KR102370466B1 - Automatic operation method of seawater desalination device for seawater desalination vessel - Google Patents

Abstract

The present invention comprises the steps of: confirming a current location of a ship using location information of the ship; when it is confirmed that the current location of the ship is at a preset location, checking the water level of the production water tank of the seawater desalination device mounted on the ship; and operating the seawater desalination device so that the seawater desalination device produces fresh water when the water level of the production water tank is less than a preset maximum water level; it's about

Description

Automatic operation method of seawater desalination device for seawater desalination vessel

The present invention relates to an automatic operation method of a seawater desalination device mounted on a seawater desalination vessel for supplying freshwater to islands and coastal regions by producing freshwater while operating the sea.

Recently, due to climate change, regional and seasonal water shortages are seriously occurring. For example, when a drought occurs, a serious water shortage will occur in a specific area, and in particular, a bigger problem may occur in islands and coastal areas where water supply is weak.

In addition, depending on the occurrence of natural disasters or disasters such as earthquakes and flooding, there is a possibility that water supply may be interrupted, and there is a risk of emergency situations in which water supply is limited due to artificial disasters such as terrorism.

As awareness about water security increases and the cost of building existing onshore desalination plants increases, there is a movement to build a mobile seawater desalination system equipped with a seawater desalination system on a ship instead of building a seawater desalination plant on land.

In order to operate such a mobile desalination system, manpower required to operate or manage the seawater desalination device mounted on the ship is required. The situation is that As the operation and management personnel are boarded on the ship, not only separate maritime training is required, but as the number of seawater desalination ships in operation increases, management personnel on board are also required to respond accordingly. There is a problem that lowers the efficiency.

Laid-Open Patent Publication No. 10-2006-0123444 (2006.12.01)

The present invention is to solve the above problems, and it is to provide an automatic operation method of a seawater desalination device that enables unmanned operation of the seawater desalination device without onboard the operation and management personnel of the seawater desalination device on a seawater desalination vessel. make it a technical task.

According to an embodiment of the present invention, the method comprising: confirming a current location of a ship using location information of the ship; when it is confirmed that the current location of the ship is at a preset location, checking the water level of the production water tank of the seawater desalination device mounted on the ship; and operating the seawater desalination device so that the seawater desalination device produces fresh water when the water level in the production water tank is less than a preset maximum water level; provided

In addition, the step of confirming the current location of the ship may be set to confirm the area in which the ship is located among the first area in which the ship is anchored, the second area in which the ship is moving, and the third area around the freshwater supply point. can

In addition, the first to third regions may be preset based on the operation plan of the seawater desalination vessel, sea map data, and geographic data of an anchorage and a freshwater supply site.

In addition, the preset location includes the first and second zones, and when the current location of the vessel corresponds to the third zone, it may be set to stop the production of fresh water.

In addition, when the current location of the ship corresponds to the first zone or the second zone, the production load of the seawater desalination apparatus may be varied and set according to the water level of the production water tank and the arrival time to the freshwater supply point.

In addition, when the current location of the ship corresponds to the first region, checking the water level of the concentrated water tank provided in the seawater desalination device; and discharging the concentrated water of the concentrated water tank to the outside of the vessel when the water level of the concentrated water tank reaches a preset highest water level; may be additionally performed.

In addition, when the current location of the vessel corresponds to the second region, discharging the concentrated water of the seawater desalination device until it reaches a predetermined lowest water level in the concentrated water tank; may be additionally performed.

In addition, when the current location of the vessel corresponds to the third region, it may be set to stop the freshwater production and concentrated water discharge of the seawater desalination device.

In addition, checking at least one of the operating pressure of the reverse osmosis membrane separation unit of the seawater desalination device, the differential pressure, and the produced water TDS; when at least one of the operating pressure, the differential pressure, and the production water TDS exceeds a preset reference value, checking whether a pump or a measuring instrument has an error; and when it is determined that the error check result is normal, stopping freshwater production and performing a membrane washing process; may be additionally performed.

In addition, if at least one of the operating pressure, differential pressure, and production water TDS exceeds a preset reference value even after performing the membrane cleaning process for a preset number of times, performing the chemical cleaning process; may be additionally performed .

