JPWO2014207841A1 - Water purification device - Google Patents

Abstract

This water purification apparatus includes a porous tubular body 10 that is submerged in the water 1b except for the upper end portion 11 in a vertical orientation, and a living organism (for example, a swordfish shell) 20 that has a filtering ability and is accommodated in the porous tubular body 10. And a connecting member 30 for connecting a large number of the porous cylindrical bodies 10 side by side, and a large number of the connected porous cylindrical bodies 10 are moored in a certain water area 1. The connecting member 30 includes an upper connecting member 31 that connects the porous tubular body 10 at a boundary portion 15 between the upper end portion 11 protruding from the water surface and the intermediate portion 14 that is submerged in the water 1b, and a porous tubular body that is formed in the water 1b. 10 and a lower connecting member 32 that connects the two.

Description

  The present invention relates to a water purification apparatus used in semi-enclosed water areas such as dam lakes and reservoirs, closed water areas, and the like. Specifically, the present invention relates to a water purification device that purifies water quality using a living organism having a filtering ability.

  Water quality in semi-enclosed water areas and closed water areas such as dam lakes and reservoirs is deteriorated by inflow of domestic wastewater and poor water circulation. Specifically, such water areas are eutrophied by nitrogen, phosphorus, nutrient salts, etc. contained in domestic wastewater. In eutrophied waters, a large amount of phytoplankton and other water pollutants such as sea cucumbers proliferate, and the dead bodies sink to the bottom of the water, deteriorating water quality. When the water quality deteriorates, bad odors are exerted over a wide range, for example, bad odor is generated not only in the water area but also in the downstream area and the water supply.

  As a measure for purifying the water quality, there is a method of collecting and removing the blue-green algae with a blue-water sampling vessel. However, it is not efficient to collect and remove blue sea urchins in the sea bream collection ship. There is also a method of purifying water quality by spraying chemicals. However, chemical spraying can cause other environmental problems. There is also a method of purifying water quality by circulating water using a pump. However, in order to use the pump, not only a large driving source is required, but also water circulates so that the sludge settled on the bottom of the water rises and causes new water pollution.

  For this reason, various apparatuses and methods have been proposed that do not require labor, cause new environmental problems, and can purify the water without using energy such as a drive source. For example, the floating body described in Patent Document 1 is suspended from an annular body having a central opening, a buoyancy body surrounding the outer periphery of the annular body, and a central opening of the annular body in order to give buoyancy to the annular body. A cage-shaped mesh material and a number of swordfish shells housed inside the cage-shaped mesh material are provided. And a coupling tool is provided in the outer periphery of a buoyancy body, and a floating body unit is assembled by connecting several floating bodies with a coupling tool.

  A floating body floats on the surface of the water, so that the scallops housed in the cage mesh material are bred near the surface of the water. Sea mussels are raised by eating phytoplankton while taking oxygen. Moreover, since rainbow trout has a filter food property, it removes phytoplankton, such as a giant sea lion.

  However, since the floating body floats on the water surface, it floats in a semi-enclosed water area where water flow is generated by power generation intake like a dam lake. Therefore, this floating body not only moves in a state where water pollutants are not sufficiently removed, but also cannot be purified efficiently by moving to a water area free of water pollutants. In addition, since this floating body is connected with the adjacent saddle-shaped mesh materials separated, the water pollutants in the inlet move between the saddle-shaped mesh materials and diffuse outside the inlet. May end up.

Japanese Unexamined Patent Publication No. 2008-263787

  Therefore, the present invention can be used not only in closed water areas where there is no flow, but also in semi-closed water areas where there is flow, and water quality deteriorated by not diffusing water pollutants from certain water areas. It is an object to provide a water purification device that can purify water.

  The water purification apparatus according to the present invention includes a perforated tubular body that is submerged in water in a vertical orientation except for its upper end, a living organism having a filtering ability housed in the perforated tubular body, and a large number of them in the horizontal direction. A connecting member for connecting the porous cylindrical bodies thus formed, and the plurality of connected porous cylindrical bodies are moored in a fixed water area.

  Here, as an aspect of the water purification apparatus according to the present invention, a configuration in which the porous cylindrical body is a resin net-like body can be employed.

  Moreover, as another aspect of the water purification apparatus according to the present invention, the porous cylindrical body may be configured to be made of a hard resin.

