JP3573845B2 - Water purification device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water purification device. In particular, the present invention relates to a water purification apparatus that adheres and supports aquatic organisms (for example, bacteria, fungi, algae, protozoa, or micrometamorphous animals) and utilizes the water purification action of the underwater organisms.
[0002]
[Prior art]
One of the means for purifying water quality of rivers, lakes, or the sea is to use various underwater organisms. When various organisms, from microorganisms and algae to fish, inhabit rivers, lakes, or the sea, rivers are naturally purified by their biological cycle.
In particular, many small and medium-sized rivers flowing in urban areas are covered with concrete and concrete blocks on the riverbed and riverside slopes, and are isolated from the natural environment. This is very important. For example, a net to which microorganisms or algae easily adhere, a fibrous porous body made of a nonwoven fabric, a lattice plate, or a columnar body or a cylindrical body three-dimensionally formed so as to increase the surface area is provided in a river. Can be considered.
However, when a structure is installed in a river, a part of the structure is exposed to the air when the water level falls due to the rise and fall of the water level of the river, and the propagation of aquatic organisms attached to that part is inhibited. There is. In addition, when large garbage is caught or the river rises due to the effects of heavy rain, etc., such structures may prevent the flow of water or raise the water level of the upstream area from the installation location, Care must be taken not to increase the damage by providing such a structure.
In addition, when a structure is installed in a lake or marsh, the natural water flow due to the inflow or outflow of a river into a lake or marsh, the inflow of a river into the sea, or the ebb and flow of the tide, or a purification treatment, etc. Since there are various water flows such as the generated artificial water flows, problems similar to those of rivers occur.
[0003]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to substantially utilize the water purification action of aquatic organisms when the water level of a river, a lake, a marsh, or the sea is within a normal fluctuation range. In addition, a water purification device for rivers, lakes, marshes, seas, etc., which does not cause obstacles to flowing water when the flow velocity or flow rate of rivers and the like temporarily increases due to heavy rain etc. Is to do.
[0004]
[Means for Solving the Problems]
The above object is according to the present invention
(1) having a joint only at the center, the nonwoven fabric layer and possibly the foam layer extending radially from the center joint, and the respective densities of the nonwoven fabric layer and possibly the foam layer Radially from fine to coarse from part to periphery and optionally containing micro-foam particles carried on the non-woven fibers of said non-woven fiber layer and / or contained in the foam layer Three-dimensional molded body (however, this radial three-dimensional molded body shall include at least one of a foam layer and fine foam particles),
(2) A water purification device comprising: a connecting means attached to the radial three-dimensional molded body and attachable to a support disposed on a water floor, wherein the radial three-dimensional molded body floats the molded body in water. This can be achieved by the water purification apparatus described above, which has a sufficient amount of the foam layer and / or the micro foam particles.
[0005]
The water purification device of the present invention can be used for purification of water in rivers, lakes, marshes, seas, and the like, particularly in places where there is a water flow (for example, rivers). As used herein, the term "river" includes all natural or artificial waterways through which water flows. Specifically, rivers, especially small and medium-sized rivers (preferably, at least a portion of A river covered with a concrete block or the like), a canal, or a moat. The “lake” includes all water areas where water is naturally or artificially stored inside the land, and specific examples thereof include lakes, ponds, swamps, reservoirs, and pools. The “sea” includes the inside of a harbor, the inside of a bay, or the open sea. In the following description, rivers, lakes, marshes, or the sea may be collectively referred to as “rivers, etc.”, and this “rivers, etc.” includes all waterways through which water flows and water bodies in which water is stored. Specifically, the river, the lake, the sea, and the like are included.
In the apparatus of the present invention, when immersed in water, microorganisms (for example, bacteria, fungi, algae, protozoa, and micro metazoans) useful for purifying water quality of rivers and the like can be attached, and water quality can be improved by these microorganisms. The above-mentioned radial three-dimensional molded body is used as a part for actually performing the purification, and the radial three-dimensional molded body is further attached to a support fixed to a riverbed or the like by connecting means.
