JP2007107373A - Method for collecting floating marine algae - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method wherein a circulation flow on the surface layer water is generated around a plurality of existing or new wave-dissipating units provided on the water surface of a motorboat racing course, so that floating algae like blue-green algae gathered on its periphery are attached to a floating collecting tank, subsided and withered for waste disposal and are efficiently collected. <P>SOLUTION: The invention is provided halfway between a pier and the wave-dissipating device or between a wave-dissipating body on the pier side and a wave-dissipating body on the course side and forms a surface-layer current around the wave-dissipating device for reducing generation of the floating algae such as a blue-green algae or the like. The generated floating algae such as blue-green algae or the like are attached and collected with a mat or a rope, are compressed and crushed by a water-stream generator, and furthermore the surface-layer current is generated in the floating dust for circulation, so as to be effectively collected. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for collecting floating algae, and more specifically, by spraying mixed oxidizers on floating algae such as sea cucumbers from an electrolytic solution tank provided around a number of existing or new wave-dissipating devices provided on the water surface of a racetrack. Dried and settled, compressed floating algae such as sea cucumbers gathered in the vicinity with a water flow generator, attached the remaining floating algae such as sea cucumbers with chemical fiber mat or rope, or formed a circulating flow in the surface water of the race water surface In addition, the present invention relates to a floating dust collection method for efficiently collecting and disposing of waste by using a chemical fiber mat or rope disposed in water.

  The race water surface of the racetrack is divided into a fresh water race water surface and a sea water race water surface, and floating algae such as blue sea lions are likely to occur in fresh water, and red tide is likely to occur in sea water. The race water surface of a Japanese racetrack is mostly a freshwater race water surface that is closed, and therefore, when the temperature is high, floating algae such as blue-green algae breed, causing bad odor and damaging the landscape. A huge amount of work and costs are required.

  Floating cyanobacteria such as blue-green algae include anabena, oshiratria, microkistis, etc. The characteristics of blue-green algae are a few μm algae that form a colony, but repeat cell division by plant photosynthesis and double the gas in a day. Since it has vesicles, it floats in the surface water, and at night it lacks oxygen, so the fish die and covers the surface of the water, and its protein rots and generates an unbearable odor.

  Floating cyanobacteria such as blue-green algae (1) have a lot of nutrients (phosphorus / nitrogen) in water, (2) there is sunshine, (3) the water temperature is 25 ° C or higher, and (4) if it is a staying water area It is known to grow abnormally in the surface water area, and if one of these conditions is lacking, floating cyanobacteria such as blue-green algae will not be generated.

  Therefore, as a measure to prevent the growth of floating algae such as sea cucumbers, (1) suppress or remove the inflow of nutrients into water, (2) shield from light with a tent, etc. (3) circulate the bottom water surface up and down, (4) Circulating surface water, (5) Treating with chemicals such as hypochlorous acid, (6) Aggregating and precipitating propagated sea cucumbers, floating under pressure, recovering and removing. .

Conventional purification measures include:
(A) Although it suppresses the elution of bottom mud nutrients for the purpose of aeration, it circulates up and down the surface water area, prevents stagnation, increases the dissolved oxygen amount (DO), activates the organism, and causes a food chain, Processing work and costs increase and are not realistic.

  (B) Although there is a method of absorbing nutrient salts for the purpose of vegetation, it takes a long time, and a desired effect cannot be obtained because microorganisms adhere to and decompose on algal roots.

  (C) Although water is fountained to prevent the surface water from staying, it is not effective because only the surface water in that portion is refluxed.

  (D) In addition, dead leaves etc. will flow into the water surface of the racetrack due to running water, wind, etc., or dust bottles, paper, etc., discarded by the spectators will float on the race water surface. Since it winds, it may cause a race boat failure. Therefore, it is necessary to quickly scavenge and collect dust such as plastic bottles and paper floating on the race water surface with a minesweeper with a net attached at the tip between races.

As a measure to prevent the breeding of floating algae such as sea cucumbers on the water surface of the racetrack (about 500,000 m ³ with a water volume of 1)
(1) In order to remove nutrient salts, there is a method in which phosphorus is 0.04 ppm and nitrogen is 0.7 ppm, which is coarsened with a flocculant and filtered, but this is not economical because the apparatus becomes large.

