JP7582857B2 - Water treatment equipment - Google Patents

Description

One embodiment of the present invention relates to a water treatment device.

Conventionally, water treatment devices are known that remove dissolved substances contained in wastewater by contacting the wastewater with an adsorbent. Such water treatment devices have an adsorption treatment tank equipped with an adsorbent such as ion exchange resin, activated carbon, or zeolite, and can remove dissolved substances from the wastewater by adsorbing the dissolved substances with the adsorbent. The adsorbent's adsorption capacity decreases after adsorbing a certain amount of dissolved substances. Therefore, water treatment devices are operated while appropriately replacing the adsorbent depending on the concentration of dissolved substances contained in the treated water (treated wastewater) and the duration of use.

The upstream adsorbent, to which raw water (wastewater before treatment) is supplied, can adsorb many dissolved substances even if its adsorption performance has deteriorated, because the raw water contains a high concentration of dissolved substances. In contrast, the downstream adsorbent needs a high processing capacity because it needs to recover dissolved substances from wastewater with a low concentration of dissolved substances. Therefore, the downstream adsorbent may be replaced with a new adsorbent and the downstream adsorbent may be reused as the upstream adsorbent. Such water treatment equipment is equipped with multiple adsorption treatment tanks for continuous water treatment and is operated in a multi-stage adsorption system (for example, Patent Document 1 and Patent Document 2). The multi-stage adsorption system is a system in which the adsorption treatment tanks to be used are switched in order and the adsorbents in some adsorption treatment tanks that have been put into a suspended state are replaced.

Japanese Patent Application Publication No. 7-60241 Japanese Unexamined Patent Publication No. 3-137905

The above-mentioned multi-stage adsorption method requires the installation of multiple adsorption treatment tanks filled with adsorbent, which increases the footprint of the water treatment device. In addition, the multi-stage adsorption method employs a method of sequentially changing the water flow to put some of the adsorption treatment tanks into a dormant state. Therefore, the conventional multi-stage adsorption method had the disadvantage of requiring an increased number of valves and making operation more complicated.

One of the objectives of one embodiment of the present invention is to provide a water treatment device that is easy to operate and has excellent maintainability.

The water treatment device according to one embodiment of the present invention includes a water treatment tank to which treated water to be purified is supplied, and a plurality of carrier-filled tanks arranged inside the water treatment tank so as to be movable forward.

The carrier-filled tank may be detachable from the water treatment tank.

The water treatment device may further include a plurality of movable members attached to the inner wall surfaces in the left-right direction of the water treatment tank. The plurality of movable members may be plate-shaped elastic members having one end fixed to the inner wall surface. The movable members may be plate-shaped members having one end rotatably fixed to the inner wall surface. During operation, the other end of the movable member may be located between two adjacent carrier-filled tanks.

The carrier packed tank may have an inlet for water to be treated at the top and an outlet for water to be treated at the bottom. The multiple carrier packed tanks may be arranged such that the outlet for water to be treated in a carrier packed tank in a front stage and the inlet for water to be treated in a carrier packed tank in a rear stage adjacent to the carrier packed tank in the front stage are arranged close to each other.

The carrier-filled tank may have an elastic member on at least one of the front and rear outer wall surfaces.

The water treatment tank may have a stopper member that stops the forward movement of the forwardmost carrier-filled tank at a position spaced from the front inner wall surface of the water treatment tank.

The water treatment device may further include a transport device for moving the multiple carrier-filled tanks.

The carrier-filled tank may have holes in the bottom or side walls.

The carrier-packed tank may have a double-walled side wall.

The carrier-filled tank may have a rotating member on its outer wall for movement. The water treatment tank may have a rail portion for guiding the rotating member. The rail portion may include a first rail portion extending in the longitudinal direction of the water treatment tank and a second rail portion extending in a direction intersecting the longitudinal direction.

The transfer device may include an expandable member that is disposed inside the rear of the water treatment tank and expands and contracts in the front-to-rear direction of the water treatment tank.

1 is a diagram showing a schematic configuration of a water purification system according to one embodiment of the present invention. 1 is a plan view showing a configuration of a water treatment device according to an embodiment of the present invention. FIG. 2 is a plan view for explaining an operating state of the water treatment device according to one embodiment of the present invention. 2 is a diagram showing a configuration of a movable member in the water treatment device according to one embodiment of the present invention; FIG. 5A to 5C are diagrams for explaining the operation of the water treatment device when replacing the adsorbent according to one embodiment of the present invention. 5A to 5C are diagrams for explaining the operation of the water treatment device when replacing the adsorbent according to one embodiment of the present invention. 1 is a diagram showing a configuration of a water treatment device according to an embodiment of the present invention; 3 is an enlarged view of the vicinity of a connection portion between a support member and a carrier packed tank in one embodiment of the water treatment device according to the present invention. FIG. 13 is an enlarged view of the vicinity of a connection portion between a support member and a carrier packed tank in a water treatment device according to a modified example of one embodiment of the present invention. FIG. FIG. 2 is a diagram showing a configuration of a carrier packed tank in the water treatment device according to one embodiment of the present invention. FIG. 2 is a diagram showing a configuration of a carrier packed tank in the water treatment device according to one embodiment of the present invention. 1 is a side cross-sectional view showing a configuration of a water treatment device according to one embodiment of the present invention. 4 is a diagram showing a configuration of a shielding member in the water treatment device according to one embodiment of the present invention. FIG. 1 is a diagram showing a configuration of a water treatment device according to an embodiment of the present invention; FIG. 2 is a diagram showing a configuration of a carrier packed tank in the water treatment device according to one embodiment of the present invention. 1 is a diagram showing a configuration of a water treatment device according to an embodiment of the present invention; 1 is a diagram showing a configuration of a water treatment device according to an embodiment of the present invention;

The following describes an embodiment of the present invention with reference to the drawings. However, the present invention can be implemented in various forms without departing from the spirit of the invention, and should not be interpreted as being limited to the description of the embodiments exemplified below. In the drawings, the width, thickness, shape, etc. of each part may be shown diagrammatically compared to the actual form in order to make the explanation clearer, but these are merely examples and do not limit the interpretation of the present invention. In this specification and each drawing, elements having the same functions as those explained in the previous drawings may be given the same reference numerals, and duplicate explanations may be omitted.

In this specification, the direction in which gravity acts is referred to as "down" and the opposite direction as "up." Additionally, in a water treatment device, the side into which the water to be treated flows is referred to as the "front," and the side from which the water to be treated flows out is referred to as the "rear." Thus, the upstream side of the water to be treated is sometimes called the "front," and the downstream side is sometimes called the "rear." "Left" and "right" are defined based on the view of the water treatment device as seen from the rear to the front.

