Containment water treatment system

Abstract

To provide a storable water treatment system that enables simple and stable supply of domestic water and a valve control method in the storable water treatment system.SOLUTION: A storable water treatment system includes a transportable container, a water treatment system stored in the container, a jack for pulling up the components of the water treatment system stored in the container, and guide rails to movably suspend and guide the jack in a horizontal direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a containment type water treatment system.

Background Art

[0002] For example, at a water purification plant, water purification equipment for removing suspended solids (SS: Suspended Solids) contained in raw water such as river water and well water (hereinafter also simply referred to as raw water) is used. Specifically, in such water purification equipment, for example, by mixing a flocculant into the raw water, the suspended solids contained in the raw water are flocculated and removed by sedimentation and filtration. As a result, at the water purification plant, for example, it becomes possible to produce safe domestic water from the raw water (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, generally, a large amount of cost is required for the construction of the above-mentioned water purification plant, and sufficient space is also required. Therefore, due to economic considerations and restrictions on the construction site, etc., there are cases where it is not possible to construct a water purification plant even in areas where the supply of domestic water is required.

[0005] Also, for example, when a disaster such as an earthquake occurs, the operation of the water purification plant itself may stop. Therefore, when only the water purification equipment installed in the water purification plant is used, the supply of domestic water to each consumer's home may stop. That is, there is a demand for providing a method for simply and stably supplying domestic water.

Means for Solving the Problems

[0006] To achieve the above object, the containment type water treatment system in the present invention includes a transportable container, a water treatment system housed in the container, a jack for lifting upward the components of the water treatment system stored in the container, and a guide rail for movably suspending the jack and guiding it in the horizontal direction.

Effect of the Invention

[0007] According to the containment type water treatment system in the present invention, it becomes possible to supply domestic water simply and stably.

Brief Description of the Drawings

[0008]

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BEST MODE FOR CARRYING OUT THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, such embodiment examples do not limit the technical scope of the present invention.

[0010] [Containment Type Water Treatment System 100 in the First Embodiment] First, the containment type water treatment system 100 in the first embodiment will be described.

[0011] FIG. 1 is a diagram for explaining a schematic configuration example of the containment type water treatment system 100 in the first embodiment.

[0012] As shown in FIG. 1, the containment type water treatment system 100 has, for example, a container 10 and a water treatment system 20 accommodated in the container 10.

[0013] The container 10 is, for example, a portable container. That is, the container 10 is a container that can be transported, for example, by being mounted on a truck or the like. Note that, for example, a means of movement such as a vehicle may be directly provided on the container 10.

[0014] The water treatment system 20 includes, for example, a mixer 1 that mixes raw water supplied from outside the container 10 and a flocculant to generate mixed water, and a filtration device 2 that filters the mixed water generated by the mixer 1. Hereinafter, raw water and mixed water are collectively referred to as treated water. The water treatment system 20 also includes a storage tank 3 that stores the flocculant. The flocculant stored in the storage tank 3 is supplied to the mixer 1 through a valve V1 and a valve V2 by, for example, a pump P. That is, the supply amount of the flocculant to the mixer 1 is adjusted by, for example, the pump P. Note that the valve V1 is a valve that is opened and closed when maintenance of the mixer 1, the filtration device 2, etc. is performed, and the valve V2 is a valve that is opened and closed for the purpose of stabilizing the supply of the flocculant to the mixer 1.

[0015] The mixer 1 is, for example, an in-line mixer that injects and mixes the flocculant supplied from the storage tank 3 through a line L3 into the raw water supplied from outside the container 10 through a line L1. Then, the mixer 1 supplies the generated mixed water to the filtration device 2 through a line L2. Note that the flocculant may be supplied in the line L1 and mixed with the raw water, or may be directly supplied to the mixer 1 and mixed with the raw water.

[0016] The filtration device 2 has, for example, a filtration membrane 2a that filters the mixed water supplied from the mixer 1 through a line L2. Specifically, the filtration device 2 has, for example, a plurality of filtration membranes 2a that filter the mixed water in parallel. The filtration membrane 2a is, for example, a ceramic membrane.

[0017] Then, the filtration device 2 supplies the filtered mixed water to the outside of the storage container 10.