In addition, if at least one of the operating pressure, differential pressure, and TDS of the produced water exceeds a preset reference value even after the chemical cleaning process is performed, stopping the production of fresh water and circulating the produced water at a low pressure; may be additionally performed .

In addition, before confirming the current location of the ship, receiving information on whether maintenance of the ship is required; may be additionally performed. When maintenance of the ship is not required, the current location of the ship It can be set to check.

In addition, when maintenance of the vessel is required, performing chemical cleaning of the reverse osmosis membrane module of the seawater desalination device; Filling the preservation solution in the reverse osmosis membrane module and stopping the operation of the seawater desalination device; may be additionally performed.

According to an embodiment of the present invention, by automatically turning on/off the desalination production operation of the seawater desalination device using the location information of the ship and the production water of the seawater desalination device and the water level information of the concentrated water tank, the It has the effect of enabling the unmanned automatic operation of the desalination device.

In addition, according to an embodiment of the present invention, by automatically controlling the freshwater production to be made on the berth or the movement path of the ship, and to stop the freshwater production in the vicinity of the freshwater supply site such as an island or coastal area, the membrane life is increased and It has the advantage of improving the efficiency of freshwater production.

In addition, according to an embodiment of the present invention, it is possible to minimize the effect of the concentrated water discharge on the water quality of the sea by stopping or automatically limiting the discharge of concentrated water at a freshwater supply site or an anchorage.

Furthermore, according to an embodiment of the present invention, there is an advantage in providing an automatic operation method for automatically checking the cause of a problem when the desalination production performance of the seawater desalination device is deteriorated, and automatically taking measures therefor.

1 is a block diagram of a seawater desalination vessel according to an embodiment of the present invention.
2 is a view showing a longitudinal section and an operating state of a seawater desalination vessel according to an embodiment of the present invention.
3 is a conceptual diagram showing the location of a seawater desalination vessel divided into a plurality of regions in relation to the automatic operation method of the seawater desalination apparatus of the present invention.
4 is a flowchart illustrating an automatic operation method of a seawater desalination apparatus for a seawater desalination vessel according to an embodiment of the present invention.
5 is a flowchart illustrating an automatic operation method of the seawater desalination device that can be performed in addition to the method shown in FIG. 4 .
6 is a flowchart illustrating an automatic operation method of the seawater desalination device according to whether there is a need for ship maintenance.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, an embodiment of an automatic operation method of a seawater desalination apparatus for a seawater desalination vessel according to the present invention will be described in detail with reference to the accompanying drawings, in which the same or corresponding components are the same drawings Numbers are given and overlapping descriptions thereof will be omitted.

1 is a block diagram of a seawater desalination vessel according to an embodiment of the present invention, and FIG. 2 is a view showing a longitudinal section and an operating state of the seawater desalination vessel according to an embodiment of the present invention.

1 and 2 , the seawater desalination vessel according to the present embodiment includes a vessel body 10 , a water supply unit 20 , and a seawater desalination device 30 .

The ship body 10 constitutes the exterior of the seawater desalination vessel, and for example, a deck is provided between the bow 11 and the stern 12, and the seawater desalination device 30 is accommodated in the lower space of the deck. A space may be created for

The water supply unit 20 is for supplying seawater into the ship body 10, and for sucking seawater through the water supply passage 21 and the water supply passage 21 formed in the ship body 10 as in this embodiment. It may include a suction pump (not shown).

The seawater desalination device 30 is installed in the ship body 10, desalinates the seawater supplied through the water supply unit 20 and supplies it to land (eg, islands and coastal areas where water supply is weak). According to this embodiment, the seawater desalination device 30 is installed in the space below the deck of the ship body 10 .

The seawater desalination device 30 includes a pretreatment unit 31 for pretreating and filtering seawater, a reverse osmosis membrane separation unit 32 for filtering seawater that has passed through the pretreatment unit 31 through a reverse osmosis membrane, and a reverse osmosis membrane separation unit 32 . It includes a production water tank 33 for storing the produced production water, and a concentrated water tank 34 for storing the concentrated water generated in the production process of the production water.

