JP2007098217A - Method for generating ultrafine ionized air bubble, generation apparatus and apparatus for treating raw water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for generating an ultrafine ionized air bubble capable of purifying a large amount of treated water by generating the ultrafine ionized air bubble continuously and in a large amount in raw water to be purified with a simple structure, a generation apparatus, and an apparatus for treating the raw water using the generation apparatus. <P>SOLUTION: The method for generating the ultrafine ionized air bubble by injecting high-pressure water into the flow of the raw water to be treated comprises a first high-pressure water injection hole having a predetermined angle to the flow of the raw water to be treated and also placed in a plural number along the outer periphery of the flow of the raw water to be treated, and a second high-pressure water injection hole placed on the downstream of the first high-pressure water injection hole, having a predetermined angle to the flow of the raw water to be treated and also placed in a plural number along the outer periphery of the flow of the raw water to be treated, wherein the high-pressure water is directly injected into the raw water to be treated from the plurality of first high-pressure water injection holes and second high-pressure water injection holes to generate the ultrafine ionized air bubble in the raw water to be treated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method and apparatus for generating ultrafine ionized bubbles, and a raw water treatment apparatus using the generator, and more particularly, ultrafine having internal pressure and charge by combining high-pressure water jetting and application of a high magnetic field. The present invention relates to a method and apparatus for generating ionized bubbles and a raw water treatment apparatus using the generator.

  In recent years, ultra-fine ionized bubbles (hereinafter also referred to as “nanobubbles”) are considered to have high internal pressure and high surface activity that can be effectively used for purification of polluted water, application to living bodies, or chemical reactions. For example, Patent Documents 1 and 2 propose a nanobubble generation method and generation apparatus, and further a nanobubble utilization method and apparatus.

  The nanobubble generation method proposed in Patent Documents 1 and 2 is a combination of an electrolyzer and an ultrasonic generator, and more specifically, oxygen and ozone bubbles generated by the electrolyzer are electrolyzed. It is crushed by ultrasonic vibration from an ultrasonic generator provided at the bottom of the substrate, refined, and generates nanobubbles.

JP 2003-334548 A JP 2004-121962 A

However, in order to generate a large amount of nanobubbles with the conventional nanobubble generator, it is necessary to increase the size of the electrolysis apparatus and the ultrasonic generator, which complicates the entire apparatus and consumes power. As a result, the cost of generating nanobubbles becomes very high. Further, these devices cannot be expected to have a long service life (life), and are not preferable from the viewpoint of running cost. Therefore, it cannot be said that the above-mentioned conventional apparatus is suitable for continuously purifying a large amount of waste water of about 100,000 m ³ / day as a treatment amount.

  On the other hand, in recent years, purification of a large amount of wastewater has been demanded in various fields, but especially in cargo ships and tankers, seawater loaded to maintain drafts when empty is loaded at foreign destinations. In the case of disposal at seawater, this seawater purification process is required. In this case, of course, it is desirable that the processing amount per time is large.

  In view of the above problems, an object of the present invention is to generate ultrafine ionized bubbles with a simple structure continuously and in large quantities in raw water to be purified, and to purify a large amount of treated water. An object of the present invention is to provide an ionized bubble generating method, a generating apparatus, and a raw water treatment apparatus using the generating apparatus.

  In order to achieve the above object, an ultrafine ionized bubble generating method of the present invention is a method of generating ultrafine ionized bubbles by injecting high-pressure water into a flow of raw water to be treated, which is to be treated. A plurality of first high-pressure water injection holes that have a predetermined angle with respect to the raw water flow and are arranged along the outer periphery of the raw water flow to be treated, and downstream of the first high-pressure water injection holes And a plurality of second high-pressure water injection holes disposed at a predetermined angle with respect to the raw water flow to be treated and arranged along the outer periphery of the raw water flow to be treated. The high-pressure water is directly injected from the first plurality of high-pressure water injection holes and the second plurality of injection holes into the raw water to be treated, and ultrafine ionized bubbles are injected into the raw water to be treated. It is characterized by generating.

  In addition, another ultrafine ionized bubble generation method of the present invention includes a high-pressure water jet pipe having a predetermined angle with respect to the raw water flow to be processed, at least along the outer periphery of the raw water flow to be processed. One or more are arranged, and a mixing device that sucks and mixes fluid under atmospheric pressure by jetting high-pressure water from a nozzle is arranged upstream of the high-pressure water jet pipe, and ultrafine ionized bubbles are generated by the suction mixing. The high-pressure water containing the generated ultrafine ionized bubbles is directly jetted from the jet pipe into the raw water to be treated to generate ultrafine ionized bubbles in the raw water to be treated.

