JP2013023187A - Ballast water treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ballast water treatment apparatus which reliably and efficiently performs treatment for making ballast water harmless.SOLUTION: The ballast water treatment apparatus sterilizes water microorganism by irradiating taken water to be treated with ultraviolet light, and stores the treated water in a ballast tank, and includes on a ballast water treatment line 1, a pump 2 to pump and pressure-feed water to be treated, a filter 3, an ultraviolet light irradiation unit 4 to irradiate the pumped water to be treated with ultraviolet light, an ultraviolet light irradiation sensor 5 to detect the illuminance of an ultraviolet light lamp of an ultraviolet light irradiation unit 4, a ballast tank 6 for storing the water treated by being irradiated with the ultraviolet light, and an outboard water discharge means 7, The ballast water treatment apparatus further includes a control means 8 which discharges the water to be treated outboard by the outboard water discharge means 7 until the illuminance of the ultraviolet light lamp detected by the ultraviolet light irradiation sensor 5 reaches the predetermined value while passing the water to be treated, and pours the water into the ballast tank 6 when the illuminance of the ultraviolet light lamp reaches the predetermined value.

Description

  The present invention relates to a ballast water treatment apparatus that renders ballast water stored in a ship harmless.

In the case of ships such as tankers and freighters, after the cargo is transported to the destination and unloaded at the port, the ballast in the ship is used as the ballast water in order to maintain the stability of the ship. It is stored in the tank, sails to the loading port, and the ballast water is discharged at the port where the cargo is loaded.
For this reason, if microorganisms are alive in the ballast water, the environment in the sea area where the ballast water was discharged may be impaired. Therefore, when the ballast water is stored in the ballast tank, the microorganisms in the ballast water are killed. It is required to be detoxified.

As means for killing microorganisms in ballast water and detoxifying them, there is known an ultraviolet treatment method in which treatment water pumped up as ballast water is irradiated with ultraviolet rays for treatment (see, for example, Patent Document 1). However, when pumping up the ballast water, the water around the ship is disturbed at the beginning of the pumping, and sand and mud on the seabed are rolled up, increasing the turbidity in the water, reducing the ultraviolet transmittance of the pumped water to be treated, There is a risk that due to insufficient illuminance of ultraviolet rays, the processing object is insufficiently sterilized and flows into the ballast tank as ballast water.
As a water treatment technique for avoiding such danger, an ultraviolet sterilization method (see Patent Document 2) that detects the turbidity of water to be treated and adjusts the illuminance of ultraviolet light according to the turbidity, or water to be treated. A flowing water sterilization method (see Patent Document 3) is disclosed in which water is passed when turbidity is detected and it is confirmed that the illuminance of ultraviolet rays is sufficient for killing microorganisms.

JP 2006-248510 A JP 2000-185280 A Japanese Patent Laid-Open No. 10-109090

However, when the water treatment technology disclosed in Patent Documents 2 and 3 is used for, for example, ballast water treatment, the ultraviolet sterilization method disclosed in Patent Document 2 causes a rapid change in turbidity. Since the control of the irradiation amount cannot catch up and the turbidity of the water to be treated immediately after the start of pumping is very high, even if the irradiation output of the ultraviolet ray is increased to 100%, a sufficient ultraviolet irradiation amount cannot be obtained. Insufficient sterilization of the water to be treated due to insufficient irradiation amount of the water, there is a problem that it flows into the ballast tank as ballast water.
Further, in the running water sterilization method disclosed in Patent Document 3, tap water with very little turbidity is treated water, and water is passed when the irradiation amount of ultraviolet rays becomes sufficient. As described above, in the treatment of ballast water, the turbidity of the water to be treated immediately after the start of pumping is very high, and a sufficient amount of UV irradiation cannot be obtained even if the UV irradiation output is set to 100%. As a result, there is a problem that the treatment of the treated water immediately after the start of pumping remains insufficient.

  An object of the present invention is to provide a ballast water treatment apparatus that can reliably and efficiently perform detoxification treatment of ballast water.

  In order to achieve the above object, the invention according to claim 1 is a ballast water treatment apparatus that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank. The pump for pumping up the water to be treated on the ballast water treatment line, the filter, the ultraviolet irradiation unit for irradiating the pumped water with ultraviolet rays, and the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit. The ultraviolet lamp detected by the ultraviolet irradiation sensor, including an ultraviolet irradiation sensor to detect, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means. The treated water is discharged out of the ship by the outboard discharge means until the illuminance of the ultraviolet lamp reaches the predetermined illuminance, and the ballast tank Characterized by comprising control means for water injection.

  According to the first aspect of the present invention, the treated water is discharged out of the ship by the outboard discharge means until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance while passing the treated water. In addition, since water is poured into the ballast tank when the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the turbidity immediately after the start of pumping is very high, and the detoxification treatment by the irradiation of the ultraviolet lamp remains insufficient Can be sent to the ballast tank as ballast water, which is discharged to the outside of the ship and treated with ultraviolet rays by the ultraviolet lamp having a predetermined illuminance and rendered harmless.

  The invention described in claim 2 is a ballast water treatment apparatus that irradiates the collected water to be treated with ultraviolet rays to sterilize microorganisms in the water, and stores the treated water in a ballast tank, on the ballast water treatment line. A pump for pumping up the water to be treated, a filter, an ultraviolet irradiation unit for irradiating the pumped water with ultraviolet rays, an ultraviolet irradiation sensor for detecting the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit, and ultraviolet rays. A ballast tank for storing treated water treated by irradiation and an outboard discharge means; an untreated water drainage bypass line for bypassing the ultraviolet irradiation unit is connected to the ballast water treatment line; The treated water passes through the untreated water drain bypass line for a predetermined time from the start of pumping of treated water, and bypasses the ultraviolet irradiation unit. When the predetermined time elapses, the untreated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, irradiated with ultraviolet rays, and the ultraviolet irradiation sensor A control means is provided for continuously discharging the water to be treated out of the ship until the detected illuminance of the ultraviolet lamp reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank. .

According to the second aspect of the present invention, the treated water is discharged to the outside of the ship by bypassing the ultraviolet irradiation unit for a predetermined time from the start of pumping up the treated water. Since ultraviolet rays are irradiated through the ultraviolet irradiation unit, the treated water with high turbidity immediately after pumping up the treated water is discharged out of the ship as it is, and ultraviolet rays are applied to the treated water whose turbidity has decreased after a predetermined time. Irradiation will reduce the consumption of the ultraviolet lamp.
Then, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the ballast tank Therefore, treated water that has been irradiated with ultraviolet rays and detoxified by the ultraviolet lamp having a predetermined illuminance can be fed into the ballast tank as ballast water.

  The invention according to claim 3 is a ballast water treatment apparatus that irradiates the collected water to be treated with ultraviolet rays to sterilize microorganisms in the water, and stores the treated water in a ballast tank, on the ballast water treatment line. A pump for pumping up the water to be treated, a filter, an ultraviolet irradiation unit for irradiating the pumped water with ultraviolet rays, an ultraviolet irradiation sensor for detecting the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit, and ultraviolet rays. It comprises a ballast tank for storing treated water that has been irradiated and treated, and an outboard discharge means. The ballast water treatment line is connected to an untreated water drainage bypass line that bypasses the ultraviolet irradiation unit. A turbidity measuring means is provided in the line for discharging water, and further, when the pumping of the treated water is started, the treated water is passed through the untreated water drain bypass line. The ultraviolet irradiation unit is bypassed and discharged out of the ship by the outboard discharge means, and the turbidity of the treated water passing through the untreated water drain bypass line by the turbidity measuring means is below a predetermined turbidity. When it is detected, the untreated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor is a predetermined illuminance. It is characterized by comprising control means for continuing to discharge the water to be treated until it reaches, and pouring water into the ballast tank when the illuminance of the ultraviolet lamp reaches a predetermined illuminance.

