JP7378130B2 - Salinity regulator and box ship - Google Patents

Description

The present invention relates to a salinity regulating device and a box ship.

As is well known, in seaweed farming, seaweed nets are treated with glycolic acid, lactic acid, tartaric acid, and apple for the purpose of exterminating algae (green laver, diatom, etc.) and/or preventing diseases (red rot, white rot, etc.). Treatment (acid treatment) is performed by immersing it in acid or acid-treated water such as citric acid. Patent Document 1 below describes how to efficiently remove algae in a short period of time by adding a compound salt for high salt treatment, which hardly changes the pH of the acid-treated water, to the acid-treated water. A seaweed treatment liquid and a seaweed treatment method that enable extermination and disease prevention are disclosed.

Japanese Patent Application Publication No. 2005-27557

By the way, the above-mentioned background technology shows from a chemical standpoint that algae can be exterminated and diseases can be prevented efficiently by adding mixed salt for high-salt treatment to acid-treated water. The specific equipment configuration at the seaweed cultivation site is not disclosed. That is, the background art does not indicate a specific means for acid-treating seaweed nets under high salt concentration.

At seaweed farming sites, there are two methods: acid treatment of seaweed nets using relatively large acid treatment vessels (so-called submersible vessels) and cases of acid treatment of seaweed nets using relatively small box-shaped vessels. There is. Submersible vessels have relatively large hulls, so they have a relatively high degree of freedom when it comes to installing acid treatment equipment, but box-shaped vessels have relatively small hulls, so there are significant restrictions on where acid treatment equipment can be installed. Ru. Therefore, there is an urgent need to develop a specific acid treatment device for acid treatment of seaweed nets under high salinity on box ships.

The present invention has been made in view of the above-mentioned circumstances, and aims to provide a salinity adjustment device and a box-shaped ship that can adjust the salinity concentration when processing seaweed nets.

In order to achieve the above object, in the present invention, as a first solution related to a salinity adjustment device, a salt water generating unit generates salt water with a higher salinity concentration than the seaweed cultivation area and supplies it to the seaweed net treated water. The salt water generating section is provided with at least one pair of winding rolls in the front and back direction for winding up the seaweed net with the seaweed attached thereto, and the salt water generation section is provided with a salinity adjustment system for adjusting the salt concentration of the seaweed net treated water, and the salt water generation section is provided with at least one pair of winding rolls in the front and back direction for winding up the seaweed net with the seaweed attached thereto. In the ship body that stores treated water, a means is adopted in which it is provided between the winding rolls.

In the present invention, as a second solving means related to a salinity adjustment device, in the first solving means, the salt water generating section is a bottomed cylinder extending in the left-right direction of the ship body, and the lower part has the A method is adopted in which a salt water discharge hole is provided for discharging salt water.

In the present invention, as a third solution related to a salt adjustment device, in the first or second solution, the brine generation section includes a salt storage section that accommodates powdered salt, and adds water to the powdered salt. A method of generating the brine by adding the salt water is employed.

In the present invention, as a fourth solution related to a salinity adjustment device, in the third solution, the salinity adjustment system draws the seaweed net treated water and supplies it as water to the salt storage section. Adopt.

In the present invention, as a fifth solution related to the salinity adjustment device, in any one of the first to fourth solutions described above, an acid stock solution having a higher acidity than the seaweed net treated water is discharged from the stock solution discharge part. Accordingly, the method further includes an acidity adjustment system for adjusting the acidity of the seaweed net-treated water.

In the present invention, as a sixth solution related to a salinity adjustment device, in the fifth solution, the stock solution discharge part is provided between the winding rolls above the seaweed net treated water, and The generating section is provided above the stock solution discharging section.

In the present invention, as a solution for a box-shaped ship, a method is adopted in which the acid treatment device according to any one of the first to sixth solution means and the ship body are provided.

According to the present invention, it is possible to provide a salinity adjustment device and a box-shaped ship that can adjust the salinity concentration when processing seaweed nets.