First Embodiment
[Water purification system configuration]
FIG. 1 is a diagram showing a schematic configuration of a water purification system 1000 according to an embodiment of the present invention. The water purification system 1000 according to this embodiment includes a water treatment device 100, a raw water tank 200, and a water pump 300. The raw water tank 200 is a tank for storing raw water 210 to be purified. The raw water 210 is, for example, industrial wastewater or domestic wastewater. The water pump 300 receives the raw water 210 from the raw water tank 200 via a pipe 250, and supplies the raw water 210 to the water treatment device 100 via a pipe 350. However, the example shown in FIG. 1 is merely one example of the water purification system 1000. That is, the water purification system 1000 may include other elements (for example, an adjustment tank for adjusting the pH of the raw water) in addition to these components, or some elements (for example, the water pump 300) may be omitted from these components.

[Configuration of water treatment device]
The configuration of the water treatment device 100 will be described below. The above-mentioned Fig. 1 corresponds to a side cross-sectional view showing the configuration of the water treatment device 100 as viewed from the left side. Fig. 2 is a plan view showing the configuration of the water treatment device 100 according to one embodiment of the present invention. As shown in Figs. 1 and 2, the water treatment device 100 of this embodiment includes a water treatment tank 10, a plurality of carrier-filled tanks 20, and a transfer device 30.

The water treatment tank 10 is a treatment tank to which the treated water 110, which is the target for purification, is supplied. In this embodiment, the treated water 110 is raw water 210 supplied from the raw water tank 200. Inside the water treatment tank 10, multiple carrier-filled tanks 20 are arranged. The inlet 11 of the water treatment tank 10 is connected to the water supply pump 300 via piping 350. The outlet 12 of the water treatment tank 10 is connected to a downstream treatment tank (e.g., a disinfection tank, etc.) (not shown) via piping 150. The inside of the water treatment tank 10 is filled with the treated water 110 flowing in from the inlet 11, and multiple carrier-filled tanks 20 are submerged in the treated water 110.

The water treatment tank 10 further has a movable member 13. The movable member 13 is arranged at a predetermined interval on the inner wall surface in the left-right direction of the water treatment tank 10. As described below, the movable member 13 functions as a partition member that separates the inside of the water treatment tank 10 into multiple compartments by utilizing the outer wall surface in the front-rear direction of the carrier-filled tank 20. As shown in FIG. 2, when the water treatment device 100 is in an operating state, the free end side of the movable member 13 is pressed against the front outer wall surface of the carrier-filled tank 20 by the water flow formed by the water to be treated 110.

The carrier filled tank 20 is a treatment tank for removing dissolved substances (colloid particles and fine particles) from the water to be treated 110. The inside of the carrier filled tank 20 is filled with an adsorbent 29 using activated carbon as a carrier. In this embodiment, the water to be treated 110 is brought into contact with the adsorbent 29 filled inside the carrier filled tank 20, so that the dissolved substances contained in the water to be treated 110 are adsorbed into the pores of the activated carbon and removed. In particular, in this embodiment, activated carbon carrying iron inside the pores is used as the adsorbent 29, so that phosphorus contained in the water to be treated 110 can be efficiently removed. The removal of phosphorus using activated carbon carrying iron is described in, for example, JP 2019-107632 A. Note that, in this embodiment, an example of using physical adsorption using activated carbon as a carrier is shown, but this example is not limited to this example. For example, it is also possible to use chemical adsorption using zeolite as a carrier.

The carrier filled tank 20 has an inlet 21 through which the water to be treated 110 is supplied, and an outlet 22 through which the water to be treated 110 is discharged. The carrier filled tank 20 is detachable from the water treatment tank 10, and can be transported in and out in the vertical direction. The carrier filled tank 20 also has a connecting portion 23 for connecting to a support member 33 of the transfer device 30 described below. This allows the carrier filled tank 20 to be moved horizontally inside the water treatment tank 10.

The transfer device 30 has the function of moving multiple carrier-filled tanks 20. Specifically, the transfer device 30 of this embodiment has the role of moving multiple carrier-filled tanks 20 toward the upstream side of the water to be treated 110 (the side closer to the inlet 11 of the water treatment tank 10). As shown in FIG. 1, in this embodiment, the transfer device 30 includes a traction device 32 that winds up the rope 31, and support members 33 that are fixed to the rope 31 at predetermined intervals and connected to each carrier-filled tank 20. The traction device 32 is, for example, a winch.

As shown in FIG. 2, the support member 33 is a columnar or plate-shaped member having a longitudinal direction, and is hung across the left and right side walls of the water treatment tank 10. The support member 33 includes a connecting portion 33a for connecting to the rope 31, and a connecting portion 33b for connecting to the connecting portion 23 of the carrier filling tank 20. The connecting portion 33b of the support member 33 and the connecting portion 23 of the carrier filling tank 20 are connected, for example, using a connecting member whose length is variable. Although the connecting member is not shown in FIG. 1 and FIG. 2, for example, a lever hoist can be used as the connecting member.

The water to be treated 110 supplied from the inlet 11 of the water treatment device 100 is supplied from the inlet 21 of the carrier packed tank 20 into the inside of the carrier packed tank 20. The water to be treated 110 supplied into the inside of the carrier packed tank 20 flows toward the outlet 22 of the carrier packed tank 20. At that time, the water to be treated 110 moves while contacting the adsorbent 29, so that the dissolved substances contained in the water to be treated 110 are adsorbed by the adsorbent 29. In this way, inside the carrier packed tank 20, the water to be treated 110 is adsorbed in a downward flow. The water to be treated 110 flowing out from the outlet 22 of the carrier packed tank 20 flows toward the inlet 21 of the adjacent carrier packed tank 20 in the subsequent stage, and passes through the inside of the carrier packed tank 20 again. Note that, although an example of adsorption treatment of the water to be treated 110 in a downward flow is shown here, adsorption treatment may also be performed in an upward flow.

By repeating the above cycle, the water to be treated 110 is purified by a multi-stage adsorption method using four carrier-filled tanks 20. In FIG. 1, the arrows shown by dashed lines represent the flow of the water to be treated 110 from the inlet 11 to the outlet 12 of the water treatment tank 10. The water to be treated 110 flowing out from the outlet 22 of the carrier-filled tank 20 in the final stage (the most downstream side) is supplied to the subsequent treatment tank from the outlet 12 of the water treatment tank 10 via piping 150. The treated water 110 that has completed the adsorption process in the carrier-filled tank 20 in the final stage is generally called treated water.

