JP4538404B2 - Water purification apparatus, water pollution organism recovery ship, and water pollution organism treatment method - Google Patents

Description

  The present invention relates to a water purification apparatus, an aqueous pollutant recovery ship, and a method for treating an aqueous pollutant, for example, for purifying aqueous pollutants such as sea lions.

  For example, aquatic organisms that pollute lake water and the like have gas vesicles in the cells and form colonies, so that they float and settle in the water area. And, when the flying sea bream dies and rots, pollution such as pollution of lakes and odors occurs, which is a problem from the viewpoint of environmental conservation.

  As a method for treating water polluting organisms such as sea cucumber, which are factors of such environmental pollution, a sterilization method, a filtration recovery method, and various treatment methods have been proposed.

However, the sterilization method is a method of killing the sea cucumber using a chemical or the like, and a large amount of chemical is necessary, and since a chemical is used, it is necessary to consider environmental safety.
In addition, the filtration and recovery method is a method of physically recovering the sea cucumber using a filter cloth or the like, and there is a problem that a large-scale apparatus is required to process a large amount of the sea urchin.
Both treatment methods have a problem that they are not suitable for large-scale treatment of open water areas.

  In view of this, the present applicant has proposed one of the processing methods that uses the cavitation processing device to sink the flying sea urchin and suppress the occurrence of the pollution (Patent Document 1).

Japanese Patent Laid-Open No. 11-47785

  However, although the cavitation treatment device has a very high sedimentation performance of the sea bream, it requires a pump pressure of about several atmospheres. For example, when a large amount of sea bream must be treated or in large-scale treatment such as Kasumigaura However, an increase in processing cost is a problem.

  In view of the above problems, an object of the present invention is to provide a water purification device, an aqueous pollutant recovery ship, and an aqueous pollutant treatment method that reduce the processing cost.

The first invention of the present invention for solving the above-mentioned problems includes an inflow passage for flowing in lake water containing water-contaminated organisms, a fine bubble generator for supplying fine bubbles to the inflowed lake water, and the like, a floating tank for collecting concentrated water in which fine bubbles generated consists deposited aqueous contaminated taxa at the water surface area, together with formed by and a water pollution biological treatment device for processing the collected aqueous contaminated biome The water-polluting biological treatment device is a purification device having an orifice, a venturi or a jet nozzle, and at the same time as generating cavitation, air is mixed into the water introduced into the water-polluting biological treatment device, and its discharge In the water purification apparatus, the liquid is supplied as fine bubbles into the levitation tank .

The second invention is the first invention, the air bearing vessel in waters purification device which is characterized that you have a weir for collecting concentrated water in which fine bubbles are made of adhering aqueous contamination group of organisms.

  According to a third invention, in the first or second invention, the fine bubble generator is any of an air diffuser tube, a cyclonic bubble generator, a pressurized bubble generator, or an ejector bubble generator in which air is supplied. The water purification apparatus is characterized by being one.

According to a fourth aspect of the present invention, there is provided the water purification apparatus according to any one of the first to third aspects, wherein the water-contaminated organism is a sea lion.

According to a fifth aspect of the present invention, there is provided an aquatic organism recovery vessel characterized in that any one of the first to fourth water purification devices is provided in a ship body.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, there is provided an aqueous pollutant recovery vessel having a collection device for collecting the aqueous pollutant organism group from the water area.

According to a seventh aspect of the present invention, a fine bubble supplied from a fine bubble generating device is caused to adhere to an aqueous pollutant, and the aqueous pollutant-containing liquid is recovered in a water surface area, and the aqueous pollutant is concentrated. The present invention resides in a method for treating a water-polluting organism characterized by inactivating the growth ability of the water-polluting organism by supplying the contained liquid to an orifice, a venturi or a jet nozzle that causes cavitation.

According to an eighth aspect of the present invention, in the seventh aspect of the invention, there is provided a method for treating an aqueous polluted organism, characterized in that a discharge liquid from an orifice, a venturi or a jet nozzle that is a cavitation generating device is the fine bubbles.

  According to the present invention, for example, water-contaminated organisms such as sea lions can be concentrated and treated, which is effective for large-scale environmental pollution countermeasures.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

A water purification apparatus according to Example 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram illustrating a water purification apparatus according to a first embodiment.
As shown in FIG. 1, the water purification apparatus 10A according to the present embodiment includes an inflow passage 12 through which lake water 11 and the like containing aqueous polluted organisms flows, and fine bubbles 13 that supply the fine bubbles 13 to the lake water 11 and the like that flow in. A bubble generator 14, a levitation tank 18 having a weir 17 for collecting concentrated water 16 composed of an aqueous polluted organism group 15 to which the generated fine bubbles 13 are attached, and an aqueous polluted organism group 15 collected by the weir 17 are treated. And an orifice 31 which is an aqueous contaminated biological treatment apparatus.

