JP4777200B2 - Suspended material collection method and apparatus - Google Patents

Description

  The present invention relates to a closed water area or a microfluidic water area in which a suspended substance containing phytoplankton or the like stays in a dam lake, pond, lake, reservoir, dam cove, moat, sea area, etc. The present invention relates to a method and an apparatus for collecting and removing the suspended solids from water and purifying these water areas.

  Conventionally, as a method for collecting suspended substances floating in the water area, a suspended substance suction inlet connected to a suction pump via a suction hose is disposed below the surface of the water area, and the suspended substance is collected by the suction pump. A method of sucking a suspended substance together with water from an intake water intake is generally used (see Patent Document 1).

  Further, in the above method, in order to increase the collection efficiency of the suspended solids, a water flow is generated toward the arrangement position of the suspended solid intake port, and the suspended solids floating in the water area are A method has been proposed in which the suspension material is guided to the vicinity of the suspended substance suction inlet (see Patent Document 2 and Patent Document 3).

  Patent Document 2 shows a sampling method in the case where the suspended substance is a blue-floor. This sampling method generates a micro-bubble near the bottom of the distribution range of the blue-floor under the surface of the water. It is said that the water bubbles are caused to move toward the surface of the suspended matter inhalation intake port by raising the watermelon to the water surface by the microbubbles that are attached and rising, and further moving the watermelon attached to the water surface and the watermelon floating near the water surface. Is.

  Patent Document 3 also shows a sampling method in the case where the suspended substance is a giant octopus, and this sampling method is performed around the suspended substance suction inlet with a rotary blade provided around the suspended substance suction inlet. An annular flow is generated, and the sea cucumber is guided to the suspended substance suction intake port by being placed on the annular flow.

JP 2002-1371 A JP 2004-8948 A JP 2000-303438 A

  In both of the conventional methods described in Patent Documents 2 and 3, the water flow is performed so that the suspended substance concentrates at a level equal to or higher than the water depth level of the suspended substance suction inlet disposed below the water surface. However, this water flow serves to concentrate the suspended substance exclusively in the vicinity and upper area of the suspended substance suction inlet, and the suspended substance sucked water intake of the concentrated suspended substance. The suction from the mouth depends exclusively on the suction force by the suction pump.

  Even when a concentrated suspended substance is sucked in this way, a suction pump having a strong suction force is necessary to perform sufficient suction collection. Even if it is used, the suspended matter floating on the water surface may not be completely aspirated and collected. For example, in the case of blue sea cucumbers, in our experiments, low water sea cucumber with a water removal rate of 80% or more in the water area. In spite of the concentration, it was observed that the water surface was stained green.

  Accordingly, an object of the present invention is to sufficiently suck and collect suspended substances including suspended substances floating on the water surface even with a suction pump having a relatively small suction force.

  The inventors have solved the problem described above by generating a horizontal water flow substantially parallel to the water surface approaching the suspended matter floating on the water surface and a downward water flow toward the suspended material suction intake. I found it to be solved.

  And it discovered that the said downward direction water flow was brought about by making the said horizontal direction water flow collide in the upper range of the said suspension-substance suction inlet.

  These findings were confirmed by simulation experiments of three-dimensional river flow. 5 to 10 show three calculations performed by modifying the boundary conditions as shown in each figure in the simulation method based on the MAC method starting on page 83 of the “Introduction to Excel River Numerical Analysis” published on November 15, 2004 by Index Publication. A condition experiment case is shown. In the vicinity of the water surface, it can be confirmed that the downward water flow is generated by colliding the horizontal water flow from the four sides with each other at the center. As in the case of Experiments 2 and 3, it is recognized that if the opposing horizontal water flows are in a state of crossing each other in the lateral direction, a vortex flow is generated along with the downward water flow.

Based on the above knowledge and calculation experiments, the present invention provides:
Suspended substance suction intake formed as a circular opening is disposed below the water surface in the direction of the water surface, and the suspended substance floating in the water area is guided toward the suspension substance suction intake, In the suspended matter collection method of sucking together with water by a suction pump from the suspended matter intake water intake and feeding it to the suspended matter recovery processing device via the suction hose,
In the surface layer range where the suspended suspended matter floats in the water area and at a shallow water depth position where the suspended matter suction intake port is disposed, the suspension material suction intake port is centered around the suspension material in the circumferential direction. Generating a horizontal water flow substantially parallel to the water surface uniformly directed in a substantially tangential direction of the circular suspended substance inhalation intake port by ejection from nozzle members installed at a plurality of locations that are substantially evenly distributed;
Generating a downward water flow by colliding each horizontal water flow in the upper area of the suspension material intake intake;
The suspended suspended matter floating in the surface layer range is guided to the suspended matter intake water intake by being placed on the horizontal water flow and the downward water flow.

