KR200197735Y1 - mixed oxygen supply device and agitator of using injector - Google Patents

Abstract

The oxygen supply unit and the stirring device are united for biological treatment of wastewater and waste water by using the injector, and the agitation treatment is performed while supplying oxygen under aerobic conditions according to the conditions of the treatment tank. This is done.

The present invention, an injector for mixing the treated air with the treated water to compensate for the negative pressure generated when the treated water in the treatment tank of the main chain passes through its nozzle, the joint of the injector and the actuator of the injector A pump for supplying the injector to the injector by discharging the treated water as a main body of agitation, and a suction control valve configured to adjust the suction amount of the external air passing through the suction port when the treated water passes through the nozzle.

As a result, by using the injector, the structure of the oxygen supply device and the stirring device is unified in the biological treatment of wastewater, wastewater, etc., thereby greatly reducing the investment cost and the cost cost of the facility. Since no noise is generated during use, it creates a pleasant working environment and reduces maintenance costs including power costs compared to conventional oxygen supply devices. By reducing the incidence of failures due to simplified structures and processes, the cost of follow-up and maintenance can be significantly reduced. It prevents the performance of the injector during use and can be used semi-permanently, which has the advantage of having reliability and price competitiveness of the product in the art.

Description

Mixed oxygen supply device and agitator of using injector}

The present invention relates to a combined oxygen supply and stirring device to reduce the cost of the structure by simplifying the structure of the oxygen supply unit and the stirring device using the injector.

More specifically, the injector is agitated while supplying oxygen under aerobic conditions by treating the wastewater, wastewater, etc. according to the conditions of the treatment tank during biological treatment, and in the anaerobic condition, only stirring is performed while the oxygen supply is stopped. It relates to a composite oxygen supply and stirring device in water.

In general, biological treatment methods using aerobic microorganisms, anaerobic microorganisms and the like are used when biologically treating the treated water, such as in an ozone dissolving device in a drinking water treatment plant and an aeration device in a wastewater treatment plant.

In particular, recently, due to the strengthening of environmental laws, advanced processing technologies have been developed that remove not only organic matter but also nutrients such as nitrogen and phosphorus by using the aforementioned microorganisms.

The characteristics of the above-described advanced treatment technology are different from those of the previous standard activated sludge process, long-term aeration method, aerobic digestion method, anaerobic digestion method with fixed aeration tank, anaerobic tank, and anaerobic tank, which are highly dephosphorized and denitrified. Since the treatment is performed, a change in conditions such as aerobic, anaerobic, and anaerobic occurs depending on the process in the treatment tank.

In other words, in the aerobic conditions of the treatment tank, supply sufficient oxygen to the treatment tank to maximize the activity of aerobic microorganisms, and in the anaerobic or anaerobic conditions of the treatment tank, the activity of anaerobic microorganisms through a sufficient agitation process while blocking the supply of oxygen. Should be maximized.

Conventionally used oxygen supply device is a blower (compressor) to compress the air in the atmosphere of 0.4 ~ 1.2㎏ / ㎠ about a diffuser (diffuser) to make the fine air bubbles to disperse in the water of the treatment tank and They consist of pipes that are connected to each other so that compressed air does not leak.

However, when oxygen is normally supplied to treated water in a treatment tank such as a wastewater treatment plant, the agitation is smoothly performed. On the other hand, when the supply of air to the treated water of the treated tank is stopped, the stirring effect does not occur. The activity of the microorganisms is reduced and the water treatment is not made normally.

In consideration of these problems, when a separate agitator is installed in the treatment tank and the air is not supplied from the outside, the treated water in the treatment tank is agitated by driving the agitator. Due to the dual structure, the high investment cost and cost cost are increased due to the double investment of equipment.

In addition, there is a problem that the post-maintenance and maintenance costs increase due to the high failure rate due to a complicated process. Since a separate power source is required to drive the oxygen supply device, the maintenance cost of the facility, including the power cost according to the use of the power source, is increased, resulting in a problem of inferior product reliability.

