JP3208394B2 - Oxygen dissolution method using water pressure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for supplying a high concentration of dissolved oxygen to lakes, dams, lakes, and sea areas, particularly to deep water areas and low layers where dissolved oxygen is insufficient.

[0002]

2. Description of the Related Art In a dam lake or the like, as a means for supplying oxygen dissolved in a deep water area or a low layer at a high concentration, an upright pipe is provided in a deep water area, and compressed air is blown into the pipe so that an upward flow accompanying the rise of bubbles is caused. There are known methods for generating convection and causing convection, and supplying compressed air to a submersible pump installed on the bottom of the water to stir.

[0003]

However, among the above-mentioned methods, the method of blowing air into the deep portion only generates an upward flow of bubbles, but does not increase the dissolving efficiency. It is generally known that the expected dissolution efficiency of a liquid under pressurized conditions increases according to Henry's law,
Even if the air bubbles blown into the deep water area only at the moment of blowing, the air pressure exceeds the water pressure and the law is established, the intended solubility was extremely low.

The present invention addresses the above-mentioned situation, and pays particular attention to the use of natural water pressure to send finely pulverized bubbles near the water surface to a deep water area by vortex and natural flow, and to use the water pressure to release oxygen. It is intended to increase the amount of dissolved oxygen by dissolving under pressure and supplying oxygen to dam lakes and deep water areas of the sea.

[0005]

That is, a feature of the present invention that meets the above-mentioned object and achieves the intended object is that a gas-liquid mixing tank floated on the water surface is provided with a liquid level higher than the upper part of the outer periphery of the tank. On the other hand, by injecting water from obliquely above, the oxygen in the tank is entrained and the bubbles are miniaturized.At the same time, a vortex is generated and the water flows down naturally from the lower part of the tank through a hose or a spiral pipe. It is an oxygen-dissolving method using water pressure that dissolves and increases the amount of dissolved oxygen in deep water at a required water depth.

Here, as the water jetted from obliquely above the liquid surface, not only water pumped by a submersible pump but also water from an upper dam having a water level difference or an inflowing river can be used. Alternatively, the use of water supplied from a combination thereof is preferred.

Further, by sealing the upper portion of the gas-liquid mixing tank while leaving the ventilation valve portion, expensive gas such as oxygen, ozone and carbon dioxide can be dissolved without waste.

[0008] Claims 4 to 5 are devices for carrying out the above-mentioned dissolving method, and claim 4 is a basic structure thereof, wherein the upper part is sealed with a vent valve portion left, the lower end is opened and the lower part is opened. It consists of a gas-liquid mixing tank to which a hose or a spiral pipe is connected. This tank is configured to be able to float on the surface of the water, and water is generated from the upper part of the tank at an angle from the tank upper part to the liquid level in the tank. A feature is provided in which an injection nozzle for injecting air toward the nozzle is provided.

[0009]

[0010] The invention of claim 5 is Ri preferred embodiment der oxygen dissolving device having upper Symbol configuration, as JP <br/> Features in that a stirring pump to the lower or bottom portion of the hose or spiral pipes I have.

[0011]

In the oxygen dissolving method and apparatus of the present invention, the water pumped by a submersible pump or the like is sprayed obliquely upward from above the water surface of the gas-liquid mixing tank, thereby entraining the oxygen in the upper part of the tank and minimizing the eddy current. generate. These finely divided bubbles pass through a hose etc. into the deep water area with high water pressure along with the vortex, flow naturally, and gradually become smaller under the water pressure,
It loses buoyancy and is dissolved and can supply oxygen to deep waters and low seas.

[0012] At this time, to allow a wide range of oxygen supply by the hose lower end or bottom provided agitation pump.
Simply easy if adjustable length of the hose to be connected to the tank bottom if necessary to enable the supply of oxygen to the water depth of interest.

When a ventilation valve is provided in the upper part of the tank, the atmosphere can be involved by opening the ventilation valve in the upper part. On the other hand, if the upper portion of the tank is sealed, expensive gases such as oxygen, ozone, and carbon dioxide can be dissolved without waste.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic view showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a plan view of an essential part thereof.
Indicates a gas-liquid mixing tank.
Is disposed so as to float above the water surface L. The upper surface is sealed with a ventilation valve 3 part, the lower end is open and the lower side is provided with a hose or spiral via a pressure regulating valve 4. The pipe 5 is connected.

In the gas-liquid mixing tank 1, a nozzle 8 for injecting water pumped by a submersible pump 6 or the like through a pipe 7 or water flowing down from an upstream dam 6 'is provided in the upper part of the tank. The nozzle 8 is provided so as to spray water from obliquely above the liquid level in the tank from the upper part in the tank, and the tip of the nozzle 8 is directed to the side to generate a vortex on the liquid level in the tank. I have.
In the illustrated example, the upper surface of the tank 1 has the ventilation valve 3 and is in a closed state. However, even if the tank 1 is open, there is no problem. However, in order to dissolve expensive gas such as oxygen, ozone, and carbon dioxide gas without waste, it is preferable that the upper surface be in a closed state.

