JP7306713B2 - processing equipment - Google Patents

Description

The present invention relates to a treatment apparatus, and more specifically, it can be applied to various treatments such as water treatment, reaction, mixing, heating, and heat retention, and not only can the installation area be greatly reduced, but the durability of movable members can be improved. , and relates to a processing apparatus capable of rapid processing.

Conventionally, in order to perform various types of treatment such as water treatment, it was necessary to install large-scale treatment facilities and related facilities, requiring a vast facility site.

The present inventor has previously proposed an epoch-making technique that can significantly reduce the installation area of a water treatment device (Patent Document 1).

Patent Document 1 discloses a technique in which a water tank is divided into two upper and lower chambers, water for adjusting the water level is supplied to and discharged from the lower chamber, and the partition wall is moved up and down to take in and out the water to be treated in the upper chamber. Disclose.

Although this technology is an epoch-making technology, there are still problems to be solved in terms of further improving the durability of movable members such as partition walls.

Although Patent Document 2 discloses a flexible processing bag, it does not disclose how the processing bag is used.

Japanese Patent No. 3492300 Japanese Patent No. 2625590

An object of the present invention is to provide a treatment apparatus that can be applied to various treatments such as water treatment, reaction, mixing, heating, heat retention, etc., can greatly reduce the installation area , and can perform rapid treatment.

Other objects of the present invention will become clear from the following description.

The above problems are solved by the following inventions.

The invention according to claim 1,
A water treatment device that agglomerates and agitates in a treatment tank body, settles and separates sludge and treated liquid, and takes out the obtained treated liquid,
Equipped with a horizontally long cylindrical processing tank body made of a hard material that can maintain a fixed shape and is not deteriorated by chemicals,
A hollow shaft having a supply/discharge nozzle and a discharge suction port for supplying the liquid to be processed to the inside of the processing tank body and discharging the processing liquid from the inside of the processing tank body is provided inside the processing tank body,
A rotation operation means for rotating the hollow shaft around its axis,
The water treatment apparatus further comprises an agitating section supported by the hollow shaft, arranged inside the treatment tank body, and rotated by the rotation of the hollow shaft.
The invention according to claim 2,
2. The water treatment apparatus according to claim 1, further comprising detecting means for detecting that the inside of the treatment tank main body is filled with liquid.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a treatment apparatus that can be applied to various treatments such as water treatment, reaction, mixing, heating, and heat insulation, and that not only can significantly reduce the installation area , but also can perform rapid treatment.

Schematic configuration diagram showing an embodiment of a processing apparatus Schematic perspective view showing a stirring unit Schematic perspective view showing another example of the stirring unit Schematic perspective view showing still another example of the stirring unit FIG. 4 is a diagram for explaining a method of processing a liquid to be processed by a processing apparatus according to an embodiment; FIG. 4 is a diagram for explaining a method of processing a liquid to be processed by a processing apparatus according to an embodiment; FIG. 4 is a diagram for explaining a method of processing a liquid to be processed by a processing apparatus according to an embodiment; FIG. 4 is a diagram for explaining a method of processing a liquid to be processed by a processing apparatus according to an embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an embodiment of a processing apparatus. FIG. 1 shows a state in which the hollow shaft 11 is positioned to extend the supply/discharge nozzle 11c vertically downward.

This processing apparatus T1 comprises a processing tank 1, as shown in FIG. The processing tank 1 is a container for processing various liquids inside the processing tank main body 10 . Here, the treatment in the present invention means performing at least one of liquid mixing, stirring, agglomeration, reaction, heating, cooling, and heat retention.

The treatment tank 1 shown in the present embodiment is a treatment tank 1 with a stirring function that can be suitably used for water treatment in which a liquid to be treated is coagulated, stirred, sedimented and separated by a coagulant to obtain clear treated water. exemplified.

The processing tank 1 has a hollow shaft 11 and an agitating section 13 inside a processing tank main body 10 .

The processing tank main body 10 is characterized by being made of a hard material and formed in a horizontally long shape. Here, the horizontally long shape means that when viewed from any horizontal direction, it is horizontally long (horizontal direction (inner width) is wider than vertical direction (depth)), and when viewed from any horizontal direction, A shape that does not look vertically long (the horizontal direction (inner width) is narrower than the vertical direction (depth)).

