JP2001320992A - Apparatus for treating layer net with chemicals - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for treating a laver net with chemicals capable of surely protecting the laver net from the deterioration caused by the water scale and dust from seawater or the floating material such as laver scraps, and by which the repeated use of the treating liquid is enabled, decreased the loss of the liquid, prevent the discharge of the waste treating liquid into the sea and surely prevent the pollution of the natural environment. SOLUTION: The treating apparatus is provided with a laver net treating tank 2, a filter tank 3, a treating liquid holding tank 4, a chemical supplying means 5 to supply the chemical to the treating liquid holding tank 4, a diluting agent supplying means 6 to supply a diluting agent to the treating liquid holding tank 4, a pH detection means 7 to detect the pH value of the treating liquid composed of the chemical and the diluting agent and supplied to the treating liquid holding tank 2, a circulation means 8 to circulate the treating liquid between the laver net treating tank 2 and the treating liquid holding tank 4 and a recycling means 9 to recycle the treating liquid in the laver net treating tank 2 through the filter tank 3 to the treating liquid holding tank 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laver net chemical processing apparatus for performing various chemical treatments such as acid treatment on a laver net spread on a laver farm.

[0002]

2. Description of the Related Art In general,
Nori cultivation is carried out by a floating method in which a float is attached to a laver net and floated on the surface of the sea and extended and stopped by an anchor, or a strut method in which a laver net is moored and extended on a pole standing in the sea. I have. The proper use of both types is determined by the location conditions of the farm.

[0003] In such a nori cultivation, there are factors that lower the quality of the nori, such as the adhesion of suspended matter such as seawater scales and dust to the nori net and the propagation of various bacteria.

Therefore, in order to cultivate high-quality and healthy laver and improve the yield rate, acid treatment is applied to the laver net twice or three times between the cutting of the laver. A chemical treatment operation using various chemicals is performed. Immediately after cutting the laver, a chemical treatment operation using various chemicals represented by acid treatment is performed on the laver net.

The present applicant has disclosed Japanese Patent Application Laid-Open No. 3-43028,
In Japanese Patent Application Laid-Open No. 4-228015, etc., while diving under a laver net and proceeding in the longitudinal direction of the laver net, the laver is cut or a processing solution adjusted to a predetermined pH value is put into a processing tank. There has been proposed a laver work boat that automatically performs chemical treatment by immersing a laver net in a treatment liquid in the treatment tank.

Further, the applicant of the present invention disclosed in Japanese Patent Application Laid-Open No. 8-37968 discloses a method in which a processing solution adjusted to a predetermined pH value is put into a processing tank, and a laver net is immersed and passed through the processing solution in the processing tank. When performing chemical treatment, the pH of the treatment solution
A laver net drug treatment device is proposed that can keep the value within the effective range of the drug treatment. That is, when the processing liquid is diluted with seawater by immersing the laver net containing seawater in the processing liquid, a required amount of a chemical is added to adjust the pH value of the processing liquid within an effective range of the chemical processing. To keep it.

According to the present invention, the pH value of the treatment liquid can be maintained within an effective range of the chemical treatment, and further, the treatment liquid can prevent quality deterioration due to floating substances such as seawater scales, dust and laver debris. It is possible to prevent the processing solution repeatedly, and to use the processing solution repeatedly, thereby reducing the waste of the processing solution and preventing the disposal of the processing solution into the sea, thereby reliably preventing the pollution of the natural environment. It is an object of the present invention to provide a laver net chemical treatment apparatus capable of reliably preventing the laver itself from deteriorating due to the degraded processing liquid.

[0008]

In order to achieve the above-mentioned object, a laver net chemical treatment device of the present invention comprises a laver net treatment tank,
A filtration tank, a processing liquid storage tank, a chemical supply unit for supplying a chemical into the processing liquid storage tank, a diluent supply unit for supplying a diluent into the processing liquid storage tank, PH detecting means for detecting a pH value of a processing liquid comprising a drug and a diluent supplied to the circulating means; circulating means for circulating the processing liquid between the laver processing tank and the processing liquid storage tank; A reflux unit for returning the treatment liquid in the net treatment tank to the treatment liquid storage tank through the filtration tank; and a pH of the treatment liquid in the treatment liquid storage tank based on the detection result by the pH detection unit.
Control means for controlling the supply amount of the chemical and / or diluent into the processing liquid storage tank so as to keep the value within a predetermined range.

