is open.
  • the water tank 30 is thus a rectangular parallelepiped water tank whose upper surface is open, but may be, for example, a cylindrical water tank, and its shape is arbitrary.
  • the stationary blade portion 32 is provided inside the water tank 30 and on the bottom surface 30 ⁇ / b> A of the water tank 30.
  • the stationary blade portion 32 includes a plurality of plate members 50 ⁇ / b> A, 50 ⁇ / b> B, 50 ⁇ / b> C, and 50 ⁇ / b> D arranged side by side along the periphery of the central axis Ax of the water tank 30.
  • the central axis Ax is a central axis along the Z direction of the water tank 30.
  • the stationary blade portion 32 is the bottom surface 30A of the water tank 30, and is provided on the inner side (center axis Ax side) in the radial direction than the side portions 30B, 30C, 30D, and 30E of the water tank 30.
  • the plate portions 50A, 50B, 50C, and 50D extend in a radial direction with respect to the central axis Ax (Z direction). More specifically, the plate portions 50A, 50B, 50C, 50D extend outward in the radial direction with respect to the central axis Ax along the Z direction.
  • the plate portion 50A is located on the X1 direction side and the Y1 direction side from the central axis Ax, and extends along the Y direction.
  • the plate portion 50B is located on the X1 direction side and the Y2 direction side with respect to the central axis Ax, and extends along the X direction.
  • the plate portion 50C is located on the X2 direction side and the Y2 direction side with respect to the central axis Ax, and extends along the Y direction.
  • the plate portion 50D is located on the X2 direction side and the Y1 direction side from the central axis Ax, and extends along the X direction.
  • the plate portions 50A, 50B, 50C, and 50D are fixed to the bottom surface 30A in this state, do not rotate, and constitute the stationary blade portion 32.
  • the plate portions 50A, 50B, 50C, and 50D are not distinguished from each other, they are referred to as plate portions 50. Although there are four plate portions 50 in the present embodiment, the number is not limited to this.
  • the stirring unit 34 is provided above the stationary blade unit 32 in the vertical direction (Z2 direction side), and at least a part thereof is disposed in the water tank 30, and the raw water W ⁇ b> 1 in the water tank 30. Is stirred.
  • the stirring unit 34 is provided on the inner side in the radial direction (on the central axis Ax side) than the side portions 30B, 30C, 30D, and 30E of the water tank 30.
  • the stirring unit 34 is superimposed on the stationary blade unit 32 when viewed from the vertical direction (Z direction), and is disposed on the central axis Ax in the present embodiment.
  • the stirring unit 34 includes a rotating shaft portion 54 and a stirring blade 56.
  • the rotating shaft portion 54 is a shaft-like member that extends along the Z direction from the upper side of the water tank 30 in the vertical direction (Z1 direction side) to the inside of the water tank 30.
  • the rotation shaft portion 54 has an axis superimposed on the center axis Ax, and is rotated by the control unit 42 with the center axis Ax as the rotation axis.
  • the stirring blade 56 is attached to the tip of the rotating shaft portion 54 on the Z2 direction side and is located in the water tank 30.
  • the stirring blade 56 extends radially outward from the tip of the rotating shaft portion 54 with respect to the central axis Ax.
  • the stirring blade 56 is composed of a plurality of plate-like members extending radially outward from the tip of the rotating shaft portion 54.
  • the stirring blade 56 rotates with the rotation of the rotating shaft portion 54.
  • the agitating unit 34 agitates the raw water W ⁇ b> 1 in the water tank 30 by rotating the agitating blade 56 by the rotation of the rotating shaft portion 54.
  • the shape of the stirring unit 34 is arbitrary as long as the raw water W1 can be stirred. That is, the shape of the stirring blade 56 is arbitrary as long as it is a structure that generates a water flow in the raw water W1 by rotating.
  • the radially outer end of the stirring blade 56 is radially outward of the plate portion 50 of the stationary blade portion 32 when viewed in the vertical direction (when viewed from the Z direction). It extends to the same position as the end of the.
  • the positional relationship between the stirring blade 56 and the plate portion 50 is not limited to this, and the stirring blade 56 may extend outward in the radial direction from the plate portion 50, and the plate portion 50 is in the radial direction from the stirring blade 56. It may extend to the outside.
  • the inflow pipe 36 is a pipe connected to the landing well 12 and the water tank 30. As shown in FIGS. 2 and 3, the inflow pipe 36 has an inflow port 36 ⁇ / b> A that is an opening connected to the water tank 30, more specifically, a side portion 30 ⁇ / b> C of the water tank 30. That is, the inflow port 36 ⁇ / b> A is provided on the X2 direction side of the stirring unit 34 and the stationary blade unit 32.
  • the inflow port 36A is located on the Z1 direction side of the side portion 30C, and more specifically, is located on the Z1 direction side (vertical upper side) with respect to the stationary blade portion 32 and the stirring blade 56.
  • the inflow port 36A is an opening portion of the inflow pipe 36 that opens to the side portion 30C.
  • the inflow pipe 36 allows the raw water W1 from the landing well 12 to flow into the water tank 30 from the inflow port 36A.
  • the inflow port 36A is provided on the X2 direction side of the agitating unit 34 and the stationary blade unit 32 and allows the raw water W1 to flow into the water tank 30, the opening of the inflow pipe 36 that opens to the side 30C. It does not have to be a part.
