JP2022024862A - Processing unit and processing bag - Google Patents

Abstract

To provide a processing unit capable of steadily and speedily performing various processes such as water processing, a reaction, mixing, heating, thermal insulation and so on and a processing bag used therein.SOLUTION: A processing unit comprises: a processing bag body 10 which is formed in a closed state by a sheet having impermeability and flexibility, has a horizontal cylindrical shape in a solid liquid state, and is immersed in a beak water 300 stored in a water tank 2; a hollow shaft 11 which is arranged in the processing bag body and serves as a supply and discharge path for processing object liquid and processing liquid; and a shape retention frame 13 capable of rotation operation and stirring by being supported by the hollow shaft.SELECTED DRAWING: Figure 1

Description

The present invention relates to a processing apparatus and a processing bag capable of stable and rapid processing.

In the past, in order to perform various treatments such as water treatment, it was necessary to install a large-scale treatment facility and related facilities, which required a vast facility site.

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

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

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

Although Patent Document 2 discloses a treated bag that is impermeable and flexible, there is no disclosure as to how to use the treated bag.

Japanese Patent No. 3492300 Japanese Patent No. 2625590

An object of the present invention is to provide a processing apparatus capable of significantly reducing the installation area, improving the durability of the movable member, and performing rapid processing, and a processing bag used therefor.

Another object of the present invention is to provide a treatment apparatus applicable to various treatments such as water treatment, reaction, mixing, heating, and heat retention, and a treatment bag used therefor.

Other problems of the present invention will be clarified by the following description.

The above problems are solved by the following inventions.

The invention according to claim 1 is
A horizontally long processing bag body that is hermetically formed by a water-impermeable and flexible sheet and is immersed in a water tank that stores water that keeps the water level at all times.
A hollow shaft that is arranged inside the processing bag body and serves as a supply / discharge path for the processing target liquid that is supplied to the inside of the processing bag body and the processing liquid that is discharged to the outside from the processing bag body.
It is supported by the hollow shaft and is arranged inside the processing bag main body, and is provided with a shape holding frame that can be stirred and rotated.
The processing bag body has a horizontal cylindrical shape when it is full.
Moreover, the inside of the water tank is a treatment device characterized in that it is divided into an inner space of the treatment bag main body and an outer space in which the flooded water is stored.
The invention according to claim 2 is
The processing apparatus according to claim 1, further comprising a water filling means for supplying the filling water corresponding to the amount of liquid reduction when the treatment liquid is discharged from the inside of the treatment bag main body into the water tank.
The invention according to claim 3 is
The treatment apparatus according to claim 1 or 2, wherein the water tank has an overflow port for discharging a filled water corresponding to an increase in the amount of liquid when the liquid to be treated is supplied into the main body of the treatment bag.
The invention according to claim 4 is
The treatment apparatus according to any one of claims 1 to 3, wherein a treatment liquid outflow pipe and a sludge outflow pipe for discharging the treatment liquid in the treatment bag main body are connected to one end of the hollow shaft. Is.
The invention according to claim 5 is
A processing bag body that is formed in a sealed shape by a water-impermeable and flexible sheet and has a cylindrical shape when it is full.
A hollow shaft that is arranged inside the processing bag body and serves as a supply / discharge path for the processing target liquid that is supplied to the inside of the processing bag body and the processing liquid that is discharged to the outside from the processing bag body.
Supported by the hollow shaft and arranged inside the processing bag body, it has four stirring plates and a shape-retaining frame that can be rotated.
A treatment bag that is used by immersing it horizontally in a flooded water that keeps the water level at all times.
The invention according to claim 6 is
The processing bag according to claim 5, wherein both ends of the hollow shaft project to the outside of the processing bag body, and one end thereof serves as a supply / discharge port.
The invention according to claim 7 is
The processing bag according to claim 6, further comprising a detection means for detecting that the inside of the processing bag body is full.

According to the present invention, not only can the installation area be significantly reduced, but also the durability of the movable member can be further improved, and it is possible to provide a processing device capable of rapid processing and a processing bag used therefor.

Further, according to the present invention, it is possible to provide a treatment apparatus applicable to various treatments such as water treatment, reaction, mixing, heating, and heat retention, and a treatment bag used therefor.

