JP2011056498A - Apparatus and system for generating high-concentration dissolved water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for generating high-concentration dissolved water capable of obtaining the high-concentration dissolved water by securing sufficient contact for dissolving gas in raw water and also suppressing enlargement of the apparatus, and a system for generating the high-concentration dissolved water. <P>SOLUTION: The apparatus for generating the high-concentration dissolved water 60 includes: a cylindrical gas-liquid contact tank 63 from which dissolved water generated by bringing fine air bubbles into contact with the raw water introduced from an inlet 631a is removed from an outlet 634a; an air bubble generator 64 for generating the fine air bubbles into the gas-liquid contact tank 63; a dissolved water pipe 651 to be a circulation passage one end of which is connected to the top of the gas-liquid contact tank 63, another end of which is connected to the bottom and to which the dissolved water in the gas-liquid contact tank 63 flows; and a circulating pump 652 provided on the dissolved water pipe 651 and circulating the dissolved water in the gas-liquid contact tank. The raw water brought into contact with the fine air bubbles from the air bubble generator 64 in the gas-liquid contact tank 63 is made into the high-concentration dissolved water by orbiting around the dissolved water pipe 651 with the circulating pump 652 to repeat circulation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a high-concentration dissolved water generation apparatus and a high-concentration dissolved water generation system that can efficiently dissolve gas in raw water to generate high-concentration dissolved water.

  An apparatus for dissolving a gas in a liquid is required to dissolve efficiently. In particular, in a water purification system aimed at purification of clean water and sewage, ozone gas is brought into contact with raw water and dissolved to achieve sterilization, decolorization, and deodorization. As such a water purification system, for example, those described in Patent Documents 1 and 2 are known.

  In the purification supply method and the purification supply system of Patent Document 1, raw water mixed with ozone gas is provided substantially horizontally just below the nozzle from a nozzle provided in the direction perpendicular to the water surface near the ceiling of the dissolution tank. An ozone treatment device is described in which spraying and hitting a baffle plate generates a lot of splashes and dissolves ozone gas in raw water.

  In addition, in the separate injection type ozone contact method of Patent Document 2, raw water is introduced from the inlet at the top of the reaction tank by a water pump, and ozone gas generated by the ozone generator is simultaneously passed through a diffuser to make fine bubbles. Injecting into the reaction tank, bubbles (ozone gas) are mixed with the raw water to form mixed water. The mixed water flows down the dissolution zone of the reaction tank, passes through the bottom of the reaction tank, passes through the ascending section, and is discharged into the outlet. A descending dissolution type ozone treatment device distributed as treated water for purifying from is described.

JP 2007-181801 A JP-A-8-192176

  In order to obtain the desired dissolved water, it is desirable to bring the gas to be dissolved into contact with the raw water for as long as possible. In particular, since ozone gas has poor solubility, it is necessary to dissolve it in contact with raw water as much as possible in order to obtain a high concentration.

  However, in the ozone treatment apparatus described in Patent Document 1, since the ozone water is dissolved in the raw water simply by striking the raw water mixed with the ozone gas from the nozzle against the baffle plate and generating splashes, the ozone gas and the raw water It is estimated that high-concentration dissolved water is difficult to obtain.

Further, in the descending dissolution type ozone treatment apparatus described in Patent Document 2, the mixed water in which ozone gas is mixed with raw water flows down to the descending dissolution part of the reaction tank and rises through the bottom part of the reaction tank and rises the ascending part. However, since it is a contact period between raw water and ozone gas, it cannot be said that it is sufficient, and it seems difficult to obtain high-concentration dissolved water.
For example, it is conceivable to increase the time for the mixed water to pass through the descending dissolution part and the ascending part by increasing the depth of the reaction tank. However, there is a possibility that the scale of the apparatus increases due to the increase in the reaction tank.

  Accordingly, the present invention provides a high-concentration dissolved water generator capable of obtaining a high-concentration dissolved water by ensuring sufficient contact for the gas to dissolve in raw water, and capable of suppressing an increase in the size of the device. An object is to provide a high-concentration dissolved water generation system.

The high-concentration dissolved water generating apparatus of the present invention includes a cylindrical gas-liquid contact tank in which dissolved water generated by bringing fine bubbles into contact with raw water taken from an inlet is taken out from an outlet, and the gas-liquid A bubble generating device for generating fine bubbles to the contact tank, a one end connected to the upper part of the gas-liquid contact tank, the other end connected to the lower part, and a circulation path through which dissolved water in the gas-liquid contact tank flows. And a circulation pump provided in the circulation path for circulating the dissolved water in the gas-liquid contact tank.
The high-concentration dissolved water generating apparatus of the present invention generates dissolved water by allowing fine bubbles generated by the bubble generating apparatus to come into contact with raw water taken from the inlet of the gas-liquid contact tank, and removes it from the outlet. It can be done. This dissolved water is circulated through the gas-liquid contact tank through a circulation path by a circulation pump. Therefore, every time the raw water circulates, it comes into contact with the fine bubbles from the bubble generating device, so that a sufficient contact time can be ensured. Therefore, every time it circulates, fine bubbles dissolve in the raw water and the concentration can be gradually increased, so that a high concentration of dissolved water can be obtained.

