JP2000102797A - Rotary water purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the reduction of cost, o simplify equipment, maintenance, management or the like and to secure the purification of water and effective energy by radially attaching a plural number of blades to an impeller, forming each blade into a porous structure and boring a through hole in each blade in the direction intersecting the webbed surface. SOLUTION: A shaft center part 42 of the impeller 41 is constituted of a rotary shaft 43 and a rotary drum 44. The rotary drum 44 is formed into a hollow body and provided with many holes 45 on the outer peripheral surface thereof to impart air permeability or water permeability. Each blade 46 is similarly formed into a hollow body, provided with many number of small holes 47 and further the through hole 48 in the direction intersecting the webbed surface and plural numbers of the blades are radially arrayed and attached to the outer peripheral surface of the rotary drum 44. A filter medium 49 is filled in each inside space of the rotary drum 44 and each blade. The device is installed in water system such as river and water contaminated materials are captured by the rotary drum 44 and each blade 46 to biologically decompose by each filter medium 49 or to re-aerate the water system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field (pollution prevention technology) for preventing or improving water quality, and relates to a water quality purifying apparatus mainly using an impeller.

[0002]

2. Description of the Related Art Wastewater and wastewater (hereinafter simply referred to as wastewater) flowing into public waters such as rivers, lakes and marshes and seas are purified in advance to prevent water pollution. However, at present, there are not a few canals and water bodies that discharge wastewater to public water bodies without treatment. Contamination due to the steady discharge of untreated wastewater eventually reaches levels exceeding the self-cleaning capacity of public waters, making it difficult to preserve water quality. There are waterways and bodies of water that have actually been contaminated. Therefore, when improving water quality or avoiding water pollution over a wide area, regardless of the size of waterways and water bodies, it is necessary to consider purifying wastewater treatment by installing purification facilities in almost all of them. .

As a wastewater treatment for preventing water pollution, physical treatment means, chemical treatment means, biological treatment means, and a combination thereof have been put to practical use. Some of these processing means have low initial costs and running costs. For example, biological treatment means that treats wastewater with microorganisms by passing it through the inside of a microorganism treatment tank, and physical treatment means that puts wastewater into a simple sedimentation separation tank and separates contaminants in wastewater with a specific gravity difference, etc. . On the other hand, wastewater treatment means that require a large amount of equipment cost but have a high treatment effect have been developed. What can be said generally is that the processing effect is proportional to the equipment cost.

[0004]

It is self-evident that a method and an apparatus for wastewater treatment that can obtain a high treatment effect at low cost are desirable. In addition to this
Equipment that is easy to install, maintain and manage is more desirable. In addition, when useful energy can be obtained, a part or all of the cost required for the wastewater treatment facility can be recovered by this. From this point of view, existing wastewater treatment methods and wastewater treatment devices include those with low cost and those with high treatment effects,
The prior art does not satisfy both low cost and high processing effect at the same time. This is because, as described above, high costs such as enrichment and enlargement of equipment are required in exchange for high wastewater treatment effects. Enhancement and upsizing of equipment increase the difficulty of maintenance and management. Therefore, with regard to effective water pollution control technology, the burden on facilities is a bottleneck, preventing its widespread use. In addition, existing ones do not have any idea of obtaining useful energy together with wastewater treatment.

SUMMARY OF THE INVENTION In view of the above technical problems, the present invention is intended to obtain a high treatment effect at a low cost, to facilitate equipment, maintenance and management, to purify water quality and to use useful energy simultaneously. It is an object of the present invention to provide a rotary water purification apparatus that can satisfy the above requirements.

[0006]

The rotary water purification apparatus according to claim 1 of the present invention is characterized by the following means for achieving the intended purpose. That is, in the rotary water purification apparatus according to claim 1, the rotatable impeller includes a shaft portion and a plurality of blades, and each blade is radially attached to an outer peripheral surface of the shaft portion. Further, one or more blades of the impeller have a continuous pore type porous structure.

[0007] A rotary water purification apparatus according to a second aspect of the present invention is the rotary type water purification apparatus according to the first aspect, wherein the porous structure blade of the impeller is formed of a water-permeable hollow body containing a filtering material. I do.

According to a third aspect of the present invention, there is provided a rotary water purification apparatus according to the first aspect, wherein the porous impeller of the impeller is constituted by a continuous porous plate.

A rotary water purification apparatus according to a fourth aspect of the present invention is the rotary water purification apparatus according to any one of the first to third aspects, wherein the rotary drum having a continuous pore type porous structure is provided at an axis of the impeller. Each blade is mounted on the outer peripheral surface of the rotary drum.

According to a fifth aspect of the present invention, there is provided a rotary water purification apparatus according to any one of the first to third aspects, wherein the rotating shaft is provided at an axial center of the impeller, and each blade is provided at an outer periphery of the rotating shaft. It is characterized by being attached to a surface.

According to a sixth aspect of the present invention, there is provided the rotary water purification apparatus according to any one of the first to fifth aspects, wherein a flow hole penetrating the porous structure blade in the front-rear direction is formed in the blade. It is characterized by the following.

According to a seventh aspect of the present invention, there is provided a rotary water purification apparatus according to any one of the first to sixth aspects, wherein the impeller is supported via an elevator.

Function: The rotatable impeller in the apparatus of the present invention has one or more to less than all the blades having a continuous pore type porous structure. Such a porous structure blade is constituted by, for example, a water-permeable hollow body containing a filtering material, or is constituted by a continuous pore plate as another example. The impeller rotates when it receives flow energy at each blade. Therefore, when the impeller is used in the following manner, the porous structure vane becomes a filter for water, a landing layer (colonies) for microorganisms, a device for aeration, and the like.

An impeller installed in a flowing waterway such as a river or a drainage channel is rotated by flowing water. When the impeller is rotating, each blade circulates underwater and in the air. When the porous structure blade is in water, the water flowing through the water channel penetrates into the blade. When the porous structure vanes move from the water into the air, much of the water that has penetrated into the vanes falls off. At this time, the contaminants contained in the water are trapped in the porous space of the blade, and are decomposed by the microorganisms that have landed thereon. When the porous structure blade is in the air, aerobic bacteria vigorously propagate because air enters into the porous space of the blade. When the porous structure blade moves from the air to the water, the air (oxygen) in the blade is taken into the water and re-aerated. BOD and COD of water that has been re-aerated have a large amount of dissolved oxygen. The following will increase the cleanliness of water quality each time these are repeated.

In the apparatus of the present invention, the rotary drum having a continuous pore type porous structure at the axial center of the impeller is subjected to the same purification as above. Therefore, such a configuration has a higher ability to purify water. In the apparatus of the present invention, in which the blades are attached to the outer peripheral surface of the rotary shaft of the impeller, most of the blades except for the rotary shaft are blades, so that the ratio of the blades is large. With an impeller having a large proportion of blades, the blades can be adapted to a deep water system by extending the blades deep into the water, and are not significantly affected by fluctuations in water level. In the device of the present invention, the one in which the flow holes penetrate the porous structure blade in the front-rear direction is
The pores increase the surface area of the porous structure blade. Therefore, when the porous structure blade is in water, the water permeates well, and when the porous structure blade moves into the air thereafter, the drainage effect therefrom increases. That is, since water and air alternate in the porous structure blade, activation and propagation of aerobic bacteria are promoted, and oxygen is sufficiently taken up into water. The flow holes also facilitate setting of the weight of the porous structure blade or the resistance value of the blade against flowing water.

In the apparatus of the present invention, in which the impeller is supported via an elevator, the height of the impeller is controlled to the variable water level via the elevator even if the water level of the water system to be purified fluctuates due to weather conditions or other factors. Can follow. Therefore, the impeller is always kept at an appropriate level.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotary water purification apparatus according to the present invention will be described first with reference to FIGS. 1 to 3 and then to those illustrated in FIGS. And then those illustrated in FIG. 6 and FIGS. 7 and 8
Will be described. In addition, embodiments (not shown) of the present invention will be described.