  In the present invention, the surface layer range in which floating suspended matter floats in the water area means a range from the water surface to about 50 cm below the water surface. The intake water intake is preferably arranged in a relatively shallow range of about 10 cm below the water surface from the water surface, and particularly preferably in a water depth range of about 7 cm below the water surface.

According to the first aspect of the present invention, the suspended suspension around the suspension substance suction inlet is suspended by the horizontal water flow emitted from the plurality of directions around the suspension substance suction inlet. Suspended material inhaled by being drawn down toward the intake intake, and downflowed toward the suspended matter intake intake by the downward flow caused by the collision of the horizontal water flow above the suspended matter intake intake. Suction from the water intake. In particular, since the suspension material suction intake port that is opened in a circle is directed in the water surface direction, and the horizontal water flow is uniformly directed in a direction substantially tangential to the opening by the ejection from the nozzle member , the vortex flow is generated by the horizontal water flow. This vortex has the effect of enhancing the downward flow, and suspended suspended matter around the suspended material intake is also suspended in the vortex and not suspended by the horizontal flow. Efficiently gathers up to the upper area of the turbid substance intake. In addition, the above-mentioned uniform means that when the opening is viewed from above, the entire horizontal water flow is directed substantially tangentially on the same side of either the left side or the right side of the opening. I mean.

  The above downward flow toward the suspended material intake intake facilitates the intake of suspended material at the suspended material intake intake, and is therefore efficient even when using a suction pump that does not have much suction. Suction is achieved. Suspended substances floating on the surface of water are more likely to be sucked in as the above-mentioned suspended substance intake intake is closer to the water surface, and the remaining of suspended substances on the water surface is greatly reduced, resulting in a clear water surface. Can do.

According to claim 2 , when the horizontal water flow is generated by a jet flowing out from a slit jet port extending in a horizontal direction and a direction perpendicular to the horizontal water flow, a horizontal band-like direction is obtained. A water stream is provided, and the action of this strip-like horizontal water stream transports the suspended material over a wide range towards the upper area of the suspended material intake.

Invention of Claim 3 is related with the apparatus for implementing the said method effectively, Comprising:
A water-absorbing member having a suspension substance suction intake port that is circularly open toward the water surface , and the suspension material suction intake port communicates with a suction hose connected to a suction pump;
It has a substantially polygonal frame in plan view with floating bodies attached to the lower part of each corner, and the frame holds the suspension material intake water intake port so that it is located below the water surface at the center of the frame. A saddle member,
Attached to each side of the frame so as to be distributed substantially uniformly in the circumferential direction around the suspension substance suction intake, and toward the substantially tangential direction of the circular suspension substance suction intake A nozzle member having a water outlet for uniformly directing a horizontal water flow substantially parallel to the water surface;
In order to cause the horizontal water flow generated from the nozzle member to collide above the suspended substance suction inlet, the suspended substance suction inlet is positioned deeper than the depth position of the nozzle member. An adjustment member for adjusting the position of the suspended material intake and / or the nozzle member;
Water supply pipe means for supplying water to each nozzle member;
It is characterized by having.

According to the third aspect of the present invention, the nozzle member is attached to the center of each side of the frame of the eaves member, so that the suspension material suction water intake is distributed substantially evenly in the circumferential direction around the suspension water intake intake port. It is possible to easily bring about a configuration for uniformly directing a horizontal water flow substantially parallel to the water surface toward the substantially tangential direction of the suspended matter intake port that is circularly opened from a plurality of places, and By providing an adjusting member for adjusting the position of the suspended substance suction device to a position deeper than the depth position of the nozzle member, the horizontal water flow generated from the nozzle member is used to draw the suspended substance suction inlet. Therefore, a horizontal water flow is formed from the periphery of the suspended matter suction inlet to the suspended matter suction intake, and the horizontal flow is impeded. This makes it possible to generate a downward water flow in the upper area of the suspended matter intake intake, and to guide the suspended matter floating on the surface of the water area by this downward flow and to guide it to the suspended material intake intake. Can be produced. Further, according to the apparatus of the present invention, the suction and collection of the suspended matter from the suspended matter suction inlet is efficiently performed at a high yield by the suction pump having a small suction force. While performing, it is possible to move the inside of the water area without wrinkling by pulling the dredging member with a rope or the like. In addition, it is preferable that the frame has a substantially rectangular shape in a plan view in that the heel member stably floats on the water surface, and it is more preferable because the frame can be formed more inexpensively and easily.