The tank 1 can be entrapped with the atmosphere by opening the ventilation valve 3 at the top, but it is also possible to connect an oxygen generator 10 and supply oxygen from the upper surface of the tank 1 as appropriate. At this time, the water level is detected by the water level sensor 11, and the amount of oxygen supplied into the tank 1 is adjusted by interlocking the solenoid valve 9 to keep the water level constant.

Although the tank 1 is floated on the water surface in the illustrated example, the above-described device may be incorporated in a barge or ship. In this case, water is pumped by a submersible pump, and a generator and an oxygen generator 10 are mounted on the tank.
It is advantageous to feed in. In addition, the water injected from the upper part of the tank can use not only the water pumped by the submersible pump 6 but also the water from the upstream dam 6 'or the inflowing river having a difference in water level.
You may use together suitably.

On the other hand, the pressure regulating valve 4 provided at the lower end of the tank can increase the pressure in the tank, and can also dissolve it under pressure. The length of the hose or the helical pipe connected to the lower portion can be adjusted appropriately, or oxygen can be easily supplied to the intended water depth by using a hose or a helical pipe having different lengths. In this case, the dissolution efficiency improves as the discharge water depth increases. In particular, if a stirring pump 12 or the like is provided at the lower end or the bottom of the hose or the like as shown in the figure, oxygen can be supplied over a wider range.

Thus, water is obliquely introduced into the water surface of the gas-liquid mixing tank 1 in the oxygen dissolving apparatus and the oxygen in the upper part of the tank is prevented from being micronized. It naturally flows down through a hose or the like 5 and gradually becomes smaller under water pressure, loses buoyancy and is dissolved and can supply oxygen to deep water areas and lower layers. The above description is an example of the present invention, and the present invention is not limited to the above, and it is needless to say that the present invention can be appropriately modified without departing from the gist of the present invention.

[0021]

As described above, according to the present invention, water supplied by a submersible pump or the like is obliquely above the liquid level from the upper part of the outer periphery of the tank into the tank with the lower end opened above the water surface. This is a method of dissolving oxygen using water pressure by injecting, making bubbles entrained with oxygen finer and generating a vortex, allowing the hose connected to the lower part of the tank to flow naturally and using water pressure to supply oxygen. By spraying the spilled water obliquely from above onto the water surface of the bubble mixing tank, the oxygen in the upper part of the tank is entrained and a vortex is generated while miniaturizing it. The water gradually flows down through the water and gradually becomes smaller under the water pressure, eventually losing its buoyancy and supplying dissolved oxygen to deep waters and low waters, reducing the amount of dissolved oxygen in deep waters. It has a remarkable effect of increasing by.

Further, the apparatus for carrying out the above method can increase the pressure in the tank by providing a pressure adjusting valve at the lower end of the tank together with the above-mentioned effects, so that it can be more efficiently pressurized and melted. By providing a stirring pump or the like at the lower end or bottom, oxygen can be supplied over a wider range. Further, by adjusting the length of the hose connected to the lower portion of the tank, there is an advantage that oxygen can be easily and easily supplied to a target water depth. Further, if the upper part of the tank is sealed, expensive gas such as oxygen, ozone, carbon dioxide gas can be dissolved without waste, and there is also a feature that it can be easily moved as a surface floating type. The device of the present invention can be used in a wider area if the device is incorporated in a barge or ship and a generator and an oxygen generator are mounted.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of the oxygen dissolving apparatus of the present invention, in which the inside of a tank is shown in a cross section.

FIG. 2 is a schematic plan view of the inside of a tank in the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas-liquid mixing tank 2 Float 3 Vent valve 4 Pressure control valve 5 Hose or spiral pipe 6 Submersible pump 6 'Upstream dam 7 Water pipe 8 Injection nozzle 9 Solenoid valve 10 Oxygen generator 11 Water level sensor 12 Stirring pump

Claims (5)

(57) [Claims] The present invention relates to a gas-liquid mixing tank floated on a water surface, wherein water is sprayed from obliquely above the liquid surface from the upper part of the outer periphery of the tank to entrain oxygen in the tank, thereby minimizing bubbles. A vortex is generated and allowed to flow naturally from the lower part of the tank through a hose or a spiral pipe, the oxygen is dissolved using the water pressure, and the amount of available oxygen in the deep water at the required water depth is used. Oxygen dissolution method. 2. The water injected from obliquely above the liquid surface is water pumped by a submersible pump, water supplied from an upper dam having a water level difference, water from an inflowing river, or a combination thereof. The method for dissolving oxygen using water pressure according to claim 1. 3. The oxygen dissolving utilizing water pressure according to claim 1 or 2, wherein the upper portion of the gas-liquid mixing tank is hermetically sealed leaving a ventilation valve portion, and dissolves expensive gas such as oxygen, ozone, carbon dioxide gas without waste. Method. 4. A gas-liquid mixing tank having an upper part which is sealed leaving a ventilation valve part open, a lower part opened and a lower part connected to a hose or a spiral pipe, and the tank is configured to be able to float on the water surface. An oxygen dissolving apparatus using water pressure, wherein an injection nozzle for injecting water in a vortex generation direction from above the tank and obliquely above the liquid level in the tank is provided above the tank. 5. The oxygen dissolution apparatus utilizing the water pressure according to claim 4 Symbol mounting provided stirring pump to the lower part or the bottom part of the hose or spiral pipes.