Pipe with filter, pipe assembly with filter, pipe system with filter, and water purification facility

Abstract

To provide a pipe with a filter capable of adjusting adsorption performance for adsorbing various kinds of components contained in sent water.SOLUTION: According to an embodiment, a pipe with a filter includes a pipe body insertable into and removable from a pipe in a water purification facility, and one or a plurality of filters arranged in the pipe body and adsorbing a substance contained in water. The peripheral wall of the pipe body is provided with a window part as an edge part for forming a through-hole for increasing and decreasing the number of filters arranged in the pipe body, by taking in and out the filters to and from the pipe body in response to a state of water on the upstream side of the pipe body. The pipe body is provided with an opening / closing portion that opens and closes the through-hole of the window portion.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] FIELD OF THE INVENTION Embodiments of the present invention relate to filtered piping, filtered piping assemblies, filtered piping systems, and water purification systems. [Background technology]

[0002] Currently, in order to comply with the strengthened water quality standards, many local government waterworks departments are implementing advanced water purification treatments, which are also effective in preventing unpleasant odors and tastes.

[0003] For example, the removal of dissolved organic matter and odorous components using activated carbon adsorption is expected to see further demand in the future in order to ensure a safe and secure water supply. Treatment methods that use activated carbon generally involve contact filtration equipment and coagulation sedimentation equipment, which require a large installation area. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 63-98794 [Patent Document 2] Japanese Patent Application Publication No. 10-263566 [Patent Document 3] Patent Publication No. 2021-65868 [Patent Document 4] Japanese Patent Application Publication No. 2018-183745 [Patent Document 5] Japanese Patent Application Laid-Open No. 2002-28649 [Patent Document 6] Japanese Patent Application Laid-Open No. 2001-246384 Summary of the Invention

[0005] The problem that the present invention aims to solve is to provide a filter-equipped pipe that can adjust the adsorption performance for adsorbing various components contained in water that is delivered to it, a filter-equipped pipe assembly that has such a filter-equipped pipe, a filter-equipped pipe system that has such a filter-equipped pipe, and a water purification facility that includes such a filter-equipped pipe. [Means for solving the problem]

[0006] According to an embodiment, the filter-equipped pipe includes a pipe body that can be inserted into or removed from a pipe in a water purification facility, and one or more filters that are disposed within the pipe body and adsorb substances contained in the water. The peripheral wall of the pipe body is provided with a window portion as an edge portion that forms through holes that allow filters to be inserted or removed from the pipe body depending on the state of the water upstream of the pipe body and that increase or decrease the number of filters disposed within the pipe body. The pipe body is provided with an opening / closing portion that opens and closes the through holes of the window portion. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram showing a water intake plant according to an embodiment, a water purification facility for treating raw water to produce clean water and distributing the clean water, and showing the raw water treatment process. [Figure 2] 1 is a schematic perspective view showing a state in which a filtered piping assembly having filtered piping is disposed in a pipeline; [Figure 3] Schematic longitudinal cross-sectional view of a pipe with a filter. [Figure 4] 4 is a schematic longitudinal cross-sectional view of the filtered piping shown in FIG. 3 and a schematic diagram showing a filtered piping assembly in combination with a gate valve (not a cross-sectional view). [Figure 5] FIG. 2 is a schematic perspective view of each filter. DETAILED DESCRIPTION OF THE INVENTION

[0008] Preferred embodiments will now be described with reference to the drawings.

[0009] FIG. 1 is a schematic diagram showing a water intake plant 12 and a water purification facility 14 for treating raw water to produce clean water and distributing the clean water, as well as showing the raw water treatment process.

[0010] At the water intake station 12, raw water is taken from a water source such as a river and sent to a water purification facility 14 through a pipeline 12a.

[0011] The water purification facility 14, by way of example, includes, in order from upstream to downstream, a receiving well 22, a mixing basin 24, a flocculation basin 26, a sedimentation basin 28, a filtration basin 30, a chlorine mixing basin 32, a purified water basin 34, and a distribution pump 36. The receiving well 22, the mixing basin 24, the flocculation basin 26, the sedimentation basin 28, the filtration basin 30, the chlorine mixing basin 32, and the purified water basin 34 are used as a water purification treatment section. The functions of the receiving well 22, the mixing basin 24, the flocculation basin 26, the sedimentation basin 28, the filtration basin 30, the chlorine mixing basin 32, the purified water basin 34, and the distribution pump 36 will be described later.