  The circulation pump preferably feeds dissolved water from the upper part to the lower part of the gas-liquid contact tank, or feeds dissolved water from the lower part to the upper part of the gas-liquid contact tank. In the case of counter flow in which the circulating pump feeds dissolved water from the upper part to the lower part of the gas-liquid contact tank, the rising speed of the fine bubbles can be reduced, so the contact period between the fine bubbles and the raw water is lengthened. be able to. In addition, in the case of cocurrent flow in which the circulating pump sends dissolved water from the lower part to the upper part of the gas-liquid contact tank, when the diameter of the fine bubbles is on the order of millimeters, the interval between the fine bubbles is increased, Bonding between fine bubbles can be suppressed.

The dissolved water inlet connected to the other end of the circulation path is preferably arranged so that the water flow flows along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank.
The water flow containing fine bubbles from the dissolved water inlet flows in the same direction along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank at the lower part of the gas-liquid contact tank. A swirling flow around the shaft center is generated at the bottom. The swirling flow spreads to the upper part with time and becomes a large swirling flow as a whole inside the gas-liquid contact tank. The microbubbles swirl along with the swirling flow along the inner peripheral surface of the gas-liquid contact tank. However, the fine bubbles gradually become dense in the vicinity of the axial center, so that the levitation speed decreases. Accordingly, the contact time of the fine bubbles can be increased, so that a higher concentration of dissolved water can be obtained efficiently.

  The introduction port is preferably arranged to flow along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank in the same direction as the water flow from the dissolved water inlet. The raw water from the inlet flows along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank in the same direction as the water flow from the dissolved water inlet, so that it matches the water flow from the dissolved water inlet that is a swirling flow. Thus, a stronger rotational force can be generated. Accordingly, since fine bubbles can be more closely packed in the vicinity of the axial center, the contact time of the fine bubbles can be further increased.

  When the discharge port for introducing the fine bubbles from the bubble generating device is disposed at the axial center position of the lower part of the gas-liquid contact tank, the fine bubbles introduced from the lower part of the gas-liquid contact tank are generated as they rise. Since it can be rotated around the axis by the swirling flow and concentrated around the axis, it is possible to make it easy to aggregate the fine bubbles.

  If the position of the discharge port that discharges the fine bubbles is lower than the introduction port and the dissolved water inlet, the fine bubbles are swung along the inner peripheral surface of the gas-liquid contact tank together with the swirling flow and concentrated around the axis. Although it becomes difficult, if the position where the fine bubbles are discharged from the discharge port is higher than the introduction port and the dissolved water inlet, the swirling flow does not directly push the fine bubbles, so that it is easy to aggregate. be able to.

  When a plurality of the gas-liquid contact tanks are provided in parallel between the introduction side and the discharge side, and a control device that controls the amount of dissolved water in the plurality of gas-liquid contact tanks is provided, a large amount of high concentration Can be produced.

When the control device simultaneously discharges the dissolved water in the gas-liquid contact tanks provided in parallel, a large amount of high-concentration dissolved water can be delivered at a time.
Further, when the control device discharges the dissolved water in the gas-liquid contact tanks provided in parallel, the gas-liquid contact tank that discharges the concentrated water having a high concentration, and the discharge is stopped and circulated. Since it can be divided into a gas-liquid contact tank to be concentrated, dissolved water having a higher concentration can be continuously generated.

When a plurality of gas-liquid contact tanks are provided in series between the introduction side and the discharge side, the concentration of dissolved water can be increased every time the gas-liquid contact tank passes.
It is desirable that the gas-liquid contact tank is provided with a storage part for storing the discharged dissolved water. The dissolved water discharged from the gas-liquid contact tank is temporarily stored in the storage unit, so that the water supply speed decreases. Therefore, the fine bubbles remaining in the reservoir can be dissolved in the dissolved water.

The high concentration dissolved water generating system of the present invention mixes the high concentration dissolved water generating device of the present invention, the dissolved water from the high concentration dissolved water generating device, and the raw water bypassing the high concentration dissolved water generating device. And a mixing tank.
Since the high-concentration dissolved water generator of the present invention can obtain a high-concentration dissolved water, even if the high-concentration dissolved water is mixed in the mixing tank with the raw water bypassing the high-concentration dissolved water generator of the present invention, It can be set as the mixed water which ensured the density | concentration required for raw water purification. In addition, since the raw water having a high concentration is a part of the required amount, the high-concentration dissolved water generating system of the present invention can be downsized.

