JP2005305308A - Defoaming apparatus, defoamer vessel, defoaming method and pet bottle for defoamer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a defoaming apparatus that effects the reduction of a maintenance cost, a running cost and the like and that effectively and surely defoames bubbles, to provide a vessel for a defoamer, to provide a defoaming method and to provide a PET bottle for a defoamer. <P>SOLUTION: The defoaming apparatus has a mechanism that the inside of a receiving dish 10 is filled with a high concentration of the defoamer A because the defoamer A is discharged so that the defoamer A remains within the defoamer vessel 6 of which the opening part 7 is directed downward. The defoamer A in the receiving dish 6 is held in a high concentration because it is replaced with the defoamer A of the high concentration in the defoamer vessel 6 even if the concentration of the defoamer A in the receiving dish 10 is temporarily lowered due to the defoaming action. Also, the power for adding the defoamer A is eliminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an antifoaming device, an antifoaming agent container, an antifoaming method, and an antifoaming agent PET bottle.

  For example, in an aeration tank or the like for treating organic waste water (treated water), bubbles may be generated on the liquid surface. In order to eliminate the bubbles, an antifoaming agent diluted with a stock solution or water is used. It is added to the water to be treated.

As a defoaming apparatus for adding the defoaming agent, when the generation of bubbles is detected, a defoaming agent is added using a pump (for example, refer to Patent Document 1), or on the surface of the water to be treated. An antifoaming agent container that is provided is inclined by the buoyancy of bubbles and an antifoaming agent in the antifoaming agent container is added (for example, see Patent Document 2).
JP-A-1-231909 Japanese Patent Laid-Open No. 11-262791

  However, the antifoaming device described in Patent Document 1 has a problem that the antifoaming agent is separated from water when the pump is stopped, the separated stock solution closes the pump, and the antifoaming agent cannot be appropriately added. Furthermore, there is a problem that periodic inspection of the pump is necessary, and the maintenance cost increases, and the running cost of the pump is increased.

  Further, in the antifoaming device described in Patent Document 2, the antifoaming agent container storing the antifoaming agent is not inclined due to the buoyancy of the bubbles, and the problem that the antifoaming agent cannot be appropriately added is not possible. There is. Even if the defoamer container is inclined due to air bubbles, the stock solution is submerged in the lower part of the defoamer container, so it can be effectively added from the low-concentration defoamer floating on the upper part of the defoamer container. There is a problem that it cannot be removed.

  The present invention has been made in order to solve such problems, and it is possible to reduce maintenance costs, running costs, etc., and to defoam bubbles efficiently and reliably, and an antifoaming agent container. An object of the present invention is to provide an antifoaming method and an antifoaming agent PET bottle.

  An antifoaming device according to the present invention is an antifoaming device that brings bubbles on a liquid surface of water to be treated into contact with an antifoaming agent that defoams the bubbles, and flows out from an antifoaming agent container that contains the antifoaming agent. A receiving tray for storing the antifoaming agent, the receiving tray being installed near the surface of the water to be treated so that bubbles can flow in, and an opening provided in the antifoaming agent container through which the antifoaming agent flows. The support member is provided for supporting the antifoaming agent container so that the antifoaming agent remains in the antifoaming agent container when it is immersed downward in the liquid surface in the tray.

  The defoaming method according to the present invention is a defoaming method in which bubbles on the liquid surface of the water to be treated and an antifoaming agent that defoams the bubbles are brought into contact with each other, and the tray is placed near the liquid surface of the water to be treated. Install and store the defoamer that has flowed out of the defoamer container in the dish, so that the opening in the defoamer container through which the defoamer circulates faces downward and is immersed in the liquid surface in the dish. The antifoaming agent container is supported so that the antifoaming agent remains in the antifoaming agent container, and air bubbles flowing into the receiving tray are received and brought into contact with the antifoaming agent in the tray.

  According to such an antifoaming apparatus and antifoaming method, the opening of the antifoaming agent container is turned downward, and the antifoaming agent flows out so as to remain in the antifoaming agent container. Filled with antifoam. Further, even if the concentration of the antifoaming agent in the tray is temporarily reduced by defoaming, for example, it is replaced with a high concentration antifoaming agent in the antifoaming agent container, and the antifoaming agent in the pan is kept at a high concentration. It is. Moreover, the power for addition of an antifoamer is made unnecessary.

