CN109311705A - Oil-containing waste water treating device and the oily wastewater treatment method for using the device - Google Patents
Oil-containing waste water treating device and the oily wastewater treatment method for using the device Download PDFInfo
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- CN109311705A CN109311705A CN201880002262.8A CN201880002262A CN109311705A CN 109311705 A CN109311705 A CN 109311705A CN 201880002262 A CN201880002262 A CN 201880002262A CN 109311705 A CN109311705 A CN 109311705A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 86
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 172
- 239000012528 membrane Substances 0.000 claims abstract description 85
- 239000000839 emulsion Substances 0.000 claims abstract description 68
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 34
- 239000012535 impurity Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 14
- 238000005374 membrane filtration Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 47
- 239000007787 solid Substances 0.000 claims description 29
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000002033 PVDF binder Substances 0.000 claims description 13
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920006350 polyacrylonitrile resin Polymers 0.000 claims description 5
- 229920006361 Polyflon Polymers 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
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- 239000004810 polytetrafluoroethylene Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
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- 239000002440 industrial waste Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/16—Feed pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/10—Spiral-wound membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of oil-containing waste water treating device and the oily wastewater treatment method using the device, the present invention can successfully carry out wastewater treatment and reduce processing cost, it can be by purification of waste water to the discharge standard value for being equal to or less than commons water area, so as to realize the less wastewater treatment of effect on environment.Oil-containing waste water treating device 1 includes: a filter portion 7, executes hyperfiltration treatment containing oil emulsion to what is contained in oily waste water, is oil and single treatment water by oil-containing emulsion separation；Aflter-fillter portion 8, to by an above-mentioned filter-portion from single treatment water execute use reverse osmosis membrane filtration treatment, single treatment water is separated into the low molecular weight impurities not removed in a filter portion and secondary treatment water.An above-mentioned filter portion 7 is the filter with the ultrafiltration membrane filter structure of tubulose membrane type or helical form membrane type, also, above-mentioned aflter-fillter portion 8 is with the filter by filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane.
Description
Technical field
The present invention relates to oil-containing waste water treating device and using the device oily wastewater treatment method, more particularly to
Enough carry out the oil-containing waste water treating device that lesser wastewater treatment is adversely affected to environment and the oily waste water using the device
Processing method.
Background technique
In the manufacturing process of automobile component etc., improve lubrication using the oil of cutting oil etc. when carrying out intermetallic composite coating
Property.In general, oil is coated to processing metal surface on one side, intermetallic composite coating is carried out on one side, but since oil is readily burned, it can so having
Fire hazard.
Therefore, in recent years using water-soluble grease (metal working oil).The grease is that surfactant etc. is used as medium
Water and oil mixture.
The water-soluble grease, which used, to be difficult to carry out waste treatment, as waste treatment method using evaporation water or
Oil is set to become misty and the methods of be burnt with incinerator.
However, evaporation mode or the processing method burnt etc. is carried out in incinerator, because the moisture content of oily waste water is high,
A large amount of energy is needed in burning etc., so having the problem of processing cost increase.In addition, the oil of recycling is carried out at burning
A large amount of carbon dioxide (CO is generated when reason2), therefore, there is the problem of having an adverse effect to environment.
As the processing method of the oily waste water, patent document 1 discloses a kind of processing side using centrifugal separating device
Method, which is separated to la m (upper layer) for the smallest oil of specific gravity, the maximum sludge of specific gravity is separated to outer layer (under
Layer), emulsion (emulsion) is separated to middle layer, in addition, the filter device by downstream carries out UF membrane to emulsion.
It, can be by the oil that contains in filter device separating emulsion, and as containing according to this processing method
The low oil of water rate is recycled.
Therefore, the energy needed for the processes such as burning when destroying recycled oil can be reduced, to inhibit to be processed into
This.Furthermore, it is possible to generated carbon dioxide (CO when reducing burning disposal2) amount.
Existing technical literature
Patent document
Patent document 1: Japanese " Japanese Laid-Open Patent Publication 5-245471 " patent gazette
Summary of the invention
The technical problems to be solved by the invention
However, in patent document 1 in disclosed processing method, when carrying out membrane separation to emulsion, ceramics separation
Film uses the anisotropic membrane of aluminium oxide, zirconium oxide etc..
However, above-mentioned ceramic separation film was the oil strain particle (film of the degree of number nm to tens of nm), therefore, it is impossible to remove
Low molecular weight impurities (for example, surfactant, antirust agent, low molecular weight sodium etc.), having can not be by purification of waste water to can be to river
The technical issues of flowing level (equal to or less than the discharge standard value of commons water area) of discharge.
In addition, there is also such technical problems, that is, oil film is attached to the film surface of above-mentioned ceramic separation film, in early stage rank
Duan Yinqi blocking, to separate oil and water with can not be successfully.
The present invention has been made in view of the above problems, its purpose is to provide a kind of oil-containing waste water treating device and makes
With the oily wastewater treatment method of the device, it can successfully carry out wastewater treatment and reduce processing cost, it can be net by waste water
Change to the discharge standard value for being equal to or less than commons water area, so as to realize the less wastewater treatment of effect on environment.
Technical means to solve problem
To solve the above problems, oil-containing waste water treating device of the invention be it is a kind of for by oily waste water be separated into oil and
The device of water characterized by comprising a filter portion, it is super to the execution containing oil emulsion contained in above-mentioned oily waste water
Oil-containing emulsion separation is oil and single treatment water by filter processing；Aflter-fillter portion, to by an above-mentioned filter-portion
From single treatment water execute use reverse osmosis membrane filtration treatment, single treatment water is separated into not in a filter portion
The low molecular weight impurities and secondary treatment water of removing, wherein an above-mentioned filter portion is with tubulose membrane type or helical form film
The filter of the ultrafiltration membrane filter structure of formula, also, above-mentioned aflter-fillter portion is with anti-by overlying multiple layers disc-shaped
The filter of filtration device structure made of permeable membrane.