Figure 3 is a plan view for explaining the operating state of the water treatment device 100 according to one embodiment of the present invention. Specifically, Figure 3(A) shows the state of the water treatment device 100 when not in operation, and Figure 3(B) shows the state of the water treatment device 100 when in operation. For ease of explanation, Figure 3 omits the illustration of the transfer device 30 and adsorbent 29 shown in Figures 1 and 2.

Figure 4 is a diagram showing the configuration of the movable member 13 in the water treatment device 100 of one embodiment of the present invention. Figure 4(A) is a diagram showing the carrier filled tank 20 shown in Figure 3(A) as viewed from the upstream side of the water to be treated 110, and Figure 4(B) is a diagram showing the carrier filled tank 20 shown in Figure 3(A) as viewed from the downstream side of the water to be treated 110.

As shown in FIG. 3A, the carrier-filled tanks 20 are arranged at a predetermined interval inside the water treatment tank 10. However, the interval between adjacent carrier-filled tanks 20 does not need to be constant, and they may be spaced apart at different intervals. In addition, although an example in which the inlet 21 and the outlet 22 of each carrier-filled tank 20 are arranged in a straight line has been shown, this example is not limited to this example. For example, the inlet 21 may be moved to the left (or right) side and the outlet 22 to the right (or left) side, so that the water to be treated 110 passes obliquely through the inside of the carrier-filled tank 20 in a plan view. When the water to be treated 110 passes obliquely through the inside of the carrier-filled tank 20, the contact time between the water to be treated 110 and the adsorbent 29 increases, thereby improving the removal efficiency of dissolved substances.

The movable members 13 are attached to the inner wall surface in the left-right direction of the water treatment tank 10 at a predetermined interval. However, the interval between adjacent movable members 13 does not need to be constant, and they may be spaced at different intervals according to the arrangement of the carrier-filled tank 20. As shown in Figures 3(A), 4(A) and 4(B), one end of the movable member 13 is attached to the inner wall surface of the water treatment tank 10, and the other end is a free end. In this embodiment, the movable member 13 is a plate-shaped elastic member. Specifically, the movable member 13 is composed of a rubber member processed into a plate shape. At this time, the other end (free end) of the movable member 13 is located between the adjacent carrier-filled tanks 20. That is, as shown in Figures 4(A) and 4(B), when viewed from the upstream or downstream side of the water to be treated 110, the end of the movable member 13 and the carrier-filled tank 20 are in a positional relationship such that they overlap.

When the water to be treated 110 is continuously supplied to the inside of the water treatment tank 10 in the state shown in FIG. 3(A), the water treatment device 100 transitions to the operating state shown in FIG. 3(B). In FIG. 3(B), the arrows shown by dashed lines represent the flow of the water to be treated 110 from the inlet 11 to the outlet 12 of the water treatment tank 10. In this embodiment, the outside of the carrier filling tank 20 is also filled with the water to be treated 110, so that a water flow caused by the water to be treated 110 is generated throughout the inside of the water treatment tank 10.

As shown in FIG. 3B, when a water flow occurs inside the water treatment tank 10, the movable members 13, which are made of elastic material, are pushed by the water flow and bend toward the downstream side. The curved ends of each movable member 13 are pressed against the front outer wall surface of each carrier-filled tank 20 and come into close contact. In this way, the pair of movable members 13 and the front outer wall surfaces of the carrier-filled tanks 20 that contact the movable members 13 function as partitions, and the water treatment tank 10 is separated into multiple compartments. In other words, almost all of the treated water 110 that has been adsorbed in the carrier-filled tank 20 at the previous stage flows into the interior of the carrier-filled tank 20 at the subsequent stage.

[Operation of water treatment device when replacing adsorbent]
Next, the operation of the water treatment device 100 when replacing the adsorbent 29 disposed inside the carrier packed tank 20 will be described. When the water treatment device 100 is operated, the adsorbent 29 on the upstream side adsorbs a large amount of dissolved substances, and the adsorption efficiency gradually decreases. In addition, the adsorbent 29 on the downstream side needs to adsorb trace amounts of dissolved substances contained in the water to be treated 110, and therefore requires higher adsorption performance than the adsorbent on the upstream side. Therefore, in the water treatment device 100 of this embodiment, operation is temporarily stopped at predetermined time intervals to replace the adsorbent 29.

The timing for replacing the adsorbent 29 may be the point in time when it is determined that the adsorption performance has fallen below a predetermined level. For example, a concentration sensor may be provided near the outlet 12 of the water treatment tank 10 to monitor the concentration of dissolved substances (e.g., phosphorus concentration) in the water to be treated 110, and when the concentration of the dissolved substances exceeds a predetermined value, it may be determined that the adsorption performance has fallen below the predetermined level. However, this is not limiting, and for example, the change over time in the adsorption performance of the adsorbent 29 may be checked in advance, and the replacement timing may be determined by managing the usage time of the adsorbent 29.

Figures 5 and 6 are diagrams for explaining the operation of the water treatment device 100 when replacing the adsorbent 29 of one embodiment of the present invention. Specifically, Figure 5 is a plan view of the water treatment device 100, and Figure 6 is a side cross-sectional view of the water treatment device 100. To simplify the explanation, some components such as the transfer device 30 are not shown.

First, as shown in Figures 5(A) and 6(A), after temporarily suspending the operation of the water treatment device 100, the most upstream carrier packed tank 20 is lifted upward and removed from the water treatment tank 10. The carrier packed tank 20 may be removed using heavy machinery such as a crane, or a towing device such as a large winch. In this embodiment, the carrier packed tank 20 is removed while still filled with the adsorbent 29.

Next, the transfer device 30 is returned to its original position, and each carrier filled tank 20 is moved toward the upstream side of the water to be treated 110, as shown in Figures 5 (B) and 6 (B). In this embodiment, the rope 31 is pulled using the traction device 32 shown in Figures 1 and 2, and the three carrier filled tanks 20 connected to each support member 33 are moved upstream together. At that time, the movable member 13 made of an elastic member is pushed aside by the carrier filled tank 20 and bends toward the upstream side. Therefore, the movable member 13 does not hinder the movement of the carrier filled tanks 20.

