JP3723439B2 - Water treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water treatment apparatus, and more particularly, to a novel water treatment apparatus capable of treating a wide area of water such as seas, rivers, and lakes at low cost.
[0002]
[Prior art]
Conventionally, in order to purify water in a wide area such as rivers and lakes, raw water is extracted from rivers and lakes to a treatment facility installed on land using an appropriate water intake means such as a pump. After the purification process is performed, the treated water is returned again using an appropriate drainage means such as a pump.
[0003]
For this reason, large-scale related facilities and facilities are required as a processing facility, and a large facility site is required accordingly, installation work is inevitably large, and the power cost for transfer is large. It was unavoidable.
[0004]
[Problems to be solved by the invention]
Then, this invention makes it a subject to provide the novel water treatment apparatus which enables the process of the water of the wide area | regions, such as the sea, a river, and a lake, with a very simple installation and low power cost.
[0005]
[Means for Solving the Problems]
The above problem is solved by the following configuration.
[0006]
1. An inlet of raw water and an outlet of treated water are provided above the side peripheral wall immersed in the water to be treated, a top plate is provided at the top of the side peripheral wall, and the bottom plate can be moved up and down via a flexible sheet at the lower end. A water treatment chamber surrounded by the top plate, the side wall, the bottom plate and the flexible sheet is formed, and a buoyancy adjustment bag that can be expanded and contracted by connecting to the air supply / exhaust means is provided on the bottom plate. By expanding the bottom plate, the bottom plate is moved up by buoyancy to discharge the treated water in the water treatment chamber, and by shrinking the buoyancy adjustment bag, the bottom plate can be moved down by its own weight and raw water can be introduced into the water treatment chamber. Water treatment equipment characterized by
[0007]
2. 2. The water treatment apparatus according to 1 above, wherein the side peripheral wall is formed using a buoyancy bag filled with air.
[0008]
3. 3. The water treatment apparatus according to 1 or 2 above, wherein a stirrer is provided on the bottom plate.
[0009]
4). The above-mentioned 1, 2 characterized in that a treated water storage chamber having the same configuration as that of the treatment chamber is connected to the treated water outlet side of the side peripheral wall so as to store the treated water discharged from the treatment chamber. Or the apparatus for water treatment of 3.
[0010]
5. A water treatment apparatus comprising a plurality of the water treatment apparatuses according to any one of 1 to 4 above.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a perspective view showing a water treatment apparatus according to the present invention. The water treatment apparatus 1 is provided with a top plate 12 on an upper part of a side peripheral wall 11 having a rectangular shape in plan view and is covered with the top wall. The bottom plate 13 is attached to the lower end of the base plate 11 via the flexible sheet 14, thereby forming the water treatment chamber 10 surrounded by the top plate 12, the side peripheral wall 11, the bottom plate 13 and the flexible sheet 14.
[0013]
The side peripheral wall 11 forms a peripheral wall surface in which a wall material is stretched on a framework constructed using a PVC pipe or the like, and an upper portion and a lower portion are open, and constitutes a wall surface of an upper half portion of the water treatment chamber 10. The material constituting the wall material is not particularly limited as long as it is a material that can maintain water tightness and is excellent in water resistance because of being immersed in the water to be treated as described later, a vinyl chloride resin sheet, a polyester resin sheet. In addition to polyethylene resin sheets and the like, laminated sheets using these resin sheets can also be used.
[0014]
The side peripheral wall 11 is also preferably formed using a buoyancy bag filled with air inside or a water bag filled with water inside, so that the side peripheral wall 11 itself floats in the water and is covered. Even if the water surface position fluctuates up and down due to the increase or decrease in the water level of the treated water, the water treatment apparatus 1 moves up and down following the water surface position by the buoyancy of the side peripheral wall 11, so that the installation position is changed one by one according to the water level. There is no such annoyance.