[0018] The valve V3 is provided, for example, between the mixer 1 and the filtration device 2 (line L2), and is a valve capable of adjusting the supply amount of the mixed water to the filtration device 2.

[0019] That is, in the containment type water treatment system 100 in the first embodiment, different from general water purification facilities, the raw water is purified without using a mixing tank or the like for mixing the flocculant and the raw water. Specifically, the containment type water treatment system 100 performs the mixing of the flocculant and the raw water and the formation of flocs in the mixer 1 or in the mixer 1 and the line L2.

[0020] Thereby, the containment type water treatment system 100 can omit the space required for purifying the raw water, and can be miniaturized compared to general water purification facilities. Therefore, in the containment type water treatment system 100, for example, it can be mounted on a truck or the like and transported.

[0021] In addition, since the containment type water treatment system 100 can suppress the number and size of components compared to general water purification facilities, the cost can be suppressed compared to general water purification facilities.

[0022] Furthermore, the containment type water treatment system 100 can purify the raw water at a desired location by being mounted on a truck or the like and transported. Therefore, the containment type water treatment system 100 can supply domestic water even in places where it is not possible to construct a water purification plant due to economic reasons or restrictions on the construction site. Also, the containment type water treatment system 100 can supply domestic water to the necessary areas even, for example, during a disaster.

[0023] [Configuration example of the containment type water treatment system 100 in the first embodiment] Next, a configuration example of the storage type water treatment system 100 in the first embodiment will be described. Figures 2 to 11 are diagrams for explaining a configuration example of the storage type water treatment system 100 in the first embodiment. In the first embodiment, a jack that pulls up the components of the storage type water treatment system 100 stored in the container 10 will be described. Below, the casing of the filtration device 2 will be illustrated as an example of this component.

[0024] Specifically, Fig. 2 is a front cross-sectional view of the filtration device 2 and its surroundings in the housed water treatment system 100, and Fig. 3 is an AA cross-sectional view of the housed water treatment system 100. Also, Figs. 4 to 11 are partial enlarged views of the jack 22, the guide rail 23 and their surroundings.

[0025] The filtration device 2 has, for example, two rows of four casings, each row having four casings. That is, the filtration device 2 has, for example, eight casings. FIG. 2 illustrates one row of casings 21a, 21b, 21c, and 21d that can be viewed from the front. FIG. 3 illustrates casings 21a and 21e, which are casings arranged to the right in FIG. 2. Hereinafter, these will be collectively referred to simply as casing 21. Hereinafter, a case will be described in which the filtration device 2 has eight casings 21, but the filtration device 2 may have a number of casings 21 other than eight.

[0026] Each of the casings 21 has a filter membrane 2a therein as shown in Fig. 1. The casings 21 are arranged in groups of four casings arranged at equal intervals in the left-right direction as shown in Fig. 2 and Fig. 3. In the example shown in Fig. 2 and Fig. 3, two casing groups are arranged to overlap in the front-rear direction (depth direction in Fig. 2).

[0027] Further, as shown in FIG. 3 for example, the filtration device 2 has pipes 24a and 25a connected to a group of casings including the casing 21a, and pipes 24b and 25b connected to a group of casings including the casing 21e, respectively.

[0028] The pipes 24a and 24b are pipes for supplying mixed water to the casing 21 from the mixer 1 shown in FIG. 1, for example. That is, the pipes 24a and 24b are pipes corresponding to the line L2 described in FIG. 1, for example. Further, the pipes 25a and 25b are pipes for supplying the mixed water after being filtered by the filtration membrane 2a of the casing 21 to the outside of the container 10, for example. In the examples shown in FIGS. 2 and 3, the pipes 24a and 24b are arranged so as to overlap in the front-rear direction, and similarly, the pipes 25a and 25b are also arranged so as to overlap in the front-rear direction. Hereinafter, the pipes 24a and 24b are collectively referred to simply as the pipe 24, and the pipes 25a and 25b are collectively referred to simply as the pipe 25.

[0029] Furthermore, the filtration device 2 has a jack 22a for lifting each of the group of casings including the casing 21a upward, and a jack 22b for lifting each of the group of casings including the casing 21e upward, for example. The filtration device 2 also has a guide rail 23a for suspending the jack 22a movably and guiding it in the horizontal direction (the left-right direction in FIG. 2), and a guide rail 23b for suspending the jack 22b movably and guiding it in the horizontal direction. Hereinafter, the jacks 22a and 22b are collectively referred to simply as the jack 22, and the guide rails 23a and 23b are collectively referred to simply as the guide rail 23.

