Processing Equipment

Abstract

To provide a treatment device applicable to various types of treatment such as water treatment, reaction, mixing, heating, and heat retention, and capable of not only significantly reducing an installation area but also performing rapid treatment.SOLUTION: A water treatment device includes a treatment tank body 10 of a horizontal cylindrical shape formed of a hard material that can maintain a fixed shape and is not deteriorated by chemicals. The water treatment device further includes: a supply pipe 14A for supplying a treatment target liquid to the inside of the treatment tank body; a stirring plate 13A for adding a coagulant in the treatment tank body and agitating it; and a discharge pipe 14B for discharging supernatant water separated by stopping the agitation so as to be in a static state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a treatment device, and more particularly to a treatment device that can be applied to various treatments such as water treatment, reaction, mixing, heating, and heat retention, and that can not only significantly reduce the installation area but also perform rapid treatment. [Background technology]

[0002] Conventionally, in order to carry out various types of treatment such as water treatment, it has been necessary to install large-scale treatment facilities and related facilities, which requires a vast amount of land for the facilities.

[0003] The present inventors have previously proposed a groundbreaking technology for a water treatment device that can significantly reduce the installation area (Patent Document 1).

[0004] Patent Document 1 discloses a technology in which a water tank is divided into two chambers, an upper one and an lower one, 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 allow the water to be treated to be taken in and out of the upper chamber.

[0005] Although this technology is a breakthrough, there remains a problem to be solved in terms of further improving the durability of movable members such as partition walls.

[0006] Although Patent Document 2 discloses a flexible disposal bag, it does not disclose how to use the disposal bag. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 3492300 [Patent Document 2] Patent No. 2625590 Summary of the Invention [Problem to be solved by the invention]

[0008] 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, and heat retention, and that can not only significantly reduce the installation area but also perform rapid treatment.

[0009] Other objects of the present invention will become apparent from the following description. [Means for solving the problem]

[0010] The above problems are solved by the following inventions.

[0011] The invention described in claim 1 is The tank body is made of a hard material that can maintain a fixed shape and is not deteriorated by chemicals. The tank body is in a horizontally elongated cylindrical shape. The tank is provided with a supply pipe for supplying the liquid to be treated into the inside of the treatment tank body, and a discharge pipe for removing the treated liquid obtained by flocculating and stirring the liquid in the treatment tank body and separating the sludge and the treated liquid through sedimentation. The water treatment device is characterized in that The invention described in claim 2 is as follows: 2. The treatment apparatus according to claim 1, further comprising a detection means for detecting when the treatment tank body is filled with liquid. Effect of the Invention

[0012] 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 retention, and that can not only significantly reduce the installation area but also perform rapid treatment. [Brief description of the drawings]

[0013] [Figure 1] 1 is a schematic diagram showing an embodiment of a processing apparatus; [Figure 2A] FIG. 1 is a schematic perspective view showing a stirring unit. [Figure 2B] FIG. 13 is a schematic perspective view showing another example of the stirring unit. [Figure 2C] FIG. 13 is a schematic perspective view showing still another example of the stirring unit. [Diagram 3]FIG. 1 is a diagram for explaining a method for treating a liquid to be treated by a treatment apparatus according to an embodiment; [Figure 4] FIG. 1 is a diagram for explaining a method for treating a liquid to be treated by a treatment apparatus according to an embodiment; [Diagram 5] FIG. 1 is a diagram for explaining a method for treating a liquid to be treated by a treatment apparatus according to an embodiment; [Figure 6] FIG. 1 is a diagram for explaining a method for treating a liquid to be treated by a treatment apparatus according to an embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] Fig. 1 is a schematic diagram showing an embodiment of a processing apparatus, in which the hollow shaft 11 is in a position where the supply and discharge nozzle 11c extends vertically downward.

[0016] As shown in Fig. 1, the treatment apparatus T1 is configured to have a treatment tank 1. The treatment tank 1 is a container for treating various liquids inside a treatment tank body 10. Here, treatment in the present invention refers to at least one of mixing, stirring, coagulation, reaction, heating, cooling, and warming of the liquid.