The water system provided with the rotary type water purification device includes:
It may be a natural channel such as a river, an artificial channel such as a drainage channel, or a channel or body of water other than these. FIG. 1 and FIG. 2 show a drainage channel as a specific example of such a water system 11.

The elevator 21 illustrated in FIGS. 1 and 2 includes a support 22 and an elevating means for the support. The elevating means is, for example, a hydraulic cylinder or a pneumatic cylinder that expands and contracts vertically to move the support base 22 up and down. As another example of the elevator 21, a vertical screw shaft that rotates forward and reverse to move the support base 22 up and down, and a driving source (motor) for the same
There is a vertical feed mechanism mainly composed of
There is also a vertical feed mechanism in which a vertical support platform guide and an electric winch for vertically moving the support platform 22 are combined. All of these lifting means are known or well-known. Any other known or well-known elevating means may be employed for the elevating machine. Therefore, the support base 22 on the upper side of the elevator 21 can be moved up and down by such an elevator. It is customary to use two elevators 21 in pairs.

The elevation controller 23 shown in FIG. 1 and FIG.
The elevator 21 is moved up and down according to the measured water level. As the lifting controller 23, there are various types such as a type using a mechanical sensor, a type using an electric type sensor, a type using an optical type sensor, and a combined type of these. Examples of the mechanical sensor include a sensor that mechanically transmits the movement of the float to an electric system and a pneumatic sensor that detects a change in water level instead of a change in pressure. Examples of the electric sensor include a sensor using a water level measuring electrode and a variable resistance sensor that measures a change in water level (up and down movement of a float) instead of a change in length. Some optical sensors include a light source, a light receiving element (phototransistor), a condenser lens, a half mirror, an objective lens, and the like. In the examples shown in FIGS. 1 and 2, as the elevation controller 23, one mainly including the optical sensor described above is employed. In this optical sensor, light emitted from a light source is a condenser lens (transmission) → half mirror (refraction).
→ The light hits the water surface via an objective lens (transmission), and the light reflected on the water surface enters the light receiving element via the objective lens (transmission) → half mirror (transmission). When the water level rises and the water surface approaches the optical sensor, the amount of reflected light to the light receiving element increases, and conversely, when the water level decreases and the water surface moves away from the optical sensor, the amount of reflected light to the light receiving element decreases. Therefore, the elevator 21 can be moved up and down by an electric signal based on the change in light amount.

The power generating device 31 illustrated in FIGS. 1 and 2 generates electric power by using rotary power. Such a power generator 31 is well known. The motor 32 and the solar panel 33 illustrated in FIGS. 1 and 2 are also well known. Incidentally, the solar cell panel 33 has a large number of solar cell modules mounted on the panel surface, and an electric circuit (not shown) including a battery controller and others is connected to this.

The impeller 41 illustrated in FIGS. 1 to 3 can be called a "water wheel". The impeller 41 is as follows. The shaft portion 42 of the impeller 41 includes a rotating shaft 43 and a rotating drum 44. The rotating shaft 43 is made of a known one. The rotating drum 44 is formed of a hollow body in which a central circular tube, an outer peripheral cylinder, and circular plates on both sides are integrally combined. Since the large number of holes 45 are formed in a cylinder or a circular plate, the hollow rotary drum 44 has air permeability and water permeability. In the shaft portion 42 of the impeller 41, the two are relatively fixed in a manner that the rotating shaft 43 penetrates the center portion (circular tube) of the rotating drum 44, and thus the shaft portion 42
Is configured. The fixing means in this case may be a known one. One example is a thrust receiving collar, flange,
Bolts and nuts are used, and the rotating drum 44 is fixed to the rotating shaft 43 with these parts and members. Impeller 41
The blade 46 is a thick plate having a hollow body whose front and back surfaces are larger than other surfaces. Moreover, there are many small holes 47 in the hollow body. Therefore, the hollow blades 46 have air permeability and water permeability similarly to the rotary drum 44. In addition, a flow hole 48 penetrating the blade 46 in the front-rear direction is formed. The peripheral wall (cylindrical body) of the flow hole 48 also has many small holes 47. A plurality of blades 46 of the impeller 41 are mounted on the outer peripheral wall (cylindrical wall) of the rotating drum 44 in a radial arrangement at equal intervals. On the other hand, openings for attaching a plurality of blades 46 are formed on the outer peripheral wall of the rotating drum 44 at equal intervals in the circumferential direction. In the example of FIGS. 1 to 3 having eight blades 46,
The blades 46 are attached to the outer peripheral surface of the rotary drum 44 by inserting their roots into the openings of the rotary drum 44, and the blades 46 after the attachment protrude from the outer peripheral surface of the rotary drum 44. As means for attaching the blades 46 to the rotating drum 44, well-known means depending on the material, such as metal fittings, welding, bonding, and binding, are employed. Each of the blades 46 attached to the outer peripheral surface of the rotary drum 44 has
8 are alternately shifted as shown in FIG.
8 is previously formed as such.
The reason why the blade mounting opening is formed in the rotary drum 44 is to allow air, water, and the like to freely enter and exit between the blades 46 and the rotary drum 44. The blade mounting opening also stabilizes the mounting state of each blade 46. The inner space of the rotary drum 44 in the impeller 41 and each blade 4
In the internal space of No. 6, a filtering material 49 is inserted so as to fill each internal space. Normally, a part of the rotary drum 44 and a part of each blade 46 are formed with an entrance for taking in and out the filter material 49, and a lid for opening and closing the entrance is provided. 1 to 3
In these figures, the illustration of the entrance and the lid is omitted.
As can be understood from the above description, it can be said that each blade 46 and the rotary drum 44 of the impeller 41 have a continuous pore type porous structure.

The rotating shaft 43, the rotating drum 44, the blades 46, etc. of the impeller 41 are made of metal, synthetic resin (including FRP), or a composite material of these. The rotating shaft 43 is desirably made of metal to secure the strength. A carbon rod or the like can also be used as the rotating shaft 43. Rotary axis 4
3 may consist of a hollow shaft. The rotating drum 44 and the blades 46 may be made of any of the above materials, but are preferably made of a synthetic resin in terms of reducing corrosion resistance and weight. The rotating drum 44 and the blades 46 are also made of a perforated plate material or a mesh material. As an example, the rotating drum 44 is made of a perforated plate, and the blades 46 are made of a mesh material. As the filtering material 49, one or more of zeolite, crushed stone, silica, charcoal, coal, crushed ceramic (eg, crushed unburned brick or unburned tile), activated carbon, vegetable fiber, synthetic fiber, wood chip (wood chips), etc. Things are adopted.