When the leading carrier tank 20 has moved to the most upstream position, a new carrier tank 20 is brought into the most downstream position of the water treatment tank 10, as shown in Figures 5(C) and 6(C). The inside of the newly brought-in carrier tank 20 is filled with regenerated (desorbed) adsorbent 29. The regenerated adsorbent 29 may be the adsorbent that was transported out of the water treatment device 100 when the adsorbent 29 was last replaced. However, this is not the only example, and the newly supplied adsorbent 29 may be an unused adsorbent.

As described above, in this embodiment, by arranging multiple carrier-filled tanks 20 inside the water treatment tank 10, there is no need to install equipment such as adsorption towers individually, and the footprint of the water treatment device can be reduced. In addition, when replacing the adsorbent 29, the only operation required is to remove and attach the carrier-filled tank 20 and move it horizontally, so there is no need for complex operating operations such as sequentially changing the water flow. Therefore, according to this embodiment, it is possible to provide a water treatment device that is easy to operate and has excellent maintainability.

(Modification 1 of the first embodiment)
In the present embodiment, an example in which the carrier packed tank 20 is moved using the transfer device 30 has been described, but the present invention is not limited to this example, and the carrier packed tank 20 may be moved manually. In this case, the transfer device 30 may be omitted.

In addition, an aeration device may be provided at the bottom of the water treatment device 100 of this embodiment or at the bottom of the carrier-filled tank 20. That is, by performing aeration at the bottom of the water treatment device 100 or the bottom of the carrier-filled tank 20, it is possible to increase the buoyancy of the carrier-filled tank 20. When such an aeration device is provided for the water treatment device 100, the force required to move the carrier-filled tank 20 can be reduced, so that the towing device 32 or the transport device 30 can be omitted and the carrier-filled tank 20 can be moved manually.

(Modification 2 of the First Embodiment)
In this embodiment, an example in which a plate-shaped elastic member is used as the movable member 13 has been shown, but the present invention is not limited to this example. The movable member 13 may be a member in which one end is fixed and the other end can move freely. For example, a plate-shaped member made of a metal material or a plastic material may be used as the movable member 13. In this case, one end of the movable member 13 may be supported rotatably against the inner wall surface of the water treatment tank 10, and the other end may be allowed to move freely. In addition, the movable member 13 may be biased toward the downstream side using a spring or the like, and the end of the movable member 13 on the freely moving side may be pressed against the outer wall surface in front of the carrier filling tank 20. Since one end of the movable member 13 in this modified example is supported rotatably, the movement of each carrier filling tank 20 when moving forward is not hindered.

(Modification 3 of the first embodiment)
In this embodiment, an example is shown in which the water to be treated 110 is purified by an adsorption process using activated carbon as a carrier, but the present invention is not limited to this example. For example, the water to be treated 110 can also be purified by a biological process using microorganisms. When using biological process, a carrier carrying microorganisms can be filled in the carrier filling tank 20 instead of the adsorbent 29. In this case, the carrier can be, for example, a member of several centimeters square made of a porous resin.

As described in the above-mentioned variant 1, when aeration is performed inside the carrier-packed tank 20, the carrier-packed tank 20 can function as an aeration tank by using aerobic microorganisms as the microorganisms.

(Fourth Modification of the First Embodiment)
In this embodiment, an example has been shown in which the adsorbent 29 is directly filled into the inside of the carrier packed tank 20, but the adsorbent 29 filled in a basket-type container may be placed inside the carrier packed tank 20. The container may be made of a mesh or net-like member having gaps large enough to prevent the filled adsorbent 29 from falling out.

According to this modified example, when replacing the adsorbent 29, the adsorbent 29 is first removed from the most upstream carrier filled tank 20 together with the container, and then the carrier filled tank 20 is transported out. Because the container is mesh or net-like, the treated water 110 inside is discharged to the outside when it is transported out. Therefore, according to this modified example, the load required to transport the carrier filled tank 20 can be reduced.

When the carrier-filled tank 20 is brought into the water treatment tank 10, the carrier-filled tank 20 is first brought into the water treatment tank 10, and then the adsorbent 29 placed in a container is brought into the carrier-filled tank 20. In this case, the wall of the container allows the water 110 to pass through, so the load when the adsorbent 29 is submerged in the water 110 can be reduced.

Second Embodiment
In this embodiment, a water treatment device 100a having a structure different from that of the first embodiment will be described. Specifically, the water treatment device 100a of this embodiment has rail portions on the upper surfaces of the left and right side walls of the water treatment tank 10 to assist the movement of the support member 33 of the transfer device 30. In this embodiment, the same elements as those in the first embodiment are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

7 is a diagram showing the configuration of a water treatment device 100a according to one embodiment of the present invention. Specifically, FIG. 7(A) is a plan view of the water treatment device 100a, and FIG. 7(B) is an enlarged view showing the configuration of the rail portion 14 shown in FIG. 7(A). As shown in FIG. 7(A), the water treatment device 100a according to this embodiment has a rail portion 14 on the upper surface of the left-right side wall 10a of the water treatment tank 10. As shown in FIG. 7(B), the rail portion 14 has a structure in which a plurality of rotatable bodies 14b supported rotatably are arranged linearly inside the housing 14a. The rail portion 14 according to this embodiment is a so-called roller rail. The water treatment device 100a according to this embodiment has the advantage that the support member 33 of the transfer device 30 moves on the rail portion 14, so that less force is required to move the carrier filling tank 20.

8 is an enlarged view of the vicinity of the connection between the support member 33 and the carrier-filled tank 20 in the water treatment device 100a according to one embodiment of the present invention. FIG. 8(A) shows the appearance of the vicinity of the connection between the support member 33 and the carrier-filled tank 20, and FIG. 8(B) shows a side view of the connection between the connection part 33b of the support member 33 and the connection member 34. As shown in FIG. 8(A), the connection part 33b of the support member 33 and the connection part 23 of the carrier-filled tank 20 are connected using the connection member 34. In this embodiment, the connection member 34 is, for example, a lever hoist. However, this is not limited to this example, and the connection member 34 may be a device including a chain or rope whose length is variable. In other words, the connection member 34 may be a member that can connect the two so that the carrier-filled tank 20 can be moved in accordance with the movement of the support member 33. It is preferable that the connection member 34 has a mechanism for changing the distance between the connection part 33b and the connection part 23.

