JP6095433B2 - Dissolved substance precipitation removal apparatus and precipitation removal method - Google Patents

Description

  The present invention relates to a dissolved substance precipitation removing apparatus and a precipitation removing method for separating and removing a substance dissolved in a solution by drying / depositing the substance.

  In order to deposit a metal or other substance ionized and dissolved in a solution such as an aqueous solution and take it out in a dry state, a conventional method of separating and removing the dissolved substance by crystallizing it by heat drying or vacuum drying. Has been taken. However, in the case of this heat drying or vacuum drying, a large amount of energy is consumed, which is not efficient.

  In addition, although the purpose of use is completely different, an ultrasonic atomizing smoke eliminating apparatus (see Patent Document 1) using ultrasonic atomization and corona discharge is disclosed as a prior art having a configuration similar to the present invention. . This ultrasonic atomizing smoke eliminating apparatus is configured such that liquid is put into a container, and the liquid consumed from the liquid supply apparatus is supplied so that the liquid in the container has a predetermined depth. An ultrasonic vibrator is mounted in the liquid, an oscillation output is supplied from the oscillator to the ultrasonic container, and a negative electrode is mounted at a position where mist is generated above the ultrasonic vibrator. Is connected to a high voltage power source, and a ring-shaped collecting electrode is mounted on the negative electrode, and the ring-shaped collecting electrode is grounded.

According to this ultrasonic atomization smoke eliminating device, the liquid mist is generated by the ultrasonic wave generated from the ultrasonic vibrator, and the liquid mist is charged by passing the mist through the area where corona discharge is performed. By blowing this charged mist on the smoke, the smoke is instantly charged, so that the charged smoke adheres to the floor and walls, so the smoke disappears instantly. By spraying, the generated dust can be erased, and further, it can be used for environmental protection such as smoke removal of grilled meat, deodorization of livestock barn, or smoke removal treatment of factories.
However, this apparatus is for purifying contaminated air such as smoke extinguishment, and is not a technique for extracting dissolved substances.

JP2003-159345A (first page, [0005])

The problem to be solved with respect to the dissolved substance precipitation removal apparatus and the precipitation removal method is that, as a technique for precipitating a substance dissolved in a solution such as an aqueous solution and taking it out in a dry state, depending on the conventional heat drying or vacuum drying, a large amount of Will consume energy and is not efficient.
Therefore, an object of the present invention is to provide a dissolved substance that can be efficiently deposited by using a mist of a solution and corona discharge, without using conventional heat drying or vacuum drying. It is providing the precipitation removal apparatus and the precipitation removal method.

  According to one aspect of the dissolved substance precipitation removing apparatus according to the present invention, in the dissolved substance precipitation removing apparatus that separates and removes the substance dissolved in the solution by drying / depositing, generation of mist that generates mist from the solution A needle electrode that is disposed at a portion to which the mist generated by the mist generating device is guided, is provided with a tip extending upward and a high voltage is applied thereto, and is provided in a cylindrical shape above the needle electrode The needle electrode is arranged so as to be equidistant about the entire circumference of the inner circumference of the circular lower end edge that is the part closest to the tip of the needle electrode, and is arranged in a state of being vertically concentric with at least the tip of the needle electrode. A cylindrical electrode that is grounded and corona discharge is generated between the needle electrode and the cylindrical inner peripheral surface to generate an upflowing ion wind, and the mist is refined to generate nanomist, and dissolved in the solution. A dust collecting portion having an adherend surface disposed above the cylindrical electrode and grounded so that the fine particles adhere so as to attach and take out the fine fine particles generated by the deposited substances. .

Further, according to one embodiment of the dissolved matter precipitation / removal device according to the present invention, it is formed by being cut out at the inner periphery of the lower end edge of the cylindrical electrode so that droplets generated by aggregation on the cylindrical electrode can easily flow. It is possible to provide a cut-out groove.
Further, according to one embodiment of the dissolved matter precipitation / removal device according to the present invention, the body part is provided so as to support the cylindrical electrode so as to contain the needle electrode, and a portion immediately below the cylindrical electrode In the enlarged diameter portion formed in the shape of a conical cylinder that gradually increases in diameter downward, the inner peripheral surface of the enlarged diameter portion is provided in a porous shape.

