JPH04166281A - Water purifying device - Google Patents

Abstract

PURPOSE:To prevent the adherence of algae to the surface of the wall of a water tank by maintaining stabilized concentration of free chlorine continuously with a free chlorine generator. CONSTITUTION:In the forced circulation flow pathes 3a, 3b, the water in a water tank 2 is circulated by a pump. To this forced circulation flowing path, a water purification module 9 composed of minerals 8 (e.g. zeolite) provided with an air supplying means 10 on a preceding flow, a water temp. control module 7 composed of a heater 5 and the temp. controller 6, and a sterilization module 12 using a UV lamp 11 and a free chlorine generator 14 are disposed. Namely, in the free chlorine generator 14 continuously stabilized concentration of free chlorine is maintained by the electrolysis of salt water, the algae generated in the water tank are decomposed and eliminated, thereby increasing merchandise value as the algae free water tank for pet fish.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water purification device for purifying water in an aquarium in which ornamental fish are kept.

Conventional technology For example, in the case of an aquarium for aquarium fish, the water in the tank does not have an extremely harmful effect on the fish due to the metabolic effects of the fish, uneaten food, excrement, etc., and the generation of ammonia and dirt and the proliferation of pathogenic bacteria. There are problems such as.

In order to partially solve these problems, for example, in the water purification apparatus shown in FIG. A nitrification module 8 has an ejector 7 that sends air into the flow, fills the inside with minerals, and cultivates aerobic microorganisms, and a sterilization module 10 that uses an ultraviolet lamp 9 inside.
Water is purified and sterilized by forced circulation inside the tank.

Note that 11 is a water tank, a pump, and a vibrator that connects each module.

In the above water purification device, first, ammonia generated from fish metabolism, uneaten food, and organic matter such as excrement is converted into nitrifying bacteria (ammonia It is broken down into nitrates, which are harmless to fish, by oxidizing bacteria and nitrite-oxidizing bacteria, and then UV lamps are used to sterilize pathogenic bacteria in fish, but it is said that the above-mentioned dirt, especially algae that adheres to the aquarium, cannot be removed. There was a big problem.

Problems to be Solved by the Invention Since this algae adheres to the walls of the aquarium, the aquarium becomes untidy and has a fatal drawback as an aquarium for ornamental fish. The object of the present invention is to keep the wall surface of an aquarium fish tank always clean.

Means for Solving the Problems In order to solve the above problems, the present invention provides a water purification module made of a mineral material and a heater, in which an air supply means is provided upstream of a forced circulation channel for circulating water in an aquarium using a pump. A water temperature control module consisting of a temperature control device, a sterilization module using an ultraviolet lamp, and a free chlorine generator are installed, and by maintaining a continuous and stable free chlorine concentration with the aforementioned free chlorine generator, it is possible to prevent water from reaching the aquarium wall. It has a structure that has the effect of preventing algae from adhering.

Effects of the present invention With the above-described structure, oxygen is constantly supplied to ammonia and fish pathogenic bacteria, which are caused by fish metabolism, uneaten food, excrement, etc. and which have extremely harmful effects on fish. The nitrifying bacteria (ammonia oxidizing bacteria and nitrite oxidizing bacteria) growing on the surface of the mineral materials in the water purification module decomposes it into nitrate, which is harmless to fish, and then uses an ultraviolet lamp to kill pathogenic bacteria in fish. This allows you to put fish in an aquarium and raise them from the beginning. Furthermore, since the algae contained in the water are decomposed by the free chlorine that is continuously generated from the free chlorine generating device, there is no adhesion of algae to the aquarium wall surface, and a clean aquarium can be realized at all times, so that the purpose of viewing can be achieved.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. FIG. 1 shows an embodiment in which the water purification device of the present invention is applied to an aquarium fish tank. The water purification bag W1 was placed between the forced circulation channels 3a and 3b of the water in the aquarium 2. The water containing dirty ammonia, algae, fish pathogens, etc. that has accumulated at the bottom of the aquarium 2 is passed through a water flow path (outward path) 3a to a pump 4 and then to a heater 5.
and a water temperature control module 7 consisting of a temperature control device 6, where it is heated to a predetermined temperature. Furthermore, the dirty water containing ammonia and the like is treated with a water purification module 9 filled with mineral T8 on which nitrifying bacteria grow.
to go into. On the other hand, an ejector 10 is installed at the inlet of the water purification module 9, which sucks air by an ejector effect and supplies oxygen in the air to the water purification module 9. Due to this oxygen, the oxidative decomposition of the ammonia is promoted by the nitrifying bacteria attached to the surface of the mineral substance 8, and it becomes nitrate, which is harmless to fish, according to the following formula.