[0012] The water purification facility 14 also includes a pipeline 21 between the intake facility 12 and the receiving well 22 of the water purification facility 14, a pipeline 23 between the receiving well 22 and the mixing basin 24, a pipeline 25 between the mixing basin 24 and the flocculation basin 26, a pipeline 27 between the flocculation basin 26 and the sedimentation basin 28, a pipeline 29 between the sedimentation basin 28 and the filtration basin 30, a pipeline 31 between the filtration basin 30 and the chlorine mixing basin 32, a pipeline 33 between the chlorine mixing basin 32 and the clean water basin 34, and a pipeline 35 between the clean water basin 34 and the distribution pump 36.

[0013] The water purification system 14 according to this embodiment may use a filter-equipped piping assembly 40 in one or more of the appropriate pipelines 21, 23, 25, 27, 29, 31, 33, and 35. That is, the filter-equipped piping assembly 40 may be provided in one or more of the following locations: the pipeline 21 between the water intake facility 12 and the receiving well 22 of the water purification system 14; the pipeline 23 between the receiving well 22 and the mixing basin 24; the pipeline 25 between the mixing basin 24 and the flocculation basin 26; the pipeline 27 between the flocculation basin 26 and the settling basin 28; the pipeline 29 between the settling basin 28 and the filtration basin 30; the pipeline 31 between the filtration basin 30 and the chlorine mixing basin 32; the pipeline 33 between the chlorine mixing basin 32 and the clear water basin 34; and the pipeline 35 between the clear water basin 34 and the distribution pump 36. To this end, the water purification system 14 includes a filter and piping assembly 40 having filter and piping 50, described below, in one or more of the lines 23, 25, 27, 29, 31, 33, and 35.

[0014] However, it is preferable that the filter-equipped piping assembly 40 is not actually provided in a pipeline that may impair the function of an appropriate chemical. Therefore, in this embodiment, the filter-equipped piping assembly 40 is preferably provided in, for example, one or more of the pipelines 21, 29, 31, 33, and 35. It is preferable that the portions of the pipelines 21, 29, 31, 33, and 35 where the filter-equipped piping assembly 40 is provided are exposed above ground and not buried underground. On the other hand, it is preferable that the filter-equipped piping assembly 40 is not provided in the pipelines 23, 25, and 27. Therefore, the entire pipelines 23, 25, and 27 may be buried underground.

[0015] 2 is a schematic perspective view showing, as an example, a state in which a filtered piping assembly 40 having a filtered pipe 50 is disposed in a pipeline 21. Therefore, here, an example in which the filtered piping assembly 40 is provided in the pipeline 21 as shown in FIGS. 1 and 2 will be described. The pipeline 21 in which the filtered piping assembly 40 is provided is preferably branched into multiple branches, for example, into two branches, and a filtered piping assembly 40 is provided in each of the branches.

[0016] The filter-equipped piping assembly 40 includes a filter-equipped piping 50 and gate valves 60 disposed on the upstream and downstream sides of the filter-equipped piping 50, respectively.

[0017] Figure 3 is a schematic longitudinal cross-sectional view of a filter-equipped pipe 50. Figure 4 is a schematic diagram showing a filter-equipped pipe assembly 40 that combines the schematic longitudinal cross-sectional view of the filter-equipped pipe 50 shown in Figure 3 with a gate valve 60 (not a cross-sectional view).

[0018] Fig. 5 is a schematic perspective view of each filter 54. Although three filters 54 are shown lined up in Fig. 5, the number of filters 54 used in the filtered pipe 50 may be one or more.

[0019] 3, the filter-equipped pipe 50 is arranged so as to be insertable into and detachable from the pipeline, i.e., the pipe in the water purification equipment 14. The filter-equipped pipe 50 includes a pipe body 52 which is insertable into and detachable from the pipe in the water purification equipment 14, and one or more filters 54 which are arranged in the pipe body 52 and which adsorb various components such as dissolved organic substances and odor components contained in the water sent from the pipeline 21 into the pipe body 52.