In the example of FIGS. 1 and 2, a pair of elevators 21 are installed on both sides of the upstream area and both sides of the downstream area of the water system 11, respectively. Bearings 50 are respectively mounted on the support bases 22 of the elevators 21 in the upstream region, and the impeller 4
One rotating shaft 43 is supported at both ends by these bearings 50. The impeller 41 in the upstream region is rotatable by such support, and a part of the rotary drum 44 and each blade 46 are immersed in the water of the water system 11. Further speaking of the impeller 41 in the upstream region, this is a single type having only one set of the blades 46. An elevating controller 23 is mounted on a support table 22 of the elevator 21 on the left side of the upstream area (the left side in FIG. 1). The lift controller 23 is connected to control the lift 21. Since the lifting controller 23 in the illustrated example is mainly composed of an optical sensor, the tip of the device 23, which serves both as a light emitting end and a light receiving end, is directed to the water surface as shown in FIG. Upstream right side (Fig. 1
The elevator 21 (on the right side of FIG. 2) is synchronized with and synchronized with the elevator 21 on its left side, as is obvious. For that purpose, both elevators 21 use a wired or wireless signal transmission means (not shown) as a medium. A power generator 31 is mounted on a support 22 of the elevator 21 on the right side of the upstream area (the right side in FIG. 1). The power generator 31 is connected to the rotating shaft 43 because it generates power using the rotation of the impeller 41. Both elevators 21 in the downstream region also rotatably support the impeller 41 in the same manner as described above. Both elevators 2
The relationship between 1 and the elevation controller 23 is the same as above.
The downstream impeller 41 is different from the upstream impeller in that it is a twin type having two sets of blades 46 in a set. The elevator 21 on the right side of the downstream area (the right side in FIG. 1) differs from that of the upstream area in that a motor 32 is mounted on a support base 22 thereof. The motor 32 is for rotating the impeller 41 in the downstream area. Thus, the rotation shaft 43 of the downstream impeller 41 is connected to the output shaft of the motor 32. The solar cell panel 33 is installed on the ground in the downstream area. The electric power obtained by the solar cell panel 33 can be used for any of them. In the case of FIG. 1, the solar cell panel 33 is connected to the motor 32 to supply electric power. The motor 32 is
In addition, it is connected to the power generator 31 so as to receive power supply. Items for which the description of the impeller 41 in the downstream region and the configuration related to the impeller 41 are omitted are substantially the same as those in the upstream region. Both the upstream and downstream elevators 21
When these are operated by electric power, such power supply can be received from the power generation device 31 or the solar cell panel 33.

A rotary water purification apparatus according to the present invention is shown in FIGS.
In the case of the embodiment illustrated in FIG. 3, the water quality of the water system 11 is preserved as described below.

In the water system 11 shown in FIG. 1, in the upstream region where the flow is fast, the impeller 41 receives the flow with each blade 46 and rotates. As the impeller 41 rotates, each blade 46 circulates in the water and in the air, and the rotating drum 44 also constantly changes the part immersed in the water. The rotating drum 44 and each blade 46 of the impeller 41 are formed of a hollow body having water permeability, and a filtering material 49 is filled in the internal space thereof. Such a layer of the filtering material 49 has a filtering function and an aeration function and also functions as a bed for microorganisms. Therefore, the impeller 41 in the upstream area of the water system 11
The water pollutants are trapped by the blades 4 and the blades 46, the trapped water pollutant microorganisms are decomposed by the microorganisms in the filter medium layer, and the water system 11 is re-aerated. In addition, the fact that the impeller 41 is dynamic means that the filter media rub against each other, so that the microbial film on the filter media surface peels off.
Metabolism of microorganisms living in the filter media layer is also actively performed. Thus, in the water system 11, the pollution of the water quality is prevented or the water quality is improved in the upstream area. When the amount of captured matter accumulated in each blade 46 of the impeller 41 increases, a part of the captured material may leak from each blade 46 and flow. As a countermeasure, the impeller 41 may be periodically cleaned.
No. 56762) is installed at the downstream (downstream side) of the water purification device to deal with this.

The water level of the water system 11 often fluctuates due to weather conditions and other causes. In such a case, it is desirable to raise or lower the impeller 41 according to the fluctuating water level. 1 and 2 automatically adjusts the height of the impeller 41 via a lift controller 23 and a pair of lifts 21. 1 and 2, the elevation controller 23 constantly measures the water level of the water system 11, and when the water level of the water system 11 rises or falls so as to exceed a predetermined value or more, the elevation controller 23 sends the two elevators 21 Then, a drive control signal is input to the controller to raise or lower these support bases 22 by a predetermined amount to shift the impeller 41 to an appropriate height.

In FIG. 1 and FIG. 2, in the upstream area of the water system 11, a power generator 31 connected to a rotating shaft 43 of an impeller 41 generates power. The electric power obtained by the power generator 31 is supplied to a motor 32 located downstream.

In the water system 11 shown in FIG. 1, the flow in the downstream area is very gentle. In such a basin, it is difficult to rotate the impeller 41 stably and steadily using the water flow. Therefore, the impeller 41 in the downstream region is rotated by the motor 32 that is supplied with power from the power generator 31 and the solar cell panel 33. When the impeller 41 in the downstream area is rotated, the contamination of the water quality is prevented and the water quality is improved in the downstream area in substantially the same manner as in the upstream area. The point that the height of the impeller 41 is automatically adjusted in accordance with the water level fluctuation of the water system 11 in the downstream area is the same as that in the case of the upstream area.

In the rotary water purification apparatus according to the embodiment of the present invention, the one illustrated in FIGS. 4 and 5 differs from the previous example in the configuration of the elevator 21. The pair of elevators 21 in the illustrated example includes a floating base 24 having a large buoyancy and a plurality of guide rods 26, and guide holes 25 penetrating the floating base 24 up and down are formed at four corners of the floating base 24. I have. Each guide rod 26 penetrating through each guide hole 25 of the pontoon 24 is driven into the bottom of the water system 11 and rises high on the water surface, and the pontoon 24 floats on the water surface of the water system 11 by buoyancy. The impeller 41 of this example is also rotatably supported via a pair of bearings 50 mounted on the pontoons 24 of the lifts 21 as in the previous example. A motor 32 for rotating the impeller 41 is mounted on the pontoon 24 on the left side of FIG. 4 and is connected to a rotation shaft 43 of the impeller 41. The left float 24
A solar cell panel 33 for supplying power to the motor 32 is mounted on the upper side, and is connected to the motor 32. The power generator 31 is mounted on the floating base 24 on the right side in FIG. 4 and is connected to the rotating shaft 43 of the impeller 41.

The pontoon 24 is composed of a buoyant material and / or a buoyant structure. Buoyant materials have a lower specific gravity than water, as is self-evident. The buoyant structure is like an airtight hollow body or a foam (closed cell). For this, wood, synthetic resin, metal, and the like, and those made of a composite thereof are used.

The apparatus of the present invention illustrated in FIGS. 4 and 5 is the same as the previous example in that the impeller 41 is rotated to prevent water pollution and improve water quality. Then, the solar cell panel 33 supplies power to the motor 32, and the power generation device 31 generates power as in the previous example. The power obtained by the power generator 31 can be used freely. In such embodiments, artificial waterways, rivers,
This is convenient when the equipment is installed on water away from the shore in lakes, marshes, and sea areas. 4 and 5, when the water level fluctuates, the floating bases 24 of the elevators 21 are connected to the guide rods 26.
Move up and down along with the buoyancy. Therefore, the height of the impeller 41 is always appropriately maintained.

The elevator 21 illustrated in FIG. 6 is mainly composed of a buoy 27. A plurality of winches 28 are mounted on the barge 27. The barge 27 is well known as a tugboat or workboat, and may be equipped with a propulsion means such as a screw. The plurality of winches 28 are electric or manual, and are fixed at four corners on the barge 27. An unillustrated anchor is attached to the tip of a wire (wire) 29 that is wound up or unwound by each winch 28. The pair of elevators 21 makes these barges 27 self-propelled to the installation location in the water area, or after towing with a tugboat,
The anchor at the tip of 9 is anchored and moored. A pair of bearings 50 are mounted on the two boats 27 as in the case of FIG. 4, and the impeller 41 is rotatably supported thereby. In the example of FIG. 6, the point that the power generator 31, the motor 32, the solar cell panel 33, and the like are mounted on each barge 27 is the same as the case of FIG. In addition, items whose description is omitted in the example of FIG. 6 are the same as or similar to the above-described embodiments.

