JP6951119B2 - Neutralizer - Google Patents

Description

The present invention relates to a neutralizer.

In general, a latent heat recovery type heat exchanger such as a latent heat recovery type hot water supply device neutralizes an acidic liquid (drain water) generated by combustion of a fuel gas containing _{nitrogen oxides (NO x} ) or sulfur oxides (SO _x). It is equipped with a neutralizer for processing.

The neutralizing treatment device usually includes an introduction port of an untreated liquid (for example, an acidic liquid), a treatment tank containing a neutralizing agent for neutralizing the untreated liquid flowing in from the introduction port, and this treatment. It is composed of a container provided with a discharge port for discharging the treated liquid flowing out of the tank to the outside. In such a neutralizing treatment device, it is required to improve the consumption efficiency of the neutralizing agent by using up the neutralizing agent contained in the treatment tank without waste, and to reduce the size of the entire treatment device. ..

For example, Patent Document 1 describes a treatment tank (containment tank) filled with a neutralizing agent, in which an untreated liquid flows in from the upper part, and a treated liquid neutralized by the neutralizing agent flows out from the lower part. The entire neutralization treatment device can be miniaturized by combining it with a treated tank in which the treated liquid flows in from the lower part and flows out from the upper part, and making the volume of the treated tank equal to or larger than the volume of the treated tank. Proposed.

Japanese Unexamined Patent Publication No. 2005-06635

However, even in the neutralization treatment device described in Patent Document 1, further miniaturization is required. Here, the neutralization treatment device is usually used in the treatment tank from the viewpoint of suppressing the outflow of the neutralizing agent from the treatment tank and securing a predetermined surface area in order to obtain a required neutralization rate. It is required that a neutralizing agent having a relatively large particle size of about 10 to 25 mm is accommodated. Therefore, in a general neutralizing treatment device, the bulk density of the neutralizing agent is uniquely determined, and it has been considered difficult to reduce the size of the neutralizing treatment device.

On the other hand, the present inventors combine a granular neutralizing agent belonging to a large class and a granular neutralizing agent belonging to a small class, and bond each granular neutralizing agent with a binder to obtain an immobilized neutralizing agent. Because the bulk density of the entire neutralizer can be increased and the void ratio of the entire granular neutralizer can be reduced, the neutralization efficiency of the granular neutralizer can be improved and the size of the neutralizer can be reduced. Furthermore, it has been found that the outflow of granular neutralizers belonging to a small class to the outside can be suppressed and the occurrence of clogging can be suppressed.

Then, the present inventors, as a container for accommodating the immobilization neutralizer (neutralizer block), from the viewpoint of simplifying the work of accommodating the neutralizer and simplifying the structure of the neutralizer, the belt wrap. We focused on the neutralization treatment device (container) using the method.

However, the neutralizer using the belt wrap method usually has only one treatment tank in which the granular neutralizer and the untreated liquid (for example, an acidic liquid) come into contact with each other, and is being immobilized in this neutralizer. It has been found that when the Japanese agent is contained, when the untreated liquid flows locally, only a part of the granular neutralizing agents come into contact with each other, and a granular neutralizing agent that does not contribute to the neutralization reaction is generated. When a non-immobilized neutralizing agent composed of a conventional granular neutralizing agent is used, even if the untreated liquid flows locally, the granular neutralizing agent in contact with the untreated liquid flows out as it is consumed. Since the surrounding granular neutralizer collapses to compensate for the consumed granular neutralizer, the untreated liquid tends to come into contact with the entire granular neutralizer. On the other hand, in the immobilized neutralizer, since the granular neutralizer is bound via a binder, the consumed granular neutralizer is less likely to flow out, and the surrounding granular neutralizer is less likely to collapse. Therefore, such a problem can be said to be a problem peculiar to the immobilization neutralizer.

Therefore, the present invention uses an immobilized neutralizing agent capable of suppressing clogging of the neutralizer due to the granular neutralizing agent, and brings the untreated liquid into overall contact with the immobilized neutralizing agent. An object of the present invention is to provide a neutralization treatment device capable of further improving the neutralization efficiency of a granular neutralizer.

As a result of intensive research to solve the above problems, the present inventors have integrated a granular neutralizing agent into the neutralizing chamber in which the inside of the treatment tank is partitioned by two partition walls via a binder. When the immobilized neutralizing agent is contained and the lower end of one partition is formed at a position lower than the upper end of the other partition, the untreated liquid flows from the lower surface side to the upper surface side of the treatment tank. The present invention has been completed by finding that the neutralization efficiency of the granular neutralizing agent can be further improved because the untreated liquid comes into contact with the immobilized neutralizing agent as a whole and easily reacts.

That is, the neutralization treatment device of the present invention has an introduction port for the untreated liquid, a treatment tank for neutralizing the untreated liquid to obtain a treated liquid, and an discharge port for the treated liquid. The treatment tank crosses the inside of the treatment tank from at least one first partition wall extending vertically downward so as to cross the inside of the treatment tank from the upper surface of the treatment tank and from the lower surface of the treatment tank. As described above, the lower end of the first partition is formed at a position lower than the upper end of the second partition, which is partitioned by at least one second partition extending upward in the vertical direction. A neutralization chamber formed so that the untreated liquid can flow from the lower surface side to the upper surface side of the treatment tank, and immobilization formed by at least accommodating the untreated liquid in the neutralization chamber and integrating the granular neutralizing agent via a binder. and neutralizing agent, see contains a non-immobilized neutralizer and, consisting of particulate neutralizing agent which is not immobilized, in the neutralization chamber, non-immobilized neutralizing agent, is housed on the fixing neutralizer The immobilized neutralizing agent and the non-immobilized neutralizing agent are housed in a space surrounded by the lower surface of the neutralizing chamber and a horizontal plane equal to or lower than the height position of the upper end of the second partition wall. ..