A UF membrane (Ultra-filtration membrane) or MF membrane (Micro-filtration membrane) may be used as the pretreatment unit 31, and the pretreatment unit 31 may be connected to a pretreatment filtrate tank 41 for storing the pretreatment filtrated water. .

The reverse osmosis membrane separation unit 32 may be connected to a drain line of the pre-treated filtrate tank 34 , and a transfer pump 39 for transferring the filtered water may be installed in the drain line. A high-pressure pump 35 for providing pressure to seawater may be installed at the tip of the reverse osmosis separation unit 32 , and a safety filter 36 may be installed at the tip of the high-pressure pump 35 . An energy recovery unit (37) for recovering energy using the pressure of the concentrated water is installed in the concentrated water drain line of the reverse osmosis membrane separation unit (32). A booster pump 38 may be installed between the energy recovery unit 37 and the raw water supply line of the reverse osmosis membrane separation unit 32 .

The production water tank 33 is connected to the production water drainage line of the reverse osmosis membrane separation unit 32 , and stores the product water produced by the filtration action of the reverse osmosis membrane separation unit 32 . A fresh water supply line for supplying fresh water to the land is connected to the production water tank 33 .

The concentrated water tank 34 is connected to the concentrated water drain line of the reverse osmosis membrane separation unit 32, and functions to store concentrated water, which is a by-product generated in the seawater desalination process. A concentrated water discharge line for discharging concentrated water to the outside of the ship body 10 may be connected to the concentrated water tank 34 .

Each component of the seawater desalination device 30, specifically, components controllable by an electrical signal, for example, various pumps, valves, and other various sensors and actuators, etc. are controlled by the control unit 40 . In particular, in connection with the present invention, the control unit 40 automatically controls the operation of the seawater desalination device 30 , for example, a fresh water production operation, a concentrated water discharge operation, a fresh water supply operation, a washing and a washing operation, and the seawater desalination apparatus (30) to enable unmanned operation.

Meanwhile, the pretreatment unit 31 , the reverse osmosis membrane separation unit 32 , the production water tank 33 , and the concentrated water tank 34 may be installed in the lower space of the deck provided in the ship body 10 .

Specifically, as shown in FIG. 2 , the pretreatment unit 31 is disposed in any one of the left and right spaces based on the central portion of the ship body 10 , and the reverse osmosis membrane separation unit 32 is located in the left and right spaces of the space. The other may be disposed to face the pre-treatment unit 31 .

In the case of the production water tank 33 and the concentrated water tank 34, at least one of them is first tanks 33a, 34a and second tanks 33b, 34b in the left and right spaces of the ship body 10 as They may be arranged in pairs. In this embodiment, the production water tank 33 and the concentrated water tank 34 are both installed as a pair of left and right, and these are the first production water tank 33a, the second production water tank 33b, and the first Concentrated water tank (34a), may be referred to as a second concentrated water tank (34b). Furthermore, the pre-filtered water tank 41 may also be divided left and right into the first pre-filtered water tank 41a and the second pre-treated filtered water tank 41b.

On the other hand, on the outside of the first production water tank (33a), the second production water tank (33b), the first concentrated water tank (34a), the second concentrated water tank (34b) for storing ballast water for balancing of the vessel. A ballast tank may be arranged.

Hereinafter, when explaining the operating state of the multifunctional seawater desalination vessel related to the present embodiment, seawater (raw water) may be taken in through the water supply unit 20 as shown in FIG.

As shown in (b) of Figure 2, seawater is pre-treated (eg, ultra-filtration treatment) through the pre-treatment unit 31, and the pre-filtered water that has passed through the pre-treatment unit 31 is stored in the pre-treated filtrate tanks 41a and 41b. is saved

And, as shown in (c) of FIG. 2, the pre-treated filtered water is supplied to the reverse osmosis membrane separation unit 32 to perform the reverse osmosis membrane separation process, and as shown in (d), the produced water is in the first and second production water tanks 33a , 33b), the concentrated water is supplied to the first and second concentrated water tanks (34a. 34b).