Schematic block diagram which shows 1st Embodiment of a water treatment apparatus Schematic block diagram showing a processing bag Schematic perspective view showing the shape holding frame The figure explaining the treatment method of the liquid to be treated by the water treatment apparatus which concerns on 1st Embodiment. The figure explaining the treatment method of the liquid to be treated by the water treatment apparatus which concerns on 1st Embodiment. The figure explaining the treatment method of the liquid to be treated by the water treatment apparatus which concerns on 1st Embodiment. The figure explaining the treatment method of the liquid to be treated by the water treatment apparatus which concerns on 1st Embodiment. Schematic block diagram which shows the 2nd Embodiment of a water treatment apparatus

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a first embodiment of a water treatment apparatus.

As shown in FIG. 1, the water treatment device T1 is composed of a treatment bag 1 and a water tank 2 for accommodating the treatment bag 1 inside.

The treatment bag 1 is held in the water tank 2 in which the water filling 300 is stored, and is immersed in the water filling 300 so that the entire treatment bag main body 10 is lower than the water surface WL. Therefore, the inside of the water tank 2 is divided into an inner space 10b of the treatment bag main body 10 and an outer space 2a in which the flooded water 300 is stored.

The water tank 2 is formed of, for example, stainless steel, FRP, or the like in a box shape, a tank shape, or the like having an internal volume larger than the volume of the processing bag main body 10. The upper surface of the water tank 2 is open.

Since the water treatment device T1 immerses the flexible treatment bag 1 in the flooded water 300 of the water tank 2, no frame or housing for making the treatment bag 1 independent is required, and an installation space is required. As will be described later, it is possible to take advantage of the fact that the equipment cost can be significantly reduced by using the processing bag 1 which is inexpensive and has a simple structure.

Next, an example of the processing bag 1 will be described with reference to FIG.
FIG. 2 is a schematic configuration diagram showing a processing bag.

As shown in FIG. 2, the processing bag 1 is a bag-shaped container as a movable member that expands and contracts in order to process various liquids inside the processing bag main body 10. Here, the treatment in the present invention is at least one of mixing, stirring, agglutination, reaction, heating, cooling, and heat retention of the liquid.

The treatment bag 1 shown in the present embodiment is a treatment bag 1 having a stirring function that can be suitably used for water treatment in which the liquid to be treated is coagulated and stirred with a coagulant and separated by sedimentation to take out clear treated water. Illustrate.

The processing bag 1 is configured to have a hollow shaft 11 and a shape holding frame 13 in the processing bag main body 10.

The treatment bag main body 10 is hermetically formed by a water-impermeable and flexible sheet, and is formed so as to have a horizontally long shape when the liquid is full.
As described above, the processing bag main body has a horizontally long shape, and is characterized by having a horizontal cylindrical shape when the inside of the processing bag main body is full. As will be described later, it has been confirmed by the present inventor that the sedimentation rate of the aggregated flocs is considerably increased in the horizontal cylindrical shape as compared with the vertical processing bag.

The horizontal cylindrical shape is a state in which it is immersed in flooded water and extends in the horizontal direction for a long time, and its cross-sectional shape is circular. The length in the longitudinal direction of the cylinder is preferably about 1.2 times to 2.5 times the diameter of the cylinder.

Both ends of the cylindrical shape of the processing bag body 10 are closed. As the impermeable and flexible sheet, for example, a single-layer sheet or 2 using any one of a soft synthetic resin sheet such as vinyl chloride, polyethylene, ethylene vinyl acetate copolymer, urethane and the like, and a rubber sheet. Laminated sheets in which seeds or more are laminated, synthetic resin sheets, composite sheets in which rubber sheets and fabrics are laminated, and the like can be used.

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 view 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 horizontally arranged on the central axis of the processing bag main body 10. The hollow shaft 11 has both end portions penetrating the center portions of both end surface portions 10c and 10d of the processing bag main body 10 and facing outward. The processing bag main body 10 is fixed to the outer surface portion of the hollow shaft 11 at the central portions of both end surface portions 10c and 10d, and is held by the hollow shaft 11. The inside of the processing bag main body 10 is hermetically sealed.