The treatment tank is partitioned by a first partition wall extending vertically downward from the upper surface of the treatment tank so as to cross the inside of the treatment tank and a wall surface of the treatment tank. It is preferable to further include an introduction chamber formed so that the untreated liquid can flow from the upper surface side to the lower surface side, and the introduction is carried out so that the untreated liquid that has passed through the introduction chamber passes through the neutralization chamber. It is preferable that the chamber and the neutralization chamber share the first partition wall. As a result, a flow path communicating the introduction port and the neutralization chamber can be formed in the introduction chamber, so that the neutralization treatment does not require a means (for example, a fine tube) for introducing the untreated liquid into the neutralization chamber from the outside. The configuration of the vessel can be simplified.

The treatment tank is partitioned by a second partition wall extending vertically upward from the lower surface of the treatment tank so as to cross the inside of the treatment tank and a wall surface of the treatment tank. It is preferable to further include a pre-discharge chamber formed so that the untreated liquid can flow from the upper surface side to the lower surface side, so that the untreated liquid that has passed through the neutralization chamber passes through the pre-discharge chamber. It is preferable that the neutralization chamber and the discharge pre-chamber share the second partition wall.

The ratio of the volume of the neutralization chamber to the total volume of the treatment tank is preferably 50% by volume or more (preferably 70% by volume or more and 80% by volume or less). When the volume ratio of the neutralization chamber is 50% by volume or more, a sufficiently large amount of the immobilized neutralizing agent can be secured in the neutralizing chamber, so that the neutralization efficiency of the immobilized neutralizing agent is further improved. The sum processing device can be further miniaturized.

The immobilized neutralizing agent is contained in a space surrounded by a lower surface of the neutralizing chamber and a horizontal plane equal to or lower than the height position of the upper end of the second partition wall in the neutralizing chamber. preferable. As a result, the untreated liquid can pass between the upper end of the second partition wall and the upper surface of the treatment tank after coming into contact with the entire immobilized neutralizing agent, so that the neutralization efficiency can be further improved.

It is preferable that the treatment tank further contains a non-immobilization neutralizer composed of a granular neutralizer, and the granular neutralizer is housed on the immobilized neutralizer. Due to the neutralization reaction with the untreated liquid, the granular neutralizer in the immobilized neutralizing agent is consumed, and a gap is formed in the immobilized neutralizing agent. When the non-immobilized neutralizing agent is contained on the immobilized neutralizing agent, the formed gap is collapsed so as to be filled with the granular neutralizing agent of the non-immobilized neutralizing agent. The non-immobilized neutralizing agent can be efficiently consumed by reacting with the neutralizing agent. As a result, the required amount of the neutralizing agent (granular neutralizing agent) to be filled (accommodated) in the neutralizing treatment device can be reduced, so that the neutralizing treatment device can be further miniaturized.

The binder preferably contains an antibacterial agent and / or an antifungal agent. When the binder contains an antibacterial agent and an antifungal agent, it is possible to suppress the formation of a biofilm and / or a gel-like viscous substance in the neutralizing treatment device, and the clogging resistance is further improved.

The ratio of the antibacterial agent and / or the fungicide to the entire binder is preferably 0.1% by mass or more and 30% by mass or less. When the ratio of the antibacterial agent / antifungal agent is within the above range, the antibacterial / antifungal effect can be effectively maintained during the period of use of the neutralizing treatment device.

The granular neutralizer is preferably two or more types of granular neutralizers classified into different classes. When granular neutralizers having different particle sizes are bound by a binder, separation due to the difference in particle size is suppressed, and the granular neutralizers can be uniformly dispersed. Further, when two or more kinds of granular neutralizing agents classified into different classes are used, the granular neutralizing agent belonging to the small class can be easily arranged between the granular neutralizing agents belonging to the large class. Therefore, the bulk density and the total surface area of the entire granular neutralizer in the immobilized neutralizer can be increased. As a result, the neutralization treatment speed of the untreated liquid and the neutralization efficiency of the entire granular neutralizer can be improved, and further miniaturization can be realized. The term "class" as used herein means, for example, an on-mesh class (classification class) when classified by a sieve.

The present invention can provide a neutralization treatment device capable of improving the clogging resistance and neutralization efficiency of the granular neutralizer.

FIG. 1 is a front perspective view of a cross section showing an example of the neutralizing treatment device of the present invention. FIG. 2 is a schematic cross-sectional view of the immobilization neutralizing agent in the dotted line region P in FIG. FIG. 3 is a front perspective view of a cross section showing another example of the neutralizing treatment device of the present invention. FIG. 4 is a cross-sectional front perspective view showing still another example of the neutralizing treatment device of the present invention.

