JP2599799B2 - Breeding equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a breeding apparatus, particularly to purification and disinfection of breeding water used in cultivation and fisheries.

[Prior art] Securing fishery resources is an important issue for Japan. As one of the measures for this, the production of seeds for hatching and releasing fish eggs artificially is becoming active.

Fig. 2 shows the conventional techniques for seed production and fish farming described in, for example, "Aquaculture and Water: From Effective Utilization of Water Collection to Improvement of Coastal Environment" (Kazuo Sano, Scientist). It is a block diagram which shows the flow of the breeding apparatus by. In the figure, (1) is a filtration device, (2) is a filtered water storage tank, (3) is a water intake pump, (4) is a filtered water supply pump, (5) is a breeding water tank, and (6) is a discharge port. . Water for breeding, such as seawater or river water, is taken in by a water intake pump (3), filtered by a filtration device (1), and temporarily stored in a filtered water storage tank (2). The operation of the water intake pump (3) is controlled by the level of the filtered water tank (2). The water in the filtered water storage tank (2) is supplied to the filtered water supply pump (4) as necessary.
At the same time, the same amount of breeding water in the breeding aquarium (5) is discharged from the discharge port (6). The supply amount and the timing of water discharge, and the amount are determined by measuring the contamination status of the breeding water in the breeding aquarium (5) by water quality analysis or a water quality sensor (not shown).

If the water area to be withdrawn is contaminated with microorganisms,
Disinfection with ultraviolet light, chlorine-based disinfectant, or ozone may be performed before introduction into breeding water.

[Problem to be Solved by the Invention] Since the conventional breeding apparatus is configured as described above, there are the following problems, and stable production cannot be often performed. That is, when there is no disinfection means, there is always a risk that a disease occurs and the production amount becomes zero. However, the above-described UV disinfection has a problem in terms of stability due to the problems of lamp life, lamp surface contamination, and UV transmittance. In addition, since the disinfection with a chlorine-based drug has residual toxicity, the dose is limited, and in particular, no sufficient effect was observed on breeding low resistance subjects such as larvae and larvae. In addition, ozonation, if the target is seawater,
There was a similar problem with chlorine as harmful residual products were formed. In any case, in the prior art, the breeding water in the breeding aquarium was not sufficiently disinfected, and there was always a risk of fish becoming infected with the disease.

The present invention has been made in order to solve the above-mentioned problems, and water purification and sterilization are surely performed, and an excessive sterilizing agent does not flow into a breeding aquarium, and stable production can be achieved. A breeding device that can be provided.

[Means for Solving the Problems] A breeding apparatus according to the present invention includes a filtration device that takes in and raises breeding water, filters the filtered water with ozone, and then purifies the ozonized water with activated carbon, and breeding. A main flow path composed of an aquarium, in which the breeding water flows in the order of the filtration device, the purification device, and the breeding aquarium, and a part of the ozonated water is branched, and the main flow does not pass through the activated carbon device. And a flow path coupled to the path.

[Action] In the breeding apparatus according to the present invention, the filtered water that has been withdrawn is first treated with ozone, where it reacts with dissolved components to remove and disinfect polluting components. When the service water is seawater, bromine ions contained in the seawater react with ozone, and at the same time, oxidative products having persistence are generated. It has a disinfecting effect and is toxic to fish and the like. This ozonated water is subsequently treated with activated carbon to remove residual toxic substances including ozone and to remove pollutants,
Introduced into breeding aquarium. In some cases, the activated carbon-treated water separates and mixes microorganisms propagated on the activated carbon. In order to remove the microorganisms, a part of the ozone-treated water is mixed with the activated carbon-treated water in addition to the above purification flow. Since the quality of the activated carbon treated water is improved, it is disinfected by adding a small amount of disinfectant.

[Embodiment] Hereinafter, a breeding apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram showing a flow of a breeding apparatus according to an embodiment of the present invention. In the figure, (1) is a filtration device,
(2) a filtered water storage tank, (3) a water intake pump, (4) a filtered water supply pump, (5) a breeding water tank, (6) a discharge port, (7) an ozone treatment device, (8) Is activated carbon equipment,
(9) is a supply pump, and (10) is a branch valve.

The filtered water in the filtered water storage tank (2) is sent to the ozonation device (7) by the filtered water supply pump (4), where it is ozone treated. The ozonated water is distributed to the main flow path introduced into the activated carbon device (8) via the branch valve (10) and to the flow path introduced to the suction side of the supply pump (9) at its outlet, bypassing the main flow path. Is done. The ozonated water distributed to the activated carbon unit (8) is there where residual oxidizing products and other pollutants are removed. The circulating water that has bypassed the activated carbon device (8) contains residual oxidizing products, but since it has a disinfecting action, by mixing with activated carbon treated water, the entire amount of filtered water is disinfected, and the supply pump (9) It is introduced into the breeding aquarium (5). As a matter of course, before this, the water in the water tank must be discharged from the discharge port (6) in a predetermined amount. The amount of branching is determined by the concentration of residual ozone and / or oxidizing products in the ozonated water,
All these concentrations in the mixed water are set below the toxic limit. The above process is continued during the period when the water is supplied to the breeding aquarium.

With the treatment flow as described above, microorganisms flowing out of the activated carbon treated water can be disinfected by adding residual oxidizing products that do not cause a problem for the breeding target.

[Effects of the Invention] As described above, according to the present invention, the breeding apparatus is configured by the filtering apparatus, the ozone treatment of the filtered water, and then the purification apparatus for treating the ozonized water with activated carbon, and the breeding aquarium. The main flow path in which the water flows in the order of the filtration device, the purification device, and the breeding aquarium, and a part of the ozonized water is branched, and the flow path is coupled to the main flow path without passing through the activated carbon device. As a result, the concentration of microorganisms in the breeding aquarium can be maintained at a low level, the probability of disease occurrence can be reduced, and excess bactericides do not flow into the breeding aquarium. There is an effect that can be bred.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a breeding device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram showing a conventional breeding device. In the figure, (1) is a filtration device, (5) is a breeding aquarium,
(10) is a branch valve. In the drawings, the same reference numerals indicate the same or corresponding parts.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiko Sasaki 1-1-2, Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Pref. Mitsubishi Electric Corporation Control Company (72) Inventor Shigeki Nakayama 8 Tsukaguchi-Honmachi, Amagasaki-shi, Hyogo Chome 1-1, Central Research Laboratory of Mitsubishi Electric Corporation

Claims (1)

(57) [Claims] 1. A filtration device for taking and filtering breeding water, a purifying device for subjecting the filtered water to ozone treatment, and then treating the ozonized water with activated carbon, and a breeding aquarium, wherein the breeding water is filtered by the filtration device. A breeding apparatus comprising: a main flow path that circulates in the order of the purification device and the breeding aquarium; and a flow path in which a part of the ozonized water is branched and coupled to the main flow path without passing through the activated carbon device. .