According to a fourth aspect of the present invention, each of the nozzle members is formed as a cylindrical body, and the water jet port extends in a horizontal direction and in a direction perpendicular to the horizontal water flow to generate a wide horizontal water flow. If the cylindrical body is formed as a slit outlet to be generated, a strip-shaped horizontal water flow that can draw a wide range of suspended matter up to the upper range of the suspended matter intake water inlet can be easily obtained. Brought about.

According to a fifth aspect of the present invention, if each of the cylinders is adjustable in the direction of water flow from the water outlet with respect to the suspended substance suction intake, the horizontal direction from the slit outlet can be adjusted. Part of the water flow collides with each other, thereby causing a downward water flow, and the other part of the horizontal water flow from the slit outlet is moved above the suspension material suction water intake by the suspension material suction water intake. It is easy to achieve a central vortex flow, which induces suspended material from a relatively wide area centered on the suspended material intake intake and A stream of water is provided and more efficient suspension material aspiration from the suspension material intake can be achieved.

According to a sixth aspect of the present invention, if each nozzle member is provided with a sub-nozzle member having a water jet port that generates an annular horizontal water flow outside the floating body, the outside of the floating body is provided. Suspended matter drifting in this direction is put on the annular horizontal water flow and merged with the horizontal water flow generated by the main nozzle cylinder, and the suspension is put on the horizontal water flow by the main nozzle cylinder Since the substance can be directed in the direction of intake of the substance, the efficiency of collecting the suspended substance can be further increased.

  The sub nozzle members are also formed as cylinders, and the water jets provided in these cylinders extend in the horizontal direction and in the direction perpendicular to the horizontal water flow from the sub nozzle members, and are wide horizontal. If it is formed as a slit jet outlet that generates a directional water flow, the annular horizontal water flow generated on the outer side of the floating body becomes wider, and the suspended solids can be dispersed from a wider range. It can be gathered on a directional water stream.

  According to the present invention, the suspended matter from the water area can be collected effectively using the suction pump having a relatively small suction force, including the suspended matter floating on the water surface. It is possible to bring a clear water surface to the water area after performing the sampling operation.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a suspended matter collecting apparatus according to an embodiment of the present invention, FIG. 2 is a schematic plan view of the suspended matter collecting apparatus, and FIG. 3 is a schematic sectional view taken along line III-III in FIG. is there.

  As shown in the figure, the suspended solid collection device 1 according to the embodiment of the present invention includes a gutter member 10, a water absorbing member 20, nozzle members 30A to 30D, and water supply pipe means 40A to 40D.

  The eaves member 10 has a square frame 11 in plan view. Floating bodies 12 are respectively attached to the lower portions of the four corners of the frame 11, and these floating bodies 12 are placed horizontally at a certain height on the water surface. keeping.

  The water absorbing member 20 is held in a state of being suspended by the suspension members 14 </ b> A and 14 </ b> B on the support base 13 attached to the central portion of the flange member 10. The suspension members 14A and 14B are configured such that the length can be adjusted. Therefore, the distance from the support base 13, that is, the depth position from the water surface, of the water absorbing member 20 can be adjusted.

  As shown in FIG. 3, the water absorbing member 20 is formed in a funnel shape, and the large-diameter side mouth portion of the funnel-shaped water absorbing member 20 is a suspension material intake water intake 21, and this suspended material intake The water intake 21 is directed in the direction of the water surface S. The tubular foot portion 22 on the small diameter side of the funnel-shaped water-absorbing member 20 is connected to a suction hose 50, and this suction hose 50 floats via the suction pump 60 on the ground around the area where the suspended solids are to be removed or above the water area. It is connected to the suspended matter recovery processing device 70 installed in the processing vessel.