Oil-containing waste water treating device according to the present invention can be removed by a filter portion with ultrafiltration structure and be deoiled
Point, and it is miscellaneous to remove the low molecular weight as surfactant by the aflter-fillter portion with reverse osmosis membrane structure
Matter.That is, can by oily waste water purify to equal than or less than commons water area discharge standard value.
Especially since a filter portion uses the ultrafiltration membrane filter structure with tubulose membrane type or helical form membrane type
Filter, therefore, containing oil emulsion with high flow rate (linear velocity) along the surface flow of ultrafiltration membrane.As a result, it is possible to inhibit oil
Divide and be attached on ultrafiltration film surface, so as to inhibit the blocking of film.
Further, since aflter-fillter portion filter knot made of having and passing through overlying multiple layers disc-shaped reverse osmosis membrane
Therefore the filter of structure can be improved the operating pressure of film, can remove the low molecular weight impurities such as surfactant, Neng Gouti
Highly concentrated shrinkage.
Also, in the above-mentioned filter having through filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane, with
Similarly, single treatment water, with high flow rate (linear velocity) flowing, therefore, is able to suppress low along the surface of film in filter portion
Molecular weight impurity is attached on film surface, to inhibit the blocking of film.
As noted previously, as having used a filter portion and aflter-fillter portion for specific structure, contain oil emulsion, one
Secondary processing water, with high flow rate (linear velocity) flowing, therefore, can be carried out along the surface of film in the case where inhibiting the blocking of film
Wastewater treatment.As a result, wastewater treatment can be carried out successfully for a long time.
Also, oil can be concentrated in a filter portion, and being capable of condensing surfaces work in aflter-fillter portion
Therefore the low molecular weight impurities such as property agent can reduce processing cost.
Here, it is preferable that having: single treatment slot, storage is above-mentioned to contain oil emulsion, contains to a filter portion supply
Oil emulsion, and store from what a filter portion returned and contain oil emulsion；Secondary treatment slot is stored by an above-mentioned filter
The single treatment water of portion's processing supplies single treatment water to aflter-fillter portion, and stores one returned from aflter-fillter portion
Secondary processing water.
Contain oil emulsion as described above, being stored in single treatment slot from what a filter portion returned, and again to one
Therefore secondary filter portion supply can be concentrated containing oil emulsion containing oil emulsion.
Moreover, similarly, the single treatment water returned from aflter-fillter portion is stored in secondary treatment slot, and again to
Therefore aflter-fillter portion supply single treatment water can reduce the amount of the final process liquid of waste treatment to be carried out.
It is further preferred, that having separation of solid and liquid portion, which is isolated solid by above-mentioned oily waste water and is contained
Oil emulsion, and contain oil emulsion to the supply of above-mentioned single treatment slot.
The separation of solid and liquid portion is, for example, centrifugal separator, be can be set in oil-containing waste water treating device.Alternatively, can also be with
Set separation of solid and liquid portion (centrifugal separator) in the individual device separated with oil-containing waste water treating device, it will be by being separated by solid-liquid separation
Portion's (centrifugal separator) separation is supplied to above-mentioned single treatment slot containing oil emulsion.
Preferably, by above-mentioned aflter-fillter part from secondary treatment water meet the discharge standard of commons water area.
Additionally, it is preferred that being, the film for an above-mentioned filter portion is by polyvinylidene fluoride resin (PVDF), polytetrafluoroethyl-ne
Any one of olefine resin (PTFE), polyacrylonitrile resin (PAN) are made, and molecular cut off is 1 × 104Da (dalton) with
It is upper and 5 × 105Da (dalton) is below.
As noted previously, as film is by polyvinylidene fluoride resin (PVDF), polyflon (PTFE), polypropylene
Any one of nitrile resin (PAN) is made, so having durability and oil resistivity, is therefore preferred.
When molecular cut off is less than 1 × 104When Da (dalton), purge amount is few, and processing spends the time, generates in early stage stifled
Plug, therefore be not preferred.
On the other hand, when above-mentioned molecular cut off is greater than 5 × 105When Da (dalton), since oil is through film and not
It can be carried out sufficient filtering, therefore be not preferred.
In addition, it is a feature of the present invention that above-mentioned secondary treatment portion includes: peripheral wall portion；Shell, by closing above-mentioned peripheral wall portion
Upper and lower end face end face portion constitute；Single treatment water introducing port, is formed in above-mentioned end face portion；Single treatment water export mouth is used
In sending the single treatment water without above-mentioned reverse osmosis membrane filtration back to secondary treatment slot；Axle portion is incorporated in above-mentioned shell；Circle
Sheet reverse osmosis membrane, relative to above-mentioned axle portion, in the axial direction between be laminated across gasket；Channel-forming member is set
It sets between above-mentioned reverse osmosis membrane, and forms flow path in radial direction along the surface of above-mentioned reverse osmosis membrane；For secondary treatment
The flow path of water flowing, above-mentioned flow path are connected to the inside of above-mentioned disc-shaped reverse osmosis membrane, and be formed in above-mentioned gasket and axle portion it
Between；And export mouth, for exporting above-mentioned secondary treatment water.
Since above-mentioned aflter-fillter portion has above-mentioned composition, so as to which the operating pressure of film is for example increased to about
Therefore 3MPa-12MPa can remove the low molecular weight impurities such as surfactant and improve enrichment factor.
In addition, due to single treatment water along the surface of film with high flow rate (for example, with linear velocity of 1m/s-3m/s) stream
It is dynamic, therefore, inhibit low molecular weight impurities to be adhered on film surface, to inhibit the blocking of film.