According to the invention described in claim 3, at the start of pumping up the water to be treated, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit, and the turbidity of the water to be treated is measured by the turbidity measuring means. When it is detected that the turbidity is below a predetermined turbidity, the treated water is passed through the ultraviolet irradiation unit and irradiated with ultraviolet rays, so that the treated water with high turbidity is discharged out of the ship as it is and below the predetermined turbidity. The water to be treated is irradiated with ultraviolet rays, so that the consumption of the ultraviolet lamp can be reduced.
Then, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the ballast tank Therefore, treated water that has been irradiated with ultraviolet rays and detoxified by the ultraviolet lamp having a predetermined illuminance can be fed into the ballast tank as ballast water.

  The invention according to claim 4 is a ballast water treatment apparatus that irradiates ultraviolet rays to the treated water taken to sterilize microorganisms in the water, and stores the treated water in a ballast tank, on the ballast water treatment line A pump for pumping up the water to be treated, a filter, an ultraviolet irradiation unit for irradiating the pumped water with ultraviolet rays, an ultraviolet irradiation sensor for detecting the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit, and ultraviolet rays. It comprises a ballast tank for storing treated water that has been irradiated and treated, and an outboard discharge means. The ballast water treatment line is connected to an untreated water drainage bypass line that bypasses the ultraviolet irradiation unit. The line for discharging water is provided with turbidity measuring means, and further includes a turbidity change storage means for storing temporal changes in turbidity detected by the turbidity measuring means, Control means having a determination means for determining a change in temperature, and the control means bypasses the ultraviolet irradiation unit by passing the untreated water through the untreated water drain bypass line at the start of pumping of the untreated water. When it is determined that the time change of the turbidity of the treated water passing through the untreated water drain bypass line detected by the turbidity measuring means is below a predetermined range after being discharged out of the ship by the outboard discharging means, Adjust the ultraviolet output of the ultraviolet irradiation unit to the ultraviolet output according to the detected turbidity, close the untreated water drain bypass line, pass the treated water to the ultraviolet irradiation unit, irradiate ultraviolet rays, Continue to discharge the treated water out of the boat until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance. Characterized by comprising control means for water injection into Totanku.

According to the fourth aspect of the present invention, when the pumping of the water to be treated is started, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit and detected by the turbidity measuring means. When it is determined that the time change in turbidity has fallen below the predetermined range, the ultraviolet output of the ultraviolet irradiation unit is adjusted to the ultraviolet output according to the detected turbidity, and the water to be treated is passed through the ultraviolet irradiation unit to emit ultraviolet light. Irradiated, the treated water with high turbidity is discharged out of the ship as it is, and when it is determined that the time change of the turbidity of the treated water is within a predetermined range, the ultraviolet output of the ultraviolet irradiation unit is detected. By adjusting the ultraviolet output according to the turbidity and irradiating the water to be treated with ultraviolet rays, the power consumption of the ultraviolet irradiation unit can be reduced and the consumption of the ultraviolet lamp can be reduced.
Then, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the ballast tank Therefore, treated water that has been irradiated with ultraviolet rays and detoxified by the ultraviolet lamp having a predetermined illuminance can be fed into the ballast tank as ballast water.

  The invention according to claim 5 is a ballast water treatment apparatus that irradiates the collected water to be treated with ultraviolet rays to sterilize microorganisms in the water, and stores the treated water in a ballast tank, on the ballast water treatment line. Pumped pump for pumping water to be treated, filter, ultraviolet irradiation unit for irradiating pumped water for ultraviolet irradiation, ultraviolet irradiation sensor for detecting illuminance of ultraviolet lamp of ultraviolet irradiation unit, pumped A flow meter for measuring a flow rate of water to be treated; a ballast tank for storing treated water irradiated with ultraviolet rays; and an outboard discharge means. The ballast water treatment line bypasses the ultraviolet irradiation unit. Connecting the untreated water drain bypass line, and at the beginning of pumping the treated water, let the treated water pass through the untreated water drain bypass line. When the ultraviolet irradiation unit is bypassed and discharged out of the ship by the outboard discharge means, and the flow meter detects that the flow rate of the water to be treated passing through the ballast water treatment line has reached a predetermined flow rate, The untreated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, irradiated with ultraviolet light, and the treated water ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance. Control means is provided for continuously discharging the water and pouring water into the ballast tank when the illuminance of the ultraviolet lamp reaches a predetermined illuminance.

According to the fifth aspect of the present invention, when the pumping of the water to be treated is started, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit, and passes through the ballast water treatment line by the flow meter. When it is detected that the flow rate of the water to be treated has reached a predetermined flow rate, the water to be treated is passed through the ultraviolet irradiation unit and irradiated with ultraviolet rays, so that the water to be treated with high turbidity is discharged to the outside of the ship as it is. The flow rate of the treated water becomes a predetermined flow rate, and the treated water whose turbidity is lowered is irradiated with ultraviolet rays, so that the consumption of the ultraviolet lamp can be reduced.
Then, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the ballast tank Therefore, treated water that has been irradiated with ultraviolet rays and detoxified by the ultraviolet lamp having a predetermined illuminance can be fed into the ballast tank as ballast water.

  According to a sixth aspect of the present invention, a filter bypass line for bypassing the filter is connected to the ballast water treatment line according to any one of the first to fifth aspects. At the start of pumping of treated water, the treated water is bypassed through the filter, and when the illuminance of the ultraviolet lamp reaches the illuminance immediately before a predetermined illuminance, the filter bypass line is closed and the treated water is passed through the filter. It is characterized by becoming.

  According to the sixth aspect of the present invention, since the water to be treated is bypassed through the filter when the pumping of the water to be treated is started, clogging of the filter can be reduced, and the illuminance of the ultraviolet lamp is predetermined. Since the water to be treated is passed through the filter when the illuminance just before the illuminance is reached, treated water in which organisms (microorganisms) larger than the filter size are captured can be sent to the ballast tank as ballast water.

  A seventh aspect of the present invention is the ballast water treatment line according to any one of the first to fifth aspects, wherein a filter bypass line that bypasses the filter is connected to the ballast water treatment line. At the start of pumping up the treated water, the treated water is bypassed through the filter, and when the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the treated water is passed through the filter by closing the filter bypass line, and the illuminance of the ultraviolet lamp Is characterized in that water is poured into the ballast tank after a predetermined time delay from the time when becomes the predetermined illuminance.

According to the seventh aspect of the present invention, since the water to be treated is bypassed through the filter at the start of pumping up the water to be treated, clogging of the filter can be reduced, and the illuminance of the ultraviolet lamp is predetermined. Since the water to be treated is passed through the filter when the illuminance just before the illuminance is reached, treated water in which organisms (microorganisms) larger than the filter size are captured can be sent to the ballast tank as ballast water.
In addition, since the irradiance of the ultraviolet lamp reaches a predetermined illuminance, water is poured into the ballast tank with a delay for a predetermined time, so when the illuminance of the ultraviolet lamp reaches a predetermined illuminance, Only the treated water that has been detoxified by being irradiated with ultraviolet rays by the ultraviolet lamp having a predetermined illuminance is discharged from the ship and the treated water in which the detoxifying treatment existing in the ballast water treatment line remains insufficient Can be fed into the ballast tank as ballast water.

  According to the ballast water treatment apparatus of the present invention, the out-of-board discharge means discharges the water to be treated while allowing the water to be treated to pass through until the ultraviolet lamp has a predetermined illuminance and a predetermined amount of ultraviolet irradiation is obtained. When the illuminance of the ultraviolet lamp reaches a predetermined illuminance, water is poured into the ballast tank, so that the detoxification treatment of the ballast water can be performed reliably and efficiently.

It is a schematic block diagram which shows the 1st example of the form for implementing the ballast water treatment apparatus which concerns on this invention. It is a schematic block diagram which shows the 2nd example of the form for implementing the ballast water treatment apparatus which concerns on this invention. It is a schematic block diagram which shows the 3rd example of the form for implementing the ballast water treatment apparatus which concerns on this invention, and a 4th example. It is a schematic block diagram which shows the 5th example of the form for implementing the ballast water treatment apparatus which concerns on this invention.

Hereinafter, the form for carrying out the ballast water treatment device concerning the present invention is explained in detail with reference to drawings.
First, a first example of an embodiment of a ballast water treatment apparatus according to the present invention will be described with reference to a schematic configuration diagram shown in FIG.

