JPH0595740A - Treatment of laver net and apparatus therefor - Google Patents

Abstract

PURPOSE:To promote growth of laver and to enable harvesting of a high-quality laver while keeping growth of the respective laver nets to a constant condition by immersing the laver nets in an acid treatment solution having a constant pH value. CONSTITUTION:An acid stock solution is added with stirring to sea water accommodated in a treatment tank 2 of a ship so as to prepare an acid treatment solution of a prescribed pH value, e.g. about pH2.0. One side part of a laver net is engaged with a lifting unit 3 and the laver net is drawn up. The drawn-up laver net is immersed in the acid treatment solution and the treated laver net is returned to the sea again. Other laver nets are subjected to the same treatment in order. During the above-mentioned treatment, pH of the acid treatment solution (a) in the treatment tank 2 is detected and an acid stock solution-supply unit 8 is actuated to supply the acid stock solution in the tank 10 to the treatment tank 2. Thereby, pH of the acid treatment solution (a) is kept to, e.g. about 2 and the laver nets are immersed in the acid treatment solution (a) of a constant pH value to promote growth of laver and keep growth of the respective laver nets constant. Thus, high-quality laver can be harvested.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention removes disease fungi and algae by immersing the seaweed net in an acid-treated solution having a constant pH value to accelerate the growth of the seaweed and to grow each seaweed net. The present invention relates to a seaweed net processing method and a seaweed processing device capable of harvesting high-quality seaweed in a constant state.

[0002]

2. Description of the Related Art Conventionally, for the cultivation of seaweed, there has been a method of accelerating the growth of seaweed by immersing the seaweed net to which the seaweed spores are attached in an acid treatment solution to prevent the acid from damaging disease fungi and algae. It is adopted. Such an acid treatment liquid is obtained by adding an acid stock solution to seawater, and this acid stock solution contains, for example, an organic acid or an amino acid as a main raw material, and a nutrient such as a phosphate, a sugar or the like is mixed therein. It is a thing.

Furthermore, as the work, the seaweed net is pulled up to the ship, the seaweed net is put in the processing tank in the ship, and the seaweed net is immersed in the acid treatment solution to treat the seaweed net. I have to.

[0004]

However, the above seaweed net work has the following problems.

That is, since a certain amount of seawater was put in the treatment tank and an appropriate acid stock solution was not put in the seawater, the seaweed net was manually pulled up in the treatment tank. However, since the seaweed net contains plenty of seawater, when the seaweed net is pulled up, seawater enters the treatment tank, the acid treatment solution is diluted, and the dipping treatment becomes insufficient. To maintain the concentration of the acid treatment liquid constant.

However, the seaweed net work on the ship is very busy, and therefore, the replenishment of the acid-treating solution is carried out quickly and in a small amount between the operations, so that the concentration of the acid-treating solution varies. It was difficult to achieve the purpose of acid treatment.

It is an object of the present invention to provide a seaweed net treating method and treating apparatus which can solve the above problems.

[0008]

In the present invention, the seaweed net disposed in the sea is pulled up and immersed in the acid treatment solution in the treatment tank, and the acid treatment solution in the treatment tank has a constant pH value, for example. The present invention provides a method for treating seaweed net, which is characterized in that the seaweed net is treated at a pH of about 2.0.

Further, according to the present invention, a treatment tank having a constant capacity, a laver net lifting device, an acid stock solution replenishing device for replenishing the acid stock solution in the same tank, and a pH of the acid treatment solution in the processing tank. The value is detected, the supply device is operated based on the detected value,
The present invention provides a laver net treatment device comprising a control unit for holding an acid treatment liquid at a constant pH value, for example, around pH 2.0.

[0010]

According to the present invention, the acid stock solution is added to seawater placed in the treatment tank of the vessel and stirred to obtain a constant pH value, for example, p.
Use an acid treatment solution with a H2.0 value of around 2.0. Then, engage one side of the seaweed net with the pulling device, pull up the seaweed net, immerse the seaweed net in the acid treatment solution, return the soaked seaweed net to the sea again, and successively Work.