[0017] The treatment tank 1 shown in this embodiment is an example of a treatment tank 1 with an agitation function that can be suitably used for water treatment in which the liquid to be treated is coagulated and agitated using a coagulant, and then sedimented and separated to extract clear treated water.

[0018] The treatment tank 1 is configured to have a hollow shaft 11 and an agitator 13 inside a treatment tank body 10.

[0019] The processing tank body 10 is characterized by being formed from a hard material into a horizontally elongated shape. Here, the horizontally elongated shape refers to a shape that is horizontally elongated (the horizontal direction (internal width) is wider than the vertical direction (depth)) when viewed from any horizontal direction, but is not vertically elongated (the horizontal direction (internal width) is narrower than the vertical direction (depth)) when viewed from any horizontal direction.

[0020] Therefore, the horizontally elongated shape includes a point-symmetric shape with no directionality such as a square or a circle when viewed from above, since if the depth is shallower than the inner diameter, it is horizontally elongated when viewed from any horizontal direction, but not vertically elongated when viewed from any horizontal direction. Since the inner diameter of a cylinder with its axis horizontal is the depth, if the inside length in the longitudinal direction of the cylinder is longer than the inner diameter of the cylinder, it is horizontally elongated when viewed from any horizontal direction (direction perpendicular to the axis of the cylinder), but not vertically elongated when viewed from any horizontal direction, and is included in the horizontally elongated shape. When the processing tank body 10 is cylindrical, it is preferable that the inside length in the longitudinal direction of the cylinder is about 1.2 to 2.5 times the inner diameter of the cylinder.

[0021] As will be described later, the present inventors have confirmed that the settling speed of flocs is significantly increased in a horizontally shaped treatment tank compared to a vertical treatment tank, and the depth of flocs becomes shallower in a horizontal treatment tank.

[0022] The processing tank body 10 is configured in a horizontally elongated cylindrical shape with its axis horizontal, with both end faces of the cylinder closed and the top open. The processing tank body 10 is fixed to the floor surface by legs 10c attached to the lower part of the outer wall surface. The shape of the legs 10c is not limited in any way, and may be something like a case that covers the entire processing tank body 10.

[0023] As the hard material, for example, polyethylene, FRP, metal, concrete, etc. The material of the treatment tank body 10 is not particularly limited as long as it can maintain a fixed shape and is not deteriorated by chemicals, etc.

[0024] 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 circle, a square, or a polygon such as a hexagon. The hollow shaft 11 is arranged horizontally on the central axis of the treatment tank body 10. Both end portions of the hollow shaft 11 penetrate the centers of both end face portions 10a, 10d of the treatment tank body 10 and face outward. The hollow shaft 11 can be rotated around its axis.

[0025] An agitator 13 supported by a hollow shaft 11 is provided inside the treatment tank body 10. The agitator 13 is rotated by the rotation of the hollow shaft 11.

[0026] FIG. 2A is a schematic perspective view showing the stirring unit. The stirring section 13 is made of a rigid plate material such as a polycarbonate plate, a stainless steel plate, or an FRP plate. As shown in FIG. 1 and FIG. 2A, the stirring section 13 is formed in a frame shape extending from the vicinity of one end surface portion 10a to the vicinity of the other end surface portion 10d of the treatment tank main body 10. The stirring section 13 is formed of a pair of substantially rectangular side plates 13b, 13c fixed to both end portions of the hollow shaft 11, and a pair of beam plates 13d, 13e connecting both ends of the side plates 13b, 13c to form a frame shape. The pair of side plates 13b, 13c penetrate 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, 13e are wider than the side plates 13b, 13c.

[0027] A total of four stirring plates 13a are provided on the pair of beam plates 13d, 13e of the stirring section 13. Each stirring plate 13a is a flat plate-shaped member, and is erected from both side edges of each beam plate 13d, 13e toward the central axis of the treatment tank body 10, i.e., toward the hollow shaft 11. Each stirring plate 13a has a length extending between the pair of side plates 13b, 13c, i.e., a length approximately equal to the pair of beam plates 13d, 13e. Each stirring plate 13a has a width reaching approximately the middle position between each beam plate 13d, 13e and the hollow shaft 11. Each stirring plate 13a may be formed integrally with each beam plate 13d, 13e by bending processing, or may be formed separately from each beam plate 13d, 13e and attached to each beam plate 13d, 13e.