[0006]
The following three types of radial three-dimensional molded bodies are used in the apparatus of the present invention.
(A) A joint portion is provided only at the center, a nonwoven fabric fiber layer and a foam layer extend radially from the center joint portion, and the respective densities of the nonwoven fabric layer and the foam layer are from the center joint portion to the peripheral portion. Radially three-dimensionally shaped body (hereinafter, may be referred to as (A) shaped body) that becomes denser and coarser toward the surface;
(B) a nonwoven fabric having a joint only at the center, a nonwoven fabric fiber layer extending radially from the center joint, and the density of the nonwoven fabric layer becoming denser and coarser from the center joint to the periphery; A radial three-dimensional molded body [hereinafter sometimes referred to as a (B) molded body], including a molded body and fine foam particles supported on nonwoven fabric fibers of the nonwoven fabric three-dimensional molded body;
(C) a joint portion only at the center, the nonwoven fabric fiber layer and the foam layer radially extend from the center joint portion, and the respective densities of the nonwoven fabric fiber layer and the foam layer are from the center joint portion to the peripheral portion; , And / or a radial three-dimensionally shaped article [hereinafter, referred to as (C)], which includes fine foam particles supported on the nonwoven fibers of the nonwoven fiber layer and / or contained in the foam layer. ) Sometimes referred to as a molded article)
It is.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
For example, as shown in FIGS. 1 and 2, the purification device 1 according to the present invention includes a radially three-dimensional molded body 2 and a connecting means 3, and is fixed to a riverbed 4 and is provided with a support 5 (or 5 a, 5 b). When mounted on the radial solid molded body 2, the radial solid molded body 2 carries a sufficient amount of the foam layer and / or the fine foam particles to float the molded body in the river water 6. Floating with the flowing water, with the support 5 as a fulcrum.
[0008]
Among the three-dimensional shaped bodies of the present invention, the (B) molded body 2 has a joining portion 21 only at its center, as shown in FIG. 3, for example. And the density of the nonwoven fabric fiber layer 22 gradually changes from dense to coarse continuously from the central joint portion 21 to the peripheral portion 23, and furthermore, the microfoaming occurs on the nonwoven fabric fibers of the three-dimensional molded body made of the nonwoven fabric. It carries body particles.
As described in JP-A-6-212544 and JP-A-6-257050, for example, the three-dimensional molded body made of nonwoven fabric may be formed into a single or a plurality of laminated nonwoven fabric sheets at intervals. (Solid line or dashed line) or in a point-like manner, the joining portion is formed by, for example, sealing means (for example, heat sealing, ultrasonic sealing or high frequency sealing), bonding means (for example, bonding with an adhesive), or suturing means (for example, To form a compressed portion, and cut the nonwoven fabric sheet between these linear or dotted joint-compressed portions.
[0009]
Therefore, in the nonwoven fabric three-dimensionally formed body thus obtained, the nonwoven fabric layer strongly compressed at the joint is released from the compression as it separates from the joint, and the density gradually becomes coarse. FIG. 3 shows a molded body in which a nonwoven fabric layer 22 having a density gradually increasing from dense to coarse and an interlayer gap 24 having a gap which is continuously increased gradually therebetween are formed. By adjusting the thickness of the sheet material and the distance between the joints, a complete columnar body consisting of only the nonwoven fabric layer without the interlayer gap 24 can be obtained. Further, a molded article having a spherical shape (when the joint is at the center of the sphere) can be obtained. Further, these cylindrical or spherical shaped bodies may be cut and used in place of another shape. In the three-dimensional molded product made of nonwoven fabric having the interlayer gap 24, the density of the nonwoven fabric layer gradually increases as the distance from the bonding portion 21 to the peripheral portion 23 increases, and the density substantially increases in the peripheral portion 23 further away from the bonding portion 21. However, these are also included in the three-dimensional molded product made of the nonwoven fabric of the present invention and the radial three-dimensional molded product obtained from the three-dimensional molded product made of the nonwoven fabric.