  • the inflow port 36A may be opened at a position closer to the X2 direction than the stirring portion 34 of the side portion 30D or the side portion 30E.
  • the inflow port 36A is, for example, vertically above the water tank 30 (Z1 direction side) and is located on the X2 direction side from the stirring unit 34, and the raw water W1 enters the water tank 30 from above the water tank 30 in the vertical direction. May be allowed to flow down.
  • the inflow pipe 36 is connected to the flow rate adjusting unit 36B.
  • the flow rate adjusting unit 36 ⁇ / b> B adjusts the flow rate of the raw water W ⁇ b> 1 flowing into the water tank 30 from the inflow pipe 36.
  • the flow rate adjusting unit 36 ⁇ / b> B is, for example, an on-off valve, and adjusts the flow rate of the raw water W ⁇ b> 1 that flows into the water tank 30 by being controlled to open and close by the control unit 42.
  • the stirring device 14 does not necessarily have to be provided with the flow rate adjusting unit 36B.
  • the outflow pipe 38 is a pipe connected to the water tank 30 and the flock growth tank 16. As shown in FIGS. 2 and 3, the outflow pipe 38 has an outlet 38 ⁇ / b> A that is an opening connected to the water tank 30, more specifically, a side portion 30 ⁇ / b> B of the water tank 30. That is, the outlet 38 ⁇ / b> A is provided on the X1 direction side from the stirring unit 34 and the stationary blade unit 32. In addition, the outlet 38A is located on the Z1 direction side of the side portion 30B, and more specifically, is located on the Z1 direction side (vertical upper side) of the stationary blade portion 32 and the stirring blade 56.
  • the outflow pipe 38 allows the added water W2, which is the raw water W1 in which the additive P is stirred in the water tank 30, to flow into the outside of the water tank 30 (the floc growth tank 16) at the outlet 38A.
  • the outflow port 38A is an opening of the outflow pipe 38 that opens to the side 30B.
  • the outflow port 38A is not an opening portion of the outflow pipe 38 that opens to the side portion 30B as long as the outflow port 38A is provided on the side portion 30B on the X1 direction side of the stirring portion 34 and allows the added water W2 to flow out. May be.
  • the outflow port 38A is a groove provided on the end surface on the X1 direction side of the side portion 30B, and the added water W2 in the water tank 30 may flow out from this groove to the outside.
  • the end surface on the X1 direction side of the side portion 30B is made lower than the other side portions (side portions 30C, 30D, and 30E), and the X1 direction side of the end surface on the X1 direction side of the side portion 30B is used as the outlet 38A.
  • the added water W2 may be discharged to the outside by an overflow method.
  • the inflow port 36A is provided on the X2 direction side with respect to the stirring unit 34 and the stationary blade unit 32, and the outflow port 38A is provided on the X1 direction side with respect to the stirring unit 34 and the stationary blade unit 32.
  • the inflow port 36A is provided on the opposite side (X2 direction) to the direction from the stirring unit 34 to the outlet 38A (X1 direction) rather than the stirring unit 34.
  • the outlet 38A is provided on the opposite side (X1 direction) to the direction from the stirring part 34 to the inlet 36A (X2 direction) rather than the stirring part 34.
  • the inflow port 36A and the outflow port 38A are provided radially outward from the stirring unit 34 and the stationary blade unit 32, and the inflow port 36A flows more than the stirring unit 34 and the stationary blade unit 32. It can be said that it is provided outside in the radial direction opposite to the outlet 38A.
  • the additive adding unit 40 adds the additive P into the water tank 30.
  • the additive addition unit 40 has an addition port 60 opened, and the additive P is added into the water tank 30 from the addition port 60.
  • the additive P is a flocculant. That is, the additive P is a chemical that agglomerates fine solid particles contained in the raw water W1, and is a liquid chemical in this embodiment.
  • the additive P is, for example, PAC (Polyaluminum chloride polyaluminum chloride), but is not limited thereto.
  • the additive addition unit 40 adds the additive P to the water tank 30 as a stock solution.
  • the additive P may be added to the water tank 30 in a state where the additive P is diluted by adding water to the additive P.
  • the water for dilution may be any water such as raw water W1 and water W5.
  • the additive P is not limited to the flocculant, and may be any substance as long as it can modify the raw water W1 by dispersing the raw water W1.
  • the additive P may be, for example, a flocculant in a flocculent mixing tank before dewatering of sewage sludge.
  • the additive P may be activated carbon or activated charcoal slurry in an activated carbon dissolution tank before injecting a clean water process, or may be pulverized coal slurry in a pulverized coal storage tank.
  • the addition port 60 is provided at the addition position S.
  • the addition position S is a position vertically above the water surface WA of the raw water W1 in the water tank 30 (on the Z1 direction side), and is located in a region where the water tank 30 is projected along the Z direction. Further, the addition position S is a position vertically above the water tank 30 (Z1 direction side).
  • the addition position S is a position on the opposite side of the stirring section 34 and the side related to the outlet 38 ⁇ / b> A in the water tank 30.
  • an imaginary line passing through the center of the stirring unit 34 and along a direction orthogonal to the direction toward the center of the outlet 38 ⁇ / b> A is defined as an imaginary line K.
  • the side relating to the outlet 38A in the water tank 30 is the space area on the side where the outlet 38A exists in the two space areas when the inside of the water tank 30 is divided by the virtual line K (in FIG. 3). This is the area where no dots are attached.
