JPH0731327A - Device for raising aquarium fish - Google Patents

Abstract

PURPOSE:To prevent occurrence of algae on the surface of a wall, eliminate algae and sterilize without affecting to aquarium fishes by using ozone. CONSTITUTION:Raising water is sent form a rearing tank 13 by a circulating pump 19 and supplied to a raising water treating part 16. An zone gas produced by an ozone producing part 12 is fed to the raising water treating part 16 to supply the ozone gas to the raising water. The raising water exposed to ozone is fed to an ozone discharging column 22 using honeycomb type active carbon to decompose the ozone and adsorb oxidants. The cleaned raising water is returned to the rearing tank 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to breeding of ornamental fish which prevents the formation of algae mainly on the wall surface in the breeding tank for breeding ornamental fish, removes algae and sterilizes the breeding water in the breeding tank. Regarding the device.

[0002]

2. Description of the Related Art There are many kinds of ornamental fish such as goldfish, freshwater tropical fish (so-called tropical fish), and seawater tropical fish (so-called saltwater fish). Of these, green algae often appear on the wall of the breeding tank in the case of goldfish and tropical fish breeding in fresh water.

Especially when breeding at a window near a sunny place,
The occurrence of algae is significant. Since the rearing tank for rearing the ornamental fish is still required to be clean, frequent cleaning was required to remove algae. Also, among the freshwater tropical fish,
There are species such as pre-cost masses that have a sucker-like head and feed on algae that adhere to the wall surface, and there are cases where algae are removed by breeding them.

Further, in recent years, there has been developed a device for aerating ozone gas together with air to breeding water in a breeding tank to purify the quality of the breeding water. Ozone aeration emphasizes its effects such as sterilization / deodorization, decomposition of organic and inorganic substances, decomposition of ammonia from excrement, and activation of aerobic bacteria. The purification of the breeding tank by ozone aeration is shown in FIG. Air is sent to the ozone generator 12 by the air pump 11.
The ozone generating unit 12 has a built-in ozone generating electrode (not shown) in which a discharge electrode is arranged on one surface of an alumina-based ceramic dielectric and an induction electrode is arranged on the opposite surface, and ozone is generated by silent discharge. It Ozone generator 1
The ozone gas generated in 2 is the air diffuser 1 in the breeding tank 13.
It is radiated into the breeding water via 4 and the breeding water is aerated to ozone gas. The same structure is used for breeding tanks for both freshwater and seawater.

[0005]

The manual cleaning is troublesome, and frequent cleaning is required to maintain transparency, which is a burden on the breeder. Furthermore, cleaning corresponds to a drastic change in the environment for the fish to be watched, and depending on the kind of fish to watch, it may cause damage. Further, since the precost mass is a freshwater tropical fish, the algae removal by this is limited to the case of the freshwater tropical fish, and the precost mass is not cheap. In addition, it was not a visually pleasing type of fish, and it was difficult to say that it was suitable in terms of aesthetics.

When the breeding water is treated with ozone to purify the water quality in the breeding tank, ozone has a strong bactericidal action, but toxicity to fish must be taken into consideration. Especially in seawater, there are trace components such as bromine ions, and ozone that reacts with them becomes an oxidant and remains in the breeding tank to a considerable extent and exhibits fish toxicity. In the experiment example in the aquaculture field,
It has been pointed out that the ozone concentration in the breeding tank is preferably 0.003 mg / l or less, and it is necessary to consider this point for appreciation fish. From such a point of view, it cannot be denied that the method of merely aeration of ozone gas to the breeding tank as shown in FIG.
Furthermore, the ammonia contained in the excrement of the ornamental fish cannot be decomposed by ozone alone.

The object of the present invention is to solve these problems,
Regardless of the type of watched fish, it is possible to prevent algae from growing in the breeding tank, especially on the wall surface, perform algae removal and sterilization, and provide a safe watched fish breeding device for watched fish. is there.

[0008]

According to the present invention, the breeding water from the breeding tank is supplied to the breeding water treatment means, the ozone gas is supplied from the ozone generating means to the breeding water treatment means, and the breeding water is subjected to the ozone treatment. Then, the ozone-treated breeding water is supplied to the ozone removing treatment means to reduce the ozone, and the ozone-depleted breeding water is returned to the breeding tank.

[0009]

FIG. 1 shows an embodiment of the present invention, in which parts corresponding to those in FIG. 3 are designated by the same reference numerals. In this example, the present invention is applied to an apparatus for raising ornamental fish inhabiting seawater. is there. In the present invention, the breeding water 15 in the breeding tank 13 is taken out and supplied to the breeding water treatment unit 16.
Ozone gas generated in the ozone generation unit 12 is also supplied to the ozone generator 6, and the breeding water is aerated to ozone. In the figure, the breeding water is drawn out from the pipe 17 inserted into the breeding tank 13 through the filter 18 by the circulation pump 19 and the breeding water treatment unit 16
Is supplied in. Ozone gas generated from the ozone generation unit 12 is supplied to the breeding water in the breeding water treatment unit 16 via the air diffuser 21 arranged in the breeding water treatment unit 16, and the breeding water is aerated to the ozone gas. . The ozone concentration in this breeding water is, for example, 0.1 to 1.0 mg / l, and bacteria that promote the formation of algae present in the breeding water (Pseudomonas:
Vibrio bacteria) and other bacteria are inactivated by ozone gas, and the ozone gas purifies and deodorizes and purifies breeding water.