[0010]
Examples of the fibers constituting the nonwoven fabric fiber layer 22 used in the three-dimensional molded product made of the nonwoven fabric include fibers made of a thermoplastic resin such as polyolefin, polyester, polyamide, polyvinyl chloride, or polyvinylidene chloride, or a thermoplastic resin of these. It is preferable to use a composite fiber containing, for example, when the center joint portion 21 is formed by sealing means such as heat sealing, since fusion of these fibers can be used. In particular, when there is a demand for imparting hydrophilicity to the molded body (B) or imparting a carbon source as a nutrient source such as microorganisms, fibers such as viscose rayon and cotton are contained. Is also good. The fineness of these fibers is desirably 5 denier or more, more preferably 10 denier or more. If the fineness is too small, clogging tends to occur. The apparent density of the nonwoven fabric sheet before the formation of the central joint 21 is 0.2 g / cm. ³ When the apparent density is higher than this, clogging is likely to occur. The means for forming the nonwoven fabric sheet is not particularly limited, and a fiber-bonded nonwoven fabric, a binder-bonded nonwoven fabric, a mechanically entangled nonwoven fabric, or the like is used.
[0011]
In addition, the number of laminated nonwoven fabric sheets is 2 to 10, more preferably 3 to 6 (the number of nonwoven fabric fiber layers after being formed into a three-dimensional molded body made of nonwoven fabric is doubled to 6 to 12 from the center joint. Is suitable, and the thickness of the nonwoven fabric sheet is suitably 2 to 20 mm, more preferably 3 to 15 mm. The nonwoven fabric fiber layer 22 is a polyvinyl pyridine-styrene copolymer quaternary chloride, polyvinyl alcohol having a styrylpyridinium group, polyethyl polyamine, polyethylene imine, polyamide-epichlorohydrin, polyallylamine, polycation-acrylic copolymer, Enhanced microbial adsorption ability by treatment with a microbial-adsorbing polymer such as polypiperidine copolymer or a cationizing agent, or by attaching a porous powder such as activated carbon or diatomaceous earth Is desirable. In particular, when a porous powder is adhered, it is preferable because not only the adsorptive power is increased but also the fiber can be prevented from being deteriorated by ultraviolet rays or the like by covering the fiber.
[0012]
Since the three-dimensional molded body made of the nonwoven fabric is made of the fibrous material, it does not float in water by itself and sinks to the bottom of the water. For example, if one end is fixed to the bottom of the water and placed in the water, the water may temporarily float in the flowing water due to the resistance received from the flowing water, but does not float in the water but stays still in a state of sinking in the water bottom. On the other hand, in the radial three-dimensional molded article of the present invention, the molded article (B) has a sufficient amount of fine foam particles supported on nonwoven fabric fibers to float the molded article in water. In addition, even when the water level of a river or the like fluctuates, and particularly when the water level is lowered, (B) the amount of the fine foam particles that can maintain the state in which almost the entire molded article is constantly immersed in water is increased. It is preferred to carry it. Examples of the fine foam particles include hollow inorganic particles such as foamed glass beads and shirasu balloon, and hollow organic particles having a thermoplastic resin as an outer wall and containing a heat-expandable substance (for example, “Micros” manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.). Fair: hollow organic particles having a vinylidene chloride-based copolymer as an outer wall and containing isobutane) can be used. These micro-foam particles, as they are or after thermal expansion, are bonded to a non-woven fabric using a latex-based adhesive or the like, or are applied to a non-woven fabric using a latex-based adhesive or the like and then heated. By being thermally expanded and adhered, the nonwoven fabric can be supported.