FIG. 2 is a front view (a) of an acid treatment apparatus B and a box ship A according to an embodiment of the present invention, and a view (b) of the front view taken along the line X-X. It is an arrow view (b) of the front view of the acid treatment apparatus B and the box-shaped ship A according to one embodiment of the present invention along the Y-Y line. It is a front view (a) and a side view (b) of the bracket 5 in one embodiment of this invention. It is a front view (a) and a longitudinal cross-sectional view (b) of the salt water generation part 3 in one embodiment of this invention. They are a bottom view (a) of a salt water generation unit 3 in an embodiment of the present invention, and a view (b) of the bottom view taken along the Z-Z line. FIG. 2 is a block diagram showing a control configuration of an acid treatment apparatus B and a box ship A according to an embodiment of the present invention.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the box-shaped ship A according to the present embodiment has a main body 1 incorporating an undiluted solution discharge section 2, a salt water generation section 3, and a supply section 4. The raw solution discharge section 2, the salt water generation section 3, and the supply section 4 constitute the acid treatment apparatus B according to the present embodiment, and are devices retrofitted to the ship body 1. This acid treatment device B corresponds to a salt adjustment device according to the present invention.

This box-shaped ship A is used for acid treatment of cultured seaweed at a seaweed cultivation site (culture area). Generally, in seaweed cultivation, the seaweed is grown by attaching it to a long net attached to the culture area in multiple rows, so the material to be treated with acid treatment using box ship A has nori attached to it. It is a seaweed net. Box-shaped ship A performs acid treatment on the seaweed by pulling up such a seaweed net from the aquaculture area and immersing it in acid-treated water. In addition, in FIG. 1 and FIG. 2, a dashed-dotted line is an auxiliary line indicating the center of the ship body 1. Further, the acid-treated water corresponds to the seaweed net-treated water of the present invention.

The ship body 1 has a box-like outer shape with an open upper surface, and has an extremely small depth relative to its vertical and horizontal dimensions. The inside of the ship body 1 is partitioned into three areas in the left-right direction by a pair of partition walls 1a and 1b that extend in the front-rear direction and face each other in parallel with a predetermined distance apart in the left-right direction. Among these three regions, the first region is located at the center in the left-right direction and is the largest region, and is a processing tank R1 in which the acid-treated water S is stored. Note that details of this acid-treated water S will be described later.

Further, the second region and the third region are located on the left and right sides of the processing tank R1, have substantially the same shape, and are spaces that are significantly narrower than the processing tank R1. Of these second and third regions, the second region is an equipment accommodation space R2 in which the supply unit 4 is accommodated, and the third region is an operator accommodation space R3 in which a worker is placed.

The ship body 1 also includes two pairs (four) of take-up rolls 1c to 1f. These take-up rolls 1c to 1f extend in the left-right direction in the processing tank R1 and are provided so as to face each other in parallel at a predetermined distance in the front-rear direction, and take up the seaweed net on each roll. As shown in FIG. 1(a), among the two pairs (four rolls) of winding rolls 1c to 1f, one pair (two rolls) of winding rolls 1c and 1d is on one side with respect to the center in the front-rear direction. The remaining pair (two) of take-up rolls 1e and 1f are provided on the other side with respect to the center in the front-rear direction. One pair (two) of winding rolls 1c and 1d wind and unwind the seaweed net when the box ship A sails in one direction, and the remaining one (two) winding rolls 1e and 1f wind up/unwind the seaweed net when the box ship A sails in the other direction.

Furthermore, this ship body 1 includes a resin sheet 1g extending in the left-right direction at the center in the front-rear direction. This resin sheet 1g is formed in a rectangular shape, and is provided so as to hang down with its upper end (one side) supported. That is, this resin sheet 1g is provided so that its lower end is at a predetermined height from the bottom surface of the processing tank R1. Such a resin sheet 1g suppresses the shaking of the acid-treated water S in the treatment tank R1.

The stock solution discharge section 2 includes a pair of discharge pipes 2a and 2b. Among the pair of discharge pipes 2a and 2b, one discharge pipe 2a is provided so as to extend in the left-right direction on one side of the resin sheet 1g and near the upper end. The other discharge pipe 2b is provided so as to extend in the left-right direction on the other side of the resin sheet 1g and near the upper end.

