WO2015104950A1 - 水処理装置および水処理方法 - Google Patents
水処理装置および水処理方法 Download PDFInfo
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- WO2015104950A1 WO2015104950A1 PCT/JP2014/082941 JP2014082941W WO2015104950A1 WO 2015104950 A1 WO2015104950 A1 WO 2015104950A1 JP 2014082941 W JP2014082941 W JP 2014082941W WO 2015104950 A1 WO2015104950 A1 WO 2015104950A1
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- Prior art keywords
- filter
- water
- treated
- water treatment
- flow path
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
Definitions
- the present invention relates to a water treatment apparatus and a water treatment method, and more particularly, to a water treatment apparatus and a water treatment method for filtering water to be treated using a filter.
- Patent Document 1 Japanese Patent Laid-Open No. 2010-64162 discloses the following technique. That is, the filter device includes a support shaft that is fixed upright on the base, and a both-end-closed vertical cylindrical filter that is detachably attached to the support shaft. In addition, a filtered fluid passage is formed on the support shaft to communicate the inside and outside of the filter.
- the present invention has been made to solve the above-described problems, and an object thereof is to provide a water treatment apparatus and a water treatment method capable of obtaining a higher cleaning effect on a filter.
- a water treatment apparatus includes a filter that can be rotated so that the filtration surface moves in the circumferential direction, and from the outside of the filter toward the filtration surface.
- the treated water outflow part for flowing out the treated water, the filtered water flow path for deriving the filtered water that has passed through the filter from the inside of the filter, and the treated water outflow in a state where the filter is rotating The treated water flows out toward the filtration surface by the section, the filtration operation in which the filtrate is led out from the filtrate water flow path, the filter is rotating, and the filtrate water flow path is closed
- a control unit that switches between a cleaning operation in which the treated water flows out toward the filtration surface by the treated water outflow unit.
- a water treatment method includes a filter that can be rotated so that a filtration surface moves in a circumferential direction, and water to be treated flows out toward the filtration surface.
- a water treatment method in a water treatment apparatus comprising a treated water outflow portion and a filtered water flow path for deriving filtered water that has passed through the filter from the inside of the filter, the step of starting rotation of the filter And, in a state where the filter is rotating, a filtration operation in which the treated water flows out toward the filtration surface by the treated water outflow portion, and the filtered water is led out from the filtered water flow path, In a state where the filter is rotating and the filtered water flow path is closed, the cleaning water flow is switched to the cleaning operation in which the treated water flows out toward the filtration surface by the treated water outflow portion. And a step.
- the present invention can be realized as a semiconductor integrated circuit that controls part or all of a water treatment apparatus including such a characteristic treatment unit.
- the present invention can be realized not only as a water treatment apparatus including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing.
- FIG. 1 is a diagram showing a configuration of a water treatment system including a water treatment apparatus according to an embodiment of the present invention.
- FIG. 2 is a vertical sectional view showing the configuration of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 3 is a horizontal sectional view showing the configuration of the section taken along the line III-III shown in FIG.
- FIG. 4 is a diagram for explaining the flow of operation of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 5 is a diagram showing a comparison result between a temporal change in the differential pressure ⁇ P of the filter in the water treatment apparatus according to the embodiment of the present invention and a temporal change in the differential pressure ⁇ P of the filter in another water treatment apparatus. is there.
- FIG. 1 is a diagram showing a configuration of a water treatment system including a water treatment apparatus according to an embodiment of the present invention.
- FIG. 2 is a vertical sectional view showing the configuration of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 6 is a diagram showing a part of the configuration of Modification 1 (No. 1) of the water treatment treatment according to the embodiment of the present invention.
- FIG. 7 is a diagram illustrating a configuration of the treated water outflow portion illustrated in FIG. 6.
- FIG. 8 is a diagram showing a part of the configuration of Modification 1 (No. 2) of the water treatment treatment according to the embodiment of the present invention.
- FIG. 9 is a diagram showing a part of the configuration of Modification Example 1 (No. 3) of the water treatment treatment according to the embodiment of the present invention.
- FIG. 10 is a horizontal cross-sectional view showing a part of the configuration of Modification 2 (No. 1) of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 1 Modification 1
- FIG. 7 is a diagram illustrating a configuration of the treated water outflow portion illustrated in FIG. 6.
- FIG. 8 is a diagram showing a part of the configuration of Modification 1 (No. 2) of the water treatment treatment according to the embodiment of the present invention
- FIG. 11 is a vertical cross-sectional view showing a part of the configuration of Modification 2 (No. 2) of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 12 is a vertical cross-sectional view showing a configuration of Modification 3 of the water treatment device according to the embodiment of the present invention.
- FIG. 13 is a vertical direction sectional view which shows the structure of the modification 4 of the water treatment apparatus which concerns on embodiment of this invention.
- a water treatment apparatus includes a filter that is rotatable so that a filtration surface moves in a circumferential direction, and a treatment that flows out water to be treated from the outside of the filter toward the filtration surface.
- the treated water flows out.
- a controller that switches a cleaning operation in which the water to be treated flows out toward the filtration surface.