  As another aspect of the water purification apparatus according to the present invention, the porous cylindrical body includes a large-diameter porous cylindrical body and one or a plurality of small-diameter porous cylindrical bodies, and the small-diameter porous cylindrical body. A configuration in which the body is inserted into a large-diameter porous cylindrical body can be employed.

  Moreover, as another aspect of the water purification apparatus according to the present invention, a configuration in which the organism having the filtering ability is a filter-feeding shellfish can be employed.

  Moreover, as another aspect of the water purification apparatus according to the present invention, the connecting member is an upper connecting member that connects the porous cylindrical body at a boundary portion between an upper end portion protruding from the water surface and an intermediate portion submerged in water. A configuration can be employed.

  In this case, the upper connecting member may be a float that floats on the water surface.

  In this case, the connecting member may include a lower connecting member that connects the porous cylindrical bodies in water.

  Further, as another aspect of the water purification apparatus according to the present invention, the connecting member may employ a configuration in which the porous cylindrical body is connected linearly.

  Further, as another aspect of the water purification apparatus according to the present invention, a configuration in which a connecting tool for connecting and extending a plurality of connecting members is provided in the connecting member can be adopted.

  Moreover, as another aspect of the water purification apparatus according to the present invention, it is possible to employ a configuration further including a mooring member that spans the porous tubular body or the connecting member and a shore anchor.

  According to the present invention, it can be used not only in a closed water area without a flow but also in a semi-closed water area with a flow, and the water quality deteriorated by not diffusing water pollutants from a certain water area. It is possible to provide a water purification device that can purify water.

FIG. 1 is a schematic perspective view showing an embodiment of a water purification device according to the present invention. FIG. 2 is a cross-sectional side view showing an embodiment of the water purification apparatus according to the present invention. FIG. 3 is a schematic perspective view showing a main part of another embodiment of the water purification apparatus according to the present invention.

  An embodiment of the water purification apparatus according to the present invention will be described with reference to FIGS. 1 and 2.

  This water purification apparatus includes a porous cylindrical body 10 that is submerged in the vertical orientation except for the upper end portion 11, a living organism 20 that has a filtering ability and is accommodated in the porous cylindrical body 10, and a horizontal direction. A connecting member 30 for connecting a large number of porous cylindrical bodies 10 arranged in a row and a mooring member 40 for mooring the connected porous cylindrical bodies 10 in a certain water area 1 are provided.

  The porous cylindrical body 10 is made of polyethylene or other soft resin, and has a cylindrical main body portion 12 and a closing portion 13 that closes the bottom portion of the main body portion 12, and both are formed in a net shape. The main body portion 12 and the closing portion 13 may be integrally formed. The shape of the mesh is not limited to squares, rectangles, rhombuses, turtle shells, or the like. However, the size of the mesh is, of course, smaller than the organism 20 having the filtering ability, and the organism 20 having the filtration ability housed in the porous cylindrical body 10 is prevented from coming out of the porous cylindrical body 10. ing.

  In addition, the porous cylindrical body 10 may be made of a hard resin such as vinyl chloride and having increased rigidity. Since the porous cylindrical body 10 made of hard resin is difficult to bend, even if a repeated load is applied due to a change in water flow, it does not fatigue and break. The porous cylindrical body 10 made of hard resin has a number of holes smaller than the organism 20 having a filtering ability so that water can enter the porous cylindrical body 10.

  In any case, the living organism 20 having a filtering ability is accommodated in the porous cylindrical body 10 from the closed portion 13 to the vicinity of the upper end portion 11. As the organism 20 having the filtering ability, a filter-feeding shellfish such as a swordfish shell (hereinafter referred to as “swordfish”) is adopted. The white mussel 20 has a characteristic of sucking phytoplankton such as a giant sea urchin together with water, filtering it, and discharging water.

  In addition, the length of the porous cylindrical body 10 which accommodates the scallop shell 20 is about 4 m, for example. This is because the swordfish 20 is unlikely to live in deep water 1b having a depth of 4 m or more.

  And the connection member 30 which connects many porous cylindrical bodies 10 shall be the thing which combined the upper connection member 31 and the lower connection member 32. FIG. The upper connecting member 31 is in a state in which a large number of porous cylindrical bodies 10 are arranged at a boundary portion 15 between the upper end portion 11 where the porous cylindrical body 10 protrudes from the water surface 1a and the intermediate portion 14 submerged in the water 1b. Link.

  The upper connecting member 31 is formed as a bar having rigidity with a material having a specific gravity smaller than that of water which acts as a float floating on the water surface 1a. The upper connecting member 31 connects a large number of porous cylindrical bodies 10 as a set of two such that a large number of the porous cylindrical bodies 10 are sandwiched from both sides of one surface and the other surface.