Such a stock solution discharge part 2 is formed with a plurality of stock solution discharge holes spaced apart from each other by a predetermined interval in the left and right direction, and directs the acid stock solution G supplied from the supply part 4 from each stock solution discharge hole toward the resin sheet 1g. Dispense. This acid stock solution G is, for example, a stock solution of hydrochloric acid or an organic acid, or a diluted solution of the stock solution, and is a liquid having higher acidity than the acid-treated water S. That is, this stock solution discharge part 2 discharges the acid stock solution G, which has a higher acidity than the acid treatment water S, to the acid treatment water S stored in the treatment tank R1.

Here, the acid-treated water S stored in the treatment tank R1 will be explained. In the acid treatment operation, water from the aquaculture area (generally seawater) is sequentially taken into the treatment tank R1 along with the seaweed net. Further, the acid stock solution G flows down the surface of the resin sheet 1g and sequentially flows into the processing tank R1 from the stock solution discharge section 2. That is, the acid-treated water S is a mixed water of the water in the aquaculture area and the acid stock solution G, and has higher acidity than the water in the aquaculture area.

The salt water generation section 3 is a hollow cylindrical body with a bottom, and is provided directly above the stock solution discharge section 2 so as to extend in the left-right direction of the ship body 1 . That is, this salt water generation section 3 is a bottomed cylindrical body provided between the winding rolls 1c, 1d on one side and the winding rolls 1e, 1f on the other side. More precisely, the salt water generation section 3 is a bottomed cylindrical body provided at the center of the ship body 1 in the front-rear direction, and is provided so as to extend in the left-right direction.

Such a salt water generation unit 3 generates salt water K having a higher salt concentration than water in the aquaculture area, and supplies it to the acid-treated water S. This brine K is a liquid having a higher salinity concentration than the aquaculture area, and is prepared from powdered salt E stored in the brine generation section 3 and acid-treated water S separately supplied from the supply section 4 to the brine generation section 3. be done. The powdered salt E is a powdered salt, for example, common salt.

Further, this salt water generating section 3 is fixed to the ship body 1 via a pair of brackets 5 shown in FIG. The bracket 5 includes a fixing flat part 5a and a receiving part 5b as shown in FIG. 3(a), and is provided on each of the partition walls 1a and 1b as shown in FIG. 3(b).

The fixing plane part 5a is a rectangular metal plate, and is fixed to the inner surface (the surface on the processing tank R1 side) of the partition walls 1a and 1b with screws or the like. The receiving part 5b is a rectangular metal plate having a predetermined width and curved into an arc shape according to the curvature of the peripheral surface of the salt water generating part 3, and one end (one curved side) is connected to the fixing flat part 5a. It is welded approximately at the center of the That is, this receiving portion 5b includes an arcuate receiving surface 5c (concave surface) having the same curvature as the circumferential surface of the salt water generating portion 3.

As shown in FIG. 3(b), such a pair of brackets 5 are separated by partition walls so that each receiving portion 5b faces each other at the same height and each arcuate receiving surface 5c faces upward. It is fixed to the inner surfaces (surfaces on the processing tank R1 side) of 1a and 1b. On the other hand, the salt water generating section 3 is placed on the pair of brackets 5 such that the circumferential surface thereof comes into contact with each arcuate receiving surface 5c.

Here, as shown in FIGS. 1(b) and 3(b), the salt water generating section 3 is formed into a pair of circles with a part (lower part) of both ends sandwiched between a pair of partition walls 1a and 1b. It is placed on the arcuate receiving surface 5c. Further, the salt water generating section 3 is installed in a stable state with respect to the ship body 1 because the curvature of the outer circumferential surface is formed to be the same as the curvature of the arcuate receiving surface 5c. In addition, the salt water generating section 3 may not only be placed on the pair of brackets 5, but also may be fixed to the ship body 1 using some kind of fixture.

To explain further, the salt water generation section 3 includes a cylindrical tube 3a, a pair of lids 3b and 3c, a tubular nozzle 3d, and a transparent sheet 3e, as shown in FIGS. 4 and 5. The cylindrical tube 3a is a resin pipe with a predetermined diameter (for example, 25 cm in diameter), and has a notch 3f formed in a part thereof as shown in FIG. 4(a). This notch 3f has an elongated shape extending in the length direction of the cylindrical tube 3a, and functions as an opening for storing the powdered salt E inside the salt water generating section 3, that is, a salt insertion port. Note that this notch also functions as a window for checking the internal state (salt state) of the salt water generating section 3 from the outside.