  In addition, according to one embodiment of the dissolved matter precipitation / removal device according to the present invention, the needle electrode is supported from the front end portion to the rear end side so that droplets generated by aggregation on the needle electrode can easily flow. It can be characterized by having a downward apex formed at the bent part that reaches the part.

  Moreover, according to one form of the dissolved substance precipitation removal apparatus concerning this invention, the said fog generation apparatus can be equipped with the ultrasonic transducer | vibrator arrange | positioned so that a solution may be contact | connected as a component. .

Moreover, according to one form of the dissolved substance precipitation removal apparatus concerning this invention, it is equipped with the fan for nano mist ventilation which ventilates so that the nano mist produced by the said mist passing through the said cylindrical electrode may be sent out. Can be characterized.
Moreover, according to one form of the dissolved substance precipitation removal apparatus concerning this invention, it is for the mist ventilation which ventilates so that the said mist may be sent out in the said body part between the site | part where the said mist is generated, and the said needle electrode. A fan may be provided.

  Further, according to one embodiment of the dissolved substance precipitation removing apparatus according to the present invention, the needle electrode is arranged in a state of being inserted from an opening provided in a side peripheral portion of the body portion, and mist is formed on the needle electrode. In order to prevent aggregation as much as possible, the opening may be a part for introducing air from the nanomist air blowing fan.

  Further, according to one embodiment of the method for precipitating and removing a dissolved substance according to the present invention, in the method for precipitating and removing the dissolved substance, the substance dissolved in the solution is separated and removed by drying and precipitating. A step of generating mist, a step of introducing the mist to a space where a high voltage is applied and corona discharge is performed, and the mist is refined by the corona discharge to generate nanomist, and the fine particles are attached. A step of guiding the nanomist to a dust collecting portion having a surface to be adhered, which is grounded, and attaching and taking out very fine particles generated by precipitation of a substance dissolved in the solution.

  According to the apparatus and method for depositing and removing a dissolved substance according to the present invention, the dissolved substance is efficiently precipitated by using mist formation of a solution and corona discharge without using conventional heat drying or vacuum drying. It has a particularly advantageous effect that it can be taken out in a dry state.

It is explanatory sectional drawing which shows an example of the precipitation removal apparatus of the dissolved substance concerning this invention. It is principal part sectional drawing of the form of FIG.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a dissolved substance precipitation removing apparatus and a precipitation removing method according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 and 2).
This dissolved substance precipitation removal apparatus separates and removes the substance dissolved in the solution (W) by drying and precipitation.

Reference numeral 10 denotes a mist generating device as long as it has a configuration for generating mist (M) from the solution (W). The fog generator 10 of the form example shown in FIG. 1 includes an ultrasonic transducer 11 arranged as a component so as to be in contact with the solution (W). An ultrasonic oscillator 12 is connected to the ultrasonic vibrator 11. In this embodiment, the ultrasonic transducer 11 is arranged so as to be immersed in the solution. Reference numeral 15 denotes a solution supply device, which is connected to the liquid tank of the body portion 40 so as to maintain a state where a required amount of solution is stored. Further, in this embodiment, a baffle plate 13 is disposed above the ultrasonic generator 11 above the mist generating device 10, and a large particle mist or water droplet such as a water droplet is placed on the upper corona. It is provided so as to be intercepted and trapped so as not to reach the space where the discharge is performed. The mist (M) moves upward through the side of the baffle plate 13 as indicated by the arrow in FIG.
Note that the mist generation device 10 is not limited to this, and for example, a mist may be generated by spraying a solution with an injection nozzle.

Reference numeral 20 denotes a needle electrode, which is disposed at a portion where the mist (M) generated by the fog generating device 10 is guided, and is provided so that the tip extends upward, and a high voltage is applied, so that a sharp tip is applied. Corona discharge can be generated. Reference numeral 25 denotes a high-voltage power supply device, which is connected to the needle electrode 20. In the present embodiment, the tip of the needle electrode 20 is provided at a position corresponding to the position directly above the fog generating device 10.
In addition, either a positive voltage or a negative voltage can be applied to the needle electrode 20 to make either a positive discharge or a negative discharge. In addition, it is easier to obtain an ion wind having a higher flow rate in the negative discharge than in the positive discharge.