[0030] [Configuration example of the jack 22 and the guide rail 23] Next, a configuration example of the jack 22 and the guide rail 23 will be described.

[0031] First, a configuration example of the guide rail 23 before the jack 22 is attached will be described. FIG. 4 is a partially enlarged view around the guide rail 23 in FIG. 3. Further, FIG. 5 is a partially enlarged view around the guide rail 23 in FIG. 2.

[0032] The guide rail 23 has, for example, a support member 231 fixed to the ceiling surface of the storage container 10 and a rail member 232 laid on the lower surface of the support member 231.

[0033] As shown in FIGS. 4 and 5, the support member 231 is fixed, for example, so as to extend in the depth direction of FIG. 4 (the left - right direction of FIG. 5). Specifically, the support member 231 is provided, for example, on the ceiling surface of the storage container 10 so as to extend from at least the position where the casing 21 moves in the storage container 10 (for example, the position where the filter membrane 2a is replaced) to above all the casings 21 where the jack 22 performs lifting. And, as shown in FIG. 4, the cross - section in the longitudinal direction of the support member 231 has, for example, a rectangular shape.

[0034] Similar to the support member 231, the rail member 232 is laid, for example, so as to extend in the depth direction of FIG. 4 (the left - right direction of FIG. 5). Specifically, the rail member 232 is provided, for example, on the lower surface of the support member 231 so as to extend from at least the position where the casing 21 moves in the storage container 10 to above all the casings 21 where the jack 22 performs lifting. And, as shown in FIG. 4, the cross - section in the longitudinal direction of the rail member 232 has a shape including convex portions 2321 and 2322 that project outward on both side surfaces.

[0035] Next, a configuration example of the jack 22 and the guide rail 23 when the jack 22 is attached to the guide rail 23 will be described. FIG. 6 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 3. Further, FIG. 7 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 2.

[0036] As shown in FIGS. 6 and 7, the jack 22 is in physical contact with the rail member 232 and can move along the rail member 232 by having a fitting member that is movable relative to the rail member 232.

[0037] Specifically, the jack 22 has, for example, two fitting members that fit with the convex portion 2321 of the rail member 232 and two fitting members that fit with the convex portion 2322 of the rail member 232. In the example shown in FIG. 6, a fitting member 221a that fits with the convex portion 2321 of the rail member 232 and a fitting member 221b that fits with the convex portion 2322 of the rail member 232 are illustrated. Also, in the example shown in FIG. 7, a fitting member 221a that fits with the convex portion 2321 (see FIG. 6) of the rail member 232 and a fitting member 221c are illustrated. As described above, in FIGS. 6 and 7, three fitting members (fitting members 221a, 221b, and 221c) are illustrated, but another fitting member is disposed on the depth direction side of the fitting member 221c in FIG. 7, and its illustration is omitted.

[0038] Returning to FIG. 6, further, the jack 22 has a support member 222 to which the fitting member 221a and the fitting member 221b are fixed, a first pivot member 223a fixed to the lower surface of the support member 222, a first upper arm member 224a having one end pivotally attached to the first pivot member 223a, and a second upper arm member 224b having one end pivotally attached to the first pivot member 223a.

[0039] Also, the jack 22 has, for example, a second pivot member 223b located downward of the first pivot member 223a, a first lower arm member 224c having one end pivotally attached to the second pivot member 223b, a second lower arm member 224d having one end pivotally attached to the second pivot member 223b, a first shaft 225a that pivotally connects the other ends of the first upper arm member 224a and the first lower arm member 224c, and a second shaft 225b that pivotally connects the other ends of the second upper arm member 224b and the second lower arm member 224d.

[0040] Further, the jack 22 includes, for example, a threaded rod 226, a screwing block (not shown) attached to the second shaft 225b for screwing with the threaded rod 226, a support block 227 coupled to the threaded rod 226 so as to be rotatable and non - movable in the axial direction, a rotary input member 228 attached to one end of the threaded rod 226 on the support block 227 side, and a fastening member 229 (hereinafter also referred to as the first fastening plate 229) fixed to the lower surface of the second pivot member 223b. The fastening member 229 is, for example, a plate - like member extending in the horizontal direction (the front - rear direction in FIG. 2 and the left - right direction in FIG. 3).

