KR200330487Y1 - Apparatus for Removing Foam of Discharge Water - Google Patents

Abstract

The present invention relates to a defoaming device of industrial facility discharge water, and more specifically, after the bubbles generated from cooling water, circulating water or industrial wastewater discharged from power plants or steel mills are guided by a guide blade for inducing bubbles and collected into a bubble collecting unit. A defoaming device for discharging the collected bubbles to the outside.

The present invention is a bubble removing device of industrial facility discharge water, Bubble collecting unit for collecting and storing the foam (100); Guide vane guides for guiding the bubble to the bubble collecting part 100; A foam fence (108) fixed to the front surface of the foam collecting unit (100) and blocking the diffusion of extra bubbles not guided by the guide blade (102) for guiding the foam; And a foam fence supporter 110 attached to the rear surface of the foam fence 108 to support the foam fence 108.

According to the present invention, it is possible to effectively collect, discharge and treat the bubbles generated during discharge of the discharged water of the industrial facility.

Description

Apparatus for Removing Foam of Discharge Water

The present invention relates to a defoaming device of industrial facility discharge water, and more specifically, after the bubbles generated from cooling water, circulating water and other industrial wastewater discharged from power plants or steel mills are guided to the bubble guide blades and collected into a bubble collecting unit. A defoaming device for discharging the collected bubbles to the outside.

As cooling water or circulation water used for cooling power generation facilities in power plants, fresh water is used for power plants located near rivers or reservoirs, and sea water is used for power plants located on beaches. Such cooling water or circulating water is discharged to the outside after it is used for cooling the power plant.

When a large amount of cooling or circulating water is drained, a large amount of foam is generated in the drainage outlet. In particular, when the height of the discharge end is high from the surface of the water, bubbles are further generated by the drop.

The foam itself generated when discharged after being used as cooling water or circulating water in a power plant, etc., is not aesthetically pleasing and gives an impression that it is dirty or harmful to the general public. In addition, when bubbles spread to the farms around the power plant, there is a problem that the oxygen supply to the water is cut off, which adversely affects aquatic organisms.

On the other hand, in the case of industrial wastewater discharged after the use as industrial water in steel mills or industrial sites, even if the purification process, there is a problem that a certain amount of heavy metal is contained in the foam generated during the discharge.

In order to solve this problem, a method used in the conventional defoaming was to use an antifoaming agent. Antifoaming agent is a drug used to remove harmful bubbles, and the antifoaming action has a function of breaking bubbles and suppressing bubbles. However, in the case of using an antifoaming agent, secondary water pollution occurs due to the addition of the antifoaming agent, which is not a good method in terms of pollution prevention, and there is a problem that the cost for the antifoaming agent is increased.

A representative method for preventing the spread of bubbles generated in industrial facilities is to install a foam fence (Foam Fence). However, as the conventional foam fence only prevents the spread of the foam, a separate operation of removing the foam trapped in the foam fence is required separately, and when the collected foam is accumulated, there is a problem of overflowing the foam fence.

In addition to foam fences, equipment and facilities have been proposed for removing bubbles generated during the discharge of cooling or circulating water or industrial wastewater. Representatives have been proposed, such as a facility that destroys the bubbles generated by using the watering equipment or collects the bubbles in a separate storage tank.

However, such a method or equipment has a disadvantage in that the collection efficiency is lowered even if only the function of limiting only the bubble is released or some bubble is collected. In addition, there is a disadvantage that it is difficult to treat the collected bubbles to the outside or the collected bubbles cannot be processed immediately.

On the other hand, the conventional defoamer has a problem that does not effectively respond to such external conditions change when the water level conditions of the sea or river discharged cooling water or circulating water is affected by the waves or the like.

In addition, the foam contains the carcass of the flora and fauna plankton has a problem causing eutrophication of the sea or rivers.