  Here, the sealing member is easily opened when the receiving tray has a configuration in which the antifoaming agent container faces downward and includes a protruding portion that opens the sealing portion that seals the opening.

  In addition, when the support member is a member in which the antifoaming agent container is erected and detachably mounted, the above-described operation is effectively achieved and the antifoaming agent container can be easily replaced.

  Moreover, when the suspension means for suspending the tray following the change in the liquid level of the water to be treated is provided, air bubbles can easily flow into the tray.

  Moreover, when the rainwater intrusion prevention means for preventing rainwater intrusion into the tray is provided, it is possible to prevent the defoaming agent from being reduced in concentration due to rainwater intrusion.

  In addition, when the receiving tray is configured to include the first mounting portion on which the convex portion having the opening of the antifoaming agent container can be attached, the antifoaming agent container is easily positioned and attached.

  Further, the antifoaming agent container according to the present invention is capable of containing an antifoaming agent that defoams bubbles, and includes an opening through which the antifoaming agent circulates, and a convex portion having the opening, and the convex portion. Includes a second mounting portion that can be mounted on the first mounting portion. Thereby, the mounting | wearing to a saucer is performed correctly.

  An antifoaming agent plastic bottle according to the present invention contains therein an antifoaming agent that defoams bubbles, and has an opening and a lid through which the antifoaming agent circulates. It is characterized by being mounted and used. Thereby, a high concentration antifoaming agent flows out appropriately from an opening.

  Here, as a configuration that effectively exhibits the above-described operation, specifically, the opening is sealed by a sealable portion that can be opened, and is mounted downward on a device that includes a protrusion that opens the seal. Then, the structure by which a sealing part is opened and an antifoamer flows out is mentioned.

  An antifoaming agent plastic bottle according to the present invention contains therein an antifoaming agent that defoams bubbles, and includes an opening and a lid through which the antifoaming agent circulates. It is characterized by being mounted on a member for use.

  As described above, according to the antifoaming device, the antifoaming agent container, the antifoaming method, and the antifoaming agent PET bottle according to the present invention, power for adding the antifoaming agent is unnecessary, and maintenance costs, running costs, etc. are reduced. In addition, it is possible to provide an antifoaming device, an antifoaming agent container, an antifoaming method, and an antifoaming agent PET bottle that are filled with a high-concentration antifoaming agent in the tray and efficiently and reliably defoaming bubbles. .

  Hereinafter, preferred embodiments of a defoaming apparatus according to the present invention will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a schematic configuration diagram of an aeration tank provided with a defoaming device according to a first embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of the defoaming device in FIG.

  As shown in FIG. 1, the defoaming apparatus 1 of 1st Embodiment is installed in the aeration tank 2 which biologically processes organic wastewater (water to be treated) W, such as a human waste treatment plant and a sewage treatment plant, The bubbles B floating on the liquid surface W1 of the organic waste water W are defoamed. In such an aeration tank 2, foaming is often caused by air, and particularly when the concentration of organic components is high or when the amount of washing wastewater is large, foaming is intense.

  The aeration tank 2 is usually a deep layer type, and includes a partition wall 3 in the substantially center, and an aeration device 5 connected to the blower 4 as an aeration means between the partition wall 3 and the side wall surface of the aeration tank 2. Then, an ascending water flow is generated by aeration of the air diffuser 5 to form a circulating water flow W2 that circulates around the partition wall 3.

  Hereinafter, the defoaming apparatus 1 will be described in detail. As shown in FIG. 2, the antifoaming apparatus 1 includes an antifoaming agent PET bottle (antifoaming agent container) 6 that contains an antifoaming agent A that defoams the bubbles B, and the antifoaming agent PET bottle 6 facing downward. And a suspending means 13 for suspending the basin 10 from above in order to dispose the basin 10 near the liquid level W1 of the organic waste water. It is installed above the air diffuser 5. The antifoaming agent A used here is composed of, for example, silicon, ester, alcohol, etc., and has the ability to defoam the bubbles B by contacting the bubbles B, and the stock solution or the stock solution is diluted with water. is there.

