JPH03109997A - Method and device for improving dissolved oxygen content of massive water - Google Patents

Abstract

PURPOSE:To rapidly increase the dissolved oxygen content by supplying previously produced high-oxygen water into the pumped water by an intermittent air pumping device and diffusing the high-oxygen water into treated water as the pumped water diffuses. CONSTITUTION:The water in the water basin to be treated is pumped up by a pump 3 from an intake pipe 2 and supplied to a water treating tank 4. Meanwhile, air is supplied to an air treating tank 6 by a pump 5, and nitrogen is adsorbed from the introduced air to obtain high-oxygen air which is compressed and supplied to the tank 4 from the treating tank 6 through an air pipe 7 as shown by the arrow 8. The air is sucked from the suction pipe 1 of the pump 5 and also introduced from the vent pipe 9 of the tank 4. The water droplets are brought into contact with the high-oxygen air in the tank 4 in the conventional manner to dissolve the oxygen in the high-oxygen air, the high-oxygen contg. water is produced rapidly and high-oxygen contg. water is forced into the lower part of the intermittent air-lift device 12 by a pipe 10 as shown by the arrow 11 and mixed with the pumped water, and the dissolved oxygen content of the pumped water is improved.

Description

Detailed Description of the Invention (Industrial Application Field) This invention supplies high oxygen water to the pumped water of an intermittent air pumping device, and diffuses the high oxygen water as the pumped water spreads.
The present invention relates to a method and apparatus for improving the amount of dissolved oxygen in a large amount of water for the purpose of improving the amount of dissolved oxygen.

(Prior Art) Conventionally, an intermittent air pumping device has been used to improve the amount of dissolved oxygen in large volumes of water.
By installing an intermittent air pumping device with a pumping tube 50cm in diameter for a water volume of 500,000 liters to 1,000,000 tons, the amount of dissolved oxygen was improved.

(Problem to be Solved by the Invention) However, in relatively high temperature regions (e.g. tropical or subtropical areas), water areas with a thin saturated oxygen water layer formed on the water surface, or water depths that are large (e.g. 50+n or more) and the deep layer is anoxic. In areas where water levels are low, it may be difficult to resolve oxygen shortages even with the installation of intermittent air pumping equipment. In particular, when the bottom of the water is in an aerobic state with a large amount of organic matter or sediment, a large amount of oxygen is required to decompose it through the growth of aerobic microorganisms. There were some problems, such as the fact that there were cases where it was not enough.

(Means for Solving the Problems) However, the present invention provides highly concentrated oxygen water as quickly as possible by supplying pre-generated high oxygen water (supersaturated oxygen water) to the pump cylinder of an intermittent air pumping device. They succeeded in rapidly increasing the amount of dissolved oxygen by effectively diffusing it into the treated water area.

That is, the method of the present invention is characterized in that pre-produced high-oxygen water is supplied into the pumping water of an intermittent air pumping device (1), and the high-oxygen water is diffused into the treated water area as the pumped water spreads. This is a method for improving the amount of dissolved oxygen in large amounts of water.

In addition, if the intermittent air pumping device is a two-stage pumping cylinder,
; A partial water pump and a lower water pipe, or either one of them. Next, high-oxygen water is produced by supplying high-oxygen air to water collected from a treated water area.

Furthermore, the device of the present invention is characterized in that a high oxygen water supply device is connected to a high oxygen water generation device connected to a water intake means, and the water supply means of the high oxygen water supply device is connected to a water pumping cylinder of an intermittent air pumping device. This is a device for improving the amount of dissolved oxygen in large amounts of water.

Further, the water intake means is a pump in which a water intake pipe and a discharge pipe are connected. Next, the water supply means is a pump and a water pipe. Furthermore, the intermittent air pumping device is a η1 cylinder device,
It is a dual-tube device or a two-stage device.

The pumping cylinder of the intermittent air pumping device in the above has a diameter of 30 cm.
It is about 80 cm to 80 cm, and the length is about 5 m to 50 m. Furthermore, by using a plurality of water pumps in a bundle, it is possible to expect the same effect as when using water pipes with a diameter of about 1 m to 3 m in practical use. Furthermore, the water pump can be arranged in two stages, upper and lower, so that the lower water tank is used for circulation in the deep water layer and the upper water tank is used in the circulation of the shallow water layer. Further, the high oxygen water can be supplied only to the lower water pump, or can be supplied to the upper and lower water pipes respectively.