  Reference numeral 30 denotes a cylindrical electrode, which is provided in a cylindrical shape above the needle electrode 20 so that the needles are equidistant with respect to the entire circumference of the circular lower end edge inner periphery 32 that is the portion closest to the tip of the needle electrode 20. The electrode 20 is arranged concentrically with at least the tip of the electrode 20 so as to stand up and down, is grounded, and corona discharge is generated between the needle electrode 20 and the cylindrical inner peripheral surface 31 to generate an upward flow of ion wind. At the same time, the mist (M) can be refined to generate nano mist (NM).

As described above, when the mist (M) is introduced into the site where the upward ionic wind is generated and passes through the site (space), it is efficiently subdivided by the action of the corona discharge. According to this, nano mist (NM) which is an extremely small mist particle having a particle size of submicron or less (100 nano or less) can be efficiently generated. Moreover, electric charge can be given to nanomist (NM) by corona discharge.
When the nano mist (NM) efficiently generated by the above configuration is generated from the mist (M) of water, high air cleaning effects such as a bactericidal effect, a deodorizing effect, a smoke eliminating effect, and a dust collecting effect are exhibited. That is, according to the above structure, it can utilize suitably as an air purification apparatus.

  Reference numeral 50 denotes a dust collecting unit, which is disposed above the cylindrical electrode 30 so as to attach and take out the very fine particles generated by the precipitation of the substance dissolved in the solution (W), and is grounded so that the fine particles adhere to it. A surface 51 to be attached which is grounded. In this embodiment, it is configured by a dust collecting plate made of metal such as aluminum formed in a plate shape, and the lower surface thereof is provided as the adherend surface 51. The adherend surface 51 is an inclined surface that guides the airflow so that the airflow can be smoothly passed with directivity while the airflow of the ionic wind and the blower is appropriately applied so that the fine particles are easily attached. In the present embodiment, the adherend surface 51 is inclined by tilting the dust collecting plate.

  According to the apparatus for depositing and removing dissolved substances having the above configuration, the solution becomes nano mist (NM) and becomes fine particles, so that it is easy to dry and the concentration of the dissolved substance is rapidly concentrated and efficiently precipitated. The As a result, the dissolved substance is likely to adhere to the adherend surface 51 in a state where it is deposited and dried. Then, by corona discharge, fine particles present as a liquid such as water are easily charged negatively, and solid particles that are precipitated fine particles are easily charged positively. The positively charged solid particles are attracted to the grounded adherend surface 51 and are efficiently attached on the adherend surface 51. According to this, compared with other methods, there is a specific effect that the dissolved substance can be efficiently dried and precipitated, and can be efficiently separated and removed.

  Reference numeral 33 denotes a notch groove, which is formed by being cut out at the inner periphery 32 of the lower end edge of the cylindrical electrode 30 so that droplets such as water droplets generated by aggregation on the cylindrical electrode 30 can easily flow (see FIG. 2). ). The cutout groove 33 may be formed by, for example, being cut out in a V shape at at least one position on the inner corner of the lower end edge inner periphery 32. According to the cutout groove 33, it is possible to prevent a liquid such as water from being accumulated in a ring shape and not flowing under the inner periphery 32 of the lower end edge of the cylindrical electrode 30 due to surface tension. That is, the droplet can flow smoothly, and the droplet can be prevented from approaching the needle electrode 20 rather than the inner periphery 32 of the lower end edge of the cylindrical electrode 30. Can be interrupted. This is because it is possible to prevent the surface tension that causes the droplets from becoming larger due to the notch groove 33, so that corona discharge can be suitably maintained.

  In addition, in order to generate | occur | produce ion wind by corona discharge, it is not limited to the cylindrical electrode 30 like this invention, For example, although a plate-shaped electrode can be utilized, the cylindrical electrode 30 has the advantage that a stronger ion wind can be generated. is there. Further, in the cylindrical electrode 30, droplets such as water droplets generated by aggregation can be appropriately and easily processed as in this embodiment.