  In the present invention, fine bubbles are dissolved every time raw water circulates, and the concentration can be gradually increased. Therefore, a high concentration of dissolved water can be obtained. Since it is not necessary to increase the size, the increase in size of the apparatus can be suppressed.

It is a figure which shows the structure of the whole water purification system which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the high concentration dissolved water production | generation apparatus of the water purification system shown in FIG. It is a figure which shows the 1st modification of the high concentration dissolved water production | generation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the water guide unit of the high concentration dissolved water production | generation apparatus shown in FIG. 3, (A) is a top view, (B) is a front view. (A)-(C) are the figures for demonstrating operation | movement of the high concentration dissolved water production | generation apparatus shown in FIG. It is a figure which shows the modification of the water conveyance unit shown in FIG. 4, (A) is a top view which shows the introduction unit in which a water flow is introduce | transduced from three directions, (B) is a front view of (A), (C) is from four directions The top view which shows the introduction unit in which a water flow is introduce | transduced, (D) is a front view of (C). It is a figure which shows the 2nd modification of the high concentration dissolved water production | generation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the high concentration dissolved water production | generation apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the high concentration dissolved water production | generation apparatus which concerns on Embodiment 3 of this invention.

(Embodiment 1)
A high-concentration dissolved water generation system according to Embodiment 1 of the present invention will be described with reference to the drawings, taking a purification treatment system as an example.
A purification treatment system 1 shown in FIG. 1 includes a landing well 10 in which raw water that has been taken in is temporarily stored, a mixing basin 20 in which a flocculant is introduced, and agitated by a mixer to uniformly disperse and form a flock, A small floc formed in the pond 20 is gently agitated by a flocculator to make each floc a larger floc lump, a floc formation basin 30 for precipitating the floc, a solid and liquid that has become a floc And a filtration pond 50 for separating the minute.

  In addition, the purification treatment system 1 bypasses the high-concentration dissolved water generation device 60 and the high-concentration dissolved water generation device 60 that dissolve ozone gas using a part of the raw water from the filtration pond 50 as raw water and discharge it as dissolved water. Ozone contact pond 70 that functions as a mixing tank that mixes raw water and dissolved water from the high-concentration dissolved water generator 60, an activated carbon adsorption tower 80 that deodorizes with activated carbon, and a chlorine sterilizer that sterilizes by mixing chlorine. And a pond 90.

Here, the high concentration dissolved water production | generation apparatus 60 is demonstrated in detail based on FIG.
The high-concentration dissolved water generating device 60 includes a water guiding unit 61, an ozone generating unit 62, a gas-liquid contact tank 63, a bubble generating device 64, and a circulating unit 65.

  The water guide unit 61 includes a buffer tank 611 that temporarily stores the raw water, a raw water pump 612 that supplies the raw water in the buffer tank 611, a cock 613 that adjusts the water supply amount, and a flowmeter 614 that measures the water supply amount. I have.

  The ozone generator 62 includes an oxygen concentrator 621 that concentrates and sends high-purity oxygen, a pressure control valve 622, a flow meter 623 that measures the flow rate of the compressed oxygen that is sent, and ozone gas from the compressed oxygen. And an ozone generator 624 for generating the ozone.

The gas-liquid contact tank 63 is obtained by connecting tank units formed in a cylindrical shape. The gas-liquid contact tank 63 is obtained by connecting a water guide unit 631 located at the lowermost end, a first contact unit 632, a second contact unit 633, and a storage unit 634 located at the uppermost end.
The water introduction unit 631 is provided with an introduction port 631a on one side, and is connected to a raw water supply pipe 615 from the water introduction unit 61. In addition, a dissolved water inflow port 631b is provided on the other side of the water guide unit 631, and a dissolved water supply pipe 651 serving as a part of the circulation path of the circulation unit 65 is connected thereto.
A bubble generating device 64 is disposed in the first contact unit 632. The second contact unit 633 is provided with a dissolved water outlet 633a at the upper end. The second contact unit 633 is provided with an ozone meter 66 that measures the ozone concentration of the dissolved water.
The storage unit 634 is a storage unit that stores dissolved water discharged from the second contact unit 633 of the gas-liquid contact tank 63. The storage unit 634 is formed with a tube diameter larger than that of the second contact unit 633, and is provided on the upper portion of the second contact unit 633. An end of the second contact unit 633 protrudes inside the storage unit 634. A water supply pipe 635 leading to the ozone contact pond 70 is connected to the discharge port 634 a of the storage unit 634.

  The bubble generator 64 discharges ozone gas from the ozone generator 62 to the gas-liquid contact tank 63 as fine bubbles. As the bubble generating device 64, an air diffuser called a diffuser can be used. The bubble generating device 64 has a function of releasing fine bubbles having a diameter of about 0.1 μm to 2 mm.