In addition, since the noise generated when using the above-described air compressor about 70 ~ 95db has a problem that forms a poor working environment atmosphere.

In addition, due to the supply of compressed air to the treated water in the treatment tank, the discharge part of the diffuser that generates fine bubbles may cause clogging during use, resulting in deterioration of performance, and the replacement of those within the service life of one to three years is required. In addition to increased maintenance costs, there is a problem in that the price competitiveness of the product in the field is lost.

Therefore, an object of the present invention, the injector to unify the structure of the oxygen supply device and the stirring device in the biological treatment of wastewater, waste water, etc. by using the injector to significantly reduce the investment cost and the cost cost of the equipment due to the simplified structure To provide a composite oxygen supply and stirring device in water.

Another object of the present invention is to create a comfortable working environment because no noise is generated during use, and to provide a complex underwater oxygen supply and stirring device using an injector to reduce the maintenance cost including power costs compared to the conventional oxygen supply device. It is.

It is still another object of the present invention to provide a complex underwater oxygen supply and agitation apparatus using an injector that can significantly reduce the cost of post-management and repair by reducing the failure rate due to the structure and process simplification.

Still another object of the present invention is to provide a composite underwater oxygen supply and agitation apparatus using an injector which prevents the performance of the injector from deteriorating during use and has semi-permanent use so as to have reliability and price competitiveness of products in the art. .

Figure 1 (a, b, c, d) is a modified example of the oxygen supply and stirring device in water using the injector according to the present invention,

Figure 2 is an enlarged cross-sectional view of the injector used in the complex underwater oxygen supply and stirring device using the injector according to the present invention,

3 is a view showing that the combined oxygen supply and stirring device in the water using the injector according to the present invention is applied to the treatment tank.

* Explanation of symbols used in the main part of the drawing

10; Treatment tank

11; Nozzle

12; Injector

13; Pump

14; Suction port

15; Suction Control Valve

An object of the present invention as described above, the injector for mixing the treated air with the treated water to compensate for the negative pressure generated when the treated water of the treatment tank of the main chain passes through its nozzle, and the injector is connected to the injector of the injector Suction control valve is formed in the inlet of the pump and the injector to discharge the prime mover and the treated water as a main body of stirring and the inlet of the treated water when the treated water passes through the nozzle. In the aerobic condition according to the conditions of the treatment tank, the suction control valve is opened to supply oxygen to the treated water while stirring treatment, in the anaerobic and anoxic conditions by closing the suction control valve to the oxygen in the treated water Complex water using the injector, characterized in that the supply is stopped so that only stirring An oxygen supply and a stirrer, is achieved by providing.

According to a preferred embodiment, pressurized water using gravity may be used as a main body for stirring the prime mover and the treated water of the injector.

According to a preferred embodiment, the injector has a first body having a nozzle through which the treated water flowing through its inlet passes and a suction port through which the external air is sucked to compensate for the negative pressure generated when the treated water passes through the nozzle. And a second body having a diameter larger than a diameter of the nozzle part and formed to be detachably divided with respect to the first body, and between the nozzle part and the discharge part when the first body and the second body are mutually coupled to each other. And a ring-shaped suction effective space portion formed to minimize friction and eddy current resistance of the suction material passing through the suction port.

According to a preferred embodiment, the pump and the injector are installed in the treatment tank.

According to a preferred embodiment, the pump and the injector are installed outside the treatment tank.

According to a preferred embodiment, the pump is installed outside the treatment tank and the injector is installed inside the treatment tank.

According to a preferred embodiment, the injector is connected to the pump in parallel and installed in the treatment tank.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art in order to facilitate understanding of the present invention. This does not mean that the technical scope of the present invention is limited.