  The ballast water treatment apparatus of the present example includes a pump 2 that pumps up water to be treated on a ballast water treatment line 1, a filter 3, and an ultraviolet irradiation unit 4 that irradiates the pumped water to be treated with ultraviolet rays. And an ultraviolet irradiation sensor 5 for detecting the illuminance of an ultraviolet lamp (not shown) of the ultraviolet irradiation unit 4, a ballast tank 6 for storing treated water irradiated with ultraviolet rays, and an outboard discharge means 7. Yes.

  Furthermore, the ballast water treatment apparatus of this example uses the outboard discharge means 7 to remove the treated water until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance while allowing the treated water to pass through. The control means 8 which has the 1st control function which discharges | emits and controls to inject | pour water into the ballast tank 6 when the illumination intensity of an ultraviolet lamp becomes predetermined illumination intensity is provided. The predetermined illuminance of the ultraviolet lamp here refers to an ultraviolet illuminance at which an irradiation amount sufficient for killing microorganisms present in the water to be treated can be obtained.

  More specifically, the upstream ballast water treatment line 1 is provided with a pump 2 and a filter 3 in the order of the pump 2 and the filter 3. Moreover, the to-be-treated water pump-up line 10 is connected to the upstream end of the ballast water treatment line 1, that is, the pump 2 in this example. Further, the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4 is branched into a ballast water injection line 11 and an outboard discharge line 12.

In this example, a filter bypass line 13 that bypasses the filter 3 is connected to the ballast water treatment line 1. A filter bypass valve 14 is provided in the filter bypass line 13. A treated water valve 15 is provided in the ballast water treatment line 1 between the filter bypass line 13 and the filter 3 connected to the upstream side of the filter 3. A backflow prevention valve 16 is provided in the ballast water treatment line 1 between the filter bypass line 13 connected to the downstream side of the filter 3 and the ultraviolet irradiation unit 4.
The ballast water treatment line 1 between the branch portion of the ballast water injection line 11 and the outboard discharge line 12 and the ultraviolet irradiation unit 4 is provided with a ballast supply valve 17.
The ballast water injection line 11 is provided with a ballast water injection valve 18, and the outboard discharge line 12 is provided with an outboard discharge valve 19 constituting the outboard discharge means 7.

Further, in this example, the control means 8 sets the illuminance immediately before the predetermined illuminance as the first set illuminance, and bypasses the filter 3 and passes the ultraviolet irradiation unit 4 at the start of pumping up the treated water. The treated water is discharged out of the ship by the outboard discharge means 7, and when the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass line 13 is set. It has the 2nd control function which performs control which closes, passes treated water through filter 3, and pours into ballast tank 6.
The first set illuminance is set to about 50% to 90% of the predetermined illuminance. If the first set illuminance is less than 50% of the predetermined illuminance, it takes time until the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the amount of water filtered by the filter 3 increases, and the filter 3 may be clogged quickly. .

Further, the control means 8 bypasses the filter 3 at the start of pumping of the water to be treated, passes the ultraviolet irradiation unit 4, discharges the water to be treated to the outside by the outboard discharge means 7, and the ultraviolet irradiation sensor 5 When the detected illuminance of the ultraviolet lamp reaches a predetermined illuminance, the filter bypass line 13 is closed, the water to be treated is passed through the filter 3, and the water to be treated is continuously discharged from the ship, and the illuminance of the ultraviolet lamp reaches the predetermined illuminance. And a third control function for performing control of pouring water into the ballast tank 6 with a predetermined time delay.
The delay time that is delayed for a predetermined time from the time when the illuminance of the ultraviolet lamp becomes the predetermined illuminance here is the time when the illuminance of the ultraviolet lamp becomes the predetermined illuminance, and is applied to the ballast water treatment line 1 downstream of the ultraviolet irradiation unit 4. It is set as the time until the treated water in which the existing detoxification process remains insufficient is discharged out of the ship.

  These controls by the control means 8 are performed by controlling the opening and closing of the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, the ballast water injection valve 18, and the outboard discharge valve 19.

The detoxification treatment of the water to be treated by the ballast water treatment apparatus of this example configured as described above is performed as follows.
[Detoxification process by the first control function of the control means 8]
First, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the outboard discharge valve 19 are opened, the filter bypass valve 14 and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. And at the same time as starting water flow to the ballast water treatment line 1, energization of the ultraviolet lamp is started. The treated water passed through the ballast water treatment line 1 is irradiated with ultraviolet rays when passing through the filter 3 and passing through the ultraviolet irradiation unit 4. The illuminance of the ultraviolet lamp of the ultraviolet irradiation unit 4 at this time is detected by the ultraviolet irradiation sensor 5, and the treated water is discharged from the outboard discharge line 12 to the outside of the ship by the outboard discharge means 7 until the illuminance of the ultraviolet lamp reaches a predetermined illuminance. Discharge. When the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, the turbidity immediately after the start of pumping is very high, and the water to be treated that is not sufficiently detoxified by the irradiation of the ultraviolet lamp is discharged out of the ship and irradiated by the ultraviolet lamp with a predetermined illuminance. The detoxified treated water is sent to the ballast tank as ballast water.

[Detoxification process by the second control function of the control means 8]
First, the filter bypass valve 14, the backflow prevention valve 16, the ballast supply valve 17, and the outboard discharge valve 19 are opened, the treated water valve 15 and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. And at the same time as starting water flow to the ballast water treatment line 1, energization of the ultraviolet lamp is started. The treated water passed through the ballast water treatment line 1 is irradiated with ultraviolet rays when passing through the filter 3 and passing through the ultraviolet irradiation unit 4. The illuminance of the ultraviolet lamp of the ultraviolet irradiation unit 4 at this time is detected by the ultraviolet irradiation sensor 5, and the treated water is discharged from the outboard discharge line 12 to the outside of the ship by the outboard discharge means 7 until the illuminance of the ultraviolet lamp reaches a predetermined illuminance. Discharge.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass valve 14 is closed and the treated water valve 15 is opened to be treated. Water is passed through the filter 3 to pass through the ultraviolet irradiation unit 4 and discharged out of the ship. When it is detected that the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, the turbidity immediately after the start of pumping is very high, and the water to be treated that is not sufficiently detoxified by the irradiation of the ultraviolet lamp is discharged out of the ship and irradiated by the ultraviolet lamp with a predetermined illuminance. Only the treated water that has been reliably rendered harmless is fed into the ballast tank 6 as ballast water. Moreover, since the water to be treated is bypassed by the filter 3 at the start of pumping up the water to be treated, clogging of the filter 3 is reduced.

[Detoxification process by the third control function of the control means 8]
First, the filter bypass valve 14, the backflow prevention valve 16, the ballast supply valve 17, and the outboard discharge valve 19 are opened, the treated water valve 15 and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. And at the same time as starting water flow to the ballast water treatment line 1, energization of the ultraviolet lamp is started. The treated water passed through the ballast water treatment line 1 is irradiated with ultraviolet rays when passing through the filter 3 and passing through the ultraviolet irradiation unit 4. The illuminance of the ultraviolet lamp of the ultraviolet irradiation unit 4 at this time is detected by the ultraviolet irradiation sensor 5, and the treated water is discharged from the outboard discharge line 12 to the outside of the ship by the outboard discharge means 7 until the illuminance of the ultraviolet lamp reaches a predetermined illuminance. Discharge.
Thereafter, when it is detected that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the filter bypass valve 14 is closed, the treated water valve 15 is opened, the treated water is passed through the filter 3, and the ultraviolet irradiation unit 4 is allowed to pass. To discharge outboard. Then, the treated water is discharged out of the ship by the outboard discharge means 7 until a predetermined time has elapsed from this point. When a predetermined time has elapsed from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, the water to be treated, which is still insufficiently detoxified in the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4, is discharged out of the ship and irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance. Only the treated water that has been reliably rendered harmless is fed into the ballast tank 6 as ballast water.