In the present invention, the inside of the processing bag main body 10 is provided with a shape holding frame that can be stirred and rotated. The shape-retaining frame has a function of being able to perform stirring and rotation operations, but in order to exert such a function, the outer edge of the shape-retaining frame may be extended to ensure the stirring function by itself. Alternatively, the stirring plate may be fixed to the shape holding frame to ensure the stirring function.

FIG. 3 is a schematic perspective view showing a shape-retaining frame.
The shape-retaining frame 13 is made of a rigid plate material such as a polycarbonate plate, a stainless steel plate, and an FRP plate. As shown in FIGS. 2 and 3, the shape holding frame 13 is configured to have a frame shape extending from the vicinity of the one end surface portion 10c of the processing bag main body 10 to the vicinity of the other end surface portion 10d. The shape-retaining frame 13 is 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 that connect both ends of these side plates 13b and 13c to form a frame shape. , 13e and. The pair of side plates 13b and 13c penetrate the hollow shaft 11 at the central portion, and are fixed to the outer surface portion 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 shape holding frame 13. Each stirring plate 13a is a flat plate-shaped member, and is erected from both side edges of the beam plates 13d and 13e toward the central axis of the processing bag main body 10, that is, toward the hollow shaft 11. There is. Each stirring plate 13a has a length extending 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 stirring plate 13a has a width reaching a substantially intermediate position between the beam plates 13d and 13e and the hollow shaft 11. The stirring plates 13a may be integrally formed with the beam plates 13d and 13e by bending, or may be formed separately from the beam plates 13d and 13e and attached to the beam plates 13d and 13e. good.

As shown in FIGS. 1 and 2, one end of the hollow shaft 11 is a liquid supply / discharge port 12. One end of the hollow shaft 11 is rotatably connected to a supply / discharge pipe 14 projecting outward from the water tank 2 via a swivel joint 12a. The hollow shaft 11 is rotatable about an axis with respect to the supply / discharge pipe 14, and can supply and discharge liquid to and from the inside of the supply / discharge pipe 14.

The other end side of the hollow shaft 11 is rotatably supported by a rotary joint 12b provided on the outer wall portion of the water tank 2, and protrudes outward of the water tank 2. As shown in FIG. 1, a motor 19 is installed on the outer surface of the water tank 2 at the other end side of the hollow shaft 11. The motor 19 rotates the shape holding frame 13 and the stirring plate 13a around the axis together with the hollow shaft 11. The rotary joint 12b may be a swivel joint.

The rotation of the hollow shaft 11 may be performed not by the motor 19 but by various other rotational drive powers (including a combustion engine and natural forces such as hydraulic power and wind power), and may be performed by animals (cow and horses, etc.) or manually (human power). May be done by.

As shown in FIG. 2, the inside of the hollow shaft 11 is closed by a flange 11a near the central portion. In the hollow shaft 11, the supply / discharge port 12 to the flange 11a form a supply / discharge path 11b. The supply / discharge passage 11b communicates with the supply / discharge nozzle 11c in the vicinity of the flange 11a. The supply / discharge nozzle 11c is erected substantially perpendicular to the hollow shaft 11 and extends toward the beam plate 13e of the shape holding frame 13. The tip portion of the supply / discharge nozzle 11c is branched into a T shape in the vicinity of the beam plate 13e and has discharge / suction ports 11d and 11d in two directions.

Since the supply / discharge nozzle 11c extends toward the beam plate 13e of the shape holding frame 13, when the processing bag body 10 contracts and shrinks, it does not come into contact with the inner surface of the processing bag body 10. It does not inhibit the shrinkage of the processing bag body 10.

The liquid supplied from the supply / discharge pipe 14 is discharged into the processing bag main body 10 from the discharge / suction ports 11d and 11d via the supply / discharge passage 11b and the supply / discharge nozzle 11c. Further, the liquid in the processing bag main body 10 is sucked from the discharge / suction ports 11d and 11d, and is discharged to the supply / discharge pipe 14 via the supply / discharge nozzle 11c and the supply / discharge passage 11b.

The supply / discharge pipe 14 is branched 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 a 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 a control means.