- the filtered water flow path is closed, so that the filtered water is accumulated in the filter without being guided to the filtered water flow path, and the inside of the filter is filled with the filtered water. Further, when the treated water flows out from the treated water outflow portion toward the filtration surface, the possibility that the treated water hits the filtration surface and then flows outside the filter without passing through the filter is increased. . As a result, it is possible to prevent plankton or turbid components that cause clogging of the filter from adhering to the filter.
- the water treatment apparatus is configured to switch between the filtering operation for filtering the water to be treated and the cleaning operation for efficiently cleaning the filter. A higher cleaning effect can be obtained.
- the water treatment apparatus further includes a drive unit that rotates the filter, and the control unit controls the drive unit to thereby rotate the filter in the filtration operation, and The rotational speed of the filter in the cleaning operation is made different.
- the higher the rotation speed of the filter the wider the contact area between the water to be treated and the filtration surface per unit time, and a larger amount of water to be treated that can be filtered per unit time can be secured.
- the rotational speed of the filter increases, there is a possibility that a region where the water to be treated does not sufficiently contact will be generated in the filter, and the filter cannot be sufficiently cleaned.
- the water treatment device has a configuration in which the rotation speed of the filter in the filtration operation is different from the rotation speed of the filter in the cleaning operation, for example, in the filtration operation.
- a configuration is adopted in which the rotational speed of the filter is increased and the rotational speed of the filter in the cleaning operation is decreased.
- an opening for flowing out the treated water is formed in the treated water outflow portion, and the treated water from the opening further hits the filtration surface in the water treatment device.
- a discharge channel for discharging water existing outside the filter at a position within a predetermined range from the region and on the opening side with respect to the filter, and an inlet of the discharge channel is Directed to the area.
- Such a configuration increases the possibility that the deposits peeled off from the filter are guided to the drainage flow path together with the water to be treated, so that the deposits can be prevented from reattaching to the filter.
- the water treatment apparatus further includes a cleaning liquid outflow part for flowing out the cleaning liquid toward the filtration surface, and the control unit is configured such that the filter is rotating and the filtered water flow path is closed. And a cleaning liquid outflow operation in which the cleaning liquid flows out toward the filtration surface by the cleaning liquid outflow portion in a state where the outflow of the treated water is not performed by the treated water outflow portion, and the filtering operation And the cleaning operation are switched.
- the cleaning effect of the filter can be further enhanced by performing the cleaning liquid outflow operation as a separate process from the filtering operation and the cleaning operation.
- control unit applies a pressure to the inside of the filter by controlling a pump in the cleaning operation.
- the cleaning effect of the filter can be further enhanced by the configuration in which pressure is applied to the inside of the filter.
- the filtration surface is formed in a pleated shape bent along the radial direction of the rotation circle of the filter.
- Such a configuration ensures a large contact area between the water to be treated and the filtration surface per unit time without increasing the size of the entire filter, and increases the amount of water to be treated that can be filtered per unit time. be able to.
- the water treatment method according to the embodiment of the present invention includes a filter that is rotatable so that the filtration surface moves in the circumferential direction, and a treated water outflow portion that flows the treated water toward the filtration surface.
- a water treatment method in a water treatment device comprising a filtered water flow path for deriving filtered water that has passed through the filter from the inside of the filter, the step of starting the rotation of the filter, and the rotation of the filter
- the filtration operation in which the filtered water is led out from the filtrate water flow path, the filter is rotating, And, in a state where the filtered water flow path is closed, a step of switching between a cleaning operation in which the treated water flows out toward the filtration surface by the treated water outflow portion.
- the filtered water flow path is closed, so that the filtered water is accumulated in the filter without being guided to the filtered water flow path, and the inside of the filter is filled with the filtered water. Further, when the treated water flows out from the treated water outflow portion toward the filtration surface, the possibility that the treated water hits the filtration surface and then flows outside the filter without passing through the filter is increased. . As a result, it is possible to prevent plankton or turbid components that cause clogging of the filter from adhering to the filter.
- FIG. 1 is a diagram showing a configuration of a water treatment system including a water treatment apparatus according to an embodiment of the present invention.
- the water treatment system 201 performs filtration of, for example, ballast water loaded on a ship or ballast water discharged from a ship.
- the water treatment system 201 includes a water treatment device 101, an ultraviolet irradiation device 102, a pump 103, a valve 104, a seawater intake 105, a tank 106, and pipes 121, 122, 123, and 124.
- the water treatment system 201 shown in FIG. 1 includes a plurality of water treatment apparatuses 101
- the water treatment system 201 is not limited to the configuration including the plurality of water treatment apparatuses 101, and the water treatment system 201 includes one water treatment apparatus.
- the structure provided with the processing apparatus 101 may be sufficient.
- seawater flows as seawater to be treated from the seawater intake 105, and the water to be treated is pushed out by the pump 103 and supplied to the water treatment apparatus 101 through the pipe 121.
- the water treatment apparatus 101 filters the water to be treated using a filter in order to remove plankton or turbid components contained in the water to be treated supplied from the pump 103. Then, the water treatment apparatus 101 supplies filtered water to the ultraviolet irradiation apparatus 102 via the pipe 122.