As shown in Fig. 1 to 3, the liquid as a prime mover, the suction material of the liquid or gas is sucked and mixed, the aeration device in the waste water treatment plant, the ozone dissolving device in the water treatment plant, the oxygen supply device of the fish farm. The present invention is applied to a device for supplying oxygen or agitating them biologically (aerobic or anaerobic treatment) according to the conditions of a treatment tank such as a liquid fertilizer supply device in agriculture.

Therefore, according to a preferred embodiment of the present invention, the treated water and the external air sucked through the suction port 14 to compensate for the negative pressure generated when passing through the nozzle 11 of the main chain treatment tank (10) An injector 12 to be mixed with a pump 13 which is connected to the injector 12 and discharges the prime mover and the treated water of the injector 12 as a main body of agitation, and supplies the injector 12 to the injector 12; 14) is provided in the suction port, and the treatment process includes the suction control valve 15 for adjusting the suction amount of the external air passing through the suction port 14 by negative pressure generation when the treated water passes through the nozzle 11, In the aerobic condition, the suction control valve 15 is opened in accordance with the condition of the water tank 10, and the stirring treatment is performed while supplying oxygen to the treated water, and the suction control valve 15 is closed in the anaerobic and anaerobic conditions. To stop the oxygen supply to the treated water It was to break.

Preferably, pressurized water using gravity may be used as a main body for stirring the prime mover of the injector 12 and the treated water of the treated water tank 10.

As shown in FIG. 1A, the pump 13 described above may be installed inside the treatment tank 10, and the injector 12 may be installed outside the treatment tank 10.

As shown in FIG. 1 (b), the pump 13 and the injector 12 described above may be installed in the treatment tank 10.

As shown in FIG. 1 (c), the aforementioned pump 13 and injector 12 may be installed outside the treatment tank 10.

As shown in FIG. 1 (d), the aforementioned pump 13 may be installed outside the treatment tank 10 and the injector 12 may be installed inside the treatment tank 10.

On the other hand, as shown in Figure 2, the injector 12 described above is the nozzle 11 and the external air through which the fluid of the above-described processing water flowing through the inlet 16 of its own is driven by The diameter of the first body 17, the suction inlet 14 is formed due to the negative pressure generated when the flow rate increases, and the diameter formed larger than the diameter of the nozzle 11 in the range of 1.0% to 20.0% When the discharge portion 18 is formed and the second body 19 and the first body 17 and the second body 19, which are detachably divided with respect to the first body 17, are screwed together. It is provided between the nozzle 11 and the discharge portion 18 is provided with a ring-shaped suction effective space portion 20 to minimize the friction and eddy resistance of the suction material passing through the suction port 12.

Reference numeral 23 is a pipe connecting the pump 13 and the injector 12 described above.

Hereinafter, with reference to the accompanying drawings, the oxygen supply and stirring device in the complex water using the injector according to the present invention is as follows.

As shown in FIGS. 1 to 3, as the treated water in the treated water tank 10, such as a wastewater treatment plant, is discharged due to the driving of the pump 13, the treated water used as the prime mover of the injector 12 is pressurized. And flows through the inlet 16 of the injector 12 described above along the pipe 23 and passes through the nozzle 11 described above.

At this time, as the diameter of the discharge portion 14 of the injector 12 described above is larger than the diameter of the nozzle 11 in the range of 1.0% to 20.0%, the frictional resistance of the fluid passing through the nozzle 11 is reduced. Since the pressure loss of the fluid due to friction can be reduced, the flow rate of the fluid passing through the nozzle 11 can be increased.

Meanwhile, the Bernoulli theorem states that while the flow velocity of the fluid flowing along the flow path of the nozzle 11 becomes faster, the flow velocity becomes maximum at the moment passing through the nozzle 11, while the pressure of the fluid is inversely proportional to the flow velocity. By this, the pressure of the fluid passing through the discharge portion 18 is minimized.