Therefore, even if the horizontally elongated shape is a point-symmetrical shape with no directivity, such as a square or a circle when viewed from above, if the depth is shallower than the inner diameter It is included because it is horizontally long when viewed from any direction, and is not vertically long when viewed from any horizontal direction. In the case of a cylinder whose axis is horizontal, the inner diameter of the cylinder is the depth. It is horizontally long when viewed from the vertical direction) and is not vertically long when viewed from any horizontal direction, so it is included in the horizontally long shape. When the processing tank main body 10 has a cylindrical shape, it is preferable that the inner length of the cylinder in the longitudinal direction is about 1.2 to 2.5 times the inner diameter of the cylinder.

As will be described later, it has been confirmed by the present inventors that the settling speed of flocculated flocs is significantly increased in a horizontally elongated processing tank as compared with a vertical processing tank. In addition, the depth of the aggregated flocs is shallower in the horizontal processing tank.

The processing tank main body 10 has a laterally long cylindrical shape with a horizontal axis. The processing tank main body 10 is fixedly installed on the floor by means of legs 10c attached to the lower part of the outer wall surface. The shape of the leg portion 10c is not limited at all, and it may be like a housing that covers the entire processing tank main body 10. FIG.

Examples of hard materials that can be used include polyethylene, FRP, metal, and concrete. The material of the processing tank main body 10 is not particularly limited as long as it can maintain a fixed shape and is not deteriorated by chemicals or the like.

The hollow shaft 11 is preferably made of a rigid pipe material such as a stainless steel pipe or an FRP pipe. The cross-sectional shape of the hollow shaft 11 is not particularly limited, and may be a circular shape, a square shape, or a polygonal shape such as a hexagon. The hollow shaft 11 is arranged horizontally on the central axis of the processing tank main body 10 . Both end portions of the hollow shaft 11 are passed through the central portions of both end surface portions 10a and 10d of the processing tank body 10 to face outward. The hollow shaft 11 is rotatable about its axis.

A stirring unit 13 supported by a hollow shaft 11 is provided inside the processing tank main body 10 . The stirring part 13 is rotated by the rotation of the hollow shaft 11 .

FIG. 2A is a schematic perspective view showing a stirring section.
The stirring part 13 is made of a rigid plate material such as a polycarbonate plate, a stainless steel plate, an FRP plate, or the like. As shown in FIGS. 1 and 2A, the agitating section 13 has a frame shape extending from the vicinity of one end surface portion 10a of the processing tank main body 10 to the vicinity of the other end surface portion 10d. The stirring unit 13 includes a pair of substantially rectangular side plates 13b and 13c fixed to both end portions of the hollow shaft 11, and a pair of beam plates 13d connecting both ends of the side plates 13b and 13c to form a frame shape. 13e. The pair of side plates 13 b and 13 c penetrate through the hollow shaft 11 at the center and are fixed to the outer surface of the hollow shaft 11 . The pair of beam plates 13d and 13e are wider than the side plates 13b and 13c.

A total of four stirring plates 13a are provided on the pair of beam plates 13d and 13e of the stirring section 13. As shown in FIG. Each agitating plate 13a is a plate-like member, and is erected from both side edges of the beam plates 13d and 13e toward the central axis of the processing tank main body 10, that is, toward the hollow shaft 11. there is Each stirring plate 13a has a length between the pair of side plates 13b and 13c, that is, a length substantially equal to the pair of beam plates 13d and 13e. Each agitating plate 13a has a width that reaches a substantially intermediate position between each beam plate 13d, 13e and the hollow shaft 11. As shown in FIG. Each agitating plate 13a may be formed integrally with each beam plate 13d, 13e by bending, or may be formed separately from each beam plate 13d, 13e and attached to each beam plate 13d, 13e. good.

FIG. 2B is a schematic perspective view showing another example of the stirring section.
As the stirring part 13, a plurality of fin-like stirring plates 13f may be directly attached to the outer peripheral surface of the hollow shaft 11, as shown in FIG. 2B. In this case, the stirring plate 13f may be flat plate-like or twisted curved plate-like. When the agitation plates 13f are twisted in a fixed direction, the plurality of agitation plates 13f constitute a fan that causes a constant flow of fluid.