  The nozzle members 30 </ b> A to 30 </ b> D are arranged on the four sides of the frame 11 and further arranged in the same manner on the outer side of the center of one side of the frame 11, and have the same shape and the same structure. Therefore, the nozzle member 30A will be described below as a representative example.

  The nozzle member 30A includes a nozzle cylinder 30A1 and an L-shaped support cylinder 30A2 coupled to the nozzle cylinder 30A1 and communicating with the nozzle cylinder 30A1 inside. The L-shaped support cylinder 30A2 includes a cylindrical horizontal part 30A21 coupled to the center of the nozzle cylinder 30A1 and horizontally supporting the nozzle cylinder 30A1, and a cylinder rising vertically from the end of the horizontal part. Shaped vertical portion 30A22.

  The cylindrical vertical portion 30A22 is rotatably fitted to the rigid vertical end pipe portion 40A1 which is the end member of the water supply pipe means 40A, so that the nozzle cylinder 30A1 is horizontal with respect to the vertical end pipe portion 40A1. The direction to the suspended substance suction inlet 21 can be adjusted by rotating.

  The nozzle cylinder 30A1 that is horizontally supported is provided with a water outlet 30A11 facing the funnel-shaped water-absorbing member 20, and this water outlet is formed as a slit outlet. The water fed to the nozzle cylinder 30A1 is ejected from the slit outlet 30A11 in parallel with the water surface S (see FIG. 3) to form a horizontal water flow. Since the nozzle cylinder 30A1 can be rotated horizontally as described above, the horizontal water flow ejected from the slit ejection port 30A11 can adjust the flow direction with respect to the suspended substance suction inlet 21. FIG. 2 shows a state in which the nozzle cylinders 30A1, 30B1, 30C1, and 30D1 are rotated and adjusted so that the horizontal water flow is uniformly directed in a substantially tangential direction with respect to the peripheral portion of the suspended matter suction inlet 21. Yes.

  The water supply pipe means 40A is provided with a rigid plastic L-shaped connecting pipe portion 40A2 fitted on the upper end of the end pipe portion 40A1, together with the end pipe portion 40A1, and a horizontal portion of the L-shaped connecting pipe portion 40A2. It has a rigid plastic transverse pipe portion 40A3 and a soft plastic water supply pipe 40A4, and the transverse pipe portion 40A3 is cantilevered at the center of each side of the frame portion 11 of the eaves member 10. It is firmly supported by a cylindrical guide arm 40A5 fixed in a formula and is connected to the water supply pipe 40A4 within the cylindrical guide arm. Since the above-described configuration of the water supply pipe means 40A is the same for the water supply pipe means 40B, 40C, and 40D, detailed description thereof will be omitted.

  The water supply pipe 40A4 is connected to a water supply source (not shown) through a water supply pump 80 together with the water supply pipes of the water supply pipe means 40B, 40C, and 40D. As this water supply source, for example, a portion where the depth of the water area where the suspended matter is to be removed is deep, or a tank in which the water filtered by the suspended matter recovery treatment device 70 is stored can be used. However, it goes without saying that the water stored in other places may be used as a water supply source.

  As for the dimensions of the suspended substance collection device 1, for example, the length of one side of the square frame 11 of the gutter member 10 is 50 cm, and the lengths of the cylindrical guide arms 40A5, 40B5, 40C5, 40D5 are 50-100 cm. However, these dimensions are exemplary and can be varied in various ways to allow efficient suspension collection.

  The suspended matter collecting apparatus 1 floats the dredging member 10 in an adjusted water area where suspended matter should be removed, connects the water supply pipes 40A4, 40B4.40C4, and 40D4 to a water source, and connects the water absorbing member 20 to the suspended matter recovery treatment apparatus. Connecting to 70 prepares for work. At that time, the suspended substance suction inlet 21 of the water absorbing member 20 is arranged at a depth of, for example, 7 cm from the water surface by adjusting the suspension members 14A and 14B, and the nozzle cylinders 30A1 and 30B1. , 30C1 and 30D1 are disposed at a shallower water depth than the suspended substance intake 21.

