JPS58116616A - Breeding of eel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cultivating eels using hot springs or hot water using waste heat.

Traditionally, eel farming involves setting up multiple tanks depending on the growth process: a whitebait tank, a small black fish tank, and a small tank for whitebait.
The fish were cultivated in multiple tanks, such as a thick tank for the scales and a tank for mounting them. A heater was embedded in each tank to promote growth, keeping the water temperature around 27 degrees Celsius. However, as energy conservation has become a problem in recent years, the conventional aquaculture method using heaters, which consumes a large amount of electricity, has become unsuitable. In addition, electricity costs have increased, making it unprofitable.

The present invention has been made in view of the above points, and its purpose is to mix hot water from hot springs or waste heat utilization with water and supply it to each tank, thereby reducing the energy source. To provide a method for aquaculture of capes, which is low in cost, contributes to energy saving, and reduces breeding costs.

Another object of the present invention is that by filtering and recycling the water in the aquarium, it is possible to further save energy, obtain sufficient profit, and reduce the cost of eel. The goal is to provide a method for cultivating eel that can supply the following.

Next, one embodiment of the present invention will be described with reference to the drawings.

In addition, the systems for cultivating whitebait, small blackfish, thick blackfish, and parents are all the same, so in the drawing, only two systems are shown, one for whitebait and one for the equipment, and the other systems are omitted. There is. Also, only the system for whitebaiting will be explained, and the explanation of other parts will be omitted.

1 is a hot spring, a hot water source using waste heat, and the water is pumped by a pump 1a. 2 is an underground water source, and water is pumped up by a pump 2a. 3 is hot water from hot water source 1 (approximately 80'
C) and water (approximately 18°C) from groundwater source 2, pulp 1
The pulp 3a is stored in a storage tank via b and 2b.
, 3b is opened appropriately to send water into the mixing tank 4, where about 2
Obtain water at 5-27°C. 5 is an aquaculture tank whose bottom surface is inclined toward the center and has a filth receptacle 5a formed in the center for storing filth such as cultured fish and leftover feed, and the mixing tank 4 is placed in this tank.
The water is stored in the pulp via 5b. Note that a net 5C is formed on the upper surface of the waste receiving portion 5a to prevent cultured fish from entering. Then, the waste in the waste receiving section 5C flows into the waste tank 6, where it is dumped outside.
The inside of the culture tank 5 is kept clean. Reference numeral 7 denotes a water wheel rotated by a motor 7a, which is installed on the water surface of the aquaculture tank 5 to generate a swirling water flow, thereby collecting filth in the water into the filth receiving portion 5a at the center of the bottom surface. 8 is an aeration machine with a built-in pump installed at the bottom of the culture tank 5 to supply oxygen to the water. 9 temporarily uses the water overflowing from the culture tank 5 as an intermediate tank and supplies the water to the primary filter tank 10. 10 is a filter tank separated into four tanks, and the first to third tanks 10a to IOC are provided with filters 10a' to 10C' for purifying filth in water and obtaining fresh water, and the fourth tank 10d The structure is such that air is sent from a proa device 12, which will be described later, and mixes oxygen into the water. Filters 108' in the first to third tanks 10a to 10C
~100' has a four-layer structure, with the lower three levels being crushed stone tanks, the upper (towards the U level, smaller crushed stones become smaller, and the top level being the Hechimaron layer.Then, the middle layer The water sent from 9 enters the first tank 10a of the filter tank 1o, is led into the second tank 10b from the lower part of the partition between it and the second tank 10b via the filter 10a', and is filtered here. 10b
' from the top of the partition between the third layer 10c and the third layer l.
.

C, and is further filtered by a filter 10C' and enters a fourth tank 10d. Here, the air sent from the proa device 12 is mixed in, resulting in clean water that contains sufficient oxygen. Reference numeral 11 denotes a final tank in which fresh water from the fourth tank 10d of the filter tank 10 is stored, and a pump lla is installed therein.

The fresh water sucked up by this pump lla is returned to the culture tank 5 via the pulp 10b. 12
is a prower device in which five proers 12a to 12e are installed, and each proer 12a to 12e is used to produce pulp 12a' to 12a.
The air is concentrated into one pipe through the pulp 2e' and supplied to the fourth tank of the filter tank 10 through the pulp 12f (
4) Do.

The above explanation describes a system for cultivating whitebait, but this system has four stages: one for small scales, one for thick scales, and one for equipment.
Since each system is the same as the first stage system for whitebait, the explanation is omitted, and the two stages for whitebait are omitted in the drawings.

Furthermore, between the system for whitebait mentioned above and the system for large blackfish and the system for placing them, the latter is a larger fish and has more excrement and leftover food, so it creates a large swirling water current and disposes of the waste. The difference is that it is necessary to collect the water in the receiving part 5a, and therefore two water turbines 7 are installed. Furthermore, in the latter two stages, the filter tank 10 does not have a fourth tank, and oxygen is not supplied. This is because as the cultured fish grows, they do not require an amount of oxygen, and the supply of oxygen by the aerator 8 in the culture tank 5 is sufficient.

Next, a method for cultivating eels using the above system will be explained.

Whitebait, small (roko), large black and parent fish are placed in their respective aquaculture tanks 5.The aquaculture tanks 5 are filled with hot water from a hot water source 1 obtained by saving energy by using hot springs and waste heat. Hot water and water from underground water source 2 are mixed in tank 4
Since water at 25-27°C mixed with water is being supplied.

The growth of farmed fish is promoted. In this aquaculture tank 5, a swirling water flow is formed by a water wheel 7, and filth such as the excrement of the aquaculture fish and the remains of feed is collected in the center and sent into the waste right 6 from the filth receiving part 5a, and the water in the aquaculture 1115 is Cleaned. Furthermore, since air is sent into the water in the culture tank 5 by the aerator 8, sufficient oxygen is also supplied, creating a good environment for cultured fish.

On the other hand, water overflowing from the aquaculture tank 5 is sent into the filter tank 10 via the intermediate tank 9, and is filtered through three stages of filters 10a' to 100.
', and oxygen is supplied by the air sent from the blower device 12 in the fourth tank 10d (not available for large scales and devices), resulting in fresh water sufficiently mixed with oxygen. Then, this fresh water is returned to the aquaculture tank 5 from the final tank 11 by the pump lla, thus eliminating the waste of hot water and water, and since this water is not cold water, the wastage of the heat source is also eliminated, resulting in overall energy savings. has been done.

As described above, the present invention mixes hot water from a hot spring or utilizing waste heat, and supplies the water to the aquaculture tank at an optimal temperature.The water overflowing from the aquaculture tank is filtered and returned to the aquaculture tank. Since it is recycled, it is possible to save energy in the energy source and water, making it possible to realize a profitable business as a whole and to produce eel at low cost.

[Brief explanation of the drawing]

The figure is an explanatory diagram of a system used in the eel farming method according to the present invention. 1... Hot water source 2... Groundwater source 4... Mixing tank 5... Aquaculture tank 10... Filter tank
12...Plower device JP-A-58-116616
(4)

Claims (1)

[Claims] A method for mixing hot spring water and water using waste heat from hot springs and supplying the mixture into the aquaculture tank, a means for supplying oxygen in the aquaculture tank, and a means for creating a swirl in the water in the aquaculture premises to direct waste to the center of the aquaculture tank. means for collecting and removing the collected filth;
An eel characterized in that whitebait, small scale fish, large scale fish, and equipment are cultivated in the culture tank of the system, which has a means for filtering water from the culture tank and returning it back into the culture tank. cultivation method.