[0015]
As the buoyancy bag or water bag, the wall material between the frames may be formed by filling air or water into a bag material formed of a flexible sheet such as a vinyl chloride resin, or similar to the above around the frame A pipe-shaped bag material formed by the flexible sheet may be filled with air or water, and an appropriate wall material such as a resin sheet may be stretched between the air bag or the water bag. .
[0016]
The top plate 12 covers the upper side of the side peripheral wall 11 to cut off the contact between the treated water in the water treatment chamber 10 and the external raw water (treated water), and foreign substances such as dust are further contained in the water treatment chamber 10. In addition to preventing entry, it also prevents odor emission and maintains a hygienic environment. Such a top plate 12 can be formed by molding a foamed synthetic resin material into a plate shape, in addition to being formed by a buoyancy bag filled with air inside, from the viewpoint of weight reduction and buoyancy.
[0017]
The bottom plate 13 is a flat plate that is substantially the same shape as the planar shape of the side peripheral wall 11 and is slightly smaller than the planar shape of the side peripheral wall 11. As the material of the bottom plate 13, a synthetic resin plate such as hard vinyl chloride, a metal plate such as stainless steel, or the like can be used. The surface of the metal plate may be coated with vinyl chloride or fluororesin.
[0018]
As shown in FIG. 2, a buoyancy adjustment bag 17 is provided on the bottom plate 13. The buoyancy adjustment bag 17 is connected to an air supply / exhaust means (not shown), and is configured to be inflated and contracted by air supply / exhaust operation by the air supply / exhaust means. Since this bottom plate 13 is located below the surface of the water to be treated as will be described later, buoyancy is imparted by inflating the buoyancy adjustment bag 17 and the buoyancy moves up in the water. At the time of this upward movement, the bottom plate 13 is formed to be slightly smaller than the planar shape of the side peripheral wall 11, so that it is accommodated in the side peripheral wall 11 with a slight gap from the inner surface of the side peripheral wall 11 (see FIG. (See the state of (1) in 1A of 5). Further, the bottom plate 13 is moved down to the state shown in FIG. 1 under its own weight by contracting the buoyancy adjustment bag 17.
[0019]
The illustrated buoyancy adjustment bag 17 is provided on the upper surface of the bottom plate 13, but may be the lower surface of the bottom plate 13, or may be provided on both the upper and lower surfaces. In the illustrated embodiment, the buoyancy adjustment bag 17 is formed in a substantially donut shape in plan view so as to follow the periphery of the bottom plate 13, but the planar shape is arbitrary.
[0020]
A stirrer 18 is provided in the approximate center of the upper surface of the bottom plate 13 so that the treated water in the water treatment chamber 10 can be stirred at a predetermined speed. For the stirrer 18, an underwater mixer is used.
[0021]
The flexible sheet 14 is stretched across the lower end of the side peripheral wall 11 and the peripheral edge of the bottom plate 13, thereby constituting the wall surface of the lower half of the water treatment chamber 10. The flexible sheet 14 is easily bent due to its own flexibility, so that the bottom plate 13 connected to the lower end of the flexible sheet 14 is moved up and down by the expansion and contraction of the buoyancy adjusting bag 17 as described above. It can be moved. As a material of the flexible sheet 14, a soft synthetic resin material having water resistance and chemical resistance, for example, a polyester synthetic sheet, a polyethylene synthetic sheet, or the like can be used.
[0022]
In FIG. 1, 15 is a raw water inlet for introducing raw water provided above the side peripheral wall 11 into the water treatment chamber 10, and 16 is provided on a wall surface facing the raw water inlet 15 above the side peripheral wall 11, A treated water outlet for discharging treated water in the water treatment chamber 10 to the outside of the water treatment chamber 10.
[0023]
For example, as shown in FIG. 3, the raw water inlet 15 and the treated water outlet 16 are opened and closed by air supply / exhaust by a supply / exhaust means (not shown) in a pipe portion 19 formed at the raw water inlet 15 and the treated water outlet 16. The valve bag 20 that can be expanded and contracted is inserted to form an on-off valve, and the valve bag 20 is expanded to seal the inside of the pipe portion 19 and shut off the flow of raw water or treated water, and contract By doing so, a gap can be formed between the inner surface of the pipe portion 19 and the outer surface of the valve bag 20 so that the raw water or the treated water can be circulated. As this air supply / exhaust means, it is preferable to also use the air supply / exhaust means for supplying / exhausting air to / from the buoyancy adjusting bag 17.