  • the addition position S is located on the opposite side to the space area where the outflow port 38A exists with the stirring unit 34 interposed therebetween (area where dots are attached in FIG. 3).
  • the side relating to the outlet 38 ⁇ / b> A in the water tank 30 is a region in the water tank 30 on the X1 direction side from the virtual line K.
  • the addition position S is a region in the water tank 30 on the X2 direction side from the virtual line K.
  • the addition position S is a position where the distance L1 is longer than the distance L2 in the direction from the stirring unit 34 toward the outlet 38A (here, the X1 direction).
  • the distance L1 is a distance from the addition position S to the outlet 38A in the direction from the stirring unit 34 toward the outlet 38A (here, the X1 direction).
  • the distance L2 is a distance from the addition position S to the center of the stirring unit 34 (center axis Ax) in the direction (here, the X1 direction) from the stirring unit 34 to the outlet 38A. Since the addition position S is a position where the distance L1 is longer than the distance L2, the addition position S is located on the side opposite to the outlet 38A as viewed from the stirring unit 34.
  • the addition position S is located on the X2 direction side (the opposite direction side to the direction from the stirring unit 34 toward the outlet 38A) with respect to the center (center axis Ax) of the stirring unit 34. Moreover, the addition position S is located on the direction side (X1 direction side) from the stirring unit 34 toward the outlet 38 ⁇ / b> A rather than the side portion 30 ⁇ / b> C of the water tank 30. That is, the addition position S is a position closer to the X2 direction than the center (central axis Ax) of the stirring unit 34 and closer to the Z1 direction than the water tank 30.
  • the addition position S is a position where the distance L1 is longer than the distance L3 in the direction from the stirring unit 34 to the outlet 38A (here, the X1 direction).
  • the distance L3 is a distance from the addition position S in the direction from the stirring unit 34 toward the outlet 38A (here, the X1 direction) to the radially outer end 56A of the stirring blade 56.
  • the end portion 56A is the end portion of the stirring blade 56 closest to the X2 direction. That is, the addition position S is located on the X2 direction side (the opposite direction side to the direction from the stirring unit 34 toward the outlet port 38A) with respect to the end 56A of the stirring blade 56.
  • the addition position S is arranged so that the stirring unit 34 is located between the addition position S and the outlet 38A.
  • the addition position S is defined by the positional relationship with the stirring unit 34, but can also be defined by the positional relationship with the stationary blade unit 32. That is, the addition position S is a position on the opposite side of the side relating to the outlet 38 ⁇ / b> A in the water tank 30 and the stationary blade portion 32. In this case, it can be said that the virtual line K is a line that also passes through the center of the stationary blade portion 32. Therefore, it can be said that the addition position S is located on the opposite side of the stationary blade portion 32 with respect to the space region on the side where the outflow port 38A exists.
  • the addition position S is a distance from the addition position S to the outlet 38A in the direction from the stationary blade part 32 toward the outlet 38A (here, the X1 direction). It can also be said that the position is longer than the distance to the center of 32 (center axis Ax). That is, the addition position S is located on the X2 direction side with respect to the center (center axis Ax) of the stationary blade portion 32. Further, the addition position S is a distance from the addition position S to the outlet 38A in the radial direction of the stationary blade part 32 in the direction from the stationary blade part 32 toward the outlet 38A (here, the X1 direction). It can also be said that the position is longer than the distance to the end 51 of the.
  • the end portion 51 is the end portion on the most X2 direction side among the plate portions 50. Therefore, it can be said that the addition position S is located on the X2 direction side (the opposite direction side to the direction from the stationary blade portion 32 toward the outlet port 38A) with respect to the end portion 51 of the stationary blade portion 32. Thus, the addition position S is arranged so that the stationary blade portion 32 is located between the addition position S and the outlet port 38A.
  • the addition position S is located in the addition region T1, as shown in FIG.
  • the addition region T1 is the X2 direction (the opposite direction to the direction from the stationary blade portion 32 toward the outlet 38A) of the central axis Ax that is the rotation center of the stirring portion 34 (the stationary blade portion 32) in the region in the water tank 30.
  • This is the side area. That is, the addition region T1 is a region closer to the X2 direction than the central axis Ax and closer to the X1 direction (a direction from the stationary blade portion 32 toward the outlet 38A) than the side portion 30C of the water tank 30.
  • the addition position S is more preferably located in the addition region T2.
  • the addition region T2 is a region on the X2 direction side of the end portion 56A of the stirring blade 56 (the end portion 51 of the stationary blade portion 32) in the region in the water tank 30. That is, the addition region T2 is a region closer to the X2 direction than the end portion 56A of the stirring blade 56 (the end portion 51 of the stationary blade portion 32) and closer to the X1 direction than the side portion 30C of the water tank 30.
  • the addition region T2 is included in the addition region T1.
  • the addition regions T1 and T2 are not distinguished from each other, they are referred to as an addition region T.
  • the addition position S may be anywhere within the addition region T as long as it is within the addition region T, but is preferably located in the vicinity of the side portion 30C. That is, in the addition position S, the distance to the side portion 30C along the X direction is greater than the distance to the central axis Ax along the X direction and the distances to the end portions 56A and 51 along the X direction. Short is preferable.
