JPH089831A - Purification of wafer in water tank - Google Patents

Abstract

PURPOSE:To prevent generation of ammonia in water by efficiently supplying oxygen to water in a water tank. CONSTITUTION:A filter 4 equipped with a receiving unit 3 having many holes 4 for allowing water to pass through is attached to the inside bottom of a water tank 1 and a filter medium 5 is put on the receiving unit 3 to form a filter layer 6. Water in that water tank 1 or another water tank is mixed with air and sent to a space under the filter layer 6. In the used filter 4, the receiving unit 3 is composed of two or more vertically separated steps and the filter medium 5 is put on each step of the receiving unit 3 to form the filter layers 6 composed of two or more layers. Water in the water tank 1 or another water tank is mixed with air and sent to a space under the filter layers 6. The receiving unit 3 of the filter 4 is designed so as to be inclined upward in the direction where air and water are sent to a space under the filter layer 6.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a breeding tank for raising ornamental fish, edible fish, etc., a filtration tank for filtering water in the breeding tank,
The present invention relates to a water purification method for purifying water in a water tank such as a water tank that supplies water to a water tank for storing cultured fish or display fish. Is the way to do so.

[0002]

2. Description of the Related Art FIG. 4 shows a water tank in which a conventional water purification device is installed. A plastic filter D having a large number of slits C formed on the upper surface B is laid on the bottom of the water tank A, and river gravel or the like is covered on the plastic filter D. A pipe F is erected at one corner of the upper surface of the filter D so as to communicate with the rear surface side of the filter D, and an air supply hose G connected to an air pump (not shown) is inserted inside the pipe F. ing. In this water tank A, when an external air pump is operated to blow out air from the lower end H of the air supply hose G, the water in the water tank A passes through the filter layer I such as river gravel as shown by the arrow in the figure. Then, it flows into the back side of the filter D, further flows through the pipe F to the upper part in the water tank A, and is circulated. in this case,
Garbage, fish food, dung, etc., contained in the water in the aquarium A are filtered by the filter layer I and the filter D, and oxygen is supplied to the water flowing therein from the air bubbles rising in the pipe F to be purified. Water from the upper discharge port J of the pipe F to the water tank A
Returned inside.

[0003]

However, in the conventional water purification method, the air and the purified water are returned from the upper discharge port J of the pipe F to the upper part of the water tank A, so that the air flows out upward as it is. It does not get enough air into the water. Therefore, sufficient oxygen could not be supplied to the water in the water tank A. Therefore, bacteria that eat ammonia, which is generated by the decay of fish feed and dung, cannot live,
When the concentration of ammonia in the water tank A increases and the amount of ammonia increases, the water rots, sludge is generated, and finally hydrogen sulfide is generated, resulting in oxygen starvation of the fish. In the past, in order to prevent this, the water in the water tank A had to be frequently replaced.

An object of the present invention is to provide a water purification method for a water tank which can efficiently supply oxygen to the water in the water tank and suppress the generation of ammonia in the water.

[0005]

The method for purifying water in a water tank according to claim 1 of the present invention is, as shown in FIGS. 1 to 3, a receiving portion 3 having a large number of water passage holes 2 in the bottom of the water tank 1. The filter 4 having the filter formed therein is installed, and the receiving portion 3 is covered with the filter material 5 to cover the filter layer 6
Is formed, and the water in the same water tank 1 or in another water tank is mixed with air and sent under the filter layer 6.

In the method for purifying water in a water tank according to a second aspect of the present invention, as the filter 4, one having the receiving portions 3 vertically separated from each other is used, and the filtering material 5 is provided in each receiving portion 3. 2 or more layers of the filtration layer 6 are formed so as to cover the above, and the water in the water tank 1 or in another water tank is mixed with air and sent under the lower filtration layer 6.

In the method for purifying water in a water tank according to a third aspect of the present invention, the receiving portion 3 of the filter 4 is formed in an upward slope along the feeding direction of air and water below the filter layer 6. It is characterized by that.