  The antifoaming agent plastic bottle 6 is configured to have a convex portion 8 having a small tip, and has an opening 7 through which the antifoaming agent A circulates at the tip of the convex portion 8. It is sealed with an openable sealing sheet (sealing part). In the illustrated use state, the sealing sheet is opened.

  The saucer 10 is configured in a bowl shape, and includes a predetermined antifoaming agent storage region inside, and a quadrangular pyramid-shaped protrusion 11 is provided on the bottom 10a. The protrusion 11 has a shape that opens the sealing sheet of the opening 7 and is inserted into the opening 7 to support the antifoaming plastic bottle 6 from below. The sealing sheet can be easily opened simply by pressing the antifoaming plastic bottle 6 from above.

  A cylindrical support cylinder 14 is installed on the upper side of the tray 10 coaxially with the protrusion 11 so that the antifoaming agent plastic bottle 6 can be held inside thereof. At the upper end of the support cylinder 14, a lid 17 that is shaped like the bottom 6 a of the antifoaming agent plastic bottle 6 and can be opened and closed is provided. Further, the upper end and the lower end of the support cylinder 14 each have an annular first flange portion 15 and a second flange portion 16 projecting in the horizontal direction, and the outer diameter thereof is substantially the same as that of the tray 10.

  A waterproof umbrella 19 that projects obliquely downward from the outer periphery of the first collar 15 is connected to the first collar 15. The lid 17, the first brim part 15, the second brim part 16, and the waterproof umbrella 19 constitute rainwater intrusion prevention means for preventing rainwater from entering the tray 10. This rainwater intrusion prevention means prevents the concentration of the antifoam A in the tray 10 from being lowered.

  The suspension means 13 includes suspension wires 20 a and 20 b and a suspension hook 21. The suspension wire 20 a connects the tray 10 and the first flange 15, and the suspension wire 20 b includes the first flange 15 and the suspension hook 21. The suspension hook 21 is hung at a predetermined position. That is, the tray 10 follows the fluctuation of the liquid level W1 of the organic waste water by the suspending means 13 so that the bubbles easily flow into the tray 10.

  Further, the protrusion 11, the support body 14, and the lid 17 constitute a support member for detachably mounting the antifoaming agent plastic bottle 6. The support member facilitates replacement of the antifoaming plastic bottle 6.

  Next, a defoaming method using the defoaming apparatus 1 configured as described above will be described. First, the antifoaming agent plastic bottle 6 is attached to the support member. Specifically, the opening 7 of the defoamer PET bottle 6 is inserted downward into the support barrel 14 from the upper side, abuts against the protrusion 11 of the tray 10, and the lid 17 is closed. At the time of mounting, the sealing sheet of the opening 7 is opened by the protrusion 11, and the antifoam A in the antifoaming PET bottle 6 passes through the gap between the opening 7 and the protrusion 11 and is a receiving tray. The air flows into the defoamer PET bottle 6. Due to the outflow of the antifoam A, the antifoam A is filled in the tray 10, the opening 7 is immersed in the liquid level A1 of the antifoam, and the pressure inside and outside the antifoam plastic bottle 6 is balanced. In the state, the outflow of the antifoam A from the antifoam PET bottle 6 stops. That is, in this balanced state, the defoamer A remains in the defoamer PET bottle 6, and the total of the pressure of the air in the defoamer PET bottle 6 and the pressure of the defoamer A is balanced with the atmospheric pressure. Thus, the liquid level A1 in the tray 10 is formed.

  Here, when the bubble B is generated and flows into the tray 10, the bubble B comes into contact with the liquid level A1 of the defoaming agent and is instantly defoamed. In addition, during the defoaming, the antifoaming agent A is scattered outside the tray 10 and the bubbles B outside the tray 10 are also defoamed. Moreover, even if the water | moisture content which forms the bubble B flows in into the saucer 10, a part will overflow with the antifoamer A outside the saucer 10, and the bubble B outside the saucer 10 will also be defoamed. Further, even if the concentration of the antifoam A in the tray 10 is temporarily reduced due to defoaming, for example, the antifoam A in the tray 10 is replaced with the high concentration antifoam A in the antifoam PET bottle 6. Is kept at a high concentration. Moreover, even if the liquid level A1 of the antifoaming agent in the saucer 10 is lowered, the high-concentration antifoaming agent A flows out from the antifoaming agent plastic bottle 6 and is in a balanced state as described above. An inner liquid level A1 is formed.