In order to solve the above problems, the present invention induces bubbles generated by discharged water from an industrial facility such as a power plant and flows down at a high flow rate into a foam fence, and then efficiently collects bubbles by using a bubble collector and collects bubbles. It is an object of the present invention to provide a defoaming device for effluent from industrial installations for external collection.

1 is a schematic perspective view of a bubble removing device according to a preferred embodiment of the present invention,

2 is a side view of a bubble removing device according to a preferred embodiment of the present invention,

3 is a plan view of a symmetrical part of the defoamer according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: bubble collecting part 102: guide blade for inducing bubbles

104: foam collecting plate 106: fixing cable

108: foam fence 110: foam fence support

112: ballast chain 202: guide wing buoyancy material

204: guide wing net 206: bubble outlet

208: overflow sphere 210: spare sphere

212 hinge

In order to achieve the above object, the present invention, in the defoamer of the industrial facility discharge water, the bubble collecting unit for collecting and storing the foam (100); Guide vane guides for guiding the bubble to the bubble collecting part 100; The foam collecting unit 100 is fixed to the front surface, the foam fence 108 to block the diffusion of extra bubbles not guided to the guide guide for foam guide 102; And a foam fence supporter 110 attached to the rear surface of the foam fence 108 to support the foam fence 108.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a schematic perspective view of a bubble removing apparatus according to a preferred embodiment of the present invention.

By installing the defoaming device of the present invention in a waterproof path in which cooling water discharged after use in an industrial facility such as a power plant or discharged water such as circulating water or industrial wastewater is discharged, and guides bubbles generated during discharge using a guide blade 102 for foaming. The bubble collecting unit 100 is collected.

The bubble removing device according to the present invention is attached to the foam fence 108 and the foam fence 108 supported by the foam fence support 110, and the foam collecting unit 100 and the foam collecting the foam function to collect the foam foam It comprises a guide blade 102 for guiding bubbles to guide the part (100).

In addition, the bottom of the foam fence 108 is provided with a ballast chain (Ballast Chain: 112), the front of the foam collecting unit 100 is provided with a foam collecting plate 104, the fixing cable 106 is a foam fence ( 108 and the guide vane 102 for foam induction.

On the other hand, depending on the environment in which the defoamer is used, the foam fence 108 and the guiding blades 102 for guiding the foam generally have a length of several meters (m) to several tens of meters.

With reference to Figures 2 and 3 will be described in detail the bubble removing apparatus according to the present invention.

2 is a side view of a bubble removing apparatus according to a preferred embodiment of the present invention, Figure 3 is a plan view of a bubble removing apparatus according to a preferred embodiment of the present invention. 3 illustrates only one portion of a symmetric part of the entire plan view.

The front surface of the defoamer device is provided with a guide blade 102 for guiding the bubble. Guide vane for guiding the bubble 102 serves to guide the bubble to the bubble collecting unit (100). Bubbles generated during the discharge of the cooling water are lowered to the bubble removing device by the flow rate of the discharged cooling water, etc. The guide blades 102 for inducing bubbles allow the bubbles to be effectively collected in the bubble collecting part 100. The guide vane 102 for foam guidance is attached to the foam collector 100 via a hinge 212. Therefore, it is possible to change the angle of the guide vane 102 for foam guidance to the angle required when collecting bubbles.

As the foam floats on the water and flows down to the guiding blades 102 for bubble flow, a part of the guiding blades 102 for guiding the bubbles should be submerged below the surface of the water, while the rest should be floated above the surface to effectively induce the bubbles floating on the surface of the water. Can be. Therefore, it is preferable to provide the guide vane buoyancy material 202 inside the guide vane 102 for foam guidance. On the other hand, the lower part of the guide guide blade 102 for foaming is pressured by the flow rate of the discharged water causing the foam, the upper part of the guide guide for foam guide 102 is affected by wind, guide the guide for foaming The wing 102 is preferably provided with a guide wing net 204 in the form of a net.