Hereinafter, embodiments for carrying out the present invention (hereinafter, simply referred to as “the present embodiment”) will be described with reference to the drawings. The present embodiment is an example for explaining the present invention, and the present invention is not limited to the embodiment thereof. That is, the present invention can be modified in various ways without departing from the gist thereof.

[Neutralizer]
FIG. 1 is a front perspective view of a cross section showing an example of the neutralizing treatment device of the present embodiment. The neutralizing treatment device 1 shown in FIG. 1 has a treatment tank 2 that neutralizes an untreated liquid (for example, an acidic liquid) to obtain a treated liquid, and extends vertically from the upper surface of the treatment tank 2 in the vertical direction. The tubular untreated liquid inlet 3 to be discharged, the tubular treated liquid discharge port 4 extending vertically downward from the lower surface of the treatment tank 2, and the treatment tank 2 attached to the upper surface side of the treatment tank 2. If the detection sensor 5 that detects the water level of the untreated liquid introduced into the treatment tank 2 and the water level of the untreated liquid that extends downward in the vertical direction from the lower surface of the treatment tank 2 and the water level of the untreated liquid in the treatment tank 2 is abnormal, it is not yet A tubular emergency discharge port 6 for draining (discharging) the treatment liquid to the outside is included, and in the treatment tank 2, an immobilization neutralizer 7 in which a granular neutralizer is integrated via a binder and a granular neutralizer 7 are contained. A non-immobilized neutralizing agent 8 made of a neutralizing agent is contained.

[Processing tank]
The treatment tank 2 shown in FIG. 1 crosses the inside of the treatment tank 2 from the lower surface of the treatment tank 2 and the first partition wall 11 extending vertically downward so as to cross the treatment tank 2 from the upper surface of the treatment tank 2. As described above, the second partition wall 12 extending upward in the vertical direction is provided, and the lower end of the first partition wall 11 is located at a predetermined distance from the lower surface of the treatment tank 2, so that the first partition wall 12 is provided. The lower end of the partition wall 11 and the lower surface of the treatment tank 2 are opened, and the upper end of the second partition wall 12 is located at a predetermined distance from the upper surface of the treatment tank 2. There is an opening between the upper end of 12 and the upper surface of the processing tank 2.

The treatment tank 2 is partitioned by an introduction chamber 15 partitioned by a wall surface of the treatment tank 2 (side wall surface on the introduction port 3 side) and a first partition wall 11; a first partition wall 11 and a second partition wall 12. Neutralization chamber 16; The introduction chamber 15 is composed of three compartments (unit tanks) of the discharge front chamber 17 partitioned by the second partition wall 12 and the wall surface of the treatment tank 2 (side wall surface on the discharge port 4 side). And the neutralization chamber 16 share the first partition wall 11, and the neutralization chamber 16 and the discharge pre-chamber 17 share the second partition wall 12.

In the treatment tank 2, the introduction chamber 15 is formed so as to communicate the introduction port 3 and the neutralization chamber 16, and the discharge front chamber 17 is formed so as to communicate the discharge port 4 and the neutralization chamber 16. The introduction chamber 15 and the neutralization chamber 16 communicate with each other between the lower surface of the treatment tank 2 and the lower end of the first partition wall 11, and the neutralization chamber 16 and the discharge front chamber 17 communicate with the upper surface of the treatment tank 2 and the second partition wall 11. It communicates with the upper end of the partition wall 12.

(Immobilization neutralizer)
The immobilized neutralizing agent 7 shown in FIG. 1 is housed in the introduction chamber 15 and the neutralizing chamber 16, and in the neutralizing chamber 16, the lower surface of the neutralizing chamber 16 and the height position of the upper end of the second partition wall 12 are higher than the height position. It is housed in a space surrounded by a low horizontal plane.

FIG. 2 shows a schematic cross-sectional view of the immobilization neutralizing agent 7 in the dotted line region P in FIG. As shown in FIG. 2, the immobilized neutralizing agent 7 includes a granular neutralizing agent 21 composed of two types, a granular neutralizing agent 21A belonging to a large class and a granular neutralizing agent 21B belonging to a small class, and an antibacterial agent. It has a resin (binder) 22 containing an antifungal agent and / or a block-like form in which the granular neutralizer 21 is in point contact and bonded via the resin (binder) 22.

The immobilized neutralizing agent 7 has the granular neutralizing agents 21A and 21B bonded to each other by the resin (binder) 22, so that the granular neutralizing agent 21 (particularly in the granules belonging to the smaller class) is contained in the neutralizing treatment device 1. Since the occurrence of clogging due to the outflow of Japanese agent 21B) can be suppressed, the reliability of the product is improved.

Further, when the granular neutralizing agent 21A belonging to the large class and the granular neutralizing agent 21B belonging to the small class are bonded with the resin (binder) 22, the bulk density and the total surface area of the entire granular neutralizing agent 21 can be increased. Further, since the granular neutralizer 21 and the resin (binder) 22 are in point contact with each other and bonded to each other, the coverage of the surface of the granular neutralizer 21 by the resin (binder) 22 can be reduced, and the granular neutralizer 21 can be reduced. A sufficient gap can be secured between them to facilitate the flow of the untreated liquid. Therefore, the frequency of contact of the untreated liquid moving in the immobilized neutralizing agent 7 with the granular neutralizing agent 21 is improved, so that the neutralization treatment can be efficiently performed in a short time. Further, if sufficient voids are secured between the granular neutralizing agents 21, the toughness of the immobilized neutralizing agent 7 can be improved.