Among the pair of lids 3b and 3c, one lid 3b is airtightly attached to one end of the cylindrical tube 3a and closes the one end. The other lid 3c is airtightly attached to the other end of the cylindrical tube 3a and closes the other end. That is, the cylindrical tube 3a and the pair of lids 3b and 3c constitute a cylindrical salt container with a bottom as a whole. This salt container is a salt storage section that stores powdered salt E, and stores powdered salt E in substantially the entire region in the longitudinal direction, as shown in FIG. 4(b).

Here, the salt insertion port 3f is located on the upper side when the salt water generation section 3 is placed on the pair of brackets 5. In other words, the acid treatment operator inserts the powdered salt E into the salt water generating section 3 from the salt insertion port 3f located above the salt water generating section 3, so the charging operation is easy. Moreover, since the salt insertion port 3f is located above the salt water generation section 3, it is possible to easily check the state of the powdered salt E.

The tubular nozzle 3d is a hose that extends in the longitudinal direction, that is, from one end to the other end, inside such a salt container, and has discharge holes formed at predetermined intervals in the longitudinal direction. Acid-treated water S is supplied to this tubular nozzle 3d from one end by a supply section 4. Such a tubular nozzle 3d injects the acid-treated water S from above onto the powdered salt E stored in the salt container E, as shown in FIG. 4(b).

The transparent sheet 3e is a rectangular transparent and flexible resin sheet, and as shown in FIGS. 4(a) and 5(a), one linear end (one side) is connected to the cylindrical tube 3a. A gripping member 3g is fixed to the outer circumferential surface of the cylindrical tube 3a in a position parallel to the central axis of the cylindrical tube 3a, and is provided at the other end (on the other side) parallel to and facing the one end. As shown in FIG. 5(b), such a transparent sheet 3e is wrapped around the cylindrical tube 3a to visually block the salt insertion port 3f.

That is, the transparent sheet 3e has a size exceeding the salt insertion opening 3f. Moreover, the fixed position of one end (one side) of the transparent sheet 3e with respect to the cylindrical tube 3a is set so that the entire salt insertion port 3f can be covered. When the acid treatment operator completes charging the powdered salt E into the salt container, he grips the gripping member 3g to wrap the transparent sheet 3e around the salt container, that is, the cylindrical tube 3a, and closes the salt insertion port 3f. Note that the gripping member 3g is a rod-shaped member extending along the other end (other side) of the transparent sheet 3e.

Furthermore, as shown in FIG. 5(a), a plurality of salt water discharge holes 3h are formed in the lower part of the cylindrical tube 3a along the axial direction. These salt water discharge holes 3h are provided discretely from one end of the cylindrical pipe 3a, that is, the salt container to the other end, as shown in the figure, and prevent the acid-treated water S and the powdered salt E dissolved by the injection of the acid-treated water S from being removed. The generated salt water K is dropped toward the treatment tank R1. That is, this salt water K is dripped over substantially the entire area in the left-right direction at the center of the treatment tank R1 in the front-back direction.

That is, in addition to being provided between the take-up rolls 1c and 1d on one side and the take-up rolls 1e and 1f on the other side, the salt water generation section 3 of this embodiment is provided above the stock solution discharge section 2. , is a bottomed cylindrical body extending in the left-right direction of the ship body 1, and is also a bottomed cylindrical body provided with a salt water discharge hole 3h for discharging salt water K at the lower part. Such a salt water generation unit 3 generates salt water K by adding acid-treated water S as water to powdered salt E stored in a salt container.

The supply section 4 is a functional component that supplies the acid stock solution G to the above-mentioned stock solution discharge section 2 and also supplies the acid-treated water S to the brine generation section 3, and as shown in FIG. 6, includes a pH sensor 4a, a stock solution tank, 4b, a stock solution supply pump 4c, a salt sensor 4d, a filter 4e, a processing liquid circulation pump 4f, an operating section 4g, and a control section 4h.