[0009] According to the laver net chemical treatment apparatus of the present invention configured as described above, the chemical processing of the laver net or the like is sufficiently performed in the laver net processing tank, and the processing liquid subjected to the chemical processing is stored in the processing liquid storage tank. Is circulated and fed to the tank, and is controlled to maintain the pH value of the processing liquid within a predetermined range in the processing liquid storage tank,
Thereafter, the treatment liquid is circulated and sent to the laver net treatment tank through the circulation means, and is again subjected to chemical treatment of the laver net and the like. After the chemical treatment is completed, the processing liquid subjected to the chemical treatment in the laver net processing tank is circulated and sent to the filtration tank together with the floating substance through the reflux means, and the suspended solids which may deteriorate the processing liquid Are reliably filtered and removed, and only the processing liquid is returned to the processing liquid storage tank, and the pH of the processing liquid is controlled to be maintained within a predetermined range in the processing liquid storage tank. Since the processing solution is used, waste of the processing solution can be reduced, and the disposal of the processing solution into the sea can be prevented, so that the pollution of the natural environment can be reliably prevented.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a schematic diagram illustrating the configuration of an embodiment of a laver net chemical treatment apparatus according to the present invention.

As shown in FIG. 1, a laver net chemical treating apparatus 1 of the present embodiment comprises a laver net treating tank 2, a filtration tank 3, a processing liquid storage tank 4, and a chemical in the processing liquid storage tank 4. And a diluent supply means 6 for supplying a diluent into the processing liquid storage tank 4, and a pH of a processing liquid comprising a drug and a diluent supplied to the processing liquid storage tank 4. PH detecting means 7 for detecting the value, and circulating means 8 for circulating the processing liquid between the laver processing tank 2 and the processing liquid storage tank 4.
Reflux means 9 for returning the processing liquid in the laver processing tank 2 to the processing liquid storage tank 4 through the filtration tank 3;
The supply amount of the chemical and / or diluent into the processing liquid storage tank 4 is controlled so that the pH value of the processing liquid in the processing liquid storage tank 4 is maintained within a predetermined range based on the detection result by the detection means 7. It is formed by control means 10 for controlling.
These components are installed in a laver work boat (not shown).

The configuration of each part will be further described.

The laver net processing tank 2 is for treating a laver net (not shown) with a chemical using the processing liquid W, and is disposed at a position higher than the processing liquid storage tank 4. And
Inside the nori net processing tank 2, the tank wall 11 of the nori net processing tank 2 is provided.
Are provided so as to face each other, and two outer compartments 13, 13 defined by a tank wall 11 and a barrier 12 are provided.
The inside is divided into three parts by an inner section 14 divided by two partition walls 13. 50 inside this interior compartment 14
The processing liquid W of about 0 to 3000 liters is filled as required, and is configured to perform chemical treatment on the laver net.
Therefore, when the processing liquid W is supplied into the internal compartment 14 beyond the capacity in the internal compartment 14, the processing liquid W
It is configured so as to overflow into the outer compartment 13 beyond 2.

The filtration tank 3 has an opening 17 at the center of the upper surface of about 20 to 30 liters, and an opening 19 formed at the center of the inside of the outer container 16 at the center of the upper surface. And an internal container 18 provided. An outer peripheral portion of the inner container 18 is provided with a filter 20 such as a wire net for filtering suspended matters such as seawater scale, dust, and laver debris. In addition, a mountain-shaped roof-like dispersion member 21 for dispersing the processing liquid W supplied into the inside in the outer peripheral direction is provided immediately below the opening 19 in the internal container 18.

The processing liquid storage tank 4 is formed in a tank shape having a capacity capable of storing at least the total amount of the processing liquid in the laver net processing tank 2 and the filtration tank 3. Then, inside the processing liquid storage tank 4, a later-described drug 2 constituting the processing liquid W is formed.
2 and a diluent 23 are supplied. Further, a drain cock 24 for discharging the processing liquid W filled in the processing liquid storage tank 4 to the outside as necessary is provided at the bottom of the processing liquid storage tank 4. A level sensor 25 for detecting the position of the level of the processing liquid W filled in the processing liquid storage tank 4 is provided in the processing liquid storage tank 4. The level sensor 25 can detect whether the level of the processing liquid W in the processing liquid storage tank 4 is at a predetermined position and send a detection signal to the control means 10. For example, it can be selected from a float sensor called a float switch, a differential pressure sensor, an ultrasonic sensor, a capacitance sensor, and the like.

The medicine supply means 5 is configured to supply the medicine 22 in the medicine tank 33 to the treatment liquid storage tank 4 through a medicine supply pipe 34 to which an automatic operation valve 26 opened and closed by an electromagnetic valve is attached. Have been. At the bottom of the medicine tank 33, a drain cock 35 for discharging the medicine 22 filled in the medicine tank 33 to the outside as necessary is provided. Further, the chemical tank 33 is disposed at a position higher than the processing liquid storage tank 4.