In this embodiment, the connecting portion 33b of the support member 33 has an opening 33c. As shown in FIG. 8(B), the connecting member 34 is connected to the support member 33 by hooking the hook portion 34a to the opening 33c. Although not shown here, the connecting method between the connecting portion 23 of the carrier-filled tank 20 and the connecting member 34 uses a configuration similar to that shown in FIG. 8(B). In this embodiment, a lever hoist is used as the connecting member 34, so the distance between the support member 33 and the carrier-filled tank 20 is variable. Therefore, when the water treatment device 100a is in operation, the bottom of the carrier-filled tank 20 and the bottom of the water treatment tank 10 are in contact with each other, and when the water treatment device is not in operation, the carrier-filled tank 20 may be lifted slightly to reduce the load when moving. Also, as shown in FIG. 8(A), the rail portion 14 is fixed to the upper surface 10b of the left-right side wall 10a of the water treatment tank 10 by a clamp 14c. However, this is not a limitation, and the rail portion 14 may be fixed to the upper surface 10b with bolts or the like.

(Modification of the second embodiment)
Fig. 9 is an enlarged view of the vicinity of the connection portion between the support member 33 and the carrier packed tank 20 in a water treatment device 100a according to a modified example of one embodiment of the present invention. Specifically, Fig. 9 shows the appearance of the vicinity of the connection portion between the support member 33 and the carrier packed tank 20. The difference from the structure shown in Fig. 8 is that in the example shown in Fig. 9, connecting members 35 fixed to the left and right side walls of the carrier packed tank 20 are directly connected to connecting portions 33b of the support member 33.

The connecting member 35 is a columnar member having a hook portion 35a at its tip. As with the structure described using FIG. 8(B), the connecting member 35 is connected to the support member 33 by hooking the hook portion 35a into the opening 33c of the connecting portion 33b. Note that in FIG. 9, a columnar member is shown as an example of the connecting member 35, but this is not limiting, and a rope or chain may be included in part of the connecting member 35 to allow freedom of movement of the carrier filling tank 20.

Third Embodiment
In this embodiment, a carrier packed tank 20a having a structure different from that of the first embodiment will be described. Specifically, the carrier packed tank 20a of this embodiment is provided with a plurality of holes 25 in a bottom portion 24. In this embodiment, the same elements as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Figure 10 is a diagram showing the configuration of the carrier packed tank 20a in a water treatment device according to one embodiment of the present invention. Specifically, Figure 10(A) is a plan view of the carrier packed tank 20a, and Figure 10(B) is a cross-sectional view of the carrier packed tank 20a taken along line segment A-A shown in Figure 10(A). As shown in Figure 10(A), the carrier packed tank 20a of this embodiment has a plurality of holes 25 provided in the bottom 24.

The arrangement of the multiple holes 25 may be regular or irregular. In this embodiment, an example in which the outer shape of the multiple holes 25 is circular is shown, but this is not limiting, and the outer shape of the multiple holes 25 may be polygonal, elliptical, or other shapes. However, it is desirable that the diameter of the hole 25 is smaller than the diameter of the adsorbent 29 arranged inside the carrier packed tank 20a so that the adsorbent 29 does not flow out.

In this embodiment, the multiple holes 25 are used as holes for the inflow or outflow of water. For example, as described in the first embodiment, when replacing the adsorbent 29, the most upstream carrier filled tank 20a is removed from the water treatment tank 10, but the inside of the carrier filled tank 20a is filled with the water to be treated 110 and the adsorbent 29. In this embodiment, when the carrier filled tank 20a is lifted, the water to be treated 110 is discharged from the multiple holes 25, so the load required to remove the carrier filled tank 20a can be reduced.

Conversely, when the carrier-filled tank 20a is brought into the most downstream side of the water treatment tank 10, the inside of the carrier-filled tank 20a is filled with air. On the other hand, since the inside of the water treatment tank 10 is filled with the water to be treated 110, if the carrier-filled tank 20a is brought into the water to be treated as is, the buoyancy is too strong and it takes a long time to sink it. In this case, in this embodiment, when the carrier-filled tank 20a is submerged in the water to be treated 110, the water to be treated 110 flows into the carrier-filled tank 20a through the multiple holes 25, so the load and time required to sink the carrier-filled tank 20a can be reduced.

In the carrier packed tank 20a of this embodiment, the treated water 110 flows in and out using multiple holes 25, so the larger the diameter of each hole 25, the more the operation time can be reduced. However, as mentioned above, it is desirable to keep the diameter of the multiple holes 25 within a range that does not allow the adsorbent 29 to flow out from inside the carrier packed tank 20a.

As described above, in the water treatment device of this embodiment, since the bottom 24 of each of the multiple carrier-filled tanks 20a is provided with multiple holes 25, the load of the carrier-filled tanks 20a when being transported into and out of the water treatment tank 10 can be reduced. Note that, although an example in which multiple holes 25 are provided in the bottom 24 of the carrier-filled tank 20a has been shown in this embodiment, this is not limiting, and multiple holes may be provided in a portion of the side wall in the front-rear or left-right direction (preferably the lower part of the side wall).

(Modification of the third embodiment)
11 is a diagram showing the configuration of the carrier-filled tank 20b in the water treatment device according to one embodiment of the present invention. Specifically, FIG. 11(A) is a plan view of the carrier-filled tank 20b, and FIG. 11(B) is a cross-sectional view of the carrier-filled tank 20b cut along the line B-B shown in FIG. 11(A). As shown in FIG. 11(A), the carrier-filled tank 20b of this embodiment has a plurality of holes 25 in the bottom 24. Furthermore, the carrier-filled tank 20b has a partition wall 26 inside, so that a part of the side wall constitutes a double wall 27. The double wall 27 has a cavity 28 inside, which is filled with air. However, this is not limited to this example, and a foam may be provided inside the cavity 28.

The carrier-filled tank 20b shown in FIG. 11 has a double wall 27 that functions as a buoyant body, so that the load required for moving the tank 20b forward when replacing the adsorbent 29 can be reduced. In addition, when the most upstream carrier-filled tank 20b is removed from the water treatment tank 10, the load required for removal can be reduced because the carrier-filled tank 20b has a strong buoyancy. Furthermore, similar to the carrier-filled tank 20a shown in FIG. 10, the bottom 24 of the carrier-filled tank 20b also has multiple holes 25. Therefore, even if the carrier-filled tank 20b has a strong buoyancy, the load required for submerging the carrier-filled tank 20b in the water to be treated 110 can be reduced.

In FIG. 11, an example is shown in which multiple holes 25 are provided in the bottom 24 of the carrier packed tank 20b, but the multiple holes 25 may be omitted. Even in this case, the effect of reducing the load required to move the carrier packed tank 20b forward and upward can be obtained.

