JPH04131027A - Water-treating apparatus for living fish and water-treating method - Google Patents

Abstract

PURPOSE:To obtain the subject apparatus capable of storing living fish, cultured fish and fish of aquarium, etc., in living state by providing a water tank with an organism-treating tank and a bubble-separation tank in a state to balance the loads of both tanks. CONSTITUTION:Water 5 in a water tank 1 holding living fish 2 is transferred to an organism-treating tank 7 with a pump 6, the organic substances is decomposed and nitrated by microorganisms 9 attached to a filter medium 8 and the water is returned to the water tank 1 with a pump 6a. Water 5 sucked with a pump 15 is mixed with air by a bubble-generator 16, returned to a bubble-separator 17, sucked with a pump 18 and returned through a heat- exchanger 10 to the water tank 1.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a water treatment device and a water treatment method for live fish.
In particular, the present invention relates to improvements in live fish, stocked fish, and water treatment devices and water treatment methods for live fish that store fish in aquariums and the like.

(Conventional technology) Traditionally, live fish, stocked fish, and water treatment equipment for live fish that stores fish in aquariums, etc., are mainly based on biological treatment technology that uses microorganisms in the water to decompose organic matter, nitrify ammonia, etc. A fixed-bed biological treatment device in which microorganisms are attached to a filter medium is used. As shown in Figure 3, live fish 2 are stored in an aquarium 1, and a blower
3, it is ventilated by a diffuser plate 4. water tank 1 water 5
The water is supplied to a biological treatment tank 7 by a pump 6, where the microorganisms 9 adhering to the filter medium 8 perform processes such as decomposition of organic matter and nitrification. It is returned to tank 1.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional water treatment equipment for live fish, ■ Particularly in the case of saltwater fish, the microbial activity in seawater is low, and the volume and load of organic matter decomposition, nitrification, etc. are low. ,
As the volume of the biological treatment tank increases, securing space for the biological treatment equipment becomes a problem.

■ If there are fluctuations in the condition of fish or the amount of fish stored, the capacity of the biological treatment tank will be insufficient and water quality will deteriorate.

■ In order to absorb the load fluctuations mentioned in (2), it is necessary to make the biological treatment tank even larger, and a huge biological treatment device is required.

There are other problems.

The present invention focuses on the above-mentioned conventional problems, and relates to a water treatment device and water treatment method for live fish, and particularly relates to a water treatment device and water treatment method for live fish that stores live fish, stocked fish, and fish such as aquariums. The aim is to improve the method.

(Means for Solving the Problems) In order to achieve the above object, the first aspect of the present invention provides a water treatment device for live fish that stores live fish and other marine products in a tank. It consists of a storage tank, a biological treatment tank where microorganisms decompose organic matter, nitrification, etc., and a foam separation tank where organic matter in water is attached to air bubbles and discharged outside the system. In the second invention, a foam separation tank and a biological treatment tank are installed in parallel. Moreover, in the third invention, the foam separation tank and the biological treatment tank are installed in series.

Furthermore, in a fourth invention, in a water treatment device for live fish that stores live fish and other marine products in a tank, the water for storing fish and the like is treated by microorganisms to decompose organic matter, nitrify, etc. It is characterized by attaching organic matter in the water to the water and discharging it out of the system.

(For I) According to the above configuration, a foam separation tank is provided separately from the biological treatment tank, and the load on the biological treatment tank is reduced by discharging the organic matter in the water with the foam to the outside of the system before decomposing it, and The load between the two is optimally distributed.

■ Since various organic substances discharged from fish can be discharged to the outside of the threads in the foam separation tank before being decomposed by microorganisms, the load on the biological treatment tank can be reduced.

■ Organic matter excreted from the bodies of fish varies greatly depending on the conditions in which the fish are reared. At this time, if the organic matter that is occasionally discharged as SS components is immediately discharged from the system using a foam separation tank, it can be removed from the system before it is decomposed by microorganisms into soluble organic matter, and the biological treatment tank becomes burdened. can be reduced.