[0028] FIG. 2B is a schematic perspective view showing another example of the stirring unit. As shown in Fig. 2B, the stirring unit 13 may be a structure in which multiple fin-shaped stirring plates 13f are directly attached to the outer circumferential surface of the hollow shaft 11. In this case, the stirring plates 13f may be flat or twisted curved plates. When the twists of the stirring plates 13f are aligned in a certain direction, the multiple stirring plates 13f form a fan that generates a certain flow of the fluid.

[0029] FIG. 2C is a schematic perspective view showing still another example of the stirring unit. Each stirring plate 13a on the outer periphery of the stirring section 13 may be made of a plurality of fin-shaped pieces as shown in Fig. 2C. In this case, the plurality of fin pieces constituting each stirring plate 13a may be flat or twisted curved. 2C, the stirring unit 13 may be a combination of the stirring plates 13a on the outer periphery and a plurality of stirring plates 13f attached to the outer periphery of the hollow shaft 11. In this case, the stirring plates 13a on the outer periphery 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 unit 13 in the opposite direction to the hollow shaft 11, a reversing gear may be interposed between the hollow shaft 11 and the side plates 13b and 13c.

[0030] One end of the hollow shaft 11 is a liquid supply and discharge port 12 as shown in FIG. 1. The supply and discharge port 12 is for supplying the liquid to be treated into the inside of the treatment tank body 10 and discharging the liquid to be treated from the inside of the treatment tank body 10. One end of the hollow shaft 11 is rotatably supported on the outer wall of the treatment tank body 10 via a swivel joint 12a while penetrating one end surface portion 10a of the treatment tank body 10. One end of the hollow shaft 11 is rotatably connected to a supply and discharge pipe 14 installed outside the treatment tank body 10. The supply and discharge pipe 14 is for supplying the liquid to be treated into the inside of the treatment tank body 10 and discharging the liquid to be treated from the inside of the treatment tank body 10. The hollow shaft 11 is capable of supplying and discharging the liquid between the supply and discharge pipe 14 while being rotatable about its axis relative to the supply and discharge pipe 14.

[0031] A motor 19 serving as a rotation operation means is installed at the other end side of the hollow shaft 11 on the other end surface 10d of the processing tank main body 10. The drive shaft of the motor 19 is rotatable by penetrating the outer wall part of the other end surface 10d of the processing tank main body 10 via a rotary seal 12c, and is connected to the other end side of the hollow shaft 11 by a joint 12b. This motor 19 rotates the hollow shaft 11 about its axis, and the rotation of the hollow shaft 11 rotates the agitator 13. The joint 12b may be an expansion joint to absorb thermal expansion and contraction of the hollow shaft 11.

[0032] The rotation means for rotating the hollow shaft 11 around its axis need not be a motor 19, but may be any of a variety of other rotational drive power sources (including combustion engines and natural forces such as water power and wind power), or may be driven by animals (such as cattle or horses) or manually (human power).

[0033] The hollow shaft 11 is closed near the center by a flange 11a. Within the hollow shaft 11, a supply and discharge passage 11b runs from the supply and discharge port 12 to the flange 11a. The supply and discharge passage 11b is a supply and discharge passage for the liquid to be treated and the treatment liquid. This supply and discharge passage 11b is connected to a supply and discharge nozzle 11c near the flange 11a. The supply and discharge nozzle 11c is set upright approximately perpendicular to the hollow shaft 11 and extends toward a beam plate 13e of the agitator 13 (see Figures 2A and 2C). The tip of the supply and discharge nozzle 11c is an outlet suction port 11d.

[0034] The liquid supplied from the supply and discharge pipe 14 passes through the supply and discharge path 11b and the supply and discharge nozzle 11c, and is discharged from the discharge suction port 11d into the processing tank body 10. The liquid in the processing tank body 10 is sucked through the discharge suction port 11d, and is discharged to the supply and discharge pipe 14 through the supply and discharge nozzle 11c and the supply and discharge path 11b.