Figure 2 (e) is a process of unloading the production water of the first and second production water tanks (33a, 33b) to land, and the concentrated water of the first and second concentrated water tanks (34a, 34b) at sea, etc. The process of discharging to the outside of the ship body 10 is shown. Also, (f) of FIG. 2 shows the process of washing the pretreatment unit 31 and the reverse osmosis membrane separation unit 32. In this case, the pretreatment unit 31 using the filtered water (or produced water) of the pretreatment filtrate tank 41 ) and the reverse osmosis membrane separation unit 32 may be backwashed and then introduced into the concentrated water tanks 34a and 34b.

3 is a conceptual diagram showing the position of the seawater desalination vessel divided into a plurality of regions in relation to the automatic operation method of the seawater desalination apparatus of the present invention.

3, in the present invention, the sea map is divided into first to third regions (1, 2, 3) based on the operation plan of the seawater desalination vessel.

The first zone (1) corresponds to the marina where the seawater desalination vessel is anchored or the area adjacent thereto, where the marina includes both an onshore marina such as a port and an offshore marina where a vessel can anchor at sea without entering the land. do. The first area 1 can be set within a radius of a predetermined distance from the coordinates of the marina.

The second region 2 corresponds to a region including a movement path in which a seawater desalination vessel departs from an anchorage and moves toward a freshwater supply site such as an island or a coastal region.

The third zone (3) corresponds to a freshwater supply site and an area adjacent thereto, such as islands and coastal areas to which freshwater is supplied. The third zone can be set within a radius of a preset distance from the coordinates of the freshwater supply point, and in this case, it can be set in consideration of the water depth data obtained from the sea map data. In addition, the second region (2)) can be set as an area excluding the first region (1) and the second region (2) from the navigation route shown in the operation plan of the seawater desalination vessel.

In this way, the first to third regions (1, 2, 3) may be set in advance based on the operation plan of the seawater desalination vessel, sea map data, geographic data of anchorages and freshwater supply sites, etc., and such region information is It is stored in a storage means such as a memory provided in the seawater desalination device. The control unit 40 performs automatic control of the seawater desalination device 30 by utilizing such region information as will be described below.

4 is a flowchart illustrating an automatic operation method of a seawater desalination apparatus for a seawater desalination vessel according to an embodiment of the present invention.

Referring to FIG. 4 , the automatic operation method of the seawater desalination apparatus will be described. First, the control unit 40 checks the current position of the vessel using the position information of the vessel ( S10 ). The seawater desalination device 30 may be connected to a control means of the vessel to receive GPS information of the vessel 10 in real time. The control unit 40 identifies a region in which the vessel is currently located among the first region 1 , the second region 2 , and the third region 3 using the position information of the vessel.

Next, when the current position of the vessel corresponds to a preset position, the control unit 40 checks the water level of the production water tank 33 of the seawater desalination device 30 ( S13 ).

According to the present embodiment, the preset location includes a first area (1) and a second area (1). That is, when the current position of the vessel corresponds to the first region (1) (S11) or corresponds to the second region (2), the water level of the production water tank 33 is checked, which is the production water tank 33 It can be checked through the water level sensor (level sensor) installed in the

Next, when the water level in the production water tank 33 is less than the preset maximum water level, the control unit 40 operates the seawater desalination device 30 so that the seawater desalination device 30 produces fresh water (S24). ).

In this case, the control unit 40 may vary and set the production load of the seawater desalination device 30 according to the water level of the production water tank 33 and the arrival time to the freshwater supply point. For example, when the production time for fresh water from the production water tank 33 is empty to the fresh water supply point is insufficient, the seawater desalination device 30 is operated to produce fresh water by increasing the load up to 1.5 times the basic production load. can do it

When the water level in the production water tank 33 corresponds to a preset highest water level (eg, full water level), the control unit 40 controls the seawater desalination device 30 to stop the desalination device 30 from producing fresh water. control (S15). And after stopping the production of fresh water, the raw water is circulated at a low pressure to prevent contamination of the membrane module of the reverse osmosis membrane separation unit 32 (S16). In this case, the raw water supplied to the reverse osmosis membrane separation unit 32 is discharged to the concentrated water discharge line without passing through the membrane module. To this end, the raw water inflow flow rate of the reverse osmosis membrane separation unit 32 may be set to 1.5 times the inflow flow rate during filtration.