  (2) In order to suppress the growth of floating algae such as sea cucumbers, it is considered that the water temperature is lowered, but this is also not realistic because the amount of target water is large.

  (3) In order to suppress the growth of floating algae such as sea cucumbers by photosynthesis, even if it is intended to shield the surface water with a tent or the like, it is impossible to carry out because the area is more than 1/3 of the entire water surface of the racetrack.

  (4) Therefore, it is essential to circulate at the required locations for surface water flow on the water surface of the racetrack. Examples of water surface flow generators that can more effectively suppress the mass generation of plankton and the like that form buoyant film-like groups near the water surface include, for example, JP-A-2001-295238 (water surface flow generator), JP-A-2001-70965 (water treatment device), JP-A-2000-334493 (surface water flow generation pump system and surface water flow generation method), JP-A 2000-336637 (floating water absorption equipment), JP 2000-303348 (water purification device) And water purification methods) have been proposed.

  (5) Since the target particle size of floating algae such as sea cucumbers to be collected is several μm to several tens of μm, it immediately becomes clogged when it is agglomerated and filtered, so it cannot be used. Processing is required.

  (6) Furthermore, although a method of disinfecting and sterilizing floating algae such as blue-green algae with a sodium hypochlorite solution is also considered, it is not adopted because of the problem of chemical damage.

  In this invention, a mixed oxidant is sprayed on floating algae such as blue seaweed from an electrolytic solution tank provided around a number of existing or newly installed wave-dissipating devices provided on the water surface of a racetrack, and gathers in the vicinity. Mat or rope placed underwater by compressing and crushing floating algae such as blue sea urchin with a water flow generator and attaching the remaining floating algae such as blue sea urchin with a mat or rope, or forming a circulating flow on the surface water of the race surface It is the floating dust collection method which collects efficiently via.

  The first gist of the present invention is a cross-sectional umbrella-type course side provided with a float inside and a guard rail at the top, having a required height, diameter and volume, and provided at a required location on the race water surface of a racetrack. A floating body having a wave-dissipating body and a cross-section umbrella-type quay-side wave-dissipating body having a float inside and forming a U-shaped wave-dissipating space connected to the course-side wave-dissipating body at a predetermined interval In the type wave-dissipating device, an electrolytic solution tank, a mat or a rope is provided around the wave-dissipating device, and the mixed oxidant obtained by electrolyzing the salt from the electrolytic solution tank is sprayed on floating algae such as sea cucumber and settled. This is a floating algae collection method that collects residual floating algae such as sea cucumbers that die and collect in the vicinity thereof via the mat or rope.

  According to a second aspect of the present invention, there is provided a float inside, a guard rail at the top, a required height, a diameter and a volume, and a cross-sectional umbrella-type course-side eraser provided at a required location on the race water surface of a racetrack. A floating type having a wave body and a cross-sectional umbrella-type quay-side wave-dissipating body having a float inside and forming a U-shaped wave-dissipating space connected to the course-side wave-dissipating body at a predetermined interval In the wave-dissipating device, the course side or the quay-side wave-dissipating body is provided with a submersible pump, a water flow generator, and a mat or rope in the water. Is formed and compressed and pulverized, and floating algae such as sea cucumber are collected via the mat or rope.

  (1) A wave-dissipating device having a floating algae collection function according to the present invention is installed in the wave-dissipating body B or C of a racetrack, and a circulating flow is generated by a water flow generator around a number of existing or newly installed wave-dissipating devices. In addition, it eliminates the retention of water and suppresses or prevents the occurrence of floating algae such as blue-green algae around it.

  (2) As a result, if the surface water containing a large amount of oxygen is mixed with the bottom water by the water circulation action to recover the dissolved oxygen amount (DO), the aerobic microorganisms are actively activated to purify the water. At the same time, the bottom water becomes an aerobic condition, and the effect of suppressing the elution of causative substances such as iron, manganese, ammonia, hydrogen sulfide, and nutrient salts can be obtained.

  (3) And when floating algae such as blue sea urchins occur in the vicinity of the course-side wave-dissipating body B and the quay-side wave-dissipating body C, both the course-side wave-dissipating body B or the quay-side wave-dissipating body C Alternatively, the algae such as the sea cucumber are attached to the surroundings by the attaching ropes 20, 20.