[0035] In this processing device T1, the supply of the liquid to be treated into the inside of the processing tank body 10, the discharge of the processing liquid from within the processing tank body 10, and the stirring by the stirring section 13 within the processing tank body 10 can all be performed by the hollow shaft 11, so there is no need to separately provide a supply pipe, a discharge pipe, and a shaft for rotating the stirring section 13, and the configuration of the processing tank body 10 can be simplified.

[0036] The supply and 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 that is controlled to be opened and closed by a control means (not shown). The discharge pipe 14B can be opened and closed by a discharge valve 15B that is controlled to be opened and closed by a control means.

[0037] When the discharge valve 15B is open, the liquid in the treatment tank body 10 is discharged from the discharge pipe 14B by the discharge pump 18. The discharge pipe 14B is provided with a turbidity sensor 17 that measures the turbidity of the liquid flowing through the discharge pipe 14B.

[0038] The discharge pipe 14B passing through the turbidity sensor 17 and the discharge pump 18 is connected to the treated liquid outlet pipe 14C via an on-off valve 15C. Therefore, the inner space 10b of the treatment tank body 10 can discharge treated water to the outside of the treatment tank body 10 via the discharge pipe 14B and the treated liquid outlet pipe 14C. The discharge pipe 14B is also connected to the sludge discharge pipe 14D via an on-off valve 16. Therefore, the inner space 10b of the treatment tank body 10 can discharge sludge to the outside of the treatment tank body 10 via the discharge pipe 14B and the sludge discharge pipe 14D. The on-off valves 15C, 16 and the discharge pump 18 are all controlled by a control means (not shown). The detection 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.

[0039] In this treatment device T1, if the outlets of the treated water and sludge from the sludge discharge pipe 14D and the treated water discharge pipe 14C are located below the water level of the liquid in the treatment tank body 10, the treated water and sludge can be easily discharged by the siphon effect. In order to stabilize the discharge speed of the treated water and sludge, a discharge pump 18 is used, but they can also be easily discharged by the siphon effect. Therefore, the discharge pump 18 is not essential to this treatment device T1.

[0040] The treatment tank 1 preferably has a detection means for detecting when the treatment tank body 10 is filled with liquid. A water level sensor for detecting the water level in the treatment tank body 10 can be used as the detection means. When liquid is supplied into the treatment tank body 10, the water level in the treatment tank body 10 gradually rises. The water level sensor detects the water level in the treatment tank body 10 and sends it to the control means, and when the control means detects that the water level has reached a predetermined water level, it closes the supply valve 15A, thereby filling the treatment tank body 10 with water.

[0041] Next, a method for treating a liquid to be treated using this treatment device T1 will be described with reference to FIGS. 3 to 6 are diagrams illustrating a method for treating a liquid to be treated by the treatment device according to the embodiment.

[0042] First, as shown in Fig. 3, the processing tank body 10 and the agitator 13 are stopped to be in a stationary state. At this time, it is preferable that the hollow shaft 11 is stopped at a position where the supply and discharge nozzle 11c (see Fig. 1) extends vertically downward from the hollow shaft 11.

[0043] Next, the supply valve 15A is opened, the discharge valve 15B is closed, and the liquid to be treated 200 is supplied into the treatment tank body 10 through the supply pipe 14A and the supply and discharge pipe 14 (see FIG. 1) to fill the inside with the liquid to be treated.

[0044] When the liquid to be treated is injected into the treatment tank body 10, the detection means for detecting when the treatment tank body 10 is full of liquid detects the full liquid state of the treatment tank body 10, and the control means controls the supply valve 15A to be closed.

[0045] A flocculant is mixed into the liquid to be treated, and the liquid to be treated is filled into the treatment tank body 10. The agitator 13 is rotated to rotate the agitator plate 13a, causing the flocculant to react with the liquid to be treated, and a flocculation and agitation process is carried out for a predetermined time. The flocculant may be added from an open portion on the top surface of the treatment tank body 10, or may be mixed in through the supply pipe 14A, or an opening with a lid for adding the flocculant may be provided in the hollow shaft 11, and the lid may be opened only when the flocculant is to be added.