[0041] Then, the operator, for example, rotates the rotary input member 228 to move the screwing block toward one end side of the threaded rod 226, narrowing the distance between the first pivot member 223a and the second pivot member 223b. That is, the operator, for example, rotates the rotary input member 228 to convert the rotational movement of the threaded rod 226 into the lifting and lowering movement of the casing 21, as will be described later. Thereby, the operator can also perform the desired lifting of the casing 21 inside the container 10.

[0042] Also, the operator, for example, rotates the rotary input member 228 in the direction opposite to the case of lifting the casing 21 to move the screwing block toward the other end side of the threaded rod 226, widening the distance between the first pivot member 223a and the second pivot member 223b. Thereby, the operator can perform the desired lowering of the casing 21.

[0043] Next, the jack 22 and the casing 21 when fixing the casing 21 to the jack 22 will be described. FIG. 8 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 3, and is a view of the state before the casing 21 and the jack 22 are fixed. Further, FIG. 9 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 2, and is a view of the state before the casing 21 and the jack 22 are fixed. Further, FIG. 10 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 3, and is a view of the state after the casing 21 and the jack 22 are fixed. Further, FIG. 11 is a partially enlarged view around the jack 22 and the guide rail 23 in FIG. 2, and is a view of the state after the casing 21 and the jack 22 are fixed.

[0044] The casing 21 has, for example, a casing body 211 and a fastening member 212 provided at the upper end of the casing body 211 (hereinafter also referred to as the second fastening plate 212). The fastening member 212 is, for example, a plate-like member extending in the horizontal direction (the front-rear direction in FIG. 2 and the left-right direction in FIG. 3).

[0045] Then, when an operator fixes the casing 21 to the jack 22, for example, as shown in FIGS. 8 and 9, the fastening member 229 of the jack 22 and the fastening member 212 of the casing 21 are overlapped.

[0046] Thereafter, as shown in FIGS. 10 and 11, the operator fixes the fastening member 229 of the jack 22 and the fastening member 212 of the casing 21 in an overlapped state, for example, by using the fixing member 26.

[0047] The fixing member 26 has, for example, a U-shaped fixing member main body 261 capable of sandwiching the overlapped fastening members 229 and 212 from above and below, and one or more anti-detachment screws 262 capable of tightening the fixing member main body 261 in the state of sandwiching the fastening members 229 and 212 from above and below. Then, the fixing member 26 fixes the overlapped fastening members 229 and 212 by tightening the fixing member main body 261 in the state of sandwiching the fastening members 229 and 212 from above and below using one or more anti-detachment screws 262.

[0048] Thereby, the operator can safely lift the casing 21 by the jack 22. Note that, without using the fixing member main body 261, through holes may be formed in the overlapped fastening members 229 and 212, and bolts may be inserted into these through holes and fixed with nuts.

[0049] As described above, the housing type water treatment system 100 in the present embodiment has a jack 22 for lifting each casing 21 upward, and a guide rail 23 for suspending the jack 22 movably and guiding it in the horizontal direction (the front-rear direction in FIG. 2 and the left-right direction in FIG. 3).

[0050] That is, for example, when replacing the filtration membrane 2a during regular maintenance or the like, the operator needs to remove the casing 21 that houses the filtration membrane 2a and move it to a predetermined position (for example, a position where the replacement work of the filtration membrane 2a is possible).

[0051] However, for example, when the container 10 is a portable container or the like, there may be a case where a sufficient space (particularly, the space between the ceiling surface of the container 10 and the filtration device 2) for installing a crane or the like for lifting the casing 21 in the container 10 cannot be secured.

[0052] Therefore, in the accommodation-type water treatment system 100 according to the present embodiment, for example, it has a guide rail 23 provided on the ceiling surface of the container 10 and a jack 22 that is movable by being guided by the guide rail 23. And in the accommodation-type water treatment system 100 according to the present embodiment, the casing 21 is lifted by the jack 22, and further, the casing 21 is moved to a necessary position by the guidance of the guide rail 23.