When the current location of the vessel corresponds to the third region 3 (S17), the control unit 40 causes the seawater desalination device 30 to stop the production of fresh water (S18). The third area (3) near the freshwater supply site is a land area, and the water quality of the area is generally not as good as the water quality of the first and second areas (1, 2). When desalination is performed using seawater of poor quality as described above, the membrane life of the pretreatment unit 31 or the reverse osmosis membrane separation unit 32 can be reduced. In this case, the control unit 40 controls the seawater desalination device 30 to stop the freshwater production operation including the water supply operation (S18). As described above, as the freshwater production is stopped, the raw water can be circulated at a low pressure to prevent contamination of the membrane module (S19).

And, since the discharge of concentrated water may adversely affect the water quality of the corresponding area, the control unit 40 controls the operation of the seawater desalination device 30 to also stop the discharge of concentrated water (S20).

If the current position of the vessel corresponds to the fresh water supply point in the third region 3 (S21), the control unit 40 performs the same operation as the control operation in the third region 3 described above (S18, S19, S20). ), but a fresh water supply operation to the fresh water supply site is additionally performed (S22).

On the other hand, when the position of the vessel corresponds to the second region 2 ( S12 ), the control unit 40 controls the seawater desalination device 30 so that the concentrated water in the concentrated water tank 34 is discharged. When the ship is moving in the second area 2, the concentrated water discharged from the ship body 1 is evenly distributed in the seawater by the airflow by the propeller operation of the ship, so that the concentrated water discharge does not significantly affect the water quality. Bar, concentrated water is discharged to the maximum without limiting the amount of discharge.

The water level of the concentrated water tank 34 is checked while discharging the concentrated water, and when the predetermined lowest water level of the concentrated water tank 34 is reached (S24), the discharge of the concentrated water is stopped (S25). The level of the concentrated water tank 34 can be checked through a water level sensor (level sensor) as in the case of the production water tank 33 .

On the other hand, when the position of the vessel corresponds to the first region (1) (S11), the water level of the concentrated water tank 34 is checked (S26), and the water level of the concentrated water tank 34 reaches the preset highest water level In one case, the concentrated water in the concentrated water tank 34 is discharged to the outside of the vessel (S27). When the water level of the concentrated water tank 34 is out of the highest water level by less than the preset highest water level, the discharge of the concentrated water is stopped (S28). Such an operation is to minimize the discharge of concentrated water as long as the concentrated water tank 34 is not full, since the vessel is stopped at the anchorage, so that the distribution of concentrated water is not performed well when the concentrated water is discharged.

5 is a flowchart illustrating an automatic operation method of the seawater desalination apparatus that can be performed in addition to the method shown in FIG. 4 .

5, when the ship is located in the first zone (1) or the second zone (2) and the seawater desalination device 30 produces fresh water (S14), the control unit 40 is a reverse osmosis membrane separation unit ( 32), at least one of the operating pressure, differential pressure, and total dissolved solids (TDS) of the production water is checked (S29). These can be measured through measuring instruments such as a pressure gauge installed in the water supply line and the drain line of the reverse osmosis membrane separation unit 32 and a conductivity meter installed in the drain line.

When at least one of the operating pressure, the differential pressure, and the production water TDS exceeds a preset reference value, it is checked whether the pump 35 or the measuring instrument has an error (S30). When the power consumption of the pump 35 or the measured value of the meter is measured as 0 for a certain period or the change rate is higher than a preset value, it may be determined that there is an abnormality in the pump 35 or the meter.

If there is an error in the pump 35 or the meter, since there is no abnormality in the reverse osmosis membrane separation unit 32, a maintenance alarm for the seawater desalination device 30 is generated (S31). In this case, when the ship moves to the port later, the maintenance of the seawater desalination device 30 is performed (S32).

On the other hand, if it is determined as normal as a result of checking the error on the pump 35 or the meter, the desalination device 30 is controlled to stop the production of fresh water and perform the membrane washing process (S33). This may be performed by backwashing the reverse osmosis membrane separation unit 32 using concentrated water (or pre-treated filtered water).