As shown in FIG. 1, the liquid in the processing bag main 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 in the discharge pipe 14B.

The discharge pipe 14B that has passed through the turbidity sensor 17 and the discharge pump 18 is connected to the treatment liquid outflow pipe 14C extending to the upper surface of the water tank 2 via an on-off valve 15C. Therefore, the inner space 10b of the treatment bag main body 10 can supply the treated water to the outer space 2a of the treatment bag main body 10 in the water tank 2 by the discharge pipe 14B and the treatment liquid outflow pipe 14C. Further, the discharge pipe 14B is connected to the sludge discharge pipe 14D via an on-off valve 16. 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, 16.

It is preferable that the processing bag 1 has a detecting means for detecting that the inside of the processing bag main body 10 is full. As the detecting means, a pressure sensor that detects the pressure in the processing bag main body 10 can be used. When the liquid is supplied into the processing bag main body 10, the processing bag main body 10 gradually expands and the internal pressure rises. The pressure sensor detects the pressure in the processing bag main body 10 and sends it to the control means. When the control means detects that the predetermined pressure has reached a preset value, the pressure sensor closes the supply valve 15A to close the processing bag main body. It is possible to prevent 10 bursts and damages.

Further, as the detection means, the swelling condition of the processing bag main body 10 itself may be directly detected. For example, a string or belt is wrapped around the processing bag body 10, and a detection means such as a tension sensor is used to detect the tension of the string or belt when the liquid is supplied into the processing bag body 10 to expand and the outer diameter is expanded. It is possible to detect that the inside of the processing bag main body 10 is full. In this case as well, by closing the supply valve 15A by the control means based on the detection value of the tension sensor, it is possible to prevent the processing bag main body 10 from bursting or being damaged.

In order to prevent excessive expansion of the processing bag main body 10, an appropriate number of swelling prevention tapes or ropes are laid around the processing bag main body 10 and fixed, and the processing bag main body is inflated in a full state. It is also preferable to maintain the shape of 10.

The processing bag 1 may be provided with a degassing tube 20, and if there is air in the processing bag main body 10 in the process of reaching a full state, the air may be removed. The degassing pipe 20 extends from the degassing port 20a formed at the tip of the supply / discharge nozzle 11c through the supply / discharge passage 11b and the supply / discharge pipe 14 to the outside of the processing bag 1. The degassing port 20a maintains a space for air to pass between the shape-retaining frame 13 and the beam plate 13e. A degassing valve 20b is provided in the vicinity of the outlet of the degassing pipe 20 to the outside.

When the degassing tube 20 is provided in this way, degassing can be performed by detecting the liquid and air in the processing bag main body 10 by a sensor and opening the degassing valve 20b. When the degassing is completed, the degassing valve 20b is closed.

FIG. 4 is a diagram illustrating a method for treating a liquid to be treated by the water treatment apparatus according to the first embodiment.

Further, as shown in FIG. 4, the water treatment device T1 preferably includes a water filling storage tank 3 for supplying the water filling 300 into the water tank 2. The flood storage tank 3 is juxtaposed in the water tank 2. In this case, an overflow port 21 is provided on the upper side surface of the water tank 2 corresponding to the position of the water surface WL of the flooded water 300. The inside of the flood storage tank 3 is connected to the overflow port 21 of the water tank 2 by the overflow pipe 21A.

The flooded storage tank 3 is provided with a supply pump 31. The supply pump 31 supplies the internal filled water to the outer space 2a of the water tank 2 by the filled water supply pipe 32. The flooded water supply pipe 32 has an on-off valve 33. The drive of the supply pump 31 is controlled by a control means (not shown).

Next, a method of treating the liquid to be treated by using this water treatment device T1 will be described with reference to FIGS. 4 to 7.
4 to 7 are diagrams illustrating a method of treating the liquid to be treated by the water treatment apparatus according to the first embodiment.

First, as shown in FIG. 4, the supply valve 15A is opened, the discharge valve 15B is closed, and the liquid to be processed 200 is placed in the processing bag main body 10 through the supply pipe 14A and the supply / discharge pipe 14 (see FIG. 1). And fill the inside with the liquid to be treated. The inside of the water tank 2 is filled with flooded water 300. Since the treatment bag 1 is immersed in the flooded water 300, there is no concern that the balance will be lost even if the inside of the treatment bag main body 10 is filled with the liquid to be treated.