[0013]
The adhesion of the fine foam particles to the nonwoven fabric fibers may be performed in the state of the nonwoven fabric three-dimensional molded product, or may be performed in the state of the nonwoven fabric sheet before the nonwoven fabric three-dimensional molded product. In addition, the characteristics of the fine foam particles may extend to the entire non-woven fabric three-dimensional molded body, but may be a part of the molded body as long as appropriate buoyancy is obtained. Of the nonwoven fabric fiber layers constituting the three-dimensional molded body, only a specific fiber layer may support the fine foam particles. Such a structure can be manufactured, for example, by attaching microfoam particles to only a specific number of nonwoven sheets among a plurality of nonwoven sheets used as a material of a three-dimensional molded article made of nonwoven fabric. Further, the fine foam particles may be supported only on one surface of the nonwoven fabric fiber layer constituting the nonwoven fabric three-dimensional molded body. Such a structure is, for example, a nonwoven fabric sheet used as a material of the nonwoven fabric three-dimensional molded body. On the other hand, it can be produced by attaching fine foam particles only to the surface. In addition, it is possible to adopt various supporting forms such as supporting the fine foam particles only on the upper part (in the water surface direction) of the formed radial three-dimensional molded body.
[0014]
In the radial three-dimensional molded article of the present invention, the (A) molded article has a structure having a foam layer instead of the fine foam particles in the (B) molded article described above, for example, as shown in FIG. It has a structure in which a part of a plurality of nonwoven fabric fiber layers 22 constituting a molded article is changed to a foam layer and does not carry fine foam particles. Therefore, the molded article (A) can be prepared by replacing at least one of a plurality of nonwoven sheets used for preparing the molded article (B) with a foam sheet. For example, a non-woven fabric sheet and a foam sheet are alternately laminated in order, and then, for example, a plurality of laminated sheets according to the methods described in JP-A-6-212544 and JP-A-6-257050. In the form of a line (solid line or broken line) or a point, the joint is formed by, for example, sealing means (for example, heat seal, ultrasonic seal or high-frequency seal), bonding means (for example, bonding with an adhesive). Alternatively, it can be manufactured by providing a compressed portion by forming with a suturing means (for example, sewing with a sewing machine or the like), and cutting the laminate between these linear or dotted joint-compressed portions. . In the three-dimensional molded body thus obtained, the non-woven fabric layer and the foam layer strongly compressed at the joint are released from the compression as they separate from the joint, and the density gradually becomes coarse. Similarly to the molded article (B), the (A) molded article has a nonwoven fabric layer and a foam layer whose density gradually increases from dense to coarse, and an interlayer gap which gradually increases between them is formed. In some cases, a complete columnar body consisting only of a nonwoven fabric layer and a foam layer without an interlayer gap may be obtained. Further, a molded article having a spherical shape (when the joint is at the center of the sphere) can be obtained. Further, these cylindrical or spherical shaped bodies may be cut and used in place of another shape. In the case of the radial three-dimensional molded body having an interlayer gap, the density of the nonwoven fabric layer and the foam layer may be substantially constant in the peripheral portion away from the joint, and these are also included in the radial three-dimensional molded body of the present invention. included.
[0015]
The nonwoven fabric sheet used for preparing the molded article (A) can be the same as the nonwoven fabric sheet used for preparing the molded article (B). The foam sheet used for preparing the molded article (A) is preferably a sheet having closed cells. For example, a sheet of synthetic resin foam having closed cells, for example, foamed polystyrene, foamed polyethylene, and foamed polyurethane; fiber (particularly, nonwoven fabric) reinforced foam in which fibers are dispersed in a foam or a nonwoven fabric is impregnated with a foam Body: a laminate obtained by laminating one nonwoven fabric layer and one foam layer; or a laminate obtained by laminating two nonwoven fabric layers and one foam layer sandwiched therebetween. There can be.
The non-woven fabric layer used in the laminate has a function of supplementing the ability of the foam alone to adhere to and support aquatic organisms, and the laminate has a radial shape while maintaining the ability to support aquatic organisms. Buoyancy can be given to the three-dimensional molded body.