Further, since the binder 22 contains an antibacterial agent and / or an antifungal agent, it is possible to suppress the formation of a biofilm and / or a gel-like viscous substance in the neutralizing treatment device 1, and the clogging resistance is further improved. do.

(Non-immobilization neutralizer)
The non-immobilized neutralizing agent 8 is housed in the neutralizing chamber 16, and is housed on the immobilized neutralizing agent 7 in the neutralizing chamber 16.

[Detection sensor]
The detection sensor 5 is attached to the introduction port 3 side of the upper surface of the processing tank 2, and one end (lower end) is connected to the electrode rod 31 in the processing tank 2 and the other end (upper end) of the electrode rod 31. It is provided with a detector 32 for detecting the continuity state of the above. When the untreated liquid reaches a height exceeding a predetermined water level (overflow) in the treatment tank 2, one end of the electrode rod 31 is immersed in the untreated liquid to conduct conduction, so that the conduction state of the electrode rod 31 is detected. It is detected by the vessel 32. As a result, the overflow of the untreated liquid can be detected.

[Emergency discharge pipe]
The emergency discharge pipe 6 is connected to the lower surface of the introduction chamber 15 via a valve mechanism (not shown). When the detection sensor 5 detects that the water level of the untreated liquid in the treatment tank 2 is abnormal due to, for example, clogging in the neutralization treatment device 1 or ingress of rainwater, the detection sensor 5 detects it. An abnormal signal is output from the sensor 5 to a valve mechanism (not shown), and the valve mechanism opens a flow path to the emergency discharge port 6 so that the untreated liquid in the treatment tank 2 can be drained.

Next, the mechanism of action of introducing the untreated liquid into the neutralizing treatment device 1 shown in FIG. 1 and discharging the neutralized treated liquid to the outside will be described.

The untreated liquid is introduced into the introduction chamber 15 by the introduction port 3. Since the introduction chamber 15 is partitioned by the wall surface of the treatment tank 2 and the first partition wall 11, the untreated liquid flows in the introduction chamber 15 from the upper surface side to the lower surface side of the treatment tank 2. Since the immobilization neutralizer 7 is contained in the introduction chamber 15, the untreated liquid reacts with the granular neutralizer in the immobilization neutralizer 7 during the distribution process. The untreated liquid that has passed through the introduction chamber 15 passes between the lower end of the first partition wall 11 and the lower surface of the treatment tank 2, and flows through the neutralization chamber 16 from the lower surface side to the upper surface side of the treatment tank 2. Since the immobilization neutralizer 7 is contained in the neutralization chamber 16, the untreated liquid first reacts with the granular neutralizer in the immobilization neutralizer 7 during the distribution process, and reaches the upper end of the second partition wall 12. When it rises, it further reacts with the non-immobilization neutralizer 8 housed on the immobilization neutralizer 7. The untreated liquid that has passed through the neutralization chamber 16 passes between the upper end of the second partition wall 12 and the upper surface of the treatment tank 2 and flows into the pre-discharge chamber 17. In the discharge front chamber 17, the untreated liquid flows from the upper surface side to the lower surface side of the treatment tank 2 and passes through the discharge port 4 because it is partitioned by the wall surface of the treatment tank 2 and the second partition wall 12. It is discharged to the outside as a processed liquid.

In the neutralization chamber 16, the untreated liquid stays in the neutralization chamber 16 from the lower surface side, and the water level of the retained untreated liquid rises from the lower surface side to the upper surface side of the treatment tank 2. Since the untreated liquid flows to the upper end of the second partition wall 12, the untreated liquid is totally in contact with the immobilization neutralizing agent 7 to undergo a neutralization reaction. As a result, the neutralization efficiency of the granular neutralizer 21 in the immobilized neutralizer 7 is improved. Further, as the granular neutralizer 21 in the immobilized neutralizing agent 7 is consumed, the gap formed in the immobilized neutralizing agent 7 is filled with the granular neutralizing agent of the non-immobilized neutralizing agent 8. Collapse. As a result, the untreated liquid further comes into contact with the granular neutralizing agent of the non-immobilization neutralizing agent 8 and reacts (neutralization reaction), so that the neutralization efficiency of the granular neutralizing agent in the non-immobilizing neutralizing agent 8 is achieved. Also improves.

Further, by forming the introduction chamber 15 in the treatment tank 2, it is not necessary to provide a means for introducing the untreated liquid into the neutralization chamber 16 from the outside of the treatment tank 2, and the first partition wall 11 is inside the treatment tank 2. Since the untreated liquid can be introduced into the neutralization chamber 16 with a simple configuration of providing the neutralization treatment device 1, the configuration of the neutralization treatment device 1 can be simplified.

From the above, the neutralization efficiency of the granular neutralizer can be improved, and the configuration of the neutralization treatment device 1 can be further simplified, so that the neutralization treatment device 1 can be further miniaturized.