[0020] 5, the filter 54 has a generally disk-like appearance. A ceramic filter (activated carbon filter) in which activated carbon is supported on the surface of a porous ceramic material by, for example, firing, is preferably used as the filter 54. The surface of the filter 54 that intersects with the water flow direction, preferably perpendicular to it, is preferably formed in a honeycomb shape such as a hexagon or octagon. A zeolite filter is also suitably used as the filter 54. The filter 54 is not limited to an activated carbon filter or a zeolite filter, as long as it is capable of adsorbing substances contained in the raw water, etc. The filter 54 is formed in a plate shape having a thickness sufficient to withstand the appropriate water pressure of the raw water, etc. passing through the tubular body 52. ​​The filter 54 may have an external shape that is, for example, substantially disc-shaped as shown in FIG. 5, or may be formed in an appropriate polygonal shape such as an octagon or a hexagon.

[0021] The pipe body 52 is preferably cylindrical and may be made of a metal material such as stainless steel, or may be made of a resin material such as vinyl chloride.

[0022] The pipe 52 has a cylindrical main body 52a and flanges 52b protruding radially outward from both ends of the pipe 52. The flanges 52b of the pipe 52 are fixed by bolts to a flange 64 (described later) of the gate valve 60. The gap between the flanges 52b and 64 is sealed by an O-ring (not shown). The pipe 52 may be connected to another pipe 62 of the gate valve 60 (described later) by a structure other than the flange 52b.

[0023] A window portion 56 is provided in the peripheral wall of the tubular body 52, forming a through hole that allows the filters 54 to be placed in and removed from the tubular body 52 and that increases or decreases the number of filters 54 placed in the tubular body 52. ​​The window portion 56 is formed in the peripheral wall of the tubular body 52 as, for example, the edge of a substantially rectangular through hole.

[0024] The window portion 56 is provided with an opening / closing portion 58 that opens and closes the through-hole of the window portion 56. The opening / closing portion 58 is used as a cover for the through-hole of the window portion 56. For this reason, the through-hole of the window portion 56 is opened and closed by the opening / closing portion 58. The opening / closing portion 58 is preferably rotatable, for example, like a hinge, with an axis along the central axis of the pipe body 52. ​​The opening / closing portion 58 is formed so as to withstand the water pressure of the raw water flowing inside the pipe body 52 when the through-hole of the window portion 56 is closed, and to prevent water leakage between the through-hole of the window portion 56 and the opening / closing portion 58.

[0025] The inner circumferential surface of the main body 52a of the tubular body 52 is formed with a plurality of protrusions 53 that form a plurality of slots for supporting one or more filters 54 through the through holes of the window portion 56. The distance between adjacent protrusions 53 along the axial direction of the main body 52a of the tubular body 52 is greater than the height of the filters 54. The plurality of protrusions 53 may be integrally formed on the inner circumferential surface of the tubular body 52 or may be appropriately fixed to the inner circumferential surface of the tubular body 52. ​​Each of the plurality of protrusions 53 is formed in a substantially C-shape. The plurality of protrusions 53 may be formed continuously in the circumferential direction or discretely in the circumferential direction. Adjacent protrusions 53 in the axial direction of the main body 52a of the tubular body 52 form a slot into which the filter 54 can be inserted and removed. Three or more protrusions 53 aligned in the axial direction of the main body 52a of the tubular body 52 form two or more slots. In the example shown in FIGS. 3 and 4, seven protrusions 53 aligned in the axial direction of the main body 52a of the tubular body 52 form six slots. All of the slots are exposed to the outside through the through-holes of the window portion 56. Therefore, the filter 54 can be inserted into and removed from the slots through the through-holes of the window portion 56 of the tubular body 52.