The pH sensor 4a is provided near the bottom of the processing tank R1. This pH sensor 4a detects the pH value (acidity) of the acid-treated water S near the bottom of the treatment tank R1, and outputs the detection result to the control unit 4h as a pH detection signal. The stock solution tank 4b is a liquid container with a predetermined capacity, and is provided in the equipment housing space R2. This stock solution tank 4b stores a predetermined amount of acid stock solution G, and sequentially supplies a part of it to the stock solution supply pump 4c.

The stock solution supply pump 4c is provided in the equipment housing space R2, and pumps out the acid stock solution G from the stock solution tank 4b and supplies it to the stock solution discharge section 2, that is, the pair of discharge pipes 2a and 2b. This stock solution supply pump 4c supplies the stock solution G to the stock solution discharge section 2 based on the first pump control signal inputted from the control section 4h. That is, the supply amount of the acid stock solution G to the stock solution discharge section 2 is controlled by the control section 4h.

The salinity sensor 4d is provided near the bottom of the processing tank R1 similarly to the pH sensor 4a. The salinity sensor 4d detects the salinity concentration of the acid-treated water S near the bottom of the treatment tank R1, and outputs the detection result to the control unit 4h as a salinity detection signal. The filter 4e is provided near the bottom of the treatment tank R1, and prevents solid matter contained in the acid-treated water S from entering.

The treatment liquid circulation pump 4f pumps up the acid-treated water S from the treatment tank R1 via the filter 4e and supplies it to the salt water generation section 3, that is, the tubular nozzle 3d. The treated liquid circulation pump 4f supplies the acid-treated water S to the salt water generation section 3 based on the second pump control signal input from the control section 4h. That is, the supply amount (circulation amount) of the acid-treated water S to the salt water generation section 3 is controlled by the control section 4h.

The operating section 4g is provided in the equipment housing space R2, and is an operating panel that is manually operated by an acid treatment operator. This operation section 4g is for inputting an operator's operation instruction to the control section 4h, and outputs an operation signal indicating the operation instruction to the control section 4h. The control unit 4h is provided in the equipment housing space R2, and performs feedback control of the stock solution supply pump 4c based on the operation signal and the pH detection signal, and controls the processing liquid circulation pump based on the operation signal and the salt detection signal. Feed back control of 4f.

Here, among the above-mentioned stock solution discharge section 2, salt water generation section 3, and control drive section 4, the stock solution discharge section 2 and the supply section 4 correspond to the acidity adjustment system of the present invention. More precisely, the stock solution discharge section 2, the pH sensor 4a in the supply section 4, the stock solution tank 4b, the stock solution supply pump 4c, the operating section 4g, and the control section 4h constitute the acidity adjustment system of this embodiment. . That is, the undiluted solution discharge part 2 and the supply part 4 in this embodiment discharge from the undiluted solution discharge part 2 the acid undiluted solution G which has higher acidity than the acid-treated water S to which seaweed is subjected to acid treatment. The acidity of the acid-treated water S is adjusted by:

Moreover, the salt water generation section 3 and the supply section 4 described above correspond to the salinity adjustment system of the present invention. More precisely, the salt water generation section 3, the salt sensor 4d, the filter 4e, the treatment liquid circulation pump 4f, the operation section 4g, and the control section 4h in the supply section 4 constitute the salinity adjustment system of this embodiment. That is, the salt water generation section 3 and the supply section 4 in this embodiment generate the salt water K having a higher salinity than the seaweed cultivation area and supply it to the acid-treated water S. Adjust the salt concentration of S.

Although not shown, the box ship A is equipped with power equipment that drives and controls the take-up rolls 1c to 1f. This power equipment is housed in the container storage space R2 together with the above-mentioned supply section 4.

Next, the operations of the box ship A and the acid treatment apparatus B according to the present embodiment will be described in detail.
When acid-treating cultured seaweed using box-shaped boat A and acid treatment device B, the operator operates the above-mentioned power equipment while moving box-shaped boat A forward or backward in the aquaculture area. The seaweed net is wound onto one of the winding rolls 1c to 1f.