[0046] After the coagulation and stirring process, as shown in Fig. 4, the treatment tank body 10 and the stirring unit 13 are stopped and kept stationary. At this time, the hollow shaft 11 is stopped at a position where the supply and discharge nozzle 11c (see Fig. 1) extends vertically downward from the hollow shaft 11. Thereafter, the sludge 201 in the treatment tank body 10 settles and is separated from the supernatant treated water 202. At this time, the discharge and suction port 11d at the tip of the supply and 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 (i.e., it is located slightly above the interface between the sludge and the treated water).

[0047] After sedimentation and separation, as shown in Figure 5, the discharge valve 15B and the on-off valve 15C are opened, and the discharge pump 18 is driven to discharge the clear supernatant treated water 202 in the treatment tank body 10 from the discharge pipe 14B through the treated liquid outflow pipe 14C to the outside.

[0048] When the interface of the sludge 201 is below the discharge suction port 11d, the treated water 202 is sucked in and discharged from the treated liquid outlet pipe 14C to the outside. When the interface of the sludge 201 is above the discharge suction port 11d, the sludge 201 is sucked in and discharged to the discharge pipe 14B. When the treated water 202 and the sludge 201 are discharged, the turbidity sensor 17 monitors the turbidity of the liquid flowing in the discharge pipe 14B. When the sludge 201 is sucked in, the turbidity sensor 17 detects a change in turbidity. When this is detected, as shown in FIG. 6, the control means closes the on-off valve 15C to the treated liquid outlet 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 outlet pipe 14C. The settled sludge 201 is discharged from the sludge discharge pipe 14D to the outside. Since the sludge discharge pipe 14D branches off from the discharge pipe 14B, the sludge 201 can also be discharged from the supply and discharge port 12, eliminating the need to provide a separate opening for sludge discharge in the treatment tank body 10. Note that once the sludge 201 is discharged, the sludge interface level drops, so it will not be discharged for a certain period of time after the next batch.

[0049] In order to treat the next liquid to be treated, 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 treated 200 into the treatment tank body 10, as shown in FIG.

[0050] When the liquid to be treated 200 is supplied, sludge 201 that has settled during previous treatment may remain in the treatment tank body 10. This is preferable because it allows a reduction in the amount of flocculant to be added and reduces running costs.

[0051] In this treatment device T1, the treatment tank body 10 in which the treatment is performed is formed in a horizontally elongated shape, such as a cylindrical shape, so that effective flocculation can be achieved by the coagulation and settling of the sludge. The treatment tank body 10 has a structure in which the vertical direction is shortened in proportion to its volume, so that mixing between the residual recycled sludge in the tank that has once settled to the bottom and the newly supplied treated water is promoted in a short period of time, resulting in ideal flocculation.

[0052] Furthermore, in this treatment device T1, the coagulation speed can be increased (settling separation can be accelerated), and high clarity of the treated water can be ensured. The downward flow of sludge along the circular wall surface of the treatment tank body 10 as viewed from the side is the cause of the rapid settling phenomenon. Therefore, when the treatment tank body 10 is not cylindrical, it is preferable to provide a slope like a circular wall surface near the bottom of the treatment tank body 10.

[0053] Furthermore, in this treatment device T1, the treatment tank body 10 has a horizontally elongated shape with a low vertical to horizontal ratio, so that the water supply pressure can be reduced, thereby enabling power saving.

[0054] In addition, in this treatment device T1, the treatment tank body 10 has a shape that can be extended sideways even if the height is limited, so that the installation is easy and the volume (treatment capacity) can be expanded. In addition, the treatment tank body 10 can be installed on a floor, on the ground, underground, on water, underwater, etc., ensuring versatility.

[0055] As described above, in the processing apparatus T1, the processing tank body 10 in which the processing is performed is formed in a horizontally elongated shape, such as a cylindrical shape, and therefore has the effect of speeding up sedimentation and separation compared to a vertically elongated cylindrical shape. In order to prove this, an experimental example is given below.

[0056] <Experimental Example> The present inventor has obtained patents for a treatment tank and treatment device using vertically elongated cylindrical bags under Patent Nos. 5498942 and 5705296. The present inventor discovered that, with the same amount of water (volume), there is a clear difference in the time to complete sedimentation separation between the patented technology and the horizontally elongated cylindrical treatment tank of the present invention.