The neutralization treatment device of the present embodiment has an introduction port for the untreated liquid, a treatment tank for neutralizing the untreated liquid to obtain a treated liquid, and an discharge port for the treated liquid. Then, the treatment tank crosses the inside of the treatment tank from the lower surface of the treatment tank and at least one first partition wall extending vertically downward so as to cross the inside of the treatment tank from the upper surface of the treatment tank. By being partitioned by at least one second partition wall extending vertically upward so as to be formed, the lower end of the first partition wall is formed at a position lower than the upper end of the second partition wall. A neutralization chamber formed so that the untreated liquid can flow from the lower surface side to the upper surface side of the treatment tank, and at least housed in the neutralization chamber, and a granular neutralizing agent integrated with each other via a binder. It may contain a chemical neutralizing agent.

The term "partition wall" as used herein means, for example, dividing the inside of a treatment tank into two tanks and blocking the flow of untreated liquid in the horizontal direction from one of the divided tanks to the other tank. A wall (blocking wall) formed in this way. Here, since the partition wall extends in the vertical direction so as to cross the inside of the treatment tank, the horizontal flow from one tank to the other tank can be blocked. The lower end of the first partition wall is located at a predetermined distance from the lower surface of the treatment tank in the vertical direction, and the upper end of the second partition wall is located at a predetermined distance from the upper surface of the treatment tank in the vertical direction. There is.

In the neutralization treatment device of the present embodiment, an extension wall extending vertically downward (upward) from the upper surface (lower surface) of the treatment tank to the lower surface (upper surface) of the treatment tank is formed so as to cross the inside of the treatment tank. An opening such as a slit may be formed in the extending wall, and the tanks separated from each other may communicate with each other through the opening. In this case, the first partition wall is the same horizontal line as the height position of the highest point (highest point) of the opening formed in the extension wall from the upper end of the extension wall in the vertical direction of the extension wall. The second partition wall is the height of the lowest point (lowest point) of the opening formed in the extension wall from the lower end of the extension wall in the vertical direction. The part up to the same horizon as the position.

More specifically, as in the neutralization treatment device 1A shown in FIG. 3, in the neutralization treatment device 1 shown in FIG. 1, instead of the second partition wall 12, the inside of the treatment tank 2 is moved from the lower surface of the treatment tank 2 to the inside of the treatment tank 2. An extension wall 18 extending vertically upward so as to cross may be formed, and a slit-shaped opening 19 may be formed on the upper portion of the extension wall 18. In this example, the neutralization chamber 16 and the pre-discharge chamber 17 communicate with each other through the slit-shaped opening 19. Further, in this example, the second partition wall is the same horizontal line as the height position of the lower end of the slit-shaped opening 19 from the lower end of the extension wall 18 in the vertical direction of the extension wall 18 (shown in FIG. 3). It corresponds to the part up to the dotted line part).

The immobilization neutralizer of the present embodiment is necessarily formed on the lower surface of the neutralization chamber 16 and the horizontal plane lower than the height position of the upper end of the second partition wall 12, like the immobilization neutralizer 7 shown in FIG. It does not have to be housed in the enclosed space, and may be housed in a space surrounded by the lower surface of the neutralization chamber 16 and the same horizontal plane as the height position of the upper end of the second partition wall 12.

In the neutralization treatment device of the present embodiment, the immobilized neutralizing agent may be contained at least in the neutralization chamber, and is necessarily being immobilized in the introduction chamber 15 as in the neutralization treatment device 1 shown in FIG. It is not necessary to store the Japanese agent 7, but if the immobilization neutralizer 7 is contained in the introduction chamber 15, the amount of the immobilization neutralizer 7 contained in the treatment tank 2 can be increased, so that the neutralization efficiency can be increased. Can be further improved. Further, in the neutralization treatment device of the present embodiment, as described above, the neutralizing agent may be contained at least in the neutralization chamber, but is being fixed in each compartment (unit tank) in the treatment tank. The Japanese-style agent may be contained, and the immobilization neutralizing agent may be contained in the entire or partially of each compartment (unit tank). For example, the immobilization neutralizer 7 and the non-immobilization neutralizer 8 (or only the immobilization neutralizer 7) may be further contained in the discharge prechamber 17 of the neutralization treatment device 1 shown in FIG. Further, the discharge front chamber 17 is further partitioned by a partition wall, and the immobilized neutralizing agent 7 and the non-immobilizing neutralizing agent 8 (or only the immobilizing neutralizing agent 7) are housed in one of the partitioned tanks, and the other is accommodated. The tank may not contain the immobilized neutralizing agent 7 and the non-immobilized neutralizing agent 8, and may form a tank that communicates the one tank with the discharge port 4.

Further, the immobilization neutralizer of the present embodiment does not necessarily have to be integrally housed so as to communicate with different compartments (unit tanks) as in the immobilization neutralizer 7 shown in FIG. It may be separated and contained.

The neutralization treatment device of the present embodiment may have a plurality of first partition walls and a second partition wall, and the neutralization chamber may be further divided. FIG. 4 shows an example of a form in which the neutralization chamber is divided.

