JPH0243986A - Method and equipment for killing red tide and water-bloom or the like - Google Patents

Abstract

PURPOSE:To make the utilized energy slight and to eliminate the anxiousness of secondary contamination in comparison with a method utilizing chemicals by directly irradiating the layers of red tide and water-bloom with ultraviolet rays and killing the microorganisms in the layers. CONSTITUTION:Both a red tide layer generated in the sea or a lake and a water-bloom layer S generated in the lake, etc., are irradiated with ultraviolet rays from an irradiation box 3 for ultraviolet rays provided to a floating body 1. Furthermore the floating body 1 is gradually moved and the whole layer S of the generated red tide or water-bloom is irradiated with ultraviolet rays to kill them. As a result, this operation is easy and the utilized energy is made slight and further the anxiousness of second contamination is eliminated in comparison with a method for utilizing chemicals.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and an apparatus for killing red tide, blue-green algae, etc. that are generated in large quantities in oceans and lakes due to the inflow of industrial wastewater, domestic wastewater, etc.

"Prior Art" Conventionally, there are the following methods for treating red tide and blue-green algae. To deal with red tide, there is a method of pumping up the seawater in which red tide has occurred on a large ship and disposing of it after filtering and separating it.Also, with regard to algal blooms, in large quantities such as in lakes and marshes, there is a method that is similar to the case of red tide. Similarly, there is a known method of pumping up algal blooms, filtering and separating them, and then disposing of them, and in home ornamental ponds, chemicals are added to kill them.

``Problems to be solved by the invention'' However, in the case of red tide, the amount of red tide is large, and large ships are required as treatment equipment, and a large amount of red tide must be pumped up and treated. , which requires a huge running cost. In the case of blue-green algae, if it occurs in large dams or lakes, as in the case of red tide, large treatment facilities and huge running costs are required. The problem of secondary contamination also remains. In particular, when this water is used for drinking water in large dams or lakes, it is not possible to introduce enough chemicals to completely kill algal blooms.

``Means for Solving the Problems'' This invention solves the conventional problems as described above, and its gist is that the red tide layer that occurs in the ocean or lakes, the red tide layer that occurs in lakes, etc. A device installed on the floating body irradiates the blue-green algae layer with ultraviolet rays from a device installed on the floating body, and the floating body is moved one by one to irradiate the entire layer of the red tide or blue-green algae layer that has occurred with ultraviolet rays to kill them. It is.

``Effect'' In other words, ultraviolet rays have a bactericidal power, and the microorganisms that form red tide and blue-green algae that are irradiated with it are killed, and the red tide and blue-green algae disappear. According to this invention, the ultraviolet radiation device is mounted on a floating body and can move through the layers of red tide, blue-green algae, etc., so unlike conventional devices, it is possible to collect red tide or blue-green algae water. Compared to processing, no power is required, and the entire generated layer can be easily processed. Further, water irradiated with ultraviolet rays does not cause secondary contamination unlike conventional chemical treatment, and is harmless to fish and shellfish even when used for drinking purposes.

Hereinafter, the present invention will be specifically explained based on the drawings.

"Example" In Fig. 1, reference numeral 1 denotes a circular floating body, 2 a support provided in the middle and inside of the body so as to be able to slide up and down, and 3 irradiated with ultraviolet rays provided at the lower end of the support 2. It is a box, and this irradiation box 3
They are covered with metal, mesh, etc. to allow water to pass through. Next, reference numeral 4B indicates irradiation 7; A is an ultraviolet lamp provided in 3, and power is transmitted to this ultraviolet lamp 4 from the outside via a cabtyre 5. In FIG. 2, reference numeral 6 indicates a guide cable for the floating body 1, and the one on the ward side is movable within the dam etc. by a winch 7 installed on the ground.