- the ultraviolet irradiation device 102 sterilizes microorganisms contained in the filtered water by irradiating the filtered water supplied from the water treatment device 101 with ultraviolet rays. Then, the ultraviolet irradiation device 102 supplies filtered water after irradiation with ultraviolet rays to the tank 106 via the pipe 123. As a result, the ballast water after filtration and sterilization is stored in the tank 106.
- plankton or turbid components removed in the water treatment apparatus 101 are discharged to the outside of the ship or the like via the pipe 124.
- the water treatment system 201 may be used for filtering water to be treated other than ballast water loaded on a ship or ballast water discharged from a ship.
- FIG. 2 is a vertical sectional view showing the configuration of the water treatment apparatus according to the embodiment of the present invention.
- FIG. 3 is a horizontal sectional view showing the configuration of the section taken along the line III-III shown in FIG.
- the water treatment apparatus 101 includes a cartridge 11, a rotating shaft 12, a case 13, a motor (drive unit) 14, a control unit 15, a treated water channel 16, A treated water outflow portion 17, a filtered water flow path 18, a discharge flow path 19, and a valve 20 are included.
- the cartridge 11 is detachable from the case 13 and includes a filter 21, an upper lid portion 22, and a lower lid portion 23. In addition, an opening 24 through which the treated water flows out is formed in the treated water outflow portion 17.
- the filter 21 has a cylindrical shape, and is formed using, for example, a polyethylene nonwoven fabric.
- the filter 21 is rotatably attached so that the filtration surface moves in the circumferential direction around the rotation shaft 12. Further, the filter surface of the filter 21 is formed in a pleated shape that is bent so as to repeat a mountain and valley along the radial direction of the rotating circle.
- the upper lid part 22 closes the upper part of the filter 21, and the lower lid part 23 closes the lower part of the filter 21.
- the case 13 is provided so as to cover the entire cartridge 11.
- the motor 14 is connected to the rotating shaft 12 and rotates the filter 21 around the rotating shaft 12. *
- the treated water flow path 16 supplies the treated water pushed out by the pump 103 to the treated water outflow portion 17.
- the treated water outflow portion 17 extends from the treated water flow path 16 toward the inside of the case 13, and the treated water supplied from the treated water flow path 16 is directed from the opening 24 toward the filtration surface of the filter 21. Leaked.
- the opening 24 is formed, for example, in a rectangular shape extending thinly in the vertical direction.
- the control unit 15 controls driving of the motor 14, opening / closing of the valve 20, and driving of the pump 103.
- control unit 15 opens the valve 20 and drives the motor 14 and the pump 103.
- the water to be treated that flows out from the opening 24 of the water to be treated outflow portion 17 toward the filtration surface is filtered by permeating from the outside to the inside of the filter 21.
- the filtered water is guided to the filtered water flow path 18 provided inside the filter 21 and supplied from the filtered water flow path 18 to the other water treatment apparatus 101 or the ultraviolet irradiation apparatus 102 via the valve 20.
- Such an operation by the water treatment apparatus 101 is hereinafter referred to as a “filtration operation”.
- deposits that cause clogging of the filter 21 may be peeled off from the filter 21 when the water to be treated hits the filter 21. That is, in the filtration operation of the water treatment apparatus 101, the filter 21 may be cleaned in parallel with the filtration of the water to be treated. In such a case, the peeled off deposits flow to the bottom of the case 13 together with the water to be treated that has not passed through the filter 21. Then, the water to be treated that has flowed to the bottom of the case 13 and the deposits separated from the filter 21 are discharged to the outside of the water treatment apparatus 101 via the discharge flow path 19 and the pipe 124.
- control unit 15 closes the valve 20 and drives the motor 14 and the pump 103.
- the to-be-processed water which flowed out toward the filtration surface from the opening 24 of the to-be-processed water outflow part 17 is filtered by permeate
- cleaning operation Such an operation by the water treatment apparatus 101, that is, an operation for cleaning the deposits on the filter 21 without filtering the water to be treated is hereinafter referred to as a “cleaning operation”.
- the motor 14 does not necessarily have to be provided in the water treatment apparatus 101, but considering the relationship between the filtration speed and the cleaning effect of the filter 21 as described above, the water treatment apparatus 101 causes the motor 14 to operate. It is preferable that the rotational speed of the motor 14 is controllable.
- the control unit 15 of the water treatment apparatus 101 sets the flow rate of the water to be treated pushed out by the pump 103 and the rotation speed of the motor 14 to different values in each of the filtration operation and the washing operation. can do.
- control unit 15 controls the rotation speed of the motor 14 to be 50 rpm in the filtering operation. Moreover, the control part 15 is controlled so that the flow rate of the to-be-processed water pushed out by the pump 103 may be 7 m / s in filtration operation
- control unit 15 controls the rotation speed of the motor 14 to be 25 to 35 rpm in the cleaning operation. Further, the control unit 15 sets the flow rate of the water to be treated pushed out by the pump 103 in the cleaning operation so as to be about 10% faster than the flow rate of the water to be treated pushed out by the pump 103 in the filtration operation, that is, 7. Control to be about 7 m / s.
- FIG. 4 is a diagram for explaining the flow of operation of the water treatment apparatus according to the embodiment of the present invention.