■ Because the foam separation tank was placed before the biological treatment tank, S
Before capturing S-based organic matter in the biological treatment tank, it can be discharged to the outside of the system in the foam treatment tank, thereby reducing the pollution load within the system.

■ By optimally distributing the load on the two processing devices depending on the fish breeding situation, it is possible to create a compact and flexible device/system.

(Example) Hereinafter, an example of the water treatment device for live fish according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of one embodiment of the present invention.

In FIG. 1, live fish 2 are stored in an aquarium 1,
The blower 3 is blown by a diffuser plate 4. Water 5 from the aquarium 1 is supplied to a biological treatment tank 7 by a pump 6, where it undergoes treatments such as decomposition and nitrification of organic matter by microorganisms 9 attached to a filter medium 8, and is sucked up by a pump 6a and returned to the aquarium I.

Also, the water 5 in the water tank 1 is sucked up by the pump 15,
Air is mixed into the foam separation tank 1 by the air bubble generator I6.
7 with 1 water. Water 5 from the foam separation tank I7 is sucked up by a pump J8 and returned to the water tank I via a heat exchanger 10 that keeps the water temperature constant. Further, a part of the foam separation tank 17 becomes bubbles and is discharged to the outside of the system through the foam separation discharge pipe 19. For the filter medium 8, coral sand, zeolite I, activated carbon, etc. are used. Furthermore, the aquarium 1 is equipped with a sensor 31 (for example, a UV meter, an S
A controller/roller 2 for controlling the discharge capacity of the pumps 6.6a, 15.18 and the amount of air sent to the bubble generator 16 based on the signals received from the controller (S meter, TOC word, etc.).
0 is set. In addition, a bubble generator 1 is used to supply air.
6 was used, but a fine bubble generating air diffuser plate or the like may also be used. Furthermore, a pump circuit may be provided independently for the arrangement of the heat exchanger for adjusting the water temperature. Moreover, although water is used, seawater may also be used.

In the above configuration, the operation will be explained next.

The water containing organic matter discharged by the fish 2 in the aquarium is pumped 6.
As well as being supplied to the biological treatment tank 7 and being treated,
[Pump] The water 5 sucked up by the bubble generator 1
Air is mixed in at 6 and foam bone II? is supplied to tank 17,
Bubbles are generated in the foam separation tank 17, organic substances in the water adhere to the bubbles by adsorption, etc., and the bubbles are transferred to the foam separation tank 1.
The foam is discharged to the outside of the system through a foam separation discharge pipe 19 disposed at the upper part of the foam. As a result, organic matter in the aquarium is treated with biological treatment M7.
and a foam separation tank 17. At this time, the flow rate flowing through the biological treatment tank 7 and the foam separation tank 17 is determined by detecting the water pollution with the sensor 3I, which changes depending on the amount or size of the fish 2 placed in the aquarium 1 or the fish's exhaled matter. The capacity of the treatment tank can be adjusted by adjusting the suction capacity of the pump. For example, when the amount of fish 2 is small, the discharge amount of the pump 15 is lowered and the fish are mainly treated by the biological treatment tank 7. When the amount of fish 2 increases slightly, the discharge capacity of the pump 15 is increased. Further, when the amount of fish 2 increases and the water becomes polluted, the discharge rate of the pump 15 is increased to discharge organic matter etc. in the water mainly through the foam separation tank 17 to the outside of the system. Similarly, the capacity of the treatment tank can be adjusted by controlling the bubble generator 16 and adjusting the amount of air supplied to the foam separation tank 17 according to the level of water pollution. Alternatively, the pump 15 may be operated first to utilize the biological treatment tank 7, and then the foam separation tank I7 may be utilized, or vice versa. Furthermore, the pump may be a variable displacement type pump with a discharge amount, or a driving electric motor with a variable rotation speed may be used. Furthermore, since the foam separator generates air bubbles, a function of dissolving oxygen in the water is inevitably generated, which can assist the blower of the aquarium 1.