The apparatus of the present invention in which the impeller 41 is supported by the elevator (one pair) 21 shown in FIG. 6 also rotates the impeller 41 to prevent water pollution and improve the water quality. In the example of FIG. 6 as well, when the water level fluctuates, the barge 27 of each of the elevators 21 moves up and down, so that the height of the impeller 41 is always appropriately maintained. When each of the ropes 29 becomes tensed or relaxed due to the vertical movement of the two boats 27, each winch 2
8 is rotated in reverse (winding rotation) or forward rotation (rewinding rotation) to keep the tension of each cable 29 constant. When this is to be automated, an electric motor that can be turned on and off via a tension measuring device of the cable 29 is used as each winch 28.

The impeller 41 illustrated in FIG. 7 has a configuration in which the rotary drum 44 is omitted from the impeller 41 of the previous example, and the above-described respective impellers 46 are radially mounted on the outer peripheral surface of the rotary shaft 43. . Therefore, the shaft center portion 42 of the impeller 41 in FIG. The impeller 41 illustrated in FIG. 8 also has the shaft center portion 42 including only the rotation shaft 43. The aforementioned blades 46 and other types of blades 51 are alternately arranged and radially attached to the outer peripheral surface of the rotating shaft 43. Other types of blades 51 are flat plate-shaped without holes. Such a blade 51 is made of, for example, synthetic resin, wood,
It is made of metal or a composite of these. The blade 51 may be hollow depending on the material. Each of the impellers 41 illustrated in FIGS. 7 and 8 is used in the same manner as in the previous example. In addition, in the case of the impeller 41 having the rotating drum 44 illustrated in FIGS. 1 to 4, two kinds of blades 46 and 51 may be radially attached to the outer peripheral surface of the rotating drum 44 in an alternate arrangement. As the rotating drum 44, a drum having a polygonal cylindrical shape can be adopted. In addition, the shapes of the blades 46 and 51 can be freely set.

The blades 46 of the impeller 41 have a continuous pore type porous structure as described above. The following embodiments other than the illustrated example can be employed for the porous structure blade 46. One of the methods is to load a plate-shaped or sheet-shaped porous material into the hollow body when the outer shell of the blade 46 is formed of the above-described hollow body having water permeability or air permeability. One plate-shaped porous material is used when it is thick, and two or more sheets are used when it is thin. In the case of a sheet-like porous material, a plurality of porous materials are used by overlapping. Specific examples of the plate-like porous material and the sheet-like porous material include a wire mesh, a synthetic resin mesh, a net woven with mesh yarn, a synthetic resin continuous pore foam plate, an artificial pumice plate having continuous pores, and a synthetic resin. Perforated sheet made of stainless steel and coarse cloth. The other is to configure the porous structure blade 46 by a porous plate. In this case, the perforated plate is made of the thick porous material alone. Therefore, when the strength of the perforated plate is insufficient, a reinforcing material such as a frame, a lattice, or a bar is attached thereto, and when the strength of the perforated plate is sufficient, such a reinforcing material is omitted. Still another is laminating the plate-like porous material or the sheet-like porous material and bonding and / or bonding.
Alternatively, the perforated blades 46 are constituted by the thick perforated plates obtained by combining them with the stoppers. Also in this case, the necessity of the reinforcing material is determined depending on the strength of the perforated plate. As can be understood from the above description, the blade 46 of the impeller 41, that is, the continuous pore type porous structure blade 46 is constituted by a continuous pore plate in an embodiment (not shown). Such porous structure blades 46 are more stable in the strength and strength of the blades than those using the filtering material 49,
Easy to handle and easy to make artificially. As for the impeller 41 described in this paragraph, the above-described technical items can be adopted within a compatible range. In addition, matters that have been omitted from the description of the impeller 41 described in this paragraph are practically the same as or similar to the contents described above.

The rotary drum 44 also has a paragraph number [0036] when it has a continuous pore type porous structure.
The embodiment as described above can be adopted. When the embodiment as described in paragraph [0036] is adopted in the rotating drum 44, the above-described porous material / porous plate used singly or plurally is formed in a columnar or cylindrical shape. Among these, the cylindrical porous materials superposed inside and outside have different diameters.

[0038]

The rotary water purification apparatus according to each claim of the present invention has the following effects.

According to the first aspect of the present invention, the continuous pore type porous structure blade in the impeller is used as a filter for water contaminants or a bed for microorganisms. With such a device, water pollutants can be captured and decomposed (using microorganisms) simply by rotating the impeller using the water flow, and at the same time, the metabolism of microorganisms can be activated and the treated water area can be increased. Or re-aeration. Therefore, the cleanliness of water quality can be improved by the synergistic effect of these. In addition, with regard to this device, which is mainly composed of low-cost and simple-structured impellers, production costs and equipment costs can be kept low, including large-scale ones, and equipment, maintenance and management are easy. Therefore, it is expected that this will be widely spread. The apparatus according to the first aspect of the present invention can be rotated using natural energy, so that almost no operating cost is required, and power generation can be performed by using the rotating energy of the impeller. Obtained at the same time.

In the apparatus according to the second aspect, the porous impeller of the impeller is formed of a hollow body containing a filtering material, so that in addition to the effect described in paragraph [0039], the metabolism of microorganisms is also activated. And the water purification effect can be enhanced.

In the apparatus according to the third aspect, since the porous impeller of the impeller is constituted by a continuous porous plate, the paragraph number [0] is adopted.
[039] In addition to the effects described in [039], there is an effect that the strength of the blade is stable and easy to handle, and it is easy to make artificially.

According to a fourth aspect of the present invention, the rotary drum having a continuous pore type porous structure is provided at the axis of the impeller. Since the same purification as described above is performed in the rotary drum, the ability to purify water quality is higher.

In the apparatus according to the fifth aspect, each blade is attached to the outer peripheral surface of the impeller rotating shaft. This is because most of the blades of the impeller except for the rotating shaft are blades, so that the ratio of the blades is large. Impellers with a large percentage of blades are suitable for deep water systems and are not significantly affected by fluctuations in water level.

In the apparatus according to the sixth aspect, since the flow holes penetrate the porous structure blade in the front-rear direction to increase the surface area of the blade, the permeability of water and air to the porous structure blade and the drainage effect are enhanced. . This means that the activation and propagation of aerobic bacteria are promoted, and that sufficient uptake of oxygen into water is achieved. In addition, the flow holes facilitate setting of the weight of the porous structure blade and the resistance value of the blade to running water.

In the apparatus according to claim 7, since the impeller is supported via the elevator, even if the water level of the water system to be purified fluctuates due to weather conditions and other factors, the height of the impeller fluctuates. It can follow the water level. Therefore, the impeller can always be maintained at an appropriate level.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an embodiment of the device of the present invention.

FIG. 2 is a vertical sectional front view of a main part of the apparatus shown in FIG. 1;

FIG. 3 is a vertical sectional side view of an impeller in the apparatus of FIG.

FIG. 4 is a plan view schematically showing another embodiment of the device of the present invention.

FIG. 5 is a vertical sectional front view of the elevator in the apparatus of FIG. 5;

FIG. 6 is a front view schematically showing another embodiment of the elevator of the apparatus of the present invention.

FIG. 7 is a vertical sectional side view schematically showing another embodiment of the impeller of the apparatus of the present invention.

FIG. 8 is a longitudinal sectional side view schematically showing still another embodiment of the impeller of the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Water system 21 Elevator 22 Support stand 24 Floating stand 25 Guide hole 26 Guide rod 27 Barge 28 Winch 29 Rope 41 Impeller 42 Shaft center part 43 Rotation axis 44 Rotary drum 45 Hole 46 Blade 47 Hole 48 Flow passage hole 49 Filter material 50 bearing

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[Procedure amendment]

[Submission date] July 12, 1999 (1999.7.1)
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Rotary water purification equipment

[Claims]

6. impeller rotary water purification device according to claim 1 to 5 or which is supported via the elevator.

