CN106310719A - High efficiency and continuous oil-water separation device - Google Patents
High efficiency and continuous oil-water separation device Download PDFInfo
- Publication number
- CN106310719A CN106310719A CN201610739304.9A CN201610739304A CN106310719A CN 106310719 A CN106310719 A CN 106310719A CN 201610739304 A CN201610739304 A CN 201610739304A CN 106310719 A CN106310719 A CN 106310719A
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- Prior art keywords
- oil
- continuous
- oily
- sump tank
- water
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Classifications
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- 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
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/085—Thickening liquid suspensions by filtration with membranes
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
Abstract
The invention discloses a high efficiency and continuous oil-water separation device, and belongs to the technical field of functional material application. The device comprises an oil collecting tank, a mechanical pump and an oil collecting device. The collecting tank is of a cube frame structure, metal substrate loaded with hydrophobic film is fixed on five surfaces of the cube frame, the five surfaces of the cube frame are in full contact with the oil and water mixture, and the sixth surface is an opening. The oil inlet of the mechanical pump is connected with the oil collecting tank through a pipeline, the oil outlet of the mechanical pump is connected with the oil collecting device through a pipeline. The high efficiency and continuous oil-water separation device overcomes such defects of polymer membrane that the processing amount is small, the separation speed is slow, and the wastewater can only be processed in batches. The continuous separation of oily wastewater can be conducted, and the high efficiency and continuous oil-water separation device provides a possibility of the application of membrane separation technology in oily wastewater treatment in actual life.
Description
Technical field
The invention belongs to functional material applied technical field, relate to one and there is special infiltrating profit efficient, continuous
Segregation apparatus.
Background technology
Along with in productive life, a large amount of discharges and the frequent of Crude Oil at Sea leakage accident of oil-polluted water occur, to high-performance
The exploration of oil-water separation material and technology have become as with development influence the living of the people, economic development and Environmental security important
Problem.
Under the inspiration of lotus leaf surface structure, Feng et al. (list of references 1:Feng L, Zhang Z Y, Mai Z H, et
al.A super-hydrophobic and super-oleophilic coating mesh film for the
Separation of oil and water.Angew.Chem.Int.Ed., 2004,43 (15), 2012-2014.) with stainless
Steel wire is substrate, utilizes spraying-drying technology, modifies low-surface energy substance politef, is prepared for having super-hydrophobic surpassing
Oil loving spraying nethike embrane.This separate mesh membrane separating effect is good, and intensity is high, has started special wellability material for profit from this
The new method separated.
2011, (list of references 2:Cheng M J, Gao Y F, Shi F, the et al.A functionally such as Shi
integrated device for effective and facile oil spill cleanup.Langmuir,2011,
27,7371-7375.) it is prepared for functional processing waste plant.Prepare super-hydrophobic by Ag particle is deposited on SAMs surface
Surface.Can efficiently, the circulation multiple oil of separation repeatedly, but relatively costly, unsuitable expanding production.
Nowadays, the research utilizing the special wellability of membrane technology and material surface to carry out oil-water separation gets more and more, these
New method has been increasingly becoming cleaning oil slick, has realized the important method of oil-water separation.It has runs, at normal temperatures without phase
Become, device is little, energy consumption is relatively low, separation process can the advantages such as oil recovery is relatively easy after increasingly automated, oil-water separation.But mesh
Before can be used for the membrane material of oil-water separation have that flux is too low, processing speed is slow, contamination resistance is poor, can only batch processing waste water
Etc. shortcoming, it is only used for small-scale oil-water separation, significantly limit membrane technology and process and crude oil leakage thing in actual waste water
Application in therefore.Therefore, how polymeric film is applied to oily-water seperating equipment, it is achieved membrane separation technique is continuously separated profit and mixes
Compound, is the problem of people's growing interest.
Summary of the invention
It is an object of the invention to solve with simple, economic method that membrane separation technique treating capacity is little, separating rate slow, only
A difficult problem for energy batch processing waste water, it is achieved membrane separation technique application in real life.