After the membrane washing process, fresh water production is made again (S34), and at least one of the operating pressure of the reverse osmosis membrane separation unit 32, the differential pressure, and the produced water TDS is checked again (S35). As a result, when at least one of the operating pressure, differential pressure, and produced water TDS exceeds the preset reference value, it is checked whether the pump 35 or the measuring instrument has an error (S30), and the result for the seawater desalination device 30 is The process of generating a maintenance alarm (S31) or allowing the membrane cleaning process to be performed (S33) is re-performed.

If at least one of the operating pressure, differential pressure, and TDS of produced water exceeds a preset reference value even after the membrane washing process is performed for a preset number of times, fresh water production is stopped and the chemical washing process is performed (S37). To this end, after checking the error of the pump 35 or the meter (S30, S36), the process of checking the number of times of the membrane washing process (S38) may be performed. As a result of checking the number of membrane washing processes, if the preset number (eg, 7 times in a week) is exceeded, the seawater desalination device 30 is controlled so that chemical cleaning is performed. The chemical waste liquid used for cleaning chemicals can be stored in a separately provided waste liquid storage tank and returned to land, treated and disposed of.

After the chemical cleaning process is performed, fresh water is produced (S39), and at least one of the operating pressure, the differential pressure, and the produced water TDS of the reverse osmosis membrane separation unit 32 is checked again (S40).

Even after performing the chemical cleaning process, if at least one of the operating pressure, the differential pressure, and the produced water TDS exceeds a preset reference value, the fresh water production is stopped (S41). Since the problem has not been solved even after the chemical cleaning process, it is considered that maintenance and repair of the seawater desalination device 30 is necessary, so that the production of fresh water is stopped. Then, the produced water is circulated at a low pressure to prevent contamination of the membrane module of the reverse osmosis membrane separation unit 32 according to the stop of freshwater production (S42).

Next, after checking whether or not the water level of the concentrated water tank 34 has reached a predetermined lowest water level (S43), it is checked whether the current position of the vessel is in the second area (2) (S44). If the concentrated water tank 34 is filled over a certain amount and the position of the vessel is in the second region 2, the concentrated water is discharged (S45). If not, the discharge of concentrated water is stopped (S46). Thereafter, a maintenance alarm for the seawater desalination device 30 is generated (S31).

6 is a flowchart illustrating an automatic operation method of the seawater desalination apparatus according to whether there is a need for ship maintenance.

As shown in FIG. 6 , before confirming the current location of the ship ( S10 , see FIG. 4 ), a process of receiving information on whether maintenance of the ship is required ( S50 ) may be performed. Whether or not maintenance and repair of a ship is necessary is generally determined by the captain of the ship, and when it is determined that maintenance of the ship is necessary, the ship moves to a port on land for maintenance. In this case, since there is no need to produce fresh water, it is necessary to stop the operation of the seawater desalination device 30 .

When the captain determines that maintenance such as maintenance of the ship is necessary, information on switching to the maintenance mode of the ship through a control switch or the like may be input to the seawater desalination device 30 .

When maintenance of the vessel is not required, the process related to the operating method of the seawater desalination device 30 described with reference to FIGS. 4 and 5 is performed.

When maintenance of the ship is required (S51), for example, when a switch signal to the ship maintenance mode is received, the control unit 40 operates the seawater desalination device 30 to perform chemical cleaning (S52) ) And, the preservation solution is filled inside the membrane module of the reverse osmosis membrane separation unit 32 (S53), and the operation of the seawater desalination device 30 is stopped (S54).

Next, it is checked whether the water level of the concentrated water tank 34 has reached a preset lowest water level (S55), and then it is checked whether the current position of the vessel is in the second area (2) (S56). If the concentrated water tank 34 is filled over a certain amount and the position of the vessel is in the second region 2, the concentrated water is discharged (S57). If not, the discharge of concentrated water is stopped (S58). When the ship moves to the port later, maintenance of the ship, such as repair of the ship, is performed (S59).