Next, a second example of the embodiment of the ballast water treatment apparatus according to the present invention will be described with reference to a schematic configuration diagram shown in FIG.
About the ballast water treatment apparatus of this example, the same code | symbol is attached | subjected about the structure same as the said 1st example, and the description is abbreviate | omitted.
As in the first example, the ballast water treatment apparatus of this example is configured to pump the treated water on the ballast water treatment line 1, pump 2 for pumping the treated water, filter 3, and irradiate the pumped treated water with ultraviolet rays. , An ultraviolet irradiation sensor 5 that detects the illuminance of an ultraviolet lamp (not shown) of the ultraviolet irradiation unit 4, a ballast tank 6 that stores treated water that has been irradiated with ultraviolet rays, and outboard The ballast water treatment line 1 is connected to an untreated water drain bypass line 22 that bypasses the ultraviolet irradiation unit 4.

Furthermore, the ballast water treatment apparatus of the present example allows the treated water to pass through the untreated water drain bypass line 22 for a predetermined time from the start of pumping up the treated water, bypasses the ultraviolet irradiation unit 4, and is discharged by the outboard discharge means 7. When the predetermined time has elapsed, the untreated water drain bypass line 22 is closed, the treated water is passed through the ultraviolet irradiation unit 4 and irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 is increased. Control means 23 having a first control function for continuing to discharge the water to be treated to a predetermined illuminance and pouring water into the ballast tank 6 when the illuminance of the ultraviolet lamp reaches the predetermined illuminance is provided.
The predetermined time from the start of pumping of the water to be treated here is set as a time when the turbidity of the water to be treated with high turbidity immediately after the pumping starts decreases and approaches the predetermined turbidity. Further, the predetermined turbidity refers to the turbidity at which a predetermined illuminance can be obtained when the water to be treated is irradiated with ultraviolet rays with an ultraviolet lamp.

In this example, similarly to the first example, a filter bypass line 13 that bypasses the filter 3 is connected to the ballast water treatment line 1. In this example, the filter bypass line 13 connects the above-described untreated water drain bypass line 22 and the downstream side of the filter 3.
Specifically, the untreated water drain bypass line 22 is connected to the ballast water treatment line 1 so as to bypass the filter 3 and the ultraviolet irradiation unit 4. A filter bypass line 13 is branched from the middle of the untreated water drain bypass line 22, and the filter bypass line 13 is connected to the ballast water treatment line 1 between the filter 3 and the ultraviolet irradiation unit 4.
An untreated water drain valve 24 is provided in the untreated water drain bypass line 22 on the downstream side where the filter bypass line 13 branches. A ballast supply valve 17 is provided between the ultraviolet irradiation unit 4 and the untreated water drain bypass line 22 connected to the downstream side of the ultraviolet irradiation unit 4.

  Further, in this example, the control means 23 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 for a predetermined time from the start of pumping up the treated water, thereby discharging outboard. 7 is discharged to the outside of the ship, and after a predetermined time has passed, the untreated water drain bypass line 22 is closed, the filter bypass line 13 is opened, the water to be treated is passed through the ultraviolet irradiation unit 4, and the ultraviolet irradiation is performed. 5 until the illuminance of the ultraviolet lamp detected at 5 reaches a predetermined illuminance, and the illuminance immediately before the predetermined illuminance is set as the first set illuminance, as in the first example, Irradiation of water to be treated which has been opened to the ultraviolet irradiation unit 4 by opening the filter bypass line 13 and the illuminance of the ultraviolet lamp is just before the predetermined illuminance, that is, the first set illuminance Close the filter bypass line 13 at the time of reaching the treatment water passed through the filter 3, and a second control function for controlling the water injection into the ballast tank 6.

  Further, the control means 23 passes the untreated water through the untreated water drain bypass line 22 for a predetermined time from the start of pumping up the treated water, bypasses the filter 3 and the ultraviolet irradiation unit 4, and uses the outboard discharge means 7 to outboard. When the predetermined time elapses, the untreated water drain bypass line 22 is closed, the filter bypass line 13 is opened, and the water to be treated is passed through the ultraviolet irradiation unit 4, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the filter is filtered. Control that closes the bypass line 13 and passes the water to be treated to the filter 3 and continues to discharge the water to be treated to the ballast tank 6 after a predetermined time delay from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance. A third control function for performing

These controls by the control means 23 control the opening and closing of the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, the ballast water injection valve 18, the outboard discharge valve 19, and the untreated water drain valve 24. Done.
Since the other configuration is the same as that of the first example, the description of the first example is cited and the description thereof is omitted.

The detoxification treatment of the water to be treated by the ballast water treatment apparatus of this example configured as described above is performed as follows.
[Detoxification process by the first control function of the control means 23]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and the treated water is shipped for a predetermined time from the start of pumping up the treated water. It is discharged from the outboard discharge line 12 by the outside discharge means 7 to the outside of the ship.
When a predetermined time has elapsed from the start of pumping up the treated water, the untreated water drain valve 24 is closed, the treated water valve 15, the backflow prevention valve 16, and the ballast supply valve 17 are opened, and the treated water is passed through the ultraviolet irradiation unit 4, The lamp is energized and irradiated with ultraviolet light, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

Thus, the treated water is discharged to the outside of the ship by bypassing the ultraviolet irradiation unit 4 for a predetermined time from the start of pumping up the treated water, and when the predetermined time has passed, the treated water is passed through the ultraviolet irradiation unit 4 and irradiated with ultraviolet rays. Therefore, the treated water with high turbidity immediately after the start of pumping up the treated water is discharged out of the ship as it is, and the treated water whose turbidity has decreased after a predetermined time has passed is irradiated with ultraviolet rays. Lamp consumption is reduced.
Then, ultraviolet rays are irradiated, and the water to be treated is continuously discharged until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6. Therefore, treated water that has been irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance and detoxified is sent to the ballast tank 6 as ballast water.

[Detoxification process by the second control function of the control means 23]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and the treated water is shipped for a predetermined time from the start of pumping up the treated water. It is discharged from the outboard discharge line 12 by the outside discharge means 7 to the outside of the ship.
When a predetermined time has elapsed from the start of pumping up the water to be treated, the untreated water drain valve 24 is closed, the filter bypass valve 14, the backflow prevention valve 16 and the ballast supply valve 17 are opened, and the water to be treated is passed through the ultraviolet irradiation unit 4 to the ultraviolet light. The lamp is energized and irradiated with ultraviolet light, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass valve 14 is closed and the treated water valve 15 is opened to be treated. Water is passed through the filter 3 to pass through the ultraviolet irradiation unit 4 and discharged out of the ship. When it is detected that the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  Thereby, in addition to the effect of the detoxification treatment by the first control function described above, at the start of pumping up the water to be treated, the water to be treated is bypassed by the filter 3, and the illuminance of the ultraviolet lamp becomes the illuminance just before the predetermined illuminance. Is detected by the ultraviolet irradiation sensor 5, the treated water valve 15 is opened and the water to be treated is passed through the filter 3, so that the clogging of the filter 3 is reduced.

[Detoxification process by the third control function of the control means 23]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and the treated water is shipped for a predetermined time from the start of pumping up the treated water. It is discharged from the outboard discharge line 12 by the outside discharge means 7 to the outside of the ship.
When a predetermined time has elapsed from the start of pumping up the water to be treated, the untreated water drain valve 24 is closed, the filter bypass valve 14, the backflow prevention valve 16 and the ballast supply valve 17 are opened, and the water to be treated is passed through the ultraviolet irradiation unit 4 to the ultraviolet light. The lamp is energized and irradiated with ultraviolet light, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance.
Thereafter, when it is detected that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the filter bypass valve 14 is closed, the treated water valve 15 is opened, the treated water is passed through the filter 3, and the ultraviolet irradiation unit 4 is allowed to pass. To discharge outboard. Then, the treated water is discharged out of the ship by the outboard discharge means 7 until a predetermined time has elapsed from this point. When a predetermined time has elapsed from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, in addition to the detoxification process by the first control function described above, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6 after a predetermined time has elapsed, so that the detoxification treatment existing in the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4 remains insufficient. Water to be treated is discharged out of the ship, and only treated water that has been reliably detoxified by being irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance is sent to the ballast tank 6 as ballast water. Further, at the start of pumping up the water to be treated, the water to be treated is bypassed through the filter 3, and when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp is just before the predetermined illuminance, the treated water valve 15 is turned on. Since the water to be treated is opened and passed through the filter 3, clogging of the filter 3 is reduced.