In addition, the present invention provides a kind of oily wastewater treatment method, this method will using above-mentioned oil-containing waste water treating device
Oily waste water is separated into You Heshui characterized by comprising executes ultrafiltration containing oil emulsion to what is contained in above-mentioned oily waste water
The step of processing is to be oil and single treatment water by above-mentioned oil-containing emulsion separation；And divided with reverse osmosis membrane above-mentioned
From single treatment water execute filtration treatment to by single treatment water be separated into not a filter portion remove low molecule
The step of measuring impurity and secondary treatment water, in addition, by above-mentioned secondary treatment Water warfare to equal than or less than commons water area
Discharge standard value.
According to this method, oil can be removed by hyperfiltration treatment, and by using the filtering of reverse osmosis membrane structure at
Reason removes low molecular weight impurities.That is, can by oily waste water purify to equal than or less than commons water area discharge standard value.
Here, it is preferred that are as follows: after isolating solid and the step of containing oil emulsion by above-mentioned oily waste water, to being separated
Containing oil emulsion execute hyperfiltration treatment, by above-mentioned oil-containing emulsion separation be oil and single treatment water.
The separation of solid and liquid portion is, for example, centrifugal separator, can will be contained by what separation of solid and liquid portion (centrifugal separator) separated
Oil emulsion is supplied to single treatment slot.
Invention effect
According to the present invention, such a oil-containing waste water treating device and the oiliness sewage treatment side using the device are provided
Method, it may be assumed that it can successfully carry out wastewater treatment and reduce processing cost, it can be by purification of waste water to equal to or less than commons water
The discharge standard value in region, so as to realize the less wastewater treatment of effect on environment.
Detailed description of the invention
Fig. 1 is the integrally-built block diagram for schematically showing oil-containing waste water treating device of the invention.
Fig. 2 is the cross-sectional view for showing the outline structure in aflter-fillter portion shown in FIG. 1.
Fig. 3 is the flow chart for showing the operating process of oily wastewater treatment method of the invention.
Fig. 4 is the table for showing the result of experiment 1 of the invention.
Fig. 5 is the table for showing the result of experiment 2 of the invention.
Specific embodiment
Hereinafter, to oil-containing waste water treating device of the invention and using the oiliness sewage treatment side of the device with reference to the accompanying drawings
The specific embodiment of method is illustrated.In addition, oil-containing waste water treating device of the invention will use in intermetallic composite coating etc.
Oily waste water be separated into You Heshui (emulsion), and by separated processing Water warfare be equal to or less than commons such as rivers
The discharge standard value of water area.
Fig. 1 is the integrally-built block diagram for schematically showing oil-containing waste water treating device of the invention.Shown in Fig. 1
Oil-containing waste water treating device 1 has tank 2 made of such as steel, to recycle the oily waste water of used useless cutting oil etc..
The size and shape of the tank 2 are not particularly limited, but for ease of transport, general cylindrical shape can be used
20 liters of barrel cages etc..
In addition, oil-containing waste water treating device 1 includes: pump 3, for extracting the oily waste water in above-mentioned tank 2；Solid-liquid separating machine
4, the oily waste water extracted by pump 3 is separated by the solid refuses such as chip (metal fillings) and oil-containing emulsus by centrifuging treatment
Liquid.
In the case where in the oily waste water without containing solid refuses (metal fillings) such as chips, the processing of the oily waste water is not
It needs using solid-liquid separating machine (separation of solid and liquid portion) 4, therefore, not necessarily needs to be arranged solid-liquid separating machine (separation of solid and liquid portion) 4.
That is, individual device can also be set by solid-liquid separating machine (separation of solid and liquid portion) 4, and solid-liquid separating machine is used as needed.
Above-mentioned solid-liquid separating machine (separation of solid and liquid portion) 4 is only to extract oil-containing emulsus from the oil-containing treatment fluid by 3 supply of pump
The device of liquid.That is, removing by the oil slick on pumping the chip contained in the oil-containing treatment fluid that 3 supply and floating on the surface and only extracting and contain
The device of oil emulsion.As the solid-liquid separating machine (separation of solid and liquid portion) 4, it is, for example, possible to use centrifugal separators.It is solid by this
The chip and oil slick that liquid separator 4 removes are recovered in accumulator tank 5.
In addition, oil-containing waste water treating device 1 includes: single treatment slot 6, the single treatment slot 6 is for storing by above-mentioned
What solid-liquid separating machine (separation of solid and liquid portion) 4 obtained contains oil emulsion；Filter portion 7, a filter portion 7 is to being stored in
It is filtered processing containing oil emulsion in above-mentioned single treatment slot 6, to remove oil.
An above-mentioned filter portion 7 has ultrafiltration membrane (UF film) filtration device structure of tubulose membrane type or helical form membrane type.
As described above, be using the reasons why ultrafiltration membrane (UF film) filtration device structure of tubulose membrane type or helical form membrane type,
It can make to be flowed containing oil emulsion along the surface of ultrafiltration membrane with high flow rate (for example, with linear velocity of 3m/s-4m/s), from
And inhibit the oil for being attached to ultrafiltration film surface, and inhibit the blocking of film.
Additionally, it is preferred that being, the film for an above-mentioned filter portion is by polyvinylidene fluoride resin (PVDF), polytetrafluoroethyl-ne
Any one of olefine resin (PTFE), polyacrylonitrile resin (PAN) are made, moreover, molecular cut off is 1 × 104Da (dongle
) more than and 5 × 105Da (dalton) is below.
As noted previously, as film is by polyvinylidene fluoride resin (PVDF), polyflon (PTFE), polypropylene
Any one of nitrile resin (PAN) is made, so having durability and oil resistivity, is therefore preferred.
When above-mentioned molecular cut off is less than 1 × 104When Da (dalton), purge amount is few, and processing spends the time, produces in early stage
Raw blocking, therefore be not preferred.
On the other hand, when above-mentioned molecular cut off is greater than 5 × 105When Da (dalton), since oil cannot through film
It is adequately filtered, therefore is not preferred.