FIG. 2C is a schematic perspective view showing still another example of the stirring section.
Each stirring plate 13a on the outer peripheral side of the stirring section 13 may be composed of a plurality of fin-like pieces, as shown in FIG. 2C. In this case, the plurality of fin pieces forming each agitating plate 13a may be flat plate-like or twisted curved plate-like.
Furthermore, as the stirring section 13, as shown in FIG. 2C, each stirring plate 13a on the outer peripheral side and a plurality of stirring plates 13f attached to the outer peripheral surface of the hollow shaft 11 may be used together. In this case, each stirring plate 13a on the outer peripheral side and the plurality of stirring plates 13f attached to the hollow shaft 11 may be rotated in the same direction or in opposite directions. In order to rotate the side plates 13b and 13c of the stirring section 13 in the opposite direction of the hollow shaft 11, reverse gears may be interposed between the hollow shaft 11 and the side plates 13b and 13c.

One end of the hollow shaft 11 serves as a liquid supply/discharge port 12, as shown in FIG. The supply/discharge port 12 is for supplying the liquid to be processed to the inside of the processing tank main body 10 and for discharging the processing liquid from the inside of the processing tank main body 10 . One end of the hollow shaft 11 is rotatably supported by the outer wall of the processing tank body 10 through a swivel joint 12a while passing through one end surface 10a of the processing tank body 10 . One end of the hollow shaft 11 is rotatably connected to a supply/discharge pipe 14 installed outside the processing tank body 10 . The supply/discharge pipe 14 is for supplying the liquid to be processed to the inside of the processing tank main body 10 and for discharging the processing liquid from the inside of the processing tank main body 10 . The hollow shaft 11 is rotatable about its axis with respect to the supply/discharge pipe 14 , and can supply and discharge liquid to/from the supply/discharge pipe 14 .

A motor 19 is installed on the other end face portion 10d of the processing tank main body 10 so as to be positioned on the other end side of the hollow shaft 11 and serve as a rotating operation means. The drive shaft of the motor 19 is rotatable through the outer wall of the other end surface 10d of the processing tank body 10 via a rotary seal 12c, and is connected to the other end of the hollow shaft 11 by a joint 12b. The motor 19 rotates the hollow shaft 11 around its axis, and the rotation of the hollow shaft 11 rotates the stirring section 13 . Joint 12b may be an expansion joint to accommodate thermal expansion and contraction of hollow shaft 11 .

It should be noted that the rotation operation means for rotating the hollow shaft 11 about its axis may be performed not by the motor 19 but by various other rotary drive power (including combustion engine, water power, wind power and other natural power). cattle and horses) or manually (human power).

The inside of the hollow shaft 11 is closed by a flange 11a near the center. The inside of the hollow shaft 11 forms a supply/discharge path 11b from the supply/discharge port 12 to the flange 11a. The supply/discharge path 11b is a supply/discharge path for the liquid to be processed and the liquid to be treated. The supply/discharge path 11b communicates with the supply/discharge nozzle 11c in the vicinity of the flange 11a. The supply/discharge nozzle 11c is erected substantially perpendicularly to the hollow shaft 11 and extends toward the beam plate 13e of the stirring section 13 (see FIGS. 2A and 2C). A tip portion of the supply/discharge nozzle 11c serves as a discharge suction port 11d.

The liquid supplied from the supply/discharge pipe 14 passes through the supply/discharge path 11b and the supply/discharge nozzle 11c, and is discharged into the processing tank main body 10 from the discharge suction port 11d. Further, the liquid in the processing tank main body 10 is sucked from the discharge/suction port 11d and discharged to the supply/discharge pipe 14 through the supply/discharge nozzle 11c and the supply/discharge path 11b.

In this processing apparatus T1, the supply of the liquid to be processed to the inside of the processing tank body 10, the discharge of the processing liquid from the inside of the processing tank body 10, and the stirring by the stirring section 13 in the processing tank body 10 are all carried out in the hollow space. Since this can be performed by the shaft 11, there is no need to separately provide a supply pipe, a discharge pipe, and a shaft for rotating the agitator 13, and the structure of the treatment tank main body 10 can be simplified.