[0016]
The fibers constituting the nonwoven fabric layer used in the molded article (A) are the same as the fibers used in the three-dimensional molded article made of the nonwoven fabric of the molded article (B) (preferably a thermoplastic resin or a thermosetting resin thereof). Composite fibers containing a plastic resin). In particular, when the center joint is formed by a sealing means such as a heat seal, the fusion of these fibers can be used. In particular, when there is a demand to impart hydrophilicity to the molded article (A) or to impart a carbon source as a nutrient source such as a microorganism, fibers such as viscose rayon and cotton may be contained. Good. The fineness of these fibers is desirably 5 denier or more, more preferably 10 denier or more. If the fineness is too small, clogging tends to occur. The apparent density of the nonwoven fabric sheet before forming the center joint is 0.2 g / cm. ³ When the apparent density is higher than this, clogging is likely to occur. The means for forming the nonwoven fabric sheet is not particularly limited, and a fiber-bonded nonwoven fabric, a binder-bonded nonwoven fabric, a mechanically entangled nonwoven fabric, or the like is used.
[0017]
(A) When forming a molded article, the total number of laminated layers of the nonwoven fabric sheet and the foam sheet is 2 to 10, more preferably 3 to 6 (the nonwoven fabric layer and the foam after being formed into the radial three-dimensional molded article). The total number of layers is suitably 6 to 12 times as counted from the center joint), and the thickness of the nonwoven fabric sheet is 2 to 20 mm, more preferably 3 to 15 mm, and the thickness of the foam sheet is 2 to 40 mm. And more preferably 3 to 30 mm. The ratio between the nonwoven fabric sheet and the foam sheet is appropriately set depending on the thickness and density of each sheet, the required buoyancy, and the like, but is usually desirably in the range of 2: 8 to 8: 2. The laminated structure of the nonwoven fabric sheet and the foam sheet is not particularly limited, but it is preferable that the nonwoven fabric sheet and the foam sheet are alternately laminated. The nonwoven fabric fiber layer and the foamed layer may be treated with a microorganism-adsorbing polymer or a cationizing agent, or by attaching a porous powder to the nonwoven fabric fiber layer and the foamed layer, as in the case of the molded article (B). It is desirable that the ability to adsorb microorganisms is enhanced.
The molded article (A) contains a foam layer in an amount sufficient to float the molded article in water. In addition, even when the water level of a river or the like fluctuates, and particularly when the water level is lowered, (A) the molded article contains a foam layer in an amount capable of maintaining almost a state of being constantly immersed in water. Preferably.
[0018]
The molded article (C) has a structure in which fine foam particles are further supported on the molded article (A). As the type of the fine foam particles and the supporting method, the type of the fine foam particles and the supporting method described for the molded article (B) can be used. Further, the fine foam particles can be supported on the nonwoven fabric layer and / or the foam layer or a part thereof. (C) The molded article only needs to contain a sufficient amount of fine foam particles and a foam layer to float the molded article in water. In addition, even when the water level of a river or the like fluctuates, and particularly when the water level is lowered, (C) an amount of the fine foam particles capable of maintaining a state in which almost the entire molded article is constantly immersed in water; It preferably contains a foam layer.
[0019]
The radial three-dimensional molded body thus obtained has a fiber structure having a diversified and continuously changing density distribution in any of the (A) molded body, the (B) molded body, and the (C) molded body. Because it contains, it is suitable for carrying various underwater organisms. Further, the radial three-dimensional molded body is easy to manufacture and has excellent weather resistance. Further, it is very easy to apply buoyancy and adjust the degree of buoyancy. Furthermore, since the radial three-dimensional molded body itself has a sufficient buoyancy, the structure can be simplified and the flow of flowing water is less obstructed as compared with a water purification means in which a float is connected to a bioadhesive carrier. .