That is, as shown in FIG. 2, the guide vane buoyancy material 202 is provided at a portion where the guide blade 102 for foam guidance is in contact with the water surface, and the guide blade 102 for bubble guidance is a guide blade net 204. As a result, the guide vane 102 for foaming is submerged to a certain depth in the water.

The guide vane buoyancy material 202 uses a material containing air therein such as styrofoam or sponge and having a specific gravity lower than that of water. The guide vane buoyancy material 202 reduces buoyancy of water and simultaneously improves the capturing ability of the bubble when the bubble and the water are introduced at the same time, and provides buoyancy to the guide blade 102 for inducing bubbles. In addition, by forming a space through which air can be injected into the guide vane 102 for foam induction without using the guide vane buoyancy material 202, the guide vane 102 for foam induction is fixed buoyancy by injecting air into the space. You can also have

On the other hand, the end of the guide blade 102 for foam guidance is fixed to one end of the foam fence 108 by the fixing cable 106. The fixing cable 106 supports the guiding blades for guiding the foam 102, while the guiding blades for guiding the foam 102 serves to maintain a constant angle. In addition, although not shown, the foam guide guide blades 102 may be fixed using a separate cable so as not to be pushed back by the discharged cooling water or the like. That is, a separate cable is mounted at a position where each fixing cable 106 is fixed to the guide blade 102 for foam guide so that the guide blade 102 for foam guide maintains a constant angle.

The hinge 212 for allowing the guide blade 102 for the bubble guide to be combined with the bubble collector 100 may be rotatable without limitation, but within a predetermined angle range for fixing the guide blade 102 for the bubble guide. Only rotation may be limited, and in some cases, the position may be fixed.

On the other hand, although not shown in Figure 2 is not connected to the fixing cable 106 connected to the end of the guide blade 102 for foam guidance to the foam fence 108, located on the extension line of the guide blade 102 for foam guidance By fixing to a separate fixing portion (not shown) it may be to maintain the angle of the guide blade 102 for foam guidance.

The foam fence 108 blocks the bubbles when there is some bubbles that are not guided to the guide blade 102 for induction of bubbles and passes through the guide blade 102 for induction of bubbles. It serves to support the guide blades 102 for foam guidance.

A foam fence support 110 is attached to the rear of the foam fence 108 and a ballast chain 112 is provided at the lower portion of the foam fence 108 to balance the foam induction device including the foam fence 108.

Foam fence support 110 is attached to the back of the foam fence 108 as described above serves to support the foam fence (108). The buoyancy material is inserted or the air is filled in the foam fence support 110 so that the foam removing device of the present invention including the foam fence 108 can float on the water surface.

Meanwhile, as described above, the guide vane buoyancy material 202 is also provided inside the guide vane 102 for foam induction or air is injected to allow the guide vane 102 for foam induction to be injured on the water surface. The amount of buoyancy or air filled in the foam fence support 110 must be determined so that the buoyancy received by the guide wing 102 and the buoyancy received by the foam fence support 110 may be balanced. However, since the foam fence support 110 and the foam fence 108 and the guide blade 102 for guiding the foam reach several meters to several tens of meters, fine adjustment is not necessary according to the buoyancy difference.

The lower portion of the foam fence 108 is provided with a ballast chain 112 for maintaining the balance of the foam removing device according to the present invention. The ballast chain 112 functions to maintain the balance of the bubble removing device in the change of the surrounding environment, such as a water level fluctuation or a wind speed change. The buoyancy of the foam fence support 110 and the buoyancy of the guide wing buoyancy material 202 can be sufficiently maintained the balance of the bubble removing device, but if the ballast chain 112 is provided due to the weight of the ballast chain 112 It is possible to effectively cope with the change in the moment of the entire defoamer according to the environmental change.

Next, the bubble collecting unit 100 will be described in detail.

The bubble collecting unit 100 serves as a storage tank for collecting the bubbles guided by the guide blade 102 for bubble guide to discharge the bubbles to the outside. The foam collecting unit 100 is advantageous to the manufacturing and installation of the rectangular structure with the upper surface and the upper surface of the surface on which the foam collecting plate 104 is attached as shown in Figs. In the implementation, the shape of the bubble collecting part 100 is not limited thereto.