  In the drawings in the present embodiment, the lake water 11 etc. flows into the levitation tank 18 from the vicinity of the upper part of the levitation tank 18, but the present invention is not limited to this, for example, the lower part of the levitation tank 18. You may make it flow in from. Inflow from the lower part of the levitation tank 18 is more preferable because it allows time to contact the fine bubbles.

  Here, examples of the water-polluting organisms in the present invention include phytoplankton such as blue-green algae. The aoko has water bubbles and floats on the surface of lake water, etc. or about 0 to 1 m below the surface of the water, resulting in eutrophication due to water retention, phosphorus, nitrogen, etc. flowing in a large amount. In the case of abnormal breeding, it is a polluted organism such as water pollution, for example, there are many types such as cyanobacterium microcystis and anabena.

The structure of the aoko is phytoplankton, and the size of one of them is about 10 μm, but these aggregate to form a group of about several hundred μm, forming an aquatic organism group 15, which causes further factors such as pollution. It will go on.
In particular, when a large number of blue sea lions occur, the surface of the lake becomes green, and when it decays, it gives off a bad odor, which causes environmental pollution.

In the present invention, the fine bubbles 13 generated by the fine bubble generator 14 are supplied to the levitation tank 18 from the fine bubble supply pipe 14a. Then, the fine bubbles 13 supplied here are attached to the aqueous pollutant organisms 15 when they float in the levitation tank 18 and actively float the aqueous pollutants 15 near the water surface.
In the present embodiment, a fine bubble supply pipe 14 a that generates fine bubbles 13 from the vicinity of the lower end side of the inlet of the lake water 11 in the floating layer 18 is installed.

Then, the aqueous polluted organisms 15 that have floated due to the attachment of the fine bubbles 13 are guided toward the weir 17 provided on the downstream side of the flow according to the flow of the lake water 11 into the floating tank 18 through the pump P _1. The concentrated water discharge port 18a passes through the concentrated water discharge port 18a, and the concentrated water 16 is obtained by concentrating the aqueous polluted organism group 15 and the collected aqueous polluted organism group 15 with the fine bubbles 13 attached thereto. Then, and then supplied to the orifice 31 of the concentrated water 16 in the pump P _2. Then, the supplied concentrated water 16 effectively activates the growth ability of the aqueous polluted organism group 15 contained in the concentrated water 16 by the cavitation action of the orifice. That is, when passing through the office 31, gas vesicles of the water-contaminated organism group are collapsed by the action of bubble cavitation generated by increasing the flow velocity, and the proliferation ability is activated.

The aqueous contaminated biological treatment apparatus is not limited to the orifice 31 that generates cavitation, and may be, for example, a venturi or a jet nozzle. A plurality of these may be installed.
The treated water 33 in which the water-contaminated organism group 15 is killed and activated is returned to a lake, a pond or the like 10. Further, the purified water 34 obtained by concentrating and removing the aqueous polluted organisms 15 in the levitation tank 18 is also discharged to the lakes, ponds, etc. 10 in the same manner.

As a result, the lakes and ponds 10 are purified and water pollution is reduced.
In particular, conventionally, in the large-area lake 10, when the cells of the water-polluting organism group 15 are simply destroyed using only the orifice 31, it is necessary to treat a large amount of the lake water 11 as it is. For example, about 0.5 to 20% of the lake water 11 is supplied to the orifice 331 beyond the weir 17 and the amount of processing can be reduced. As a result, the cavitation processing efficiency is improved, and the processing cost of large-scale processing can be reduced.

  An example of the fine bubble generator 14 is shown in FIGS. 2 and 3-1 to 3.

  In the water purification apparatus 10 </ b> B as shown in FIG. 2, the air 20 may be positively supplied to the aeration tube 21 to generate the fine bubbles 13.

  Further, a cyclone type bubble generating device 25 that generates air bubbles 13 by supplying air 20 and water 22 as shown in FIG. 3-1, and air 20 and water 22 as shown in FIG. 3-2. A pressurized bubble generator 26 that generates fine bubbles 13 or an ejector-type bubble generator 27 that generates air bubbles 13 by supplying air 20 as shown in FIG. Although it can illustrate, this invention is not limited to these, As long as it is an apparatus which can generate | occur | produce the fine bubble 13 efficiently, any thing may be used.

Further, as shown in FIG. 4, treated water 33 containing fine bubbles 13 generated by cavitation operation by the orifice 31 is introduced from the vicinity of the lower portion of the floating tank 18.
The water-polluting organisms damaged by this cavitation are unlikely to float and are discharged by purified water 34.
This eliminates the need for separately installing the microbubble generators shown in FIGS. 2 and 3-1 to 3-3, and the device can be made compact.

Such a water purification apparatus may be installed alone, or a partition part may be provided in a part of the lake to integrate the concentration of water polluted organisms.
Further, when the inflow speed of the inflowing lake water 11 is small, a forced flow may be generated so as to go to the concentrated water discharge port 18a of the weir 17 of the levitation tank 18.

  In addition, although a weir is provided in this embodiment, concentrated water may be collected in the water surface area of the levitation tank 18 or in the vicinity of the water surface area without providing the weir.