Therefore, when the treatment tank 10 described above is an aerobic condition, the inlet control valve 15 formed in the inlet 14 of the injector 12 described above is kept open, and thus the discharge unit 18 described above. The external air is sucked through the above-described suction control valve 15 and the suction port 14 and mixed with the fluid passing through the furnace 11 by the negative pressure formed therein.

At this time, the suction amount of the external air through the suction port 14 by the suction effective space portion 20 formed in a ring shape between the nozzle 11 and the discharge portion 18 to minimize frictional resistance and eddy current resistance of the external air. To maximize.

On the other hand, the outside air passing through the above-described suction port 12 and the suction effective space portion 16 in the circumferential direction with the aforementioned suction effective space portion 20 between the nozzle 11 and the discharge portion 18 described above. Since it is injected to the fluid through the external air outlet 21 of the fine gap formed in communication with each other, after the external air is completely mixed with the treated water passing through the furnace 11, the treatment tank 10 through the outlet 22 To be supplied.

At this time, the external air sucked through the above-described suction port 14 is pulverized into fine bubbles in the process of mixing with the treated water and supplied to the treated water tank 10 along the treated water, thereby increasing the amount of dissolved oxygen in the water in the treated water tank 10. I can do it.

On the other hand, when the above-described treatment tank 10 is anaerobic and anoxic conditions, the suction of the external air through the inlet 14 is blocked by closing the inlet control valve 15 of the inlet 14, the pump The treatment water of the treatment tank 10 discharged due to the driving of the 13 is pressurized when passing through the nozzle 11 of the injector 12 so as to be supplied to the bottom of the treatment tank 10 so as to stir the treatment water. Will be.

On the other hand, as shown in Fig. 1 (d) and 3, the above-described pump 13 is installed on the outside of the treatment tank 10, the joint to the pump 13 in parallel through the pipe 23 in parallel The modified example in which the plurality of injectors 12 are provided inside the treatment tank 10 will be described in more detail.

That is, Figure 3 (a) is installed in a plurality of injectors 12 horizontally on the upper portion of the treatment tank 10, each outlet 22 of the injector 12 is disposed so as to face the bottom of the treatment tank (10). It is. For this reason, the fluid or external air mixed while passing through the injector 12 described above is aerated in the downward direction from the upper portion of the treatment tank 10.

3 (b) is provided with a plurality of injectors 12 in the corners of the treatment tank 10, the outlet 22 of each of the injectors 12 are arranged so as to form a right direction. Therefore, the treated water of the treatment tank 10 is circulated as one direction in the direction of the arrow along the cross section of the treatment tank 10 by the fluid or external air discharged through the injector 12.

3 (c) shows that the plurality of injectors 12 are disposed in the center of the treatment tank 10 so that the treated water of the treatment tank 10 may be treated by the fluid discharged from the injector 12 or external air. It forms a vortex in the inside of (10), and is circulated.

In the following, the embodiment of the combined oxygen supply and agitation apparatus using the injector according to the present invention can be sufficiently understood by the following table, and thus it is not to limit the scope of the present invention.

Example 1

Treatment tank Inflow capacity (㎥ / hr) Pump Injector Required dissolved oxygen (ppm) Remarks Dimensions (m) (L) × (W) × (D) Capacity (㎥) Power (Kw) Discharge Pressure (㎏ / ㎠) Port size Quantity 7.8 × 3.8 × 4.5 133.4 83.3 15 1.2 50 A 14 2.5

Example 2

Treatment tank Inflow capacity (㎥ / hr) Pump Injector Required dissolved oxygen (ppm) Remarks Dimensions (m) (L) × (W) × (D) Capacity (㎥) Power (Kw) Discharge Pressure (㎏ / ㎠) Port size Quantity 7.8 × 3.8 × 4.5 133.4 83.3 5.5 1.2 50 A 5 1.0

Example 3

Treatment tank Inflow capacity (㎥ / hr) Pump Injector Required dissolved oxygen (ppm) Remarks Dimensions (m) (L) × (W) × (D) Capacity (㎥) Power (Kw) Discharge Pressure (㎏ / ㎠) Port size Quantity 7.8 × 3.8 × 2.5 30.6 2.1 1.5 1.2 50 A 2 2.0

That is, in Examples 1 and 2, in the case of treating a treatment tank having a capacity of 133.4 (m 3), respectively, the power of the pump is 15 (Kw) and 5.5 (Kw), and the amount of dissolved oxygen when using 14 and 5 injectors is used. 2.5 (ppm) and 1.0 (ppm).