[0057] Based on this discovery, laboratory experiments were conducted to (a) compare the rates of sedimentation and separation, and (b) confirm whether there was any difference between the two in the clarity of the supernatant after sedimentation was complete. In other words, this laboratory experiment was a comparative verification test in which the processing speed and results of sedimentation separation were visually measured in a "tank placed vertically" and a "tank placed horizontally," using cylindrical sedimentation treatment tanks.

[0058] (Experimental Method and Results) Two 1-liter beakers were prepared, equivalent to simple cylindrical tanks with no internal protrusions. The raw water for the experiment was prepared by adding the following chemicals (a), (b), (c), and (d) necessary for sedimentation and separation, and stirring uniformly. (A) Commercially available PAC (polyaluminum chloride) 10% solution is added at 300 ppm (a) Commercially available 10% NaOH solution is added to adjust the pH to 7.0. (c) 2g of powdered activated carbon for water treatment with a moisture content of 50% from Osaka Gas Co., Ltd. was added. (d) Mitsubishi Chemical's anionic polymer flocculant diluted 1000 times is added at 2 ppm. The raw water prepared above was filled equally into two beakers until they were nearly full. The 1 liter beaker that was open to the atmosphere and placed vertically, and the beaker that was placed horizontally had lids on the top to prevent leakage, and both were prepared in such a way that the contents of the inside could be clearly seen, and the experimental set up was prepared.

[0059] The open beaker was placed vertically and the sealed beaker was placed horizontally. Both were simultaneously stirred for one minute to allow for settling and separation, and then the stirring was stopped. The period from when stirring was stopped until settling and separation were completed was observed by multiple people at the same time. As a result, it was found that the settling time for both beakers was clearly faster when the beaker was laid 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.

[0060] It was confirmed that there was no noticeable difference in the floc state of the clarified sludge between the two, and there was no problem with the settling and separation effect. The conclusion was that the horizontal beaker allowed sedimentation and separation to occur approximately five times faster than the vertical beaker. From the above experimental examples, it is evident that the cylindrical horizontal processing tank of the present invention can drastically shorten the processing time compared to a processing tank having a vertically elongated cylindrical shape.

[0061] As described above, the treatment device T1 of the present invention is not limited to a water treatment device that performs coagulation and stirring treatment of water to separate it into treated water and sludge, but can also be widely used for treating various types of liquid to be treated using the treatment tank 1 and discharging the treated liquid after treatment. [Explanation of symbols]

[0062] 1: Processing tank 10: Processing tank body 10b: Inner space 10c: Legs 11: Hollow shaft 12: Supply outlet 12a: Swivel joint 12b: Joint 12c: Rotary seal 13: Mixing section 13a: Stirring plate 14: Supply discharge pipe 14A: Supply pipe 14B: Discharge pipe 15A: Supply valve 15B: Exhaust valve 19:Motor 200: Liquid to be treated 201: Sludge 202: Treated water T1: Water treatment equipment

Claims

1. Equipped with a horizontally long cylindrical treatment tank body (excluding tanks integrated with vehicles and batch aeration tanks), A supply pipe is provided for supplying raw water containing suspended solids (SS) into the inside of the treatment tank body, A flocculant is added to the raw water in the treatment tank body to flocculate suspended solids (SS) to form flocculated flocs; A batch-type water treatment device, characterized in that the flocculated flocs are separated by gravity settling using the cylindrical wall surface on the inner surface of the treatment tank body, thereby obtaining clear supernatant treated water.

2. 2. A batch-type water treatment apparatus according to claim 1, wherein the treatment tank body having a horizontally elongated cylindrical shape is made of a hard material that can maintain a fixed shape and is not deteriorated by chemicals.

3. Raw water containing suspended solids (SS) is supplied to the inside of the treatment tank body (excluding tanks integrated with vehicles and batch aeration tanks) that has a horizontally long cylindrical shape, A flocculant is added to the raw water to flocculate suspended solids (SS) to form flocs; A batch-type water treatment method, characterized in that the flocculated flocs are separated by gravity settling using the cylindrical wall surface on the inner surface of the treatment tank body to obtain clear supernatant treated water.

4. 4. A batch-type water treatment method according to claim 3, wherein the treatment tank body having a horizontally elongated cylindrical shape is made of a hard material that can maintain a fixed shape and is not deteriorated by chemicals.

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