[0053] Thereby, in the accommodation-type water treatment system 100 according to the present embodiment, for example, even when it is not possible to secure sufficient space for installing a crane or the like in the container 10, it becomes possible to lift and move the casing 21, and it becomes possible to replace the filtration membrane 2a.

[0054] Also, in the accommodation-type water treatment system 100 according to the present embodiment, for example, after replacing the filtration membrane 2a, it becomes possible to return the casing 21 to the installation position (original position) in the container 10 by using the jack 22 and the guide rail 23.

[0055] In the above example, the case where two sets of guide rails 23 extending in the left-right direction in FIG. 2 are provided and the jacks 22 installed on each guide rail 23 move four casings 21 has been described. However, in the container 10, for example, four sets of guide rails 23 extending in the depth direction (front-rear direction in FIG. 3) in FIG. 2 may be provided, and the jacks 22 installed on each guide rail 23 may move two casings 21 each.

[0056] [Method for determining the injection amount of the flocculant] Next, a method for determining the injection amount of the flocculant into the mixer 1 will be described.

[0057] FIG. 12 is a graph for explaining a method for determining the injection amount of the flocculant into the mixer 1. In the graph shown in FIG. 12, the horizontal axis corresponds to the turbidity of the raw water, and the vertical axis corresponds to the injection amount of the flocculant per unit time.

[0058] The injection amount of the flocculant into the mixer 1 (the supply amount of the flocculant in the valves V1 and V2) is determined, for example, according to the turbidity of the raw water supplied from the outside to the container-type water treatment system 100. Specifically, the injection amount of the flocculant into the mixer 1 is determined according to the turbidity of the raw water measured by a turbidimeter (not shown) installed inside or outside the container 10, for example.

[0059] More specifically, as shown in FIG. 12, for example, when the turbidity of the raw water is equal to or less than the first turbidity, the operator adjusts the injection amount of the flocculant by the pump P so that the injection amount per unit time becomes constant (the first injection amount). Also, for example, when the turbidity of the raw water is greater than the first turbidity and less than or equal to the second turbidity, the operator adjusts the injection amount of the flocculant by the pump P so that the injection amount per unit time increases according to the increase in the turbidity of the raw water. Further, for example, when the turbidity of the raw water is greater than or equal to the second turbidity, the operator adjusts the injection amount of the flocculant by the pump P so that the injection amount per unit time becomes constant (the second injection amount).

[0060] In this regard, when the turbidity of the raw water is greater than the first turbidity and less than or equal to the second turbidity, in the example shown in FIG. 12, the adjustment is made so that the increase amount of the injection amount per unit time with respect to the turbidity of the raw water becomes constant, but the injection amount per unit time with respect to the turbidity of the raw water may increase at a pace other than constant.

[0061] Note that the determination of the injection amount of the flocculant into the mixer 1 may be performed by a control device (not shown) installed inside or outside the container 10, for example. The control device is a computer having, for example, a CPU (Central Computing Unit) and a memory. Specifically, the control device may perform a process of determining the injection amount of the flocculant into the mixer 1 by using a signal transmitted from a turbidimeter (not shown), for example.

[0062] Also, the opening and closing of each of valves V1 and V2 may be automatically performed by, for example, a valve opening / closing device (not shown) installed in the storage container 10. Specifically, the valve opening / closing device may open and close valves V1 and V2 such that a flocculant corresponding to the injection amount indicated by a signal transmitted from a control device is injected into the mixer 1.

[0063] [Contained water treatment system 200 in the second embodiment] Next, the contained water treatment system 200 in the second embodiment will be described.

[0064] FIG. 13 is a diagram for explaining a configuration example of the contained water treatment system 200 in the second embodiment. Hereinafter, only the differences from the contained water treatment system 100 described in the first embodiment will be described.

[0065] Generally, in water purification facilities, by injecting a flocculant into raw water, suspended solids contained in the raw water are aggregated to form flocs. Then, in water purification facilities, the formed flocs are removed by sedimentation to purify the raw water.

[0066] Here, in the above-described water purification facilities, for example, the GT value is used as a criterion for determining whether good flocs are formed. The GT value is a value calculated by multiplying a G value indicating the stirring intensity of the raw water and the flocculant and a T value indicating the stirring duration of the raw water and the flocculant.