The supply/discharge pipe 14 branches into a supply pipe 14A and a discharge pipe 14B. The supply pipe 14A can be opened and closed by a supply valve 15A whose opening and closing is controlled by control means (not shown). The discharge pipe 14B can be opened and closed by a discharge valve 15B whose opening and closing is controlled by control means.

The liquid in the processing tank body 10 is discharged from the discharge pipe 14B by the discharge pump 18 when the discharge valve 15B is open. The discharge pipe 14B is provided with a turbidity sensor 17 that measures the turbidity of the liquid flowing through the discharge pipe 14B.

The discharge pipe 14B, which has passed through the turbidity sensor 17 and the discharge pump 18, is connected to the treated liquid discharge pipe 14C via an on-off valve 15C. Therefore, the inner space 10b of the processing tank main body 10 can discharge the treated water to the outside of the processing tank main body 10 through the discharge pipe 14B and the treated liquid outflow pipe 14C. Also, the discharge pipe 14B is connected to the sludge discharge pipe 14D via an on-off valve 16 . Therefore, the inner space 10b of the processing tank main body 10 can discharge sludge to the outside of the processing tank main body 10 through the discharge pipe 14B and the sludge discharge pipe 14D. The on-off valves 15C and 16 and the discharge pump 18 are all controlled by control means (not shown). The detected value of the turbidity sensor 17 is sent to the control means for controlling the discharge valve 15B and the on-off valves 15C and 16.

In this treatment apparatus T1, if the outlets of the treated water and sludge from the sludge discharge pipe 14D and the treated water discharge pipe 14C are set below the water surface of the liquid in the treatment tank main body 10, the treated water and sludge can be siphoned. It can also be easily ejected by the effect. A discharge pump 18 is used to stabilize the discharge speed of treated water and sludge, but it is also possible to discharge easily by a siphon effect. Therefore, the discharge pump 18 is not essential in this processing apparatus T1.

It is preferable that the processing tank 1 has a detection means for detecting that the inside of the processing tank main body 10 has become full. A water level sensor for detecting the water level in the processing tank main body 10 can be used as the detection means. When liquid is supplied into the processing tank body 10, the water level in the processing tank body 10 gradually rises. The water level sensor detects the water level in the processing tank main body 10 and sends it to the control means. When the control means detects that the water level has reached a predetermined level, the supply valve 15A is closed to control the water level in the processing tank. The inside of the main body 10 can be filled with water.

Next, a method for treating the liquid to be treated using this treating apparatus T1 will be described with reference to FIGS. 3 to 6. FIG.
3 to 6 are diagrams for explaining a method of processing a liquid to be processed by the processing apparatus according to the embodiment.

First, as shown in FIG. 3, the processing tank main body 10 and the agitator 13 are stopped to be in a stationary state. At this time, it is preferable to stop the hollow shaft 11 at a position where the supply/discharge nozzle 11 c (see FIG. 1) extends vertically downward from the hollow shaft 11 .

Next, the supply valve 15A is opened, the discharge valve 15B is closed, and the liquid to be processed 200 is supplied into the processing tank main body 10 through the supply pipe 14A and the supply/discharge pipe 14 (see FIG. 1) to treat the inside. Fill with target liquid.

When the liquid to be processed is injected into the processing tank main body 10, the detecting means for detecting that the inside of the processing tank main body 10 is full of liquid detects the full liquid state of the processing tank main body 10, and the control means The supply valve 15A is controlled to be closed.

A coagulant is mixed in the liquid to be processed, and after filling the processing tank main body 10 with the liquid to be processed, the aggregating agent and the liquid to be processed are reacted by rotating the stirring unit 13 to rotate the stirring plate 13a. and the agglomeration stirring process is performed for a predetermined period of time. The flocculant may be introduced from the open portion of the upper surface of the processing tank main body 10, or mixed through the supply pipe 14A. The lid may be opened only when the flocculant is added.