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field (pollution prevention technology) for preventing or improving water quality, and relates to a water quality purifying apparatus mainly using an impeller.

[0002]

2. Description of the Related Art Wastewater and wastewater (hereinafter simply referred to as wastewater) flowing into public waters such as rivers, lakes and marshes and seas are purified in advance to prevent water pollution. However, at present, there are not a few canals and water bodies that discharge wastewater to public water bodies without treatment. Contamination due to the steady discharge of untreated wastewater eventually reaches levels exceeding the self-cleaning capacity of public waters, making it difficult to preserve water quality. There are waterways and bodies of water that have actually been contaminated. Therefore, when improving water quality or avoiding water pollution over a wide area, regardless of the size of waterways and water bodies, it is necessary to consider purifying wastewater treatment by installing purification facilities in almost all of them. .

As a wastewater treatment for preventing water pollution, physical treatment means, chemical treatment means, biological treatment means, and a combination thereof have been put to practical use. Some of these processing means have low initial costs and running costs. For example, biological treatment means that treats wastewater with microorganisms by passing it through the inside of a microorganism treatment tank, and physical treatment means that puts wastewater into a simple sedimentation separation tank and separates contaminants in wastewater with a specific gravity difference, etc. . On the other hand, wastewater treatment means that require a large amount of equipment cost but have a high treatment effect have been developed. What can be said generally is that the processing effect is proportional to the equipment cost.

[0004]

It is self-evident that a method and an apparatus for wastewater treatment that can obtain a high treatment effect at low cost are desirable. In addition to this
Equipment that is easy to install, maintain and manage is more desirable. In addition, when useful energy can be obtained, a part or all of the cost required for the wastewater treatment facility can be recovered by this. From this point of view, existing wastewater treatment methods and wastewater treatment devices include those with low cost and those with high treatment effects,
The prior art does not satisfy both low cost and high processing effect at the same time. This is because, as described above, high costs such as enrichment and enlargement of equipment are required in exchange for high wastewater treatment effects. Enhancement and upsizing of equipment increase the difficulty of maintenance and management. Therefore, with regard to effective water pollution control technology, the burden on facilities is a bottleneck, preventing its widespread use. In addition, existing ones do not have any idea of obtaining useful energy together with wastewater treatment.

SUMMARY OF THE INVENTION In view of the above technical problems, the present invention is intended to obtain a high treatment effect at a low cost, to facilitate equipment, maintenance and management, to purify water quality and to use useful energy simultaneously. It is an object of the present invention to provide a rotary water purification apparatus that can satisfy the above requirements.

[0006]

The rotary water purification apparatus according to claim 1 of the present invention is characterized by the following means for achieving the intended purpose. That is, in the rotary water purification apparatus according to claim 1, the rotatable impeller includes a shaft portion and a plurality of blades, and each blade is radially attached to an outer peripheral surface of the shaft portion. And that at least one of the blades in the impeller has a continuous pore type porous structure , and that the porous structure blade is
A flow hole penetrating in the inserting direction is formed in the blade
It is characterized by the following.

[0007] A rotary water purification apparatus according to a second aspect of the present invention is the rotary type water purification apparatus according to the first aspect, wherein the porous structure blade of the impeller is formed of a water-permeable hollow body containing a filtering material. I do.

According to a third aspect of the present invention, there is provided a rotary water purification apparatus according to the first aspect, wherein the porous impeller of the impeller is constituted by a continuous porous plate.

A rotary water purification apparatus according to a fourth aspect of the present invention is the rotary water purification apparatus according to any one of the first to third aspects, wherein the rotary drum having a continuous pore type porous structure is provided at an axis of the impeller. Each blade is mounted on the outer peripheral surface of the rotary drum.

According to a fifth aspect of the present invention, there is provided a rotary water purification apparatus according to any one of the first to third aspects, wherein the rotating shaft is provided at an axial center of the impeller, and each blade is provided at an outer periphery of the rotating shaft. It is characterized by being attached to a surface.

[0011] rotary water purification device according to claim 6 of the present invention is the one described in any one of claims 1-5, characterized in that the impeller is supported via the elevator.

[0012] act: rotatable impeller in the present invention apparatus, the following blade one or more and the total number has a porous structure of continuous pores type. Such a porous structure blade is constituted by, for example, a water-permeable hollow body containing a filtering material, or is constituted by a continuous pore plate as another example. The impeller rotates when it receives flow energy at each blade. Therefore, when the impeller is used in the following manner, the porous structure vane becomes a filter for water, a landing layer (colonies) for microorganisms, a device for aeration, and the like.

[0013] impeller which is equipment of the flow waterway such as rivers and drainage is rotated by flowing water. When the impeller is rotating, each blade circulates underwater and in the air. When the porous structure blade is in water, the water flowing through the water channel penetrates into the blade. When the porous structure vanes move from the water into the air, much of the water that has penetrated into the vanes falls off. At this time, the contaminants contained in the water are trapped in the porous space of the blade, and are decomposed by the microorganisms that have landed thereon. When the porous structure blade is in the air, aerobic bacteria vigorously propagate because air enters into the porous space of the blade. When the porous structure blade moves from the air to the water, the air (oxygen) in the blade is taken into the water and re-aerated. BOD and COD of water that has been re-aerated have a large amount of dissolved oxygen. The following will increase the cleanliness of water quality each time these are repeated.

[0014] which a rotary drum having a porous structure of continuous pores form in the present invention apparatus is in axial center of the impeller, again similar to the purification as described above is performed. Therefore, such a configuration has a higher ability to purify water. In the apparatus of the present invention, in which the blades are attached to the outer peripheral surface of the rotary shaft of the impeller, most of the blades except for the rotary shaft are blades, so that the ratio of the blades is large. With an impeller having a large proportion of blades, the blades can be adapted to a deep water system by extending the blades deep into the water, and are not significantly affected by fluctuations in water level. In the device of the present invention, the one in which the flow holes penetrate the porous structure blade in the front-rear direction is
The pores increase the surface area of the porous structure blade. Therefore, when the porous structure blade is in water, the water permeates well, and when the porous structure blade moves into the air thereafter, the drainage effect therefrom increases. That is, since water and air alternate in the porous structure blade, activation and propagation of aerobic bacteria are promoted, and oxygen is sufficiently taken up into water. The flow holes also facilitate setting of the weight of the porous structure blade or the resistance value of the blade against flowing water.

In the apparatus of the present invention, in which the impeller is supported via an elevator, even if the water level of the water system to be purified fluctuates due to meteorological conditions or other factors, the height of the impeller is maintained at the variable water level via the elevator. Can follow. Therefore, the impeller is always kept at an appropriate level.

[ 0016 ]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotary water purification apparatus according to the present invention will be described first with reference to FIGS. 1 to 3 and then to those illustrated in FIGS. And then those illustrated in FIG. 6 and FIGS. 7 and 8
Will be described. In addition, embodiments (not shown) of the present invention will be described.

The water system is equipment rotary water purification device,
It may be a natural channel such as a river, an artificial channel such as a drainage channel, or a channel or body of water other than these. FIG. 1 and FIG. 2 show a drainage channel as a specific example of such a water system 11.

The elevator 21 which is illustrated in FIGS. 1 and 2 and a lifting means for the support table and the support stand 22. The elevating means is, for example, a hydraulic cylinder or a pneumatic cylinder that expands and contracts vertically to move the support base 22 up and down. As another example of the elevator 21, a vertical screw shaft that rotates forward and reverse to move the support base 22 up and down, and a drive source (motor)
There is a vertical feed mechanism mainly composed of
There is also a vertical feed mechanism in which a vertical support platform guide and an electric winch for vertically moving the support platform 22 are combined. All of these lifting means are known or well-known. Any other known or well-known elevating means may be employed for the elevating machine. Therefore, the support base 22 on the upper side of the elevator 21 can be moved up and down by such an elevator. It is customary to use two elevators 21 in pairs.