  Furthermore, the high-pressure injector as the ultrafine ionized bubble generating device of the present invention is a water injection pipe through which raw water to be treated flows, and has a predetermined angle with respect to the flow of raw water to be treated. A plurality of first high-pressure water injection holes arranged along the outer periphery of the water pipe, arranged downstream of the first high-pressure water injection holes, and having a predetermined angle with respect to the raw water flow to be treated; A water injection pipe including at least a plurality of second high-pressure water injection holes arranged along the outer periphery of the water injection pipe, and an outer pipe arranged concentrically with the water injection pipe and forming a space between the water injection pipe The space is divided into a first chamber and a second chamber communicating with the first high-pressure water injection hole and the second high-pressure water injection hole, respectively.

  The high pressure nozzle / injector as another ultrafine ionized bubble generator of the present invention is an injection pipe through which raw water to be treated flows, and has a predetermined angle with respect to the flow of raw water to be treated. An injection pipe having at least one high-pressure water injection pipe, and a mixing device that is arranged upstream of the high-pressure water injection pipe and sucks and mixes fluid under atmospheric pressure by injecting high-pressure water from a nozzle, High-pressure water having ultrafine ionized bubbles generated in a mixing device is directly jetted from the jet pipe into raw water to be treated.

  Furthermore, the raw water treatment apparatus of the present invention is characterized in that a high magnetic field generator is further combined with the high pressure injector and the high pressure nozzle / injector. The raw water treatment apparatus of the present invention may include a hydrogen peroxide generator.

  The ultrafine ionized bubble generating method according to the present invention can directly generate ultrafine ionized bubbles in raw water to be purified continuously and in large quantities by providing the above configuration.

  In addition, the ultrafine ionized bubble generator has a structure that can directly generate ultrafine ionized bubbles in raw water to be purified continuously and in large quantities, and thus has a simple structure and a long service life. The length can be increased, and the initial cost and running cost can be kept low.

  The raw water treatment apparatus according to the present invention can further promote the activation of the ultrafine ionized bubbles by combining the ultrafine ionized bubble generating apparatus with a high magnetic field generating apparatus.

  The raw water treatment apparatus according to the present invention is further combined with a hydrogen peroxide generator to improve the purification efficiency of the raw water.

  The raw water treatment apparatus of the present invention is suitable for purification treatment of raw water that requires continuous and large-scale treatment.

  Hereinafter, it will be described in detail with reference to FIGS. 1 to 10 according to embodiments of the present invention.

  FIG. 1 is a schematic perspective view of a raw water treatment apparatus using an ultrafine ionized bubble generator according to an embodiment of the present invention. FIG. 2 is a schematic front view of the raw water treatment apparatus of FIG. FIG. 3 is a schematic system diagram for explaining the raw water purification method by the raw water treatment apparatus of FIG. 1. FIG. 4 is a schematic cross-sectional view along the fluid flow direction of a high-pressure injector as an ultrafine ionized bubble generator used in the raw water treatment apparatus of FIG. FIG. 5 is a schematic cross-sectional view taken along the line VV in FIG. 4 and shows a state in which high-pressure water is injected into raw water to be purified. FIG. 6 is a cross-sectional view taken along the line VV in FIG. 4 as in FIG. 4 and shows a state where the apparatus itself is being cleaned. 7A and 7B are diagrams for explaining the formation state of the flow channel in the state shown in FIGS. 5 and 6. FIG. 7A shows the formation of the flow channel in the state of FIG. 6, and FIG. The formation of the flow path in the state is shown. FIG. 8 is a schematic cross-sectional view along the fluid flow direction of a high-pressure nozzle / injector as an ultrafine ionized bubble generating device. FIG. 9 is a schematic cross-sectional view along the fluid flow direction of the high magnetic field generator. FIG. 10 is a schematic cross-sectional view along the fluid flow direction of the hydrogen peroxide generator.

  As shown in FIGS. 1 to 3, the raw water treatment apparatus 1 using the ultrafine ionized bubble generator according to the present embodiment basically includes a high pressure injector 2 and a high pressure nozzle as an ultrafine ionized bubble generator. A high magnetic field generator 6 that promotes the activation of the injector 4 and the generated ultrafine ionized bubbles (nanobubbles) is provided.