  Further, in the present embodiment, the body portion 40 is provided so as to include the needle electrode 20 and support the cylindrical electrode 30, and the cone gradually increases in diameter toward the lower portion of the portion immediately below the cylindrical electrode 30. In the enlarged diameter portion 41 formed in a cylindrical shape, the inner peripheral surface 41a of the enlarged diameter portion is provided in a porous shape. The entire enlarged diameter portion 41 may be formed in a porous shape, or only the surface portion of the inner peripheral surface 41a may be formed by, for example, a water absorbent sponge. According to this, the droplet which agglomerates mist (M) can flow suitably, and corona discharge can be maintained suitably.

  Reference numeral 22 denotes a downward apex, which is downwardly bent at a bent portion extending from the front end portion of the needle electrode 20 to a supported portion on the rear end side so that droplets such as water droplets generated by aggregation on the needle electrode 20 can easily flow. It is pointed. Also by this, it is possible to positively drop droplets generated by agglomerating mist (M) so that corona discharge can be suitably flowed, and corona discharge can be appropriately maintained. Reference numeral 21 denotes an insulator for protecting the needle electrode 20.

Reference numeral 70 denotes a fan for blowing nano mist, which is a blower that blows out the nano mist (NM) generated when the mist (M) is refined by passing through the cylindrical electrode 30. According to the fan 70 for blowing air from the nano mist, since the upper portion of the body portion 40 is open, external air is guided so as to merge with the ionic wind that is the upward flow, and the air is mixed and blown upward. Is done. Further, according to the nano mist blowing fan 70 of the present embodiment, the air passage is formed so as to guide the air toward the inner tangential direction of the outer peripheral wall 45 of the body portion 40, thereby generating a vortex and efficiently. It is configured to be able to blow.
In the body portion 40 of this embodiment, the side peripheral portion 42 and the outer peripheral wall 45 are provided concentrically, and the nanomist blower fan 70 has a cylindrical shape between the side peripheral portion 42 and the outer peripheral wall 45. An air outlet is connected to blow air into the space. Further, at least a portion of the body portion 40 that supports the cylindrical electrode 30 is made of an insulating material such as resin.

  Reference numeral 60 denotes a mist blowing fan, which blows air so as to send the mist (M) into the body portion 40 between the portion where the mist (M) is generated and the needle electrode 20. According to the mist blowing fan 60, the external air is guided into the body portion 40 so as to be mixed with the mist (M), and the needle electrode 20 is communicated with the hollow cylindrical electrode 30 and opened. Therefore, air mixed with mist (M) is blown upward. Further, according to the mist blowing fan 60, the air passage is formed so as to guide the air toward the inner tangential direction of the body portion 40, so that a vortex is generated and the air can be efficiently blown. Yes. The mist blowing fan 60 is a blower having a smaller air volume than the nano mist blowing fan 70.

  Further, in the present embodiment, the needle electrode 20 is arranged in a state of being inserted from the opening 43 provided in the side peripheral portion 42 of the body portion 40, and it is possible that the mist (M) is aggregated on the needle electrode 20. In order to prevent this, the opening 43 is a part for introducing the air blown from the nanomist blower fan 70. According to this, it can prevent as much as possible that mist (M) aggregates and a droplet is produced, and can maintain corona discharge suitably.

  According to the dissolved substance precipitation removing apparatus having the above-described configuration, the process of the dissolved substance precipitation removing method according to the present invention can be suitably performed. That is, the step of generating mist (M) from the solution (W) by the mist generation device 10 and the mist (M) are guided to a space where a high voltage is applied and corona discharge is performed, and the mist (M) is generated by the corona discharge. M) is refined to generate nano mist (NM), and the nano mist (NM) is guided to the dust collecting part 50 having the adherend surface 51 that is grounded so that the fine particles adhere to the solution (W). A method for depositing and removing dissolved substances, which includes a step of adhering and taking out ultrafine particles generated by depositing substances dissolved in the solution, can be suitably implemented.