[0008]

In the method for purifying water in the aquarium according to claim 1 of the present invention, a filter 4 having a receiving part 3 having a large number of water passage holes 2 formed at the bottom of the aquarium 1 is installed, and the receiving part 3 is provided. Since the filter material 5 is covered with the filter material 5 to form the filter layer 6 and the water in the same tank 1 or another tank is mixed with air and sent under the filter layer 6, the water passes through the filter layer 6. The air rises from the upper surface of the filtration layer 6, and while forming an air layer on the lower surface of the filtration layer 6, a part thereof passes through the filtration layer 6 and is blown up from the upper surface of the filtration layer 6. The water passing through the filtration layer 6 is
Is filtered to be clean water, and the air layer staying below the filter layer 6 and the air bubbles blown from the entire surface of the filter layer 6 supply a large amount of oxygen to the water in the water tank 1. Increase the dissolved oxygen content of water. As a result, bacteria that require a large amount of oxygen can attach to the filter layer 6 of coral sand or river gravel and be actively activated, and the activity of the bacteria can reduce the concentration of ammonia in water. it can.

In the method for purifying water in the aquarium according to the second aspect of the present invention, since there are two or more filtration layers 6, the water is more completely filtered, and an air layer is formed on each filtration layer 6. As a result, it becomes possible to retain air for a longer time in the water, and to supply a large amount of oxygen to the water.

In the water purification method for the water tank according to the third aspect of the present invention, since the receiving portion 3 of the filter 4 is formed in an upward slope along the air and water feeding direction below the filter layer 6. Thus, the air sent under the filter layer 6 can be spread over the entire filter layer 6 without staying on the sending part side. As a result, air is efficiently dispersed, and a large amount of oxygen can be supplied to water.

[0011]

Embodiment 1 FIGS. 1 and 2 show an embodiment of a method for purifying water in a water tank according to the present invention. A specific example of an apparatus for carrying out this purification method will be described below. Square frame 1 using a plate material 11 having a large number of through holes (water holes) 2 formed on its surface
2 is produced. There is a hole 1 in the lower part of the side surface of the frame body 12.
Open 0 and insert a pipe 14 into this hole 10 to fix it. Further, on the inner surface of the frame body 12, support portions 13 for mounting the plate member 12 having a large number of through holes 2 formed thereon are formed in two stages, one above the other. At this time, the first stage (lower stage) supporting portion 13 is the plate member 1
1 is manufactured so that it can be mounted horizontally, and the second-stage (upper) support portion 13 is manufactured so that the plate material 11 can be mounted with a slight inclination as shown in FIG. Then, the plate member 11 is made to be inclined upward along the air and water feeding direction by the pipe 14.

The plate member 11 having the through holes 2 is set on the first-stage support portion 13 of the frame body 12 and the receiving portion 3 for the filter medium 5 is set.
Is formed, and a filter medium 5 such as river gravel or coral sand is laid flat on it to form a first-stage filter layer 6. At this time, the filtration layer 6
A gap is formed between the upper surface of the plate and the plate member 11 placed on the second stage. Then, the second plate member 11 is set on the second supporting portion 13 of the frame body 12 to form the receiving portion 3 of the filter medium 5, and the filter medium 5 such as river gravel or coral sand 5 is formed on the plate member 11. Are laid flat to form the second filtration layer 6.

The filter 4 manufactured in this way
2 is set in the water tank 1 and is attached to the pipe 14 of the filter 4 shown in FIG.
The water delivery pipe 15 of the water pump 9 shown in FIG. 3 and the air delivery hose 16 of the air pump 8 shown in FIG. Then, river gravel, coral sand or the like is laid in the gap between the filter 4 and the aquarium 1, and the filter 4 is covered with the river gravel, coral sand or the like.

Further, the water suction pipe 19 of the water pump 9 is inserted into the water tank 1, and a strainer 18 is attached to the tip of the water pipe 19 so as not to absorb dust and the like.