The circulation unit 65 includes a dissolved water supply pipe 651 that forms a circulation path, a circulation pump 652 that circulates the dissolved water provided in the dissolved water supply pipe 651, a flow meter 653 that measures the flow rate of the dissolved water, and a cock 654. And.
One end of the dissolved water supply pipe 651 is connected to the upper end of the second contact unit 633 located above the gas-liquid contact tank 63 and the other end is connected to the water guide unit 631 located below.

Operation | movement of the water purification system 1 which concerns on Embodiment 1 of this invention comprised as mentioned above is demonstrated based on drawing.
As shown in FIG. 1, the collected polluted water is separated into a solid and a liquid by passing through a landing well 10, a mixing basin 20, a flock formation basin 30 and a sedimentation basin 40 and a filtration basin 50. The Part of the raw water taken from the filtration basin 50 is sent to the high-concentration dissolved water generator 60.

  As shown in FIG. 2, the raw water is temporarily stored in the buffer tank 611 of the water guide section 61. The raw water in the buffer tank 611 flows into the gas-liquid contact tank 63 from the inlet 631a via the cock 613 by the raw water pump 612. In the gas-liquid contact tank 63, since the fine bubbles from the bubble generating device 64 are blown out to the raw water from the inlet 631a, while the fine bubbles rise from the first contact unit 632 to the second contact unit 633, Fine bubbles dissolve in the raw water and become dissolved water.

  In the circulation section 65, the dissolved water in which the fine bubbles are dissolved in the raw water is dissolved in the dissolved water supply pipe 651 from the dissolved water outlet 633a of the second contact unit 633 by the water supply of the circulation pump 652 together with the fine bubbles remaining without being dissolved. Flows in. The dissolved water flows through the dissolved water supply pipe 651, flows again from the dissolved water inlet 631b to the gas-liquid contact tank 63, and comes into contact with the fine bubbles from the bubble generating device 64.

  In this way, the dissolved water is circulated from the gas-liquid contact tank 63 through the dissolved water outlet 633a to the dissolved water feed pipe 651 by the circulation pump 652, and then passes again through the dissolved water inlet 631b into the gas-liquid contact tank 63. Sufficient contact can be ensured by repeating the flow. Therefore, every time it circulates, fine bubbles dissolve in the raw water and the concentration can be gradually increased, so that a high concentration of dissolved water can be obtained.

  In addition, a dissolved water feed pipe 651 that forms a circulation path with respect to the gas-liquid contact tank 63 has one end connected to the upper part of the gas-liquid contact tank 63 and the other end connected to the lower part. Since a water flow (cocurrent flow) that rises from the bottom to the top of the liquid contact tank 63 is created, the fine bubbles released from the bubble generating device 64 are widened by the water flow and the coupling is suppressed. Therefore, it is possible to reduce the contact area with the raw water by reducing the contact area with the raw water by reducing the surface area of the bubbles as a whole by combining the fine bubbles, and improving the contact efficiency. be able to.

Thus, when it becomes high concentration dissolved water, the dissolved water is sent from the storage unit 634 of the gas-liquid contact tank 63 to the ozone contact pond 70 through the water supply pipe 635.
When flowing from the second contact unit 633 to the storage unit 634, the water supply speed is reduced by temporarily storing the dissolved water in the storage unit 634. Therefore, the remaining fine bubbles can be dissolved in the dissolved water in the storage unit 634. Further, since the end of the second contact unit 633 protrudes into the storage unit 634, the dissolved water from the second contact unit 633 overflows and enters the storage unit 634. Become. Therefore, the remaining fine bubbles can be further dissolved in the dissolved water.

In the ozone contact pond 70, the raw water that has bypassed the high-concentration dissolved water generation device 60 from the filtration basin 50 and the high-concentration dissolved water from the high-concentration dissolved water generation device 60 are mixed, so that the concentration sufficient for purification Dilute in dissolved water.
The purification treatment system 1 only needs to use part of the raw water from the filter basin 50 as dissolved water in which ozone gas is dissolved, and does not use all of the raw water from the filter basin 50 as dissolved water. Need not have a large capacity. Therefore, the purification processing system 1 can be miniaturized and can save power.

  In addition, the high-concentration dissolved water generator 60 does not dissolve in the raw water as compared to the conventional dissolved water generator of the one-pass contact method in which the ozone gas passes through the gas-liquid contact tank only once without the circulation unit 65. Since the amount of waste ozone gas is small, dissolved water having the same concentration can be generated with a smaller amount of ozone gas than the conventional dissolved water generator. Therefore, since the amount of electric power necessary for generating ozone gas can be saved in the ozone generator 624, the high-concentration dissolved water generator 60 can save power.