[0026] A plurality of protrusions 59 are formed on the inner circumferential surface of the opening / closing portion 58. The distance between adjacent protrusions 59 along the axial direction of the main body 52a of the tubular body 52 is preferably equal to the distance between adjacent protrusions 53 along the axial direction of the main body 52a of the tubular body 52, and the protrusions 59 preferably face the protrusions 53 with respect to the central axis of the main body 52a of the tubular body 52. ​​The plurality of protrusions 59 may be integrally formed on the inner circumferential surface of the opening / closing portion 58 or may be appropriately fixed to the inner circumferential surface of the opening / closing portion 58. The plurality of protrusions 59 may be formed continuously in the circumferential direction or discretely in the circumferential direction. Adjacent protrusions 59 along the axial direction of the main body 52a of the tubular body 52, together with the protrusions 53 on the inner circumferential surface of the main body 52a of the tubular body 52, form a slot into which the filter 54 can be inserted and removed. Three or more protrusions 59 aligned in the axial direction of the main body 52a of the tubular body 52 form two or more slots. In the example shown in FIGS. 3 and 4, six slots are formed by seven protrusions 59 arranged in the axial direction of the main body 52a of the tubular body 52.

[0027] 4 includes a pipe 62, a flange 64, and a handle 66. When the handle 66 is operated, the flow path in the pipe 62 can be opened and closed using a valve element (not shown).

[0028] 2, the flange 64 of the gate valve 60 on the upstream side of one filter-equipped piping assembly 40 is fixed with bolts to the flange 21a3 of one pipeline 21a1. The flange 64 of the gate valve 60 on the downstream side of one filter-equipped piping assembly 40 is fixed with bolts to the flange 21a4 of pipeline 21a2. The flange 64 of the gate valve 60 on the upstream side of the other filter-equipped piping assembly 40 is fixed with bolts to the flange 21b3 of the other pipeline 21b1. The flange 64 of the gate valve 60 on the downstream side of the other filter-equipped piping assembly 40 is fixed with bolts to the flange 21b4 of pipeline 21b2.

[0029] 1, a sensor 70, such as a turbidity meter, is disposed upstream of the filter-equipped piping assembly 40 to acquire the state of raw water taken in at the water intake station 12 and flowing through the pipeline 21. The sensor 70 acquires the state of the raw water in real time. The filter-equipped piping assembly 40 or the filter-equipped piping 50, and the sensor 70, which is disposed upstream of the pipe 52 and acquires the state of the water flowing through the pipe 52, constitute a filter-equipped piping system.

[0030] Next, the treatment process at the water intake plant 12 and the water purification facility 14 for distributing purified water will be described.

[0031] Before raw water is taken in at the water intake plant 12, the condition of the raw water is estimated in advance based on the weather and other factors upstream of the river. In addition, the real-time condition of the raw water from the water intake plant 12 is acquired by a sensor 70. The pipeline 21 is assumed to be, for example, bifurcated and installed side by side.

[0032] That is, the pipeline 21 has two bifurcated pipelines 21a1, 21b1 connected to pipeline 12a extending from the water intake facility 12, and one filter-equipped piping assembly 40 is provided on flange 21a3 (see FIG. 2) of one pipeline 21a1, and the other filter-equipped piping assembly 40 is provided on flange 21b3 (see FIG. 2) of the other pipeline 21b1. The downstream side of one filter-equipped piping assembly 40 is connected to flange 21a4 (see FIG. 2) of one pipeline 21a2 of two bifurcated pipelines 21a2, 21b2 connected to the receiving well 22. The downstream side of the other filter-equipped piping assembly 40 is connected to flange 21b4 (see FIG. 2) of the other pipeline 21b2 of two bifurcated pipelines 21a2, 21b2 connected to the receiving well 22.

[0033] Before raw water is taken in at the water intake station 12, or while raw water is being taken in, for example, the gate valves 60, 60 of one of the two filter-equipped piping assemblies 40 are closed to stop the inflow of raw water into that filter-equipped piping assembly 40. The gate valves 60, 60 of the other filter-equipped piping assembly 40 maintain the inflow of raw water into the other filter-equipped piping assembly 40 and the outflow of raw water from the other filter-equipped piping assembly 40.