[0067] In this regard, in general water purification facilities, for example, since the raw water and the flocculant are mixed in a mixing tank, it is possible to sufficiently ensure the GT value.

[0068] In contrast, in the containment type water treatment system 100 described in the first embodiment, since there is no mixing tank due to the need to miniaturize the equipment, sufficient time cannot be ensured before the mixed water reaches the filtration device 2, and there may be a case where the stirring time (T value) of the raw water and the flocculant cannot be sufficiently ensured. Therefore, in the containment type water treatment system 100 in the first embodiment, there may be a case where the mixed water in which the flocculant is not sufficiently mixed reaches the filtration device 2, and good flocs may not be formed.

[0069] Therefore, in the containment type water treatment system 200 in the second embodiment, as shown in FIG. 13, as a pump for supplying the flocculant to the mixer 1, a pump P2 in which the change in the injection amount of the flocculant per unit time is below a predetermined value is used. Specifically, the pump P2 is, for example, a non-pulsating type pump.

[0070] That is, for example, when a pump with a large change in the injection amount of the flocculant per unit time (for example, a pulsating type pump) is used as the pump for supplying the flocculant to the mixer 1, there may be unevenness in the injection pace of the flocculant to the mixer 1. In this regard, in an environment where the T value can be sufficiently ensured, such as in a water purification facility having a mixing tank, it is possible to generate good flocs even when there is unevenness in the injection pace of the flocculant. However, in an environment where the T value cannot be sufficiently ensured, good flocs may not be formed before reaching the filtration device 2. Therefore, in the containment type water treatment system 200 in the second embodiment, as the pump for supplying the flocculant to the mixer 1, a pump P2 with less unevenness in the injection pace of the flocculant is used.

[0071] As a result, the containment type water treatment system 200 can suppress the residence time required for floc formation. Therefore, even in an environment where the T value cannot be sufficiently ensured, the containment type water treatment system 200 can suppress the occurrence of a case where the mixed water in which the flocculant is not sufficiently mixed reaches the filtration device 2, and can form good flocs.

[0072] [Contained Water Treatment System 300 in the Third Embodiment] Next, the contained water treatment system 300 in the third embodiment will be described.

[0073] FIG. 14 is a diagram for explaining a configuration example of the contained water treatment system 300 in the third embodiment. Hereinafter, only the differences from the contained water treatment system 100 described in the first embodiment and the contained water treatment system 200 described in the second embodiment will be described.

[0074] As shown in FIG. 14, the water treatment system 20 includes a pressure gauge 4a (hereinafter also referred to as the first pressure gauge 4a) and a pressure gauge 4b (hereinafter also referred to as the second pressure gauge 4b). The water treatment system 20 also has a valve V4 for adjusting the supply amount of raw water to the mixer 1.

[0075] The pressure gauge 4a is installed, for example, between the valve V4 and the mixer 1 (line L1) and measures the flow pressure (pressure) of the raw water supplied to the mixer 1.

[0076] The pressure gauge 4b is installed, for example, in the filtration device 2 and measures the flow pressure of the mixed water in the front stage of the filtration device 2 or the flow pressure difference (pressure difference) of the mixed water in the front and rear stages of the filtration device 2. Hereinafter, the pressure gauge 4b will be described as a single pressure gauge, but the pressure gauge 4b may be composed of, for example, a pressure gauge for measuring the flow pressure of the mixed water in the front stage of the filtration device 2 and a pressure gauge for measuring the flow pressure of the mixed water in the rear stage of the filtration device 2.

[0077] The valve V4 is a valve capable of adjusting the supply amount of raw water based on the flow pressure measured by the pressure gauge 4a or the pressure gauge 4b. Specifically, the operator adjusts the supply amount of the raw water supplied to the mixer 1 and adjusts the flow pressure in the front stage of the valve V3 by, for example, opening and closing the valve V4.

[0078] Note that the determination of the supply amount of raw water by valve V4 may be performed, for example, by a control device (not shown) installed in the storage container 10. Specifically, the control device may perform a process of determining the supply amount of raw water by valve V4 by using, for example, a signal transmitted from the pressure gauge 4a or a signal transmitted from the pressure gauge 4b.