In addition, being set to single treatment slot 6 across valve V 1 between concentration sink 10, the concentration sink 10 is for recycling by one
The oil that secondary filter portion 7 removes.
In addition, being connected with the oil-containing cream that piping a, piping a will not pass through a filter portion 7 in a filter portion 7
Shape liquid sends single treatment slot back to, also, is also connected with piping b, piping b and will pass through the single treatment in a filter portion 7
Liquid exports to secondary treatment slot 8.In addition, above-mentioned pipeline a is provided with valve V2, above-mentioned pipeline b is provided with valve V 3.
Therefore, when closing above-mentioned valve V1 and open valve V2 and V3, being supplied to once in single treatment slot 6 containing oil emulsion
When filter portion 7, passes through (transmission) filter portion 7 and the single treatment water for having removed oil exports to secondary treatment slot 8.
On the other hand, single treatment slot 6 is not sent back to containing oil emulsion by (transmission) filter portion 7, stored
In single treatment slot 6, and it is supplied again to a filter portion 7.
As a result, being gradually concentrated containing oil emulsion in single treatment slot 6, finally, by closing valve V 2 and V 3 and beating
Valve opening V 1 is recycled in concentration sink 10 by the oil that a filter portion 7 is concentrated.
In addition, the secondary treatment slot 8 is for storing as described above, oil-containing waste water treating device 1 includes: secondary treatment slot 8
The single treatment water of oil has been removed in a filter portion 7；Aflter-fillter portion 9, the aflter-fillter portion 9 is to being stored in
Emulsion in above-mentioned secondary treatment slot 8 is filtered processing, to remove low molecular weight impurities.
Above-mentioned aflter-fillter portion 9 removes the low molecular weight impurities contained in surfactant, antirust agent etc., by secondary place
Manage Water warfare to equal than or less than commons water area discharge standard value.
Above-mentioned aflter-fillter portion 9 is made of reverse osmosis membrane (RO film).The aflter-fillter portion 9 is with more by being overlapped
The filter of filtration device structure made of layer disc-shaped reverse osmosis membrane.
The aflter-fillter portion 9 uses the mistake having through filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane
The operating pressure of film can be for example increased to about 3Mpa-12MPa, it is miscellaneous can to remove the low molecular weights such as surfactant by filter
Matter simultaneously improves enrichment factor.
In addition, in the same manner as a filter portion, due to single treatment water along the surface of film with high flow rate (for example, with
3m/s-4m/s linear velocity) it flows, therefore, it is able to suppress low molecular weight impurities and is attached to the blocking for inhibiting film on film surface.
Furthermore it is preferred that being, reverse osmosis membrane (RO film) used herein is using the sodium molecule that can remove 99% or more
The reverse osmosis membrane (RO film) of amount.
It is illustrated according to fig. 2 with the aflter-fillter portion by structure made of overlying multiple layers disc-shaped reverse osmosis membrane
9。
As shown in Fig. 2, aflter-fillter portion 9 includes peripheral wall portion 20 and the upper and lower end face for closing above-mentioned peripheral wall portion 20
End face portion 21,22.Shell is formed by the end face portion 21,22 of above-mentioned peripheral wall portion 20 and the upper and lower end face for closing above-mentioned peripheral wall portion 20.
Single treatment water introducing port 23 and single treatment water export mouth 24 are provided in above-mentioned end face portion 22, it is above-mentioned primary
Processing water introducing port 23 is used to for single treatment water importeding into inside, and above-mentioned single treatment water export mouth 24 will not be for that will pass through
The single treatment water of (transmission) disc-shaped reverse osmosis membrane (RO film) 26 sends single treatment slot 8 back to.
Above-mentioned disc-shaped reverse osmosis membrane (RO film) 26 relative to axis 27 in the axial direction between be laminated across gasket 28.
Above-mentioned disc-shaped reverse osmosis membrane (RO film) 26 is constituted are as follows: has film a pair of up and down, also, its outer peripheral edge is closing
, 26b between the film of upper and lower a pair is flowed through through the processing water after (passing through) the up and down film of a pair.
In addition, the central part in disc-shaped reverse osmosis membrane (RO film) 26 is formed with the hole 26a for the insert of above-mentioned axis 27,
Be formed as so-called donut shape (annular) in plan view.
In addition, being accommodated with channel-forming member 29 in the inside of peripheral wall portion 20, the channel-forming member 29 is in above-mentioned disk
Flow path is formed between shape reverse osmosis membrane (RO film) 26.
First flow path L1 is formed between the outer peripheral surface of the channel-forming member 29 and the inner peripheral surface of peripheral wall portion 20, in flow path
Second flow path L2 is formed between the upper surface of the lower end surface of forming member 29 and end face portion 21.In addition, in channel-forming member 29
Third flow path L3 is formed between layer frame portion 29a, below the upper surface of channel-forming member 29 and end face portion 22 between form the
Four flow path L4.
In addition, being formed between above-mentioned gasket 28 and axis 27 (upper next with the inside of disc-shaped reverse osmosis membrane (RO film) 26
Between film 26b) connection the 5th flow path L5.The secondary treatment water export mouth 25 of 5th flow path L5 and export secondary treatment water
Connection.
Since aflter-fillter portion 9 has construction as described above, the single treatment water flow imported from introducing port 23
Through flow path L1, L2, L3.
In addition, single treatment water is along disc-shaped reverse osmosis membrane (RO film) 26 when single treatment water flows through flow path L3
Surface is with high flow rate (for example, 1m/s~3m/s) flowing.
In addition, the above and below of the layer frame portion 29a of channel-forming member 29 is formed with multiple protrusions, use although not shown
It states protrusion and keeps disc-shaped reverse osmosis membrane (RO film) 26.