[0034] In this state, the worker opens the opening / closing portion 58 of the filter-equipped piping 50 of one of the filter-equipped piping assemblies 40 and increases or decreases the number of filters 54 in the pipe body 52 through the through holes of the window portion 56. The decision to increase or decrease the number of filters 54 in the pipe body 52 is based on the condition of the raw water estimated in advance based on the weather and the like upstream of the river and / or the real-time condition of the raw water acquired by the sensor 70. Thereafter, the opening / closing portion 58 is used to seal the through holes of the window portion 56, and the gate valves 60, 60 are opened, thereby allowing raw water to pass through one of the filter-equipped piping assemblies 40 as well as the other filter-equipped piping assembly 40.

[0035] The operator closes the gate valve 60 to increase or decrease the number of filters 54 in the pipe 52, as well as the filters 54 in the filter piping 50 of one filter piping assembly 40, as necessary. Then, the gate valve 60 is opened, allowing raw water to pass through not only the one filter piping assembly 40 but also the other filter piping assembly 40.

[0036] In this way, the raw water passed through one filter-equipped piping assembly 40 and the other filter-equipped piping assembly 40 join together in the pipeline 21, travels through the pipeline 21 to reach the receiving well 22, and is stored in the receiving well 22.

[0037] The receiving well 22 is used as an inlet of the water purification facility 14, which processes raw water sent from the water intake plant 12 through the pipeline 12a to the pipeline 21 of the water purification facility 14. The receiving well 22 adjusts the amount of raw water supplied through the pipeline 21, which is connected to the pipeline 12a of the water intake plant 12.

[0038] In this embodiment, by arranging two or more filter-equipped piping assemblies 40 in parallel in the pipeline 21 upstream of the receiving well 22, raw water can be sent to the receiving well 22 without stopping the flow of raw water. Also, in this embodiment, by arranging two or more filter-equipped piping assemblies 40 in parallel in the pipeline 21 upstream of the receiving well 22, the number of filters 54 can be increased or decreased without stopping the flow of raw water. Then, by increasing or decreasing the number of filters 54 in the filter-equipped piping assembly 40 in which the flow of raw water has been stopped, and then passing raw water through the filter-equipped piping assembly 40, the adsorption performance for adsorbing adsorbable substances can be adjusted depending on the amount of adsorbable substances contained in the raw water.

[0039] Furthermore, because the raw water is always passed through either one filter-equipped piping assembly 40 or the other filter-equipped piping assembly 40, the adsorbable substances contained in the raw water are appropriately adsorbed by the filter 54. Therefore, the raw water stored in the receiving well 22 contains fewer adsorbable substances that form flocs than the raw water before passing through the filter 54.

[0040] In this way, the filter-equipped piping 50, the filter-equipped piping assembly 40 having the filter-equipped piping 50, and the filter-equipped piping system can adjust their adsorption performance for adsorbing various components contained in the water being delivered by increasing or decreasing the number of filters 54 placed inside the pipe 52.

[0041] Powdered activated carbon is added as a flocculant in the receiving well 22. At this time, all raw water that reaches the receiving well 22 passes through filters 54. The number of filters 54 is adjusted depending on the condition of the raw water. As a result, the amount of substances that are contained in the raw water that passes through filters 54 and enters the receiving well 22 and that are flocculated is significantly reduced compared to when the raw water does not pass through filters 54. Therefore, the amount of flocculant (powdered activated carbon) that needs to be added to the receiving well 22 can be significantly reduced compared to conventional methods.

[0042] Powdered activated carbon may be injected into the pipeline 21 immediately after one filter-equipped piping assembly 40 and the other filter-equipped piping assembly 40 .

[0043] The raw water containing powdered activated carbon is sent from the receiving well 22 through a pipeline 23 to a mixing basin 24. In the mixing basin 24, a disinfectant such as sodium hypochlorite is further injected into the raw water containing the coagulant delivered from the receiving well 22, and the water is stirred.

[0044] Raw water is sent from the mixing basin 24 through a pipe 25 to the flocculation basin 26. In the flocculation basin 26, clumps of flocculant particles (flocs) are formed by the action of a flocculant. The flocs are formed by the aggregation of suspended solids, organic matter, bacteria, etc. in the raw water.