Fourth Embodiment
In this embodiment, a water treatment device 100c having a different structure from that of the first embodiment will be described. Specifically, in the water treatment device 100c of this embodiment, the carrier packed tanks 20c are arranged in close proximity to each other. Here, "arranged in close proximity" includes the case where they are arranged in close proximity to each other and the case where they are not in contact but are arranged at a small distance. In this embodiment, the same elements as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Figure 12 is a side cross-sectional view showing the configuration of a water treatment device 100c according to one embodiment of the present invention. In this embodiment, the individual carrier filled tanks 20c are arranged close to each other, so that the number of carrier filled tanks 20c arranged inside the water treatment tank 10 can be increased compared to the water treatment device 100 of the first embodiment. In other words, the overall treatment capacity of the water treatment device 100c can be increased.

In this embodiment, each carrier packed tank 20c is arranged alternately in the opposite direction. That is, as shown in FIG. 12, the outlet 22 of the carrier packed tank 20c in the first stage and the inlet 21 of the carrier packed tank 20c in the second stage are arranged close to each other. Therefore, the treated water 110 supplied to the most upstream carrier packed tank 20c flows backwards while alternately flowing downward and upward.

In this embodiment, since each carrier-filled tank 20c is disposed close to each other, there is no need to provide a movable member between adjacent carrier-filled tanks 20c as in the first embodiment. However, if there is a gap between the water treatment tank 10 and the carrier-filled tank 20c, it is desirable to provide a shielding member to prevent the untreated water 110 from flowing backward.

Figure 13 is a diagram showing the configuration of the shielding member 15 in a water treatment device 100c according to one embodiment of the present invention. Specifically, Figure 13(A) is a plan view of the water treatment device 100c. Figure 13(B) is a diagram showing the carrier filled tank 20c shown in Figure 13(A) as viewed from the upstream side of the water to be treated 110, and Figure 13(c) is a diagram showing the carrier filled tank 20c shown in Figure 13(A) as viewed from the downstream side of the water to be treated 110.

As shown in FIG. 13(A), the carrier-filled tank 20c of this embodiment has a shielding member 15 on the outer wall surface in the left-right direction. The shielding member 15 has a height that reaches from the outer wall surface of the carrier-filled tank 20c to the inner wall surface in the left-right direction of the water treatment tank 10, and is in close contact with both the outer wall surface of the carrier-filled tank 20c and the inner wall surface of the water treatment tank 10. Therefore, untreated water to be treated supplied from the inlet 11 of the water treatment tank 10 does not pass by the side of each carrier-filled tank 20c and reach the outlet 12.

The shielding member 15 is made of an elastic material. For example, a rubber member can be used as the shielding member 15. In this embodiment, a semicircular rubber member is attached to the front end of the outer wall surface of the carrier-filled tank 20c. As shown in Figures 13(B) and 13(C), the shielding member 15 has a length that is approximately the same as the height of the carrier-filled tank 20c. This makes it possible to prevent untreated water 110 from flowing between the inner wall surface of the water treatment tank 10 and the outer wall surfaces in the left-right direction of the carrier-filled tank 20c.

Fifth Embodiment
In this embodiment, a water treatment device 100d having a structure different from that of the first and fourth embodiments will be described. Specifically, the water treatment device 100d of this embodiment has a rotating member 41 for movement on the outer wall surface in the left-right direction of each of the multiple carrier filled tanks 20d, and a water treatment tank 50 has a rail portion 51 for guiding the movement of the rotating member 41 of each carrier filled tank 20d. In this embodiment, the same elements as those of the first and fourth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

Figure 14 is a diagram showing the configuration of a water treatment device 100d according to one embodiment of the present invention. Specifically, Figure 14(A) is a plan view of the water treatment device 100d, and Figure 14(B) is a side cross-sectional view of the water treatment device 100d. Figure 15 is a diagram showing the configuration of a carrier filled tank 20d in a water treatment device 100d according to one embodiment of the present invention. Specifically, Figure 15(A) is a view of the carrier filled tank 20d from the upstream side, and Figure 15(B) is a view of the carrier filled tank 20d from the side.

As shown in FIG. 14, the water treatment device 100d of this embodiment includes a plurality of carrier-filled tanks 20d with a rotating member 41 on the outer wall surface in the left-right direction, and a water treatment tank 50 with a rail portion 51 on the inner wall surface in the left-right direction. In this embodiment, each carrier-filled tank 20d is in contact with the water treatment tank 50 via the rotating member 41. Therefore, the load required for the movement of the carrier-filled tank 20d can be reduced by rotating the rotating body 41a of the rotating member 41 when moving forward. In this embodiment, the rotating member 41 has a rotating body 41a embedded in the support base 41b and supported rotatably. The rotating member 41 assists the movement of the carrier-filled tank 20d by rotating the rotating body 41a. The rotating member 41 of this embodiment is a so-called ball caster. However, this is not limited to this example, and the rotating member 41 may be a caster-type wheel.

On the other hand, the water treatment tank 50 has a rail portion 51 on the inner wall surface in the left-right direction that guides the movement of the rotating member 41. As shown in FIG. 14(B), the rail portion 51 includes a first rail portion 51a extending in the longitudinal direction of the water treatment tank 50 and a second rail portion 51b extending in a direction intersecting the longitudinal direction. In this embodiment, the first rail portion 51a and the second rail portion 51b are substantially perpendicular to each other.

The rail portion 51 is a groove portion provided on the inner wall surface of the water treatment tank 50. Each carrier-filled tank 20d moves while contacting the rotating body 41a with the inside of the rail portion 51. When each carrier-filled tank 20d moves forward, each rotating member 41 is guided by the first rail portion 51a. When the most upstream carrier-filled tank 20d is transported upward, the rotating member 41 is guided by the second rail portion 51b. Similarly, when the most downstream carrier-filled tank 20d is transported, the rotating member 41 is guided by the second rail portion 51b. In this embodiment, the rotating body 41a of the rotating member 41 can rotate in any direction. Therefore, the rotating member 41 can assist not only the movement in the forward and backward directions in each carrier-filled tank 20d, but also the movement in the up and down directions.

Although not shown in the present embodiment, a shielding member is provided on the outer wall surface in the left and right direction of the carrier-filled tank 20d to prevent the untreated water 110 from passing through the gap between the water treatment tank 50 and the carrier-filled tank 20d and flowing backward. The shielding member 15 described in the fourth embodiment can be used as the shielding member. Specifically, as shown in FIG. 13, a shielding member 15 having a length approximately equal to the height of the carrier-filled tank 20d is provided at the front end of the outer wall surface of each carrier-filled tank 20d. The shielding member 15 provided on the carrier-filled tank 20d located at the most upstream side blocks the water flow, thereby preventing the untreated water 110 from passing through the gap between the inner wall surface of the water treatment tank 50 and the outer wall surface in the left and right direction of the carrier-filled tank 20d.