  The high-pressure injector 2 is generated by directly injecting high-pressure water having a pressure of about 4 to about 35 MPa into raw water to be treated which has been pumped at a pressure of about 0.2 to about 0.6 MPa. It is an apparatus that generates ultrafine ionized bubbles using cavitation.

  The high-pressure injector 2 according to this embodiment is shown in detail in FIGS. The high-pressure injector 2 generally has a high-strength water injection pipe (for example, a high-pressure high-density polyethylene or a composite pipe containing SiC) 20 through which raw water to be treated flows, and contacts the outer surface of the water injection pipe 20 in a circumferential direction. A movable relay pipe 22 and an outer pipe 27 which covers the relay pipe 22 and forms chambers 25a and 25b outside the relay pipe 22 are included.

  The water injection pipe 20 has a first injection hole communicating with the first chamber 25a through the first passage 23a of the relay pipe 22 on the upstream side (left side in FIG. 4) and downstream side (right side in FIG. 4). A second injection hole 21b communicating with the second chamber 25b through the second passage 23b of the relay pipe 22a and 21a is formed. The first injection hole 21a on the upstream side is opened such that the inclination angle formed with respect to the center line of the water injection pipe 20 toward the downstream forms an acute angle (preferably about 45 degrees), and the second injection on the downstream side. The hole 21b is opened so as to be substantially orthogonal to the center line. As clearly shown in FIG. 5, the first injection holes 21 a are arranged at equal intervals in the circumferential direction, and a plurality of first injection holes 21 a are provided so as to face each other in the circumferential direction. Similarly, a plurality of second injection holes 21b are arranged at equal intervals and are provided to face each other. The number of the first injection holes 21a and the second injection holes 21b is preferably the same, but is not limited thereto. Further, in the present embodiment, each of the first injection holes 21a and the second injection holes 21b is eight holes, but the present invention is not limited to this. It may be. Furthermore, the first injection hole 21a and the second injection hole 21b may be shifted in the circumferential direction. Further, in this embodiment, the first injection holes 21a and the second injection holes 21b are formed in only one row each on the upstream side communicating with the chamber 25a and on the downstream side communicating with the chamber 25b. It may be formed in a plurality of rows. The water injection pipe 20 communicates with other devices constituting the ultrafine ionized bubble generation processing apparatus 1 according to the present embodiment via the pipe 8. Moreover, the diameter of the 1st injection hole 21a and the 2nd injection hole 21b is suitably set between about 0.3 to about 2 mm according to the quantity and water quality of the raw | natural water which should be processed.

Cavitation is generated in the pipe 20 by directly injecting high-pressure water to the raw water flowing in the water injection pipe 20 from the first injection hole 21a and the second injection hole 21b formed and arranged in this way. A large amount of bubbles are generated and the gas-liquid interface is ionized. The ionized bubbles contain hydrogen ions (H ⁺ ) and hydroxide ions (OH ⁻ ). Furthermore, the bubbles are made finer by colliding with the bubbles in which the high pressure water injected from the injection holes arranged opposite to each other and the injection holes arranged in the front and rear are collided, or the high pressure water and the bubbles collide with each other. And activated. The pressure of the high-pressure water is appropriately set within a range of about 4 to about 35 MPa in accordance with the amount of raw water to be treated, the quality of the raw water, and the like.

  Further, in this embodiment, the injection hole is formed toward the center of the normal direction as shown in FIG. 5, but the plurality of injection holes are angled in the same direction with respect to the normal line. It may be formed. By comprising in this way, the eddy current by high pressure water is formed and the spreading | diffusion of the bubble which generate | occur | produces by cavitation is accelerated | stimulated.

  As described above, the relay pipe 22 is disposed concentrically so that the inner surface of the relay pipe 22 is in contact with the outer surface of the water injection pipe 20, and the second position shown in FIG. 6 from the first position shown in FIG. 5. A predetermined angle (about 3 to 8 degrees) is provided around the water injection pipe 20 to a position. The relay pipe 22 is made of high-pressure high-density polyethylene containing ceramics. When the relay pipe 22 is in the first position, the relay pipe 22 has a first passage 23a that connects the first injection hole 21a on the upstream side of the water injection pipe 20 to the first chamber 25a and a downstream side. A second passage 23b is formed to communicate the second injection hole 21b with the second chamber 25b. When the relay pipe 22 is in the first position, the first passage 23a is aligned with the first injection hole 21a, and the second passage 23b is aligned with the second injection hole 21b. Each is formed.