Therefore, when processing water is flowed from the outer peripheral edge of disc-shaped reverse osmosis membrane (RO film) 26 towards central part or from central part
When flowing towards outer peripheral edge, processing water and above-mentioned protrusion are collided, and flowing becomes irregular.
As noted previously, as the flow velocity (linear velocity) of the processing water on the surface of reverse osmosis membrane (RO film) 26 is greatly, and flow
Become irregular, therefore, the low molecular weight impurities for being attached to film surface are suppressed, to inhibit the blocking of film.
In addition, when single treatment water flows through third flow path L3, after (passing through) disc-shaped reverse osmosis membrane (RO film) 26
Processing water pass through from 26b between the film of reverse osmosis membrane (RO film) 26 and flow to the 5th flow path L5, then from for export it is secondary from
The secondary treatment water export mouth 25 for managing water exports.
The behaviour of film can be increased above by filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane (RO film) 26
Make pressure, therefore, the low molecular weight impurities of surfactant etc. can be removed to improve enrichment factor.
That is, since the reverse osmosis membrane (RO film) 26 is filtered (infiltration press filtration) using operating pressure, work as concentration
When getting higher, it can not be filtered without improving operating pressure.The operating pressure of general reverse osmosis membrane is low, is up to 2MPa and (uses
It is 7MPa when sea water desalination), therefore, there are limitations for concentration.For example, handling 70% in 100% waste water, about
30% concentration is the limit, the rate of recovery 70%.
In contrast, there is the reverse osmosis membrane of structure made of passing through overlying multiple layers disc-shaped reverse osmosis membrane (RO film) 26
Operating pressure is high, is up to 12MPa (usually using 3MPa-7MPa), and be wafer architecture, and therefore, soil resistance is strong, also,
90% in 100% waste water is handled, highly concentrated to 10%, the rate of recovery 90% is even more ideal.
Fig. 1 is again returned to, oil-containing waste water treating device 1 is illustrated.
It is set to above-mentioned secondary treatment slot 8 across valve V4 between concentration sink 11, the concentration sink 11 is for recycling by secondary
The low molecular weight impurities of the surfactant that filter portion 9 removes etc..
Piping c, piping c are connected in above-mentioned aflter-fillter portion 9 for will not penetrate and (pass through) aflter-fillter portion 9
Single treatment water send secondary treatment slot 8 back to, also, be connected with piping d, piping d will transmit through and (pass through) aflter-fillter portion 9
Single treatment water afterwards exports to processing water pot.
In addition, be connected on piping c with the finally concentration piping e that is connected of sink 12, this be finally concentrated sink 12 recycle to
Carry out the final condensed water of trade waste processing.
In addition, being provided with valve V5 in above-mentioned piping c, piping d is provided with valve V6.
Therefore, when close above-mentioned valve V4 and open valve V5 and V6, the single treatment water in secondary treatment slot 8 be supplied to it is secondary
It when filter portion 9, is filtered in aflter-fillter portion 9, through (passing through) aflter-fillter portion 9 and has removed surface-active
The secondary treatment water of the low molecular weight impurities such as agent exports to processing water pot.
On the other hand, it is not sent back to secondary treatment slot 8 through the single treatment water in (passing through) aflter-fillter portion 9, stored
In secondary treatment slot 8, and it is supplied again to aflter-fillter portion 9.
As a result, the single treatment water in secondary treatment slot 8 is concentrated, finally, by closing valve V 5 and V 6 and opening valve V
4, the condensed water containing high concentration low molecular weight impurities remained in aflter-fillter portion 9 is recovered to final concentration sink
11.Moreover, by trade waste processing is carried out containing the condensed water of high concentration low molecular weight impurities.
The final condensed water for carrying out above-mentioned waste treatment can be significantly reduced compared with single treatment water, be located
Energy needed for reason is reduced, to be expected to reduce cost.
Then, the operating process in oil-containing waste water treating device 1 is illustrated according to Fig. 1 and Fig. 3.Fig. 3 is to show oily waste water
The flow chart of the operating process (operating process of oily wastewater treatment method of the invention) of processing unit 1.
Firstly, the used useless cutting oily (oily waste water) for example generated in intermetallic composite coating is stored in (Fig. 2 in tank 2
In step S1).
When gathering the oily waste water of predetermined amount in tank 2, the oily waste water in tank 2 is extracted simultaneously by the driving of pump 3
It is supplied to solid-liquid separating machine 4.Oily waste water in tank 2 contains the chip (metal fillings) etc. generated when intermetallic composite coating.In solid-liquid point
Disembark in 4, heavy chip and swim in emulsifying emulsion surface on oil slick and mutually divided containing oil emulsion
From (the step S2 in Fig. 2).
Accumulator tank 5, and quilt containing oil emulsion are recycled to by the separated above-mentioned chip of solid-liquid separating machine 4 and oil slick
It is supplied to single treatment slot 6 and is stored therein in (the step S3 in Fig. 2).
Then, in Fig. 1, in the state of closing valve V 1 and opening valve V 2 and V 3, by 7 pairs of a filter portion storage
There are carry out hyperfiltration treatment containing oil emulsion in single treatment slot 6.
Then, secondary treatment slot 8 is fed into through the single treatment water behind a filter portion 7 and be stored (in Fig. 2
Step S6).
On the other hand, single treatment slot 6 is not sent back to by the single treatment water in a filter portion 7 again.
In addition, though the oil for being supplied to the single treatment water of secondary treatment slot 8 is removed, but due to containing surface-active
Therefore the low molecular weight impurities such as agent are unsatisfactory for the discharge standard of commons water area.
Above-mentioned processing (the step S4 of Fig. 2) is continuously repeated.In addition, by being carried out continuously the hyperfiltration treatment, it is primary to locate
It is expected realization enrichment containing oil emulsion in reason slot 6.