  • the addition region T is a region on the X1 direction side from the side portion 30C where the inflow port 36A is opened. Therefore, the addition position S is located on the X1 direction side with respect to the inlet 36A, and is located between the inlet 36A and the agitating part 34 (or between the inlet 36A and the stationary blade part 32). It can also be said.
  • the position of the addition port 60 (addition position S) is fixed.
  • the additive addition unit 40 is controlled by the control unit 42.
  • the position S) may be movable to another position.
  • the control unit 42 moves the addition port 60 (addition position S) to another position according to the stirring speed of the stirring unit 34, the flow rate of the raw water W1, and the like.
  • the control unit 42 moves the addition port 60 (addition position S) within the region of the addition region T.
  • FIG. 4 are schematic diagrams for explaining the operation of the stirring device according to the first embodiment.
  • the control unit 42 controls the flow rate adjustment unit 36 ⁇ / b> B, so that the raw water W ⁇ b> 1 flows into the water tank 30 through the inflow pipe 36.
  • the control part 42 continues making the raw
  • the control unit 42 controls the inflow amount of the raw water W1 so that the residence time of the raw water W1 in the water tank 30, that is, the time during which the raw water W1 stays in the water tank 30 is a predetermined time (for example, 1 minute or more and 5 minutes or less). adjust. Since the raw water W1 flows into the water tank 30 from the inlet 36A and flows out from the outlet 38A, the residence time can be set based on the capacity of the water tank 30 and the inflow amount of the raw water W1.
  • operations such as stirring by the stirring device 14 are started after sufficient raw water W1 is accumulated in the water tank 30. Even during the stirring operation, the inflow of the raw water W1 is continuously performed, and therefore the inflow and outflow of the raw water W1 are continued. That is, the stirring device 14 adds the additive P at the additive adding unit 40 while stirring the stirring unit 34 while the added water W2 is flowing out from the water tank 30 while the raw water W1 flows into the water tank 30. is doing.
  • the control unit 42 operates the stirring unit 34 and rotates the stirring unit 34 while flowing the raw water W1 into the water tank 30.
  • the ascending water flow F1 is a water flow of the raw water W1 generated on the radially inner side (center axis Ax side) in the water tank 30.
  • the rising water flow F1 is a water flow that spirals in the Z1 direction from the stationary blade portion 32 toward the stirring portion 34 (stirring blade 56).
  • the descending water flow F2 is a water flow of the raw
  • the descending water flow F ⁇ b> 2 is a water flow that flows along the periphery of the stirring unit 34 (stirring blade 56) on the radially outer side of the stirring unit 34 (stirring blade 56).
  • the lower precipitation stream F ⁇ b> 2 flows around the stirring unit 34. Further, the descending water flow F ⁇ b> 2 moves toward the Z ⁇ b> 2 direction toward the periphery of the stationary blade portion 32 while flowing around the stirring portion 34.
  • the descending water flow F ⁇ b> 2 flows along the periphery of the agitating unit 34, and descends spirally downward in the vertical direction (Z2 direction) toward the stationary blade unit 32.
  • the descending water flow F2 reaches the stationary blade portion 32, the water flow is changed to the rising water flow F1 by the stationary blade portion 32.
  • the raw water W1 that has reached the stirring section 34 (stirring blade 56) by the rising water flow F1 is circulated by descending to the periphery of the stationary blade section 32 by the falling water flow F2.
  • the raw water W1 is agitated by the rising water flow F1 and the falling water flow F2.
  • a part of the lower precipitation stream F2 in the vicinity of the outlet 38A is branched and flows out from the outlet 38A as an effluent water stream F3.
  • the control unit 42 causes the additive addition unit 40 to add the additive P from the addition position S into the water tank 30.
  • the additive P flowing down from the addition position S into the water tank 30 is added to the raw water W ⁇ b> 1 in the water tank 30.
  • the addition position S is located near the outlet 38A, the additive P may be caught in the effluent water stream F3 and discharged to the outside before being sufficiently dispersed by the descending water stream F2.
  • the addition position S is provided on the X2 direction side of the stirring unit 34, that is, at a location away from the outflow port 38A.
  • the additive P flowing down from the addition position S into the water tank 30 is sufficiently mixed and dispersed by the descending water flow F2 before being discharged to the outside by the outflow water flow F3. Further, the descending water flow F ⁇ b> 2 is generated radially outward from the stirring blade 56. Therefore, when the addition position S is located radially outside the addition region T2, that is, the stirring blade 56, the additive P is more appropriately involved in the descending water flow F2, and thus more appropriately in the raw water W1. Distributed.
  • the addition position S is located in the addition region T1 or the addition region T2 on the X2 direction side of the stirring unit 34.
  • the addition position S is a position vertically above the water tank 30 (Z1 direction side), is a position radially outside the stirring section 34 (the stationary blade section 32), and has an outlet 38A.
  • it may be a position upstream of the predetermined angle ⁇ 1 or more in the flow of the descending water flow F2 along the periphery of the stirring unit 34.
  • the predetermined angle ⁇ 1 is 90 degrees, but is more preferably 180 degrees or more and 270 degrees or less.
  • the addition position S may be located on the X1 direction side of the stirring portion 34 as long as it is upstream by a predetermined angle ⁇ 1 or more in the flow along the periphery of the stirring portion 34 of the descending water flow F2. Even in this case, the addition position S is located at a position (upstream side) sufficiently away from the outlet 38A with respect to the flow of the descending water flow F2. Therefore, the additive P is appropriately caught in the descending water flow F2 and dispersed in the raw water W1.