Next, a third example of the embodiment of the ballast water treatment apparatus according to the present invention will be described with reference to a schematic configuration diagram shown in FIG.
About the ballast water treatment apparatus of this example, the same code | symbol is attached | subjected about the structure same as the said 2nd example, and the description is abbreviate | omitted.

Similarly to the second example, the ballast water treatment apparatus of the present example irradiates the ballast water treatment line 1 with pump 2 for pumping up the treated water and pumping it, a filter 3, and irradiating the pumped treated water with ultraviolet rays. , An ultraviolet irradiation sensor 5 that detects the illuminance of an ultraviolet lamp (not shown) of the ultraviolet irradiation unit 4, a ballast tank 6 that stores treated water that has been irradiated with ultraviolet rays, and outboard The ballast water treatment line 1 is connected to an untreated water drainage bypass line 22 that bypasses the ultraviolet irradiation unit 4, and a turbidity measuring means is provided in the line for discharging untreated water. . As the turbidity measuring means 25, a turbidity sensor that measures the turbidity of the water to be treated passing through the untreated water drainage bypass line 22 is used.
In this example, the turbidity measuring means 25 is provided in the untreated water drainage bypass line 22, but the ballast water treatment line 1 between the pump 2 and the connection portion on the upstream side of the untreated water drainage bypass line 22. Alternatively, it may be provided in the ballast water treatment line 1 on the downstream side of the connection part on the downstream side of the untreated water drain bypass line 22 or in the outboard discharge line 12.

  Furthermore, the ballast water treatment apparatus of this example, when starting to pump up the treated water, passes the treated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 by the outboard discharge means 7. When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drain bypass line 22 is below a predetermined turbidity, the untreated water drain bypass line 22 is opened. Close and pass the water to be treated to the ultraviolet irradiation unit 4 and irradiate the ultraviolet rays, and continue to discharge the water to be treated out of the ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. A control means 26 having a first control function for performing water injection to the ballast tank 6 when the illuminance reaches a predetermined illuminance is provided. The predetermined turbidity here refers to a concentration at which a predetermined illuminance can be obtained when the water to be treated is irradiated with ultraviolet rays with an ultraviolet lamp.

  In this example, similarly to the second example, a filter bypass line 13 that bypasses the filter 3 is connected to the ballast water treatment line 1.

  In this example, when the pumping of the water to be treated is started, the control means 26 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 so that the outboard discharge means 7 When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drain bypass line 22 is below a predetermined turbidity, the untreated water drain bypass line 22 is opened. Close and open the filter bypass line 13 to pass the treated water through the ultraviolet irradiation unit 4, irradiate the ultraviolet rays, and discharge the treated water out of the ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. In the same manner as in the first example, the illuminance immediately before the predetermined illuminance is set as the first set illuminance, the filter bypass line 13 is opened, and the ultraviolet irradiating unit 4 is passed through. When the water to be treated is irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp reaches the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass line 13 is closed and the treated water is passed through the filter 3, and the ballast tank 6 has a second control function for performing water injection control.

  Further, when the pumping of the water to be treated is started, the control means 26 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 and discharges the water outside the ship by the outboard discharge means 7. When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drainage bypass line 22 is equal to or lower than a predetermined turbidity, the untreated water drainage bypass line 22 is closed and the filter bypass The line 13 is opened and the water to be treated is passed through the ultraviolet irradiation unit 4 to irradiate the ultraviolet rays. When the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance, the filter bypass line 13 is closed and the treatment is performed. Pass the water through the filter 3 and continue to discharge the treated water out of the ship. The ballast tank is delayed for a predetermined time from when the illuminance of the ultraviolet lamp reaches the predetermined illuminance. And a third control function for controlling the water injection into 6.

Similar to the second example, these controls by the control means 26 are performed by the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, the ballast water injection valve 18, the outboard discharge valve 19, and the untreated water. The opening and closing of the drain valve 24 and the ballast tank drain valve 21 is controlled.
Since the other configuration is the same as that of the second example, the description of the second example is cited and the description thereof is omitted.

The detoxification treatment of the water to be treated by the ballast water treatment apparatus of this example configured as described above is performed as follows.
[Detoxification process by the first control function of the control means 26]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drain bypass line 22 is equal to or lower than a predetermined turbidity, the untreated water drain valve 24 is closed, the treated water valve 15, The backflow prevention valve 16 and the ballast supply valve 17 are opened, the water to be treated is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized and irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 becomes a predetermined illuminance. The out-of-board discharge of the treated water continues.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

Thereby, at the start of pumping up the water to be treated, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit 4, and the turbidity of the water to be treated becomes below a predetermined turbidity by the turbidity measuring means 25. If it is detected that the water to be treated is passed through the ultraviolet irradiation unit 4 and irradiated with ultraviolet rays, the water to be treated with high turbidity is discharged out of the ship as it is, and the water to be treated having a predetermined turbidity or lower is irradiated with ultraviolet rays. The consumption of the ultraviolet lamp is reduced.
Then, ultraviolet rays are irradiated, and the water to be treated is continuously discharged until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6. Therefore, treated water that has been irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance and detoxified is sent to the ballast tank as ballast water.

[Detoxification process by the second control function of the control means 26]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drain bypass line 22 has become equal to or lower than a predetermined turbidity, the untreated water drain bypass line 22 is closed and the filter bypass valve 14 is closed. Then, the backflow prevention valve 16 and the ballast supply valve 17 are opened, the water to be treated is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized and irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 becomes a predetermined illuminance. Until then, the discharge of the water to be treated continues.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass valve 14 is closed and the treated water valve 15 is opened to be treated. Water is passed through the filter 3 to pass through the ultraviolet irradiation unit 4 and discharged out of the ship. When it is detected that the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  Thereby, in addition to the effect of the detoxification treatment by the first control function described above, at the start of pumping up the water to be treated, the water to be treated is bypassed by the filter 3, and the illuminance of the ultraviolet lamp becomes the illuminance just before the predetermined illuminance. Is detected by the ultraviolet irradiation sensor 5, the treated water valve 15 is opened and the water to be treated is passed through the filter 3, so that the clogging of the filter 3 is reduced.

[Detoxification process by the third control function of the control means 26]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the turbidity measuring means 25 detects that the turbidity of the treated water passing through the untreated water drain bypass line 22 has become equal to or lower than a predetermined turbidity, the untreated water drain bypass line 22 is closed and the filter bypass valve 14 is closed. Then, the backflow prevention valve 16 and the ballast supply valve 17 are opened, the water to be treated is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized and irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 becomes a predetermined illuminance. Until then, the discharge of the water to be treated continues.
Thereafter, when it is detected that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the filter bypass valve 14 is closed, the treated water valve 15 is opened, the treated water is passed through the filter 3, and the ultraviolet irradiation unit 4 is allowed to pass. To discharge outboard. Then, the treated water is discharged out of the ship by the outboard discharge means 7 until a predetermined time has elapsed from this point. When a predetermined time has elapsed from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, in addition to the detoxification process by the first control function described above, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6 after a predetermined time has elapsed, so that the detoxification treatment existing in the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4 remains insufficient. Water to be treated is discharged out of the ship, and only treated water that has been reliably detoxified by being irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance is sent to the ballast tank 6 as ballast water. Further, at the start of pumping up the water to be treated, the water to be treated is bypassed through the filter 3, and when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp is just before the predetermined illuminance, the treated water valve 15 is turned on. Since the water to be treated is opened and passed through the filter 3, clogging of the filter 3 is reduced.

Next, a fourth example of the embodiment of the ballast water treatment apparatus according to the present invention will be described.
Since the ballast water treatment apparatus of this example has the same configuration as that of the third example except for the control means, it will be described with reference to the schematic configuration diagram shown in FIG. The description of the third example is used for the configuration described in, and the description thereof is omitted.