  The relay pipe 22 is further formed with a groove 24 on the inner peripheral surface thereof for communicating the first passage 23a and the second passage 23b. The groove 24 is used when washing the pipes and equipment arranged upstream of the passages 23a and 23b when the relay pipe 22 is in the second position. That is, when the relay pipe 22 is rotated from the first position to the second position, as shown in FIG. 6, the first injection hole 21a, the first passage 23a, and the second injection hole 21b. The second passage 23b is displaced in the circumferential direction, thereby disconnecting the communication state. Therefore, for example, the fluid from the first passage 23a flows through the second passage 23b, backflows piping and equipment arranged upstream of the second passage 23b, and backwashing them. Become. Similarly, piping and equipment disposed upstream of the first passage 23a can be back-washed with the fluid from the second passage 23b. When the relay pipe 22 is in the first position, as shown in FIGS. 5 and 7B, the first passage 23a and the second passage 23b are respectively connected to the first injection hole 21a and the second injection passage 21a. Since the two injection holes 21 b communicate with each other, the high pressure water in the chambers 25 a and 25 b can be ejected into the water injection pipe 20 without being affected by the presence of the groove 24.

  In this embodiment, the relay pipe 22 is provided, but the relay pipe 22 may be omitted.

  As shown in FIG. 4, the outer pipe 27 made of stainless steel is disposed concentrically with the injection pipe 20, is closed at the upstream side and the downstream side, and is interposed between the injection pipe 20 and the relay pipe 22. A space is formed. The space is divided by a partition wall 26 and forms a first chamber 25a on the upstream side and a second chamber 25b on the downstream side. The first chamber 25a and the second chamber 25b communicate with the high-pressure pump 13 via the valves 28a and 28b and the high-pressure branching device 14 (see FIGS. 1 and 2). By comprising in this way, high pressure water can be injected independently from the 1st injection hole 21a and the 2nd injection hole 21b, respectively. In other words, it is possible to independently adjust and control the pressure and the amount of high-pressure water ejected from the first injection hole 21a and the second injection hole 21b.

  In the present embodiment, the outer tube 27 is formed integrally with the relay tube 22 via the partition wall 26 and is formed to be rotatable like the relay tube 22. The outer tube 27 is provided with a handle 27 a for rotating the outer tube 27 and the relay tube 22. However, the present invention is not limited to this configuration. For example, a slit is provided in the outer tube 27 in the circumferential direction, and a handle protrudes through the partition wall 26 integrated with the relay tube 22 through the slit. You may make it rotate. Further, as described above, when the relay pipe 22 is omitted, it will be understood that the outer pipe 27 need not be rotated, and the handle 27a can be omitted. 4 to 6, reference numerals 29a and 29b denote drain pipes for draining water.

  Next, the high-pressure nozzle / injector 4 is an apparatus that generates ultrafine ionized bubbles by utilizing cavitation generated by directly injecting high-pressure water into raw water to be treated, like the high-pressure injector 2.

  The high-pressure nozzle / injector 4 according to this embodiment is shown in detail in FIG. The high-pressure nozzle / injector 4 generally includes an injection pipe 40 through which raw water to be treated flows, an injection pipe 42 fixed to the injection pipe 40, and a mixing device 50.

  The high-pressure nozzle / injector 4 is greatly different from the high-pressure injector 2 in that the high-pressure water and the fluid having a substantially normal pressure (about 0.1 MPa) are mixed in advance by the mixing device 50. .

  The mixing device 50 has a nozzle 51 that ejects high-pressure water. The nozzle 51 in this embodiment is a ceramic ball type nozzle in which an injection passage 52 having a diameter of about 0.3 to about 0.7 mm is formed, and the outside is reinforced with stainless steel. The mixing device 50 further includes a flow path 53 formed so as to surround the periphery of the nozzle 51 and a mixing chamber 54 formed in front of the nozzle 51, and is entirely formed of stainless steel. The upstream of the nozzle 51 of the mixing device 50 is connected to the high-pressure pump 13 via a filter 46, a valve and a high-pressure branch device 14 formed of a 0.3 mesh stainless steel net (see FIGS. 1 and 2). The upstream of the flow path 53 is connected to the water supply tank 11 via the filter 48, the valve 47, and the water branching device 15 (see FIGS. 1 and 2).

