CN203474512U - Water treatment device - Google Patents
Water treatment device Download PDFInfo
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- CN203474512U CN203474512U CN201320550540.8U CN201320550540U CN203474512U CN 203474512 U CN203474512 U CN 203474512U CN 201320550540 U CN201320550540 U CN 201320550540U CN 203474512 U CN203474512 U CN 203474512U
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- water
- membrane module
- treatment device
- water treatment
- reverse osmosis
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Abstract
The utility model provides a water treatment device capable of inhibiting diffusion in a reverse osmosis membrane assembly to realize effective water treatment, and a running method of the water treatment method. The water treatment device (5) is provided with a microfiltration membrane assembly (17), the reverse osmosis membrane assembly (19) directly connected with the microfiltration membrane assembly (17) through a reverse osmosis (RO) liquid conveying pump (P1), and a penetration water supply pipeline (L2) for supplying penetration water penetrating through the reverse osmosis membrane assembly (19) to the primary side of the reverse osmosis membrane assembly (19). When the microfiltration membrane assembly (17 is subjected to backwashing, the penetration water supplied from the penetration water supply pipeline (L2) is guided into the primary side of the reverse osmosis membrane assembly (19), so that the electric conductivity difference between the primary side and the secondary side of the reverse osmosis membrane assembly (19) is reduced.
Description
Technical field
The utility model relates to the method for operation of water treatment device and water treatment device.
Background technology
With regard to the known filtering membrane that utilizes, from former water (processed water) such as river water, Lake Water or underground water, generated the water treatment device of processing water in the past.For example, the water treatment device of recording in patent documentation 1 possesses micro-filtration membrane module and the anti-membrane module that soaks into, micro-filtration membrane module is directly connected with the anti-membrane module that soaks into, utilizing micro-filtration membrane module to filter processed water, after generating primary treatment water, utilize the anti-membrane module that soaks into filter primary treatment water and generate secondary treatment water.
Prior art document
Patent documentation
Patent documentation 1: International Publication WO2010/084962 brochure
Utility model content
The problem that utility model will solve
But, micro-filtration membrane module and counter soaking in the direct-connected structure of membrane module, when carrying out the backwash of micro-filtration membrane module, stop supplying with primary treatment water to the anti-membrane module that soaks into.Now, soak in membrane module not being supplied to the counter of primary treatment water, between the anti-primary side and secondary side that soaks into film, can keep the state that specific conductivity is different.Because the existence of the difference of this specific conductivity can cause that impurity is from the anti-primary side of film that soaks into the diffusion of secondary side, therefore, can cause the processing electrical conductivity of water of secondary side higher than the problem of desired value., restarting to anti-when soaking into membrane module and supplying with primary treatment water thereafter, from counter soak into that membrane module supplies with see through electrical conductivity of water higher than desired value.Until that specific conductivity reaches desired value is following, supply to see through water be uncomfortable Heshui, therefore, have to discard, possibly cannot realize effective water treatment.
The utility model, for having addressed the above problem, can suppress thereby object is to provide a kind of water treatment device and the method for operation that anti-diffusion of soaking in membrane module can realize effective water treatment.
In order to solve above-mentioned problem, water treatment device of the present utility model has filtration unit and the anti-membrane module that soaks into being connected with this filtration unit via pump, it is characterized in that, this water treatment device possesses and to the anti-primary side that soaks into membrane module, sees through water supply pipeline by having seen through the anti-water supply that sees through of soaking into membrane module, when carrying out the backwash of filtration unit, the water that sees through by seeing through the supply of water supply pipeline is imported to the anti-primary side that soaks into membrane module.
In this water treatment device, possess and to the anti-primary side that soaks into membrane module, see through water supply pipeline by having seen through the anti-water supply that sees through of soaking into membrane module.In such structure, water treatment device, when carrying out the backwash of filtration unit, imports the anti-primary side that soaks into membrane module by the water that sees through by seeing through the supply of water supply pipeline.Thus, can be suppressed at while implementing backwash in filtration unit, to the anti-membrane module that soaks into, supply with after processed water stopping, in the diffusion of the anti-impurity causing due to anti-difference of soaking into the primary side of film and the specific conductivity of secondary side in soaking into membrane module.Thus, uncomfortable Heshui can be do not generated, effective water treatment can be realized.