In order to kill red tide, etc. with the device configured in this way, first, as shown in Fig. 3, the depth of the radiation box 3 is adjusted according to the depth of the red tide, etc. 45, and then , the ultraviolet lamp 4 is turned on, and the guide rope 6. Layer S of red tide etc. by winch 7
All you have to do is move it inside. That is, by doing so, ultraviolet rays are irradiated to the red tide, etc. in the radiation box 3, and the microorganisms in the red tide are killed. Then, as the radiation box 3 moves within the layer S by the guide cable 6, the red tide layer S passes through the radiation box 3 one after another, and the entire red tide layer S can be irradiated with ultraviolet rays. can kill microorganisms. This operation is easy and can be automated, of course, and the energy used for this operation is mainly electricity for ultraviolet radiation, compared to the conventional method of pumping red tide together with water and filtering it. If you do, it will be small. still,
Treatment of blue-green algae is similar to the case of red tide mentioned above.

Next, what is shown in Fig. 4 is an example of a case where a large amount of red tide or blue-green algae is to be treated in the ocean or in a large lake or marsh. In addition to being able to move its own blades, it was also equipped with a power generator and could also light an ultraviolet lamp. In the figure, numeral 1 is a floating body configured in the shape of a raft, 3 is a radiation box, and the 5th one is a wire mesh on all four sides.
As shown in the figure, it is surrounded by a water-permeable partition wall 8 having a VC structure. Next, reference numeral 9 is a generator for lighting the ultraviolet lamp 4, and reference numeral 10 is a generator 9. Mekuru 11゜This is the prime mover that drives other pumps, etc.

In addition, in FIG. 4, reference numeral 12 is a ballast tank for moving the floating body 1 up and down, and this ballast tank 1
The depth of the ultraviolet lamp 4 is adjusted by adjusting the amount of paralast applied to the lamp 2.

In order to treat red tide and blue-green algae with the device configured in this manner, the depth of the ultraviolet lamp 4 must be adjusted to the layer S of the red tide and blue-green algae, the ultraviolet lamp 4 is turned on, and the floating object 1 is sailed. This can kill red tide and blue-green algae.

That is, as the floating body 1 navigates, the ultraviolet lamp 4
The ultraviolet rays can traverse the red tide and blue-green algae layers and irradiate these layers with ultraviolet light, killing the microorganisms within them.

This operation is also easy, and 1 floating body is used against red tide and blue-green algae.
Because it moves by itself, compared to the conventional method of pumping up red tide and blue-green algae layers and over-separating offshore, it consumes only a small amount of energy, and is especially useful for treating sewage from the ocean, large dams, lakes, etc. suitable for

Of the above two embodiments, in the first embodiment, the floating body is operated on land, and in the second embodiment, it is operated like a ship, but in both cases, the floating body is operated from land. Of course, it can be controlled remotely.

``Effects of the Invention'' As is clear from the above explanation, this invention directly irradiates ultraviolet rays to the layer of red tide and algae to kill microorganisms within the layer, so it is possible to remove the water that is present in red tide and algae. Compared to pumping water and filtering and separating layers, it is easy to operate, uses very little energy, and there is no risk of secondary contamination compared to methods that use chemicals. Are there any problems in dealing with red tide and blue-green algae? It's resolved.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing the state of use of the apparatus for killing red tide and blue-green algae according to the present invention, with a portion thereof being a sectional view. FIG. 2 is a plan view of the same, FIG. 3 is a schematic sectional view showing how it is used in a dam, etc., FIG. 4 is a vertical sectional side view of another embodiment of the device for killing red tide and blue-green algae, and FIG. The figure is its bottom view. Code explanation

Claims (3)

[Claims] (1) Ultraviolet light is irradiated from a device installed on the floating body 1 to the red tide layer S that has occurred in the ocean or lakes, and the blue-green algae layer S that has occurred in lakes and marshes. A method for killing red tide, blue-green algae, etc., characterized by radiating ultraviolet rays to the entire layer S to kill them. (2) Attaching an ultraviolet radiation device to the floating body 1,
A device for killing red tide, blue-green algae, etc., characterized in that the floating body 1 is provided with a drive device for moving the water surface. (3) The device for killing red tide, blue-green algae, etc. according to claim (2), wherein the ultraviolet radiation device is attached to the floating body 1 so as to be movable up and down.