The present invention provides a kind of oily-water seperating equipment efficient, continuous, and described device includes that oil sump tank, mechanical pump and oil are collected
Device.Described oil sump tank is cube frame structure, and five faces of described cube frame are fixed with appendix hydrophobic film
Metallic substrates, and be fully contacted with oil water mixture, the 6th face is opening.The oiler of described mechanical pump is by pipeline even
Connect described oil sump tank, the oil-out of mechanical pump by pipeline connect described in oily collection device.Under the effect of mechanical pump, oil-collecting
The oil obtained through oil-water separation in case can be collected in described oily collection device further, it is achieved that to oil water mixture
Separate and collect and carry out simultaneously, substantially reduce the time reclaiming waste oil, it is achieved thereby that being continuously separated of oil water mixture, divide
More than 97% is reached from efficiency.
Described hydrophobic film is prepared in described metallic substrates by method of electrostatic spinning.
Described hydrophobic film is the fibrous membrane of hydrophobic oleophilic oil, and metallic substrates is wire netting, on therefore described oil sump tank,
Hydrophobic film is positioned at the outside of oil sump tank, and metallic substrates is positioned at the inner side of oil sump tank, it is achieved the oil contained in oil water mixture to
Being directed through within header tank, and water can not pass through.
Described cube frame is light, the material of organic solvent-resistant, can include that light plastics are (as poly-with chosen material
Tetrafluoroethene, polystyrene, polypropylene), any one in EPE pearl wool or lightweight wooden stick (such as three-ply board).
Described wire netting is mechanical performance height, the materials of good toughness such as stainless (steel) wire or the phosphor-copper net of 50～300 mesh.
Described hydrophobic film thickness is 30～50 μm；Fiber diameter is 100nm～3.0 μm.
Oily-water seperating equipment simple in construction provided by the present invention, with low cost, be easily enlarged metaplasia produce, can follow for a long time
Ring uses.The process of industrial oily waste water (oil water mixture) is with a wide range of applications.
The oily-water seperating equipment that the present invention provides has the features such as separation efficiency is high, treating capacity is big, separating rate is fast, is suitable for
In the quick process containing oily waste waters such as diesel oil, gasoline, machine oil.
The present invention uses the method for electrostatic spinning, on the metallic substrate one layer of hydrophobic film of electrospinning, overcomes monolayer polymerization
The shortcoming of thing film bad mechanical property.Meanwhile, hydrophobic film prepared by the present invention has hydrophobic/oleophylic performance, and the contact angle of water is big
In 106 °, the contact angle of oil is close to 0 °.Because it has special wellability, oil can be made to pass through hydrophobic film and water the most not
Pass through, thus realize efficient, continuous print oil-water separation.
Accompanying drawing explanation
Fig. 1 is the metallic base structure schematic diagram of appendix hydrophobic film in the present invention.
Fig. 2 is that 10000 times of topography scan electricity are amplified on hydrophobic film (PVDF-HFP, the 16wt%) surface described in embodiment 1
Mirror picture.
Fig. 3 is the contact angle photo at PVDF-HFP hydrophobic film (16wt%) of the water droplet (2 μ L) described in embodiment 1, water
Contact angle be 132 °.
Fig. 4 is the cube frame schematic diagram of oil sump tank in the present invention.
Fig. 5 be the present invention oily-water seperating equipment in the structural representation of oil sump tank.
Fig. 6 is the connection diagram of the oily-water seperating equipment of the present invention.
In figure:
1. hydrophobic film；2. metallic substrates；3. cube frame；
4. oil sump tank；5. mechanical pump；6. oil collection device.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme is clearly and completely described, it is clear that institute
The embodiment described is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly falls into this
The scope of bright protection.