Although the above has been described with reference to specific embodiments of the present invention, those of ordinary skill in the art may vary the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. It will be understood that modifications and changes can be made to

1: Zone 1 2: Zone 2
3: Zone 3 10: Ship body
11: fore part 12: stern part
20: water supply unit 30: seawater desalination device
31: pretreatment unit 32: reverse osmosis membrane separation unit
33: production water tank 33a: first production water tank
33b: second production water tank 34: concentrated water tank
34a: first concentrated water tank 34b: second concentrated water tank
35: high pressure pump 36: safety filter
37: energy recovery unit 38: booster pump
39: transfer pump 40: control unit

Claims (13)

checking the current location of the ship by using the location information of the ship;
when it is confirmed that the current location of the ship is at a preset location, checking the water level of the production water tank of the seawater desalination device mounted on the ship; and
When the water level of the production water tank is less than a preset maximum water level, operating the seawater desalination device so that the seawater desalination device produces fresh water;
The step of confirming the current position of the vessel,
It is set to check the area in which the ship is located among the first area in which the ship is anchored, the second area in which the ship is moving, and the third area around the freshwater supply point,
The first to third regions are characterized in that the seawater desalination vessel is set in advance based on the operation plan, sea map data, and geographic data of the anchorage and the freshwater supply area. Seawater desalination Automatic operation method of seawater desalination equipment for ships.
delete delete According to claim 1,
The preset location includes first and second districts,
When the current location of the ship corresponds to the third region, the automatic operation method of the seawater desalination apparatus for seawater desalination, characterized in that the production of fresh water is stopped.
According to claim 1,
When the current location of the ship corresponds to the first zone or the second zone, the production load of the seawater desalination device is set by varying the water level of the production water tank and the arrival time to the freshwater supply point. , automatic operation method of seawater desalination device for seawater desalination vessel.
According to claim 1,
checking the water level of the concentrated water tank provided in the seawater desalination device when the current location of the vessel corresponds to the first region; and
When the water level of the concentrated water tank reaches a preset highest water level, discharging the concentrated water of the concentrated water tank to the outside of the ship; How to drive.
According to claim 1,
When the current position of the vessel corresponds to the second region, discharging the concentrated water of the seawater desalination device until it reaches a preset lowest water level in the concentrated water tank; Seawater desalination, characterized in that it further comprises Automatic operation method of seawater desalination device for ships.
According to claim 1,
When the current location of the vessel corresponds to the third region, the method for automatically operating a seawater desalination device for seawater desalination vessel, characterized in that it is set to stop the freshwater production and concentrated water discharge of the seawater desalination device.
According to claim 1,
checking at least one of an operating pressure of a reverse osmosis membrane separation unit of the seawater desalination device, a differential pressure, and a TDS of produced water;
When at least one of the operating pressure, the differential pressure, and the production water TDS exceeds a preset reference value, checking whether there is an error in the pump or the measuring instrument; and
When it is determined that the error check result is normal, stopping the freshwater production and performing a membrane washing process; Seawater desalination The automatic operation method of a seawater desalination apparatus for a vessel, characterized in that it further comprises.
10. The method of claim 9,
When at least one of the operating pressure, differential pressure, and production water TDS exceeds a preset reference value even after performing the membrane cleaning process for a preset number of times, performing a chemical cleaning process; characterized by further comprising: Seawater desalination Automatic operation method of seawater desalination equipment for ships.
11. The method of claim 10,
When at least one of the operating pressure, the differential pressure, and the produced water TDS exceeds a preset reference value even after the chemical cleaning process is performed, stopping the fresh water production and circulating the produced water at low pressure; characterized in that it further comprises, Seawater desalination Automatic operation method of seawater desalination equipment for ships.
According to claim 1,
Further comprising; before confirming the current location of the ship, receiving information on whether the ship needs maintenance or not;
When the maintenance of the vessel is not required, the automatic operation method of the seawater desalination apparatus for seawater desalination vessel, characterized in that it is set to check the current position of the vessel.
13. The method of claim 12,
performing chemical cleaning of the reverse osmosis membrane module of the seawater desalination device when maintenance of the vessel is required; and
Filling the preservation solution in the reverse osmosis membrane module, and stopping the operation of the seawater desalination device; automatic operation method of the seawater desalination device for a seawater desalination vessel, characterized in that it further comprises a.

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