In one embodiment, when carrying out the backwash of filtration unit, the water that sees through by seeing through the supply of water supply pipeline is imported to the anti-primary side that soaks into membrane module, making anti-difference of soaking into the primary side of film and the specific conductivity of secondary side is below 50 μ S/cm.Like this, by making the difference of specific conductivity, be below 50 μ S/cm, can suppress better anti-diffusion of soaking in film.
In one embodiment, see through water supply pipeline and also to the secondary side of filtration unit, supply with and see through water, will see through the backwash of water for filtration unit.According to this structure, owing to seeing through water for the backwash of filtration unit by what generate in water treatment procedure, therefore do not need to prepare the backwash water of filtration unit.Thus, can realize more effective water treatment.
In one embodiment, this water treatment device possesses the condensed water supply line that the condensed water of discharging from the anti-primary side that soaks into membrane module is supplied to the secondary side of filtration unit, the backwash by condensed water for filtration unit.Like this, by the backwash for filtration unit by condensed water that originally will be discarded, do not need to prepare backwash water, therefore, can realize more effective water treatment.
In one embodiment, this water treatment device possesses the condensed water supply line that the condensed water of discharging from the anti-primary side that soaks into membrane module is supplied to the secondary side of filtration unit, see through water supply pipeline and also to the secondary side of filtration unit, supply with and see through water, will see through the backwash for filtration unit of water and condensed water.Thus, can guarantee fully the water yield for backwash, and can reduce and process the rear usage quantity that sees through water, therefore, can realize more effective water treatment.
In one embodiment, this water treatment device possess store seen through counter soak into membrane module see through water see through water storagetank, the upstream side that sees through water supply pipeline is connected in through water storagetank.According to such structure, can stably supply with through water.
In one embodiment, filtration unit is micro-filtration membrane module and/or sand filtering device.According to such structure, can supply with and to utilize micro-filtration membrane module and/or sand filtering device to carry out the primary treatment water after clarificationization to the anti-membrane module that soaks into.
Method of operation of the present utility model is to have filtration unit and via pump and the direct-connected anti-method of operation of soaking into the water treatment device of membrane module of this filtration unit, it is characterized in that, when carrying out the backwash of filtration unit, by having seen through the anti-water that sees through that soaks into membrane module, import this anti-primary side that soaks into membrane module, reduce specific conductivity poor of this primary side and the anti-secondary side that soaks into membrane module.
The effect of utility model
According to the utility model, can suppress anti-diffusion of soaking in membrane module, can realize effective water treatment.
Accompanying drawing explanation
Fig. 1 is the figure of structure of the water treatment system of the schematically illustrated water treatment device that comprises the first embodiment;
Fig. 2 is the figure of structure of the water treatment system of the schematically illustrated water treatment device that comprises the second embodiment;
Fig. 3 is the figure of structure of the water treatment system of the schematically illustrated water treatment device that comprises the 3rd embodiment.
Nomenclature
1,1A, 1B: water treatment device
L2, L6: see through water supply pipeline
L4: condensed water supply line
17:MF membrane module (micro-filtration membrane module)
19:RO membrane module (the anti-membrane module that soaks into)
21: storagetank (seeing through water storagetank)
P2:RO liquid-feeding pump
Embodiment
Below, with reference to accompanying drawing, preferred implementation of the present utility model is elaborated.It should be noted that, in accompanying drawing explanation, in identical or corresponding element annotation same-sign, the repetitive description thereof will be omitted.
[the first embodiment]
Fig. 1 is the figure of structure of the water treatment system of the schematically illustrated water treatment device that comprises the first embodiment.As shown in Figure 1, water treatment system 1 possesses pre-treatment portion 3, water treatment device 5 and aftertreatment portion 7.