In the high-concentration dissolved water generating apparatus 60 according to the first embodiment, the ozone concentration in the gas-liquid contact tank 63 and the gas-liquid contact tank are adjusted by adjusting the cock 613 and the amount of water supplied from the raw water pump 612. The outflow amount from 63 to the ozone contact pond 70 can be adjusted. Further, the ozone concentration can be adjusted by the amount of water supplied by the circulation pump 652 and the amount of ozone gas generated by the ozone generator 624.
Further, by closing the cock 613, the inflow of the gas-liquid contact tank 63 is stopped, and the dissolved liquid is discharged from the gas-liquid contact tank 63 after circulating the gas-liquid contact tank 63 until a predetermined concentration of dissolved water is obtained. You may make it provide the cock for making it the water supply pipe 635. FIG.

  In the first embodiment, the circulation pump 652 feeds the dissolved water from the lower part to the upper part of the gas-liquid contact tank 63. However, the circulation pump 652 may be configured as a countercurrent that feeds the dissolved water from the upper part to the lower part. Good. In that case, since the dissolved water flows in the direction opposite to the rising of the fine bubbles, the rising speed of the fine bubbles can be reduced. Therefore, the contact period between the fine bubbles formed by ozone gas and the raw water can be extended.

In Embodiment 1, the storage unit 634 that is a storage unit is connected to the second contact unit 633 so that the storage unit 634 is part of the gas-liquid contact tank 63. It is good also as a separate body from a liquid contact tank. In that case, it is desirable to form the interior of the reservoir wider than the pipe diameter connecting the reservoir and the gas-liquid contact tank so that the water supply speed is reduced in the reservoir.
Furthermore, in the first embodiment, one circulation path is formed in the gas-liquid contact tank 63, but a plurality of circulation paths may be provided according to the size of the gas-liquid contact tank 63. In addition, the gas-liquid contact tank 63 has a tower shape in which cylindrical units are connected. However, the gas-liquid contact tank 63 may have a columnar shape, a rectangular parallelepiped shape, or a cube shape having a large diameter with respect to the height. When the gas-liquid contact tank has these shapes, the circulation portion 65 may be provided side by side on the peripheral wall surface as described above.

(First Modification of Embodiment 1)
A first modified example of the high-concentration dissolved water generating apparatus according to Embodiment 1 of the present invention will be described based on the drawings. In FIG. 3, the same components as those in FIG.
As shown in FIG. 3, the high-concentration dissolved water generating device 60a according to the first modification is characterized in that a swirling flow is generated by a water guide unit 631x located at the lowermost end of the gas-liquid contact tank 63x. It is.

The water introduction unit 631x is provided with an inlet 631a connected to the raw water supply pipe 615 from the water supply section 61 on one side, and a dissolved water flow connected to a dissolved water supply pipe 651 that is a part of the circulation path of the circulation section 65. An inlet 631b is provided on the other side.
As shown in FIG. 4A and FIG. 4B, the inlet 631a and the dissolved water inlet 631b are installed on the same plane that intersects at right angles to the axis and are positioned in opposite directions. Thus, the water flow is arranged in the same direction along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank 63x.

Further, in the water guiding unit 631x, a bubble generating nozzle 64b for introducing fine bubbles into the gas-liquid contact tank 63x is disposed at the axial center position below the gas-liquid contact tank 63x. The bubble generating nozzle 64b discharges ozone gas from the ozone generator 624 from 0.01 mm or less to micro-order fine bubbles, and further into fine bubbles called nanobubbles into the raw water. Between the ozone generator 624 and the bubble generating nozzle 64b, a pressure regulator 64a is provided that makes the pressure of the ozone gas from the ozone generator 624 a predetermined pressure. In the first modification, the bubble generation nozzle 64b is installed instead of the bubble generation device 64 (see FIG. 2).
The bubble generating nozzle 64b has a position where fine bubbles are discharged higher than the inlet 631a and the dissolved water inlet 631b.

Next, operation | movement of the high concentration dissolved water production | generation apparatus 60a which concerns on a 1st modification is demonstrated based on drawing.
The ozone gas from the ozone generator 624 shown in FIG. 3 becomes fine bubbles from the discharge port of the bubble generating nozzle 64b, and as shown in FIG. 5 (A), the gas-liquid is discharged from the axial center position below the gas-liquid contact tank 63x. It is discharged into the contact tank 63x.

The water flow containing fine bubbles from the inlet 631a and the dissolved water from the dissolved water inlet 631b are in the same direction along the circumferential direction of the inner peripheral surface of the gas-liquid contact tank 63x at the lower part of the gas-liquid contact tank 63x. Flowing into. By doing so, as shown in FIG. 5 (B), a swirling flow around the axis is generated in the lower part of the gas-liquid contact tank 63x. The swirling flow spreads to the upper part with time and becomes a large swirling flow as a whole inside the gas-liquid contact tank.
As shown in FIG. 5C, the fine bubbles from the bubble generating nozzle 64b are swirling along the inner peripheral surface of the gas-liquid contact tank together with the swirling flow. As a result, the ascent rate decreases. Accordingly, the contact time of the fine bubbles can be increased, so that a higher concentration of dissolved water can be obtained efficiently.