Then, valve V 1 is opened, the condensed water generated in a filter portion 7 is recycled to concentration sink 10 (in Fig. 2
Step S6).In addition, the condensed water of the concentration sink 10 recycling is sent back to oily waste water water pot 2.
Then, in the state for opening valve V 4 (closing when single treatment water is imported into secondary treatment slot 8), valve V5, valve V6
Under, processing is filtered to the single treatment water being stored in secondary treatment slot 8 by the reverse osmosis membrane in aflter-fillter portion 9.
Then, the secondary treatment water permeated from the reverse osmosis membrane in aflter-fillter portion 9 is supplied to (discharge) to processing water
Tank (the step S8 in Fig. 2).
Above-mentioned secondary treatment water meets above-mentioned discharge standard.That is, the secondary treatment water energy for being supplied to processing water pot is enough discharged
To commons water area, or industrial water can be again acted as etc..
Here, when discharging to commons water area, needing to meet water pollution prevents the standard of method defined.Japan
Discharge standard includes " living environment project standard ", the two shown in " discharge of poisonous waste standard " and table 2 shown in table 1
All it must satisfy.
[table 1]
[table 2]
On the other hand, the single treatment water for the reverse osmosis membrane for not permeating aflter-fillter portion 9 is sent back to secondary treatment again
Slot 8.Continuous repeatedly above-mentioned processing (the step S7 in Fig. 2).
By the filtration treatment of above-mentioned reverse osmosis membrane, the single treatment water in secondary treatment slot 8, which becomes, contains surface-active
The condensed water of the low molecular weight impurities such as agent.Then, by closing valve V5 and V6 and opening valve V4, remain in aflter-fillter portion 9
In the condensed water that is concentrated of low molecular weight impurities be recycled in concentration sink 11 as final condensed water, as industrial waste
Object is handled (the step S9 in Fig. 2).
Above-mentioned final process water is about therefore the 10% of single treatment water to be processed can drop compared with prior art
Reduction process cost.
As described above, embodiment according to the present invention passes through after removing metal fillings and oil slick in oily waste water
Ultrafiltration structure carry out a filtration treatment and remove oil, and by reverse osmosis membrane structure carry out secondary filter processing remove it is low
Molecular weight impurity.I.e., it is possible to purify oily waste water to the discharge standard level of commons water area.
Particularly, the reverse osmosis membrane structure in secondary filter processing, which uses, passes through overlying multiple layers disc-shaped reverse osmosis membrane (RO
Film) made of structure, the discharge rate of the condensed water of highly enriched pending offal treatment can be reduced as far as possible, so as to
Reduce processing cost.
In addition, in the above-described embodiment, illustrate the case where being provided with separation of solid and liquid portion (centrifugal separator), still,
In the case where in above-mentioned oily waste water not containing solid refuses (metal fillings) such as chips, due to not needing using solid-liquid separating machine
Therefore solid-liquid separating machine (separation of solid and liquid portion) 4 will be not necessarily arranged in (separation of solid and liquid portion) 4.That is, can also will be separated by solid-liquid separation
Machine (separation of solid and liquid portion) 4 is set as individual device, and uses solid-liquid separating machine as needed.
Furthermore it is preferred that being to execute filtering after being filtered processing in a filter portion 7 and aflter-fillter portion 9
Device cleaning step.In the present invention, its not restricted method can be restored to filter function by the washing process of handwork
Can, or can be by setting cleaning device come automated cleaning filter.
Embodiment
Hereinafter, further illustrating oil-containing waste water treating device of the invention based on embodiment.
(experiment 1)
In experiment 1, purified treatment is carried out to waste liquid using oil-containing waste water treating device of the invention, and measure everywhere
The CODmn (mg/L) and N-Hex (mg/L) in reason stage.
Centrifugal separator has been used as solid-liquid separating machine, centrifuge separation in 30 minutes has been carried out with 7000rpm, has been separated
Containing oil emulsion (raw water).
In addition, having used MEMOS Membranes Modules Systems company to manufacture as a filter portion
Tubular film.The internal diameter of the tubular film is 8mm, and has the separating property of molecular cut off 100,000.In addition, material (the film of pipe
Material) be PVDF (Kynoar), used the material being contained in 2 inches of rustless steel container.
In addition, the operating pressure in a filter portion is 0.4MPa, out at inlet (introducing port containing oil emulsion)
(export mouth of single treatment water) is 0.3MPa at mouthful, also, film surface linear velocity is 3-4m/s, with this condition, to primary mistake
The supply of filter portion contains oil emulsion.
As aflter-fillter portion, the PF membrane module (type for having used Rochem Technical Services company to manufacture
Number 30169).The PF membrane module (model 30169) has the performance of desalination rate 99%.
In addition, under conditions of the operating pressure in aflter-fillter portion is 3Mpa-7Mpa, film surface linear velocity is 1-3m/s,
Single treatment water is supplied to aflter-fillter portion.
Each stage of measurement is waste liquid (raw water), single treatment water (tubulose film process water), final process water (secondary treatment
Water: RO film process water), the waste liquid type of measurement is two kinds of different useless cutting oil of use state.
The experimental result is shown in the table of Fig. 4.
As shown in the experimental result of Fig. 4, in embodiment 1-4, it is all lower CODmn value and N-Hex value, is equal to
Or the discharge standard value less than Japanese commons water area.
In particular, not being purified to emission level, but logical it has been verified that the CODmn value of single treatment water, N-Hex value are higher
It crosses final process and significantly improves detergent power.
(experiment 2)
In experiment 2, purified treatment is carried out to waste water using oil-containing waste water treating device of the invention, and carry out reality
It tests to observe " the living environment project standard " whether secondary treatment water meets Japan.
As raw water, the cutting oil for having used Francool company to manufacture, in use, to the still not used cutting oil into
8 times of dilutions are gone.
Then, raw water is supplied to a filter portion shown in embodiment 1, and by institute's mistake in a filter portion
The processing water of filter is supplied to aflter-fillter portion, obtains secondary treatment water.