In order to prevent the processing bag body 10 from bursting when the liquid to be processed is injected into the processing bag body 10, the detection means for detecting that the inside of the processing bag body 10 is full is the processing bag body 10. The full state of the liquid is detected, and the supply valve 15A is closed and controlled by the control means. Further, instead of such a detection means, a detection sensor is provided on the inner surface of the water tank 2 or the like to contact and detect when the processing bag main body 10 is inflated and becomes full, and the detection signal of the detection sensor is used. Based on this, the control means may control the supply valve 15A to close.

After the inside of the treatment bag main body 10 is filled with the treatment target liquid, the coagulant is mixed in the treatment target liquid, and the treatment bag main body 10 and the shape holding frame 13 are rotated to rotate the stirring plate 13a to obtain the coagulant. The solution to be treated is reacted with the coagulation stirring treatment for a predetermined time. The coagulant may be mixed through the supply pipe 14A, or the hollow shaft 11 may be provided with an opening with a lid for charging the coagulant, and the lid may be opened only when the coagulant is charged.

After the coagulation stirring treatment, as shown in FIG. 5, the processing bag main body 10 and the shape holding frame 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 11c (see FIG. 1) extends upward from the hollow shaft 11. In this stationary state, the sludge 201 in the treatment bag main body 10 settles and is separated from the supernatant treated water 202.

After the sedimentation separation, as shown in FIG. 6, 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 treatment bag main body 10 is discharged from the discharge pipe 14B to the outside. To discharge. As a result, the processing bag body 10 gradually contracts and shrinks.

The treated water 202 flows from the discharge pipe 14B through the treatment liquid outflow pipe 14C into the outer space 2a in the water tank 2, and becomes a new water filling 300. That is, the water in the water tank 2 is reduced by discharging the treated water 202 in the treatment bag main body 10, but the discharged treated water 202 is returned to the water tank 2 as it is and into the outer space 2a in the water tank 2. Since it has only moved, the water level of the flooded water 300 in the water tank 2 is always kept constant, and the weight balance of the water tank 2 itself does not change.

Further, since the discharge pump 18 only needs to move the treated water 202 from the supply / discharge pipe 14 below the water surface WL of the filled water 300 to the outer space 2a of the water tank 2, a powerful pump is not required and the cost is significantly reduced. can.

When the treated water 202 is discharged, the turbidity sensor 17 monitors the turbidity of the liquid flowing in the discharge pipe 14B. By the time the treated water 202 in the treatment bag main body 10 has been discharged, sludge 201 is mixed in and the turbidity changes. At this time, as shown in FIG. 7, the on-off valve 15C to the treatment liquid outflow pipe 14C is closed, the on-off valve 16 to the sludge discharge pipe 14D is opened by the control means, and the sludge 201 settled from the sludge discharge pipe 14D is externally displayed. Discharge to. Therefore, only the clear treated water 202 can be stored as the filled water 300 in the outer space 2a in the water tank 2. Further, 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 it is not necessary to separately provide an opening for sludge discharge in the treatment bag main body 10. ..

At this time, in order to make up for the shortage of the flooded water 300 for discharging the sludge 201, the flooded water 300 is replenished from the flooded water storage tank 3 into the water tank 2 via the flooded water supply pipe 32. As a result, the water level in the water tank 2 is kept constant.

In order to process the next liquid to be processed, as shown in FIG. 4, when the supply valve 15A is opened again and the liquid 200 to be processed is supplied into the processing bag main body 10, the processing bag main body 10 which has been in a contracted state until then is supplied. Gradually expands. At this time, the filled water 300 in the water tank 2 due to the increased amount of the liquid to be treated 200 flows out from the overflow port 21 through the overflow pipe 21A to the filled water storage tank 3 side. The surplus flooded water 300 in the flooded water storage tank 3 is supplied from the flooded water discharge port 34 to an externally provided treated water tank or the like (not shown).