  Further, in the bubble generation nozzle 64b, the position where the fine bubbles are discharged from the discharge port is disposed at a position higher than the introduction port 631a for introducing the raw water and the dissolved water inlet 631b for introducing the dissolved water which is the circulating water. Since the swirl flow does not directly push the fine bubbles, it can be easily collected.

  In the first modification, since the gas-liquid contact tank 63 has a substantially circular horizontal cross section, a strong swirling flow is generated by arranging the inlet 631a and the dissolved water inlet 631b along the tangential direction of the gas-liquid contact tank 63. I am letting. That is, the inlet 631a and the dissolved water inlet 631b are arranged so that the gas-liquid contact tank 63 faces in the direction orthogonal to the radial direction. The positional relationship between the inlet 631a and the dissolved water inlet 631b is provided at a position that is point-symmetric about the axis.

  However, the inlet 631a and the dissolved water inlet 631b may have an inclination angle that is an obtuse angle or an acute angle with respect to the radial direction as long as a swirl flow can be generated. Moreover, as long as it arrange | positions so that a water flow may flow in the same direction along the circumferential direction of the gas-liquid contact tank 63, the inlet 631a and the dissolved water inflow port 631b do not need to be a point-symmetrical position.

Further, as shown in FIGS. 6A and 6B, the water guide units 631y and 631z are connected to a pipe for introducing a water flow around the bubble generating nozzle 64b located at the axial center at every predetermined angle. Has been.
For example, in the introduction unit 631y shown in FIG. 6A, two dissolved water inlets 631b for introducing dissolved water and one inlet 631a for introducing raw water are provided every 120 °.
In addition, in the introduction unit 631z shown in FIG. 6B, two dissolved water inlets 631b and two inlets 631a are alternately provided every 90 °.

  In this way, one or more inlets 631a and one or more dissolved water inlets 631b may be combined and connected to generate a swirling flow. When connecting to two or more inlets 631a or two or more dissolved water inlets 631b, the dissolved water water supply pipe 651 and the raw water water supply pipe 615 may be connected by interposing a branch pipe that branches into two or more. it can.

(Second Modification of Embodiment 1)
The 2nd modification of the high concentration dissolved water production | generation apparatus which concerns on Embodiment 1 of this invention is demonstrated based on drawing. In FIG. 7, the same components as those in FIG.
In the high-concentration dissolved water generating device 60b according to the second modified example, as in the first modified example, the pressure regulator 64a that makes the pressure of the ozone gas from the ozone generating device 624 a predetermined pressure, and the ozone gas from the ozone generating device 624 A bubble generating nozzle 64b that discharges into the raw water in the form of fine bubbles is installed in place of the bubble generating device 64 (see FIG. 2). Since the bubbles by ozone gas become finer, the total contact area can be increased, and the rising speed of the fine bubbles can be reduced, so that a higher concentration of dissolved water can be obtained.

  Moreover, in the high concentration dissolved water production | generation apparatus 60b, since the circulation pump 652 is sending dissolved water from the upper part of the gas-liquid contact tank 63 to the lower part, it can further reduce the floating speed of a fine bubble. Therefore, the contact period between the fine bubbles formed by ozone gas and the raw water can be extended.

  If the bubbles due to ozone gas are too fine and the ascending speed is slow, and the fine bubbles flow from the upper part to the lower part of the gas-liquid contact tank 63 and into the dissolved water feed pipe 651 together with the flow of dissolved water, the circulation pump 652 may send dissolved water from the lower part to the upper part of the gas-liquid contact tank 63.

(Embodiment 2)
A high-concentration dissolved water generator according to Embodiment 2 of the present invention will be described with reference to the drawings. In FIG. 8, the same components as those in FIG.
In the high-concentration dissolved water generating apparatus according to the second embodiment, a plurality of gas-liquid contact tanks are provided in parallel between the introduction side and the discharge side, and a control device is installed to control the generation of dissolved water. It is characterized by being.

  As shown in FIG. 8, the high-concentration dissolved water generating device 60 c is provided with three sets of a water guiding portion 61, a gas-liquid contact tank 63, a circulating portion 65, and a bubble generating device 64. Each buffer tank 611 is connected to a distribution pipe 616 in which one pipe is divided into three pipes in order to distribute the raw water pumped from the filtration basin 50 (see FIG. 1). In addition, each of the three gas-liquid contact tanks 63 is connected to an aggregation pipe 636 that collects three pipes into one.