  Each end portion of each upper connecting member 31 is provided with a connecting tool 33 for connecting and extending a plurality of upper connecting members 31. Although not shown in the drawing, a number of longitudinal arc-shaped grooves into which the outer surface of the porous cylindrical body 10 is fitted may be continuously formed on the surface where the upper connecting member 31 is in contact with the porous cylindrical body 10.

  And the lower connection member 32 is connected so that the lower end part 16 of the porous cylindrical body 10 arranged in multiple numbers may maintain the state aligned in the water 1b. As the lower connecting member 32, a wire, a band, or the like is adopted, but it is preferable that the lower connecting member 32 has rigidity to maintain a state in which a large number of the porous cylindrical bodies 10 are arranged in a straight line. Further, the lower connecting member 32 connects a large number of the porous cylindrical bodies 10 together in a diving operation.

  The mooring member 40 is bridged between each upper end portion 11 of the outermost porous cylindrical body 10 and a shore anchor (not shown), and a large number of the porous cylindrical bodies 10 are moored in a certain water area 1. To do. That is, one end portion 41 of the anchoring member 40 is fixed to the upper end portion 11 of the outermost porous tubular body 10, and the other end portion 42 of the anchoring member 40 is locked to the shore anchor. Although not shown, the mooring member 40 may be fixed to the upper connecting member 31. And as long as the mooring member 40 has the intensity | strength which is not cut | disconnected, it does not limit a material and does not specify a form like a rope or a chain.

  Here, the assembly method of the water purification apparatus comprised as mentioned above is demonstrated. For example, if phytoplankton and other water pollutants such as blue sea urchin (hereinafter referred to as “blue sea urchin”) 2 are proliferating in the inlet, etc., the water purification apparatus is installed so that the blue sea 2 is trapped in the inlet and not diffused. Moored.

  The water purification device is loaded in a state where the porous cylindrical body 10 and the connecting member 30 are disassembled. The scallop 20 is placed in the porous cylindrical body 10 before being loaded or on the ship. As shown in FIG. 2, the porous cylindrical body 10 containing the swordfish shell 20 is submerged in the water 1b except for the upper end portion 11 in a vertical posture. And the porous cylindrical body 10 which accommodated the swordfish shell 20 is put in order so that it may adjoin in a horizontal direction.

  A predetermined number of the porous cylindrical bodies 10 are connected by the upper connecting member 31 and the lower connecting member 32. Since the upper connecting member 31 acts as a float and floats on the water surface 1 a, the upper end portion 11 of the porous tubular body 10 above the upper connecting member 31 even when the scallop 20 is housed in the porous tubular body 10. Protrudes from the water surface 1a. Further, since the swordfish 20 is housed in each porous cylindrical body 10, the center of gravity is in the water 1b, but it is not sunk by the upper connecting member 31 acting as a float. And the lower connection member 32 connects the lower end part 16 of the porous cylindrical body 10 arranged in the predetermined number by the underwater 1b.

  The intermediate part 14 and the lower end part 16 of the multiple porous cylindrical bodies 10 connected in this way are not irregular, and are partitioned like a flat curtain wall from the upper connecting member 31 in the vertical direction. And hung. Note that the vertical posture includes not only a strict vertical posture but also a tilted posture due to a water flow or the like.

  And since there is a limit in the length of the upper connecting member 31 and the lower connecting member 32, a large number of the porous cylindrical bodies 10 connected by this limit length are used as one unit. Therefore, the porous cylindrical body 10 can be connected, for example, by 100 m or more by connecting the units one after another. A plurality of units can be added by connecting the connecting members 33 of the adjacent upper coupling members 31.

  And the one end part 41 of the anchoring member 40 is fixed to the outermost porous cylindrical body 10, and the other end part 42 of the anchoring member 40 is locked to the anchor at the shore. In this way, the water purification device is moored in a certain water area 1.

  The upper ends 11 of the multiple porous cylindrical bodies 10 provided in the water purification device protrude from the water surface 1a without any gap, and the intermediate portion 14 and the lower end 16 are submerged in the water 1b without any gap. Therefore, this water purification device creates a closed area where the watermelon 2 is confined in the inlet and not diffused.