  The dissolved substance dissolved in the solution such as the aqueous solution according to the present invention includes a metal and a metal compound, and the metal or metal compound includes a heavy metal which is a radioactive substance. Can be separated and removed. Further, for example, tap water is an aqueous solution in which mineral components such as sodium, calcium, magnesium, potassium, and silica are dissolved as dissolved substances, and according to the present invention, these mineral components can be suitably separated and removed. it can.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 10 Fog generator 11 Ultrasonic vibrator 12 Ultrasonic oscillator 13 Baffle plate 15 Solution supply device 20 Needle electrode 21 Insulator 22 Downward point 25 High voltage power supply device 30 Cylindrical electrode 31 Inner peripheral surface 32 Lower end inner periphery 33 Cutting Notch groove 40 Body portion 41 Expanded portion 41a Expanded portion inner peripheral surface 42 Side peripheral portion 43 Opening 45 Outer peripheral wall 50 Dust collecting portion 51 Adhered surface 60 Mist blower fan 70 Nanomist blower fan (W) Solution (M ) Mist (NM) Nano mist

Claims (8)

In the dissolved substance precipitation removal device that separates and removes the substance dissolved in the solution by drying and precipitation,
A fog generator for generating mist from the solution;
A needle electrode that is arranged at a site to which the mist generated by the fog generating device is guided and is provided so that the tip extends upward and to which a high voltage is applied;
A cylindrical shape is provided above the needle electrode, and is concentric with at least the tip of the needle electrode so as to be equidistant with respect to the entire circumference of the inner periphery of the circular lower end edge that is closest to the tip of the needle electrode. It is arranged in a vertically standing state, is grounded, and corona discharge is performed between the needle electrode and the cylindrical inner peripheral surface to generate an upward flow of ion wind, and the mist is refined to produce nano mist. A cylindrical electrode to be generated;
A dust collecting portion having an adherend surface disposed above the cylindrical electrode and grounded so that the fine particles adhere so as to attach and take out the fine particles generated by the precipitation of the substance dissolved in the solution. A device for depositing and removing dissolved substances, comprising:   The dissolved substance according to claim 1, further comprising a cutout groove formed by cutting out at an inner periphery of a lower end edge of the cylindrical electrode so that droplets generated by aggregation on the cylindrical electrode can easily flow. Precipitation removal equipment.   A body portion including the needle electrode so as to support the cylindrical electrode, wherein the body portion is formed in a conical cylindrical shape that gradually increases in diameter toward a lower portion immediately below the cylindrical electrode. The apparatus for depositing and removing a dissolved substance according to claim 1 or 2, wherein an inner peripheral surface of the enlarged diameter portion is provided in a porous shape in the diameter portion. Dissolved substance precipitation removal device.   In order to facilitate the flow of liquid droplets formed by aggregation on the needle electrode, it has a downward apex formed at the bent portion extending from the front end portion of the needle electrode to the supported portion on the rear end side. The apparatus for depositing and removing a dissolved substance according to any one of claims 1 to 3.   The dissolved substance precipitation removing apparatus according to any one of claims 1 to 4, wherein the mist generating apparatus includes, as a constituent element, an ultrasonic vibrator disposed so as to be in contact with the solution.   The precipitation of the dissolved substance according to any one of claims 1 to 5, further comprising a nanomist blowing fan that blows out the nanomist generated by being refined by passing through the cylindrical electrode. Removal device.   The mist blowing fan that blows air so as to send out the mist into the body portion between the portion where the mist is generated and the needle electrode is provided. Dissolved substance precipitation removal device. In the method for depositing and removing dissolved substances, the substance dissolved in the solution is dried and precipitated to separate and remove,
Generating mist from the solution by means of a fog generator;
Guiding the mist to a space where a high voltage is applied and corona discharge is performed, and generating the nano mist by refining the mist by the corona discharge;
Guiding the nanomist to a dust collecting portion having a surface to be adhered so that the fine particles adhere, and attaching and taking out the fine particles generated by the precipitation of the substance dissolved in the solution. A method for precipitating and removing dissolved substances.

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