  After making preparations in this way, the feed water pump 80 and the suction pump 60 are actuated. By the operation of the water supply pump 80, water is ejected from the slit outlet 30A11 of the nozzle member 30A and the slit outlets of the other nozzle members 30B, 30C, and 30D, and the horizontal water flow is directed toward the suspended substance suction inlet 21. In particular, it is generated in a band shape in the tangential direction with respect to the peripheral edge portion of the suspended substance intake water intake 21. Some of these horizontal water flows collide with each other above the suspended matter suction intake 21 to generate a downward flow above the suspended matter suction intake, and another part of the horizontal flow is suspended. A vortex is generated above the turbid substance intake 21.

  The horizontal water stream causes suspended substances floating around the suspension substance suction inlet 21 to flow toward the suspension substance suction inlet 21, and the downward water stream approaches the upper area of the suspension substance suction inlet 21. The collected suspended substance is allowed to flow toward the suspended substance suction inlet 21. In addition, the vortex flow entrains the suspended material around the suspended substance suction inlet 21 into the vortex, and induces the suspended substance to be directed toward the suspended substance suction inlet 21.

  A suction force is exerted on the suspended matter suction inlet 21 by the action of the suction pump 60. Therefore, the suspended matter collected by the horizontal water flow and the vortex flow and allowed to flow down by the lower water flow is sucked by the suspended matter. It is sucked from the water intake 21 and fed to the suspended matter recovery processing device 70 via the suction hose 50.

  The dredging member 10 is pulled by a tow rope or the like and is gradually moved in the water area at the same time as the above-described suspension substance suction and sampling operation is performed, and thus the suspension material suction is not uniform over the entire water area. Collection is done.

  In the suspended substance recovery processing device 70, the suspended substance is separated from water by the polymer filter and recovered. The separated water is subjected to a treatment for increasing the amount of dissolved oxygen in the suspended matter recovery treatment device 70 and is fed to the tank or returned to the water area.

  FIG. 4 shows a modified embodiment in a schematic plan view. As shown in the figure, each nozzle cylinder 30A1, 30B1, 30C1, 30D1 is provided with a nozzle cylinder 30A11, 30B11, 30C11, 30D11, respectively. Yes. The nozzle cylinders 30A1, 30B1, 30C1, and 30D1 are referred to as main nozzle cylinders, and the nozzle cylinders 30A11, 30B11, 30C11, and 30D11 are referred to as sub-nozzle cylinders. A horizontal water flow A1 toward the side 21 is generated, and an additional horizontal direction toward the outer side of the floating body 12 (opposite side of the suspended matter intake water intake 21 as viewed from the floating body 12) from the attached sub nozzle cylinder 30A11. The directional water flow A2 is formed by water ejected from a slit ejection port (not shown) formed in the sub nozzle cylinder 30A11. Similarly, horizontal water streams B1, C1, and D1 are generated from the main nozzle cylinders 30B1, 30C1, and 30D1, respectively, and additional horizontal water streams B2, C2, and D2 are respectively generated from the sub nozzle cylinders 30B11, 30C11, and 30D11. It is generated. An annular flow is formed around the four floating bodies 12 by the additional horizontal water flows A2, B2, C2, and D2, and suspended solids drifting outward of each floating body 12 by the annular flows are the horizontal water flows A1, B1. , C1 or D1 and then can be carried on the horizontal water flow A1, B1, C1, or D1 and then flowed to the suspension material suction intake 21 at the junction with the horizontal water flow A1, B1, C1 or D1. Thereby, the collection efficiency of suspended solids is further increased.

  Is the water supply to the sub-nozzle cylinders 30A11, 30B11, 30C11, 30D11 performed by providing a branch path in the water supply pipe means 40A, 40B, 40C, 40D to the main nozzle cylinders 30A1, 30B1, 30C1, 30D1? Alternatively, the main nozzle cylinders 30A1, 30B1, 30C1, and 30D1 may be connected to the sub nozzle cylinders 30A1B, 30B1B, 30C1B, and 30D1B, respectively.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. For example, the water jets provided in the nozzle members 30A to 30D may be round holes or square holes instead of slits. The guide arm 40A5 may be made of a channel material, and this is the same for other guide arms.