  When the mixing device 50 is configured in this way, when high-pressure water is ejected from the nozzle 51, a fluid under normal pressure, that is, atmospheric pressure (water in the present embodiment) is sucked through the flow path 53, The high pressure water and the fluid are mixed in the mixing chamber 54. At this time, cavitation is vigorously generated in the mixing chamber 54 and, like the high-pressure injector 2, a large amount of ultrafine bubbles in which the gas-liquid interface is ionized are generated.

  In the present embodiment, the injection pipe 42 has one end at an opening opened on the outer peripheral wall of the injection pipe 40 via the fixing fitting 41 so as to be orthogonal to the injection pipe 40 made of high-pressure high-density polyethylene. Is attached. The other end of the injection pipe 42 is connected to the mixing device 50 via an appropriate pipe joint. The injection pipe 42 is made of ceramics and is reinforced with stainless steel on the outside, and the diameter of the passage through which high-pressure water passes is preferably set to about 0.3 to about 2 mm.

  In this embodiment, the injection pipe 42 is attached in a direction orthogonal to the center line of the injection pipe 40, but like the first injection hole 21a of the high-pressure injector 2, the injection pipe 42 is directed downstream. It may be attached so as to form an acute angle with respect to the 40 center line. Further, a plurality of nozzles may be arranged as in the ejection holes 21a, or may be attached with a slight inclination with respect to the normal direction of the injection tube 40.

  From the injection pipe 42, high-pressure water containing bubbles ionized by the mixing device 50 is injected into the raw water in the injection pipe 40, thereby generating cavitation again and generating a large amount of ionized ultrafine bubbles. Let

  In the high-pressure nozzle / injector 4 of the present embodiment, water is used as the normal pressure fluid sucked in the mixing device 50. However, the sucked fluid may be raw water to be treated, and the details of the treatment. A solution in which oxygen or a drug is dissolved may be used.

  Next, the high magnetic field generator 6 is a device that increases the activity of the nanobubbles by applying a magnetic field to the raw water to be treated to destroy and subdivide the water molecule clusters.

  FIG. 9 shows details of the high magnetic field generator 6 in this embodiment. In the high magnetic field generator 6, one or two high magnetic devices having a magnetic field residual magnetic flux density of 7000 to 24000 Gauss are arranged along the direction of raw water flow. In this embodiment, two permanent magnets are used and arranged at a predetermined interval.

  The high magnetic field generator 6 in this embodiment generally includes a water pipe 60, a first permanent magnet 62, and a second permanent magnet 64.

  The water pipe 60 is made of high-pressure high-density polyethylene, the inlet portion 61 and the outlet portion 69 are cylindrical tubes, and a flat rectangular tube having a rectangular cross section in the portion where the permanent magnets 62 and 64 are disposed. 63. A first permanent magnet 62 is disposed on the upstream side, and a second permanent magnet 64 is disposed on the downstream side at a predetermined interval. Further, as shown in FIG. 9, the upstream first permanent magnet 62 has an N pole on the upper side of the water pipe 60 and an S pole on the lower side, and the downstream permanent magnet 64 has a water pipe. Are arranged so that the upper side is the S pole and the lower side is the N pole. The arrangement of the N pole and the S pole is not limited to this embodiment, and may be reversed. In short, it is only necessary that the first permanent magnet and the second permanent magnet are arranged at an interval, and the directions of the magnetic fields generated by the first permanent magnet and the second permanent magnet are reversed. The reason for this structure is that since the flow is a vortex in the raw water flowing into the high magnetic field generator 6, a magnetic field is applied in the same direction to the rotating raw water flow, and thereby water molecules It becomes possible to promote subdivision of the clusters. In this embodiment, a permanent magnet is used, but a magnetic field may be generated by an electromagnet.

  As shown in FIG. 9, the water pipe 60 and the first and second permanent magnets 62 and 64 are shielded by a magnetic leakage prevention member 66 and covered by a protective pipe 68. The protective tube 68 is also preferably formed of a material that shields magnetism (for example, SUS404).

  The raw water treatment apparatus 1 using the ultrafine ionized bubble generating apparatus according to the present embodiment is configured in the raw water to be treated by appropriately combining the high pressure injector 2, the high pressure nozzle / injector 4 and the high magnetic field generator 6 described above. The nanobubbles can be directly generated in the water to purify and sterilize the raw water to be treated.