NH4”+1.50x =NOx-+HzO+H”+
＋＋＋■NOz−+0.50 t→NOs・・
・・・・・・・・・・・・・・・・・・・・・・・・ 0 Next, pathogenic bacteria on the fish are sterilized using the sterilization module 12 in which the ultraviolet lamp 11 is placed, and then connected to a DC power source. Electrode 1
The algae contained in the water are decomposed and removed by a free chlorine generating device 14 into which 3 is inserted.

In this way, ammonia, fish pathogens, algae, etc. generated in the aquarium are decomposed and removed, resulting in clean water that returns to the aquarium 2 via the water flow path (return path) 3b.

On the other hand, if the amount of oxygen sucked in from the ejector 104 mentioned above is greater than the amount required for the oxidative decomposition of ammonia mentioned above, the water containing a large amount of oxygen will return to the aquarium 2, so that it can be used like a conventional aquarium. By installing an air diffuser, you don't have to use an air pump all the time. Furthermore, the aforementioned mineral substance 8 includes zeolite, dolomite, kaolinite,
They are made from hentonite, pottery stone, limestone, magnesite, magnesia, magnesium silicate, diatomaceous earth, shellfish, etc., and are used by filling containers such as bags. In one embodiment of the present invention, saddle rock type ceramics made from blast furnace granulation was used as the mineral material 8.

This blast furnace granulation is produced from blast furnaces at steel plants at a rate of 0 per ton of molten iron.
．． It is manufactured by rapidly cooling 5 tons of slag, and is mainly used as a raw material for cement and as a soil improvement material. Granulated blast furnace is a porous glass material whose main components are CaO, SiO2, and AIzOx, as shown in Table 1, and also contains MgO and FeO.

As described above, since CaO is the main constituent, even if H' is generated in the above-mentioned reaction formula (2), the pH does not decrease.

Table 1 Composition (%) of blast furnace granulated water In addition, on the surface of the mineral substance 6 whose main component is CaO, there are many divalent positive ions such as calcium in the water, and the bacterial population generally becomes negative. Because it is electrically charged, it is a substance to which bacteria can easily adhere, making it ideal as a fixed bed for artificially cultured bacteria.

Next, a forced circulation channel for circulating the water in the aquarium fish tank, a water temperature control module 7 provided in this forced circulation channel, a water purification module 9 made of mineral substance 8, and a sterilization module equipped with an ultraviolet lamp 11 are installed. 12. Electrode 1 for electrolyzing seawater
The effectiveness of a water purification device equipped with a free chlorine generator 14 (with reference numeral 3) and an ejector-type oxygen supply means provided upstream of the water purification module 9 was determined in the following experiment.

The aquarium fish tank used in the experiment was made of acrylic resin and had an internal volume of 1,001 mm, making it easy to remove all the dirt that had collected at the bottom of the tank. In addition, the water temperature of the water tank is controlled by the heater 5 of the water temperature control module 7 and the temperature control device 6 to 27±1.
I tried to keep it at 'C. Furthermore, the water purification module 9 used in the water purification device 1 is a cylindrical one made of acrylic resin and has an internal volume of 31 mm. It was used as a fixed bed of oxidizing bacteria. In addition, air was supplied at 142/min by an ejector 10 installed at the inlet. The amount of oxygen in the air is determined by the amount of mineral matter 8 in the water purification module 9.
This is the mass-market supply amount necessary for ammonia-oxidizing bacteria attached to the surface to oxidize and decompose ammonia.
The amount of dissolved oxygen in the water that has passed through the water purification mosiel 9 is in a saturated state. Therefore, like in a conventional aquarium, an aeration tube is placed in the aquarium and the water in the aquarium is pumped with an air pump. The product of transit time and UV irradiance is 10'μwse
c/ci. Next, in the free chlorine generator 14, a current of 7.5 mA was applied to the electrode 13 from the DC power supply, and chlorine was generated for 8 hours a day at a rate of about 0.06 g/h.