[0024]
When the water treatment apparatus 1 is used, the water to be treated is immersed in the water to be treated so that the raw water inlet 15 and the treated water outlet 16 of the side peripheral wall 11 are substantially in the same position as the surface of the water to be treated. Process. Here, the water to be treated includes water from rivers and lakes, and seawater. In addition, the lakes and marshes include not only lakes and marshes but also ponds and moats.
[0025]
Furthermore, in the present invention, water treatment refers to purification of water in rivers and lakes, pretreatment for seawater desalination, etc., and the water treatment apparatus 1 according to the present invention functions effectively when such treatment is performed. To do.
[0026]
In order to perform such treatment, the water treatment apparatus 1 according to the present invention may be used alone. However, as shown in FIG. 4, each raw water inlet 15 and treated water outlet 16 are the same according to the amount of treatment. It is also preferable to use a plurality of units arranged side by side so as to face the side. Thus, it is possible to easily cope with an increase in the processing amount by simply increasing the number of water treatment apparatuses 1 arranged in parallel. In addition, in the same figure, although the example which arranged the apparatus for water treatment 4A of 1A-1D side by side is shown, the number of parallel arrangements is not limited at all. Adjacent water treatment apparatuses may be in close contact as shown, or may be spaced apart with a slight gap. 15A-15D shows the raw | natural water inlet of each apparatus 1A-1D for water treatment. Reference numeral 21 denotes an anchor for mooring the entire water treatment apparatuses 1A to 1D.
[0027]
FIG. 5 illustrates the operation of the water treatment apparatus 1 by taking as an example the case of removing SS in water. Here, four water treatment apparatuses 1A to 1D shown in FIG. 4 are shown, but since the operation is the same in each apparatus, the water treatment apparatus 1A will be described as a representative. The processing operations of the devices 1A to 1D are performed in the order of (1) to (4) (from the top to the bottom in the figure) in the figure.
[0028]
First, the raw water inlet 15 is opened to allow the raw water to flow into the water treatment chamber 10. Here, since the bottom plate 13 moves upward in the water treatment chamber 10 and is positioned at the uppermost end, the air filled in the buoyancy adjustment bag 17 of the bottom plate 13 is exhausted and the bottom plate 13 is caused by its own weight. The raw water is accommodated by increasing the internal volume of the water treatment chamber 10 (FIG. 5 (1)).
[0029]
When the bottom plate 13 moves down to the lowest end and the raw water is filled up to the limit amount of water in the water treatment chamber 10, the raw water inlet 15 is shut off to perform the treatment. The raw water is treated by aggregating and stirring for a predetermined time by rotating the stirrer 18 ((2) in FIG. 5). In this stirring process, the flocculant may be supplied from the raw water inlet 15 simultaneously with the introduction of the raw water.
[0030]
After the stirring process for a predetermined time, the stirrer 18 is stopped to be in a stationary state, and sludge in the raw water is allowed to settle and separated from the supernatant treated water ((3) in FIG. 5).
[0031]
After the sedimentation separation, the treated water outlet 16 is opened to allow the treated water to flow, and the buoyancy adjusting bag 17 of the bottom plate 13 is filled with air to impart buoyancy to the bottom plate 13 and use the buoyancy. Then, the bottom plate 13 is moved up in the water treatment chamber 10 ((4) in FIG. 5). In accordance with the upward movement of the bottom plate 13, the treated water (supernatant water) in the water treatment chamber 10 is discharged to the outside from the treated water outlet 16, and the treated water is discharged until the bottom plate 13 is positioned at the uppermost end. At this time, since the treated water is pushed up and discharged from below by the upward movement of the bottom plate 13, the treated water that has already been finished is always discharged first, and clear treated water can always be discharged regardless of the amount of settled sludge. it can. After discharging the treated water, the settled sludge is extracted.
