JP3785530B2 - Water treatment method for sea animals tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water treatment method for a marine animal breeding tank in an aquarium or the like.
[0002]
[Prior art]
At the aquarium, water quality management is focused on the water quality from the growth environment of the breeding organisms and the water quality (transparency) seen from the audience. However, with the trend toward larger tanks in recent years, the transparency of water quality has increased. Improvement is very demanding. The main causes of lowering the transparency include an increase in turbidity due to suspended suspensions such as residual food and excrement, and an increase in chromaticity due to dissolution of excrement or decomposition products thereof.
[0003]
Therefore, in order to increase the transparency of the water quality, the suspended suspension is mainly removed by a sand filtration device, fine particles that cannot be removed by sand filtration are removed by a foam separation device, and the excrement or decomposition products thereof are dissolved. Yellowish brown coloration on water is reduced by ozone treatment.
[0004]
[Problems to be solved by the invention]
In the conventional seawater tank water treatment method described above, in marine animals, turbidity of breeding water derived from excrement peculiar to marine animals (floating suspension, coloring in breeding water) is very high compared to fish. Because there are many, it is necessary to remove excrement promptly.
[0005]
Ozone treatment is effective for removing pigment components, but this ozone treatment has the challenge of reducing the toxicity of residual oxidants generated by the use of ozone and reducing the cost required for ozone generation. This problem has been solved by continuously supplying ozone.
[0006]
However, in the marine animal breeding tank, the tendency of the breeding water to become yellow or brown due to dissolution of the excrement specific to marine animals or its degradation products is much more pronounced than that of fish. In continuous supply, there is a problem that it is impossible to respond quickly when the turbidity rises sharply, and compared to fish, the toxicity of oxidants to sea animals is not high, but the accumulation of residual oxidants results in sea animals. There was also a problem of causing ulcers on the body surface.
[0007]
The objective of this invention is providing the water treatment method of the sea animal tank which prevents accumulation of residual oxidant and removes the excrement of sea animals rapidly.
[0008]
[Means for Solving the Problems]
The seawater aquarium water treatment method according to the present invention has a water treatment process using a foam separation device , and is a water treatment method for a sealife aquarium that performs ozone treatment by supplying ozone together with aeration air in the device, Based on the behavior pattern of sea animals and the breeding management style such as feeding / cleaning, grasp the time zone when the breeding water is significantly contaminated, set the ozone supply time with the timer, and keep the breeding water during the time when the water is noticeably dirty It is characterized by performing ozone treatment.
[0009]
Fish have almost no daily life pattern, but sea animals show a relatively constant life pattern. For example, an amphipod walrus sleeps at night on the land and enters the water at almost a fixed time in the morning. Also, feeding and cleaning times are almost constant. For example, when a marine animal enters the water field in the morning, the aquarium becomes abruptly soiled by excretions excreted at night and attached to the body surface. Also, immediately after feeding or after a while, the aquarium is filled with residual food and excreta. Increased turbidity (unit: NTU) and chromaticity (index of yellow component derived from residual food and sea animal excrement) are observed. The seawater aquarium water treatment method according to the present invention is made by paying attention to the fact that the daily life pattern of seafood is almost constant as described above. The water treatment apparatus is operated according to the pattern. By doing so, an efficient water treatment can be performed.
[0010]
The removal of the chromaticity, ozone treatment is effective, the removal of the floating suspension from excrement, foam separation device is valid.
[0011]
Also, instead of timer management, the turbidity of breeding water is constantly monitored as an indicator of the behavior pattern of sea animals, and when the turbidity exceeds the set value, aeration air is increased and ozone is supplied in the foam separation device Thus, water treatment operations such as ozone treatment can be performed automatically. Thereby, the dirt which generate | occur | produced in the water tank can be removed rapidly and efficiently.
[0012]
Furthermore, the turbidity of 24 hours of breeding water is measured the day before or before the day of water treatment, and aeration air is increased and ozone is supplied according to the time when the turbidity reaches a peak. You may do it.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
FIG. 1 shows a flow of a water treatment system of a walrus tank. This water treatment system mainly includes a mesh strainer (2) and a pressure filter (3) for removing suspended suspended matter from waste water of the water tank (1). ), A foam separator (4) that removes fine particles, excrement, dissolved organic matter, etc. that cannot be removed from the drainage of the water tank (1) by the filter (3), and a filter (3) and a foam separator ( 4) and a heat exchanger (5) for adjusting the temperature of the water returned to the water tank (1).
[0015]
The foam separation device (4) generates bubbles in the separation tank to raise the water to be treated along with the bubbles, and removes floating organic substances contained in the water to be treated as bubbles by attaching them to the bubbles. is there. A known foam separation device performs bubble generation by blowing air, but in the foam separation device of the system of the present invention, ozone is also blown into the separation tank together with aerated air.
[0016]