  • the addition position S may be located in the addition region T3.
  • a straight line connecting the central axis Ax to the outlet 38A is defined as a line B.
  • a straight line connecting the central axis Ax to a predetermined position on the side of the water tank 30 is a line C.
  • the line C is inclined with respect to the line B by a predetermined angle ⁇ 1 (90 degrees here) in the upstream direction of the flow of the descending water flow F2. Accordingly, the line C indicates a position upstream of the line B by a predetermined angle ⁇ 1 (here, 90 degrees) of the flow of the descending water flow F2.
  • the addition region T3 is a region on the upstream side of the flow of the descending water flow F2 from the line C in the region in the water tank 30.
  • the addition region T3 is a region from the line C to the line B in the direction opposite to the flow of the descending water flow F2 in the region in the water tank 30, and from the line C to the flow direction of the descending water flow F2.
  • This is an area excluding the area up to the line B.
  • the line B is a line connecting the center axis Ax to the center of the outlet 38A, but may be a line connecting the center axis Ax to the end 38A1 of the outlet 38A.
  • the end 38A1 is an end on the upstream side of the flow of the lower precipitation stream F2 of the outlet 38A, and in the example of FIG. 5, is an end on the Y1 direction side of the outlet 38A.
  • the descending water flow F2 is clockwise, but the flowing direction of the descending water flow F2 is determined by the rotation direction of the stirring unit 34, and may be, for example, counterclockwise.
  • the addition region T3 is an end portion on the radially outer side of the stirring blade 56 (or an end on the radially outer side of the plate portion 50 of the stationary blade portion 32) in the upstream region of the flow of the descending water flow F2 from the line C. It is preferable that it is a region outside in the radial direction from the (part).
  • the additive P can be more appropriately involved in the descending water flow F2 by setting the outer side in the radial direction than the end portion on the outer side in the radial direction of the stirring blade 56 as the addition region T3.
  • the addition region T3 does not include a region from the line D to the line B (a region from the line D to the line B in the opposite direction of the downward water flow F2).
  • the line D is a line connecting the central axis Ax to the end 38A2 of the outlet 38A.
  • the end 38A2 is an end on the downstream side of the flow of the lower precipitation stream F2 of the outlet 38A.
  • the end 38A2 is an end on the Y2 direction side of the outlet 38A. That is, the region from the line B to the line D is a region that overlaps the outlet 38A when viewed from the X direction in the region on the X1 direction side from the central axis Ax.
  • addition region T3 is also referred to as the addition region T when not distinguished from the addition regions T1 and T2.
  • FIG. 6 is a schematic diagram showing another example of the outlet.
  • the agitation device 14 may cause the added water W2 to flow out to the outside by an overflow method.
  • FIG. 6 shows the case of this overflow method.
  • the outlet 38A is the entire region on the Z1 direction side of the side portion 30B.
  • the line B1 is a line connecting the central axis Ax to the end 38A1 of the outlet 38A
  • the line C1 is a predetermined angle ⁇ 1 (90 in the upstream direction of the flow of the descending water flow F2 with respect to the line B1. It becomes a line inclined by (degree).
  • the line D1 is a line connecting the central axis Ax to the end 38A2 of the outlet 38A.
  • the addition region T3 is preferably a region from the line C1 to the line D1 in the direction opposite to the flow of the descending water flow F2 in the region in the water tank 30.
  • FIG. 7 is a schematic diagram showing another example of the addition position.
  • the addition position S is provided in the addition region T2 and in the vicinity of the inflow port 36A.
  • the addition position S is in the addition region T3 and is less than the position where the inflow port 36A is provided, with respect to the flow of the descending water flow F2 along the periphery of the stirring portion 34. It may be upstream.
  • the position where the inflow port 36A is provided is upstream from the outflow port 38A and downstream from the addition position S in the flow of the descending water flow F2 along the periphery of the stirring portion 34. Also good.
  • the additive P added from the addition position S is entrained in the descending water flow F2, and then mixed with the raw water W1 flowing in from the inflow port 36A. Therefore, by providing the inflow port 36A at such a position, the additive P can be more appropriately mixed and dispersed in the raw water W1.
  • the stirring device 14 includes the water tank 30, the stationary blade part 32, the stirring part 34, the outlet 38 ⁇ / b> A, and the additive addition part 40.
  • Raw water W1 (liquid) flows into the water tank 30.
  • the stationary blade portion 32 is provided on the bottom surface 30A of the water tank 30, and a plurality of plate-like members (plate portions 50) extend in the radial direction.
  • the stirring unit 34 is provided above the stationary blade unit 32 in the vertical direction (Z1 direction side), and stirs the raw water W1 (liquid) in the water tank 30.
  • 38 A of outflow ports are provided in the side part 30B of the water tank 30, and make the addition water W2 (liquid) in the water tank 30 flow out outside.
  • the additive addition unit 40 adds the additive P into the water tank 30 from the addition position S.
  • the addition position S is a position vertically above (Z1 direction side) the water surface WA of the raw water W1 (liquid) in the water tank 30 and sandwiches the stirring portion 34 with the side related to the outlet 38A in the water tank 30. The position on the opposite side.