The elevator controller 23 shown in FIGS. 1 and 2,
The elevator 21 is moved up and down according to the measured water level. As the lifting controller 23, there are various types such as a type using a mechanical sensor, a type using an electric type sensor, a type using an optical type sensor, and a combined type of these. Examples of the mechanical sensor include a sensor that mechanically transmits the movement of the float to an electric system and a pneumatic sensor that detects a change in water level instead of a change in pressure. Examples of the electric sensor include a sensor using a water level measuring electrode and a variable resistance sensor that measures a change in water level (up and down movement of a float) instead of a change in length. Some optical sensors include a light source, a light receiving element (phototransistor), a condenser lens, a half mirror, an objective lens, and the like. In the examples shown in FIGS. 1 and 2, as the elevation controller 23, one mainly including the optical sensor described above is employed. In this optical sensor, light emitted from a light source is a condenser lens (transmission) → half mirror (refraction).
→ The light hits the water surface via an objective lens (transmission), and the light reflected on the water surface enters the light receiving element via the objective lens (transmission) → half mirror (transmission). When the water level rises and the water surface approaches the optical sensor, the amount of reflected light to the light receiving element increases, and conversely, when the water level decreases and the water surface moves away from the optical sensor, the amount of reflected light to the light receiving element decreases. Therefore, the elevator 21 can be moved up and down by an electric signal based on the change in light amount.

The power generating device 31 which is illustrated in FIGS. 1 and 2 is for power generation by utilizing the rotational power. Such a power generator 31 is well known. The motor 32 and the solar panel 33 illustrated in FIGS. 1 and 2 are also well known. Incidentally, the solar cell panel 33 has a large number of solar cell modules mounted on the panel surface, and an electric circuit (not shown) including a battery controller and others is connected to this.

[0021] The impeller 41 illustrated in FIGS. 1 to 3 may also be referred to as "water wheel". The impeller 41 is as follows. The shaft portion 42 of the impeller 41 includes a rotating shaft 43 and a rotating drum 44. The rotating shaft 43 is made of a known one. The rotating drum 44 is formed of a hollow body in which a central circular tube, an outer peripheral cylinder, and circular plates on both sides are integrally combined. Since the large number of holes 45 are formed in a cylinder or a circular plate, the hollow rotary drum 44 has air permeability and water permeability. In the shaft portion 42 of the impeller 41, the two are relatively fixed in a manner that the rotating shaft 43 penetrates the center portion (circular tube) of the rotating drum 44, and thus the shaft portion 42
Is configured. The fixing means in this case may be a known one. One example is a thrust receiving collar, flange,
Bolts and nuts are used, and the rotating drum 44 is fixed to the rotating shaft 43 with these parts and members. Impeller 41
The blade 46 is a thick plate having a hollow body whose front and back surfaces are larger than other surfaces. Moreover, there are many small holes 47 in the hollow body. Therefore, the hollow blades 46 have air permeability and water permeability similarly to the rotary drum 44. In addition, a flow hole 48 is formed in the blade 46 so as to penetrate the blade 46 in a direction crossing the web surface . Distribution hole 48
There are also a number of small holes 47 in the peripheral wall (cylindrical body). A plurality of blades 46 of the impeller 41 are mounted on the outer peripheral wall (cylindrical wall) of the rotating drum 44 in a radial arrangement at equal intervals. The rotating drum 44 for this
In the outer peripheral wall, openings for mounting a plurality of blades 46 are formed at equal intervals in the circumferential direction. Feather 4
In the example of FIGS. 1 to 3 having eight sheets 6, the blades 46 are attached to the outer peripheral surface of the rotating drum 44 by inserting their roots into the openings of the rotating drum 44. The blades 46 protrude from the outer peripheral surface of the rotary drum 44. As means for attaching the blades 46 to the rotating drum 44, well-known means depending on the material, such as metal fittings, welding, bonding, and binding, are employed. The reason why the flow holes 48 are alternately shifted as shown in FIG. 3 for the respective blades 46 attached to the outer peripheral surface of the rotating drum 44 is that these holes 48 are formed in advance as such. The reason why the blade mounting opening is formed in the rotary drum 44 is to allow air, water, and the like to freely enter and exit between the blades 46 and the rotary drum 44. The opening for mounting the blade is also provided for each blade 4.
6 is also stabilized. In the internal space of the rotary drum 44 and the internal space of each blade 46 in the impeller 41, a filtering material 49 is inserted so as to fill the internal space. Normally, a part of the rotary drum 44 and a part of each blade 46 are formed with an entrance for taking in and out the filter material 49, and a lid for opening and closing the entrance is provided. In FIGS. 1 to 3, the illustration of the entrance and the lid is omitted. As can be understood from the above description, each blade 46 of the impeller 41 and the rotating drum 44
Can be said to have a continuous pore type porous structure.

[0022] or such as a rotating shaft 43 and the rotary drum 44 and blades 46 in the impeller 41 is made of metal, or made of synthetic resin (including FRP), or be made of these composite materials. The rotating shaft 43 is desirably made of metal to secure the strength. A carbon rod or the like can also be used as the rotating shaft 43. Rotary axis 4
3 may consist of a hollow shaft. The rotating drum 44 and the blades 46 may be made of any of the above materials, but are preferably made of a synthetic resin in terms of corrosion resistance and weight reduction. The rotating drum 44 and the blades 46 are also made of a perforated plate material or a mesh material. As an example, the rotating drum 44 is made of a perforated plate, and the blades 46 are made of a mesh material. As the filtering material 49, one or more of zeolite, crushed stone, silica, charcoal, coal, crushed ceramic (eg, crushed unburned brick or unburned tile), activated carbon, vegetable fiber, synthetic fiber, wood chip (wood chips), etc. Things are adopted.

[0023] In the example of FIGS. 1 and 2, respectively basin sides and lower reaches on both sides on the pair of elevators 21 aqueous 11 is mounted. Bearings 50 are respectively mounted on the support bases 22 of the elevators 21 in the upstream region, and the impeller 4
One rotating shaft 43 is supported at both ends by these bearings 50. The impeller 41 in the upstream region is rotatable by such support, and a part of the rotary drum 44 and each blade 46 are immersed in the water of the water system 11. Further speaking of the impeller 41 in the upstream region, this is a single type having only one set of the blades 46. An elevating controller 23 is mounted on a support table 22 of the elevator 21 on the left side of the upstream area (the left side in FIG. 1). The lift controller 23 is connected to control the lift 21. Since the lifting controller 23 in the illustrated example is mainly composed of an optical sensor, the tip of the device 23, which serves both as a light emitting end and a light receiving end, is directed to the water surface as shown in FIG. Upstream right side (Fig. 1
The elevator 21 (on the right side of FIG. 2) is synchronized with and synchronized with the elevator 21 on its left side, as is obvious. For that purpose, both elevators 21 use a wired or wireless signal transmission means (not shown) as a medium. A power generator 31 is mounted on a support 22 of the elevator 21 on the right side of the upstream area (the right side in FIG. 1). The power generator 31 is connected to the rotating shaft 43 because it generates power using the rotation of the impeller 41. Both elevators 21 in the downstream region also rotatably support the impeller 41 in the same manner as described above. Both elevators 2
The relationship between 1 and the elevation controller 23 is the same as above.
The downstream impeller 41 is different from the upstream impeller in that it is a twin type having two sets of blades 46 in a set. The elevator 21 on the right side of the downstream area (the right side in FIG. 1) differs from that of the upstream area in that a motor 32 is mounted on a support base 22 thereof. The motor 32 is for rotating the impeller 41 in the downstream area. Thus, the rotation shaft 43 of the downstream impeller 41 is connected to the output shaft of the motor 32. The solar cell panel 33 is installed on the ground in the downstream area. The electric power obtained by the solar cell panel 33 can be used for any of them. In the case of FIG. 1, the solar cell panel 33 is connected to the motor 32 to supply electric power. The motor 32 is
In addition, it is connected to the power generator 31 so as to receive power supply. Items for which the description of the impeller 41 in the downstream region and the configuration related to the impeller 41 are omitted are substantially the same as those in the upstream region. Both the upstream and downstream elevators 21
When these are operated by electric power, such power supply can be received from the power generation device 31 or the solar cell panel 33.