  The antifoaming apparatus 1 is continuously used, the antifoaming agent A in the antifoaming agent PET bottle 6 is gone, or the antifoaming agent PET bottle 6 is replaced with moisture and the antifoaming agent A has a low concentration. In this state, the defoamer PET bottle 6 is replaced.

  Thus, in the antifoaming device, the antifoaming agent container, the antifoaming method, and the antifoaming agent PET bottle of the first embodiment, power for the addition of the antifoaming agent A is not required, and maintenance, running costs, etc. are reduced. An antifoaming device, an antifoaming agent container, an antifoaming method, and an antifoaming agent PET bottle that are filled with a high concentration of antifoaming agent A and defoaming the bubbles efficiently and reliably are provided. be able to. The defoamer PET bottle 6 is optimal for use in the defoaming apparatus 1.

  In addition, although the projection part 11 of 1st Embodiment is made into the quadrangular pyramid, a triangular pyramid and other polygonal guesses may be sufficient, and the point is that the sealing part can be opened and the antifoaming agent plastic bottle 6 can be opened from the lower side. What is necessary is just to form the path | route through which the antifoamer A can distribute | circulate while it is set as the structure supported and it connects the inside and outside of the antifoamer PET bottle 6. FIG.

  FIG. 3 is a schematic configuration diagram of the defoaming apparatus according to the second embodiment of the present invention. The point that the defoaming device 31 of this second embodiment is different from the defoaming device 1 of the first embodiment is that the defoamer PET bottle 6 is screwed into the protrusion 41 that is erected on the bottom 10a of the tray 40, This is the point that the support cylinder 14 and the second flange 16 shown in FIG. 2 are eliminated.

  Specifically, as shown in FIG. 3, the protrusion 41 includes a cylindrical portion 41a and a conical portion 41b provided on the upper portion of the cylindrical portion 41a. The cylindrical portion 41a has an outer diameter that can be inserted into the opening 7 of the defoamer plastic bottle 6, and a male screw is provided on the side surface thereof. Similarly, on the inner surface of the convex portion 8 having the opening 7, a female screw that is screwed into the male screw of the protruding portion 41 is provided. Thereby, the saucer 40 provided with the protrusion 41 and the antifoaming plastic bottle 6 provided with the convex part 8 are screwed together. In addition, a path 42 is formed inside the protrusion 41 so as to allow the inside of the antifoaming agent plastic bottle 6 and the antifoaming agent storage region of the tray 40 to communicate with each other. Even if comprised in this way, the effect similar to the defoaming apparatus 1 of 1st Embodiment can be acquired, and also it becomes possible to reduce the number of parts of a support member.

  In addition, although the projection part 41 of 2nd Embodiment is set as the structure screwed in the inner surface of the convex part 8 of the defoamer PET bottle 6, it is good also as a structure screwed in the outer surface of a convex part. It is good also as a structure fitted to an inner surface or an outer surface of a convex part, and the point is that it can open the sealing part of the opening part 7, and it is set as the structure which supports the antifoamer plastic bottle 6 from the bottom, and an antifoamer plastic bottle It is only necessary to form a path through which the antifoaming agent A can be circulated while communicating between the inside and the outside.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the antifoaming agent plastic bottle 6 is erected and mounted. However, the antifoaming agent plastic bottle 6 may be inclined, and in short, the defoaming agent plastic bottle is important. It is only necessary that the six opening portions 7 can be mounted downward, and any configuration can be used as long as the antifoaming agent A having a high density and a high concentration can flow out.

  Moreover, in the said embodiment, although the container which accommodates the antifoamer A is made into the antifoamer plastic bottle 6, the container of another shape and the container of another material may be sufficient.

  Moreover, in the said embodiment, although the projection parts 11 and 41 serve as the supporting member which supports the antifoamer plastic bottle 6 from the lower side, it restrains the movement of the antifoamer plastic bottle 6 below. It is good also as a structure provided with a supporting member as another member.

  In addition, the shape of the trays 10 and 40 may be, for example, a bowl shape, or the like, as long as the defoaming agent A is stored and the defoaming agent A and the bubbles B can be in contact with each other.