The present invention provides a kind of oily-water seperating equipment efficient, continuous, and described device includes that oil sump tank 4, mechanical pump 5 and oil are received
Acquisition means 6.As shown in Figure 4, described oil sump tank 4 is in cube frame structure, such as Fig. 5, on five faces of described cube frame 3
It is fixed with the metallic substrates of appendix hydrophobic film, end face opening.The oiler of described mechanical pump 5 connects described oil-collecting by pipeline
Case 4, the oil-out of mechanical pump 5 by pipeline connect described in oily collection device 6.Five of described oil sump tank 4 have hydrophobic thin
The surface of film 1 is placed in pending oil water mixture, opening upwards, and the oil in oil water mixture is unidirectional by hydrophobic film 1
Entering oil sump tank 4 internal, under the effect of mechanical pump 5, the oil obtained through oil-water separation in oil sump tank 4 can be collected further
In described oily collection device 6, it is achieved that separation and collection to oil water mixture are carried out simultaneously, substantially reduce recovery waste oil
Time, it is achieved thereby that being continuously separated of oil water mixture, separation efficiency reaches more than 97%.
Described hydrophobic film 1 is prepared in described metallic substrates 2 by method of electrostatic spinning.
The metallic substrates of described appendix hydrophobic film, hydrophobic film 1 is the fibrous membrane of hydrophobic oleophilic oil, and metallic substrates 2 is
Wire netting, on therefore described oil sump tank 4, as it is shown in figure 5, hydrophobic film 1 is positioned at the outside of oil sump tank 4, metallic substrates 2 is positioned at
The inner side of oil sump tank 4.
Described cube frame 3 is light, the material of organic solvent-resistant, can with chosen material include light plastics (as
Politef, polystyrene, polypropylene), one in EPE pearl wool or lightweight wooden stick (such as three-ply board).
The machineries such as the stainless (steel) wire that wire netting is mesh size 50～300 mesh of described metallic substrates 2 employing or phosphor-copper net
Performance is high, the material of good toughness.
Described hydrophobic film 1 thickness is 30～50 μm；Fiber diameter is 100nm～3.0 μm, passes through following steps
Method obtains:
Under room temperature, polymer A being dissolved in solvent B and continuous stirring 3～12h is completely dissolved to polymer A, obtain is poly-
Polymer solution loads in syringe as spinning solution.Syringe needle is connected with the positive pole of high-voltage DC power supply；With wire netting
For receiving substrate, it is connected with the negative pole of high-voltage DC power supply, carries out electrostatic spinning, obtain hydrophobic film the most on the metallic substrate.
Described polymer A is hydrophobic polymer, be selected specifically to Kynoar-hexafluoropropene (PVDF-HFP),
Kynoar (PVDF), polystyrene (PS), polyurethane (PU), nylon 6 (PA6), polymethyl methacrylate (PMMA), poly-
One in caprolactone (PCL) or Poly(D,L-lactide-co-glycolide (PLGA).
Described solvent B is DMAC N,N' dimethyl acetamide (DMAc), N,N-dimethylformamide (DMF), 1,4-dioxy six
In ring, oxolane (THF), chloroform, toluene, trichloro ethylene, Ketohexamethylene, acetone (acetone), one or both mixing is molten
Liquid.
The mass percent concentration of described polymer solution is 7%～30%.
During described electrostatic spinning, syringe fltting speed is 0.4～6ml/h；Electrostatic spinning voltage is 8～30kV；
Receiving range is 6～35cm.