The rotary water purification device according to the present invention is 1 to
In the case of the embodiment illustrated in FIG. 3, the water quality of the water system 11 is preserved as described below.

[0025] In aqueous 11 in FIG. 1, the on fast flow basin impeller 41 is rotated by the flow on each blade 46. As the impeller 41 rotates, each blade 46 circulates in the water and in the air, and the rotating drum 44 also constantly changes the part immersed in the water. The rotating drum 44 and each blade 46 of the impeller 41 are formed of a hollow body having water permeability, and a filtering material 49 is filled in the internal space thereof. Such a layer of the filtering material 49 has a filtering function and an aeration function and also functions as a bed for microorganisms. Therefore, the impeller 41 in the upstream area of the water system 11
The water pollutants are trapped by the blades 4 and the blades 46, the trapped water pollutant microorganisms are decomposed by the microorganisms in the filter medium layer, and the water system 11 is re-aerated. In addition, the fact that the impeller 41 is dynamic means that the filter media rub against each other, so that the microbial film on the filter media surface peels off.
Metabolism of microorganisms living in the filter media layer is also actively performed. Thus, in the water system 11, the pollution of the water quality is prevented or the water quality is improved in the upstream area. When the amount of captured matter accumulated in each blade 46 of the impeller 41 increases, a part of the captured material may leak from each blade 46 and flow. As a countermeasure, the impeller 41 may be periodically cleaned.
No. 56762) is installed at the downstream (downstream side) of the water purification device to deal with this.

[0026] It is common to change in weather conditions and other causes for the water level of the water 11. In such a case, it is desirable to raise or lower the impeller 41 according to the fluctuating water level. 1 and 2 automatically adjusts the height of the impeller 41 via a lift controller 23 and a pair of lifts 21. 1 and 2, the elevation controller 23 constantly measures the water level of the water system 11, and when the water level of the water system 11 rises or falls so as to exceed a predetermined value or more, the elevation controller 23 sends the two elevators 21 Then, a drive control signal is input to the controller to raise or lower these support bases 22 by a predetermined amount to shift the impeller 41 to an appropriate height.

[0027] In FIGS. 1 and 2, the power generation device 31 connected to the rotary shaft 43 of the impeller 41 in the upstream area of the water system 11 is generating power. The electric power obtained by the power generator 31 is supplied to a motor 32 located downstream.

[0028] In aqueous 11 in FIG. 1, the flow of the downstream zone is very gentle. In such a basin, it is difficult to rotate the impeller 41 stably and steadily using the water flow. Therefore, the impeller 41 in the downstream region is rotated by the motor 32 that is supplied with power from the power generator 31 and the solar cell panel 33. When the impeller 41 in the downstream area is rotated, the contamination of the water quality is prevented and the water quality is improved in the downstream area in substantially the same manner as in the upstream area. The point that the height of the impeller 41 is automatically adjusted in accordance with the water level fluctuation of the water system 11 in the downstream area is the same as that in the case of the upstream area.

[ 0029 ] Among the embodiments of the rotary water purification apparatus according to the present invention, those illustrated in Figs. 4 and 5 differ from the previous example in the configuration of the elevator 21. The pair of elevators 21 in the illustrated example includes a floating base 24 having a large buoyancy and a plurality of guide rods 26, and guide holes 25 penetrating the floating base 24 up and down are formed at four corners of the floating base 24. I have. Each guide rod 26 penetrating through each guide hole 25 of the pontoon 24 is driven into the bottom of the water system 11 and rises high on the water surface, and the pontoon 24 floats on the water surface of the water system 11 by buoyancy. The impeller 41 of this example is also rotatably supported via a pair of bearings 50 mounted on the pontoons 24 of the lifts 21 as in the previous example. A motor 32 for rotating the impeller 41 is mounted on the pontoon 24 on the left side of FIG. 4 and is connected to a rotation shaft 43 of the impeller 41. The left float 24
A solar cell panel 33 for supplying power to the motor 32 is mounted on the upper side, and is connected to the motor 32. The power generator 31 is mounted on the floating base 24 on the right side in FIG. 4 and is connected to the rotating shaft 43 of the impeller 41.

The pontoon 24 is composed of a structure having a material and / or buoyancy buoyant. Buoyant materials have a lower specific gravity than water, as is self-evident. The buoyant structure is like an airtight hollow body or a foam (closed cell). For this, wood, synthetic resin, metal, and the like, and those made of a composite thereof are used.

[0031] FIG 4 the invention device in-Figure 5 is illustrated is the same as that of the precedent in that by rotating the impeller 41 and improving water quality or prevent contamination of water quality. Then, the solar cell panel 33 supplies power to the motor 32, and the power generation device 31 generates power as in the previous example. The power obtained by the power generator 31 can be used freely. In such embodiments, artificial waterways, rivers,
This is convenient when the equipment is installed on water away from the shore in lakes, marshes, and sea areas. 4 and 5, when the water level fluctuates, the floating bases 24 of the elevators 21 are connected to the guide rods 26.
Move up and down along with the buoyancy. Therefore, the height of the impeller 41 is always appropriately maintained.

The elevator 21 which is illustrated in Figure 6 mainly of barge 27 with buoyant. A plurality of winches 28 are mounted on the barge 27. The barge 27 is well known as a tugboat or workboat, and may be equipped with a propulsion means such as a screw. The plurality of winches 28 are electric or manual, and are fixed at four corners on the barge 27. An unillustrated anchor is attached to the tip of a wire (wire) 29 that is wound up or unwound by each winch 28. The pair of elevators 21 makes these barges 27 self-propelled to the installation location in the water area, or after towing with a tugboat,
The anchor at the tip of 9 is anchored and moored. A pair of bearings 50 are mounted on the two boats 27 as in the case of FIG. 4, and the impeller 41 is rotatably supported thereby. In the example of FIG. 6, the point that the power generator 31, the motor 32, the solar cell panel 33, and the like are mounted on each barge 27 is the same as the case of FIG. In addition, items whose description is omitted in the example of FIG. 6 are the same as or similar to the above-described embodiments.

The illustrated elevator 6 also inventive device that supports the impeller 41 (a pair) 21, and improving water quality or prevent contamination of the water by rotating the impeller 41. In the example of FIG. 6 as well, when the water level fluctuates, the barge 27 of each of the elevators 21 moves up and down, so that the height of the impeller 41 is always appropriately maintained. When each of the ropes 29 becomes tensed or relaxed due to the vertical movement of the two boats 27, each winch 2
8 is rotated in reverse (winding rotation) or forward rotation (rewinding rotation) to keep the tension of each cable 29 constant. When this is to be automated, an electric motor that can be turned on and off via a tension measuring device of the cable 29 is used as each winch 28.