After the agglomeration stirring process, as shown in FIG. 4, the processing tank main body 10 and the stirring section 13 are stopped to be in a stationary state. At this time, the hollow shaft 11 is stopped at a position where the supply/discharge nozzle 11 c (see FIG. 1) extends vertically downward from the hollow shaft 11 . After that, the sludge 201 in the treatment tank main body 10 settles and is separated from the supernatant treated water 202 . At this time, the discharge suction port 11d at the tip of the supply/discharge nozzle 11c is located in the treated water near the interface when the sludge in the treatment tank body 10 settles and is separated from the supernatant treated water ( That is, it is positioned slightly above the interface between the sludge and the treated water).

After the sedimentation separation, as shown in FIG. 5, the discharge valve 15B and the on-off valve 15C are opened, the discharge pump 18 is driven, and the clear supernatant treated water 202 in the processing tank main body 10 is treated from the discharge pipe 14B. The liquid is discharged to the outside through the liquid outflow tube 14C.

When the interface of the sludge 201 is below the discharge suction port 11d, the treated water 202 is sucked and discharged to the outside from the treated liquid outflow pipe 14C. When the interface of the sludge 201 rises above the discharge suction port 11d, the sludge 201 is sucked and discharged to the discharge pipe 14B. When the treated water 202 and sludge 201 are discharged, the turbidity sensor 17 monitors the turbidity of the liquid flowing through the discharge pipe 14B. When the sludge 201 is sucked, the turbidity sensor 17 detects a change in turbidity. Upon this detection, as shown in FIG. 6, the control means closes the on-off valve 15C to the treated liquid outflow pipe 14C and opens the on-off valve 16 to the sludge discharge pipe 14D. Therefore, only clear treated water 202 can be discharged from the treated liquid outflow pipe 14C. The sedimented sludge 201 is discharged outside from the sludge discharge pipe 14D. Since the sludge discharge pipe 14D is branched from the discharge pipe 14B, the sludge 201 can also be discharged from the supply/discharge port 12, and there is no need to separately provide an opening for sludge discharge in the treatment tank body 10. It should be noted that once the sludge 201 is discharged, the sludge interface level is lowered, so the sludge 201 will not be discharged for a certain period of time after the next batch.

In order to process the next liquid to be processed, as shown in FIG. 3, the discharge valve 15B and the on-off valves 15C and 16 are closed again, and the supply valve 15A is opened to supply the liquid to be processed 200 into the processing tank body 10. .

When the liquid to be treated 200 is supplied, sludge 201 that has settled during the previous treatment may remain in the treatment tank main body 10 . This is preferable because it is possible to reduce the amount of the flocculant to be charged and to reduce the running cost.

In this treatment apparatus T1, the treatment tank main body 10 for treatment is formed in a laterally long shape such as a cylindrical shape, so that effective floc formation by coagulation and sedimentation of sludge can be achieved. Since the treatment tank body 10 has a structure in which the vertical direction is shortened relative to its volume, the residual recycled sludge in the tank, which has settled down once, and the newly supplied treated water are stirred and mixed in the upper and lower parts. Accelerated in a short time, ideal floc formation is achieved.

In addition, in this treatment apparatus T1, the coagulation speed can be increased (rapid sedimentation separation), and a high degree of clarity of the treated water can be ensured. Downflow sludge along the circular wall surface of the treatment tank body 10 seen from the side is the cause of the high-speed sedimentation phenomenon. Therefore, when the processing tank main body 10 is not cylindrical, it is preferable to provide an inclined surface like a circular wall near the bottom of the processing tank main body 10 .

Furthermore, in the processing apparatus T1, the processing tank main body 10 has a horizontally long shape with a low vertical ratio and a long horizontal ratio.

Further, in the processing apparatus T1, the processing tank main body 10 has a shape that can be horizontally extended even if the height is restricted, so that the installation is easy and the capacity can be increased (the processing capacity can be increased). In addition, the processing tank main body 10 can ensure versatility in installation such as above floor, above ground, below ground, above water, underwater, and the like.

As described above, in the processing apparatus T1, the processing tank main body 10 for processing is formed in a laterally long shape such as a cylindrical shape, and therefore, compared with a vertically long cylindrical shape, the effect of speeding up the sedimentation separation is obtained. Play. In order to prove this, an experimental example is given below.