  Accordingly, as shown in FIG. 2, the sea bream 2 is confined in a closed region between the multiple porous cylindrical bodies 10 and the shore. The sea cucumber climbs over the upper end portion 11 of the porous cylindrical body 10 protruding from the water surface and does not flow out of the closed water area. In other words, the upper end portions 11 of the large number of porous cylindrical bodies 10 function as a dike that does not allow the watermelon 2 in the inlet to flow out from the water surface 1a side.

  However, the sea bream 2 enters the intermediate portion 14 of the porous cylindrical body 10. This sea urchin 2 is in contact with a swordfish shell 20 in the porous cylindrical body 10. The swordfish 20 sucks the blue sea bream 2 together with water, filters it, and spits out the water because of its filterability. Therefore, the filtered water flows out of the bay partitioned by the porous cylindrical body 10, and the filtered water is returned to the bay. In this way, due to the filter eating habit of the scallop shell 20, water purification can be achieved with a low environmental load, and the transparency of water can be increased.

  The excrement of the swordfish 20 falls from the closed portion 13 of the porous tubular body 10 to the bottom of the water and does not remain in the porous tubular body 10. Accordingly, the porous cylindrical body 10 is maintained in a state free from water pollution by the excrement of the swordfish shell 20. Therefore, the swordfish 20 grown in the porous cylindrical body 10 is also provided for food.

  The swordfish 20 is taken out by pulling up the porous cylindrical body 10. That is, the porous cylindrical body 10 adjacent to the porous cylindrical body 10 to be pulled up remains connected to the connecting member 30, and the intermediate porous cylindrical body 10 sandwiched between the porous cylindrical bodies 10 on both sides thereof is removed. By pulling up, the grown scallop 20 is taken out. And the porous cylindrical body 10 which accommodated the new scallop shell 20 is submerged in the water 1b. Thereby, the metabolism of the swordfish shell 20 can be promoted. The dead swordfish 20 is discarded.

  Alternatively, as shown in FIG. 3, the porous cylindrical body 10 includes a large-diameter porous cylindrical body (hereinafter, mainly referred to as “large-diameter cylindrical body”) 10a and a plurality of small-diameter porous cylindrical bodies (hereinafter referred to as “large-diameter cylindrical bodies”). , Mainly referred to as “small-diameter cylindrical body”) 10b. Although not illustrated, the small-diameter cylindrical body 10b may include only one of a size that is slightly smaller than the large-diameter cylindrical body 10.

  In any case, the small diameter cylindrical body 10b is inserted into the large diameter cylindrical body 10a. And the swordfish shell 20 is accommodated in the small diameter cylindrical body 10b. Although not shown in FIG. 3, the boundary portion between the upper end portion and the intermediate portion of the large-diameter cylindrical body 10 a is connected by the upper connecting member 31, and the lower end portion of the large-diameter cylindrical body 10 a is the lower connecting member 32. Connected by

  And this small diameter cylindrical body 10b can be easily inserted / removed from the large diameter cylindrical body 10a. Therefore, this water purification device can easily replace the scallop 20. In this case, the material may be appropriately changed, for example, by combining the large-diameter cylindrical body 10a with a hard resin and the small-diameter cylindrical body 10b with a soft resin.

  As described above, the water purification device according to the present embodiment has a porous tubular body 10 that is submerged in the water 1b except for the upper end portion in a vertical orientation, and a biological organism that has a filtration capacity stored in the porous tubular body 10. 20 and a connecting member 30 that connects a large number of porous cylindrical bodies 10 arranged in the horizontal direction, and the connected multiple porous cylindrical bodies 10 are moored in a fixed water area.

  Therefore, this water purification apparatus accommodates the organism 20 having filtration ability even if the water quality of the water area 1 such as a closed water area or a semi-closed water area deteriorates due to phytoplankton or other water pollutants such as the blue sea urchin 2. Water quality can be purified by mooring the porous cylindrical body 10 in a state of being submerged in the water 1b. A large number of the porous cylindrical bodies 10 are arranged in a vertical posture without gaps and are connected to the connecting member 30. Accordingly, a large number of the perforated cylindrical bodies 10 are arranged so that water pollutants such as phytoplankton are confined in the inlet and not diffused. And the quality of water is purified because the living thing 20 which has a filtration capability filters water quality pollutants, such as a phytoplankton.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the said porous cylindrical body 10 is a resin net-like body. As a result, water pollutants such as phytoplankton can easily enter the porous cylindrical body 10. Therefore, the organism 20 having the filtering ability in the porous cylindrical body 10 is likely to come into contact with water pollutants that have entered the porous cylindrical body 10. Thereby, this water purification apparatus can purify | clean a water quality efficiently.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the said porous cylindrical body 10 is good also as a product made from hard resin. Thereby, the porous cylindrical body 10 becomes difficult to bend and does not fatigue and break even when a repeated load is applied due to a change in the water flow.