  Moreover, in the said embodiment, although the defoaming apparatus is applied to the bubble generated from organic wastewater W, such as a human waste treatment plant and a sewage treatment plant, for example, to the bubble generated from other factory wastewater, domestic wastewater, etc. It may be applied.

  Further, the antifoaming agent plastic bottle 6 may be configured to include a lid at the opening 7 so that the antifoaming agent plastic bottle 6 is provided after the lid is opened.

It is a schematic block diagram of the aeration tank provided with the defoaming apparatus which concerns on 1st Embodiment of this invention. It is a schematic block diagram of the defoaming apparatus in FIG. It is a schematic block diagram of the defoaming apparatus which concerns on 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,31 ... Antifoaming device, 6 ... Antifoaming agent plastic bottle (antifoaming agent container), 7 ... Opening part, 8 ... Convex part, 10,40 ... Saucer, 11, 41 ... Protrusion part (support member), 13 ... Suspension means, 14 ... Support trunk (support member), 15 ... First brim part (rainwater infiltration prevention means), 16 ... Second collar part (rainwater intrusion prevention means), 17 ... Lid (support member; rainwater intrusion prevention) Means), 19 ... waterproof umbrella (rainwater intrusion prevention means), 20a, 20b ... hanging wire (suspending means), 21 ... hanging hook (suspending means), A ... defoaming agent, A1 ... liquid level in the saucer, B: Air bubbles, W: Organic waste water (treated water), W1: Liquid level of organic waste water (liquid level of treated water).

Claims (11)

A defoaming device for contacting bubbles on the liquid surface of the water to be treated and an antifoaming agent that defoams the bubbles,
Comprising a saucer for storing the antifoaming agent that has flowed out of the antifoaming agent container containing the antifoaming agent,
The saucer is installed near the liquid level of the water to be treated, and the bubbles can flow in,
When the opening through which the antifoaming agent circulates provided in the antifoaming agent container is immersed downward in the liquid surface in the tray,
A defoaming apparatus comprising a support member for supporting the defoamer container so that the defoamer remains in the defoamer container.   2. The defoaming apparatus according to claim 1, wherein the tray includes a protrusion that opens the sealing portion that seals the opening with the defoamer container facing downward.   The defoaming apparatus according to claim 1, wherein the support member is configured to detachably mount the defoamer container upright.   The defoaming apparatus according to any one of claims 1 to 3, further comprising a suspension unit that suspends the tray according to a change in a liquid level of the water to be treated.   The defoaming apparatus according to any one of claims 1 to 4, further comprising rainwater intrusion prevention means for preventing rainwater from entering the tray.   The antifoam according to any one of claims 1 to 5, wherein the tray includes a first mounting portion on which a convex portion having the opening of the defoamer container can be mounted. apparatus. It can accommodate an antifoaming agent that defoams bubbles,
An opening through which the antifoaming agent flows;
A convex portion having the opening,
The convex part is provided with the 2nd mounting part which can be mounted | worn with the 1st mounting part of Claim 6, The antifoaming container characterized by the above-mentioned. A defoaming method in which bubbles on the liquid surface of the water to be treated are brought into contact with an antifoaming agent that defoams the bubbles,
While installing a tray near the liquid level of the water to be treated, storing the defoamer that has flowed out of the defoamer container in the tray,
The antifoaming agent is left in the antifoaming agent container so that the antifoaming agent remains in the antifoaming agent container by immersing the antifoaming agent container in a downward direction with an opening through which the antifoaming agent flows. A defoaming method characterized by supporting an agent container and bringing the bubbles flowing into the tray into contact with an antifoaming agent in the tray. Inside it contains an antifoaming agent that defoams bubbles,
An opening through which the antifoaming agent flows and a lid;
An antifoaming plastic bottle that is mounted on a support and used for use with the opening facing downward. The opening is sealed by an openable seal,
10. The antifoaming agent PET bottle according to claim 9, wherein when the device is provided with a protrusion for opening the sealing portion, the sealing portion is opened and the antifoaming agent flows out. . Inside it contains an antifoaming agent that defoams bubbles,
An opening through which the antifoaming agent flows and a lid;
An antifoaming agent plastic bottle that is mounted on the support member according to claim 1 and used for use with the opening facing downward.

Images