<Experimental example>
The inventor of the present invention has acquired patents of Japanese Patent Nos. 5498942 and 5705296 for processing tanks and processing equipment using cylindrical bags arranged vertically. The present inventor found that there is a clear difference between the completion time of the sedimentation separation of the patented technology and the completion time of the oblong cylindrical processing tank of the present invention with the same amount of water (volume).

Based on the discovery of this fact, we conducted laboratory experiments to (a) compare the speed of progress in sedimentation separation, and (b) confirm that there was no difference in the clarity of the supernatant after sedimentation. rice field.
In other words, in this lab experiment, we visually measured the sedimentation separation processing speed and processing results in the sedimentation separation cylindrical processing tank, which was placed vertically and horizontally. It is an experiment by a laboratory to compare and verify both.

(Experimental method and results)
Two one-liter beakers corresponding to simple cylindrical tanks without projections inside were prepared.
Raw water for the experiment was prepared by adding the following chemicals (a), (b), (c), and (d) under the same conditions necessary for sedimentation and stirring uniformly.
(a) Commercially available PAC (polyaluminum chloride) 10% liquid, 300ppm input
(b) Commercially available 10% NaOH solution is added for adjustment to pH 7.0
(c) 2g of powdered activated carbon for water treatment with a moisture content of 50% from Osaka Gas Co., Ltd.
(d) Mitsubishi Chemical's anionic polymer flocculant diluted 1000 times is added at 2ppm The beaker to be placed in the test set was prepared with a lid on the top to prevent water leakage, and both of them were prepared in such a way that the state inside could be clearly seen.

The open beaker was placed vertically, and the closed beaker was placed horizontally on its side, and both were simultaneously agitated for sedimentation for 1 minute and stopped.
A plurality of people simultaneously observed from the stop of stirring to the completion of sedimentation and separation.
As a result, it was found that the time to complete settling in both cases was clearly faster when placed on its side. Specifically, in this experiment, it was confirmed that the vertical beaker was completed in 30 seconds, while the horizontal beaker was completed in 5 to 6 seconds.

It was confirmed that there was no noticeable difference in the floc state of the two clarification sludges, and that there was no problem with the sedimentation separation effect.
The conclusion confirmed that the horizontal beaker sedimented approximately five times faster than the vertical beaker.
From the above experimental examples, in the case of the cylindrical horizontal processing tank of the present invention, it is possible to significantly shorten the processing time as compared with the processing tank in which the cylindrical shape is vertically elongated.

As described above, the treatment apparatus T1 according to the present invention is not limited to a water treatment apparatus that agglomerates and agitates water to separate treated water and sludge. can be widely applied to the use of treating and discharging the treated liquid after treatment.

1: Processing tank 10: Processing tank body 10b: Inner space 10c: Leg 11: Hollow shaft 12: Supply/discharge port 12a: Swivel joint 12b: Joint 12c: Rotary seal 13: Stirrer 13a: Stirring plate 14: Supply/discharge pipe 14A: Supply pipe 14B: Discharge pipe 15A: Supply valve 15B: Discharge valve 19: Motor 200: Liquid to be treated 201: Sludge 202: Treated water T1: Water treatment equipment

Claims (2)

A water treatment device that agglomerates and agitates in a treatment tank body, settles and separates sludge and treated liquid, and takes out the obtained treated liquid,
Equipped with a horizontally long cylindrical processing tank body made of a hard material that can maintain a fixed shape and is not deteriorated by chemicals,
A hollow shaft having a supply/discharge nozzle and a discharge suction port for supplying the liquid to be processed to the inside of the processing tank body and discharging the processing liquid from the inside of the processing tank body is provided inside the processing tank body,
A rotation operation means for rotating the hollow shaft around its axis,
A water treatment apparatus, comprising: a stirring section that is supported by the hollow shaft, is arranged inside the processing tank main body, and is rotated by the rotation of the hollow shaft. 2. A water treatment apparatus according to claim 1 , further comprising detecting means for detecting that the inside of said treatment tank main body is filled with liquid.

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