FIG. 2 is an overall configuration diagram of another embodiment of the present invention. Note that parts that are the same as those in the first embodiment are given the same reference numerals, and explanations thereof will be omitted. Water 5 in tank I is sucked up by pump 2I,
[Bubble generator] Air is mixed in step 6 and supplied to the foam separation tank I7, where air bubbles are generated, organic matter in the water is attached to the bubbles by adsorption, etc., and the air is transferred to the foam separation tank I7. The foam is discharged to the outside of the system through a foam separation discharge pipe 19 disposed at the upper part of the bubble separation pipe 17. The water 5 in the foam separation tank 17 is supplied to the pump 2.
2, the flow rate regulator 23 and the heat exchanger 10
The water is then returned to tank 1. Further, at this time, the water is supplied from the return pipe 24 to the biological treatment tank 7 through the flow rate adjustment device 25 for treatment, and is sucked up by the pump 26 and returned to the water tank 1. The aquarium 1 includes a sensor 31 that detects water pollution;
In addition, a sensor 30 is installed in the foam separation tank I7 to detect the pollution of the water in the foam separation tank 17, and upon receiving the signal, the discharge capacity of the pump 21, 22, 26, and the air bubble generator I6 are adjusted.
A controller 2o is provided to control the amount of air sent to and the flow rate adjustment device 2325.

In the above configuration, the operation will be explained next.

Water 5 containing organic matter discharged by the fish 2 in the aquarium is sucked up by the pump 21, treated once in the foam separation tank 17, and then supplied to the biological treatment tank 7 as needed, where it adheres to the filter media 8. Processes such as decomposition and nitrification of the organic matter are performed by the microorganisms 9 present therein, and the organic matter is sucked up by the pump 26 and returned to the water tank 1.

For example, when the amount of fish 2 is small, the flow rate adjustment device 23
．． 25 and mainly treated by the biological treatment tank 7,
When the amount of fish 2 increases slightly, the flow rate to the foam separation tank 17 is increased. Further, when the amount of fish 2 increases, the flow rate to the foam separation tank 17 is gradually increased and the treatment is mainly performed by this device. The above operation is controlled by the controller 20 which receives the signal from the sensor 31. Also,
A sensor 32 is installed in the biological treatment tank 7 or the foam separation tank 17.
33 is installed, and when the sensor 32 or 33 receives a water pollution signal, the flow rate regulator 23 or 25 is activated to supply the biological treatment tank 7 or the foam separation tank 17, and the above-mentioned Alternatively, the treatment may be performed by replacing the biological treatment tank 7 and the foam separation tank I7.

(Effects of the Invention) As explained above, according to the present invention, a foam separation tank is provided separately from the biological treatment tank, and the load on the biological treatment tank is reduced by discharging organic matter in the water outside the system before decomposing it. This provides an excellent effect in that the load on both sides can be optimally distributed.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of one embodiment of the water treatment device for live fish of the present invention. FIG. 2 is an overall configuration diagram of another embodiment of the water treatment device for live fish of the present invention. Figure 3 is an overall configuration diagram of a conventional water treatment device for live fish.
Aquarium, 2...Fish, 3...Blower 14...Diffuser plate, 5...Water, 7...Biological treatment tank, 10...
Heat exchanger, 16...Bubble generator, 17...Foam separation tank, 19...Foam separation discharge pipe, 23.25...Flow rate adjustment device, 31.32.33...Sensor

Claims (4)

[Claims] (1) In a water treatment system for live fish that stores live fish and other marine products in a tank, there is an aquarium that stores the fish, a biological treatment tank that processes organic matter such as decomposition and nitrification using microorganisms, and an air bubble A water treatment device for live fish, comprising: a foam separation tank for attaching organic matter in water to the foam and discharging it outside the system. (2) The water treatment device for live fish according to claim (1), wherein the foam separation tank and the biological treatment tank are installed in parallel. (3) The water treatment device for live fish according to claim (1), wherein the foam separation tank and the biological treatment tank are installed in series. (4) In a water treatment system for live fish that stores live fish and other marine products in a tank, microorganisms decompose organic matter, nitrify the water used to store fish, etc., and remove organic matter from the water into air bubbles. A method for treating water for live fish, which is characterized in that it adheres to the water and discharges it out of the system.