[0034] FIG impeller 41 which is illustrated, the rotary drum 44 in the precedent of the impeller 41 are omitted, in which each impeller 46 described above is attached radially to the outer peripheral surface of the rotary shaft 43 . Therefore, the shaft center portion 42 of the impeller 41 in FIG. The impeller 41 illustrated in FIG. 8 also has the shaft center portion 42 including only the rotation shaft 43. The aforementioned blades 46 and other types of blades 51 are alternately arranged and radially attached to the outer peripheral surface of the rotating shaft 43. Other types of blades 51 are flat plate-shaped without holes. Such a blade 51 is made of, for example, synthetic resin, wood,
It is made of metal or a composite of these. The blade 51 may be hollow depending on the material. Each of the impellers 41 illustrated in FIGS. 7 and 8 is used in the same manner as in the previous example. In addition, in the case of the impeller 41 having the rotating drum 44 illustrated in FIGS. 1 to 4, two kinds of blades 46 and 51 may be radially attached to the outer peripheral surface of the rotating drum 44 in an alternate arrangement. As the rotating drum 44, a drum having a polygonal cylindrical shape can be adopted. In addition, the shapes of the blades 46 and 51 can be freely set.

The blades 46 of the impeller 41 is one having continuous pores type porous structure as described above. The following embodiments other than the illustrated example can be employed for the porous structure blade 46. One of the methods is to load a plate-shaped or sheet-shaped porous material into the hollow body when the outer shell of the blade 46 is formed of the above-described hollow body having water permeability or air permeability. One plate-shaped porous material is used when it is thick, and two or more sheets are used when it is thin. In the case of a sheet-like porous material, a plurality of porous materials are used by overlapping. Specific examples of the plate-like porous material and the sheet-like porous material include a wire mesh, a synthetic resin mesh, a net woven with mesh yarn, a synthetic resin continuous pore foam plate, an artificial pumice plate having continuous pores, and a synthetic resin. Perforated sheet made of stainless steel and coarse cloth. The other is to configure the porous structure blade 46 by a porous plate. In this case, the perforated plate is made of the thick porous material alone. Therefore, when the strength of the perforated plate is insufficient, a reinforcing material such as a frame, a lattice, or a bar is attached thereto, and when the strength of the perforated plate is sufficient, such a reinforcing material is omitted. Still another is laminating the plate-like porous material or the sheet-like porous material and bonding and / or bonding.
Alternatively, the perforated blades 46 are constituted by the thick perforated plates obtained by combining them with the stoppers. Also in this case, the necessity of the reinforcing material is determined depending on the strength of the perforated plate. As can be understood from the above description, the blade 46 of the impeller 41, that is, the continuous pore type porous structure blade 46 is constituted by a continuous pore plate in an embodiment (not shown). Such porous structural blades 46, the strength of the blade is stable as compared with those using filtering material 49, easy to handle, easy to make even artificial. For an impeller 41 mentioned in this paragraph can be adopted each technical matters described above in the range of compatibility. In addition, matters that have been omitted from the description of the impeller 41 described in this paragraph are practically the same as or similar to the contents described above.

The rotary drum 44, paragraph numbers if this is one having a porous structure of continuous pores type [0035]
The embodiment as described above can be adopted. When the embodiment as described in paragraph [ 0035 ] is adopted in the rotating drum 44, the above-described porous material / porous plate used alone or in a plurality is formed in a columnar or cylindrical shape. Among these, the cylindrical porous materials superposed inside and outside have different diameters.

[ 0037 ]

The rotary water purification apparatus according to each claim of the present invention has the following effects.

The apparatus of claim 1 wherein is that the porous structural blades of continuously porous types in the impeller becomes implantation layer quality filter and microorganisms of water contaminants. With such a device, water pollutants can be captured and decomposed (using microorganisms) simply by rotating the impeller using the water flow, and at the same time, the metabolism of microorganisms can be activated and the treated water area can be increased. Or re-aeration. Therefore, the cleanliness of water quality can be improved by the synergistic effect of these. In addition, with regard to this device, which is mainly composed of low-cost and simple-structured impellers, production costs and equipment costs can be kept low, including large-scale ones, and equipment, maintenance and management are easy. Therefore, it is expected that this will be widely spread. The apparatus according to the first aspect of the present invention can be rotated using natural energy, so that almost no operating cost is required, and power generation can be performed by using the rotating energy of the impeller. Obtained at the same time. The apparatus according to claim 1, further comprising a porous structure wing.
A flow hole penetrating the root increases the surface area of the blade
Because of this, the permeability of water and air to the porous structure
The effect increases. This means that the activation and propagation of aerobic bacteria
Breeding is promoted and oxygen uptake into the water is sufficient.
That is. In addition, the flow holes are the
Make it easier to set the resistance of the blades against weight and running water
You.

[ 0039 ] In the apparatus according to the second aspect, the porous impeller of the impeller is formed of a hollow body containing a filtering material. Therefore, in addition to the effects described in paragraph [ 0038 ], the metabolism of microorganisms is activated. And the water purification effect can be enhanced.

[ 0040 ] In the apparatus according to the third aspect, since the porous structure blade of the impeller is formed of a continuous perforated plate, the paragraph number [ 0].
[038 ] In addition to the effects as described in [ 038 ], there is an effect that the strength of the blade is stable, good and easy to handle, and it is easy to make artificially.

The apparatus according to claim 4, wherein the rotary drum is in the axial center portion of the impeller having a porous structure of continuous pores type. Since the same purification as described above is performed in the rotary drum, the ability to purify water quality is higher.

The device according to claim 5 has the blade is attached to the outer peripheral surface of the impeller rotary shaft. This is because most of the blades of the impeller except for the rotating shaft are blades, so that the ratio of the blades is large. Impellers with a large percentage of blades are suitable for deep water systems and are not significantly affected by fluctuations in water level.

The apparatus of claim 6, since the impeller is supported via the elevator, even the water level of the water-based to be purified target is changed by weather conditions and other, and vary the height of the impeller It can follow the water level. Therefore, the impeller can always be maintained at an appropriate level.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an embodiment of the device of the present invention.

FIG. 2 is a vertical sectional front view of a main part of the apparatus shown in FIG. 1;

FIG. 3 is a vertical sectional side view of an impeller in the apparatus of FIG.

FIG. 4 is a plan view schematically showing another embodiment of the device of the present invention.

FIG. 5 is a vertical sectional front view of the elevator in the apparatus of FIG. 5;

FIG. 6 is a front view schematically showing another embodiment of the elevator of the apparatus of the present invention.

FIG. 7 is a vertical sectional side view schematically showing another embodiment of the impeller of the apparatus of the present invention.

FIG. 8 is a longitudinal sectional side view schematically showing still another embodiment of the impeller of the apparatus of the present invention.

DESCRIPTION OF SYMBOLS 11 Water system 21 Elevator 22 Support stand 24 Floating stand 25 Guide hole 26 Guide rod 27 Barge 28 Winch 29 Rope 41 Impeller 42 Shaft center part 43 Rotating shaft 44 Rotating drum 45 Hole 46 Blade 47 Hole 48 Distribution Hole 49 Filter media 50 Bearing

Claims (7)

[Claims] 1. A rotatable impeller having an axial portion and a plurality of blades, each of which is radially mounted on the outer peripheral surface of the axial portion, and at least one of the impellers. Wherein the blades have a continuous pore type porous structure. 2. The rotary water purification apparatus according to claim 1, wherein the porous structure blade of the impeller is constituted by a water-permeable hollow body containing a filtering material. 3. The rotary water purification apparatus according to claim 1, wherein the porous impeller of the impeller is constituted by a continuous pore plate. 4. The rotary drum according to claim 1, wherein a rotary drum having a continuous pore type porous structure is provided at an axis of the impeller, and each blade is mounted on an outer peripheral surface of the rotary drum. Water purification device. 5. The rotary water purification apparatus according to claim 1, wherein the rotary shaft is located at an axis of the impeller, and each blade is attached to an outer peripheral surface of the rotary shaft. 6. The rotary water purification apparatus according to claim 1, wherein a flow hole penetrating the porous structure blade in the front-rear direction is formed in the blade. 7. The rotary water purification apparatus according to claim 1, wherein the impeller is supported via an elevator.