Next, an embodiment of an aqueous pollutant recovery ship equipped with the water area purification apparatus will be described with reference to the drawings.
FIG. 5 is a schematic view of a water pollution organism recovery ship.
As shown in FIG. 5, the water-polluting organism recovery ship 40 according to the present embodiment is configured by installing a water purification device including a floating tank 18 and an orifice 31 in a ship body 41. The water pollution organism recovery ship 40 may be one that can be guided by radio from the shore.

Then, the lake water 11 containing the aqueous polluted organism group is collected by the collection device 42 that collects the aquatic polluted organism group 15 provided at the stern of the ship body, and is supplied into the levitation tank 18 by the pump P ₁ . Then, to generate micro-bubbles from the fine air bubble generation device 14 provided in the floating tank 18, continuously a large amount of lake water as to life-and-death of the cells supplied to the orifice concentrated water 16 in the pump P ₂ as previously described To be processed.

  By returning the treated water 33 and purified water 34 treated by the water-contaminated organism recovery ship 40 to the lake 10, the lake can be purified.

  As described above, by using the water area purification apparatus of the present invention, the water bubbles are levitated by adhering the fine bubbles supplied from the fine bubble generator to the water-polluting organisms, and the liquid containing the water-polluting organisms in the surface area. The ability to recover the water-contaminated organisms can be deactivated by supplying the collected liquid containing the water-contaminated organisms to an orifice, venturi or jet nozzle that causes cavitation. Can be performed efficiently.

  At this time, the liquid discharged from the orifice, venturi, or jet nozzle that is a cavitation generating device may be made more efficient by using the fine bubbles.

  According to the present invention, it is possible to greatly reduce the increase in processing cost when a large amount of water polluted organisms such as sea lions have to be processed (for example, large-scale processing such as Kasumigaura and Lake Biwa). You may make it use for the treatment of the water pollution living organism | raw_food in a fresh water area.

  As described above, the water purification apparatus according to the present invention can reduce the processing cost of a large-scale treatment by concentrating water-contaminated organisms such as sea cucumbers that occur in large quantities such as lake water. Contributes to environmental purification in closed water areas.

1 is a schematic diagram of a water purification apparatus according to Embodiment 1. FIG. It is the schematic of the other water purification apparatus which concerns on Example 1. FIG. 1 is a schematic view of a fine bubble generating device of a water purification device according to Embodiment 1. FIG. It is the schematic of the other fine bubble generator of the water purification apparatus which concerns on Example 1. FIG. It is the schematic of the other fine bubble generator of the water purification apparatus which concerns on Example 1. FIG. It is the schematic of the other water purification apparatus which concerns on Example 1. FIG. It is the schematic of the other water pollution biological recovery ship which concerns on Example 2. FIG.

Explanation of symbols

10A to 10C Water purification device 10 Lakes, ponds, etc. 11 Lake water 12 Inflow passage 13 Fine bubbles 14 Fine bubble generator 15 Water polluting organisms 16 Concentrated water 17 Weir 18 Floating tank 31 Orifice 33 Treated water 34 Purified water 34

Claims (8)

An inflow passage through which lake water containing water-contaminated organisms flows,
A microbubble generator for supplying microbubbles to the inflowing lake water, etc .;
A flotation tank that collects concentrated water composed of water-contaminated organisms to which the generated fine bubbles are attached in the water surface area;
An aqueous pollutant treatment apparatus for treating the collected aqueous pollutant organism group ,
The water-polluting biological treatment apparatus is a purification device having an orifice, a venturi or a jet nozzle, and at the same time as generating cavitation, air is mixed into the water introduced into the water-polluting biological treatment apparatus, and its effluent. A water purification apparatus characterized by being supplied as fine bubbles into a floating tank . In claim 1,
Wherein the floating vessel, water purifier, wherein a call with a weir for collecting concentrated water in which fine bubbles are made of adhering aqueous contamination group of organisms. In claim 1 or 2,
An apparatus for purifying a water area, wherein the fine bubble generating device is any one of an air diffuser tube, a cyclonic bubble generating device, a pressurized bubble generating device, or an ejector bubble generating device supplied with air. In any one of Claims 1 thru | or 3 ,
The water purification apparatus, wherein the water-polluting organism is a sea lion. An aqueous pollutant recovery vessel comprising the water body purification device according to any one of claims 1 to 4 in a ship body. In claim 5 ,
An aquatic organism recovery vessel having a collection device for collecting aquatic organisms from a water area.   The microbubbles supplied from the microbubble generator are caused to attach to the water-polluting organisms, and the liquid containing the water-polluting organisms is collected in the water surface area. A method for treating a water-polluting organism, characterized in that the ability to incubate the water-polluting organism is inactivated by using an orifice, a venturi, or a jet nozzle. In claim 7 ,
A method for treating an aqueous pollutant, characterized in that the discharge liquid from an orifice, venturi or jet nozzle, which is a cavitation generator, is the fine bubbles.

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