The front surface of the bubble collecting unit 100 is provided with a bubble collecting plate 104 to effectively collect only the induced bubbles. One end of the bubble collecting plate 104 is attached to the bubble collecting part 100 and the other end is in contact with the water surface. In this case, the portion where the foam collecting plate 104 is attached to the foam collecting unit 100 is slightly higher than the surface of the water, and the portion where the foam collecting plate 104 is in contact with the surface of the water is preferably locked below the surface of the water. By doing so, when bubbles and water are simultaneously introduced, only the bubbles floating on the water can be effectively collected and flow into the bubble collecting unit 100.

The foam collecting plate 104 is fixed to the foam collecting part 100 at a predetermined angle so that one end of the foam collecting plate 104 is obliquely submerged on the surface of the water. However, when the bubble collecting unit 100 is fixed, when the bubble removing device flows due to waves or the like, a problem may arise in that the bubble collecting plate 104 falls from the water surface or becomes too large with the water surface. Therefore, the bubble collecting plate 104 is a buoyant material that can float on the water, and the portion where the bubble collecting plate 104 is attached to the bubble collecting unit 100 is configured to be rotatable, so that the bubble collecting plate 104 itself is formed. It can also be used to float on the surface with buoyancy.

Sides of the bubble collecting unit 100 are provided with a bubble outlet 206, an overflow sphere 208, a preliminary sphere 210, and the like.

The bubble outlet 206 is for discharging the bubbles collected in the bubble collecting unit 100 to the outside. Foam collected in the foam collecting unit 100 is discharged to the outside by a foam suction pipe (not shown) connected to the foam outlet 206. The foam suction pipe is connected to a suction pump (not shown), and the suction pump discharges the bubbles collected in the foam collecting part 100 to the outside.

Since the collected bubbles accumulate on the bottom surface of the bubble collecting part 100, it is advantageous to install the bubble outlet 206 at the lower side of the bubble collecting part 100 in discharging the bubbles collected in the bubble collecting part 100. In addition, the foam outlet 206 may be provided on each side of each of the foam collecting unit 100, but may be provided only on one side.

The overflow sphere 208 allows the foam collecting unit 100 to discharge the foam or water to the outside when the foam or water is excessively collected. The overflow sphere 208 is preferably provided slightly higher than the height of the water surface so that external water does not flow into the bubble collecting part 100. In addition, the overflow sphere 208 is provided with one or more on each side of the bubble collecting unit 100 so as to balance the left and right. Of course, the overflow sphere 208 may also be attached to one side of the bubble collecting unit 100, similar to the bubble outlet 206.

However, when the wave is high, external water may enter the bubble collecting unit 100 through the overflow sphere 208, so when the bubble removing device of the present invention is installed in the high wave region, the overflow sphere 208 It is preferable not to have a).

The preliminary opening 210 is for injecting seawater or fresh water, or injecting an antifoaming agent. In order to easily discharge the bubbles collected in the bubble collecting unit 100 to the bubble outlet 206, it is good to extinguish the collected bubbles, injecting sea water or fresh water through the preliminary opening 210 or injecting antifoaming agents, etc. To destroy it. The preliminary opening 210 is connected to a separate defoaming material supply pipe (not shown) to inject seawater or fresh water or an antifoaming agent from the outside.

The procedure for collecting and processing bubbles is described in detail as follows.

The bubbles naturally dropped by the fast flow rate of the drainage outlet are collected by the defoamer of the present invention, and the collected bubbles are collected through the bubble suction pipe connected to the bubble outlet 206. At this time, in order to effectively collect the bubbles collected through the bubble suction pipe, it is preferable to inject water or antifoaming agent such as fresh water or seawater through the preliminary opening 210 to eliminate the bubbles.