- the water treatment apparatus 101 alternately repeats the filtering operation and the cleaning operation. For example, when the control unit 15 in the water treatment apparatus 101 drives the motor 14, the filter 21 starts rotating. Thereafter, the water treatment apparatus 101 repeats the operation flow of performing the filtering operation for 10 hours, switching to the cleaning operation, performing the cleaning operation for 1 hour, and switching to the filtering operation again to perform the filtering operation for 10 hours.
- control unit 15 in the water treatment apparatus 101 detects, for example, a differential pressure ⁇ P between the pressure outside the filter 21 and the pressure inside the filter 21.
- the control unit 15 is configured to switch from the filtering operation to the cleaning operation when the differential pressure ⁇ P exceeds a predetermined value, and to switch from the cleaning operation to the filtering operation when the differential pressure ⁇ P becomes less than the predetermined value. Also good.
- control unit 15 in the water treatment apparatus 101 detects, for example, the turbidity of filtrate water flowing through the filtrate water flow path 18.
- the control unit 15 may be configured to switch from the filtering operation to the cleaning operation when the detected turbidity is equal to or higher than a predetermined value, and to switch from the cleaning operation to the filtering operation when the turbidity becomes less than the predetermined value.
- the water treatment apparatus 101 may be configured to perform, for example, a filtering operation during the daytime and a cleaning operation at nighttime.
- FIG. 5 is a diagram showing a comparison result between a temporal change in the differential pressure ⁇ P of the filter in the water treatment apparatus according to the embodiment of the present invention and a temporal change in the differential pressure ⁇ P of the filter in another water treatment apparatus. is there.
- Graph A in FIG. 5 relates to an embodiment of the present invention in which, for example, after filtering operation is performed for 10 hours, switching to cleaning operation is performed for 1 hour, switching to filtering operation is performed again and filtering operation is performed for 10 hours.
- voltage (DELTA) P of the filter 21 in the water treatment apparatus 101 is shown.
- Graph B in FIG. 5 shows an operation of washing the filter by flowing water from the inside of the filter to the outside after performing the filtering operation for 10 hours (hereinafter referred to as “backwashing operation”) for 1 hour.
- backwashing operation shows the temporal change of the differential pressure ⁇ P of the filter in the water treatment apparatus X that performs the filtration operation for 10 hours by switching to the filtration operation again.
- the graph C of FIG. 5 shows the time change of the differential pressure
- DELTA differential pressure
- the water treatment apparatus 101, the water treatment apparatus X, and the water treatment apparatus Y are provided with the same filter capable of filtering at 40 t / min in a state where clogging does not occur, for example.
- the differential pressure ⁇ P increases as time passes.
- the increase in the differential pressure ⁇ P is slower in the filter of the water treatment device X than in the filter of the water treatment device Y.
- the increase in the differential pressure ⁇ P is slower in the filter 21 of the water treatment apparatus 101 than in the filter of the water treatment apparatus X.
- the time required for differential pressure ⁇ P to reach from 0 [kPa] to 10 [kPa] is approximately 1 in comparison with the time required for differential pressure ⁇ P to increase from 0 [kPa] to 10 [kPa] in graph B. .5 times to about twice as long.
- the water flow concentrates in an area where there is little clogging in the filter, so that only a part of the adhered matter on the filter is peeled off. There is a possibility that more deposits that are not formed remain.
- the water treatment apparatus X that alternately switches between the filtration operation and the backwash operation by alternately switching the filtration operation and the washing operation, and the washing Compared with the water treatment apparatus Y which does not perform any operation
- FIG. 6 is a diagram showing a part of the configuration of Modification 1 (No. 1) of the water treatment treatment according to the embodiment of the present invention.
- FIG. 7 is a figure which shows the structure of the to-be-processed water outflow part shown in FIG.
- the opening 24 formed in the to-be-processed water outflow part 17 is rectangular shape,
- the length of the perpendicular direction is It is shorter than the length of the filter 21 in the vertical direction. More preferably, the opening 24 has a length in the vertical direction that is short enough to form a flow path of the water to be treated after the water to be treated hits the filter 21.
- the opening 24 is provided at a height approximately at the center of the filter 21 in the vertical direction.
- the water to be treated flowing out from the opening 24 intensively hits the substantially central position in the vertical direction of the filter 21, and circulates in the filter 21 from the central position toward the upward and downward directions.
- a flow path is formed.
- the opening 24 only needs to be provided at such a height that a flow path that flows upward and a flow path that flows downward after the water to be treated hits the filter 21 are formed. Centering on the height of the center of the filter 21 in the vertical direction, the filter 21 is provided within a range of 10% above and below the length of the filter 21 in the vertical direction.
- the opening 24 shown in FIG. 7 is preferably formed to have the same area as the opening 24 shown in FIG. Thereby, the to-be-processed water which flows out from the opening 24 shown in FIG. 7 can be made into the same flow velocity as the to-be-processed water which flows out from the opening 24 shown in FIG. Further, the opening 24 may have a shape other than a rectangle.
- FIG. 8 is a diagram showing a part of the configuration of Modification 1 (No. 2) of the water treatment treatment according to the embodiment of the present invention.