[0045] Raw water is sent from the flocculation basin 26 through a pipe 27 to a settling basin 28. The settling basin 28 sinks the flocs and sends the water above the flocs to a filtration basin 30 through a pipe 29.

[0046] The filter 30 passes the water from the settling basin 28 through a layer of sand or gravel to further purify it.

[0047] Water is sent from the filtration basin 30 through a pipe 31 to a chlorination basin (sterilization well) 32. The chlorination basin (sterilization well) 32 disinfects the water to prevent bacterial growth as it travels through a pipe 33 to a clean water basin 34. A chlorine agent (sodium hypochlorite) is generally used as the disinfectant. In this way, the raw water undergoes the above-mentioned treatment process and is treated into tap water in the chlorination basin 32.

[0048] The purified water reservoir 34 stores the tap water that has been treated as described above.

[0049] Tap water is sent from the purified water reservoir 34 through a pipe 35 to a distribution pump 36. The distribution pump 36 sends the tap water to the outside of the water purification facility 14 with an appropriate water pressure.

[0050] In addition, the water purification facility 14 often performs a process generally referred to as advanced water purification. There are various types of advanced water purification processes. One type of advanced water purification process, for example, involves adding granular or powdered activated carbon to the receiving well 22 or pipeline 21 described above to adsorb various components such as odor components.

[0051] In this embodiment, a ceramic honeycomb filter filled with activated carbon is used as the filter 54. By allowing the filter 54 to adsorb various components (adsorbents), such as odor components, the use of granular or powdered activated carbon can be reduced. Furthermore, even if the coagulation-sedimentation device from the receiving well 22 to the settling tank 28 is made smaller and the installation area of ​​the coagulation-sedimentation device is reduced, water can be sent to the downstream treatment process so as to provide tap water of good quality. Therefore, even in water supply and sewage treatment plants that do not have a large installation area or are under financial pressure, advanced water purification can be easily performed by installing a filter-and-pipe assembly 40 having a filter-and-pipe 50 in the pipeline 21. By performing advanced water purification using the filter-and-pipe assembly 40 having such a filter-and-pipe 50, tap water of good quality can be provided.

[0052] In addition to advanced water purification treatments that involve adding granular or powdered activated carbon to raw water, biological treatments (using biological contact filtration devices) are also available. A biological contact filtration device is preferably installed, for example, between the water intake plant 12 and the receiving well 22. By installing a filter-and-pipe assembly 40 having a filter-and-pipe 50 in the pipeline between the water intake plant 12 and the biological contact filtration device, the filter 54 can remove adsorbed components such as mold odors from the raw water before it reaches the receiving well 22. Therefore, even without using a biological contact filtration device or by using a smaller biological contact filtration device with a smaller installation area, water can be sent to a downstream treatment process to provide high-quality tap water. Therefore, even in water supply and sewage treatment plants that do not have a large installation area or are under financial pressure, advanced water purification treatments can be easily performed by installing a filter-and-pipe assembly 40 having a filter-and-pipe 50 in the pipeline 21. Furthermore, performing advanced water purification treatment using a filter-and-pipe assembly 40 having such a filter-and-pipe 50 provides high-quality tap water.

[0053] The advanced water purification treatment includes, for example, ozone treatment, and the water purification equipment 14 according to this embodiment may incorporate an ozone treatment device.

[0054] In the present embodiment, an example has been described in which the filter-equipped piping assembly 40 includes a filter-equipped piping 50 and gate valves 60 connected to the upstream and downstream sides of the filter-equipped piping 50. The gate valve 60 does not have to be directly connected to the upstream side of the pipe 52 of the filter-equipped piping 50. For example, when the filter-equipped piping 50 is arranged in the pipeline 21, it is sufficient that the gate valve 60 can prevent raw water from flowing into the filter-equipped piping 50 at a location in the pipeline 21 that is remote from the filter-equipped piping 50 on the upstream side. Furthermore, the gate valve 60 does not have to be directly connected to the downstream side of the pipe 52 of the filter-equipped piping 50. For example, when the filter-equipped piping 50 is arranged in the pipeline 21, it is sufficient that the gate valve 60 can prevent raw water from flowing into the filter-equipped piping 50 at a location in the pipeline 21 that is remote from the filter-equipped piping 50 on the downstream side.