  • this stirring device 14 Since this stirring device 14 has the stationary blade portion 32 and the stirring portion 34, when the stirring portion 34 is operated, the rising water flow F1 and the falling water flow F2 are generated in the water tank 30. And the stirring apparatus 14 adds the additive P by the additive addition part 40 to the addition position S, ie, the X2 direction side rather than the center of the stirring part 34. FIG. Since the stirring device 14 adds the additive P to a place away from the outlet 38A, the additive P is sufficiently mixed and dispersed by the descending water flow F2 before being discharged to the outside by the effluent water flow F3. . Moreover, since the addition position S is above the water tank 30 in the vertical direction, the addition port 60 is located outside the raw water W1.
  • this stirring device 14 can suppress clogging of the addition port 60, and even when clogged, the stirrer 14 can confirm that it is easily clogged and can eliminate clogging. Therefore, according to this stirring device 14, it can suppress that additive P cannot be added.
  • the additive P can be appropriately added to the raw water W1, and the additive P can be appropriately dispersed in the raw water W1.
  • the addition position S is such that the distance from the stationary blade portion 32 to the outlet 38A is greater than the distance to the center of the stationary blade portion 32 in the direction from the stationary blade portion 32 toward the outlet 38A (here, the X1 direction). Is also provided at a longer position. Therefore, the stirring device 14 can add the additive P to a place away from the outlet 38A and appropriately disperse the additive P in the raw water W1.
  • the stirring unit 34 includes a rotatable rotating shaft portion 54 and a stirring blade 56 attached to the rotating shaft portion 54 and extending radially outward from the rotating shaft portion 54.
  • the agitating unit 34 agitates the raw water W ⁇ b> 1 (liquid) in the water tank 30 by rotating the agitating blade 56 with the rotation of the rotating shaft portion 54.
  • the addition position S is such that the distance L1 to the outlet 38A is longer than the distance to the outer end 56A in the radial direction of the stirring blade 56 in the direction from the stirring portion 34 toward the outlet 38A (here, the X1 direction). Is the position.
  • the stirring device 14 is provided with the addition position S on the radially outer side than the outer periphery of the stirring blade 56.
  • a descending water flow F ⁇ b> 2 is generated on the radially outer side of the outer periphery of the stirring blade 56. Therefore, the stirring device 14 adds the additive P to the place where the descending water flow F2 is generated, and appropriately entrains the additive P in the descending water flow F2, thereby appropriately adding the additive P into the raw water W1. Can be dispersed.
  • the stirring device 14 further has an inflow port 36A.
  • the inflow port 36 ⁇ / b> A is provided in the side portion 30 ⁇ / b> C of the water tank 30 on the opposite side (X2 direction) direction (X1 direction) from the stirring unit 34 toward the outflow port 38 ⁇ / b> A, and feeds the raw water W ⁇ b> 1 (liquid) into the water tank 30.
  • the addition position S is located between the inflow port 36 ⁇ / b> A and the stirring unit 34. By adding the additive P from the addition position S, the stirring device 14 can appropriately disperse the additive P in the raw water W1.
  • the stirring unit 34 generates the rising water flow F1 and the falling water flow F2 by stirring the raw water W1 (liquid) in the water tank 30.
  • the rising water flow F1 rises spirally upward in the vertical direction (Z1 direction) from the stationary blade portion 32 toward the stirring portion 34.
  • the lower precipitation stream F2 flows along the periphery of the stirring unit 34 and descends spirally downward in the vertical direction (Z2 direction) toward the stationary blade unit 32.
  • the stirring unit 34 disperses the additive P in the raw water W1 (liquid) by entraining the additive P added from the addition position S in the descending water flow F2.
  • the stirrer 14 can appropriately disperse the additive P in the raw water W1 by entraining the additive P in the descending water flow F2.
  • the stirring device 14 includes a water tank 30, a stationary blade part 32, a stirring part 34, an outlet port 38A, and an additive agent adding part 40.
  • the agitating unit 34 agitates the raw water W1 (liquid) in the water tank 30 to generate an ascending water flow F1 and a descending water flow F2.
  • the rising water flow F1 rises spirally upward in the vertical direction (Z1 direction) from the stationary blade portion 32 toward the stirring portion 34.
  • the lower precipitation stream F2 flows along the periphery of the stirring unit 34 and descends spirally downward in the vertical direction (Z2 direction) toward the stationary blade unit 32.
  • the addition position S is a position in the vertical direction upper side (Z1 direction side) than the water surface WA of the raw water W1 (liquid) in the water tank 30, is a position radially outward from the stirring unit 34, and The upstream position of 180 degrees or more and 270 degrees or less in the flow along the periphery of the stirring portion 34 of the descending water flow F2 from the outlet 38A.
  • the addition position S is arranged at a position (upstream side) sufficiently separated from the outlet 38A with respect to the flow of the descending water flow F2. Therefore, the stirring device 14 can appropriately entrain the additive P in the descending water flow F2 and appropriately disperse the additive P in the raw water W1.
  • the stirring device 14 further has an inlet 36A for allowing the raw water W1 (liquid) to flow into the water tank 30.
  • the inflow port 36A is provided upstream of the outflow port 38A and downstream of the addition position S in the flow of the descending water flow F2 along the periphery of the stirring unit 34.
  • the stirring device 14 can mix and disperse the additive P in the raw water W1 more appropriately by providing the inlet 36A at such a position.