- the shape of opening 24 is the same as that of opening 24 shown in FIG.
- the opening 24 is provided at a height that faces the lower side of the filter 21 in the vertical direction.
- the water to be treated flowing out from the opening 24 intensively hits the position on the lower side of the filter 21 in the vertical direction, and a flow path is formed from the lower position to the upper direction.
- attachment of the filter 21 can be made easy to flow out outside.
- FIG. 9 is a diagram showing a part of the configuration of Modification Example 1 (No. 3) of the water treatment treatment according to the embodiment of the present invention.
- the shape of opening 24 is the same as that of opening 24 shown in FIG.
- the opening 24 is provided at a height facing the upper side of the filter 21 in the vertical direction.
- the water to be treated flowing out from the opening 24 intensively hits the position on the upper side in the vertical direction of the filter 21, and a flow path is formed from the upper position to the lower direction.
- attachment of the filter 21 can be made easy to flow out outside.
- FIG. 10 is a horizontal cross-sectional view showing a part of the configuration of Modification 2 (No. 1) of the water treatment apparatus according to the embodiment of the present invention.
- Modification 2 (No. 1) of water treatment device 101 for example, a position within a predetermined range from region R where water to be treated from opening 24 hits the filtration surface, with respect to filter 21.
- the discharge channels 25 and 26 are provided on the opening 24 side, that is, in the direction of the arrow D opposite to the filter 21 with respect to the straight line L. These discharge flow paths 25 and 26 are provided on both sides of the treated water outflow portion 17 in the horizontal direction, for example.
- the inlet 25E of the discharge channel 25 and the inlet 26E of the discharge channel 26 are directed to the region R. That is, the inlets 25 ⁇ / b> E and 26 ⁇ / b> E are directed in the flow direction of the water to be treated when the water to be treated that has flowed out from the opening 24 circulates in the filter 21 after flowing into the filter 21 and flows to the outside of the filter 21. ing.
- the discharge flow paths 25 and 26 are connected to a discharge flow path 19 shown in FIG. 2, for example.
- the deposits peeled off from the filter 21 flow into the discharge channels 25 and 26 together with the water to be treated that is outside the filter 21 and is present in the case 13 without passing through the filter 21, and the like. Is discharged to the outside of the water treatment apparatus 101 through the discharge channel 19.
- FIG. 11 is a vertical cross-sectional view showing a part of the configuration of Modification 2 (No. 2) of the water treatment apparatus according to the embodiment of the present invention.
- Modification 2 (No. 2) of water treatment apparatus 101, for example, a position within a predetermined range from region R where water to be treated from opening 24 hits the filtration surface, and with respect to filter 21.
- the discharge channels 27 and 28 are provided on the opening 24 side, that is, in the direction of the arrow D opposite to the filter 21 with respect to the straight line L.
- These discharge flow paths 27 and 28 are respectively provided on the upper side and the lower side of the treated water outflow portion 17 in the vertical direction, for example.
- the opening 24 is provided at a substantially central height in the vertical direction of the filter 21, and the inlet 27 ⁇ / b> E of the discharge channel 27 and the inlet 28 ⁇ / b> E of the discharge channel 28 are directed to the region R. That is, the inlets 27 ⁇ / b> E and 28 ⁇ / b> E are directed in the flow direction of the water to be treated when the water to be treated that has flowed out from the opening 24 circulates in the filter 21 after flowing into the filter 21 and flows to the outside of the filter 21. ing.
- the water treatment apparatus 101 may have a configuration in which either the discharge channel 27 or the discharge channel 28 is provided. Further, the water treatment apparatus 101 is provided with a combination of at least one of the discharge flow path 25 and the discharge flow path 26 shown in FIG. 10 and at least one of the discharge flow path 27 and the discharge flow path 28 shown in FIG. It may be configured as described above.
- the discharge flow paths 27 and 28 are connected to, for example, a discharge flow path 19 shown in FIG.
- the deposits peeled off from the filter 21 flow into the discharge passages 27 and 28 together with the water to be treated existing outside the filter 21 and in the case 13 without passing through the filter 21. Is discharged to the outside of the water treatment apparatus 101 through the discharge channel 19.
- FIG. 12 is a vertical cross-sectional view showing a configuration of Modification 3 of the water treatment device according to the embodiment of the present invention.
- modification 3 of water treatment device 101 further includes chemical flow path 31, chemical outflow portion (cleaning liquid outflow portion) 32, and pump as compared with water treatment device 101 shown in FIG. 2. 33, a filter 34, a neutralization flow path 35, a neutralization processing unit 36, and valves 125, 126, and 127.
- the neutralization flow path 35 is connected to the discharge flow path 19 and the filtrate water flow path 18.
- the valve 125 is used to open and close the pipe 124
- the valve 126 is used to open and close the neutralization flow path 35
- the valve 127 is used to open and close the flow path from the discharge flow path 19 to the neutralization flow path 35. It is.
- the control unit 15 further controls driving of the pump 33 and opening / closing of the valves 125, 126, 127.
- control unit 15 drives the pump 33 so that the cleaning liquid containing the chemical that flows out from the chemical outflow unit 32 passes through the chemical channel 31, the treated water channel 16, and the treated water outflow unit 17 in the case 13.