In the above, the high oxygen water is characterized in that it is produced by blowing high oxygen air (oxygen content 6096 to 90%) into low oxygen water or anoxic water. Further, in order to cause the fluid to flow up and down discontinuously, an intermittent air pumping device is used as the driving force device.

The high oxygen water generation device of the present invention is provided with an air supply port on one side of the production base filled with a nitrogen adsorbent (for example, Ceolite l-), and a high oxygen air intake on the other side. It is connected to the treatment water tank.

As mentioned above, by adsorbing nitrogen in the air,
Generate high-oxygen air, blow this air into anoxic water or low-oxygen water to generate high-oxygen water, supply this high-oxygen water to water pumps installed at appropriate locations such as lakes and marshes, and diffuse it. Since lakes and marshes are agitated and flowed up and down using an intermittent air pumping device, it is possible to improve the amount of dissolved oxygen in lakes and marshes relatively easily.

It is assumed that the lakes and marshes that have undergone the above treatment contain, for example, 5 mg/9 of oxygen. Further, high oxygen air is air containing, for example, about 80% oxygen, and the nitrogen absorbent is one made of various zeolites.

(Function) Since the present invention supplies high oxygen water to the pumped water of the intermittent air pumping device, the high oxygen water diffuses as the pumped water spreads. Therefore, if high oxygen water is supplied only to the lower pumping cylinder of the two-stage pumping device, the amount of dissolved oxygen in only deep water can be rapidly improved.

(Example 1-) Next, the present invention will be described with reference to the embodiments shown in FIGS. 1 and 2.

Water in the treated water area is pumped up from a water intake pipe 2 by a pump 3 and supplied to a water treatment tank 4. On the other hand, air is supplied to the air treatment tank 6 by the pump 5, nitrogen is adsorbed from the air taken in by the air treatment tank 6 to make high oxygen air (e.g. 80% oxygen), and this high oxygen air is sent from the air treatment tank 6. Air is supplied under pressure to the water treatment tank 4 through the air pipe 7 as shown by the arrow 8. The air in the above is sucked in from the suction pipe of the pump 5, and is also drawn into the water treatment tank 4.
There is one that enters from the ventilation pipe 9. In the water treatment tank 4, water droplets and high-oxygen air are brought into contact with each other in the usual manner, thereby dissolving the oxygen in the high-oxygen air and rapidly forming high-oxygen water (for example, 40 mg/Q of oxygen).

The remaining air is sent to the suction side of the pump 5 again through the ventilation pipe 9. This high oxygen water is pumped by the pump 10 to the lower part of the intermittent air pumping device 12 as shown by the arrow 11-, and mixed with the pumped water. For example, if 5 tons of high-oxygen water with an oxygen content of 40 mg/β is supplied per minute, 40 tons of water with an oxygen content of 5 mg/β can be obtained. Therefore, 2,400 tons per hour and 77,600 tons per day.
The amount of dissolved oxygen in water can be improved. For example, the high oxygen water supplied as indicated by arrow 11 in Fig. 2 is
Intermittent air hunting water system] 2 is supplied to the lower part of the lower water pumping cylinder 13, and as the water is pumped up, it rises as shown by the arrow 15 and reaches the guide plate 14.
14a, and circulates in the deep water layer as shown by arrows 16, 17, 18, and 19, and can improve the amount of dissolved oxygen in the core. In the figure, 20 is an upper water pump, 2] is a water surface, and 22 is an embankment.

(Embodiment 2) Next, the apparatus of the present invention will be explained with reference to FIGS. 3 to 6.