After that, water is put in the water tank 1 and the water pump 9
And the air pump 8 are moved. Then, the water in the water tank 1 is sucked from the strainer 18, and the water suction pipe 1
9, the water pump 9, and the water delivery pipe 15 are sent to the pipe 14 of the filter 4, and the air and the water sent from the air delivery hose 16 are mixed there and sent to the inside of the filter 4. This water and air are filtered by the lower filter layer 6 of the filter 4.
Spreads over the entire bottom surface, passes through the filter layer 6 and the upper filter layer 6, and is returned to the water tank 1. At this time, a part of the air that cannot escape through the filter layer 6 at a stretch stays below the filter layer 6 to form an air layer, and a large amount of oxygen is supplied to the water there. Air bubbles blown from the entire surface of the filtration layer 6 supply oxygen to the water in the water tank 1. Further, since air is directly supplied to the filter layer 6 of river gravel and coral sand, a large amount of ammonia-eating bacteria can inhabit here. As a result, the amount of dissolved oxygen in the water in the water tank 1 increases,
Also, ammonia is digested by bacteria and reduced,
A very good water quality environment will be created for fish breeding. Further, since a large amount of ammonia is not accumulated, water spoilage, sludge generation, and hydrogen sulfide generation are suppressed, and the number of times of water exchange can be reduced.

[0016]

[Embodiment 2] In the water purification method of the present invention, the two-stage filter 4 manufactured in Embodiment 1 is installed in a filter tank 20 separately provided outside the water tank 1 as shown in FIG. You may perform purification. In this case, the water suction pipe 19 is inserted into the water tank 1, the water is pumped up by the water pump 9 and sent to the filter 4 in the filter tank 20, and the air from the air pump 8 is sent to the filter 4 by the air delivery hose 16. Aquarium 1 by sending it to
The water inside is purified by the filter tank 20, oxygen is supplied, and this water is sent back from the filter tank 20 into the water tank 1 through the pipe 21.

In this case, the plastic filter D shown in FIG. 4 is installed in the water tank 1, and while filtering the water in the water tank 1 with this filter D, the water in the filter D is pumped up by the water pump 9. The water may be purified by sending it to the filter 4 of the filtration tank 20.

Although the embodiment described above is an example in which the filter layer 6 has a two-stage structure, the filter layer 6 may have a one-stage structure or three or more stages.

[0019]

According to the method for purifying water in the aquarium of the present invention, the following effects can be obtained. ． Since a lot of oxygen is supplied to the water, it is possible to create a good water quality environment for raising fish. ． A large amount of oxygen is supplied to the water, which makes it easier for bacteria that eat ammonia to live, and as a result, the concentration of ammonia in the water decreases. ． As the ammonia concentration in the water decreases, water rot,
The generation of sludge is suppressed or eliminated. ． As a result, it is possible to create a favorable water quality environment for raising fish. ． Further, the number of times of water exchange can be reduced, and maintenance of the aquarium 1 becomes easy. ． When the activity of seaweed becomes active, a large amount of oxygen is supplied to water by photosynthesis.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a water purification method for an aquarium of the present invention.

FIG. 2 is a sectional view of the water tank of FIG.

FIG. 3 is a cross-sectional view showing another embodiment of the water purification method for an aquarium of the present invention.

FIG. 4 is a perspective view showing an example of a conventional water tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water tank 2 Water passage hole 3 Receiving part 4 Filter 5 Filter material 6 Filter layer

Claims (3)

[Claims] 1. A large number of water holes (2) at the bottom of the water tank (1).
In the water tank (1), a filter (4) having a receiving part (3) having a filter is installed, and the receiving part (3) is covered with a filter material (5) to form a filter layer (6). Alternatively, a method for purifying water in a water tank is characterized in that the water in another water tank is mixed with air and sent under the filter layer (6). 2. The filter (4), wherein the receiving part (3) is vertically separated and formed in two or more steps, and each receiving part (3) is covered with a filtering material (5). The two or more layers of (6) are formed, and the water in the water tank (1) or the water in another water tank is mixed with air and sent under the lower filtration layer (6). Water purification method for aquarium. 3. The receiving part (3) of the filter (4) is formed so as to be upwardly inclined along the direction of sending air and water below the filter layer (6). The water purification method for an aquarium according to claim 1 or claim 2.