Water treatment device 5 comprises microfiltration membrane (below also referred to as MF (Microfiltlation) film) assembly (filtration unit) 17, instead soaks into film (below also referred to as RO (Reverse Osmosis) film) assembly 19 and storagetank (seeing through water storagetank) 21 and form.Utilize MF liquid-feeding pump P1 to MF membrane module 17, to supply with pre-treatment water from storagetank 13.MF membrane module 17 filters pre-treatment water and generates primary treatment water.MF membrane module 17 also can consist of with unit form a plurality of MF membrane modules.
Utilize RO liquid-feeding pump P2 to supply with primary treatment water to RO membrane module 19.RO membrane module 19 generates the primary treatment water filtration of supplying with from MF membrane module 17 secondary treatment water (hereinafter referred to as seeing through water) and is supplied to storagetank 21.RO membrane module 19 also can consist of with unit form a plurality of RO membrane modules.MF membrane module 17 and RO membrane module 19 for example also can be incorporated in container (container).
Storagetank 21 is connected with connecting pipeline L1 by seeing through water supply pipeline L2.See through water supply pipeline L2 and be and see through water supply to the pipeline of the primary side of RO membrane module 19 by what see through RO membrane module 19 and be stored in storagetank 21.See through water supply pipeline L2 and be connected in the upper downstream side of MF membrane module 17 of connecting pipeline L1 and the upstream side of RO liquid-feeding pump P2.The water that sees through of storagetank 21 is supplied to connecting pipeline L1 by liquid-feeding pump P3 via seeing through water supply pipeline L2.In seeing through water supply pipeline L2, in the downstream side of liquid-feeding pump P3, be provided with valve B1.It should be noted that, see through water supply pipeline L2 and also can be connected in the downstream side of RO liquid-feeding pump P2.
Discharging the escape route L3 of condensed water from RO membrane module 19, be connected with condensed water supply line L4.Condensed water supply line L4 is supplied to condensed water the pipeline of the secondary side of MF membrane module 17, and L1 is connected with connecting pipeline.Condensed water supply line L4 is connected in the downstream side of the upper MF membrane module 17 of connecting pipeline L1 and sees through the upstream side of the connection portion (RO liquid-feeding pump P2) of water supply pipeline L2.On condensed water supply line L4, be provided with valve B4.In connecting pipeline L1, between through the connection portion of water supply pipeline L2 and the connection portion of condensed water supply line L4, be provided with valve B2.In escape route L3, in the downstream side of the connection portion of condensed water supply line L4, be provided with valve B3.
In addition, seeing through water supply pipeline L2 is connected by connecting pipeline L5 with condensed water supply line L4.Connecting pipeline L5 supplies with and sees through water to condensed water supply line L4 from seeing through water supply pipeline L2.On connecting pipeline L5, be provided with valve B5.
Aftertreatment portion 7 possesses exchange resin tower 23 and pure water groove 25.By RO film unit 8, process also interim storage, in the water that sees through of storagetank 21, carries out flowing into pure water groove 25 after ion-exchange in exchange resin tower 23.
In having the water treatment system 1 of said structure, pre-treatment water the past handling part 3 is supplied to the MF membrane module 17 of water treatment device 5, then by MF membrane module 17 and RO membrane module 19, generates thus and sees through water.Now, in water treatment device 5, for example, by being that the primary treatment water of 280 μ S/cm imports RO membrane module 19 and this primary treatment water is processed by specific conductivity, can generate specific conductivity is the water that sees through below 11 μ S/cm.It should be noted that, specific conductivity utilizes not shown survey meter to measure.In addition, now, if the rate of recovery of RO membrane module 19 is set as to 70%, the concentrated electrical conductivity of water of discharging from RO membrane module 19 is 933 μ S/cm.Therefore, in the situation that implemented the backwash of MF membrane module 17 under this state, between the primary side and secondary side of RO membrane module 19, may produce specific conductivity poor of 922 μ S/cm.
Action during next, to the backwash of the MF membrane module 17 in water treatment device 5 describes.When carrying out the backwash of MF membrane module 17, first, in shut-off valve B, B2, B3, relief valve B1, B4, B5.Then, utilize liquid-feeding pump P2 and RO liquid-feeding pump P2, will be through water supply to RO membrane module 19 via seeing through water supply pipeline L2.