The diluent supply means 6 uses seawater as the diluent 23 and is configured to directly supply seawater from the sea through the diluent supply pipe 36 into the processing liquid storage tank 4 by the diluent pump 27. I have.

The pH detecting means 6 is capable of detecting the pH value of the processing liquid W comprising the chemical 22 and the diluent 23 supplied into the processing liquid storage tank 4 and sending a detection signal to the control means 10. In this embodiment, the pH may be
It is composed of a sensor.

The circulating means 8 is formed only by the processing liquid return pipe 28 for returning the processing liquid W overflowing from the internal section 14 in the laver processing tank 2 to each of the external sections 13 into the processing liquid storage tank 4 by natural fall. Processing solution return system 8a
In order to supply the processing liquid W in the processing liquid storage tank 4 into the inner compartment 14 of the laver processing tank 2, the processing liquid W in the processing liquid storage tank 4 is processed by the processing liquid supply pump 31. The processing liquid supply system 8b is configured to supply the processing liquid to the inside section 14 of the laver processing tank 2 through the supply pipe 32. A gate valve 28a is provided in the processing liquid return pipe 28.

The reflux means 9 comprises a processing liquid return system 9a formed by a processing liquid return pipe 15 for returning the processing liquid W in the inner section 14 in the laver net processing tank 2 from the bottom into the filtration tank 4 by natural fall. And the processing liquid W in the filtration tank 3 is supplied to the processing liquid supply pump 2 in order to supply the processing liquid W in the filtration tank 3 to the inside.
9, a processing liquid supply system 9b configured to supply the processing liquid into the processing liquid storage tank 4 through the processing liquid reflux pipe 30. A gate valve 15 is provided in the processing liquid return pipe 15.
a is provided.

The control means 10 includes a memory (not shown)
It is composed of a CPU and the like. This control means 10 includes:
The detection signal of the pH value of the processing liquid W in the processing liquid storage tank 4 detected by the pH sensor 7 and the position of the level of the processing liquid W filled in the processing liquid storage tank 4 detected by the level sensor 25 , Respectively.

The control means 10 sets this detection value in advance based on the detection result (detection value) of the pH value of the processing liquid W in the processing liquid storage tank 4 detected by the pH sensor 7. It is determined whether the pH value is within a range of an effective pH value for processing the laver net, and when the pH value is smaller than a preset range, the diluent pump 27 is driven to dilute the processing solution storage tank 4. When the seawater as the agent 23 is supplied and the pH value is larger than the preset range, the automatic operation valve is set to 20.
Is driven to the open state to store the chemical 2 in the processing liquid storage tank 4.
2 are supplied. This control means 10
The processing liquid supply pumps 31 and 29 of the circulation means 8b and the reflux means 9b are constantly driven to supply the processing liquid W in the filtration tank 3 into the processing liquid storage tank 4 or the processing liquid storage tank 4, respectively. 4 is supplied to the laver processing tank 2.

The control means 10 includes a level sensor 25
Is based on the detection result of the position of the level of the processing liquid W filled in the processing liquid storage tank 4 detected by the processing liquid storage tank 4.
It is determined whether or not the position of the liquid level of the processing liquid W within the predetermined range is within a predetermined range, and is not positioned within the predetermined range (processing liquid W
In this case, the automatic operation valve 20 and / or the diluent pump 27 are driven to store the chemical 22 in the processing liquid storage tank 4.
And / or the diluent 23 is supplied to the processing solution storage tank 4
The position of the liquid level in the inside is positioned within a predetermined range.

That is, the control means 10 of the present embodiment comprises:
PH value controller 3 for controlling at least the pH value of processing solution W
7 and a processing liquid amount controller 38 for controlling the amount of the processing liquid W in the processing liquid storage tank 4.

Next, the operation of the present embodiment having the above-described configuration will be described.

In the laver net chemical treating apparatus 1 of this embodiment, the chemical 22 and the diluent 23 are mixed in the treating liquid storage tank 4 to form a treating liquid W having a pH value within a predetermined range. Is supplied from the processing liquid storage tank 4 into the internal compartment 14 of the laver processing tank 2 through the circulation means 8b.

The laver net is immersed in and passed through the processing liquid W in the inner compartment 14, so that a predetermined chemical treatment is surely performed. Next, the processing liquid W used for chemical treatment of the laver net in the laver net processing tank 2 and overflowing into the outer compartment 13 is subjected to a filter (not shown) to remove suspended matters and the like, and then into the processing liquid storage tank 3. It is supplied by natural fall through the circulation means 8a.