Embodiment 1
50 mesh stainless (steel) wires are sequentially placed in acetone, ethanol solution, ultrasonic 10min；It is placed on afterwards in water, continues
Ultrasonic 10min, removes the oil stain on stainless (steel) wire surface.Stainless (steel) wire after washing is placed in baking oven, under the conditions of 120 DEG C, dries
Dry 2h.Under room temperature, 1.6g PVDF-HFP is dissolved in the mixed solvent of 2.52g DMAc and 5.88g acetone.Continuous stirring
12h is to being completely dissolved, it is thus achieved that the PVDF-HFP spinning solution of 16wt%.Spinning solution is loaded in the syringe that capacity is 2mL,
Fltting speed is 3ml/h.Syringe needle is connected with the positive pole of high-voltage DC power supply, to complete 50 mesh rustless steels of pretreatment
Net, as receiving substrate, is connected with the negative pole of high-voltage DC power supply.Adjust spinning parameter: electrostatic spinning voltage is 19kV, stainless
Distance between draw point head and metallic substrates is adjusted to 15cm.Finally give appendix as shown in Figure 1 and have PVDF-HFP hydrophobic film
Metallic substrates, the form of PVDF-HFP hydrophobic film as shown in Figure 2: be stacked with between fiber, form a lot of hole, fiber table
Face unusual light, fibre diameter is relatively uniform.Hydrophobic film thickness is 50 μm, and fiber diameter is 1 μm, as shown in Figure 3 should
Hydrophobic film is 132 ° ± 3 ° to the contact angle of water.
As shown in Figure 4, it is the strip of 10 × 1 × 1cm by polyethylene (EPE) Foam machining, and it is assembled into 10 × 10 ×
10cm cube frame 3.The stainless (steel) wire of prepared appendix PVDF-HFP hydrophobic film is fixed on the five of EPE support periphery
In individual plane, assemble hollow oil sump tank 4 as shown in Figure 5.
Carry out oil-water separation: as shown in Figure 6, prepared oil sump tank 4 is placed in oil water mixture, opening surface court
On, it is ensured that oil water mixture did not have the top of oil sump tank 4；Oil water mixture is by being fixed with the Metal Substrate of appendix hydrophobic film
The end, is slowly into the inside of oil sump tank 4；Opening mechanical pump 5, the oil collected in oil sump tank 4 enters oil by mechanical pump 5
Mouth is detached and is entered into oil collection device 6 continuously.The oil collected after oil-water separation is carried out by measurement instrument for trace water
Test, oil-water separation efficiency reaches 99.9%.
Embodiment 2
300 mesh stainless (steel) wires are sequentially placed in acetone, ethanol solution, ultrasonic 10min；It is placed on afterwards in water, continues
Continuous ultrasonic 10min.Stainless (steel) wire after washing is placed in baking oven, under the conditions of 120 DEG C, dries 2h.Under room temperature, by molten for 3g PS
In the mixed solvent of 2.1g DMF and 4.9g THF, after continuous stirring 3h, the spinning obtaining 30wt% after continuing ageing 12h is molten
Liquid.Being loaded by spinning solution in the syringe that capacity is 2mL, fltting speed is 4ml/h.By syringe needle and high voltage direct current
The positive pole in source is connected, to complete 300 mesh stainless (steel) wires of pretreatment as receiving substrate, with the negative pole phase of high-voltage DC power supply
Even.Adjust spinning parameter: electrostatic spinning voltage is 8kV, and the distance between rustless steel syringe needle and metallic substrates is adjusted to 15cm.Final
Thickness to hydrophobic film is 35 μm.Gained hydrophobic film is placed in 40 DEG C of dry 24h in drying baker after completing by spinning, i.e. obtains
Micro-nano PS hydrophobic film.The average diameter of gained hydrophobic film is 300nm, and the contact angle to water is 154 ° ± 4 °.
Light plastics (politef) are processed as the strip of 10 × 1 × 1cm, and it is vertical to be assembled into 10 × 10 × 10cm
Cube framework.The stainless (steel) wire of the appendix PS hydrophobic film of preparation is fixed in five planes that light plastic stent is peripheral,
It is assembled into hollow oil sump tank 4.
Carry out oil-water separation: being placed in oil water mixture by prepared oil sump tank 4, opening surface is upward, it is ensured that profit
Mixture did not have the top of oil sump tank 4；Oil water mixture is entered lentamente by the metallic substrates being fixed with appendix hydrophobic film
Enter the inside to oil sump tank 4；Opening mechanical pump 5, the oil collected in oil sump tank 4 passes through the oiler of mechanical pump 5 by continuously
Detach and enter into oil collection device 6.The oil collected after oil-water separation is tested by measurement instrument for trace water, and profit divides
99% is reached from efficiency.