The breeding water subjected to ozone treatment in the breeding water treatment section 16 is supplied through a pipe 20 to an exhaust ozone column 22 as an ozone removing treatment means, ozone in the breeding water is reduced and returned to the breeding tank 13 through a pipe 23. Be done. In this example, the honeycomb type activated carbon is used for the exhaust ozone column 22, and the ozone decomposition reaction is caused by the catalytic reaction, and the activated carbon reacts with ozone in the breeding water to form carbon dioxide and oxygen.
Ozone concentration is 0.003mg / l, which is harmless to the growth of ornamental fish
It is considered as follows. The activated ozone exhaust ozone column 22 also adsorbs an intermediate product produced by reacting an organic component in the breeding water with ozone in the breeding water treatment unit 16. The residual oxidant generated by the reaction between bromine contained in seawater and ozone is also included in the activated carbon exhaust ozone column 22.
Are adsorbed and removed by.

If the surplus ozone used for aeration in the breeding water treatment section 16 is directly discharged into a room or the like, it may adversely affect the human body. Therefore, ozone is decomposed and discharged in the exhaust ozone column 24. Honeycomb type activated carbon is used for the exhaust ozone column 24 in this example. In the exhaust ozone column 24, an ozone decomposition reaction occurs by a catalytic reaction,
Carbon of activated carbon and ozone react with each other to generate carbon dioxide and oxygen. In addition to activated carbon, an inorganic adsorbent such as zeolite or a noble metal catalyst may be used as a material to be subjected to ozone decomposition in the exhaust ozone column 24. Further, a thermal decomposition method or the like can be applied as another exhaust ozone method.

In this example, air is supplied from the air pump 25 to the air diffuser 14 in the breeding tank 13 through the pipe 26 to supply the air to the breeding water 15. Although not shown in FIG. 3, the ozone generating power source 27 converts the commercial power source power into high frequency high voltage power and supplies it to the ozone generating unit 12. FIG. 2 shows an embodiment in which the present invention is applied to a breeding apparatus for freshwater appreciation fish, and the portions corresponding to those in FIG. 1 are designated by the same reference numerals. In this embodiment, the breeding water that has been subjected to ozone treatment in the breeding water treatment section 16 is passed through the pipe 20,
It is supplied to the air aeration tank 31 as ozone removal processing means. To the air diffuser 32 in the air aeration tank 31, the air pump 33
Is supplied to the breeding water in the air aeration tank 31 by supplying air from the pipe 34 to the breeding water, the breeding water is aerated with the air, and ozone in the breeding water is released by the aeration.
The discharged ozone gas is decomposed by the exhaust ozone column 35 similarly to the exhaust ozone column 24 so as not to affect the human body and then discharged.

Fresh water treatment may also be carried out by the apparatus shown in FIG. However, fresh water has less components such as bromine than seawater, and it is not necessary to consider oxidant generation. Further, the ozone concentration in the breeding water treatment unit 16 is lower than that in seawater, for example, 0.01 to 0.1 mg / l. Therefore, the configuration shown in FIG. 2 can be adopted. Figure 1,
In FIG. 2, the circulation of the breeding water pump 19 may be continuous or intermittent. Aeration of the breeding water in the breeding water treatment unit 16 with ozone gas may also be performed intermittently. The ozone concentration is higher when intermittently performed than when continuously performed.

[0014]

As described above, according to the present invention, it is possible to effectively prevent the generation of algae, remove algae, and sterilize the algae in the fish tank for raising fish, which has been a problem until now. The burden can be significantly reduced. Moreover, since ozone gas is not aerated directly to the breeding water in the breeding tank, it does not adversely affect the growth of the ornamental fish.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment in which the present invention is applied to a breeding apparatus for seawater appreciation fish.

FIG. 2 is a view showing an embodiment in which the present invention is applied to a freshwater appreciation fish breeding apparatus.

FIG. 3 is a view showing a conventional ornamental fish breeding apparatus using ozone aeration.

Claims (1)

[Claims] 1. A breeding water treatment means for supplying ozone from the ozone generation means and breeding water from a breeding tank, and supplying ozone from the ozone generation means to the breeding water, and an ozone treatment from the breeding water treatment means. An ornamental fish breeding apparatus comprising: ozone-removing treatment means that is supplied with the raised breeding water and returns the ozone to the above-mentioned breeding tank after being treated to reduce its ozone.