  (4) Since the submersible pump 34 having the flat water flow generating port 36c at the tip is provided at a required portion of the course side wave breaker B or the quay side wave breaker C so as to be movable vertically and horizontally, the wave breaker It is easy to adjust the depth and angle of the surface water of the nearby surface water, and prevent the generation of algae such as blue-green algae.

  (5) The frame 32 for moving the submersible pump 34 up and down is provided with the U-shaped rails 32a and 32a in parallel and vertically inside the wave-dissipating body B or C, and is fitted into the U-shaped rails 32a and 32a. Since the submersible pump 34 is fixed to the frame 32c having one end connected to the rollers 32b and 32b, and the chain 38 is connected to the frame 32, the vertical movement depth by manual or required drive means becomes easy. Prevent the generation of algae.

  (6) An electrolytic tank 40 for sterilizing algae such as blue sea cucumber is provided at a required location of the wave-dissipating body B or C, and a mixed oxidant obtained by electrolyzing salt is injected into the tank 40. Since it is sprayed on the surface and killed, it does not adversely affect the environment.

  (7) In a floating wave-dissipating device having a wave-dissipating body provided along the quay of the race water surface, an underwater pump connected to the course side and / or the quay-side wave-dissipating body and water flow generation Since the machine creates a circulation flow in the surface water, dust such as plastic bottles and paper floating in the water can be guided to the required locations, making recovery much easier, especially with dead leaves wrapping around the propeller of the race boat. Disappears.

  In the floating algae collection method according to the present invention, a circulating flow is formed around a number of existing or newly installed wave-dissipating devices provided on the water surface of a racetrack to suppress or prevent the occurrence of floating algae such as sea lions. In the event that it occurs, a mixed oxidizer obtained by electrolyzing salt from a sterilized electrolyte tank is sprayed on floating algae such as blue sea urchins to wither and sink. This is a floating dust collection method that compresses and pulverizes by a circulating flow from a pump, and further efficiently collects remaining floating algae such as sea cucumbers with a mat or rope.

  An embodiment of the floating algae collection method according to claim 1 will be described. FIG. 1 shows that the wave-dissipating devices A, A... Provided along the quay of the race water surface of the racetrack are connected in a row, and six race boats that have launched from the pit P have the second turn mark TM2. FIG. 2 is a schematic plan view showing a state where the vehicle is traveling toward the vehicle. TM1 represents a first turn mark and S represents a stand.

  In FIG. 6, the wave-dissipating device A is provided with a float F inside, and a predetermined interval is placed with respect to the substantially cross-sectional umbrella-shaped course-side wave-dissipating body B having the required height, diameter, and volume. Similarly, substantially cross-sectional umbrella-shaped quayside wave-dissipating bodies C with floats F provided therein are arranged and formed at predetermined intervals in the longitudinal direction on the upper inclined surfaces of the course-side wave-dissipating body B and the quayside-side wave-dissipating body C. Angle-shaped square pipes 12 and 12 are fitted and fixed in the grooves b and c, the course-side wave-dissipating body B and the quay-side wave-dissipating body C are connected, and the course-side wave-dissipating body B and the quay-side wall A U-shaped wave-dissipating space R is formed between the side wave-dissipating body C.

  In FIG. 6, an L-shaped frame body 14 is provided on an upper portion of the angle-shaped square pipe 12 corresponding to the U-shaped wave-dissipating space R, and a guard rail GR is provided on the L-shaped frame body 14 in the longitudinal direction. The C-shaped steels D and D are fixed with the required width on the extended line of the angle-shaped square pipe 12, and the C-shaped steels D and D have suspension portions 10a and 10a at the upper ends, and the submersible pump 34 and the water flow are generated inside. The casing 10 in which the machine 36 is arranged is provided vertically.

  As shown in FIGS. 5 to 7, the aquatic or the like using the chemical fiber mat 20 for attaching algae and the like having a required area provided at the tip of either or both of the course-side wave-dissipating body B or the quay-side wave-dissipating body C. In this embodiment, the algae is attached and recovered, and the surface water around it is circulated by the submersible pump 34 and the water flow generator 36.

  FIG. 3 is a view of chemical fiber ropes 20a, 20a,... For attaching algae and the like having a required diameter and length at the tip of either or both of the course-side wave-dissipating body B and the quay-side wave-dissipating body C. It is the Example which connected the upper end and arrange | positioned perpendicularly in water.