Embodiment 3
50 mesh phosphor-copper nets are placed in acetone, ethanol solution, ultrasonic 10min；It is placed on afterwards in water, continues ultrasonic
10min.Phosphor-copper net after washing is placed in baking oven, under the conditions of 120 DEG C, dries 2h.Under room temperature, weigh the PU polymer of 0.7g
Granule, joins in 9.1g DMF continuous stirring 12h to being completely dissolved, it is thus achieved that the spinning solution of 7wt%.Spinning solution is loaded
Capacity is in the syringe of 2mL, and fltting speed is 3ml/h.Syringe needle is connected with the positive pole of high-voltage DC power supply, with complete
Become 50 mesh phosphor-copper nets of pretreatment as receiving substrate, be connected with the negative pole of high-voltage DC power supply.Adjustment spinning parameter: Static Spinning
Filament voltage is 30kV, and the distance between rustless steel syringe needle and metallic substrates is adjusted to 35cm.Finally, it is thus achieved that hydrophobic film thickness is 30 μ
m.The average diameter of micro-nano PU hydrophobic film is 100nm, is 106 ° ± 4 ° to water contact angle.
It is the strip of 10 × 1 × 1cm by polyethylene (EPE) Foam machining, is assembled into 10 × 10 × 10cm cube frame
Frame.The phosphor-copper net of prepared appendix PU hydrophobic film is fixed in 5 planes that EPE support is peripheral, is assembled into hollow " oil-collecting
Case ".
Carry out oil-water separation: being placed in oil water mixture by prepared oil sump tank 4, opening surface is upward, it is ensured that profit
Mixture did not have the top of oil sump tank 4；Oil water mixture is entered lentamente by the metallic substrates being fixed with appendix hydrophobic film
Enter the inside to oil sump tank 4；Opening mechanical pump 5, the oil collected in oil sump tank 4 passes through the oiler of mechanical pump 5 by continuously
Detach and enter into oil collection device 6.The oil collected after oil-water separation is tested by measurement instrument for trace water, and profit divides
97% is reached from efficiency.
Embodiment 4:
300 mesh phosphor-copper nets are placed in acetone, ethanol solution, ultrasonic 10min；It is placed on afterwards in water, continues ultrasonic
10min.Phosphor-copper net after washing is placed in baking oven, under the conditions of 120 DEG C, dries 2h.Under room temperature, 2.0g PVDF is dissolved in
In 4.8g DMF and 3.2g acetone mixed solvent, continuous stirring 12h is to being completely dissolved, it is thus achieved that the PVDF of 20wt% concentration spins
Silk solution.Being loaded by spinning solution in the syringe that capacity is 2mL, fltting speed is 6ml/h.By syringe needle and high straightening
The positive pole of stream power supply is connected；To complete 300 mesh phosphor-copper nets of pretreatment as receiving substrate, with the negative pole phase of high-voltage DC power supply
Even.Adjust spinning parameter: electrostatic spinning voltage is 22kV, and the distance between rustless steel syringe needle and metallic substrates is adjusted to 20cm.Finally,
Obtaining hydrophobic film thickness is 40 μm.The average diameter of gained hydrophobic film is 2.0 μm, and the contact angle to water is 144 ° ± 4 °.
Light plastics (politef) are processed as strip, and are assembled into 15 × 10 × 8cm cube frame.Enter one
The phosphor-copper net of prepared load P VDF fibrous membrane is fixed in five planes that plastics (politef) support is peripheral by step, group
Dress up hollow " oil sump tank ".