Next, when the processing liquid W is circulated into the processing liquid storage tank 4, the pH value of the processing liquid W in the processing liquid storage tank 4 is maintained within a predetermined range as described above, and The chemical 22 and / or the diluent 23 are supplied into the processing liquid storage tank 4 such that the amount of the processing liquid W in the processing liquid storage tank 4 is maintained within a predetermined range.

Therefore, according to the present embodiment, the pH value of the processing liquid W in the processing liquid storage tank 4 is set within the predetermined range while the pH value of the processing liquid W is detected in real time by the pH detecting means 7. The supply of the chemical 22 and / or the diluent 23 into the processing liquid storage tank 4 can be reliably controlled. Since the processing liquid storage tank 4 having a small capacity is used, the amount of the processing liquid W in the processing liquid storage tank 4 is small, and
The scale for controlling the H value can be reduced, and when a chemical 22 and a diluent 23 having different pH values are mixed in the processing liquid storage tank 4, the pH value (concentration) in the processing liquid storage tank 4 is reduced. It is possible to make the treatment liquid W uniform quickly, to improve the responsiveness when the medicine 22 and the diluent 23 are mixed, and to surely keep the pH value of the treatment liquid W within a predetermined range.

Then, the processing liquid W having a pH value within a predetermined range is supplied again from the processing liquid storage tank 4 to the laver net processing tank 2 and is subjected to chemical processing of the laver net.

When such a chemical treatment is completed, the treatment liquid W applied to the chemical treatment in the inner section 14 of the laver net treatment tank 2 is naturally dropped into the filtration tank 3 together with suspended matters through the reflux means 9a. Circulated feed. And the opening 17,
The treatment liquid W supplied to the inner vessel 18 of the filtration tank 3 through the flow path 19 is dispersed to the outer peripheral portion by the dispersing body 21, and the filter 20 of the inner vessel 18 causes the filter 20 to degrade the treatment liquid W. Suspended matters such as water scale, garbage and laver debris are reliably filtered. The suspended matter remaining in the inner container 18 is taken out to the outside by an appropriate method. In this way, only the processing liquid W from which the floating substances and the like flowing out between the outer container 16 and the inner container 18 of the filtration tank 3 are reliably filtered and removed is returned to the next processing liquid storage tank 4 by the reflux means. Refluxed through 9b. According to the present embodiment,
The waste of the processing liquid W can be saved, and the disposal of the processing liquid W into the sea can be prevented, so that the pollution of the natural environment can be reliably prevented.

As described above, in the present embodiment, it is possible to reliably prevent the quality of the treatment liquid W from being deteriorated by suspended matters such as seawater scales, dust, and laver debris. It is possible to repeatedly use the liquid W,
It is possible to reliably prevent the seaweed itself from being deteriorated due to the deteriorated processing solution.

The present invention is not limited to the above embodiments, but can be modified as required.

[0035]

As described above, according to the laver net chemical treatment apparatus of the present invention, the pH value of the treatment liquid can be reliably maintained within a predetermined range, and the chemical treatment of the laver net can be effectively performed. The processing liquid can be performed efficiently and efficiently, and the quality of the processing liquid can be reliably prevented from deteriorating due to suspended matter such as seawater scales, dust and laver debris, and the processing liquid can be reused repeatedly, thereby reducing waste of the processing liquid. And avoiding the disposal of the processing solution into the sea, thereby preventing pollution of the natural environment.
An extremely excellent effect is achieved in that the deterioration of the laver itself due to the deteriorated treatment liquid can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of an embodiment of a laver net chemical treatment device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nori net chemical processing apparatus 2 Nori net processing tank 3 Filtration tank 4 Treatment liquid storage tank 5 Chemical supply means 6 Diluent supply means 7 pH detection means 8, 8a, 8b, 8c Circulation means 9, 9a, 9b Reflux means 10 Control Means 22 Drug 23 Diluent W Treatment liquid

Claims (1)

[Claims] 1. A laver net treatment tank, a filtration tank, a treatment liquid storage tank, a medicine supply means for supplying a chemical into the treatment liquid storage tank, and a dilution for supplying a diluent into the treatment liquid storage tank. Agent supply means, pH detection means for detecting the pH value of the processing liquid comprising the drug and diluent supplied into the processing liquid storage tank, and between the laver net processing tank and the processing liquid storage tank. Circulating means for circulating the processing liquid, reflux means for returning the processing liquid in the laver processing tank to the processing liquid storage tank through the filtration tank, and the processing liquid storage tank based on the detection result by the pH detection means. Control means for controlling the supply amount of the chemical and / or diluent into the processing liquid storage tank so as to maintain the pH value of the processing liquid within a predetermined range. .