When supplying the liquid to be treated, if a small amount of sludge 201 that has settled during the previous treatment is left in the treatment bag main body 10, the amount of the coagulant input can be reduced, and the running cost can be reduced. It is preferable because it can be reduced.

The water treatment device T1 can form a treatment chamber for treating the liquid to be treated only by immersing the treatment bag 1 in the water tank 2. Therefore, it is not necessary to construct a partition wall in the water tank 2 with a flexible sheet or the like in order to form the treatment chamber. Therefore, the water tank 2 can use a simple container, and a water treatment device having a simple structure and inexpensive can be constructed.

Moreover, since it is not necessary to provide a pump for keeping the water level in the water tank 2 constant, the structure can be simplified and the cost can be reduced accordingly.

Further, since the processing bag main body 10 to be processed is immersed in the water filling 300 in the water tank 2, stress is concentrated during expansion and contraction like a partition wall made of a conventional flexible sheet. It does not have a portion fixed to the inner wall of the water tank 2, and when it expands or contracts, the entire processing bag body 10 can expand or contract irregularly and freely. Moreover, since the water pressure of the water filling 300 is applied to the entire processing bag body 10 and wear, wear, refraction, and bending are prevented from being concentrated on a specific part of the processing bag body 10, the durability of the processing bag body 10 is improved. It is further improved, the life is extended, and an economical effect can be obtained.

Further, since the processing bag main body 10 for processing is formed in a bag shape such as a cylindrical shape and a horizontally long shape, it has an effect of speeding up sedimentation separation as compared with a vertically long cylindrical bag. To prove this, an experimental example is given below.

<Experimental example>
The present inventor has obtained patents as Patents No. 5498942 and No. 5705296 for a processing bag and a processing apparatus using a cylindrical bag in a vertically elongated shape. The present inventor has a clear difference between the completion time of the sedimentation separation of the patented technology and the completion time of the sedimentation separation of the cylindrical horizontal processing bag in which the cylindrical bag of the present invention is made horizontally long with the same amount of water (volume). I found that there was.

Based on the discovery of this fact, a laboratory experiment was conducted to (a) compare the progress rate in sedimentation separation, and (b) confirm whether there is a difference in the clarity of the supernatant after sedimentation. rice field.
In other words, in this laboratory experiment, the processing speed of sedimentation separation and the results of the treatment were visually measured in the "tank in the vertical position" and the "tank in the horizontal position" of the cylindrical processing tank for sedimentation separation. This is an experiment by a laboratory that compares and verifies the two.

(Experimental method and results)
We prepared two 1-liter beakers, which correspond to a simple cylindrical tank with no protrusions inside.
The raw water for the experiment was prepared by adding the following agents (a), (b), (c), and (d) under the same conditions required for sedimentation separation and stirring them uniformly.
(A) Add 300 ppm of commercially available PAC (polyaluminum chloride) 10% solution.
(B) Commercially available 10% NaOH solution is added for adjustment so that the pH becomes 7.0.
(C) Add 2 g of powdered activated carbon for water treatment with a water content of 50% from Osaka Gas Co., Ltd.
(D) Add 2 ppm of Mitsubishi Chemical's anionic polymer flocculant 1000-fold diluted solution. Fill two beakers with the raw water prepared above evenly until it is almost full, and place it vertically in an open-air 1-liter beaker and horizontally. The beaker to be placed in was processed with a lid on the top so that there was no water leakage, and both were prepared with this experimental set in a state where the inside could be clearly seen.

The beaker open to the atmosphere was placed vertically, and the closed beaker was stopped by stirring horizontally for 1 minute while laying it horizontally on both sides at the same time.
From the stop of stirring to the completion of sedimentation separation were observed by multiple people at the same time.
As a result, it was found that the settling completion time of both sides was clearly faster when laid on their 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 clarity sludge between the two, and there was no problem with the sedimentation separation effect.
The conclusion was that the horizontal beaker was able to settle and separate approximately 5 times faster than the vertical beaker.
From the above experimental examples, the cylindrical horizontal processing bag of the present invention has an effect that the processing time can be significantly shortened as compared with the processing bag in which the cylindrical bag is vertically elongated.