The shape and size of the radial three-dimensional molded body, furthermore, the method of arranging the purifying apparatus including the three-dimensional molded body, if the purifying apparatus does not substantially obstruct running water when arranged in a river, There is no particular limitation, and it can be appropriately selected according to the environmental conditions or the purpose of installing the purification device of the present invention. For example, only one purification device including a relatively large three-dimensional molded body may be arranged in the transverse direction of the river, but a plurality of purification devices including relatively small three-dimensional molded bodies are scattered in the river. It is preferable to make it (see FIG. 1). For example, a plurality of the purifiers of the present invention may be arranged in a row at intervals on a straight line from one end to the other end in the transverse direction of the river, and in some cases, a plurality of such purifiers may be arranged in the flow direction. Can be.
[0020]
The purifying device of the present invention can be used while being aerated as needed. When air is supplied to the radial three-dimensional molded body of the purification device via a pipe or the like, oxidation is promoted, and bacteria and algae easily adhere to the surface of the radial three-dimensional molded body, and larger algae propagate on them. In addition, by the supply of air, catalytic oxidation is performed to increase the amount of dissolved oxygen, thereby purifying river water.
[0021]
In addition, as shown in FIG. 4, the purification device of the present invention connects a plurality of radially three-dimensional molded bodies 2 in series from a riverbed to a river surface via a series connection means 7 (for example, a thread, a string, a wire, a tape, etc.). They may be connected. In this case, since each radial three-dimensional molded body 2 has buoyancy, when the water level is high, the connected radial three-dimensional molded bodies 2 are arranged in a line from the riverbed to the water surface, and all the radial three-dimensional molded bodies 2 are arranged. Is entirely immersed in water. On the other hand, even if the water level drops, as shown in FIG. 5, the upper radial three-dimensional molded body 2a is also substantially immersed in water while floating near the water surface, and the lower radial solid body 2a is immersed in water. Each of the three-dimensional molded bodies 2 is preferably immersed in water.
[0022]
In the purification device 1 of the present invention, the connecting means 3 is one which has one end connected to the radial solid molded body 2 and the other end detachably attached to the support 5 fixed to the riverbed. There is no particular limitation. In addition, the connecting means 3 allows the radial three-dimensional molded body 2 to float in flowing water while changing its position due to its own buoyancy and resistance received from flowing water, and without being detached naturally from the support 5 and flowing away. Has the effect of not interfering with Therefore, for example, even if large garbage, driftwood, or the like flows and collides with the radial three-dimensional molded body 2, it can be avoided without being entangled with them. Furthermore, when the flow velocity of the river temporarily increases due to heavy rain or the like, the river lays almost parallel to the riverbed, and does not hinder the flowing water.
Further, for the same reason, the purification device of the present invention hardly hinders movement (for example, up and down) of fish and the like in rivers.
In addition, at the time of flooding, etc., relatively large lattice plates and nets, which have been proposed as water purification devices, hit the riverside revetment or bridges when they are washed away, and destroy them. Due to this, there is a possibility that larger refuse is accumulated and destroyed by resistance of flowing water or the like. However, the purifying apparatus according to the present invention has a small and soft radial three-dimensional molded body even when the connecting means or the like is broken and the radial three-dimensional molded body is detached from the support, for example, at the time of rising water such as a flood. Because they float on the water, they do not collide and destroy seawalls, bridges, etc., and do not obstruct the flow of rivers. In addition, it is hard to be caught on a revetment such as a river or a bridge or the like, and does not hinder these structures.
[0023]
As the connecting means, for example, a thread, a string, a wire, a band, a cut ring, a chain, or the like can be used. These connecting means form a hole in a part of the radial solid molded body, pass through the hole, use a connecting pin such as a safety pin, a clip, a clothespin, bond with an adhesive, heat seal. By suturing, it can be attached to the radial three-dimensional molded body. Preferably, the connecting means is detachable from the support so that the radial three-dimensional molded body can be replaced.
The support for attaching the connecting means may be directly fixed to a riverbed or the like, or may be a metal ring such as a concrete block, a bar, a flat plate or a net-like metal frame 5b as shown in FIG. The concrete block 5b may be fixed, and the concrete block, the rod-shaped, the flat plate-shaped or the net-shaped metal frame 5b, etc. may be arranged on the riverbed 4.