Now, a part (for example 1/2 amount) that sees through water of supplying with from storagetank 21 is supplied to RO membrane module 19.Thus, by the primary treatment water of the primary side of RO membrane module 19 being replaced into through water or processing water and mix through water, the processing electrical conductivity of water of primary side diminishes.Preferably make the difference of the primary side of RO membrane module 19 and the specific conductivity of secondary side for for example below 50 μ S/cm.
In addition, see through water and be supplied to RO membrane module 19, thus, for example, from the condensed water of RO membrane module 19 discharges and a part (1/2 amount) that sees through water of supplying with via connecting pipeline L5, via condensed water supply line L4, be supplied to the secondary side of MF membrane module 17.Carry out thus the backwash of MF membrane module 17.Implement as described above the backwash of MF membrane module 17.It should be noted that, when carrying out the backwash of MF membrane module 17, to the primary side of RO membrane module 19, supply with the operation that sees through water and needn't all implement when each backwash, in implementing backwash for several times, carry out once.
As mentioned above, in the present embodiment, possess the water supply that sees through that has seen through RO membrane module 19 is seen through to water supply pipeline L2 to the primary side of RO membrane module 19.In such structure, while carrying out the backwash of MF membrane module 17 in water treatment device 5, will be from seeing through the primary side that water imports RO membrane module 19 that sees through that water supply pipeline L2 supplies with, thus the difference of specific conductivity of the secondary side of this primary side and RO membrane module 19 is diminished.Thus, can be suppressed at while implementing backwash in MF membrane module 17, after the supply stopping from the primary treatment water of MF membrane module 17, the diffusion causing across the difference of the primary side of RO film 19A and the specific conductivity of secondary side in RO membrane module 19.Therefore, due to the generation of uncomfortable the Heshui more than specific conductivity that can suppress to stipulate, so can effectively carry out water treatment.
In addition, in the present embodiment, by the condensed water of discharging from RO membrane module 19 and the backwash for MF membrane module 17 through water that is stored in storagetank 21.Like this, by by be used for the backwash of MF membrane module 17 through water and condensed water that originally will be discarded, can guarantee fully the necessary water yield of backwash, and needn't prepare backwash water, utilize the water generating in the process of water treatment can implement backwash.Therefore, can realize effective water treatment.
In addition, liquid-feeding pump P3 is for supplying with through water and MF membrane module 17 is carried out to backwash to seeing through water supply pipeline L2.Like this, by utilizing liquid-feeding pump P2 to see through supply and the backwash of water, can realize the simplification of equipment.
[the second embodiment]
Below, the water treatment device of the second embodiment is described.Fig. 2 is the figure of structure of the water treatment device of the schematically illustrated water treatment device that comprises the second embodiment.As shown in Figure 2, the structure of the water treatment device 5A of water treatment system 1A is different from the first embodiment.
In water treatment device 5A, storagetank 21 is connected with connecting pipeline L1 by seeing through water supply pipeline L2.See through water supply pipeline L2 and be and see through water supply to the pipeline of the primary side of RO membrane module 19 by what seen through RO membrane module 19 and be stored in storagetank 21.See through water supply pipeline L2 and be connected in the upper downstream side of MF membrane module 17 of connecting pipeline L1 and the upstream side of RO liquid-feeding pump P2.The water that sees through of storagetank 21 is supplied to connecting pipeline L1 by liquid-feeding pump P3 via seeing through water supply pipeline L2.Seeing through on water supply pipeline L2, in the downstream side of liquid-feeding pump P3, be provided with valve B1.It should be noted that, see through water supply pipeline L2 and also can be connected in the downstream side of RO liquid-feeding pump P2.