FIG. 8 is a schematic configuration diagram showing a second embodiment of the water treatment apparatus. Since the same reference numerals as those in FIGS. 1 to 7 indicate the same configuration, the description thereof will be omitted.

In this water treatment device T2, the treated water discharge pipe 14E is branched downward at the end of the discharge pipe 14B as in the sludge discharge pipe 14D. From the treated water discharge pipe 14E, the treated water 202 is discharged to the outside without returning to the inside of the water tank 2.

In this water treatment device T2, since the outlets of the treated water 202 and the sludge 201 from the sludge discharge pipe 14D and the treated water discharge pipe 14E are below the water surface WL of the flooded water 300 in the water tank 2, the treated water 202 and The sludge 201 can be easily discharged by the siphon effect. Therefore, in this water treatment device T2, the discharge pump 18 is not indispensable.

In this water treatment device T2, the treated water 202 in the treatment bag main body 10 is not returned to the water tank 2, so that the water level of the water filling 300 in the water tank 2 is kept constant at the time of discharging the treated water 202. By driving the supply pump 31 from the water storage tank 3, the water filling 300 is replenished into the water tank 2 via the filling water supply pipe 32. The amount of water in the filled water 300 in the water tank 2 is detected by a liquid level gauge (not shown), and the control means controls the drive of the supply pump 31 and the opening and closing of the on-off valve 33 provided in the filled water supply pipe 32. It has become. Therefore, the water level of the flooded water 300 in the water tank 2 is always kept constant.

In the water treatment apparatus T2, the liquid to be treated 200 can be used as the water filling 300. That is, the treatment target liquid 200 can be supplied to the water tank 2 so that the entire treatment bag main body 10 is always immersed, and the treatment target liquid 200 can be supplied to the supply pipe 14A by a pump (not shown).

In the water treatment devices T1 to T2 described above, by immersing the end of the water filling pipe 32 in the water filling 300 in the water tank 2, the water filling tank 3 to the water tank 2 is filled with water 300. The replenishment can be caused to flow naturally by the siphon effect. In this case, it is not necessary to provide the supply pump 31 for supplying the water to the water tank 2, and the water supply pipe 32 is provided to stop the supply of the water from the water storage tank 3 to the water tank 2. Since it can be performed only by controlling the closing of the on-off valve 33, the equipment cost can be reduced accordingly.

Further, in the water treatment devices T1 to T2, as the filling water 300, liquids other than the treated water 202 and the treatment target liquid 200, for example, tap water, seawater, river water, lake water and the like can be used. The shortage of the filled water 300 in the filled water storage tank 3 may be replenished with tap water or the like by using the timing of the treatment in the treatment bag 1 in the water tank 2 (at rest). Since the amount of water at this time may be smaller than the unit amount of water of the discharge pump 18, it is not necessary to use a large pump. Therefore, the cost can be kept low even if a pump is used.

The water treatment devices T1 to T2 described above used the treatment bag 1 shown in FIG. 2, but the treatment bag main body 10 is impermeable, flexible, and can be formed in a hermetically sealed state. Well, it is not limited to the processing bag main body 10 shown in FIG. Further, the processing bag main body 10 is not limited to the one fixed to the hollow shaft 11, and may be fixed to the inner wall of the water tank 2.

Further, as described above, the treatment apparatus according to the present invention is not limited to the water treatment apparatus that separates the treated water and sludge by coagulating and stirring the water, and is also immersed in the flooded water 300 in the water tank 2. It can be widely applied to applications in which various treatment target liquids are treated using the treated treatment bag 1 and the treated liquid is discharged.

In the treatment apparatus according to the present invention, since the entire treatment bag 1 is immersed in the water filling 300 in the water tank 2, the inside of the treatment bag 1 is heated and cooled by heating or cooling the water filling 300 to an appropriate temperature. Alternatively, it can be kept warm. For example, when the reaction treatment is performed in the treatment bag 1, the water filling 300 in the outer space 2a of the water tank 2 is heated or cooled to a temperature required for the reaction, so that the reaction treatment is performed in an optimum temperature atmosphere. Can be done.