Foam collected outside through the foam suction pipe is treated using a gravity filtration process, a drying process, or a wastewater treatment process through which a precipitate is filtered through a gravel layer, a filter medium, and a filter layer.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, there is an effect of effectively collecting bubbles generated when the discharged water of an industrial facility is discharged by using a guide blade for inducing bubbles.

In addition, the bubbles collected in the bubble collecting unit can be discharged to the outside through the bubble outlet provided in the bubble collecting unit to be able to simultaneously collect and discharge and process the bubbles, which is effective in preventing environmental pollution.

In addition, the bubble removing device of the present invention may be floating on the surface while maintaining a constant depth even when the external conditions change due to its own buoyancy, so that the bubble removing device may be free of bubbles without being greatly affected by the change in external conditions. have.

On the other hand, when used in conjunction with the bubble removing device according to the present invention it is also possible to remove a wide range of bubbles to eliminate the inconvenience of having to collect the collected bubbles again as a separate equipment after simply collecting bubbles before There are advantages to it.

Claims (13)

In the defoamer of industrial wastewater, A bubble collecting part (100) for collecting and storing the bubble; Guide vane guides for guiding the bubble to the bubble collecting part 100; The foam collecting unit 100 is fixed to the front surface, the foam fence 108 to block the diffusion of extra bubbles not guided to the guide guide for foam guide 102; And Foam fence support 110 is attached to the back of the foam fence 108 to support the foam fence 108 Defoaming device comprising a. The method of claim 1, The foam fence device, characterized in that the lower portion of the foam fence 108 is provided with a ballast chain (112) for maintaining the balance of the foam removal device. The method according to claim 1 or 2, The bubble collecting unit 100 is a bubble removing device characterized in that the bubble collecting plate 104 for collecting the bubbles guided by the bubble guide guide blade 102 to the bubble collecting unit 100 is provided . The method according to claim 1 or 2, The defoaming device further comprises a fixing cable 106 for connecting the bubble guide guide blade 102 and the foam fence 108 to fix the bubble guide guide blade 102. Defoaming device. The method of claim 3, wherein The defoaming device further comprises a fixing cable 106 for connecting the bubble guide guide blade 102 and the foam fence 108 to fix the bubble guide guide blade 102. Defoaming device. The method of claim 3, wherein Inside the bubble guide vane 102 is a bubble removing device, characterized in that the guide blade buoyancy material (202) for floating the bubble guide guide blades (102) on the water surface. The method of claim 3, wherein Side of the bubble collecting unit 100, the bubble removing device, characterized in that it comprises at least one bubble outlet 206 for discharging the bubbles collected in the bubble collecting unit 100 to the outside. The method of claim 3, wherein Side of the bubble collecting unit 100, the bubble removing device, characterized in that the preliminary opening 210 for introducing a defoamer or water to the bubble collecting unit (100). The method of claim 3, wherein An overflow sphere 208 is provided on the side of the bubble collecting part 100 to flow outside when the water and bubbles collected in the bubble collecting part 100 exceed the capacity of the bubble collecting part 100. Defoamer device characterized in that it comprises a). The method of claim 1, The bubble removing device, A bubble suction pipe which is coupled to the bubble outlet 206 of the bubble collecting part 100 and serves as a passage for discharging the bubbles collected in the bubble collecting part 100, and is connected to the bubble suction tube to suck and discharge the bubble. Defoaming device further comprises a suction pump. The method of claim 10, The foam fence device, characterized in that the lower portion of the foam fence 108 is provided with a ballast chain (112) for maintaining the balance of the foam removal device. The method of claim 10 or 11, The bubble collecting unit 100 is provided with a bubble collecting plate 104 for collecting the bubbles guided by the bubble guide guide blades 102 to the bubble collecting unit 100. . The method of claim 10 or 11, The defoaming device further comprises a fixing cable 106 for connecting the bubble guide guide blade 102 and the foam fence 108 to fix the bubble guide guide blade 102. Defoaming device.