1 is a perspective view of a suspended matter collection device according to the present invention. FIG. 2 is a plan view of the suspended matter collection device shown in FIG. 1. It is sectional drawing which follows the III-III line | wire in FIG. 2, It is a figure shown by a partial center longitudinal cross-sectional view about the water absorption member which has a suspended solid suction port. FIG. 2 is a schematic plan view of the suspended matter collection device shown in FIG. 1 modified to provide additional horizontal water flow. Experimental case 1 to confirm the situation of the water flow that occurs in the vicinity of the suspended matter suction inlet when a horizontal flow is given from all sides to the suspended matter suction intake by simulation analysis of the three-dimensional flow of the river It is a figure which shows the conditions. It is a figure which shows the result of the experiment case 1, Comprising: (A) is the state of a horizontal direction water flow, (B) is a figure which shows the state of a downward direction water flow. FIG. 6 is a diagram showing conditions for Experiment Case 2. It is a figure which shows the result of the experiment case 2, Comprising: (A) is the state of a horizontal direction water flow, (B) is a figure which shows the state of a downward direction water flow. FIG. 10 is a diagram showing conditions for Experiment Case 3. It is a figure which shows the result of the experiment case 3, Comprising: (A) is the state of a horizontal direction water flow, (B) is a figure which shows the state of a downward direction water flow.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspended substance collection apparatus 10 Trap member 11 Frame 12 Floating body 13 Support bases 14A and 14B Suspension member 20 Absorbing member 21 Suspended substance intake water intake port 22 Tubular foot part 30A-30D Nozzle member 30A1 Nozzle cylinder 30A11 Slit 40A-40D Water supply pipe means 50 Suction hose 60 Suction pump 70 Suspended substance recovery processing device 80 Water supply pump

Claims (6)

Suspended substance suction intake formed as a circular opening is disposed below the water surface in the direction of the water surface, and the suspended substance floating in the water area is guided toward the suspension substance suction intake, In the suspended matter collection method of sucking together with water by a suction pump from the suspended matter intake water intake and feeding it to the suspended matter recovery processing device via the suction hose,
In the surface layer range where the suspended suspended matter floats in the water area and at a shallow water depth position where the suspended matter suction intake port is disposed, the suspension material suction intake port is centered around the suspension material in the circumferential direction. Generating a horizontal water flow substantially parallel to the water surface uniformly directed in a substantially tangential direction of the circular suspended substance inhalation intake port by ejection from nozzle members installed at a plurality of locations that are substantially evenly distributed;
Generating a downward water flow by colliding each horizontal water flow in the upper area of the suspension material intake intake;
A suspended matter collecting method, wherein the suspended suspended matter drifting in the surface layer range is guided to the suspended matter suction intake port by being placed on the horizontal water flow and the downward water flow.   The suspended solid collection method according to claim 1, wherein the horizontal water flow is generated by a jet flowing out from a slit jet port extending in a horizontal direction and a direction perpendicular to the horizontal water flow. A water-absorbing member having a suspension substance suction intake port that is circularly open toward the water surface, and the suspension material suction intake port communicates with a suction hose connected to a suction pump;
It has a substantially polygonal frame in plan view with floating bodies attached to the lower part of each corner, and the frame holds the suspension material intake water intake port so that it is located below the water surface at the center of the frame. A saddle member,
Attached to each side of the frame so as to be distributed substantially uniformly in the circumferential direction around the suspension substance suction intake, and toward the substantially tangential direction of the circular suspension substance suction intake A nozzle member having a water outlet for uniformly directing a horizontal water flow substantially parallel to the water surface;
In order to cause the horizontal water flow generated from the nozzle member to collide above the suspended substance suction inlet, the suspended substance suction inlet is positioned deeper than the depth position of the nozzle member. An adjustment member for adjusting the position of the suspended material intake and / or the nozzle member;
Water supply pipe means for supplying water to each nozzle member;
Suspended substance collection device characterized by having.   The nozzle member is formed as a cylindrical body, and the water jet port extends in the horizontal direction and in a direction perpendicular to the horizontal water flow to generate a wide horizontal water flow in the cylindrical body. The suspended substance collection device according to claim 3, wherein the suspended material collection device is formed. The suspended substance collection device according to claim 4 , wherein each of the cylinders is configured so that a direction of a water flow from the slit ejection port with respect to the suspended substance suction water intake is adjustable.   The sub-nozzle member which has the water jet nozzle which produces the cyclic | annular horizontal direction water flow on the outer side of the said floating body is attached to each said nozzle member, The any one of Claims 3-5 characterized by the above-mentioned. Suspended material collection device.

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