As described above, in the high-concentration dissolved water generating device 60 c, the three gas-liquid contact tanks 63 are connected to the filtration basin 50 by the distribution pipe 616 through the water conduit 61 and are connected to the ozone contact basin 70 by the aggregation pipe 636. Therefore, the gas-liquid contact tank 63 is connected in parallel between the introduction side and the discharge side. In addition, each of the bubble generating devices 64 has an ozone generation unit 62 that supplies ozone gas in common.
The control device 67 provided in the high-concentration dissolved water generating device 60c controls the flow rates of the electromagnetic valve 613a provided in the three sets of raw water supply pipes 615 and the electromagnetic valve 635a provided in the water supply pipe 635.

  For example, the control device 67 may perform control so that the dissolved water in the gas-liquid contact tanks 63 provided in parallel is discharged simultaneously by setting all three sets of electromagnetic valves 613a and 635a to a water-permeable state. . By doing so, a large amount of dissolved water can be generated.

  The control device 67 may discharge the dissolved water from the gas-liquid contact tank 63 while switching one by one among the three sets of electromagnetic valves 613a and 635a. By doing so, it can be divided into a gas-liquid contact tank 63 that discharges highly concentrated dissolved water and a gas-liquid contact tank 63 that stops discharge and circulates to increase the concentration. The dissolved water thus produced can be continuously produced.

  The gas-liquid contact tank 63 that discharges the dissolved water that is switched by the control device 67 may be switched every predetermined time, or may be switched based on concentration information from the ozone meter 66. Further, when dissolved water having a desired ozone concentration cannot be obtained in the gas-liquid contact tank 63 even after a predetermined time has elapsed, flow rate information from a flow meter 653 provided in the dissolved water supply pipe 651, or raw water Based on the flow rate information from the flow meter 614 provided in the water supply pipe 615, the control device 67 adjusts the water supply amount of the circulation pump 652 and the raw water pump 612, so that it is possible to obtain high-concentration dissolved water. .

  In the second embodiment, three gas-liquid contact tanks 63 are connected in parallel, but the number of gas-liquid contact tanks 63 is reduced depending on the amount of dissolved water supplied, whether two or four or more. Or increase it. In addition to switching the three gas-liquid contact tanks 63 one by one, the control device 67 has four gas-liquid contact tanks 63 connected in parallel or six gas-liquid contact tanks 63 connected in parallel. If they are connected, they can be switched two by two or three. Therefore, the high concentration dissolved water production | generation apparatus 60c which concerns on this Embodiment 2 is excellent in the expandability.

(Embodiment 3)
Next, a high-concentration dissolved water generator according to Embodiment 3 of the present invention will be described with reference to the drawings. In FIG. 9, the same components as those in FIG.
The high-concentration dissolved water generating apparatus according to Embodiment 3 is characterized in that a plurality of gas-liquid contact tanks are provided in series between the introduction side and the discharge side.

  As shown in FIG. 9, the high-concentration dissolved water generation device 60 d is provided with two sets of a gas-liquid contact tank 63, a circulation unit 65, and a bubble generation device 64, and a water supply pipe from the storage unit 634. By connecting 635 to the inlet 631a of the next gas-liquid contact tank 63, they are connected in series. Since the gas-liquid contact tanks 63 are connected in series, the dissolved water that has been circulated through the respective gas-liquid contact tanks 63 to have a high concentration is further generated in the gas-liquid contact tank 63 of the next stage, and fine ozone gas bubbles are generated. Since it is charged, the dissolved water can be highly concentrated every time the dissolved water passes through the gas-liquid contact tank 63.

  In the third embodiment, two gas-liquid contact tanks 63 are connected in series. However, three or more gas-liquid contact tanks 63 can be connected in series according to a desired concentration.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment. For example, in the second modification of the first embodiment, the flow direction of the dissolved water flowing in the high-concentration dissolved water generating device 60 and the gas-liquid contact tank 63 according to the first embodiment is reversed. Also in the high concentration dissolved water production | generation apparatuses 60c and 60d which concern on the form 2 and 3, it is possible to make the water supply by the circulation pump 652 into a reverse direction. In addition, the water supply unit 631x that generates the swirl flow described in the first modification may be applied to the high-concentration dissolved water generation devices 60c and 60d according to the second and third embodiments.

  The high-concentration dissolved water generation apparatus and the high-concentration dissolved water generation system of the present invention are suitable as a purification device for a water purification plant by using fine bubbles as ozone gas, but since high-concentration dissolved water by ozone gas can be obtained, It can also be used in lake purification, sludge countermeasures, aquariums, pools, water treatment, food industry, agriculture, forestry and fisheries, medical field, precision electronics field, etc.