During the operation, the pH value of the acid treatment liquid in the treatment tank is detected, and the acid stock solution replenishing device is operated based on the detected value to replenish the acid stock solution in the tank 10 into the treatment tank. Then, the acid treatment liquid is kept at a constant pH value, for example, around pH 2.0.

Thus, according to the present invention, a constant pH
By dipping the seaweed net in the acid treatment liquid a having a certain value, the disease fungi and the algae are removed to accelerate the growth of the seaweed, and the growth of each seaweed net is kept constant, and the high quality seaweed can be harvested. ..

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described in detail with reference to the drawings. In the explanatory view of FIG. 1, reference numeral 1 indicates a seaweed net treating apparatus according to the present invention. In No. 1, the seaweed net is treated because the seaweed net is not pulled up, and its configuration will be described in detail below. That is, the seaweed net treating apparatus 1 has a seaweed net lifting device 3 mounted in a processing tank 2 having a constant capacity.
One rotator 4, 5 is pivotally supported, and each rotator 4, 5 is rotatable forward and backward, one rotator 4 is for pulling up the laver net, and the other rotator 5 is for returning the nori net. .

A drive engine 6 and an interlocking mechanism 7 are provided on one side of the processing tank 2, and the output shaft of the engine 6 is connected to the rotating bodies 4 and 5 via the interlocking mechanism 7. It is linked and linked.

According to the present invention, the acid stock solution replenishing device 8 for supplying the acid stock solution into the processing tank 2 and the pH of the acid treatment solution a are detected in the laver net processing device 1 and the replenishing device 8 is operated to operate the acid. A control unit 9 for holding the treatment liquid a at a constant pH value, for example, around pH 2.0 is provided so that the pH in the treatment tank 2 can be kept constant.

In this embodiment, the replenishing device 8 comprises a tank 10 containing an acid stock solution, a pipe 11 extending into the processing tank 2,
It comprises a pump 12 for replenishing the acid stock solution, and a tank 10 is arranged on the other side of the processing tank 2, and the base end of a pipe 11 is connected to the tank 10 via the pump 12, Is disposed along the bottom surface from the side surface in the processing tank 2. Reference numeral 13 indicates a hole provided in the pipe 11 for ejecting the acid stock solution.

In addition, a pH detecting sensor is provided in the processing tank 2.
14 is attached to detect the pH value of the acid treatment solution a, and a pH detection box 15 having a control unit 9 is disposed near the replenishing device 8, and the value is measured by a meter or the like of the box 15. I'm trying to display.

Further, in the present invention, the replenishing device 8 is operated via the control section 9 to replenish the acid stock solution into the processing tank 2,
The pH value of the acid stock solution is kept constant, and the configuration of the control unit 9 that operates the replenishing device 8 will be described in detail. In FIG. 3, the control unit 9 includes a microprocessor unit MPU, an input / output interface 16 , 17 and R
It is composed of a memory 18 including an OM and a RAM and a timer 19, and sends an output signal from the pH detecting sensor 14 to the input interface 16.

On the other hand, the pump 12 of the replenishing device 8 is connected to the output interface 17, and an operation signal is transmitted to the pump 12. Further, the memory 18 stores a program for operating the pump 12 based on the output signal from the pH detecting sensor 14 described above. In this manner, the control unit 9 controls the acid stock solution replenishing device 8 to control the acid treatment solution a.
The pH value of can be kept constant.

In this embodiment, the control unit 9 is set with the upper limit value and the lower limit value of the pH, and the pH value between them is kept constant, and the target pH value of the acid treatment liquid a is For example, when it is set to 2.0, the upper limit value and the lower limit value to the control unit 9 are set to 2.05 to 1.95, and the pH in the acid treatment liquid a is set as much as possible.
I'm trying to keep it at 2.0.

Next, the processing method by the seaweed net processing apparatus 1 will be described in detail. That is, first, if the seawater in the treatment tank 2 is, for example, 300 liters, the acid stock solution is 1.5
Add liter and stir to give a constant pH value, eg p
The acid treatment liquid a is H2.0.