Similarly to the third example, the ballast water treatment apparatus of the present example irradiates the ballast water treatment line 1 with ultraviolet rays to the pump 2 that pumps up the treated water and pumps it, the filter 3, and the pumped treated water. , An ultraviolet irradiation sensor 5 that detects the illuminance of an ultraviolet lamp (not shown) of the ultraviolet irradiation unit 4, a ballast tank 6 that stores treated water that has been irradiated with ultraviolet rays, and outboard The ballast water treatment line 1 is connected to an untreated water drainage bypass line 22 that bypasses the ultraviolet irradiation unit 4, and a turbidity measuring means is provided in the line for discharging untreated water. . As the turbidity measuring means 25, a turbidity sensor that measures the turbidity of the water to be treated passing through the untreated water drainage bypass line 22 is used.
In this example, the turbidity measuring means 25 is provided in the untreated water drainage bypass line 22, but the ballast water treatment line 1 between the pump 2 and the connection portion on the upstream side of the untreated water drainage bypass line 22. Alternatively, it may be provided in the ballast water treatment line 1 on the downstream side of the connection part on the downstream side of the untreated water drain bypass line 22 or in the outboard discharge line 12.

Furthermore, the ballast water treatment apparatus of this example includes a control means 27 having a turbidity change storage means for storing the turbidity change detected by the turbidity measurement means 25 and a determination means for determining the turbidity change over time. At the start of pumping of the treated water, the control means 27 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 and discharges the treated water outside the ship by the outboard discharge means 7. When it is determined that the time change of the turbidity of the water to be treated that passes through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is within a predetermined range, the ultraviolet output of the ultraviolet irradiation unit 4 is detected. The UV output is adjusted according to the turbidity, the untreated water drain bypass line 22 is closed, the treated water is passed through the UV irradiation unit 4 and irradiated with UV light, and is detected by the front outside line irradiation sensor 5. Control means 27 having a first control function for performing control to continuously discharge the treated water out of the ship until the illuminance of the ultraviolet lamp reaches a predetermined illuminance, and to inject water into the ballast tank when the illuminance of the ultraviolet lamp reaches the predetermined illuminance. ing.
The predetermined range of the turbidity time change here refers to a time change in which the turbidity can be expected to reach the predetermined turbidity in a short time. Further, the predetermined turbidity refers to the turbidity at which a predetermined illuminance can be obtained when the water to be treated is irradiated with ultraviolet rays with an ultraviolet lamp.

  In this example, when the pumping of the water to be treated is started, the control means 27 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 so as to bypass the outboard discharge means 7. When it is determined that the time change of the turbidity of the treated water that is discharged out of the ship and passes through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is below a predetermined range, the ultraviolet irradiation unit 4 The UV output is adjusted to the UV output according to the detected turbidity, the untreated water drain bypass line 22 is closed, the filter bypass line 13 is opened and the water to be treated is passed through the UV irradiation unit 4 to irradiate the UV light. Then, the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches the predetermined illuminance, and the illuminance immediately before the predetermined illuminance is obtained as in the first example. It is set as one set illuminance, the filter bypass line 13 is opened and the treated water passed through the ultraviolet irradiation unit 4 is irradiated with ultraviolet rays, and the illuminance of the ultraviolet lamp immediately before the predetermined illuminance, that is, the first set illuminance When the pressure reaches the value, the filter bypass line 13 is closed, the water to be treated is passed through the filter 3, and a second control function is performed to perform water injection into the ballast tank 6.

  Furthermore, when the pumping of the water to be treated is started, the control means 27 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4 and is discharged outside the ship by the outboard discharge means 7. When it is determined that the time change of the turbidity of the water to be treated that passes through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is within a predetermined range, the ultraviolet output of the ultraviolet irradiation unit 4 is detected. The ultraviolet output is adjusted according to the turbidity generated, the untreated water drain bypass line 22 is closed, the filter bypass line 13 is opened, the treated water is passed through the ultraviolet irradiation unit 4, and the ultraviolet irradiation is performed. When the illuminance of the ultraviolet lamp detected in 5 reaches a predetermined illuminance, the filter bypass line 13 is closed and the water to be treated is passed through the filter 3, and further the water to be treated Continued overboard discharge, illumination of the ultraviolet lamp has a third control function for controlling the water injection after the timing when the predetermined intensity to the ballast tank 6 by a predetermined time delay.

These controls by the control means 27 are the same as in the third example. The filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, the ballast water injection valve 18, the outboard discharge valve 19, and the untreated water. This is performed by controlling the opening and closing of the drain valve 24.
Since the other configuration is the same as that of the third example, the description of the third example is cited and the description thereof is omitted.

The detoxification treatment of the water to be treated by the ballast water treatment apparatus of this example configured as described above is performed as follows.
[Detoxification process by the first control function of the control means 27]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When it is determined that the time change of the turbidity of the water to be treated that passes through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is within a predetermined range, the untreated water drain valve 24 is closed to treat the treated water. The valve 15, the backflow prevention valve 16, and the ballast supply valve 17 are opened, the water to be treated is passed through the ultraviolet irradiation unit 4, and at the same time, the ultraviolet lamp is energized, and the ultraviolet output of the ultraviolet irradiation unit 4 corresponds to the detected turbidity. The water to be treated is irradiated with ultraviolet rays after being adjusted to the ultraviolet output, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance.
When the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

Thereby, at the start of pumping up the water to be treated, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit 4, and the time change of the turbidity of the water to be treated detected by the turbidity measuring means 25 is within a predetermined range. When it is determined that the following is true, the ultraviolet output of the ultraviolet irradiation unit 4 is adjusted to the ultraviolet output according to the detected turbidity, and the water to be treated is passed through the ultraviolet irradiation unit 4 and irradiated with ultraviolet rays. When the high water to be treated is discharged out of the ship as it is and it is determined that the time change of the turbidity of the water to be treated is within a predetermined range, the ultraviolet output corresponding to the detected turbidity is detected. By adjusting the output to irradiate the water to be treated with ultraviolet rays, the power consumption of the ultraviolet irradiation unit 4 can be reduced and the consumption of the ultraviolet lamps can be reduced.
Then, ultraviolet rays are irradiated, and the water to be treated is continuously discharged until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6. Therefore, treated water that has been irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance and detoxified is sent to the ballast tank as ballast water.

[Detoxification process by the second control function of the control means 27]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When it is determined that the time change of the turbidity of the treated water passing through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is below a predetermined range, the untreated water drain bypass line 22 is closed and the filter The bypass valve 14, the backflow prevention valve 16, and the ballast supply valve 17 are opened, water to be treated is passed through the ultraviolet irradiation unit 4, and at the same time, the ultraviolet lamp is energized, and the ultraviolet output of the ultraviolet irradiation unit 4 is detected according to the detected turbidity. Then, the water to be treated is irradiated with ultraviolet rays after being adjusted to the ultraviolet output, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass valve 14 is closed and the treated water valve 15 is opened to be treated. Water is passed through the filter 3 to pass through the ultraviolet irradiation unit 4 and discharged out of the ship. When it is detected that the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  Thereby, in addition to the effect of the detoxification treatment by the first control function described above, at the start of pumping up the water to be treated, the water to be treated is bypassed by the filter 3, and the illuminance of the ultraviolet lamp becomes the illuminance just before the predetermined illuminance. Is detected by the ultraviolet irradiation sensor 5, the treated water valve 15 is opened and the water to be treated is passed through the filter 3, so that the clogging of the filter 3 is reduced.

[Detoxification process by the third control function of the control means 27]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When it is determined that the time change of the turbidity of the treated water passing through the untreated water drain bypass line 22 detected by the turbidity measuring means 25 is below a predetermined range, the untreated water drain bypass line 22 is closed and the filter The bypass valve 14, the backflow prevention valve 16, and the ballast supply valve 17 are opened, water to be treated is passed through the ultraviolet irradiation unit 4, and at the same time, the ultraviolet lamp is energized, and the ultraviolet output of the ultraviolet irradiation unit 4 is detected according to the detected turbidity. Then, the water to be treated is irradiated with ultraviolet rays after being adjusted to the ultraviolet output, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance.
Thereafter, when it is detected that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the filter bypass valve 14 is closed, the treated water valve 15 is opened, the treated water is passed through the filter 3, and the ultraviolet irradiation unit 4 is allowed to pass. To discharge outboard. Then, the treated water is discharged out of the ship by the outboard discharge means 7 until a predetermined time has elapsed from this point. When a predetermined time has elapsed from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, in addition to the detoxification process by the first control function described above, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6 after a predetermined time has elapsed, so that the detoxification treatment existing in the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4 remains insufficient. Water to be treated is discharged out of the ship, and only treated water that has been reliably detoxified by being irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance is sent to the ballast tank 6 as ballast water. Further, at the start of pumping up the water to be treated, the water to be treated is bypassed through the filter 3, and when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp is just before the predetermined illuminance, the treated water valve 15 is turned on. Since the water to be treated is opened and passed through the filter 3, clogging of the filter 3 is reduced.