  It is also possible to produce various high-concentration dissolved water by using fine bubbles as another gas. For example, a mixed gas of carbon dioxide and methane gas is introduced into the high-concentration dissolved water generator of the present invention, and carbon dioxide gas is dissolved in raw water and removed from the mixed gas to selectively extract methane gas and It is also possible to use a calorie gas. By doing so, the high concentration dissolved water production | generation apparatus of this invention can be functioned as a bionatural gas production | generation apparatus. In addition, by dissolving and removing carbon dioxide gas, it can be used in sewage wastewater treatment, fossil fuel industry, beauty health industry, and the like.

  Furthermore, by dissolving oxygen gas in raw water with the high-concentration dissolved water generating apparatus of the present invention, it can be used in the food industry, the agriculture, forestry and fisheries industry, the medical field, and the beauty and health industry.

DESCRIPTION OF SYMBOLS 1 Purification processing system 10 Landing well 20 Mixing basin 30 Frock formation basin 40 Sedimentation basin 50 Filtration basin 60, 60a-60d High concentration dissolved water production | generation apparatus 61 Water conveyance part 611 Buffer tank 612 Raw water pump 613 Cock 613a Electromagnetic valve 614 Flowmeter 615 Raw water Water supply pipe 616 Distribution pipe 62 Ozone generator 621 Oxygen concentrator 622 Pressure control valve 623 Flow meter 624 Ozone generator 63, 63x Gas-liquid contact tank 631, 631x, 631y Water guide unit 631a Inlet 631b Dissolved water inlet 632 First contact unit 633 Second contact unit 633a Dissolved water outlet 634 Storage unit 634a Discharge port 635 Water supply pipe 635a Solenoid valve 636 Aggregation pipe 64 Bubble generation device 64a Pressure regulator 64b Bubble generation nozzle 65 Circulation section 651 Dissolved water supply pipe 652 Circulation pump 653 Flow meter 654 Cock 66 Ozone meter 67 Controller 70 Ozone contact pond 80 Activated carbon adsorption tower 90 Chlorine sterilization pond

Claims (12)

A cylindrical gas-liquid contact tank in which the dissolved water generated by bringing fine bubbles into contact with the raw water taken in from the inlet is taken out from the outlet,
A bubble generator for generating fine bubbles to the gas-liquid contact tank;
One end is connected to the upper part of the gas-liquid contact tank, the other end is connected to the lower part, a circulation path through which the dissolved water of the gas-liquid contact tank flows,
A high-concentration dissolved water generator comprising a circulation pump provided in the circulation path and circulating the dissolved water in the gas-liquid contact tank.   2. The high pump according to claim 1, wherein the circulation pump feeds dissolved water from the upper part to the lower part of the gas-liquid contact tank, or sends dissolved water from the lower part to the upper part of the gas-liquid contact tank. Concentrated dissolved water generator.   The high concentration dissolved water production | generation of Claim 1 arrange | positioned so that a water flow may flow along the circumferential direction of the internal peripheral surface of the said gas-liquid contact tank at the dissolved water inflow port where the other end of the said circulation path was connected. apparatus.   The high concentration dissolved water production | generation of Claim 3 arrange | positioned so that the said inlet may flow along the circumferential direction of the internal peripheral surface of the said gas-liquid contact tank in the same direction as the water flow from the said dissolved water inflow port. apparatus.   The high-concentration dissolved water generating apparatus according to claim 3 or 4, wherein a discharge port for introducing fine bubbles from the bubble generating apparatus is disposed at a lower axial position of the gas-liquid contact tank.   6. The high-concentration dissolved water generating apparatus according to claim 3, wherein the discharge port is disposed at a position where a fine bubble is discharged at a position higher than the introduction port and the dissolved water inflow port. A plurality of the gas-liquid contact tanks are provided in parallel between the introduction side and the discharge side,
The high concentration dissolved water production | generation apparatus of any one of Claim 1 to 6 provided with the control apparatus which controls the flow volume of the dissolved water of these gas-liquid contact tanks.   The said control apparatus is a high concentration dissolved water production | generation apparatus of Claim 7 which discharges simultaneously the dissolved water in the gas-liquid contact tank provided in parallel.   The said control apparatus is a high concentration melt | dissolution water production | generation apparatus of Claim 7 which discharges | emits while switching the melt water in the gas-liquid contact tank provided in parallel.   The high-concentration dissolved water generating apparatus according to any one of claims 1 to 6, wherein a plurality of the gas-liquid contact tanks are provided in series between the introduction side and the discharge side.   The high-concentration dissolved water generating apparatus according to any one of claims 1 to 10, wherein the gas-liquid contact tank is provided with a storage unit that stores the discharged dissolved water. The high-concentration dissolved water generating apparatus according to any one of claims 1 to 11,
A high-concentration dissolved water generation system comprising: a mixing tank that mixes dissolved water from the high-concentration dissolved water generation device and raw water bypassing the high-concentration dissolution water generation device.

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