On the other hand, in the case of treating the treated water tank having a capacity of 30.6 (m 3) in Example 3, the power of the pump is 1.5 (Kw), and the dissolved oxygen amount is 2.0 (ppm) when two injectors are used.

As a result, in the combined underwater oxygen supply and agitation apparatus using the injector according to the present invention, a facility cost is reduced by 10 to 20% compared with the case of using a conventional air supply device such as a blower and a diffuser. It can be confirmed that the power is reduced by 20 to 30%.

In addition, even when a small amount of oxygen is supplied to the treated water as compared to the conventional air supply device, due to the stirring effect of the pressurized water, it is excellent in the transfer effect of oxygen to the treated water, so that the amount of dissolved oxygen in the entire treated water tank is equalized.

In addition, when using a conventional air compressor, the noise produced 70 ~ 95 (db).

On the other hand, it was confirmed that the noise is not generated at all in the oxygen supply and stirring device in the complex using the injector according to the present invention.

As described above, according to the preferred embodiment, the structure of the oxygen supply device and the stirring device in the biological treatment of wastewater, waste water, etc. using the injector can be unified, thereby greatly reducing the investment cost and the cost cost of the facility. Will be.

On the other hand, no noise is generated during use to create a pleasant working environment, and it is possible to reduce maintenance costs, including power costs, compared to conventional oxygen supply devices.

On the other hand, by reducing the failure rate due to the structure and process simplification can significantly reduce the cost of follow-up and maintenance.

On the other hand, it prevents the performance of the injector deteriorated during use, it can be used semi-permanently has the advantage to have the reliability and price competitiveness of the product in the art.

Claims (7)

An injector for mixing the treated air with the treated water so as to compensate for the negative pressure generated when the treated water in the driven chain treated water passes through its nozzle; A pump which is connected to the injector and discharges the prime mover of the injector and the treated water as a main body of agitation to supply the injector; And A suction control valve formed at the inlet of the injector and adjusting the suction amount of external air passing through the suction port when the treated water passes through the nozzle; And agitation while supplying oxygen to the treated water, and in anaerobic and anaerobic conditions, the suction control valve is closed to stop oxygen supply to the treated water so that only stirring is performed. Feeding and stirring device. The apparatus of claim 1, wherein pressurized water using gravity is used as a main body for stirring the prime mover and the treated water of the injector. 3. The injector of claim 1 or 2, wherein the injector; A first body having a nozzle through which the treated water flowing through its inlet passes and a suction port through which the outside air is sucked to compensate for the negative pressure generated when the treated water passes through the nozzle; A second body having a discharge portion having a diameter larger than the diameter of the nozzle portion, the second body being detachably divided with respect to the first body; And And a ring-shaped suction effective space portion formed between the nozzle part and the discharge part when the first body and the second body are mutually coupled to minimize friction and eddy resistance of the suction material passing through the suction port. Complex underwater oxygen supply and stirring device using an injector. 2. The apparatus of claim 1, wherein the pump and the injector are installed inside the treatment tank. 5. The apparatus of claim 1 or 4, wherein the pump and the injector are installed outside the treatment tank. The apparatus of claim 1 or 4, wherein the pump is installed outside the treatment tank and the injector is installed inside the treatment tank. The apparatus of claim 1, wherein the injector is connected to the pump in parallel and installed in the treatment tank.