  In this embodiment, the raw water treatment apparatus 1 using the ultrafine ionized bubble generation apparatus further includes a hydrogen peroxide generation apparatus 3. The hydrogen peroxide generator 3 is an apparatus for generating a larger amount of hydrogen ions (H +) and hydroxide ions (OH−).

  FIG. 10 shows details of the hydrogen peroxide generator 3. As shown in FIG. 10, the hydrogen peroxide generator 3 in this embodiment generally includes a water pipe 30 through which a fluid flows and a plurality of ceramic rings 33.

  The water flow pipe 30 is a high-pressure high-density polyethylene pipe, and its outer periphery is protected by a stainless steel pipe 31.

  A plurality of ceramic rings 33 are arranged in the water pipe 30 in parallel with each other at an appropriate distance from the water pipe 30. The plurality of ceramic rings 33 are fixed to a cross-girder-like support member 35 via four long-axis bolts 34 and a plurality of nuts 36, and are arranged in the water conduit 30.

  Each of the ceramic rings 33 is a donut-shaped plate body in which a water passage through hole 33 a is formed at the center, and is disposed so as to be orthogonal to the center line of the water passage 30. The ceramic ring 33 is, for example, a ceramic molded body obtained by firing a mixture of barium carbonate, titanium oxide and aluminum oxide at a temperature in the range of about 1000 ° C. to about 1500 ° C. using clay as a binder (for details, see (See JP-A-8-217421).

  When a plurality of ceramic rings 33 are arranged in the water pipe 30 and the pressurized water passes through the water pipe 30, a turbulent flow of the pressurized water is generated in the water pipe 30 and hydrogen peroxide can be generated. Therefore, the hydrogen peroxide generator 3 is preferably arranged downstream of the high-pressure injector 2, the high-pressure nozzle / injector 4, the high-pressure pump 13, and the like, as shown in FIGS. Note that the hydrogen peroxide generator 3 is not necessarily provided.

  The operation of the raw water treatment apparatus 1 using the ultrafine ionized bubble generating apparatus according to this embodiment including the above-described apparatuses will be described with reference to FIGS.

  The raw water to be treated in this embodiment is seawater. Seawater that has been pumped by a pump or the like through the pipe 8 passes through the high-pressure injector 2, thereby generating nanobubbles in the seawater and starting purification. Next, the seawater passes through the hydrogen peroxide generator 3, the high-pressure nozzle / injector 4 and the high-pressure injector 2 ', so that hydrogen peroxide and nanobubbles are added to develop seawater purification and sterilization processes. Subsequently, the seawater passes through the high magnetic field generator 6 to increase the activity of the nanobubbles, further purifies and sterilizes the seawater, and finally passes through the high-pressure nozzle / injector 4 ′. Complete the cleaning and sterilization process.

  The tap water from the supply source is dechlorinated by the purifier 10 and stored in the water supply tank 11.

  The water supplied from the water supply tank 11 through the first branch pipe 82 is supplied to the high-pressure pump 13 through the membrane filtration device 12 and converted into high-pressure water. The high-pressure water is supplied to the high-pressure injectors 2, 2 'and the high-pressure nozzles / injectors 4, 4' via the hydrogen peroxide generator 3 'and the high-pressure water branching devices 14, 14'. On the other hand, the water supplied from the water supply tank 11 through the second branch pipe 84 is sent to the high-pressure nozzle / injectors 4, 4 ′ via the water branch device 15.

  In FIGS. 1 and 2, 7 is a valve, 9 is a bypass pipe, 16 is a control panel, 81 is a water level adjusting ball tap, 83 is a high pressure pump pressure adjusting return pipe, and 85 is an inspection lid. , 87 are high-pressure pump drive motors, and 89 is a pressure gauge.

  Hereinafter, the Example of the ultrafine ionization bubble generation processing apparatus whose raw | natural water which should be processed is seawater is shown. In this example, in the ultrafine ionized bubble generation processing apparatus 1 (see FIGS. 2 and 3) according to the above embodiment, the high pressure injector 2, the high pressure nozzle / injector 4 and the high magnetic field generator 6 as the ultrafine ionized bubble generation apparatus. The seawater was treated by an ultrafine ionized bubble generating treatment device from which the high pressure injector 2 ′, the high pressure nozzle / injector 4 ′ and the hydrogen peroxide generators 3, 3 ′ were removed. Moreover, in the present Example, the seawater after a process is not processed at all by chemical precipitation or filtration.