- Such chemicals include sodium hypochlorite, chlorine dioxide or limonene.
- the control unit 15 closes the valve 20, stops driving the pump 103, and further drives the motor 14. Further, the control unit 15 closes the valve 125, the valve 126, and the valve 127.
- the chemical supplied into the case 13 is also transmitted into the filter 21 of the cartridge 11, and the deposit on the filter 21 is washed from the outside of the filter 21. Then, the cleaning liquid containing the chemical and the deposits separated from the filter 21 stay outside the filter 21 and are guided to the chemical flow path 31 by the pump 33. Then, the cleaning liquid and the adhering matter are filtered by the filter 34 and then refluxed into the case 13 via the chemical outflow portion 32 and the chemical flow path 31.
- the control device of the water treatment apparatus 101 monitors the chemical concentration and adjusts the monitored concentration. It may be configured to add chemicals accordingly.
- the time for performing the chemical circulation operation varies depending on the concentration of the chemical. For example, when the chemical concentration is about 300 ppm, the chemical circulation operation is performed for 5 hours or more.
- control unit 15 stops the driving of the pump 33 and terminates the chemical circulation operation, the chemical cannot be discharged as it is to the outside of the water treatment apparatus 101, so it is necessary to neutralize the cleaning liquid containing the chemical. There is. Therefore, the control unit 15 opens the valve 126 and the valve 127 and keeps the valve 20 and the valve 125 closed.
- the cleaning liquid that has passed through the filter 21 and accumulated in the filter 21, the cleaning liquid that has not permeated into the filter 21, and the deposits that have separated from the filter 21 and flowed to the outside of the filter 21 are neutralized.
- the water is supplied to the neutralization processing section 36 via the use flow path 35 or the discharge flow path 19, neutralized in the neutralization processing section 36, and then discharged to the outside of the water treatment apparatus 101.
- the water treatment procedure 101 according to the modified example 3 is switched from a filtering operation or a cleaning operation to a chemical circulation operation at a predetermined time, for example. And the water treatment apparatus 101 performs filtration operation
- the control unit 15 closes the valve 126 and the valve 127 and opens the valve 20 and the valve 125.
- FIG. 13 is a vertical direction sectional view which shows the structure of the modification 4 of the water treatment apparatus which concerns on embodiment of this invention.
- Modification 4 of the water treatment apparatus 101 further includes a pressure increasing path 41 and a pump 42 as compared with the water treatment apparatus 101 illustrated in FIG. 2.
- the pressure increasing path 41 is connected to the filtered water flow path 18.
- the control unit 15 further controls the driving of the pump 42 in addition to the driving of the motor 14, the opening / closing of the valve 20, and the driving of the pump 103.
- control unit 15 further drives the pump 42 in the cleaning operation, that is, in the state where the valve 20 is closed and the motor 14 and the pump 103 are driven.
- gas or liquid flows from the pump 42 into the filter 21 via the pressure increasing path 41 and the filtered water flow path 18, and the pressure inside the filter 21 increases.
- the controller 15 is not limited to the cleaning operation, and can apply pressure to the inside of the filter 21 by driving the pump 42 even in the chemical circulation operation described in the third modification, for example.
- the filter 21 is rotatable so as to move the filtration surface in the circumferential direction.
- the to-be-processed water outflow part 17 flows out to-be-processed water from the exterior of the filter 21 toward a filtration surface.
- the filtrate water flow path 18 guides filtrate water that has passed through the filter 21 from the inside of the filter 21.
- the control unit 15 performs a filtration operation in which the treated water is discharged toward the filtration surface by the treated water outflow unit 17 and the filtered water is led out from the filtered water flow path 18 in a state where the filter 21 is rotating. In the state where the filter 21 is rotating and the valve 20 is closed and the filtered water flow path 18 is closed, the cleaning operation in which the water to be treated flows out toward the filtration surface by the water to be treated 17 is switched.
- the filtered water flow path 18 is closed, so that the filtered water accumulates inside the filter 21 without being guided to the filtered water flow path 18, and the inside of the filter 21 is filled with the filtered water. . Further, when the treated water flows out from the treated water outflow portion 17 toward the filtration surface, the treated water can flow outside the filter 21 without passing through the filter 21 after hitting the filtration surface. Therefore, it is possible to prevent plankton or turbid components that cause clogging of the filter 21 from adhering to the filter 21.
- the inside of the filter 21 is filled with filtered water, turbid components already attached to the filter 21 are easily separated from the filter 21.
- the water treatment apparatus 101 has a higher cleaning effect on the filter 21 by switching between the filtering operation for filtering the water to be treated and the cleaning operation for efficiently cleaning the filter 21. Obtainable.
- control unit 15 controls the motor 14 that rotates the filter 21, so that the rotation speed of the filter 21 in the filtering operation and the filter 21 in the cleaning operation are controlled. Different rotation speed.
- the rotational speed of the filter 21 is higher, there is a possibility that a region where the water to be treated does not sufficiently hit is generated in the filter 21 and the filter 21 cannot be sufficiently cleaned.