(Modification of the fifth embodiment)
In the present embodiment, a rotating member 41 for assisting the movement of each carrier packed tank 20d is provided on the outer wall surface in the left-right direction of each of the multiple carrier packed tanks 20d, as an example. However, the present invention is not limited to this example, and it is also possible to provide the rotating member 41 on another outer wall surface to assist the movement of the carrier packed tank 20d.

For example, if a rotating member 41 is provided on the outer wall surface of the bottom of each carrier-filled tank 20d, it is possible to assist the movement of each carrier-filled tank 20d in the forward and backward directions. In this case, a first rail portion 51a (a rail portion extending in the longitudinal direction of the water treatment tank 50) can be provided on the inner wall surface of the bottom of the water treatment tank 50 to guide the rotating member 41.

In addition, if a rotating member 41 is provided on the front outer wall surface or the rear outer wall surface of each carrier-filled tank 20d, the vertical movement of each carrier-filled tank 20d can be assisted. In this case, a second rail portion 51b (a rail portion extending in a direction intersecting the longitudinal direction of the water treatment tank 50) can be provided on the front inner wall surface or the rear inner wall surface of the water treatment tank 50 to guide the rotating member 41.

Sixth Embodiment
In this embodiment, a water treatment device 100e having a structure different from that of the first and fourth embodiments will be described. Specifically, the water treatment device 100e of this embodiment has a function of moving forward a plurality of carrier-filled tanks 20e arranged inside the water treatment tank 10. In this embodiment, the same elements as those of the first and fourth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

Figure 16 is a diagram showing the configuration of a water treatment device 100e according to one embodiment of the present invention. Specifically, Figure 16(A) is a plan view of the water treatment device 100e, and Figure 16(B) is a side cross-sectional view of the water treatment device 100e. The arrows shown by dashed dotted lines indicate the flow of the water to be treated 110 flowing through the water treatment device 100e.

The water treatment device 100e of this embodiment is equipped with a transfer device 60. The transfer device 60 has the function of moving the multiple carrier-filled tanks 20e arranged inside the water treatment tank 10 forward. In this embodiment, the transfer device 60 is provided at a rear corner of the water treatment tank 10. However, the transfer device 60 only needs to be arranged at the rear of the water treatment tank 10, and may be arranged at a position other than the corner.

The transfer device 60 includes an expandable member 60a that expands and contracts in the front-to-rear direction of the water treatment tank 10. The expandable member 60a has a structure in which, for example, a flat plate is provided at the tip of a rod-shaped member (rod) for pushing the carrier-filled tank 20e. However, this is not limited to this example, and any structure that can push the carrier-filled tank 20e may be used.

The telescopic movement of the telescopic member 60a may be achieved, for example, by using a hydraulic, electric, or gas actuator (e.g., an electric cylinder, etc.), or by using a rack and pinion. When a rack and pinion is used, a rotating handle or the like may be provided so that the telescopic movement can be performed manually. By extending the telescopic member 60a toward the front of the water treatment tank 10, the carrier filling tank 20e can be pushed forward.

The carrier-filled tanks 20e also have an elastic member 61 on at least one of the front and rear outer wall surfaces. As shown in FIG. 16(A), the elastic member 61 in this embodiment is provided on the left and right side end portions of the front and rear outer wall surfaces of each carrier-filled tank 20e. As shown in FIG. 16(B), the elastic member 61 is provided with a length that matches the vertical length (height) of the carrier-filled tank 20e. However, it is sufficient that the elastic member 61 is at least as long as the length from the bottom of the water treatment tank 10 to the water surface height of the water to be treated 110.

The elastic member 61 is, for example, a rubber member, and functions as a so-called packing. During operation, the water treatment device 100e of this embodiment uses the transfer device 60 to press each carrier-filled tank 20e forward to perform treatment. At that time, as shown in FIG. 16(A), the elastic members 61 of each carrier-filled tank 20e are pressed against each other and tightly adhered to each other. This makes it possible to prevent untreated water to be treated 110 from flowing backward through the gap between the inner wall surface of the water treatment tank 10 and the outer wall surfaces on the left and right sides of the carrier-filled tank 20e.

In the water treatment device 100e of this embodiment, when replacing the adsorbent (not shown) filled inside the carrier filled tank 20e (i.e., when not in operation), the expandable member 60a of the transfer device 60 is contracted to release the restraint of each carrier filled tank 20e. In this state, the carrier filled tank 20e on the most upstream side is removed. Next, the expandable member 60a of the transfer device 60 is extended to push each carrier filled tank 20e forward, leaving a space at the rearmost side of the water treatment tank 10. After that, a carrier filled tank 20e filled with new adsorbent is brought in into the space that has been vacated. Through the above process, the adsorbent replacement work is completed.

As described above, the water treatment device 100e of this embodiment is equipped with a transfer device 60 including an elastic member 60a and an elastic member 61, and thus can perform efficient water treatment and adsorbent replacement. In other words, according to this embodiment, a water treatment device that is easy to operate and has excellent maintainability can be provided.

(Modification of the sixth embodiment)
In this embodiment, an example in which the transfer device 60 is provided only at the rear of the water treatment tank 10 has been shown, but the present invention is not limited to this example. For example, the transfer device 60 may be provided at the front and rear of the water treatment tank 10. The transfer device provided at the front can move each carrier filled tank 20e toward the rear. Therefore, when it is desired to leave space on the upstream side of the water treatment tank 10, the transfer device provided at the front can move each carrier filled tank 20e toward the downstream side.

Seventh Embodiment
In this embodiment, a water treatment device 100f having a structure different from that of the first and fourth embodiments will be described. Specifically, in the water treatment device 100f of this embodiment, a member for suppressing forward movement of a plurality of carrier filled tanks 20f is provided inside the water treatment tank 10f. In this embodiment, the same elements as those in the first and fourth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

Figure 17 is a diagram showing the configuration of a water treatment device 100f according to one embodiment of the present invention. Specifically, Figures 17(A) and 17(B) are plan views of the water treatment device 100f, and Figure 17(C) is a side view of the carrier filling tank 20f.