An air chamber 23 is fitted on the outside of the lower part of the lower water pumping part 3, and the upper water pumping pipe 20 is inserted into the upper part of the lower water pumping pipe 3 via the separating part 24.
Connect the bottom ends of. The air chamber 23 is connected to the lower water pumping cylinder 13
A short tube 52 with a high concentration oxygen supply device 52a is connected to the lower end of the tube. An inner cylinder 25 is loosely fitted to the outside of the lower part of the lower lower water pumping cylinder 13, and an outer cylinder 26 is loosely fitted to the outside of the inner cylinder 25 at a predetermined distance, and a partition is provided between the inner cylinder 25 and the outer cylinder 26. A cylinder 27 was provided, and water holes 28 and 29 were provided in the lower part of the inner cylinder 25 and the upper part of the partition cylinder 27, respectively, to constitute the air chamber 23. In addition, a water passage hole 31 is bored in the water pumping cylinder wall of the two parts of the space 30 between the inner cylinder 25 and the lower water pumping cylinder 13.

In the above, the upper part of the air chamber 23 is closed by the top plate 48.48a, and the space 30 and the space 49 between the inner cylinder 25 and the partition cylinder 27 are closed.
The lower end of the is closed with a closing plate 50, and the partition tube 27 and the outer tube 2
The lower end of the space 51 of No. 6 communicates with the outside world as an opening 55. The high-concentration water supply device 52a includes an annular ring 52b provided outside the short tube 52, and a water supply pipe 5 extending outside the annular ring 52b.
3 are connected to each other, and a plurality of small water holes 54 are equally spaced in the annular ring 52b and the short cylinder wall. In the figure, 56 is an air supply hose for supplying pressurized air to the air chamber 23.

Next, in FIG. 3, a guide plate 14 is provided in an annular and horizontal manner over a predetermined length on the outside of the upper end of the lower water pump 1-3, and a truncated inverted conical separation plate 32 is provided above the guide plate 14. 32a are superimposed at a predetermined interval, and guide plates 4a are provided on three sides of the separating plates 32 and 32a in the same manner as the guide plates 14. An air chamber 34 is connected above the guide plate 4a through a water passage hole 33, and the lower end of the upper water pump 2o is connected to the upper part of the air chamber 34. The upper water pumping tube 20 has a plurality of water suction pipes 35, 35 connected downwardly, and a floating body 36, 36 is attached to the upper part. The air chamber 34 has a sixth
As shown in the figure, an inner cylinder 37 and an outer cylinder 38 are loosely fitted on the outside of the upper water pumping cylinder 20 with a predetermined interval maintained, and a partition cylinder 39 is provided between the inner cylinder 37 and the outer cylinder 38 to create a partition. Water holes 40 and 41 are formed in the upper part of the cylinder 39 and the lower part of the inner cylinder 37, respectively, and water holes 43 are provided in the upper water cylinder wall of the space 42 between the upper water cylinder 2o and the inner cylinder 37, and the upper water cylinder 37 is opened. The lower end of the air chamber 20 and the lower end of the space 42 and the lower end of the space 44 between the inner cylinder 37 and the partition cylinder 39 are respectively closed with closing plates 45 and 46, and the second part of the air chamber 34 is closed with a top plate 47.

The operation of the above embodiment will be explained.

First, when pressurized air is introduced from the air supply hose 56 as shown by the arrow 57 in FIG.
．． The water collects from the upper part of 51- and lowers the water level in the space. When the water level reaches the two water holes as shown by the chain line 58, the pressurized air in the air chamber 2B is 0. enters the lower water pump 13, forms an air bubble 64, and rises inside the lower water pipe 13 as shown by the arrow 65. Along with this, water is sucked in from the lower end of the water pipe as shown by the arrow 66. Pump water.

The air bubbles 64 are formed by the closing plate 4 at the lower end of the upper water pumping tube 20.
5 and is crushed, rises as shown by arrow 67 in FIG. 6, and accumulates in the air chamber 34.

On the other hand, the pumped water passes through the guide plate 4.1.4 a as shown by arrow 68 and spreads as shown by arrow 69. Said air chamber 3
The air accumulated in the air chamber 4 pushes down the water level in the same way as in the case of the air chamber 23, and when the water level reaches the chain line 70, each space and each water passage hole are opened as shown by arrows 71-172.73. After that, it is discharged into the upper water pumping cylinder 20 and becomes air bubbles 74 as shown by the arrow 7.
It rises like 5. On the other hand, water sucked in from the water suction pipe 35 as shown by the arrow 76 is also pumped up as shown by the arrow 75. In this way, the water is pumped from the upper end of the upper pumping cylinder 20 as indicated by the arrow 77.
It is released as shown by the arrow 78. and mixes with the water near the water surface.
Diffusion and reflux as shown in 79.80.