[0024]
The radially shaped body 2 can be held in a state of being floated in the river 6 by the connecting means 3 and optionally the series connecting means 7, and furthermore, the rotatable connection as shown in FIGS. 1 and 2. By providing the tool 8, it may be mounted so that it can freely rotate about the axis of the connecting means 3 and optionally the serial connecting means 7. The rotatable connecting member 8 is not particularly limited as long as it can freely rotate the radial three-dimensional molded body 2 in any rotational direction about the axis. For example, the rotatable connector 8 shown in FIG. And a universal connecting tool. The rotatable connection tool 8 shown in FIG. 6 includes a pair of internal connection pieces 83 each including a connection ring 81 as a connection end, a spherical rotatable core 82, and a shaft portion 86 for directly connecting them. And a hollow isolation connection cover 84 having an elliptical cross section as an external connection piece that includes and covers the rotatable core 82 therein. The rotation direction diameter of the shaft portion 86 of the inner connecting piece 83 is smaller than the rotation direction maximum diameter of the rotatable core 82 directly connected thereto. The isolation connection cover 84 is provided with two openings 85 having an opening diameter smaller than the maximum diameter in the rotation direction of each rotatable core 82 and larger than the maximum diameter in the rotation direction of each shaft portion 86 so as to face each other. ing. Each of the internal connection pieces 83 has an opening provided in the isolation connection cover 84 such that the rotatable core 82 is located inside the isolation connection cover 84 and at least a part of the shaft portion 86 and the connection ring 81 are exposed to the outside. 85. Each inner connecting piece 83 can rotate freely in any rotational direction, with the rotatable core 82, the shaft 86 and the connection ring 81 integrally around the axis of the shaft 86. Also, the isolation connection cover 84 can rotate independently of the respective rotational movement of the internal connection piece 83.
[0025]
The size of the rotatable core 82 is larger than the opening diameter of the opening 85 provided in the isolation coupling cover 84 so that the rotatable core 82 and the isolation coupling cover 84 are not separated from each other. Any size is acceptable as long as smooth rotation of the rotatable core 82 is not hindered. The shape of the rotatable core 82 may be any shape that does not hinder smooth rotation in the isolation connection cover 84, and includes, for example, a sphere, an elliptical sphere, a prism, a cylinder, a pyramid, a cone, or a combination thereof. be able to. The rotatable connection tool 8 is connected between the support tool 5 and the connection means 3, between the connection means 3 and the radial three-dimensional molded article 2, and between the radial three-dimensional molded article 2 and the serial connection means 7 via the connection ring 81. One or a plurality may be provided between the regions in the middle of the connecting means 3 (see FIGS. 1 and 2) and / or in the middle of the series connecting means 7. The rotatable connection tool 8 shown in FIG. 6 has a connection ring 81 as a connection end. Other shapes of the connection end include, for example, a string, a rod, a sphere, a column, a hook, and the like. be able to. By providing the rotatable connecting member 8, the radial three-dimensional molded body 2 floating in the river receives the resistance of the flowing water of the river and rotates around the axis in the river. In general, the attachment of organisms useful for water purification tends to be biased toward the upstream region of the radially shaped body, but the radially shaped body rotates in a river, so that the shaped body is uniformly spread over the entire body. Adhesion of useful organisms becomes possible, and the purification ability of river water quality is improved. In addition, even when garbage or dust coming from the upstream comes into contact with the radially shaped body, the radially shaped body can rotate and flow downstream, so that garbage etc. accumulate and hinder the flow of rivers. Nor.
[0026]
【The invention's effect】
The purification device according to the present invention can be manufactured easily and can be easily attached to rivers and the like. When the water level of the river is within the normal fluctuation range, the whole is substantially immersed in the running water of the river, so that the river purifying action by the aquatic organisms can be used, and garbage and the like are hardly caught, Even if the flow velocity of the river is temporarily increased due to heavy rain, etc., there is no interruption of the flowing water. Also, there is almost no hindrance to the movement of fish and the like in rivers (for example, going up and down).