[0079] Also, the opening and closing of valve V4 may be automatically performed, for example, by a valve opening / closing device (not shown) installed in the storage container 10. Specifically, the valve opening / closing device may open and close valve V4 so that, for example, raw water corresponding to the supply amount indicated by the signal transmitted from the control device is supplied to the mixer 1.

[0080] [Method for Adjusting the Supply Amount of Raw Water by Valve V4] Next, a method for adjusting the supply amount of raw water by valve V4 will be described.

[0081] Figs. 15 to 18 are diagrams for explaining a method for adjusting the supply amount of raw water by valve V4. Hereinafter, a case where the adjustment of the supply amount of raw water by valve V4 is manually performed will be described.

[0082] As shown in Fig. 15, for example, when the first confirmation timing is reached, the operator acquires the flow pressure of the mixed water supplied to valve V3 from the pressure gauge 4a (YES in S11, S12). The first confirmation timing may be, for example, the timing when a predetermined time has elapsed after the supply of the mixed water to the filtration membrane 2a is first started. Also, the first confirmation timing may be, for example, the timing when a predetermined time has elapsed after the cleaning of the filtration membrane 2a is performed.

[0083] Then, the operator determines whether or not the flow pressure acquired in the process of S12 is equal to or greater than the first threshold value (S13).

[0084] As a result, when it is determined that the flow pressure obtained in the process of S12 is equal to or higher than the first threshold value (YES in S14), the operator decreases the supply amount of raw water by the valve V4 (S15). Specifically, the operator decreases the supply amount of raw water, for example, by manually closing the valve V4.

[0085] That is, in the case of immediately after the start of supply of the mixed water to the filtration membrane 2a or immediately after the cleaning of the filtration membrane 2a, as shown in FIG. 16(A), since the clogging of the filtration membrane 2a is small, the flow pressure of the mixed water in the upstream stage of the filtration membrane 2a (filtration device 2) is in a low state. Therefore, in this case, when the flow pressure in the upstream stage of the valve V3 is high, the flow pressure difference between the upstream stage and the downstream stage of the valve V3 becomes large, which may cause a failure of the valve V3 or the like. Specifically, when the flow pressure difference between the upstream stage and the downstream stage of the valve V3 is not within a predetermined range, for example, cavitation is likely to occur in the valve V3, and abnormal noise and failure are likely to occur.

[0086] Therefore, as shown in FIG. 16(B), when the flow pressure measured by the pressure gauge 4a is equal to or higher than the first threshold value at the timing immediately after the start of supply of the mixed water to the filtration membrane 2a or immediately after the cleaning of the filtration membrane 2a, the operator determines that the flow pressure difference between the upstream stage and the downstream stage of the valve V3 is likely to be large, and decreases the supply amount of raw water by the valve V4 by closing the valve V4. That is, in this case, the operator performs the closing control of the valve V4 to control the flow pressure difference between the upstream stage and the downstream stage of the valve V3 to be within a predetermined range.

[0087] Thereby, the containment type water treatment system 300 can prevent the occurrence of a failure or the like in the valve V3.

[0088] In addition, as will be described later, the containment type water treatment system 300 can suppress the supply amount of the mixed water to the filtration device 2 in order to be able to increase the supply amount of the mixed water to the filtration device 2 at a necessary timing.

[0089] Then, as shown in FIG. 17, for example, when the second confirmation timing arrives, the operator obtains from the pressure gauge 4b the pressure difference between the flow pressure of the mixed water supplied to the filtration device 2 (the flow pressure in the front stage of the filtration device 2) and the flow pressure of the mixed water supplied from the filtration device 2 (the flow pressure in the rear stage of the filtration device 2) (YES in S21, S22). The second confirmation timing may be, for example, the timing when a predetermined time has elapsed after the process of S14 is performed.

[0090] Then, the operator determines whether or not the pressure difference obtained in the process of S22 is equal to or greater than the second threshold value (S23).

[0091] As a result, when it is determined that the pressure difference obtained in the process of S22 is equal to or greater than the second threshold value (YES in S24), the operator increases the supply amount of the raw water by the valve V4 (S25). Specifically, the operator increases the supply amount of the raw water, for example, by manually opening the valve V4.