In addition, the specification and experiment condition in a filter portion and aflter-fillter portion are identical as experiment 1.
Also, living environment project survey has been carried out for above-mentioned raw water and secondary treatment water.
In addition, confirmed the content of surfactant by n-hexane value and conductivity.Here, in addition to dormant oil class, dynamic plant
Except the oils such as object grease type, n-hexane value, which also serves as, indicates surfactant, soap, alcohol, amine, pesticide, dyestuff, phenols
Deng index, and the total amount of the nonvolatile matter in the hexane extracted is analyzed as n-hexane extract.
It is as the result is shown in Fig. 5.As shown in the experimental results in Figure 5, have confirmed that secondary treatment water meets the " life of Japan
Environmental Projects standard ".In addition, by the measured value of above-mentioned raw water and secondary treatment water it has been confirmed that secondary treatment slot (single treatment
Slot is also the same) in treatment fluid realize highly enrichedization.
Label declaration
1 oil-containing waste water treating device
2 tanks
3 pumps
4 solid-liquid separating machines (separation of solid and liquid portion)
5 accumulator tanks
6 single treatment slots
A No. 7 filter portions
8 secondary treatment slots
9 aflter-fillter portions
10 concentration sinks
11 concentration sinks
20 peripheral wall portions
21,22 end face portion
23 single treatment water introducing ports
24 single treatment water export mouths
25 secondary treatment water export mouths
26 reverse osmosis membranes (RO film)
27 axis
28 gaskets
29 channel-forming members
29a layer frame portion
L1 first flow path
L2 second flow path
L3 third flow path
The 4th flow path of L4
The 5th flow path of L5
Claims (according to the 19th article of modification of treaty)
1. a kind of (after modification) oil-containing waste water treating device would be used for the oily waste water containing surfactant of intermetallic composite coating
Water is separated into You Heshui characterized by comprising
Filter portion executes hyperfiltration treatment containing oil emulsion to what is contained in the oily waste water, will contain oil emulsion point
From for oil and single treatment water；
Single treatment slot, storage is described to contain oil emulsion, contains oil emulsion to a filter portion supply, and store from primary mistake
What filter portion returned contains oil emulsion；
Aflter-fillter portion, to by a filter-portion from single treatment water execute use reverse osmosis membrane filtering
Single treatment water, is separated into the surfactant and secondary treatment water not removed in a filter portion by reason；
Secondary treatment slot stores the single treatment water handled by a filter portion, primary to the supply of aflter-fillter portion
Water is handled, and stores the single treatment water returned from aflter-fillter portion,
Wherein, a filter portion is the filtering with the ultrafiltration membrane filter structure of tubulose membrane type or helical form membrane type
Device is flowed containing oil emulsion along the surface of the hyperfiltration treatment film in a filter portion with the linear velocity of 3m/s-4m/s,
The aflter-fillter portion has the filter by filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane, institute
State the film in aflter-fillter portion operating pressure be 3MPa-12MPa, and single treatment water along the surface of reverse osmosis membrane with
The linear velocity of 3m/s-4m/ flows.
(2. deletion)
(3. after modification) oil-containing waste water treating device according to claim 1, which is characterized in that have separation of solid and liquid portion,
The separation of solid and liquid portion isolates solid by the oily waste water and contains oil emulsion,
Contain oil emulsion to single treatment slot supply.
4. oil-containing waste water treating device according to claim 1, which is characterized in that by the aflter-fillter part from
Secondary treatment water meets the discharge standard of commons water area.
5. oil-containing waste water treating device according to claim 1, which is characterized in that the film for a filter portion
It is made by any one of polyvinylidene fluoride resin (PVDF), polyflon (PTFE), polyacrylonitrile resin (PAN)
At molecular cut off is 1 × 104Da or more 5 × 105Da or less.
6. oil-containing waste water treating device according to claim 1, which is characterized in that the secondary treatment portion includes:
Peripheral wall portion；
Shell is constituted by closing the end face portion of upper and lower end face of the peripheral wall portion；
Single treatment water introducing port, is formed in the end face portion；
Single treatment water export mouth, for sending the single treatment water without the reverse osmosis membrane filtration back to secondary treatment slot；
Axle portion is incorporated in the shell；
Disc-shaped reverse osmosis membrane, relative to the axle portion, in the axial direction between be laminated across gasket；
Channel-forming member is arranged between the reverse osmosis membrane, and along the surface of the reverse osmosis membrane in radial direction
Form flow path；
For the flow path of secondary treatment water flowing, the flow path is connected to the inside of the disc-shaped reverse osmosis membrane, and is formed in
Between the gasket and axle portion；And
Export mouth, for exporting the secondary treatment water.
A kind of (7. after modification) oily wastewater treatment method, which is characterized in that using described in any one of any one of claims 1 to 55
Oily waste water is separated into You Heshui by oil-containing waste water treating device, and the oily wastewater treatment method includes:
Hyperfiltration treatment is executed to be oil by the oil-containing emulsion separation containing oil emulsion to what is contained in the oily waste water
The step of dividing with single treatment water；And
Filtration treatment is executed to which single treatment water to be separated into not by isolated single treatment water to described using reverse osmosis membrane
In a filter portion the step of surfactant and secondary treatment water of removing,
Wherein, by the secondary treatment Water warfare to equal than or less than commons water area discharge standard value.
8. oily wastewater treatment method according to claim 6, which is characterized in that solid being isolated by the oily waste water
It after body and the step of containing oil emulsion, follows the steps below: executing hyperfiltration treatment containing oil emulsion to what is separated, contain by described in
Oil emulsion is separated into oil and single treatment water.