[0055] Although not shown, the filter-equipped pipe 50 may be lined up as a filter-equipped pipe 50 having a preset number of filters 54, such as a filter-equipped pipe 50 having one filter 54, a filter-equipped pipe 50 having two filters 54, a filter-equipped pipe 50 having three filters 54, or a filter-equipped pipe 50 having four filters 54. In this case, the filter-equipped pipe 50 may be selected according to the expected turbidity of the raw water, and the pipe body 52 may be fixed to the pipeline 21 or the gate valve 60.

[0056] The filter 54 may be replaced when an appropriate flow rate of raw water flows through the pipe body 52 of the filter-equipped piping 50, or when a predetermined period of time has passed since the installation of the filter 54. For example, the filter 54 may be replaced when deterioration in the performance of the filter 54 is detected in a water quality test of the receiving well 22. The filter 54 may be disposable, or may be reused after cleaning or the like.

[0057] Alternatively, when cleaning the filter-equipped pipe 50, the backwashing process can be performed with the filter 54 still in place in the pipe body 52 of the filter-equipped pipe 50. Therefore, the filter-equipped pipe 50 may be made reusable without removing the filter 54 from the pipe body 52. ​​In this case, the backwashing process may be performed with the gate valve 60 still attached to at least one of the upstream and downstream sides of the filter-equipped pipe 50.

[0058] According to at least one of the embodiments described above, it is possible to provide a filter-equipped pipe capable of adjusting the adsorption performance for adsorbing various components contained in the water being delivered, a filter-equipped pipe assembly having such a filter-equipped pipe, a filter-equipped pipe system having such a filter-equipped pipe, and a water purification facility including such a filter-equipped pipe.

[0059] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0060] 12...water intake plant, 12a...pipeline, 14...water purification equipment, 21...pipeline, 22...receiving well, 23...pipeline, 24...mixing basin, 25...pipeline, 26...flocculation basin, 27...pipeline, 28...sedimentation basin, 29...pipeline, 30...filtration basin, 31...pipeline, 32...chlorine mixing basin, 33...pipeline, 34...cleaned water basin, 35...pipeline, 36...distribution pump, 40...piping assembly with filter, 50...piping with filter, 52...pipe body, 52a...main body, 52b...flange, 53...convex portion, 54...filter, 56...window portion, 58...opening / closing portion, 59...convex portion, 60...gate valve, 62...pipe body, 64...flange, 66...handle, 70...sensor.

Claims

1. a pipe body that can be inserted into and removed from piping in the water purification facility; one or more filters disposed within the tubular body and configured to adsorb substances contained in the water; a window portion as an edge portion that is provided on the peripheral wall of the pipe body and that forms a through hole that allows the filter to be inserted into or removed from the pipe body depending on the state of water upstream of the pipe body, and that increases or decreases the number of filters placed in the pipe body; an opening / closing portion provided on the pipe body and configured to open and close the through hole of the window portion; A filtered piping system.

2. Each of the filters is formed in a plate shape that can withstand the water pressure of water passing through the pipe body, the tube has a protrusion that forms a plurality of slots in which the one or more filters are disposed; The filter-equipped pipe according to claim 1.

3. The one or more filters are each a ceramic filter carrying activated carbon. The filter-equipped pipe according to claim 1 or 2.

4. A filter-equipped pipe according to claim 1 or 2; gate valves provided on the upstream and downstream sides of the pipe body, respectively, to stop the flow of the water into the pipe body; A filtered piping assembly comprising:

5. A filter-equipped pipe according to claim 1 or 2; a sensor provided upstream of the pipe for acquiring the state of water flowing inside the pipe; A filtered piping system comprising:

6. A pipeline between the intake plant and the receiving well of the water treatment facility; Various water purification treatment units between the pipeline and the water distribution pump of the water purification facility; The filter-equipped piping according to claim 1 or 2, which is provided in the pipeline and / or the pipeline between the receiving well and the distribution pump; Equipped with water purification facilities.

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