  FIG. 5 shows that the chemical fiber mats 20 and 20 for attaching algae such as blue-tailed algae having a required area are arranged in a floating state at both ends of the course-side wave-dissipating body B or the quay-side wave-dissipating body C. Furthermore, the Example which connected the chemical fiber ropes 20a, 20a ... for algae adhesion, such as a giant sea lion, and was arrange | positioned perpendicularly in water is shown typically.

  In FIG. 6, a submersible pump 34 provided with a water flow generator 36 having a required height, diameter, and capacity is arranged vertically in the water inside the course-side wave absorber B. Specifically, rollers 32b and 32b are rotatably fitted in U-shaped rails 32a and 32a provided vertically and in parallel at a required interval on a frame 32 extending horizontally from the course-side wave absorber B, The rollers 32b and 32b are fixed to both side surfaces of the submersible pump 34, and the upper end of the required chain 38 having the lower end fixed to the submersible pump 34 is fixed to a required portion of the frame 32, and manually or required drive means (not shown). To adjust the depth of water so that it can be moved up and down to form a circulating flow in the surface water.

  The other end of an underwater cable (not shown) having one end connected to the submersible pump 34 is connected to an on-shore power source (not shown) via the course-side wave-dissipating body B or the quay-side wave-dissipating body C.

  If necessary, the submersible pump 34 integrated with the water flow generator 36 is also provided in the U-shaped wave-dissipating space R below the course-side wave-dissipating body B or the quay-side wave-dissipating body C in FIG. .

  As shown in FIG. 17, the water flow generator 36 includes a lower fixed pipe 36a having a lower end connected to the submersible pump 34, an upper pipe 36b slidably fitted thereto, and a cup connected to the upper end of the upper pipe 36b. The tip end fitted and connected via the ring 36b 'is composed of a flat water flow outlet (nozzle) 36c.

  The upper end of the required chain 38 having its lower end fixed to the water flow generator 36 is fixed to a required portion of the frame 32, and can be moved up and down manually or by required driving means (not shown), and the depth of the water is adjusted to control the surface water. To form a circulating flow.

  11 and 12, a flat water discharge outlet (nozzle) 36c is connected to the tip of the water flow generator 36, and the flat water discharge outlet (nozzle) 36c is the surface layer water around the course-side wave-dissipating body B. To form a circulating flow.

Next, an embodiment in which the underwater depth of the water flow generator 36 is adjusted by a pipe will be described.
9 to 11, in the wave-absorbing device having a floating algae recovery function according to claim 5, the water flow generator 36 includes an internal fixed pipe 36a and an upper pipe 36b slidably fitted thereto. The lower end of the internal fixed pipe 36a is connected to the submersible pump 34, and the upper end of the required chain 38 to which the lower end is fixed is fixed to a required portion of the frame 32, and is moved up and down by manual or required drive means (not shown). A submersible pump 34 and a water flow generator 36 that do not generate algae such as sea cucumbers are provided in the U-shaped wave-dissipating space R by adjusting the depth of the water so that it can move freely.

  The water flow generator 36 slidably fits the upper and lower pipes 36a and 36b, and adjusts the height (underwater depth) of the flat water flow outlet (nozzle) 36c by moving the upper pipe 36b up and down as desired. Make it free.

  12-14, the wave-dissipating device having the floating algae recovery function according to claim 6 is provided with a submerged pump 34 in the U-shaped wave-dissipating space R and a water flow generator 36 connected to the submerged pump 34 Provided outside the U-shaped wave-dissipating space R, the water flow generator 36 slidably fits the upper and lower pipes 36a and 36b, and moves the upper pipe 36b up and down as desired to produce a flat water flow outlet ( Nozzle) 36c height (underwater depth) and angle can be adjusted.

  In the floating algae recovery method of the present invention, an electrolytic solution tank 40 for sterilizing algae such as blue-green algae is provided at a required portion of the wave-dissipating body B or C, and a mixed oxidant obtained by electrolyzing salt is injected therein. Since the mixed oxidant is sprayed from the tank 40 over the water spilling etc., it is killed, so there is no adverse environmental impact.

  In FIG. 8, a player protection cushion mat 42 is laid horizontally on the course-side wave absorber C.