1 In addition, the lower water pump 1-3.20 has a weight 81 and a d body 3.
] to keep it upright. On the other hand, high oxygen water is supplied as indicated by the arrow 82 in FIG.
2, mixes with the pumped water, and rises as shown by arrow 83. As explained above, as the pumped water rises and spreads, arrows 16, 17, 18 in Fig. 2, ]9, the amount of dissolved oxygen in deep water can be gradually increased to achieve the purpose.

In the above embodiment, high oxygen water was supplied to the lower water pump, but high oxygen water can also be supplied to the upper water pump if necessary.

In the above embodiment, a two-stage intermittent air pumping device has been described, but it goes without saying that it can also be used in the case of a single cylinder. It can also be used in a composite tube made by bundling a plurality of single tubes.

(Embodiment 3) In this embodiment, as shown in FIG. 7, the structure of the upper air chamber 88 of Embodiment 2 is substantially the same as that of the lower air chamber 23.

2. That is, the air chamber 23 is fitted and fixed on the outside of the lower part of the lower water pumping tube 13, the short tube 52 is connected to the lower end of the lower water pumping tube 13, and the high concentration water supply device 52a is installed in the short tube 52. It is something. A ring 84 is fixed to the upper end of the lower water pump 13, several support rods 85 are provided upwardly projecting from the ring 84, and a guide plate 86 is supported at one end of the support rods 85. A convex portion 86a is provided in the center of the guide plate 86, and the convex portion 86
Several supporting legs 87 are projected in a circumferential manner onto the supporting legs 87, and the short tube 91- connected to the lower end of the upper water pumping tube 20 is connected to the supporting legs 87, and the air chamber 88 is connected to the lower end of the upper water pumping tube 20. Insert.

In the embodiment described above, pressurized air is supplied by connecting the air supply hoses 56.89 to the air chambers 23.88, and air bubbles are intermittently pumped from the air chambers 23.88 to the upper and lower water pumps 1-
3.20 Discharge into the water 1]j, raise the air bubbles and pump up the water.

In the above embodiment, the high concentration water supply devices 52a and 90 were provided at the lower end of each air chamber 23.88, but the high concentration water may be supplied from the middle of the water pump 13.20 at an angle of 34 degrees. Of course.

[Brief explanation of drawings]

Fig. 1 is a flow diagram of high oxygen water supply according to the present invention, Fig. 2 is a diagram of the implementation state of this invention, Fig. 3 is a partially cutaway front view of the water pumping device according to the present invention, and Fig. 4 is Similarly, FIG. 5 is an enlarged cross-sectional view of the lower air chamber, FIG. 6 is an enlarged cross-sectional view of the upper air chamber, and FIG. FIG. 2 is a partially omitted front view of the intermittent air pumping device according to the present invention. 1-... Suction pipe 2... Water intake pipe 4... Water treatment tank 6... Air treatment tank] 2... Intermittent air pumping device

Claims (1)

[Claims] 1. Dissolution in a large amount of water, characterized in that high oxygen water produced in advance is supplied to the pumping water of an intermittent air pumping device, and the high oxygen water is diffused into the treated water area as the pumped water spreads. Method 2 for improving oxygen content Method 3 for improving dissolved oxygen content in a large amount of water according to claim 1, in which the intermittent air pumping device is an upper pumping cylinder and/or a lower pumping cylinder in the case of a two-stage pumping cylinder. Water is generated by supplying high-oxygen air to water collected from a treated water area. Method 4 for improving the amount of dissolved oxygen in a large amount of water according to claim 1. Dissolved oxygen content improving device for large amounts of water, characterized in that a water supply device is connected to the water supply device, and the water supply means of the high oxygen water supply device is coupled to a water pumping tube of an intermittent air pumping device. The device for improving the amount of dissolved oxygen in a large amount of water according to claim 4, wherein the water supply means is a pump and a water pipe. The device for improving the amount of dissolved oxygen in a large amount of water according to claim 4, which is a single-tube device, a double-tube device, or a two-stage upper and lower tube device.