Figure 2 shows an example of monitoring the turbidity of a walrus tank. As a result of this monitoring, the walrus sleeps at night on the land and enters the water at almost a fixed time in the morning (around 8:00). It can be seen that the turbidity immediately after entering the field is increasing rapidly. It can also be seen that an increase in turbidity is observed after cleaning and after feeding (9 o'clock, 11 o'clock, 13:30, 16:00).
[0017]
The water treatment method of the sea animal tank according to the present invention was obtained based on the knowledge of the life pattern of sea animals such as walrus, and grasped the time zone when the breeding water was noticeably soiled, and the ozone of the breeding water at the same time zone Processing is performed.
[0018]
The ozone treatment is performed by supplying ozone to the foam separator at 7 to 8 g / h.
[0019]
FIG. 3 shows the measurement results for one day of turbidity of a walrus water tank treated by the method of the present invention. The upper line shows the turbidity at the foam separator inlet and the lower line shows the turbidity at the foam separator outlet. From this result, it can be seen that, at the outlet portion of the foam separator, the increase in turbidity associated with the walrus wake-up action is largely eliminated by the supply of ozone (O ₃ ) at 8 o'clock. And it turns out that a substantially constant low turbidity can be maintained in the exit of a foam separator by performing ozone supply 3 times after that.
[0020]
FIG. 4 shows the measurement results for one day of turbidity of the walrus water tank when ozone is not supplied. Similar to FIG. 3, the upper line shows the turbidity at the foam separator inlet, and the lower line shows the turbidity at the foam separator outlet. From this result, it can be seen that when ozone is not supplied, the increase in turbidity accompanying the wake-up action of walrus at 8 o'clock still remains in a peak state at the outlet of the foam separator. Then, it can be seen that the increase in turbidity due to subsequent feeding is higher than that with ozone supply.
[0021]
3 and 4 show that the turbidity removal rate when ozone is supplied is about 50 to 70%, and the turbidity is rapidly reduced as compared with the case where ozone is not supplied. From the relationship between the presence or absence of ozone supply and the increase in turbidity, it can be understood that the wastewater stains can be treated effectively and quickly by performing the ozone treatment only during the time zone when the breeding water is significantly soiled. Here, turbidity in the walrus aquarium is constantly monitored, and ozone may be supplied when the turbidity rises, but the behavior pattern and breeding management style of walrus are almost constant, Regular monitoring can be omitted by setting the ozone supply time as a timer based on the results measured in advance.
[0022]
5 and 6 show the measurement results for one day of turbidity in the case of a penguin water tank. FIG. 5 shows the case with ozone supply, and FIG. 6 shows the case without ozone supply. The upper line shows the turbidity at the foam separator inlet, and the lower line shows the turbidity at the foam separator outlet. Show. In the case of a penguin, although there is not a peak as remarkable as a walrus, a small mountain showing an increase in turbidity is repeated several times at the inlet of the foam separator. By supplying ozone corresponding to this pattern, foam separation is achieved. It can be seen that the apparatus outlet can maintain a substantially constant and low level of turbidity compared to the case of no ozone supply.
[0023]
In the water treatment method, it is more preferable to increase aeration air when supplying ozone. Further, ozone may be constantly supplied, and when the turbidity peak occurs, the concentration may be increased.
[0024]
【The invention's effect】
According to the water treatment method for marine aquarium tanks of the present invention, the amount of ozone used can be reduced by performing ozone treatment only during times when the breeding water is significantly contaminated, so that the toxicity and cost of residual oxidants can be reduced. This is advantageous from the point of view, and the generated dirt can be processed more quickly than in the past.
[Brief description of the drawings]
FIG. 1 is a flow chart showing a water treatment method for a sea animals tank according to the present invention.
FIG. 2 is a graph showing an example of monitoring turbidity of a walrus water tank.
FIG. 3 is a graph showing measurement results of turbidity when a water treatment method for a sea animals tank according to the present invention is carried out.
FIG. 4 is a graph showing measurement results of turbidity when a conventional seawater aquarium water treatment method is carried out.
FIG. 5 is a graph showing another example of the measurement result of turbidity when the water treatment method for sea animals tank according to the present invention is carried out.
FIG. 6 is a graph showing another example of the measurement result of turbidity when the conventional water treatment method for marine animals tanks is carried out.
[Explanation of symbols]
(1) Aquarium
(4) Foam separator

Claims (3)

A water treatment method for a sea animal tank that has a water treatment process using a foam separation device and performs ozone treatment by supplying ozone together with aeration air in the device, and includes breeding of behavior patterns and feeding / cleaning of sea animals A marine animal in an aquarium characterized by knowing when the breeding water is significantly contaminated based on the management style, setting the ozone supply time as a timer, and performing ozone treatment of the breeding water during the markedly dirty time Water treatment method for water tanks. 2. The water treatment method for a sea animals tank in an aquarium according to claim 1, wherein the turbidity of the breeding water is used as an indicator of the behavior pattern of the sea animals, and the water treatment is performed in accordance with a time zone when the turbidity increases. . The turbidity of 24 hours of breeding water is measured the day before or before the day of water treatment, and aeration air is increased and ozone is supplied according to the time when the turbidity reaches its peak. The water treatment method of the sea animals tank in the aquarium of Claim 2 .

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