Next, a fifth example of the embodiment of the ballast water treatment apparatus according to the present invention will be described with reference to a schematic configuration diagram shown in FIG.
About the ballast water treatment apparatus of this example, the same code | symbol is attached | subjected about the structure same as the said 2nd example, and the description is abbreviate | omitted.

  Similarly to the second example, the ballast water treatment apparatus of the present example irradiates the ballast water treatment line 1 with pump 2 for pumping up the treated water and pumping it, a filter 3, and irradiating the pumped treated water with ultraviolet rays. , An ultraviolet irradiation sensor 5 that detects the illuminance of an ultraviolet lamp (not shown) of the ultraviolet irradiation unit 4, a ballast tank 6 that stores treated water that has been irradiated with ultraviolet rays, and outboard The ballast water treatment line 1 is connected to an untreated water drain bypass line 22 that bypasses the ultraviolet irradiation unit 4. Furthermore, in this example, the flowmeter 28 which measures the flow volume of the to-be-processed water pumped up on the ballast water treatment line 1 is provided.

Furthermore, the ballast water treatment apparatus of this example, when starting to pump up the water to be treated, causes the water to be treated to pass through the untreated water drain bypass line 22 and bypass the filter 3 and the ultraviolet irradiation unit 22 by the outboard discharge means 7. When it is detected that the flow rate of the water to be treated discharged to the outside of the ship and passing through the ballast water treatment line 1 has reached a predetermined flow rate by the flow meter 28, the untreated water drain bypass line 22 is closed to remove the water to be treated. Through the ultraviolet irradiation unit 4, the ultraviolet light is irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches the predetermined illuminance. The control means 29 which has the 1st control function which performs control which pours into the ballast tank 6 is provided.
The predetermined flow rate in the flow rate of the water to be treated here is set as a flow rate in which the turbidity of the water to be treated having high turbidity immediately after the start of pumping decreases and approaches the predetermined turbidity.

  Further, in this example, when the pumping of the water to be treated is started, the control means 29 passes the untreated water through the untreated water drain bypass line 22 and bypasses the ultraviolet irradiation unit 22, and is discharged outside the ship by the outboard discharge means 7. When the flow meter 28 detects that the flow rate of the treated water passing through the ballast water treatment line 1 has reached a predetermined flow rate, the untreated water drain bypass line 22 is closed and the treated water is discharged to the ultraviolet irradiation unit. 4 is irradiated with ultraviolet rays, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches the predetermined illuminance, and immediately before the predetermined illuminance, as in the first example. Is set as the first set illuminance, the filter bypass line 13 is opened and the water to be treated that has passed through the ultraviolet irradiation unit 4 is irradiated with ultraviolet rays, and the ultraviolet lamp has an illuminance immediately before the predetermined illuminance. Illuminance, i.e. the treated water by closing the filter bypass line 13 when it reaches the first set illuminance through the filter 3, and a second control function for controlling the water injection into the ballast tank 6.

  Further, when the pumping of the water to be treated is started, the control means 29 passes the untreated water through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 22 and discharges the water outside the ship by the outboard discharge means 7. When the flow meter 28 detects that the flow rate of the water to be treated passing through the ballast water treatment line 1 has reached a predetermined flow rate, the untreated water drain bypass line 22 is closed and the water to be treated is supplied to the ultraviolet irradiation unit 4. When the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance, the filter bypass line 13 is closed and the water to be treated is passed through the filter 3. It has a third control function for performing control to continuously discharge the water and to inject water into the ballast tank 6 with a predetermined time delay from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance.

Similar to the second example, these controls by the control means 29 are performed by the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, the ballast water injection valve 18, the outboard discharge valve 19, and the untreated water. This is performed by controlling the opening and closing of the drain valve 24.
Since the other configuration is the same as that of the second example, the description of the second example is cited and the description thereof is omitted.

The detoxification treatment of the water to be treated by the ballast water treatment apparatus of this example configured as described above is performed as follows.
[Detoxification process by the first control function of the control means 29]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the flow meter 28 detects that the flow rate of the treated water passing through the ballast water treatment line 1 has reached a predetermined flow rate, the untreated water drain valve 24 is closed, the treated water valve 15, the backflow prevention valve 16, and the ballast supply. The valve 17 is opened, the treated water is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized and irradiated with ultraviolet rays, and the treated water is out of the boat until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. The discharge continues.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

Thereby, at the start of pumping up the water to be treated, the water to be treated is discharged outside the ship by bypassing the ultraviolet irradiation unit 4, and the flow rate of the water to be treated passing through the ballast water treatment line 1 by the flow meter 28 is predetermined. Is detected, the treated water is passed through the ultraviolet irradiation unit 4 and irradiated with ultraviolet light, so that the treated water with high turbidity is discharged out of the ship as it is, and the treated water flow rate is predetermined. As the flow rate is increased, the water to be treated whose turbidity is reduced is irradiated with ultraviolet rays, so that the consumption of the ultraviolet lamp is reduced.
Then, ultraviolet rays are irradiated, and the water to be treated is continuously discharged until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6. Therefore, treated water that has been irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance and detoxified is sent to the ballast tank as ballast water.

[Detoxification process by the second control function of the control means 29]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the flow meter 28 detects that the flow rate of the treated water passing through the ballast water treatment line 1 has reached a predetermined flow rate, the untreated water drain bypass line 22 is closed, the filter bypass valve 14, the backflow prevention valve 16, and the ballast. The supply valve 17 is opened, the treated water is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized to irradiate the ultraviolet light, and the treated water ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. External discharge continues.
Thereafter, when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp has reached the illuminance immediately before the predetermined illuminance, that is, the first set illuminance, the filter bypass valve 14 is closed and the treated water valve 15 is opened to be treated. Water is passed through the filter 3 to pass through the ultraviolet irradiation unit 4 and discharged out of the ship. When it is detected that the illuminance of the ultraviolet lamp reaches a predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  Thereby, in addition to the effect of the detoxification treatment by the first control function described above, at the start of pumping up the water to be treated, the water to be treated is bypassed by the filter 3, and the illuminance of the ultraviolet lamp becomes the illuminance just before the predetermined illuminance. Is detected by the ultraviolet irradiation sensor 5, the treated water valve 15 is opened and the water to be treated is passed through the filter 3, so that the clogging of the filter 3 is reduced.

[Detoxification process by the third control function of the control means 29]
First, the untreated water drain valve 24 and the outboard discharge valve 19 are opened, the filter bypass valve 14, the treated water valve 15, the backflow prevention valve 16, the ballast supply valve 17, and the ballast water injection valve 18 are closed, and the pump 2 is started. By starting the pump 2, the water to be treated is pumped from the water to be treated pumping line 10 and is passed through the ballast water treatment line 1. The treated water passed through the ballast water treatment line 1 passes through the untreated water drain bypass line 22 and bypasses the filter 3 and the ultraviolet irradiation unit 4, and is discharged from the outboard discharge line 12 by the outboard discharge means 7. To be discharged.
When the flow meter 28 detects that the flow rate of the treated water passing through the ballast water treatment line 1 has reached a predetermined flow rate, the untreated water drain bypass line 22 is closed, the filter bypass valve 14, the backflow prevention valve 16, and the ballast. The supply valve 17 is opened, the treated water is passed through the ultraviolet irradiation unit 4, the ultraviolet lamp is energized to irradiate the ultraviolet light, and the treated water ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. External discharge continues.
Thereafter, when it is detected that the illuminance of the ultraviolet lamp has reached the predetermined illuminance, the filter bypass valve 14 is closed, the treated water valve 15 is opened, the treated water is passed through the filter 3, and the ultraviolet irradiation unit 4 is allowed to pass. To discharge outboard. Then, the treated water is discharged out of the ship by the outboard discharge means 7 until a predetermined time has elapsed from this point. When a predetermined time has elapsed from the time when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the outboard discharge valve 19 is closed and the ballast water injection valve 18 is opened.