(Implementation conditions)
Water pump (for raw water) Three-phase AC power supply 200V 5.5kw / 50Hz
Discharge amount 500L / min Lifting height 55m (0.55MPa; 5.5atm)
High-pressure pump (for high-pressure water) Three-phase AC power supply 200V 1.5kw / 50Hz
Discharge amount 6L / min Lifting height 600m (6MPa; 60atm)
Seawater water pipe inner diameter φ30mm
High-pressure injector 1st injection hole Number 5 (circumferential direction 72 degrees interval) Inclination angle 45 degrees
Second injection hole Number 5 (circumferential direction 72 degrees interval) Inclination angle 90 degrees
Inner diameter of each injection hole φ0.5mm
High-pressure nozzle / injector Number of injection pipes 3 (circumferential 120 degree intervals)
Inclination angle 45 degrees
Inner diameter of injection tube φ0.5mm

(Results of water quality analysis of raw water and treated water)
Analysis name Raw water Treated water Hydrogen ion concentration (16 ° C) (pH) 7.6 8.3
Dissolved oxygen (mg / L) 4.4 7.4
Biochemical oxygen demand (mg / L) 1 Less than 1 Chemical oxygen demand (mg / L) 3.2 0.8
E. coli group number (units / L) 37 Not detected E. coli number (MPN / 100 mL) 1,700 Less than 2 Total nitrogen (mg / L) 2.3 2.1
Total phosphorus (mg / L) 0.19 0.11
General bacteria (mg / L) 880 Not detected Oil (visual confirmation result) Dropped on the surface of raw water immediately after treatment and 24:00
Even after the oil film was evenly spread, it was not confirmed that the oil film had been confirmed, and the treated water was stored after disposal. No oil was found on the tank wall.

(Evaluation of the above results)
1. It can be judged that the effect of cavitation has an effect of increasing the hydrogen ion concentration by 0.7.
2. It can be judged that the increase in the dissolved oxygen concentration of 3.0 mg / L is also effective due to cavitation.
3. Both values of biochemical oxygen demand and chemical oxygen demand decreased.
4). The number of coliforms was not detected, and the number of coliforms had a sterilization effect of 99.9% or more. 5. Total nitrogen and total phosphorus also decreased.
6). General bacteria also had a sterilization effect of 99.9% or more.
7). About oil, 30 drops of sewing oil was dripped on the surface of 20 liters (L) of raw water (seawater) pumped into a water storage tank, and when it was processed, as described above, disappearance of the oil was confirmed visually.

  In the embodiment of the present invention, the raw water to be treated is seawater, but the raw water targeted by the ultrafine ionized bubble generation processing apparatus of the present invention is not limited to this, and any fluid can be used. Is also applicable.

It is a schematic perspective view of the raw | natural water processing apparatus using the ultrafine ionization bubble generator which concerns on the embodiment of this invention. It is a schematic front view of the raw | natural water processing apparatus of FIG. It is a schematic system diagram for demonstrating the purification method of raw | natural water by the raw | natural water processing apparatus of FIG. It is a schematic sectional drawing in alignment with the flow direction of the fluid of the high voltage | pressure injector as an ultrafine ionization bubble generator used for the raw | natural water processing apparatus of FIG. It is a schematic sectional drawing in alignment with the VV line | wire of FIG. 4, and shows the state in which the high pressure water is injected in the raw water which should be purified. It is sectional drawing which follows the VV line of FIG. 4 similarly to FIG. 4, and shows the state which is cleaning the apparatus itself. FIGS. 7A and 7B are diagrams for explaining a flow channel formation state in the state shown in FIGS. 5 and 6, wherein FIG. 5A shows the flow channel formation in the state of FIG. 6, and FIG. The formation of the flow path is shown. It is a schematic sectional drawing in alignment with the flow direction of the fluid of the high pressure nozzle injector as an ultrafine ionization bubble generator. It is a schematic sectional drawing in alignment with the flow direction of the fluid of a high magnetic field generator. It is a schematic sectional drawing in alignment with the flow direction of the fluid of a hydrogen peroxide generator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Raw water processing device 2, 2 'High pressure injector 3, 3' Hydrogen peroxide generator 4, 4 'High pressure nozzle injector 6 High magnetic field generator 11 Water supply tank 12 Membrane filtration device 13 High pressure pump 14, 14' High pressure water branching device 15 Water branching device