  Moreover, according to the water purification apparatus according to the present embodiment, the porous tubular body 10 includes the large-diameter porous tubular body 10a and one or a plurality of small-diameter porous tubular bodies 10b, and the small-diameter porous tubular body 10b. The porous cylindrical body 10b is inserted into the large-diameter porous cylindrical body 10a. As a result, the organism 20 having the filtering ability can be accommodated in the small-diameter porous cylindrical body 10b, and the small-diameter porous cylindrical body 10b can be easily inserted and removed from the large-diameter porous cylindrical body 10a. Therefore, the organism 20 having the filtration ability grown in the small-diameter porous cylindrical body 10b is easily taken out from the large-diameter porous cylinder 10a submerged in the water 1b, and the organism 20 having a new filtration ability is stored. The small-diameter porous cylindrical body 10b can be easily inserted into the large-diameter porous cylindrical body 10a.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the organism 20 which has the said filtration capability is a filtration food shellfish. Filter-feeding shellfish have the characteristic of sucking a suspension such as phytoplankton together with water, filtering it, and discharging the water. The grown shellfish can be used for food.

  Moreover, according to the water purification apparatus according to the present embodiment, the connecting member 30 has the porous cylindrical body 10 at the boundary portion 15 between the upper end portion 11 protruding from the water surface 1a and the intermediate portion 14 submerged in the water 1b. It is the upper connection member 31 which connects. Since the center of gravity of the porous cylindrical body 10 is in the water 1b by accommodating the organism 20 having a filtration capacity, the upper connecting member 31 is a boundary 15 between the upper end portion 11 and the intermediate portion 14 of the porous cylindrical body 10. As a result, the intermediate portion 14 and the lower end portion 16 of the porous tubular body 10 are submerged in the water 1b while being suspended from the upper connecting member 31.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the said upper connection member 31 is a float which floats on the water surface 1a. Thereby, since the upper connecting member 31 floats on the water surface 1a by the float, the porous tubular body 10 containing the organism 20 having the filtering ability is given buoyancy and can be prevented from sinking into the water 1b.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the said connection member 30 is equipped with the lower connection member 32 which connects the porous cylindrical body 10 with the underwater 1b. As a result, the intermediate portion 14 and the lower end portion 16 of the porous cylindrical body 10 are aligned in a straight line by the lower connecting member 32, thereby forming a partition like a flat curtain wall.

  Moreover, according to the water purification apparatus which concerns on this embodiment, the said connection member 30 connects the said porous cylindrical body 10 linearly. Thereby, the water purification apparatus can make the state in which the water pollutant was confined in the inlet.

  Further, according to the water purification apparatus according to the present embodiment, the connecting member 30 is provided with the connecting member 33 for connecting and extending a plurality of connecting members 30. By providing the connection tool 33, it becomes possible to add a unit in which a large number of porous cylindrical bodies 10 are connected, and the length of arranging the porous cylindrical bodies 10 is increased regardless of the length of the connecting member 30. In addition, the porous cylindrical body 10 and the connecting member 30 can be easily transported to the predetermined water area 1 and can be easily assembled.

  Moreover, according to the water purification apparatus which concerns on this embodiment, it is further provided with the mooring member which spans the said porous cylindrical body or a connection member, and the anchor of a bank. The tethered member can tether many connected porous cylindrical bodies in a certain water area.

  In addition, the water purification apparatus which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, the main body portion 12 of the porous tubular body 10 is not limited to a cylindrical shape, and may be a square tubular shape.

  Moreover, when the porous cylindrical body 10 has sufficient buoyancy, the upper connecting member 31 may be a belt or a wire instead of a float. Moreover, you may comprise the lower connection member 32 with the clip etc. which each connect the closed part 13 and the lower end part 16 of the adjacent porous cylindrical body 10 instead of a belt and a wire.

  Further, the connecting member 30 is not limited to the upper and lower combinations of the upper connecting member 31 and the lower connecting member 32, and may be connected to the intermediate portion 14 of the porous cylindrical body 10, or conversely, the lower connecting member 32. May be omitted and only the upper connecting member 31 may be used.