[0092] That is, when the supply of the mixed water to the filtration membrane 2a continues for a long time, as shown in FIG. 18(A), the clogging of the filtration membrane 2a becomes large, and the flow pressure of the mixed water in the front stage of the filtration device 2 increases. Therefore, for example, when it is necessary to maintain the filtration amount of the mixed water in the filtration device 2, it is necessary to increase the flow pressure in the front stage of the valve V3 by increasing the supply amount of the mixed water to the filtration device 2 over time.

[0093] In this regard, for example, by separately providing a pump for increasing the supply amount of the raw water to the mixer 1, it becomes possible to increase the supply amount of the mixed water to the filtration device 2. However, when the space inside the storage container 10 in the storage type water treatment system 300 is not sufficient, it may not be possible to install a pump for increasing the supply amount of the raw water to the mixer 1 in the storage container 10.

[0094] Therefore, in the containment type water treatment system 300 according to the present embodiment, when the flow pressure difference measured by the pressure gauge 4b becomes equal to or greater than the second threshold value, as shown in FIG. 18(B), it is determined that the clogging of the filtration membrane 2a has increased, and the valve V4 is opened to increase the supply amount of raw water by the valve V4. That is, in this case, the operator controls the opening of the valve V4 so that the flow pressure difference between the flow pressure in the front stage and the flow pressure in the rear stage of the valve V3 is within a predetermined range.

[0095] As a result, the containment type water treatment system 300 can increase the supply amount of the mixed water to the filtration device 2 without separately providing a pump for increasing the supply amount of the raw water to the mixer 1. Therefore, the containment type water treatment system 300 can maintain the filtration amount of the mixed water in the filtration device 2 even when the flow pressure difference in the filtration device 2 increases over time.

Explanation of Signs

[0096] 1: Mixer 2: Filtration device 2a: Filtration membrane 3: Storage tank 4a: Pressure gauge 4b: Pressure gauge 10: Container 20: Water treatment system 21: Casing 21a: Casing 21b: Casing 21c: Casing 21d: Casing 21e: Casing 211: Casing body 212: Fastening member 22: Jack 22a: Jack 22b: Jack 221a: Fitting member 221b: Fitting member 221c: Fitting member 222: Support member 223a: First pivot member 223b: Second pivot member 224a: First upper arm member 224b: Second upper arm member 224c: First lower arm member 224d: Second lower arm member 225a: First shaft 225b: Second shaft 226: Screw rod 227: Support block 228: Rotating input member 229: Fastening member 23: Guide rail 23a: Guide rail 23b: Guide rail 231: Support member 232: Rail body 2321: Protrusion 2322: Protrusion 24: Pipe 24a: Pipe 24b: Pipe 25: Pipe 25a: Pipe 25b: Pipe 26: Fixing member 261: Fixing member body 262: Anti - detachment screw 100: Contained water treatment system 200: Contained water treatment system 300: Contained water treatment system L1: Line L2: Line L3: Line P1: Pump P2: Pump V1: Valve V2: Valve V3: Valve V4: Valve

Claims

1. A transportable container, a water treatment system accommodated in the container, a jack for pulling up components of the water treatment system stored in the container upward, and a guide rail for movably suspending the jack and guiding it horizontally, and the jack performs pulling up of the components by narrowing the distance between the upper end portion and the lower end portion of the jack, a container-type water treatment system.

2. The guide rail movably suspends the upper end portion of the jack and guides it horizontally, and the lower end portion of the jack and the upper end portion of the component can be fixed by tightening with a fixing member. The container-type water treatment system according to Claim 1.

3. The jack performs pulling down of the component by widening the distance between the upper end portion and the lower end portion of the jack. The container-type water treatment system according to Claim 1.

4. The water treatment system includes at least a filtration device for filtering water to be treated, and the component is the filtration device. The container-type water treatment system according to Claim 2.

5. The guide rail is laid on the ceiling surface of the container. The container-type water treatment system according to Claim 1.

6. The jack includes a first fastening plate that extends horizontally at the lower end portion, the filtration device includes a second fastening plate that extends horizontally at the upper end portion, and the first fastening plate and the second fastening plate can be fixed by tightening with the fixing member. The container-type water treatment system according to Claim 4.

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