  • the water treatment system 100 is a water treatment system for clean water having a stirring device 14. Since this water treatment system 100 has the stirring device 14, when performing water treatment of clean water, it is possible to appropriately mix and disperse the additive P with low power.
  • the inflow port 36A is provided on the upper side in the vertical direction (Z1 direction side) of the water tank 30, but in the second embodiment, the inflow port 36Aa is on the lower side in the vertical direction of the water tank 30. (Z2 direction side).
  • description of portions having the same configuration as that of the first embodiment is omitted.
  • FIG. 8 is a schematic diagram of a stirring device according to the second embodiment.
  • the stirring device 14a according to the second embodiment includes a water tank 30a, an inflow pipe 36a, a partition wall 70, an opening 72, and a shielding part 74.
  • inflow pipe 36a inflow port 36Aa is located in the Z2 direction side of side 30Ca of water tank 30a. More specifically, in the second embodiment, the inflow port 36Aa is opened to the Z2 direction side with respect to the stationary blade part 32 and the stirring part 34.
  • the partition wall 70 is a wall-shaped (plate-shaped) member provided in the water tank 30a.
  • the partition wall portion 70 is provided closer to the Z1 direction than the bottom surface 30Aa of the water tank 30a, and overlaps the bottom surface 30Aa when viewed from the direction along the Z direction.
  • the partition part 70 is provided in the Z2 direction side from the outflow port 38A, and is provided in the Z1 direction side from the inflow port 36A.
  • the partition wall 70 divides the inside of the water tank 30a into a stirring space A1 and an inflow space A2.
  • the stirring space A1 is a space on the side where the outflow port 38A inside the water tank 30a is provided, and is a space on the Z1 direction side of the partition wall portion 70.
  • the inflow space A2 is a space closer to the Z2 direction than the stirring space A1 and provided with the inflow port 36A, and is a space on the Z2 direction side of the partition wall portion 70.
  • an opening 72 is opened in the partition wall 70.
  • the opening 72 penetrates from the surface of the partition wall portion 70 on the stirring space A1 side (Z1 direction side) to the surface of the partition wall portion 70 on the inflow space A2 side (Z2 direction side). Therefore, the opening 72 communicates the stirring space A1 and the inflow space A2.
  • the stirring space A1 is isolated from the inflow space A2 in the region where the partition wall 70 is provided, and communicates with the inflow space A2 in the region where the opening 72 is opened.
  • the opening 72 is a circular hole in the present embodiment, but the shape is not limited to this and is arbitrary.
  • the shielding part 74 is a plate-like member provided in the stirring space A1 and provided on the Z1 direction side of the opening 72.
  • the shielding part 74 is supported by the support part 80.
  • the support portion 80 is a shaft-like member extending in the Z1 direction from the end portion to the tip portion.
  • the support portion 80 has a distal end portion that is the surface of the partition wall portion 70 and is disposed around the opening 72.
  • a plurality of support portions 80 are provided along the periphery of the opening 72. No member is provided between the support portions 80. That is, the space between the support portions 80 is open.
  • the shielding part 74 is attached to the tip part of the support part 80.
  • the shielding part 74 is located on the Z1 direction side with respect to the opening part 72, and is provided so as to overlap the opening part 72 when viewed from the direction along the Z direction. More specifically, the shielding portion 74 overlaps the entire area of the opening 72 as viewed from the direction along the Z direction. That is, the shielding part 74 covers the entire area of the opening 72 on the Z1 direction side.
  • the shielding part 74 forms a communication space A3 between the opening part 72 and the shielding part 74.
  • the communication space A3 is a part of the stirring space A1, the Z1 direction side is shielded by the shielding part 74, and the Z2 direction side communicates with the opening 72.
  • a part of the area around the side of the communication space A3 is shielded by the support part 80, but the area between the support parts 80 is open. That is, the communication space A3 shields the inflow space A2 and the agitation space A1 with the shielding part 74, and the inflow space A2 and the agitation space A1 between the opening 72 and the region around the side of the communication space A3. Communicate.
  • the raw water W1 from the inflow port 36Aa flows into the inflow space A2.
  • the raw water W1 that has flowed into the inflow space A2 flows into the communication space A3 from the opening 72, and flows into the stirring space A1 from a region around the side of the communication space A3.
  • the ascending water flow F1 and the descending water flow F2 are generated by the agitating unit 34.
  • the additive P is added from the addition position S of the same position as 1st Embodiment in stirring space A1. Therefore, the additive P is appropriately mixed and dispersed in the raw water W1 in the stirring space A1 as in the first embodiment.
  • the stirrer 14a has the additive P as in the first embodiment even when the inflow port 36Aa is provided on the lower side in the vertical direction (Z1 direction side) of the water tank 30a.
  • a partition wall 70, an opening 72, and a shielding part 74 are provided, and the water tank 30a is divided into a stirring space A1 and an inflow space A2.
  • the stirring device 14a does not necessarily need to provide the partition part 70, the opening part 72, and the shielding part 74, and does not necessarily divide the inside of the water tank 30a into the stirring space A1 and the inflow space A2.
  • the stationary blade portion 32 is provided on the bottom surface 30Aa as in the first embodiment.
  • the stirring device 14b according to the third embodiment is different from the first embodiment in that the additive addition unit 40b has a plurality of addition ports 60b.
  • description of portions having the same configuration as that of the first embodiment is omitted.