[0032]
Next, the treated water outlet 16 is shut off and the raw water inlet 15 is allowed to flow, and the process returns to the first process, and thereafter, the process is repeated.
[0033]
Thus, according to the apparatus 1 for water treatment which concerns on this invention, a series of processes from supply of raw | natural water to stirring process, sedimentation separation, and discharge | emission of a treated water can be performed in the to-be-treated water. Therefore, a large-scale processing facility is not required, and facility construction can be simplified. In addition, since it is immersed directly in the water to be treated, there is no need for a facility site on land. Further, the bottom plate 13 is moved up and down for introduction of raw water and discharge of treated water only by temporary work for supplying and exhausting air to the buoyancy adjusting bag 17 and continuously moving transfer means such as a pump. Since it is not used, the power cost can be greatly reduced. As a result, wind power generation and solar power generation can be used as a power source, and thorough energy saving measures can be taken. become. Combined with the fact that it can be easily installed, it can be used in areas without power facilities.
[0034]
In addition, when a plurality of water treatment devices are arranged in parallel as shown in FIG. 5, it is preferable to perform the treatment by shifting the process timing of each of the devices 1A to 1D. That is, in the process of FIG. 5 (1), when the water treatment apparatus 1A is supplying raw water, the water treatment apparatus 1B performs agitation and sedimentation treatment of the raw water, and the water treatment apparatus 1C settles in a stationary state. Separation processing is performed, and the water treatment apparatus 1D discharges the treated water. Thereafter, each of the water treatment apparatuses 1A to 1D performs processing with different timings in each step of FIG. 5 (2) to (4). Like to do. Thus, the air supply / exhaust means (not shown) may perform the air supply / exhaust operation of the buoyancy adjustment bag 17 of the bottom plate 13 of any water treatment device, and the buoyancy adjustment bag 17 of the bottom plate 13 of all water treatment devices. On the other hand, since it is not necessary to perform the air supply / exhaust operation at the same time, it is not necessary to increase the driving force of the compressor or the like for supplying / exhaust, and this is more effective for energy saving measures.
[0035]
As shown in FIG. 6, the water treatment apparatus 1 according to the present invention can treat the water of the river 100 by immersing it in the water of the river 100 so that the raw water inlet 15 is located on the upstream side. . In other words, after the raw water of the river 100 is introduced into the water treatment apparatus 1 and treated, the treated water is discharged again to the downstream side to reduce the SS concentration in the downstream water more than the upstream side. Can do. The water treatment apparatus 1 is more effective for purifying the river 100 if a plurality of units are set as one unit and a plurality of units are installed at intervals in the flow direction of the river 100. In the figure, reference numeral 22 denotes a control unit installed on land, which includes air supply / exhaust means, and supplies and exhausts air to the buoyancy adjustment bag 17 of the bottom plate 13, the raw water inlet 15 and the valve bag 20 of the treated water outlet 16. To control.
[0036]
FIG. 7 shows a case where the water treatment apparatus 1 is installed in a lake 101. By immersing the water treatment apparatus 1 in the water of the lake 101, introducing the raw water of the lake 101 into the water treatment apparatus 1 for treatment, and then discharging the treated water back to the lake 101, the lake The SS concentration in 101 water can be gradually reduced. The water treatment apparatus 1 may be provided with a plurality of units as one unit, and a plurality of units may be installed according to the size of the lake 101.
[0037]
When the lake 101 has, for example, the Nakajima 101a as shown in FIG. 8, the water treatment apparatus 1 is interposed so that the lake 101 is placed between the raw water side and the treated water side with the water treatment apparatus 1 interposed therebetween. Therefore, efficient processing is possible. In the case of a moat, it can be processed efficiently in the same manner.