Discharging the escape route L3 of condensed water from RO membrane module 19, be connected with condensed water supply line L4.Condensed water supply line L4 supplies with the pipeline of condensed water to the secondary side of MF membrane module 17, L1 is connected with connecting pipeline.Condensed water supply line L4 is connected in the downstream side of the upper MF membrane module 17 of connecting pipeline L1 and sees through the upstream side of the connection portion (RO liquid-feeding pump P2) of water supply pipeline L2.On condensed water supply line L4, be provided with valve B4.In connecting pipeline L1, seeing through between the connection portion of water supply pipeline L2 and the connection portion of condensed water supply line L4, be provided with valve B2.In escape route L3, in the downstream side of the connection portion of condensed water supply line L4, be provided with valve B3.
Below, the action during to the backwash of the MF membrane module 17 in water treatment device 5A describes.When carrying out the backwash of MF membrane module 17, first, in shut-off valve B, B2, B3, relief valve B1, B4.Then, utilize liquid-feeding pump P2 and RO liquid-feeding pump P2, will be through water supply to RO membrane module 19 via seeing through water supply pipeline L2.
Thus, by the primary treatment water of the primary side of RO membrane module 19 being replaced into through water, maybe will processing water and mix through water, the processing electrical conductivity of water of primary side diminishes.Preferably make the difference of the primary side of RO membrane module 19 and the specific conductivity of secondary side for for example below 50 μ S/cm.
In addition, see through water and be supplied to RO membrane module 19, thus, the condensed water of discharging from RO membrane module 19 is supplied to the secondary side of MF membrane module 17 via escape route L3 and condensed water supply line L4.Carry out thus the backwash of MF membrane module 17.Implement as described above the backwash of MF membrane module 17.It should be noted that, when carrying out the backwash of MF membrane module 17, to the primary side of RO membrane module 19, supply with the operation that sees through water and needn't all implement when each backwash, in implementing backwash for several times, carry out once.
[the 3rd embodiment]
Below, the 3rd embodiment is described.Fig. 3 is the figure of structure of the water treatment system of the schematically illustrated water treatment device that comprises the 3rd embodiment.As shown in Figure 3, the structure of the water treatment device 5B of water treatment system 1B is different from first and second embodiment.
In water treatment device 5B, storagetank 21 is connected with connecting pipeline L1 by seeing through water supply pipeline L6.See through water supply pipeline L2 and be and see through water supply to the primary side of RO membrane module 19 and the pipeline of MF membrane module 17 by what seen through RO membrane module 19 and be stored in storagetank 21.Seeing through on water supply pipeline L6, be provided with the first branch line L6a and the second branch line L6b.
The first branch line L6a is connected in the downstream side of the upper RO liquid-feeding pump P2 of connecting pipeline L1.The first branch line L6a is provided with valve B6.The second branch line L6b is connected in the upstream side of the upper RO liquid-feeding pump P2 of connecting pipeline L1.The second branch line L6a is provided with valve B7.
Below, the action during to the backwash of the MF membrane module 17 in water treatment device 5B describes.When carrying out the backwash of MF membrane module 17, first, in shut-off valve B, B2, B7, relief valve B6.Then, utilize liquid-feeding pump P2, via seeing through water supply pipeline L6 and the first branch line L6a, will be through water supply to RO membrane module 19.It should be noted that, see through water supply pipeline L6a and also can be connected in the upstream side of RO liquid-feeding pump P2.
Thus, by the primary treatment water of the primary side of RO membrane module 19 being replaced into through water, maybe will processing water and mix through water, the processing electrical conductivity of water of primary side diminishes.Preferably make the difference of the primary side of RO membrane module 19 and the specific conductivity of secondary side for for example below 50 μ S/cm.
Next, shut-off valve B6, simultaneously relief valve B7.Then, utilize liquid-feeding pump P2 via seeing through water supply pipeline L6 and the second branch line L6b, will see through the secondary side of water supply to MF membrane module 17.Carry out thus the backwash of MF membrane module 17.Implement as described above the backwash of MF membrane module 17.It should be noted that, when carrying out the backwash of MF membrane module 17, to the primary side of RO membrane module 19, supply with the operation that sees through water and needn't all implement when each backwash, in implementing backwash for several times, carry out once.