Then, one side of the seaweed net is engaged with the rotating body 4 of the lifting device 3 and rotated by the drive engine 6 to pull up the seaweed net, and the acid treatment liquid a contains about 6 seaweed nets. Let it soak for a minute, return the soaked seaweed net to the sea again, and work on other seaweed nets in sequence.

During the operation, the pH detecting sensor 14 in the treatment tank 2 detects the pH value of the thin acid-treated solution a, and the replenishing device 8 uses the detected value to detect the acid stock solution in the tank 10. Is supplied to the treatment tank 2 to maintain the pH value of the acid treatment liquid a at a constant pH value, for example, around 2.0.

According to this treatment method, the seaweed net is immersed in the acid treatment solution a having a constant pH value to remove disease fungi and algae, accelerate the growth of the seaweed, and keep the growth of each seaweed net constant. As a condition, the yield of seaweed can be increased.

The acid stock solution used in the above-mentioned laver net treatment method contains sulfur-containing amino acids as main raw materials, and nitrates such as sodium nitrate and potassium nitrate as nutrients for laver and phosphates such as sodium phosphate and potassium phosphate. In addition to mixing with each, organic acids such as citric acid, malic acid, and phytic acid are mixed.

Further, glucose, fructose, etc. are mixed as a carbohydrate with the sulfur-containing amino acid to heal the cell membrane of seaweed injured by disease and acid damage to give seaweed a healthy black luster and suppleness. It is a thing. In particular, with organic acids such as citric acid, while sterilizing pathogens such as red rot,
It eliminates algae, promotes the growth of seaweed, and improves the quality of seaweed.

Next, the test results of the seaweed net treatment method of the present invention will be described in detail. As shown in FIG. 4, the seaweed net processing operation was performed by the conventional manual work for both A and B tests, and the C test used the seaweed net processing apparatus 1 of the present invention. As the method for replenishing the acid stock solution of the acid treatment solution a, the A test is a replenishment amount and a replenishment method which are usually performed, and the B test is the same replenishment method as the A, and the replenishment amount is about 1.5 times the A test. It was used.

Further, the pH value of the acid treatment liquid a of the present invention is 2.
The experiment was carried out by the C test performed while holding the temperature around 0.

Table 1 shows the defect status of the seaweed obtained as a result of the above experiment, and Table 2 shows the evaluation status.

[0030]

[Table 1]

[0031]

[Table 2]

In the table, 0: None, +: Yes, ++: Many,
Therefore, as shown in Tables 1 and 2, the A and B tests had a large number of defects, and it was not possible to collect the finest seaweed, while the present invention showed almost no defects. , It is possible to collect high quality seaweed with excellent luster.

[Brief description of drawings]

FIG. 1 is a perspective view of a seaweed net treating apparatus according to the present invention.

FIG. 2 is an explanatory view of the seaweed net treating apparatus.

FIG. 3 is an explanatory diagram of a control unit of the seaweed net processing apparatus.

FIG. 4 is a graph showing the operation of the seaweed net treatment method of the present invention.

[Explanation of symbols]

 1 laver net treatment device 2 treatment tank 4 lifting device 5 rotating body 4 rotating body 9 control unit 14 pH detection sensor

Claims (2)

[Claims] 1. A seaweed net placed in the sea is pulled up and immersed in the acid treatment solution a in the treatment tank 2, and the acid stock solution in the treatment tank 2 is maintained at a constant pH value, for example, around pH 2.0. Then, the seaweed net treatment method is characterized in that the seaweed net is treated. 2. A treatment tank 2 having a fixed capacity, a laver net lifting device 3, an acid stock solution replenishing device 8 for replenishing the acid stock solution in the same, and an acid treatment solution a in the treatment tank 2. It is configured by a control unit 9 that detects a pH value, operates the replenishing device 8 based on the detected value, and holds the acid treatment liquid a at a constant pH value, for example, around pH 2.0. Nori net processing equipment to be.