For example, when moving the box ship A forward to one side in the front-rear direction, the operator winds up the seaweed net around the take-up roll 1d and immerses it in the acid-treated water S in the treatment tank R1. Then, the seaweed net is acid-treated with acid derived from the acid stock solution G contained in the acid-treated water S to exterminate algae and/or prevent diseases.

Here, as the winding roll 1d sequentially winds up the seaweed net, water from the aquaculture area is taken into the treatment tank R1 along with the seaweed net. The acidity of the acid-treated water S tends to decrease due to this water, but the acidity adjustment system of the acid treatment device B, that is, the functioning of the stock solution discharge section 2 and the supply section 4, prevents the decrease in acidity. Prevented.

That is, in the acidity adjustment system of the acid treatment apparatus B according to the present embodiment, the pH sensor 4a of the supply section 4 detects a decrease in the acidity of the acid-treated water S, and this detection result is sent to the control section 4h as a pH detection signal. is input. In response to this pH detection signal, the control unit 4h operates the stock solution supply pump 4c to pump out the acid stock solution G from the stock solution tank 4b and supply it to the stock solution discharge section 2 (a pair of discharge pipes 2a, 2b). The acid stock solution G is discharged from the stock solution discharge section 2 into the processing tank R1. As a result, the acidity of the acid-treated water S increases and maintains the desired pH value.

Moreover, in the acid treatment apparatus B according to the present embodiment, a salinity adjustment system functions in addition to such an acidity adjustment system. That is, in this salinity adjustment system, the salinity sensor 4d of the supply section 4 detects the salinity concentration of the acid-treated water S, and the detection result is inputted to the control section 4h as a salinity detection signal. In response to this salinity detection signal, the control unit 4h operates the processing liquid circulation pump 4f to draw up the acid-treated water S from the processing tank R1 and supply it to the salt water generation unit 3 (tubular nozzle 3d).

As a result, in the salt water generation section 3, the acid-treated water S is injected from the tubular nozzle 3d onto the powdered salt E, and a salt water K in which the powdered salt E dissolved in the acid-treated water S is mixed is generated. This salt water K is dripped from the salt water discharge hole 3h of the salt water generation section 3 toward the processing tank R1. As a result, the salinity of the acid-treated water S is maintained at a desired salinity that is higher than the salinity of water (seawater) in the aquaculture area. Note that the desired degree of salinity is, for example, 4% to 9%.

According to this embodiment, the acid treatment device B includes a salinity adjustment system in addition to the acidity adjustment system, so that the salinity concentration when acid-treating the seaweed net is adjusted to the salinity concentration of the water (seawater) in the aquaculture area. It is possible to adjust to a high salinity concentration higher than the above. In other words, according to this embodiment, it is possible to apply acid to the seaweed net in a state where the osmotic pressure is increased due to the high salinity concentration, so that it is possible to exterminate algae compared to the normal salinity concentration in the aquaculture area. and disease prevention can be carried out more efficiently.

Note that the present invention is not limited to the above-described embodiment, and for example, the following modifications can be considered.
(1) The most important feature of the present invention is that the salt water generating section 3 is provided between at least a pair of take-up rolls in the box ship A (for example, at the center in the front-rear direction). can be changed as necessary. For example, the detailed configuration of the salt water generation section 3 is not limited to the above embodiment.

(2) In the embodiment described above, the salt water generating section 3 has a cylindrical shape with a bottom (bottomed cylindrical body), but the shape of the salt water generating section 3 is not limited to this. The salt water generation unit 3 may be a bottomed cylinder having various cross-sectional shapes, for example, it may be a bottomed polygonal cylinder whose cross-sectional shape in the direction orthogonal to the central axis is a polygon (bottomed polygonal cylinder). good. In this case, it is placed in the center of the ship body 1 with the portion corresponding to the apex of the polygon being the lowest position, and the salt water K is dripped from the salt water discharge hole formed at the apex.

(3) In the above embodiment, the salt water K is prepared by storing the powdered salt E in the salt water generating section 3 and injecting the acid-treated water S onto the powdered salt E from above, but the present invention is not limited to this. . For example, high salinity water having a higher salinity than water in the aquaculture area (seawater) may be stored in the salt water generation section 3, and this high salinity water may be dripped into the acid-treated water S in the treatment tank R1. In this case, a supply device (for example, an on-off valve) for adjusting the dripping amount of high-salinity water is required, but it is possible to omit the filter 4e and the treated liquid circulation pump 4f.