The utility model is not limited to above-mentioned embodiment.The utility model can carry out various distortion in the scope that does not depart from its aim.For example, MF membrane module 17 can consist of filtration units such as sand filtering devices.In addition, also can combine MF membrane module and sand filtering device etc. forms.Sand filtering device and MF membrane module similarly can make pre-treatment water become primary treatment water, also can similarly carry out backwash with MF membrane module.Therefore, in the above-described embodiment, MF membrane module can be replaced into sand filtering device and implement the utility model.The utility model is so long as by the structure to the primary side of RO membrane module 19 through water supply after utilizing RO membrane module 19 to filter.
Claims (8)
1. a water treatment device, its have filtration unit with via pump and the reverse osmosis membrane assembly that this filtration unit is connected, it is characterized in that,
This water treatment device possess by seen through described reverse osmosis membrane assembly see through water supply to the primary side of described reverse osmosis membrane assembly see through water supply pipeline,
When carrying out the backwash of described filtration unit, will see through the primary side that water imports described reverse osmosis membrane assembly by described see through that water supply pipeline supplies with described.
2. water treatment device as claimed in claim 1, is characterized in that, described filtration unit and described reverse osmosis membrane assembly by liquid-tight property seal.
3. water treatment device as claimed in claim 1 or 2, is characterized in that,
When carrying out the backwash of described filtration unit, will see through the primary side that water imports described reverse osmosis membrane assembly by described see through that water supply pipeline supplies with described, the difference that makes the described primary side of described reverse osmosis membrane and the specific conductivity of secondary side is below 50 μ S/cm.
4. water treatment device as claimed in claim 1 or 2, is characterized in that,
The described water supply pipeline that sees through is also supplied with the described water that sees through to the secondary side of described filtration unit,
By the described backwash for described filtration unit through water.
5. water treatment device as claimed in claim 1 or 2, is characterized in that,
This water treatment device possesses the condensed water supply line that the condensed water of discharging from the described primary side of described reverse osmosis membrane assembly is supplied to the secondary side of described filtration unit,
Backwash by described condensed water for described filtration unit.
6. water treatment device as claimed in claim 1 or 2, is characterized in that,
This water treatment device possesses the condensed water supply line that the condensed water of discharging from the described primary side of described reverse osmosis membrane assembly is supplied to the secondary side of described filtration unit,
The described water supply pipeline that sees through is also supplied with the described water that sees through to the secondary side of described filtration unit,
By described water and the described condensed water of seeing through for the backwash of described filtration unit.
7. water treatment device as claimed in claim 1 or 2, is characterized in that,
This water treatment device possess store that seen through described reverse osmosis membrane assembly described see through water see through water storagetank,
The described upstream side that sees through water supply pipeline is connected in the described water storagetank that sees through.
8. water treatment device as claimed in claim 1 or 2, is characterized in that,
Described filtration unit is micro-filtration membrane module and/or sand filtering device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-203228 | 2012-09-14 | ||
| JP2012203228A JP2014057911A (en) | 2012-09-14 | 2012-09-14 | Water treatment apparatus and operational method of water treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203474512U true CN203474512U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320550540.8U Expired - Fee Related CN203474512U (en) | 2012-09-14 | 2013-09-05 | Water treatment device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014057911A (en) |
| CN (1) | CN203474512U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6428017B2 (en) * | 2014-07-23 | 2018-11-28 | 栗田工業株式会社 | Water treatment apparatus and water treatment equipment cleaning method |
| JP6879814B2 (en) * | 2017-04-28 | 2021-06-02 | 株式会社日立製作所 | Reverse osmosis device and seawater desalination plant equipped with it |
-
2012
- 2012-09-14 JP JP2012203228A patent/JP2014057911A/en active Pending
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2013
- 2013-09-05 CN CN201320550540.8U patent/CN203474512U/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JP2014057911A (en) | 2014-04-03 |
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Effective date of registration: 20160420 Address after: Tokyo, Japan, Japan Patentee after: Asahi Kasei Kogyo K. K. Address before: Tokyo, Japan, Japan Patentee before: Asahi Kasei Chemical K. K. |
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