In addition, at the time of flooding, etc., relatively large lattice plates and nets, which have been proposed as water purification devices, hit the riverside revetment or bridges when they are washed away, and destroy them. Due to this, there is a possibility that larger refuse is accumulated and destroyed by resistance of flowing water or the like. However, the purifying apparatus according to the present invention has a small and soft radial three-dimensional molded body even when the connecting means or the like is broken and the radial three-dimensional molded body is detached from the support, for example, at the time of rising water such as a flood. Because they float on the water, they do not collide and destroy seawalls, bridges, etc., and do not obstruct the flow of rivers. In addition, it is hard to be caught on a revetment such as a river or a bridge or the like, and does not hinder these structures.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a state in which a plurality of purification devices of one embodiment of the present invention are disposed in flowing water of a river.
FIG. 2 is a side view schematically showing a state in which one purification device shown in FIG. 1 is disposed in flowing water of a river.
FIG. 3 is a perspective view of one embodiment of a radial three-dimensional molded body used in the purification device of the present invention.
FIG. 4 is a perspective view schematically showing a state in which a purification device according to still another embodiment of the present invention is provided in a river.
FIG. 5 is a perspective view schematically showing a state of the purification device shown in FIG. 4 at the time of water shortage.
FIG. 6 is a cross-sectional view of a rotatable connection tool that can be used in the purification device of the present invention, cut along a plane including a rotation axis thereof.
[Explanation of symbols]
1. Purification device; 2. Radial three-dimensional molded body; 3. Connection means;
4 · · Riverbed; 5 · · · Supports · 6 · · River water; 7 · · · Series connection means;
8. Rotating connector; 9. Float-coupled composite; 10. Float;
11. Three-dimensional molded body made of non-woven fabric; 21 Central joint; 22 Fiber layer of non-woven fabric
23. Peripheral part; 24. Interlayer gap;
81 connection ring; rotatable core; 83 internal connection piece;
84 · · · isolation connection cover; 85 · · · opening; 86 · · · shaft;

Claims (3)

(1) A joint portion is provided only at the center, a nonwoven fabric fiber layer and a foam layer extend radially from the center joint portion, and the respective densities of the nonwoven fabric fiber layer and the foam layer are from the central joint portion to the peripheral portion. A water purification device comprising: a radial three-dimensional molded body that becomes denser and coarser toward the surface; and (2) connecting means that is attached to the radial three-dimensional molded body and that can be attached to a support disposed on a water bottom. The above water purification device, wherein the radial three-dimensional molded body has a foam layer in an amount sufficient to float the molded body in water. (1) A three-dimensional nonwoven fabric having a bonding portion only at the center, a nonwoven fiber layer extending radially from the center bonding portion, and a density of the nonwoven fiber layer gradually increasing from the center bonding portion toward the periphery. A radial three-dimensional molded body including a molded body and fine foam particles supported on nonwoven fabric fibers of the nonwoven three-dimensional molded body; and (2) a support attached to the radial three-dimensional molded body and disposed on a water bottom. A connecting means attachable to a tool, wherein the radially three-dimensional shaped body carries on the non-woven fabric fibers a sufficient amount of fine foam particles to float the shaped body in water. The above-mentioned water purification device, characterized in that: (1) A joint portion is provided only at the center, a nonwoven fabric fiber layer and a foam layer extend radially from the center joint portion, and the respective densities of the nonwoven fabric fiber layer and the foam layer are from the central joint portion to the peripheral portion. (2) a radially three-dimensionally shaped body comprising fine foam particles, which become finer to coarser and are supported on the nonwoven fibers of the nonwoven fiber layer and / or are contained in the foam layer; A water purifying device comprising: a connecting means attached to the radial three-dimensional molded body and attachable to a support disposed at the bottom of the water, wherein the radial three-dimensional molded body is sufficient to float the molded body in water. The water purification apparatus as described above, characterized by having a proper amount of the foam layer and the minute foam particles.

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