(4) In the above embodiment, the resin sheet 1g is provided in the salt water generation section 3, but the present invention is not limited to this. That is, the resin sheet 1g may be omitted if necessary.

(5) In the above embodiment, the salt water K is dripped from the salt water discharge hole 3h toward the processing tank R1. That is, the salt water generation unit 3 is supplied to the acid-treated water S of the treatment tank R near the supply location of the acid stock solution G, that is, to a location where the salt water K does not come into direct contact with the seaweed net. but not limited to.

The salt water K is a mixture of dissolved powdered salt E and acid-treated water S, and even if it is directly injected onto the seaweed net, it causes less damage to the seaweed than the acid stock solution G. Considering this point, the salt water K may be supplied to the acid-treated water S in the treatment tank R to a place where the salt water K directly adheres to the seaweed net. That is, in the present invention, the place where the salt water K is supplied is not particularly limited, but a place where the salt water K does not come into direct contact with the seaweed net is more preferable.

(6) In the above embodiment, the salt water K was dropped from above the acid-treated water S in the treatment tank R, but the present invention is not limited thereto. For example, the salt water K discharged from the salt water discharge hole 3h may be introduced into the acid-treated water S through a predetermined conduit, and the salt water K may be supplied into the acid-treated water S from the lower end of the conduit.

(7) Although the above embodiment describes the adjustment of the salt concentration when acid-treating the seaweed net, the present invention is not limited thereto. That is, the present invention is applicable to salt concentration adjustment other than salt concentration adjustment when performing acid treatment on seaweed nets. For example, the present invention is applicable to cases where seaweed nets are treated only with high-salinity water.

A Box ship B Acid treatment equipment (salt adjustment equipment)
E Powdered salt K Salt water R1 Treatment tank R2 Equipment housing space R3 Worker housing space S Acid treated water (seaweed net treated water)
1 Ship body 1a, 1b Section bulkhead 1c to 1f Take-up roll 1g Resin sheet 2 Raw solution discharge section 3 Salt water generation section 3a Cylindrical tube 3b, 3c Lid 3d Tubular nozzle 3e Transparent sheet 3f Notch (salt insertion port)
3g Gripping member 3h Salt water discharge hole 4 Supply section 4a pH sensor 4b Stock solution tank 4c Stock solution supply pump 4d Salinity sensor 4e Filter 4f Processing liquid circulation pump 4g Operation section 4h Control section 5 Bracket 5a Fixing flat section 5b Receiving section

Claims (7)

a salt water generation unit that generates salt water with a higher salinity than the seaweed cultivation area ;
a supply unit that adjusts the salt concentration of the seaweed net-treated water by supplying the salt water to the seaweed net-treated water,
The salt water generation unit is provided between the winding rolls in a ship body that is provided with at least one pair of winding rolls in the front and back direction for winding up the seaweed net with the seaweed attached thereto, and storing the seaweed net treated water. A salinity adjustment device featuring: The salt water generator according to claim 1, wherein the salt water generating section is a cylinder body with a bottom that extends in the left-right direction of the ship body, and a salt water discharge hole for discharging the salt water is provided in the lower part. Adjustment device. 3. The salinity adjusting device according to claim 1, wherein the salt water generation section includes a salt storage section that accommodates powdered salt , and a nozzle that adds moisture to the powdered salt. 4. The salinity adjusting device according to claim 3, wherein the supply section draws the seaweed net treated water and supplies it to the salt storage section as water. Claims 1 to 4 further comprising an acidity adjustment system that adjusts the acidity of the seaweed net-treated water by discharging an acid stock solution having higher acidity than the seaweed net-treated water from a stock solution discharge portion. The salinity adjustment device according to any one of the above. 6. The stock solution discharge section is provided between the winding rolls above the seaweed net treated water, and the salt water generation section is provided above the stock solution discharge section. Salinity adjustment device. A salinity adjusting device according to any one of claims 1 to 6,
A box-shaped ship characterized by comprising the above-mentioned ship body.

Images