Since the water filling 300 in the water tank 2 covers the entire treatment bag 1, it is possible to efficiently heat, cool or heat-retain under the optimum conditions without being affected by the environmental temperature outside the water tank 2. In this case, it is needless to say that a heating or cooling means for heating or cooling the flooded water 300 is provided in the flooded water storage tank 3 or at another appropriate place. Further, by providing a circulation means for allowing the filled water 300 to circulate between the inside of the water tank 2 and the inside of the filled water storage tank 3, the inside of the treatment bag in the water tank 2 is kept at a constant temperature for a long period of time. It is also preferable to be able to maintain the temperature.

As the processing bag according to the present invention, the processing bag 1 shown in FIG. 2 can be used alone. For example, the hollow shaft 11 to which the shape-retaining frame 13 is attached is placed horizontally in water stored in a water tank such as concrete, a pool, a container, or the like so that the hollow shaft 11 is lower than the water surface, and then immersed in the water surface. It can be used by hanging it on an erected support. The columns may be floated on the water by a floating bag (not shown) or the like, or both ends may be fixed to a structure on the water, land, or the like and installed on the surface of the water.

Further, the processing bag according to the present invention may be immersed in a flooded water in which the water level is always maintained, and does not have the shape-retaining frame 13 and the hollow shaft 11 of the processing bag 1 shown in FIG. There may be.

In addition to discharging the liquid in the processing bag by a pump, the processing is performed by applying a compressive force to the processing bag body 10 from the outside by an appropriate means by utilizing the flexibility of the processing bag body 10. It is also possible to discharge the liquid inside by utilizing the force when the bag body 10 contracts.

1: Treatment bag 10: Treatment bag body 10b: Inner space 11: Hollow shaft 12: Supply / discharge port 12a: Swivel joint 12b: Rotary joint 13: Shape retention frame 13a: Stirring plate 14A: Supply pipe 14B: Discharge pipe 15A: Supply Valve 15B: Discharge valve 19: Motor 20: Degassing pipe 20a: Degassing port 20b: Degassing valve 2, 2A-2C: Water tank 2a: Outer space 3: Filled water storage tank 200: Liquid to be treated 202: Treated water 300: Flooded water T1 to T2: Water treatment device WL: Flooded water surface

Claims (7)

A horizontally long processing bag body that is hermetically formed by a water-impermeable and flexible sheet and is immersed in a water tank that stores water that keeps the water level at all times.
A hollow shaft that is arranged inside the processing bag body and serves as a supply / discharge path for the processing target liquid that is supplied to the inside of the processing bag body and the processing liquid that is discharged to the outside from the processing bag body.
It is supported by the hollow shaft and is arranged inside the processing bag main body, and is provided with a shape holding frame that can be stirred and rotated.
The processing bag body has a horizontal cylindrical shape when it is full.
Further, the treatment apparatus is characterized in that the inside of the water tank is divided into an inner space of the treatment bag main body and an outer space in which the flooded water is stored. The processing apparatus according to claim 1, further comprising a water filling means for supplying the filling water corresponding to the amount of liquid reduction when the treatment liquid is discharged from the inside of the treatment bag main body into the water tank. The treatment apparatus according to claim 1 or 2, wherein the water tank has an overflow port for discharging a filled water corresponding to an increase in the amount of liquid when the liquid to be treated is supplied into the main body of the treatment bag. The treatment apparatus according to any one of claims 1 to 3, wherein a treatment liquid outflow pipe and a sludge outflow pipe for discharging the treatment liquid in the treatment bag main body are connected to one end of the hollow shaft. .. A processing bag body that is formed in a sealed shape by a water-impermeable and flexible sheet and has a cylindrical shape when it is full.
A hollow shaft that is arranged inside the processing bag body and serves as a supply / discharge path for the processing target liquid that is supplied to the inside of the processing bag body and the processing liquid that is discharged to the outside from the processing bag body.
Supported by the hollow shaft and arranged inside the processing bag body, it has four stirring plates and a shape-retaining frame that can be rotated.
A treatment bag that is used by immersing it horizontally in a flooded water that keeps the water level at all times. The processing bag according to claim 5, wherein both ends of the hollow shaft project to the outside of the processing bag body, and one end thereof serves as a supply / discharge port. The processing bag according to claim 6, further comprising a detection means for detecting that the inside of the processing bag body is full.

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