[0038]
FIG. 9 shows a case where the water treatment apparatus 1 is installed in the harbor portion 102 of the sea. After immersing the water treatment device 1 in the water of the port portion 102, introducing the raw water of the port portion 102 into the water treatment device 1 and performing the treatment, discharging the treated water back to the port portion 102 again. Thus, the SS concentration in the water of the harbor portion 102 can be gradually reduced. The water treatment apparatus 1 may include a plurality of units as one unit, and a plurality of units may be installed according to the size of the port portion 102.
[0039]
FIG. 10 is a side view showing another aspect of the water treatment apparatus 1. In this embodiment, the treated water storage chamber 23 for storing the discharged treated water is connected to the treated water outlet 16 side of the side peripheral wall 11 forming the water treated chamber 10.
[0040]
The treated water storage chamber 23 has the same configuration as the water treatment chamber 10 constituted by the side peripheral wall 11, the top plate 12, the bottom plate 13 and the flexible sheet 14, and is integrated with the water treatment chamber 10 in the same manner. It is immersed in the water to be treated, receives the treated water in the water treatment chamber 10 and temporarily stores it. The treated water stored in the treated water storage chamber 23 can be taken out as needed, further transferred to another treatment facility for treatment, or effectively used as intermediate water.
[0041]
In addition, although the above description demonstrated what mixed the flocculant in raw | natural water and processed, you may make it process raw | natural water using activated sludge.
[0042]
Moreover, the planar shape of the water treatment apparatus 1 is not limited to a rectangular shape, and may be a circular shape or the like.
[0043]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the novel water treatment apparatus which enables the process of the water of the wide area | regions, such as a sea, a river, and a lake and marshes, with a very simple installation and low power cost can be provided.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing the structure of a water treatment apparatus. FIG. 2 is a perspective view showing the structure of a bottom plate. FIG. 3 is a cross-sectional view showing a structure example of a raw water inlet and a treated water outlet. Fig. 5 is a front view showing an example of use of the apparatus. Fig. 5 is a diagram for explaining the operation of the water treatment apparatus. Fig. 6 is a diagram showing an application example of the water treatment apparatus. FIG. 8 is a diagram showing an application example of a water treatment device. FIG. 9 is a diagram showing an application example of a water treatment device. FIG. 10 is a side view showing a usage state of another embodiment of the water treatment device. Description】
1: Water treatment apparatus 10: Water treatment chamber 11: Side peripheral wall 12: Top plate 13: Bottom plate 14: Flexible sheet 15: Raw water inlet 16: Treated water outlet 17: Buoyancy adjustment bag 18: Stirrer 19: Pipe portion 20 : Valve bag 21: Anchor 22: Control unit 23: Treated water storage chamber 100: River 101: Lake 102: Harbor

Claims (5)

An inlet of raw water and an outlet of treated water are provided above the side wall immersed in the water to be treated, and a top plate is provided at the top of the side wall and the bottom plate can be moved up and down via a flexible sheet at the lower end. A water treatment chamber enclosed by the top plate, the side peripheral wall, the bottom plate, and the flexible sheet is formed, and a buoyancy adjustment bag that can be expanded and contracted by connecting to the air supply / exhaust means is provided on the bottom plate. By expanding the bottom plate, the bottom plate is moved up by buoyancy to discharge the treated water in the water treatment chamber, and by shrinking the buoyancy adjustment bag, the bottom plate can be moved down by its own weight and raw water can be introduced into the water treatment chamber. Water treatment equipment characterized by The apparatus for water treatment according to claim 1, wherein the side peripheral wall is formed using a buoyancy bag filled with air. The apparatus for water treatment according to claim 1 or 2, wherein a stirrer is provided on the bottom plate. The treated water storage chamber having the same configuration as the treatment chamber is connected to the treated water outlet side of the side peripheral wall, and the treated water discharged from the treatment chamber is stored. The apparatus for water treatment as described in 2 or 3. A water treatment apparatus comprising a plurality of the water treatment apparatuses according to claim 1 arranged in parallel.

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