Claims (8)
1. oily waste water is separated into You Heshui by a kind of oil-containing waste water treating device characterized by comprising
Filter portion executes hyperfiltration treatment containing oil emulsion to what is contained in the oily waste water, will contain oil emulsion point
From for oil and single treatment water；And
Aflter-fillter portion, to by a filter-portion from single treatment water execute use reverse osmosis membrane filtering
Reason, is separated into the low molecular weight impurities not removed in a filter portion and secondary treatment water for single treatment water,
Wherein, a filter portion is the filtering with the ultrafiltration membrane filter structure of tubulose membrane type or helical form membrane type
Device, also, the aflter-fillter portion has the filtering by filtration device structure made of overlying multiple layers disc-shaped reverse osmosis membrane
Device.
2. oil-containing waste water treating device according to claim 1 characterized by comprising
Single treatment slot, storage is described to contain oil emulsion, contains oil emulsion to a filter portion supply, and store from primary mistake
What filter portion returned contains oil emulsion；And
Secondary treatment slot stores the single treatment water handled by a filter portion, primary to the supply of aflter-fillter portion
Water is handled, and stores the single treatment water returned from aflter-fillter portion.
3. oil-containing waste water treating device according to claim 2, which is characterized in that have separation of solid and liquid portion, the solid-liquid
Separation unit isolates solid by the oily waste water and contains oil emulsion,
Contain oil emulsion to single treatment slot supply.
4. oil-containing waste water treating device according to claim 1, which is characterized in that by the aflter-fillter part from
Secondary treatment water meets the discharge standard of commons water area.
5. oil-containing waste water treating device according to claim 1, which is characterized in that the film for a filter portion
It is made by any one of polyvinylidene fluoride resin (PVDF), polyflon (PTFE), polyacrylonitrile resin (PAN)
At molecular cut off is 1 × 104Da or more 5 × 105Da or less.
6. oil-containing waste water treating device according to claim 1, which is characterized in that the secondary treatment portion includes:
Peripheral wall portion；
Shell is constituted by closing the end face portion of upper and lower end face of the peripheral wall portion；
Single treatment water introducing port, is formed in the end face portion；
Single treatment water export mouth, for sending the single treatment water without the reverse osmosis membrane filtration back to secondary treatment slot；
Axle portion is incorporated in the shell；
Disc-shaped reverse osmosis membrane, relative to the axle portion, in the axial direction between be laminated across gasket；
Channel-forming member is arranged between the reverse osmosis membrane, and along the surface of the reverse osmosis membrane in radial direction
Form flow path；
For the flow path of secondary treatment water flowing, the flow path is connected to the inside of the disc-shaped reverse osmosis membrane, and is formed in
Between the gasket and axle portion；And
Export mouth, for exporting the secondary treatment water.
7. a kind of oily wastewater treatment method, which is characterized in that use oily waste water described in any one of any one of claims 1 to 66
Oily waste water is separated into You Heshui by processing unit, and the oily wastewater treatment method includes:
Hyperfiltration treatment is executed to be oil by the oil-containing emulsion separation containing oil emulsion to what is contained in the oily waste water
The step of dividing with single treatment water；And
Filtration treatment is executed to which single treatment water to be separated into not by isolated single treatment water to described using reverse osmosis membrane
The step of low molecular weight impurities and secondary treatment water for removing in filter portion,
Wherein, by the secondary treatment Water warfare to equal than or less than commons water area discharge standard value.
8. oily wastewater treatment method according to claim 7, which is characterized in that solid being isolated by the oily waste water
It after body and the step of containing oil emulsion, follows the steps below: executing hyperfiltration treatment containing oil emulsion to what is separated, contain by described in
Oil emulsion is separated into oil and single treatment water.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017064683 | 2017-03-29 | ||
| JP2017-064683 | 2017-03-29 | ||
| PCT/JP2018/012325 WO2018181262A1 (en) | 2017-03-29 | 2018-03-27 | Oily wastewater treatment device and oily wastewater treatment method using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109311705A true CN109311705A (en) | 2019-02-05 |
Family
ID=63675866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880002262.8A Pending CN109311705A (en) | 2017-03-29 | 2018-03-27 | Oil-containing waste water treating device and the oily wastewater treatment method for using the device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7104423B2 (en) |
| CN (1) | CN109311705A (en) |
| WO (1) | WO2018181262A1 (en) |
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| CN111410327A (en) * | 2020-03-29 | 2020-07-14 | 南京霄祥工程技术有限公司 | Restaurant wastewater treatment process and system |
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| CN111995087A (en) * | 2019-05-27 | 2020-11-27 | 宝山钢铁股份有限公司 | Cold rolling leveling waste liquid treatment method based on forward osmosis theory |
| JP6999255B1 (en) | 2021-03-11 | 2022-01-18 | ダイセン・メンブレン・システムズ株式会社 | Wastewater treatment system and its operation method |
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| JP2014057931A (en) | 2012-09-19 | 2014-04-03 | Toray Ind Inc | Water production method |
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- 2018-03-27 WO PCT/JP2018/012325 patent/WO2018181262A1/en active Application Filing
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| JPS6186986A (en) * | 1984-10-05 | 1986-05-02 | Sumitomo Jukikai Envirotec Kk | Treatment of waste water |
| JP2004058052A (en) * | 2002-06-07 | 2004-02-26 | Kobelco Eco-Solutions Co Ltd | Method of purifying contaminated sludge contaminated by organic halogen compound and heavy metals and equipment for the same |
| CN101219836A (en) * | 2007-01-12 | 2008-07-16 | 北京世博恒业科技有限公司 | System and technique for processing oily wastewater with high saline salinity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111410327A (en) * | 2020-03-29 | 2020-07-14 | 南京霄祥工程技术有限公司 | Restaurant wastewater treatment process and system |
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| Publication number | Publication date |
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| JPWO2018181262A1 (en) | 2020-02-20 |
| WO2018181262A1 (en) | 2018-10-04 |
| JP7104423B2 (en) | 2022-07-21 |
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