Claims (10)

An ultrafine ionized bubble generation method in which high pressure water is injected into a raw water stream to be treated to generate ultrafine ionized bubbles,
A plurality of first high-pressure water injection holes that have a predetermined angle with respect to the flow of raw water to be treated and are arranged along the outer periphery of the flow of raw water to be treated, and the first high pressure Second high-pressure water that is disposed downstream of the water injection hole, has a predetermined angle with respect to the raw water flow to be treated, and is disposed in plural along the outer periphery of the raw water flow to be treated. Including at least an injection hole,
High-pressure water is directly jetted from the first plurality of high-pressure water injection holes and the second plurality of high-pressure water injection holes into the raw water to be treated, and ultrafine ionized bubbles are to be treated. A method of generating ultrafine ionized bubbles, characterized by comprising:   2. The method of generating ultrafine ionized bubbles according to claim 1, wherein the high-pressure water injection hole has a predetermined angle with respect to a flow of raw water to be treated being different for each row. An ultrafine ionized bubble generation method in which high pressure water is injected into a raw water stream to be treated to generate ultrafine ionized bubbles,
At least one high-pressure water jet pipe having a predetermined angle with respect to the raw water flow to be treated is disposed along the outer periphery of the raw water flow to be treated;
A mixing device that sucks and mixes fluid under atmospheric pressure by spraying high-pressure water from a nozzle upstream of the high-pressure water spray pipe, generates ultrafine ionized bubbles by the suction mixing,
Ultra-fine ionization characterized in that high-pressure water containing generated ultra-fine ionized bubbles is directly jetted from the jet pipe into the raw water to be treated to generate ultra-fine ionized bubbles in the raw water to be treated. Bubble generation method. A water injection pipe through which raw water to be treated flows, having a predetermined angle with respect to the flow of raw water to be treated, and a plurality of first high-pressure water injection holes arranged along the outer periphery of the water injection pipe The second high-pressure water disposed downstream of the first high-pressure water injection hole, having a predetermined angle with respect to the flow of the raw water to be treated, and a plurality of second high-pressure water disposed along the outer periphery of the water injection pipe A water injection pipe including at least an injection hole;
An outer pipe arranged concentrically with the water injection pipe and forming a space between the water injection pipe,
With
The high-pressure injector is characterized in that the space is divided into a first chamber and a second chamber communicating with the first high-pressure water injection hole and the second high-pressure water injection hole, respectively.   5. The high-pressure injector according to claim 4, wherein the first high-pressure water injection hole and the second high-pressure water injection hole have different predetermined angles with respect to a flow of raw water to be treated. Further, a relay pipe concentrically with respect to the water injection pipe and having an inner peripheral surface thereof in contact with the outer peripheral surface of the water injection pipe and further rotatably attached to the water injection pipe from the first position to the second position. Prepared,
The relay pipe communicates the first passage and the second passage with the first passage communicating with the first chamber, the second passage communicating with the second chamber, and the inner peripheral surface of the relay pipe. Groove to be formed,
When the relay pipe is in the first position, the first passage communicates with the first injection hole, the second passage communicates with the second injection hole, and the relay pipe is in the second position. 6. The high-pressure injector according to claim 4, wherein communication between the first passage and the first injection hole and communication between the second passage and the second injection hole are interrupted. . An injection pipe through which the raw water to be treated flows, the injection pipe having at least one high-pressure water injection pipe having a predetermined angle with respect to the flow of the raw water to be treated;
A mixing device that is arranged upstream of the high-pressure water injection pipe and sucks and mixes fluid under atmospheric pressure by injecting high-pressure water from a nozzle;
With
A high-pressure nozzle / injector characterized by directly injecting high-pressure water having ultrafine ionized bubbles generated in the mixing device into raw water to be treated from the injection pipe. At least the high pressure injector according to claim 4 and the high pressure nozzle injector according to claim 8,
Furthermore, a high magnetic field generator is provided that applies a high magnetic field to the raw water to be treated containing ultrafine ionized bubbles and activates the ultrafine ionized bubbles.
A raw water treatment apparatus for purifying and sterilizing raw water to be treated.   The raw water treatment apparatus according to claim 8, further comprising a hydrogen peroxide generator. The raw water treatment apparatus according to claim 8 or 9, wherein the raw water to be treated is seawater.

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