  • FIG. 9 is a schematic diagram of a stirring device according to the third embodiment.
  • the stirring device 14b has an additive addition part 40b.
  • the additive addition part 40b has a cylindrical part 90 and an addition port 60b.
  • the cylindrical portion 90 is a cylindrical member that is disposed vertically above the water tank 30 (Z1 direction), and is disposed at a position that overlaps the water tank 30 when viewed from the Z direction.
  • the cylinder part 90 is a hollow member, and the additive P is stored in the inside.
  • the addition port 60b is an opening provided in the cylindrical portion 90, and communicates the inside of the cylindrical portion 90 to the outside.
  • the addition port 60b opens to the Z2 direction side of the cylindrical portion 90.
  • a plurality of addition ports 60b are provided in the cylindrical portion 90.
  • the additive addition part 40b causes the additive P inside the cylinder part 90 to flow down into the water tank 30 from each addition port 60b.
  • Each addition port 60b is provided at the addition position S as in the first embodiment. That is, in the third embodiment, the additive P is added from a plurality of addition positions S.
  • the addition position S in the third embodiment is disposed in the same region (addition region T) as in the first embodiment.
  • the additive P since the additive P is added from the some addition position S, the additive P can be disperse
  • the cylinder part 90 is a long-axis-shaped cylindrical member, and it arrange
  • a plurality of addition ports 60 b are provided along the long axis direction of the cylindrical portion 90. Therefore, the addition ports 60b are arranged along the Y direction.
  • the addition port 60b is located in a line with the Y direction at the X2 direction side rather than the stirring part 34.
  • the addition ports 60b are arranged along the flow of the descending water flow F2, and the additive P can be more appropriately dispersed in the raw water W1.
  • the shape of the cylindrical portion 90 and the arrangement of the addition ports 60b are not limited to this and are arbitrary.
  • the cylinder part 90 may be arrange
  • the addition port 60b is arranged along the flow of the descending water flow F2 (along the X direction) on the upstream side of the descending water flow F2.
  • the additive addition part 40b has the cylindrical part 90 and the addition port 60b.
  • the cylinder part 90 is arrange
  • a plurality of addition ports 60b are provided in the cylindrical portion 90.
  • the additive addition part 40b adds the additive P in the cylinder part 90 into the water tank 30 from the plurality of addition ports 60b. Since this stirring device 14b adds the additive P from a plurality of addition positions S, the additive P can be more appropriately dispersed in the raw water W1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Pour ajouter de manière appropriée un additif et disperser de manière appropriée l'additif dans un fluide. Un dispositif d'agitation (14) comprend : un réservoir d'eau (30) dans lequel s'écoule un fluide; une partie d'ailette de stator (32) disposée sur la surface inférieure (30A) du réservoir d'eau (30), la partie d'ailette de stator (32) étant telle qu'une pluralité d'éléments en forme de plaque s'étendent radialement; une partie d'agitation (34) disposée à une position verticalement au-dessus de la partie d'ailette de stator (32), la partie d'agitation (34) agitant le fluide à l'intérieur du réservoir d'eau (30); une sortie (38A) disposée sur une partie latérale (30B) du réservoir d'eau (30), la sortie (38A) permettant au fluide à l'intérieur du réservoir d'eau (30) de s'écouler vers l'extérieur; et une partie d'ajout d'additif (40) qui ajoute un additif (P) dans le réservoir d'eau (30) à partir d'une position d'addition (S) qui est verticalement au-dessus de la surface d'eau (WA) du fluide à l'intérieur du réservoir d'eau (30), la position d'addition (S) étant située sur le côté opposé au côté où la sortie (38A) est disposée à l'intérieur du réservoir d'eau (30) à travers la partie d'agitation (34).
PCT/JP2018/016365 2017-04-21 2018-04-20 Dispositif d'agitation et système de traitement d'eau WO2018194175A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2002058908A (ja) * 2000-08-22 2002-02-26 Nishihara Environ Sanit Res Corp 凝集沈殿処理装置
JP2003038946A (ja) * 2001-07-31 2003-02-12 Masahiro Sato 撹拌装置及びこれを利用した浄水システム
JP2003144895A (ja) * 2001-11-12 2003-05-20 Japan Organo Co Ltd 水処理薬剤溶解装置
JP2010514554A (ja) * 2006-12-29 2010-05-06 オテヴェ・ソシエテ・アノニム バラスト混入フロキュレーションおよび沈降によって水を処理する方法およびプラント
JP2013086055A (ja) * 2011-10-20 2013-05-13 Satake Chemical Equipment Mfg Ltd 吸着分離装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002058908A (ja) * 2000-08-22 2002-02-26 Nishihara Environ Sanit Res Corp 凝集沈殿処理装置
JP2003038946A (ja) * 2001-07-31 2003-02-12 Masahiro Sato 撹拌装置及びこれを利用した浄水システム
JP2003144895A (ja) * 2001-11-12 2003-05-20 Japan Organo Co Ltd 水処理薬剤溶解装置
JP2010514554A (ja) * 2006-12-29 2010-05-06 オテヴェ・ソシエテ・アノニム バラスト混入フロキュレーションおよび沈降によって水を処理する方法およびプラント
JP2013086055A (ja) * 2011-10-20 2013-05-13 Satake Chemical Equipment Mfg Ltd 吸着分離装置

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