  Further, a large number of the porous cylindrical bodies 10 may not be arranged like a flat curtain wall, but may be arranged like an arch shape or an annular curtain wall in accordance with the state of occurrence of the water-bloom 2. In this case, the connecting member 30 is flexible.

  Further, the porous cylindrical body 10 may close the intermediate portion 14 of the main body portion 12 with the closing portion 13 instead of closing the bottom portion of the main body portion 12 with the closing portion 13. The closing portion 13 may be constituted by a plurality of shafts that pierce the intermediate portion 14 of the main body portion 12.

  In this case, the porous cylindrical body 10 may have a length of 4 m or longer, and the lower end portion 16 may be pierced into the water bottom. The porous cylindrical body 10 does not float in the water 1b. Therefore, the upper connecting member 31 in this water purification device does not have to act as a float. Further, when the porous cylindrical body 10 is stuck into the water bottom in a stable state, the mooring member 40 is not necessary.

  In addition to the swordfish shell 20, various aquatic organisms can be employed as the filter edible organism 20. For example, as aquatic plants, water hyacinth, reed, sugi namo, tanukimo, baikamo, matsumo and the like may be employed. Aquatic animals include walnut shellfish, walnut shellfish, funnel shellfish, shellfish, warbler shellfish, marsdale shellfish, giant oyster shellfish, sea bream shellfish, horned shellfish, squid shellfish, kawachina, oyster shellfish, dove shellfish, crow shellfish, snail Molluscs such as shellfish such as worms, earthworms, gokai and leeches can be employed. These aquatic plants and aquatic animals may be mixed in the porous cylindrical body 10.

1 ………… Water 1a ……… Water 1b ……… Underwater 2 ………… Water pollutant (Aoko)
DESCRIPTION OF SYMBOLS 10 ......... Porous cylindrical body 11 ......... Upper end part 13 ......... Closed part 14 ...... Intermediate part 15 ......... Boundary part 20 ......... A living thing (filtered mussel) having filtration ability
30 ......... Connecting member 31 ......... Upper connecting member 32 ......... Lower connecting member 33 ......... Connector 40 ......... Mooring member

The water purification apparatus according to the present invention includes a porous cylindrical body that is submerged in water in a vertical posture except for an upper end portion, an aquatic organism having a filtering ability stored in the porous cylindrical body, and a horizontal gap. A plurality of connected porous cylindrical bodies, and the connected multiple porous cylindrical bodies include a large-diameter porous cylindrical body and one or a plurality of small-diameter porous cylindrical bodies. A small-diameter porous cylindrical body is inserted into the large-diameter porous cylindrical body and moored in a certain water area.

Further, as another aspect of the water purification apparatus according to the present invention, the aquatic organism having the filtering ability may employ a configuration that is a filter edible shellfish.

Claims (11)

  A porous cylindrical body that is submerged in water except for the upper end portion in a vertical orientation, a living organism having filtration ability stored in the porous cylindrical body, and a plurality of porous cylindrical bodies arranged in a horizontal direction are connected. A water purification apparatus comprising a connecting member, wherein the connected porous cylindrical bodies are moored in a fixed water area.   The water purification apparatus according to claim 1, wherein the porous cylindrical body is a resin net-like body.   The water purification apparatus according to claim 1 or 2, wherein the porous cylindrical body is made of a hard resin.   The porous cylinder includes a large-diameter porous cylinder and one or a plurality of small-diameter porous cylinders, and the small-diameter porous cylinder is inserted into the large-diameter porous cylinder. The water quality purification apparatus according to any one of claims 1 to 3.   The water purification apparatus according to any one of claims 1 to 4, wherein the organism having the filtering ability is a filter-feeding shellfish.   The said connection member is an upper connection member which connects a porous cylindrical body in the boundary part of the upper end part which protrudes from the water surface, and the intermediate part which is sinking in water. Water purification device.   The water purification apparatus according to claim 6, wherein the upper connecting member is a float that floats on a water surface.   The water purification device according to claim 6 or 7, wherein the connecting member includes a lower connecting member that connects the porous cylindrical bodies in water.   The water purification apparatus according to any one of claims 1 to 8, wherein the connecting member connects the porous cylindrical bodies linearly.   The water purification apparatus according to any one of claims 1 to 9, wherein the connection member is provided with a connection tool for connecting and extending a plurality of connection members. The water purification apparatus according to any one of claims 1 to 10, further comprising a mooring member that spans the porous tubular body or the connecting member and a shore anchor.

Images