In the neutralization treatment device 1B shown in FIG. 4, the treatment tank 2B includes two first partition walls 11A and B and two second partition walls 12A and B, so that the partition walls alternate with each other. They are arranged at predetermined intervals. As a result, the treatment tank 2B becomes the introduction chamber 15 partitioned by the wall surface of the treatment tank 2B (the side wall surface on the introduction port 3 side) and the first partition wall 11A; the first partition wall 11A and the second partition wall 12A. First neutralization chamber 16A partitioned by; second neutralization chamber 20 partitioned by a second partition wall 12A and a first partition wall 11B; partitioned by a first partition wall 11B and a second partition wall 12B. The first neutralization chamber 16B; is composed of five compartments (unit tanks) of the discharge front chamber 17 partitioned by the second partition wall 12B and the wall surface of the treatment tank 2B (the side wall surface on the discharge port 4 side). The neutralization chamber 16A of 1 and the second neutralization chamber 20 share a second partition wall 12A, and the second neutralization chamber 20 and the first neutralization chamber 16B share a first partition wall 11B. .. That is, the treatment tank 2B shown in FIG. 4 has a form in which the neutralization chamber 16 shown in FIG. 1 is divided into three by two first partition walls 11A and 11B and two second partition walls 12A and 12B. In this embodiment, the untreated liquid can flow in the first neutralization chambers 16A and 16B from the lower surface side to the upper surface side of the treatment tank, and the second neutralization chamber 20 is from the upper surface side to the lower surface side of the treatment tank. The untreated liquid can be distributed toward. As described above, in the neutralization treatment device of the present embodiment, it is preferable that the first partition wall and the second partition wall are alternately arranged in the treatment tank.

In the treatment tank 2B, a second neutralization chamber 20 is formed so as to communicate the first neutralization chamber 16A and the first neutralization chamber 16B. The first neutralization chamber 16A and the second neutralization chamber 20 communicate with each other between the upper surface of the treatment tank 2B and the upper end of the second partition wall 12A, and the second neutralization chamber 20 and the first neutralization chamber 16B Communicates between the lower surface of the processing tank 2B and the lower end of the first partition wall 11B. As a result, the untreated liquid that has passed through the first neutralization chamber 16A further passes through the second neutralization chamber 20, the first neutralization chamber 16B, and the pre-discharge chamber 17 in the above order, and is discharged to the outside as a treated liquid. Will be done.

Further, in the neutralization treatment device of the present embodiment, the introduction port is formed in a long pipe shape and extends to the lower surface side of the treatment tank so that the untreated liquid is extended from the lower surface side to the upper surface side of the treatment tank. May be distributed. For example, in the neutralizing treatment device 1B shown in FIG. 4, a second partition wall that is the same as the second partition walls 12A and 12B is formed in the introduction chamber 15, and the introduction port 3 (long length) is formed in one of the divided tanks. A pipe-shaped end) is formed at a position lower than the upper end of the second partition wall, the untreated liquid is circulated from the lower surface side to the upper surface side of the treatment tank, and the untreated liquid has passed through one of the tanks. May be circulated in the other tank from the upper surface side to the lower surface side, and may be circulated to the first neutralization chamber 16A. As a result, the ratio of the volume flowing from the lower surface side to the upper surface side is increased, so that the neutralization efficiency is further improved.

In the present embodiment, the ratio of the volume of the neutralizing chamber to the total volume of the treatment tank is preferably 50% by volume or more, and more preferably 70% by volume or more and 80% by volume or less. When the volume ratio of the neutralization chamber is 50% by volume or more, the capacity of the immobilized neutralizing agent in the neutralizing chamber can be sufficiently large, so that the neutralization efficiency of the immobilized neutralizing agent is further improved and neutralization is performed. Further miniaturization of the processor becomes possible.

In the neutralization treatment device of the present embodiment, it is not always necessary to house the non-immobilization neutralizer 8 in the treatment tank 2 as in the neutralization treatment device 1 shown in FIG. 1, but the non-immobilization neutralizer is fixed. By accommodating on the neutralizing agent, when the non-immobilizing neutralizing agent is contained on the immobilizing neutralizing agent, the formed gap is filled with the granular neutralizing agent of the non-immobilizing neutralizing agent. Since it collapses, the untreated liquid reacts with the non-immobilization neutralizer, and the non-immobilization neutralizer can be efficiently consumed. As a result, the required amount of the neutralizing agent (granular neutralizing agent) to be filled (accommodated) in the neutralizing treatment device can be reduced, so that the neutralizing treatment device can be further miniaturized.

The immobilized neutralizing agent of the present embodiment is not particularly limited as long as it has a form in which the granular neutralizing agent is bound via a binder, and may be, for example, a block-shaped form.

The immobilized neutralizer can be obtained, for example, by heating the container with the granular neutralizer and the binder contained in the container (for example, the treatment tank) in the neutralizer. The heating temperature is, for example, 60 ° C. or higher and 200 ° C. or lower. From the viewpoint of container durability, the material of the container is usually an olefin resin, and the heating temperature is related to the heat resistant temperature of the treatment tank. Is preferably 150 ° C. or lower.

(Granular neutralizer)
The granular neutralizing agent is not particularly limited, and examples thereof include calcium carbonate, slaked lime, caustic soda, soda ash, quicklime, limestone, moss soil lime, and magnesium oxide. These granular neutralizers can be used alone or in combination of two or more. Of these, calcium carbonate is usually used, and calcium carbonate may be used, for example, in the form of crushed stone of white limestone (for example, cold water stone). As these granular neutralizers (for example, crushed white limestone), commercially available products classified by a predetermined particle size can be used.