FIG. 6 is a schematic plan view showing a state in which six racing boats that have run from the pit are running toward the second turn mark, with a wave-dissipating device suspended and fixed on the water surface such as a racetrack. 1 circulates in the surface water around the wave-dissipating device having a floating algae-collecting function according to the present invention on the water surface such as a racetrack of FIG. The partial expansion plane schematic of an Example. FIG. 3 is a partially enlarged schematic plan view of an embodiment in which algae such as blue-green algae are attached and collected by a rope provided in the wave-dissipating device in the wave-dissipating device embodiment of FIG. FIG. 4 is a partially enlarged schematic plan view of an embodiment in which algae such as sea cucumbers are adhered and collected by an attachment mat and rope provided on the water surface in the embodiment of FIGS. FIG. 4 is an enlarged schematic side view of another embodiment schematically showing a state in which floating algae such as sea cucumbers are attached and collected with a rope provided vertically below the water surface of the wave-absorbing device of FIG. 3. These are the enlarged side schematic diagrams of the Example of the water flow generator provided in the inside of a wave-extinguishing apparatus and the outer side. FIG. 2 is a partially transparent enlarged cross-sectional schematic view of an embodiment of a water flow generator provided in a wave-absorbing device. FIG. 4 is a schematic partial plan view of another embodiment in which a wave-dissipating device is floatingly anchored and fixed to the water surface such as a racetrack as in FIG. FIG. 2 is an enlarged side view of a wave-dissipating device and a water flow generator provided therein. FIG. 10 is a plan view of FIG. 9. FIG. 11 is a schematic sectional side view taken along the line X1-X1 of FIG. FIG. 2 is a schematic side view of a wave-dissipating device and a water flow generator provided outside thereof. FIG. 13 is a schematic plan view of FIG. 12 in which the submersible pump and the water flow generator are removed from the U-shaped wave-dissipating space. FIG. 14 is a partial cross-sectional side view schematically showing X1V-X1V in FIG. 13. FIG. 15 is a partially perspective enlarged side cross-sectional schematic view of a shortened pipe of the water flow generator of FIGS. FIG. 16 is a partially transparent enlarged side sectional schematic view in which a pipe of the water flow generator of FIG. 15 is extended. FIG. 17 is a partially transparent enlarged side sectional schematic view of the water flow generator of FIGS. FIG. 15 is a partially enlarged side schematic view of another embodiment of a water flow outlet (nozzle) removed from the water flow generator of FIGS. FIG. 19 is a plan view of the water flow outlet (nozzle) of FIG. 18.

Explanation of symbols

A silencer;
B Course side wave absorber;
C Quayside wave absorber;
DC section steel;
F float;
GR guard rail;
P pit;
RU-shaped wave-dissipating space;
S stand;
TM1 first turn mark;
TM2 2nd turn mark;
10 casing;
10a suspension;
14 L-shaped frame;
20 Chemical fiber mat for attaching algae and other algae;
20a chemical fiber rope;
32 frames;
32a U-shaped rail;
32b roller;
34 submersible pumps;
36 water flow generator;
36a lower fixed pipe;
36b upper pipe;
36b 'coupling;
36c water discharge outlet (nozzle);
38 Chain;
40 Electrolyte tank for algae sterilization
42 Cushion mat.

Claims (2)

A cross-sectional umbrella-type wave-dissipating body provided with a float in the inside and a guard rail in the upper part, having the required height, diameter and volume, and provided at a required location on the water surface of the racetrack, And a cross-sectional umbrella-type quay-side wave-dissipating body forming a U-shaped wave-dissipating space connected to the course-side wave-dissipating body at a predetermined interval. The electrolytic solution tank, mat or rope is provided around the wave-dissipating device, and the mixed oxidizer obtained by electrolyzing the salt from the electrolytic solution tank is sprayed on floating algae such as the sea cucumber to settle and die. The floating algae collection method which collects floating algae, such as the remaining auko, which gathers via this mat or rope. A float on the inside and a guard rail on the top, with the required height, diameter and volume, and a cross-sectional umbrella-type course-side wave-dissipating body provided at the required location on the water surface of the racetrack. In a floating type wave breaker having a float and having a U-shaped wave breaker that forms a U-shaped wave breaker space connected to the course wave breaker at a predetermined interval , Comprising a submersible pump, a water flow generator, and a mat or rope in the water at the tip of either or either of the course side or the quay side, and compressing and pulverizing by forming a circulating flow in the surface water The floating algae collection method according to claim 1, wherein floating algae such as blue seaweed are collected through the mat or rope.

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