- the water treatment apparatus 101 has a configuration in which the rotation speed of the filter 21 in the filtering operation is different from the rotation speed of the filter 21 in the cleaning operation, for example, The rotation speed of the filter 21 in the filtering operation is increased, and the rotation speed of the filter 21 in the cleaning operation is decreased.
- the filter 21 can ensure a large amount of water to be treated that can be filtered per unit time in the filtering operation, and can sufficiently clean the filter in the cleaning operation.
- the rotation speed can be controlled appropriately.
- the treated water outflow portion 17 is formed with an opening 24 for flowing out the treated water.
- at least one of the discharge flow paths 25, 26, 27, and 28 for discharging water existing outside the filter 21 is within a predetermined range from the region R where the water to be treated from the opening 24 hits the filtration surface. Which is provided at a position on the opening 24 side with respect to the filter 21. Further, the inlets of the discharge channels 25, 26, 27, 28 are directed to the region R.
- Such a configuration increases the possibility that the deposits separated from the filter 21 are guided to the drainage channel together with the water to be treated, so that the deposits can be prevented from adhering to the filter 21 again.
- the chemical outflow part 32 flows out the cleaning liquid toward the filtration surface.
- medical agent outflow part 32 is the state in which the control part 15 is rotating the filter 21, the filtered water flow path 18 is closed, and the to-be-processed water outflow part 17 is not flowing out.
- the chemical circulation operation in which the cleaning liquid flows out toward the filtration surface, the filtration operation, and the cleaning operation are switched.
- the cleaning effect of the filter 21 can be further enhanced by performing the chemical circulation operation as a separate process from the filtering operation and the cleaning operation.
- control unit 15 applies pressure to the inside of the filter 21 by controlling the pump 42 in the cleaning operation.
- the filtration surface is formed in a pleat shape that is bent along the radial direction of the rotation circle of the filter 21.
- Such a configuration ensures a large contact area between the water to be treated and the filtration surface per unit time without enlarging the entire filter 21, and increases the amount of water to be treated that can be filtered per unit time. can do.
- [Appendix 1] A filter rotatable so that the filtration surface moves in the circumferential direction; To-be-treated water outflow part for flowing out the to-be-treated water from the outside of the filter toward the filtration surface, A filtrate flow path for deriving filtered water that has passed through the filter from the inside of the filter; In a state where the filter is rotating, a filtration operation in which the treated water is discharged toward the filtration surface by the treated water outflow portion, and the filtered water is led out from the filtered water flow path; A control unit that switches between a washing operation in which the treated water flows out toward the filtration surface by the treated water outflow part in a state where the filtered water flow path is closed, and
- the said filter is a water treatment apparatus which is cylindrical shape, is formed using a polyethylene nonwoven fabric, and performs the filtration of the ballast water loaded into a ship, or the ballast water discharged
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Abstract
Description
12 回転軸
13 ケース
14 モータ(駆動部)
15 制御部
16 被処理水流路
17 被処理水流出部
18 濾過水流路
19,25,26,27,28 排出流路
25E, 26E,27E,28E 入口
20,104,125,126,127 バルブ
21 フィルタ
22 上蓋部
23 下蓋部