The granular neutralizer may be composed of only the granular neutralizers classified into one class, but it is preferable that the granular neutralizers are two or more kinds classified into different classes. By being composed of two or more kinds of granular neutralizers, the bulk density and total surface area of the entire granular neutralizer can be increased, and the neutralization treatment speed of the untreated liquid and the neutralization efficiency of the entire granular neutralizer can be improved. Therefore, it is preferable.

(Binder)
The binder is not particularly limited, and for example, an inorganic binder (for example, gypsum, cement, weak alkaline cement, sodium silicate (water glass), etc.), a natural binder (for example, starch paste, furin, glue, etc.), Examples thereof include a resin, and a resin is preferable from the viewpoint of improving the adhesiveness with the granular neutralizing agent.

Examples of the form of the resin before heating include liquid resin, granule resin, powder resin, and the like, and powder resin is preferable. Since the binder is a powder resin, when the powder resin is melted, it becomes a granular form, so that the binder and the granular neutralizer can be bonded by point contact. The immobilized neutralizer of the present embodiment does not necessarily have to bond the binder and the granular neutralizer by point contact. For example, a liquid resin is used as the binder to form a part of the surface of the granular neutralizer. May be coated and bonded.

As the powder resin, a powder resin or a pulverized product of a granule resin (for example, a pellet resin) commercially available for coating and for a sintering material can be used.

Examples of the type of resin include styrene-based resins (for example, polystyrene, styrene-acrylonitrile copolymer (AS resin), styrene-acrylic nitrile-butadiene copolymer (ABS resin), etc.), polyester-based resins (for example, polyethylene). Telephthalate, polybutylene terephthalate, etc.), vinyl halide resin (eg, polyvinyl chloride, etc.), vinyl alcohol resin (eg, polyvinyl acetal resin, polyvinyl butyral resin, etc.), vinyl ester resin (eg, polyvinyl acetate, etc.) ), Polycarbonate resins (eg, aromatic polycarbonates, aliphatic polycarbonates, etc.), polyamide resins (eg, aromatic polyamides, aliphatic polyamides, etc.), (meth) acrylic resins (eg, (poly (meth) acrylic acids). (Esters, etc.), fluororesins, cellulose-based resins, modified silicone-based resins, olefin-based resins and other thermoplastic resins; epoxy-based resins, urethane-based resins and other thermosetting resins, etc. These resins include 1 The seeds can be used alone or in combination of two or more. Among these, a resin having excellent water resistance and acid resistance is preferable, and an olefin resin is more preferable. As a result, the adhesiveness with the granular neutralizing agent is improved, and the water resistance and acid resistance of the obtained immobilized neutralizing agent are excellent, so that the durability of the immobilized neutralizing agent can be improved.

Examples of the olefin resin include olefin homopolymers such as polyethylene and polypropylene, copolymers of these olefins (for example, ethylene-propylene copolymers, etc.), and copolymers of these olefins and copolymerizable monomers. (For example, an ethylene-vinyl acetate copolymer (EVA resin), etc.) and the like can be mentioned. These olefin resins can be used alone or in combination of two or more.

The amount of the binder added is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.3% by mass or more and 7% by mass or less, and 0. It is more preferably 5.5% by mass or more and 5% by mass or less. When the binder ratio is 0.1% by mass or more, the bondability between the binder and the granular neutralizer can be strengthened, and when the binder ratio is 10% by mass or less, the binder is on the surface of the granular neutralizer. It is possible to reduce (suppress) the functional deterioration of the granular neutralizing agent due to the coating.

The binder preferably contains an antibacterial agent and / or an antifungal agent. By containing an antibacterial agent and / or an antifungal agent, the growth of fungi (molds) in the container can be effectively suppressed, and the discharge of the treated liquid contaminated with the fungi (molds) can be suppressed. In addition, the formation of biofilm and / or gel-like viscous substance in the neutralization treatment device can be suppressed, and the occurrence of clogging can be suppressed. Further, in the heating step, the antibacterial (antifungal) action can be more effectively exerted by the synergistic action with the heat bactericidal action against the bacteria adhering to the surface of the granular neutralizing agent.

Antibacterial agents and / or antifungal agents include metals such as silver, copper and zinc, metal-supported zeolites, metals with photocatalytic activity, inorganic antibacterial agents such as metal compounds such as metal oxides, hinokithiol-based and chitosan-based agents. Examples include natural organic antibacterial agents (antifungal agents) such as copper extract type and eucalyptus, synthetic organic antibacterial agents (antifungal agents), and organic compound agents. These antibacterial agents (antifungal agents) may be used alone or in combination of two or more. Among these, a synthetic organic antibacterial agent (antifungal agent) is preferable from the viewpoint of effectively acting on both bacteria and mold.

Synthetic organic antibacterial agents and / or antifungal agents include nitrogen-containing heterocyclic agents, aldehydes, phenols, biguanides, nitriles, halogens, anilides, disulfides, thiocarbamate, and quaternary organic silicon. Examples thereof include antibacterial agents and / or antifungal agents such as ammonium salt-based, quaternary ammonium salt-based, amino acid-based, organic metal-based, alcohol-based, carboxylic acid-based, ester-based, thiazolin-based, and cationic polymer. These synthetic organic antibacterial agents and / or fungicides may be used alone or in combination of two or more.