The above water purification device is attached to the forced circulation flow path of the aquarium fish tank as shown in Fig.
Add 20 tropical fish and use a forced circulation pump to increase the water in the tank by 4.
We measured the state of algae that grew on the walls of the aquarium when the fish were kept in circulation at β/min, and also measured the number of nitrifying bacteria involved in water purification. The results are shown in Tables 2 and 3.

Table 2 shows the results of measuring the state of algae growth in breeding tank A in which the free chlorine generating device of the present invention was used as a water purification device and breeding tank B in the control area. If the free chlorine generator of the present invention is not used, spotted green algae will grow within one month of raising fish, and after three months, green algae will grow on all the walls of the aquarium, making it difficult to see inside the tank. . On the other hand, ornamental fish breeding aquarium A using the free chlorine generator of the present invention did not have any algae growth even after one year of fish breeding, confirming its effectiveness and demonstrating its commercial value as an aquarium for ornamental fish. I was able to increase it. Moreover, since no change was observed in fish at the above-mentioned amount of free chlorine generated, it is optimal for an aquarium for ornamental fish.

Table 2 Status of algae growth on the aquarium wall surface Table 3 shows the results of an investigation into the influence of the free chlorine generator of the present invention on the seawater in breeding aquarium A and the nitrifying bacteria of the minerals in the water purification module.

Even when the free chlorine generator of the present invention was used, no significant difference was observed between control group B and the number of nitrifying bacteria in the rearing water and mineral materials.

Table 3 Number of Nitrifying Bacteria in Breeding Water and Mineral Materials As mentioned earlier, the key to water purification in aquarium fish tanks is the oxidative decomposition of ammonia based on the biochemical activity of nitrifying bacteria. I was very worried about whether the addition of free chlorine to seawater would actually inhibit the growth of nitrifying bacteria, but as long as the free chlorine concentration does not affect the growth of the fish of the present invention, it will be possible. I was able to confirm that there was no interference.

Effects of the Invention (1) As mentioned above, the present invention is a water purification device that uses a free chlorine generator that can maintain a stable free chlorine concentration extremely easily and continuously through electrolysis of seawater. Algae generated in the aquarium can be decomposed and removed, increasing the commercial value of an aquarium for ornamental fish that is free of algae.

(2) Even if free chlorine is added to seawater for breeding ornamental fish, if the added amount is the amount of the present invention, it will hardly inhibit fish or nitrifying bacteria that decompose ammonia in water.

(3) The water purification device of the present invention uses Ail, a water purifier gel.
By equipping the stream with an oxygen supply means by ejector effect and supplying more oxygen than the acid salt used in the water purification module, excess oxygen can be introduced into the aquarium. It is no longer necessary to put an aeration pipe in the aquarium and constantly use an air pump to supply air.

(4) Furthermore, since the water purification device of the present invention uses saddle-type ceramic porcelain produced by blast furnace granulation that contains a large amount of CaO, even if ammonia in the water is decomposed and acid is generated, the PH
does not shift to the acidic side, so there is no need to neutralize by adding alkali as in the past.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a water purification device according to an embodiment of the present invention applied to an aquarium fish tank, and FIG. 2 is a conventional block diagram. 1...Water purification device, 2...Aquarium, 3a
, 3b... Circulation channel, 5... Heater, 8... Mineral material, 10... Ejector-111... Ultraviolet lamp, 14...
Free chlorine generator.

Claims (3)

[Claims] (1) A forced circulation channel that circulates water in the aquarium with a pump,
In this forced circulation channel, a water purification module made of mineral material with an air supply means provided upstream, a water temperature control module consisting of a heater and temperature control device, a sterilization module using an ultraviolet lamp, and a free chlorine generator are installed. water purification equipment. (2) The water purification device according to claim 1, wherein the free chlorine generating device comprises a device that generates free chlorine by electrolysis of seawater. (3) Mineral materials are CaO, SiO_2, Al_2O_3,
The water purification device according to claim 1, wherein the main components are MgO and FeO.