As shown in FIG. 17(A), the water treatment tank 10f of this embodiment has a stopper member 16a near the front inner wall surface. The stopper member 16a is, for example, a columnar member made of a metal material or a resin material (including a plastic material). The stopper member 16a is a member that functions as a stopper that stops the forward movement of the carrier filling tank 20f located at the forefront. That is, in the example shown in FIG. 17(A), the carrier filling tank 20f is configured not to proceed beyond a position separated from the front inner wall surface of the water treatment tank 10f by the thickness of the stopper member 16a.

The above-mentioned configuration ensures that there is a space between the front inner wall surface of the water treatment tank 10f and the forwardmost carrier-filled tank 20f, which is the thickness of the stopper member 16a. Therefore, even if the vertical positions of the inlet 11 for the water to be treated 110 in the water treatment tank 10f and the inlet 21 of the carrier-filled tank 20f are different, the flow of the water to be treated 110 is not impeded.

Figure 17 (B) shows an example in which a plate-shaped stopper member 16b is provided at a position a predetermined distance away from the front inner wall surface of the water treatment tank 10f. In the example shown in Figure 17 (B), the carrier-filled tank 20f cannot proceed beyond the position where the stopper member 16b is provided. Therefore, a predetermined distance of space can be secured between the front inner wall surface of the water treatment tank 10f and the carrier-filled tank 20f located at the forefront.

In the configuration shown in FIG. 17(A) and FIG. 17(B), an elastic member 71 is provided on the outer wall surface at the front of each carrier filling tank 20f. The elastic member 71 is, for example, a rubber member. As shown in FIG. 17(C), the elastic member 71 is provided so as to surround the inlet 21 along the edge of the outer wall surface of the carrier filling tank 20f. However, the shape of the elastic member 71 is not limited to this example. For example, the elastic member 71 located at the upper end or lower end of the outer wall surface may be omitted. In other words, the portion of the elastic member 71 shown in FIG. 17(C) that does not contact the suppression member 16a or 16b may be omitted.

In this embodiment, when the water treatment device 100f is in operation, the transfer device 30 (not shown) described in the first or second embodiment is used to move each carrier-filled tank 20f forward. Therefore, the elastic member 71 of the carrier-filled tank 20f located at the frontmost position is in close contact with the suppression member 16a or 16b when the water treatment device 100f is in operation. This makes it possible to prevent the untreated water to be treated 110 from flowing backward through the gap between the inner wall surface in the left-right direction of the water treatment tank 10f and the outer wall surface in the left-right direction of the carrier-filled tank 20f.

(Modification 1 of the seventh embodiment)
In the present embodiment, an example in which the elastic member 71 is provided on the outer wall surface of the front of the carrier packed tank 20f has been shown, but the present invention is not limited to this example. The elastic member 71 may be provided on the outer wall surface of the rear of the carrier packed tank 20f, or the elastic member 71 may be omitted. In this case, the carrier packed tank 20f located at the forefront may directly abut against the suppressing member 16a or 16b, or the carrier packed tanks 20f may directly abut against each other. However, as long as the adhesion between the carrier packed tank 20f and the suppressing member 16a or 16b, or the adhesion between the carrier packed tanks 20f is not poor, the effect of this embodiment is not significantly impaired.

(Modification 2 of the Seventh Embodiment)
In the example shown in Fig. 17(B), a suppressing member 16b extending in the left-right direction is provided on the left-right inner wall surface of the water treatment tank 10f. However, the present invention is not limited to this example, and a suppressing member (not shown) extending in the front-rear direction may be provided on the front inner wall surface of the water treatment tank 10f. Even in this case, the effect of the present embodiment described above is not impaired.

The embodiments of the present invention and their variations can be combined as appropriate to the extent that they are not mutually inconsistent. Water treatment devices in which a person skilled in the art has appropriately added or removed components or modified the design, or added or omitted steps or modified conditions based on the above-described embodiments or their variations, are also included in the scope of the present invention as long as they include the gist of the present invention.

Furthermore, even if there are other effects and advantages different from those brought about by the above-mentioned embodiments or their modified forms, if they are clear from the description in this specification or can be easily predicted by a person skilled in the art, they are naturally understood to be brought about by the present invention.

10...water treatment tank, 10a...side wall, 10b...top surface, 11...inlet, 12...outlet, 13...movable member, 14...rail portion, 14a...housing, 14b...rotating body, 14c...clamp, 15...shielding member, 16a, 16b...restraining member, 20, 20a, 20b, 20c, 20d...carrier-filled tank, 21...inlet, 22...outlet, 23...connecting portion, 24...bottom, 25...hole, 26...partition wall, 27...double wall, 28...cavity, 29...adsorbent, 30...transport device, 31...rope, 32...traction device, 33...support member, 33a, 33b...connecting portion , 33c...opening, 34...connecting member, 34a...hook portion, 35...connecting member, 35a...hook portion, 41...rotating member, 41a...rotating body, 41b...support, 50...water treatment tank, 51...rail portion, 51a...first rail portion, 51b...second rail portion, 60...transfer device, 60a...expandable member, 61, 71...elastic member, 100, 100a, 100c, 100d...water treatment device, 110...water to be treated, 150...piping, 200...raw water tank, 210...raw water, 250...piping, 300...water pump, 350...piping, 1000...water purification system

Claims (6)

a water treatment tank to which water to be treated is supplied;
A plurality of carrier packed tanks arranged inside the water treatment tank so as to be movable forward;
A plurality of movable members each formed of a plate-like member and having one end fixed to an inner wall surface in the left-right direction of the water treatment tank;
Equipped with
When viewed from the upstream side along which the water to be treated flows, the other end of each movable member overlaps with each carrier packed tank,
A water treatment device wherein, when not in operation, the other end of each movable member is not in contact with the upstream outer wall surface of each carrier-filled tank, and, when in operation, the other end of each movable member is in contact with the upstream outer wall surface of each carrier-filled tank. The water treatment device according to claim 1, wherein the carrier-filled tank is detachable from the water treatment tank. The water treatment device according to claim 1, wherein the plurality of movable members are plate-shaped elastic members having one end fixed to the inner wall surface, or plate-shaped members having one end rotatably fixed to the inner wall surface. The water treatment device according to any one of claims 1 to 3, wherein the carrier-filled tank has a rotating member on its outer wall surface for movement. The water treatment device according to claim 4, wherein the water treatment tank has a rail portion that guides the rotating member. The water treatment device according to claim 5 , wherein the rail portion includes a first rail portion extending in a longitudinal direction of the water treatment tank, and a second rail portion extending in a direction intersecting the longitudinal direction.

Images