The antibacterial agent and / or antifungal agent preferably has sustained release property from the viewpoint of sustaining the antibacterial (antifungal) effect for a long period of time.

The amount of the antibacterial agent and / or the fungicide added is, for example, 0.1% by mass or more and 30% by mass or less with respect to 100% by mass of the binder (for example, resin). When the ratio of the antibacterial agent and / or the antifungal agent is 0.1% by mass or more, the antibacterial (antifungal) effect can be effectively maintained during the period of use of the neutralizing treatment device.

The immobilization neutralizer of the present embodiment may be obtained by combining the binder and the granular neutralizer, but as in the immobilization neutralizer 7 shown in FIG. 2, the binder and the granular neutralizer are the points. Contacting and binding is preferable because the neutralization efficiency of the neutralizing agent is improved and the toughness of the immobilized neutralizing agent is improved.

The material of the treatment tank of the present embodiment is not particularly limited, and a material usually used as the material of the container of the neutralizing treatment device can be used, but from the viewpoint of excellent water resistance and acid resistance and improvement of durability. , An olefin resin is preferable. Examples of the olefin-based resin include the olefin-based resin exemplified in the section of binder.

The neutralization treatment device of the present embodiment does not necessarily have to form the detection sensor 5 and the emergency discharge port 6 as in the neutralization treatment device 1 shown in FIG. 1, and may further include other components. good.

The neutralizing treatment device of the present embodiment is applied to a latent heat recovery type heat exchanger such as a latent heat recovery type hot water supply device, and neutralizes the untreated liquid generated in the latent heat recovery type heat exchanger and discharges it to the outside. It can be suitably applied to a processor.

1,1A, 1B ... Neutralizer 2,2A, 2B ... Treatment tank 3 ... Introduction port 4 ... Discharge port 5 ... Detection sensor 6 ... Emergency discharge port 7 ... Immobilization neutralizer 8 ... Non-immobilization neutralizer 11, 11A, 11B ... 1st partition 12, 12A, 12B ... 2nd partition 15 ... Introduction chamber 16 ... Neutralization chamber 16A, B ... 1st neutralization chamber 17 ... Pre-discharge chamber 18 ... Extension wall 19 ... Slit Shaped opening 20 ... Second neutralization chamber 21 ... Granular neutralizer 21A ... Granular neutralizer belonging to large class 21B ... Granular neutralizer belonging to small sudden 22 ... Resin (binder)
31 ... Electrode rod 32 ... Detector

Claims (9)

The inlet of the untreated liquid and
A treatment tank that neutralizes the untreated liquid to obtain a treated liquid,
It has a discharge port for the treated liquid and
The treatment tank
At least one first partition wall extending vertically downward from the upper surface of the treatment tank so as to cross the inside of the treatment tank, and vertically upward so as to cross the inside of the treatment tank from the lower surface of the treatment tank. Partitioned by at least one extending second bulkhead,
By forming the lower end of the first partition wall at a position lower than the upper end of the second partition wall, the untreated liquid is formed so that the untreated liquid can flow from the lower surface side to the upper surface side of the treatment tank. Neutralization chamber and
The neutralizing chamber contains at least an immobilized neutralizing agent in which the granular neutralizing agent is integrated via a binder, and a non-immobilized neutralizing agent consisting of an unimmobilized granular neutralizing agent. fruit,
In the neutralization chamber, the non-immobilization neutralizer is housed on the immobilization neutralizer.
The immobilized neutralizing agent and the non-immobilized neutralizing agent are housed in a space surrounded by a lower surface of the neutralizing chamber and a horizontal plane equal to or lower than the height position of the upper end of the second partition wall. and wherein the are,
Neutralizer. The treatment tank
The treatment tank is partitioned from the upper surface side to the lower surface side of the treatment tank by being partitioned by a first partition wall extending downward in the vertical direction so as to cross the inside of the treatment tank from the upper surface of the treatment tank and a wall surface of the treatment tank. It is characterized by further including an introduction chamber formed so that the untreated liquid can be circulated toward the surface.
The neutralization treatment device according to claim 1. The introduction chamber and the neutralization chamber share the first partition wall so that the untreated liquid that has passed through the introduction chamber passes through the neutralization chamber.
The neutralization treatment device according to claim 2. The treatment tank
By being partitioned by a second partition wall extending vertically upward from the lower surface of the treatment tank so as to cross the inside of the treatment tank, and a wall surface of the treatment tank.
It is characterized by further including a discharge pre-chamber formed so that the untreated liquid can flow from the upper surface side to the lower surface side of the treatment tank.
The neutralizer according to any one of claims 1 to 3. The neutralization chamber and the pre-discharge chamber share the second partition wall so that the untreated liquid that has passed through the neutralization chamber passes through the pre-discharge chamber.
The neutralization treatment device according to claim 4. The ratio of the volume of the neutralization chamber to the total volume of the treatment tank is 50% by volume or more.
The neutralizer according to any one of claims 1 to 5. The binder contains an antibacterial agent and / or an antifungal agent.
The neutralizer according to any one of claims 1 to 6. The ratio of the antibacterial agent and the fungicide to the entire binder is 0.1% by mass or more and 30% by mass or less.
The neutralizing treatment device according to claim 7. The granular neutralizing agent is two or more kinds of granular neutralizing agents classified into different classes.
The neutralizer according to any one of claims 1 to 8.

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