  As a result, in addition to the detoxification process by the first control function described above, ultraviolet rays are irradiated, and the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor 5 reaches a predetermined illuminance. When the illuminance of the ultraviolet lamp reaches the predetermined illuminance, water is poured into the ballast tank 6 after a predetermined time has elapsed, so that the detoxification treatment existing in the ballast water treatment line 1 on the downstream side of the ultraviolet irradiation unit 4 remains insufficient. Water to be treated is discharged out of the ship, and only treated water that has been reliably detoxified by being irradiated with ultraviolet rays by an ultraviolet lamp having a predetermined illuminance is sent to the ballast tank 6 as ballast water. Further, at the start of pumping up the water to be treated, the water to be treated is bypassed through the filter 3, and when the ultraviolet irradiation sensor 5 detects that the illuminance of the ultraviolet lamp is just before the predetermined illuminance, the treated water valve 15 is turned on. Since the water to be treated is opened and passed through the filter 3, clogging of the filter 3 is reduced.

DESCRIPTION OF SYMBOLS 1 Ballast water treatment line 2 Pump 3 Filter 4 Ultraviolet irradiation unit 5 Ultraviolet irradiation sensor 6 Ballast tank 7 Outboard discharge means 8 Control means 10 To-be-treated water pump-up line 11 Ballast water injection line 12 Outboard discharge line 13 Filter bypass line 14 Filter Bypass valve 15 Treated water valve 16 Backflow prevention valve 17 Ballast supply valve 18 Ballast water injection valve 19 Outboard discharge valve 22 Untreated water drain bypass line 23 Control means 24 Untreated water drain valve 25 Turbidity measuring means 26, 27 Control means 28 Flow meter 29 Control means

Claims (7)

A ballast water treatment device that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank,
A pump that pumps up and pumps treated water onto a ballast water treatment line, a filter, an ultraviolet irradiation unit that irradiates the pumped water with ultraviolet light, and an ultraviolet ray that detects the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit An irradiation sensor, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means,
Further, the treated water is discharged out of the ship by the outboard discharge means until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance while passing the treated water, and the illuminance of the ultraviolet lamp is predetermined. A ballast water treatment apparatus comprising control means for injecting water into the ballast tank when illuminance is reached. A ballast water treatment device that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank,
A pump that pumps up and pumps treated water onto a ballast water treatment line, a filter, an ultraviolet irradiation unit that irradiates the pumped water with ultraviolet light, and an ultraviolet ray that detects the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit An irradiation sensor, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means,
Connected to the ballast water treatment line is an untreated water drain bypass line that bypasses the ultraviolet irradiation unit,
Furthermore, for a predetermined time from the start of pumping up the treated water, the treated water passes through the untreated water drain bypass line, bypasses the ultraviolet irradiation unit, and is discharged out of the ship by the outboard discharge means. Then, the untreated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, irradiated with ultraviolet rays, and the treated water is irradiated until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance. A ballast water treatment apparatus comprising control means for continuously discharging the water out of the ship and pouring water into the ballast tank when the illuminance of the ultraviolet lamp reaches a predetermined illuminance. A ballast water treatment device that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank,
A pump that pumps up and pumps treated water onto a ballast water treatment line, a filter, an ultraviolet irradiation unit that irradiates the pumped water with ultraviolet light, and an ultraviolet ray that detects the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit An irradiation sensor, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means,
The ballast water treatment line is connected to an untreated water drain bypass line that bypasses the ultraviolet irradiation unit, and further includes a turbidity measuring means in the line for discharging untreated water,
Furthermore, at the start of pumping up the treated water, the treated water passes through the untreated water drain bypass line, bypasses the ultraviolet irradiation unit, and is discharged out of the ship by the outboard discharge means. When it is detected that the turbidity of the treated water passing through the untreated water drainage bypass line is equal to or lower than a predetermined turbidity, the untreated water drainage bypass line is closed and the treated water is sent to the ultraviolet irradiation unit. Through the irradiation of ultraviolet light, the discharge of the water to be treated is continued until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and when the illuminance of the ultraviolet lamp reaches the predetermined illuminance, the ballast tank A ballast water treatment apparatus comprising control means for pouring water into the water. A ballast water treatment device that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank,
A pump that pumps up and pumps treated water onto a ballast water treatment line, a filter, an ultraviolet irradiation unit that irradiates the pumped water with ultraviolet light, and an ultraviolet ray that detects the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit An irradiation sensor, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means,
The ballast water treatment line is connected to an untreated water drain bypass line that bypasses the ultraviolet irradiation unit, and further includes a turbidity measuring means in the line for discharging untreated water,
The apparatus further comprises a turbidity change storage means for storing the turbidity time change detected by the turbidity measurement means and a determination means for determining the turbidity time change, wherein the control means comprises water to be treated. At the start of pumping, the untreated water detected by the turbidity measuring means is discharged by the outboard discharge means by passing the untreated water through the untreated water drain bypass line and bypassing the ultraviolet irradiation unit. When it is determined that the time change of the turbidity of the water to be treated that passes through the wastewater bypass line is below a predetermined range, the ultraviolet output of the ultraviolet irradiation unit is adjusted to the ultraviolet output according to the detected turbidity, The treated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, irradiated with ultraviolet light, and the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor becomes a predetermined illuminance. Until continued overboard discharge of the water to be treated, the illuminance of the ultraviolet lamp ballast water treatment apparatus characterized by comprising a control means for water injection into the ballast tank Once reached a predetermined illuminance. A ballast water treatment device that irradiates the treated water taken with ultraviolet rays to sterilize microorganisms in the water and stores the treated water in a ballast tank,
A pump that pumps up and pumps treated water onto a ballast water treatment line, a filter, an ultraviolet irradiation unit that irradiates the pumped water with ultraviolet light, and an ultraviolet ray that detects the illuminance of the ultraviolet lamp of the ultraviolet irradiation unit An irradiation sensor, a flow meter for measuring the flow rate of the treated water pumped up, a ballast tank for storing treated water treated by irradiating ultraviolet rays, and an outboard discharge means,
Connected to the ballast water treatment line is an untreated water drain bypass line that bypasses the ultraviolet irradiation unit,
Further, at the start of pumping up the treated water, the treated water passes through the untreated water drain bypass line, bypasses the ultraviolet irradiation unit, and is discharged out of the ship by the outboard discharge means, and the ballast is discharged by the flow meter. When it is detected that the flow rate of the treated water passing through the water treatment line has reached a predetermined flow rate, the untreated water drain bypass line is closed, the treated water is passed through the ultraviolet irradiation unit, and ultraviolet rays are irradiated. And a control means for continuing to discharge the water to be treated out of the ship until the illuminance of the ultraviolet lamp detected by the ultraviolet irradiation sensor reaches a predetermined illuminance, and pouring water into the ballast tank when the illuminance of the ultraviolet lamp reaches the predetermined illuminance. A ballast water treatment apparatus characterized by that. A filter bypass line that bypasses the filter is connected to the ballast water treatment line,
Further, the control means bypasses the filter when the pumping of the water to be treated is bypassed, and closes the filter bypass line when the illuminance of the ultraviolet lamp reaches the illuminance immediately before the predetermined illuminance. The ballast water treatment apparatus according to any one of claims 1 to 5, wherein treated water is passed through the filter. A filter bypass line that bypasses the filter is connected to the ballast water treatment line,
Further, the control means bypasses the filter when the pumping of the water to be treated is bypassed, and closes the filter bypass line when the illuminance of the ultraviolet lamp reaches a predetermined illuminance to pass the water to be treated to the filter. 6. The ballast according to claim 1, wherein water is poured into the ballast tank after a predetermined time delay from the time when the illuminance of the ultraviolet lamp reaches a predetermined illuminance. Water treatment equipment.

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