24 開口
31 薬品流路
32 薬品流出部(洗浄液流出部)
33,42,103 ポンプ
34 フィルタ
35 中和用流路
36 中和処理部
41 昇圧用経路
101 水処理装置
102 紫外線照射装置
105 海水取入口
106 タンク
121,122,123,124 配管
201 水処理システム
R 領域
L 直線
D 矢印
(水処理システム全体の構成)
図1は、本発明の実施の形態に係る水処理装置を含む水処理システムの構成を示す図である。
図2は、本発明の実施の形態に係る水処理装置の構成を示す垂直断面図である。また、図3は、図2に示すIII-III線断面の構成を示す水平断面図である。
ここで、ポンプ103により押し出される被処理水の流速が速いほど、フィルタ21のプリーツが広がり、フィルタ21の洗浄効果が高まることが期待される。しかしながら、当該流速が速いほど、フィルタ21が破損する可能性が高まる。このため、ポンプ103により押し出される被処理水の流速を適切に設定することが求められる。
次に、本発明の実施の形態に係る水処理装置101の動作の流れについて説明する。
ここで、フィルタにプランクトンまたは濁質分などが付着して目詰まりが生じると、フィルタの外部から内部への被処理水の透過が円滑に行われなり、フィルタの外部の圧力と、フィルタの内部の圧力との差圧ΔPは徐々に大きくなる。以下、フィルタの差圧ΔPの時間的変化について、本発明の実施の形態に係る水処理装置101と、他の水処理装置とを比較して説明する。
(a)その1
図6は、本発明の実施の形態に係る水処理処置の変形例1(その1)の構成の一部を示す図である。また、図7は、図6に示す被処理水流出部の構成を示す図である。
図8は、本発明の実施の形態に係る水処理処置の変形例1(その2)の構成の一部を示す図である。
図9は、本発明の実施の形態に係る水処理処置の変形例1(その3)の構成の一部を示す図である。
(a)その1
図10は、本発明の実施の形態に係る水処理装置の変形例2(その1)の構成の一部を示す水平方向断面図である。
図11は、本発明の実施の形態に係る水処理装置の変形例2(その2)の構成の一部を示す垂直方向断面図である。
図12は、本発明の実施の形態に係る水処理装置の変形例3の構成を示す垂直方向断面図である。
図13は、本発明の実施の形態に係る水処理装置の変形例4の構成を示す垂直方向断面図である。
濾過面が周方向に移動するように回転可能なフィルタと、
前記濾過面に向けて前記フィルタの外部から被処理水を流出する被処理水流出部と、
前記フィルタを透過した濾過水を前記フィルタの内部から導出するための濾過水流路と、
前記フィルタが回転している状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出され、前記濾過水流路から前記濾過水が導出される濾過動作と、前記フィルタが回転しており、かつ前記濾過水流路が閉じられた状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出される洗浄動作とを切り替える制御部とを備え、
前記フィルタは、円筒形状であって、ポリエチレン不織布を用いて形成され、船舶に積み込まれるバラスト水または船舶から排出されるバラスト水の濾過を行う、水処理装置。
Claims (7)
- 濾過面が周方向に移動するように回転可能なフィルタと、
前記濾過面に向けて前記フィルタの外部から被処理水を流出する被処理水流出部と、
前記フィルタを透過した濾過水を前記フィルタの内部から導出するための濾過水流路と、
前記フィルタが回転している状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出され、前記濾過水流路から前記濾過水が導出される濾過動作と、前記フィルタが回転しており、かつ前記濾過水流路が閉じられた状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出される洗浄動作とを切り替える制御部とを備える、水処理装置。 - 前記水処理装置は、さらに、
前記フィルタを回転させる駆動部を備え、
前記制御部は、前記駆動部を制御することにより、前記濾過動作における前記フィルタの回転速度と、前記洗浄動作における前記フィルタの回転速度とを異ならせる、請求項1に記載の水処理装置。 - 前記被処理水流出部には、前記被処理水を流出するための開口が形成され、
前記水処理装置は、さらに、
前記開口からの前記被処理水が前記濾過面に当たる領域から所定範囲内の位置であって、前記フィルタに対して前記開口側の位置に、前記フィルタの外部に存在する水を排出するための排出流路を備え、
前記排出流路の入口は、前記領域に向けられている、請求項1または請求項2に記載の水処理装置。 - 前記水処理装置は、さらに、
前記濾過面に向けて洗浄液を流出する洗浄液流出部を備え、
前記制御部は、前記フィルタが回転しており、前記濾過水流路が閉じられており、かつ前記被処理水流出部による前記被処理水の流出が行われていない状態において、前記洗浄液流出部によって前記濾過面に向けて前記洗浄液が流出される洗浄液流出動作と、前記濾過動作と、前記洗浄動作とを切り替える、請求項1から請求項3のいずれか1項に記載の水処理装置。 - 前記制御部は、前記洗浄動作において、ポンプを制御することにより、前記フィルタの内部に圧力を加える、請求項1から請求項4のいずれか1項に記載の水処理装置。
- 前記濾過面は、前記フィルタの回転円の径方向に沿って折り曲げられたプリーツ状に形成されている、請求項1から請求項5のいずれか1項に記載の水処理装置。
- 濾過面が周方向に移動するように回転可能なフィルタと、
前記濾過面に向けて被処理水を流出する被処理水流出部と、
前記フィルタを透過した濾過水を前記フィルタの内部から導出するための濾過水流路とを備える水処理装置における水処理方法であって、
前記フィルタの回転を開始するステップと、
前記フィルタが回転している状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出され、前記濾過水流路から前記濾過水が導出される濾過動作と、前記フィルタが回転しており、かつ前記濾過水流路が閉じられた状態において、前記被処理水流出部によって前記濾過面に向けて前記被処理水が流出される洗浄動作とを切り替えるステップとを含む、水処理方法。
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US15/101,567 US20160303496A1 (en) | 2014-01-08 | 2014-12-12 | Water treatment device and water treatment method |
CN201480066562.4A CN105792908A (zh) | 2014-01-08 | 2014-12-12 | 水处理装置和水处理方法 |
EP14877869.9A EP3093055A4 (en) | 2014-01-08 | 2014-12-12 | Water treatment device and water treatment method |
KR1020167014475A KR20160106049A (ko) | 2014-01-08 | 2014-12-12 | 수처리 장치 및 수처리 방법 |
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JP6296070B2 (ja) * | 2016-01-20 | 2018-03-20 | 住友電気工業株式会社 | バラスト水処理システムおよびその制御方法 |
CN109809608A (zh) * | 2019-03-27 | 2019-05-28 | 温州红旭市政工程建设有限公司 | 一种市政施工用污水处理设备 |
KR102160894B1 (ko) * | 2020-04-10 | 2020-09-29 | 주식회사 에싸 | 수중이물질을 여과, 분리, 탈수하는 다중구조의 여과장치 |
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KR20160106049A (ko) | 2016-09-09 |
JP2015128752A (ja) | 2015-07-16 |
CN105792908A (zh) | 2016-07-20 |
EP3093055A1 (en) | 2016-11-16 |
EP3093055A4 (en) | 2017-01-11 |
US20160303496A1 (en) | 2016-10-20 |
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