Carry out oil-water separation: being placed in oil water mixture by prepared oil sump tank 4, opening surface is upward, it is ensured that profit
Mixture did not have the top of oil sump tank 4；Oil water mixture is entered lentamente by the metallic substrates being fixed with appendix hydrophobic film
Enter the inside to oil sump tank 4；Opening mechanical pump 5, the oil collected in oil sump tank 4 passes through the oiler of mechanical pump 5 by continuously
Detach and enter into oil collection device 6.The oil collected after oil-water separation is tested by measurement instrument for trace water, and profit divides
98.5% is reached from efficiency.
Embodiment 5
200 mesh stainless (steel) wires are placed in acetone, ethanol solution, ultrasonic 10min；It is placed on afterwards in water, continues super
Sound 10min.Stainless (steel) wire after washing is placed in baking oven, under the conditions of 120 DEG C, dries 2h.Under room temperature, 1.5g PLGA is added
Entering in the mixed solvent of 4.25g DMF and 4.25g acetone, continuous stirring 12h is to being completely dissolved, it is thus achieved that 15wt% concentration
Spinning solution.Being loaded by spinning solution in the syringe that capacity is 2mL, fltting speed is 0.4ml/h.By syringe needle with
The positive pole of high-voltage DC power supply is connected, to complete 200 mesh stainless (steel) wires of pretreatment as receiving substrate, with high-voltage DC power supply
Negative pole be connected.Adjust spinning parameter: electrostatic spinning voltage is 8kV, and the distance between rustless steel syringe needle and metallic substrates is adjusted to
6cm.Finally, it is thus achieved that hydrophobic film thickness is 50 μm, the average diameter of hydrophobic film is 3 μm, be 112 ° to the contact angle of water ±
3°。
Light plastics (polystyrene) are processed as strip, and are assembled into 15 × 10 × 10cm cube frame.Enter one
The stainless (steel) wire of prepared appendix PLGA hydrophobic film is fixed on peripheral five of light plastics (polystyrene) support and puts down by step
On face, it is assembled into hollow oil sump tank 4.
Carry out oil-water separation: being placed in oil water mixture by prepared oil sump tank 4, opening surface is upward, it is ensured that profit
Mixture did not have the top of oil sump tank 4；Oil water mixture is entered lentamente by the metallic substrates being fixed with appendix hydrophobic film
Enter the inside to oil sump tank 4；Opening mechanical pump 5, the oil collected in oil sump tank 4 passes through the oiler of mechanical pump 5 by continuously
Detach and enter into oil collection device 6 internal.The oil collected after oil-water separation is tested by measurement instrument for trace water, oil
Water separation efficiency reaches 98%.
Claims (7)
1. an oily-water seperating equipment efficient, continuous, it is characterised in that:
Described device includes oil sump tank, mechanical pump and oil collection device；Described oil sump tank is cube frame structure, described cube
The metallic substrates of appendix hydrophobic film, a face opening it is fixed with on five faces of body framework；The oiler of described mechanical pump leads to
Cross pipeline connect described oil sump tank, the oil-out of mechanical pump by pipeline connect described in oily collection device.
One the most according to claim 1 oily-water seperating equipment efficient, continuous, it is characterised in that: described hydrophobic film
Prepared on the metallic substrate by method of electrostatic spinning.
One the most according to claim 1 oily-water seperating equipment efficient, continuous, it is characterised in that: described appendix is hydrophobic
The metallic substrates of thin film, hydrophobic film is the fibrous membrane of hydrophobic oleophilic oil, and metallic substrates is wire netting, on described oil sump tank, dredges
Water thin film is positioned at the outside of oil sump tank, and metallic substrates is positioned at the inner side of oil sump tank.
One the most according to claim 1 oily-water seperating equipment efficient, continuous, it is characterised in that: described cube frame
Chosen material includes the one in plastics, EPE pearl wool or lightweight wooden stick.
One the most according to claim 4 oily-water seperating equipment efficient, continuous, it is characterised in that: described plastics select
One in politef, polystyrene or polypropylene.
One the most according to claim 1 oily-water seperating equipment efficient, continuous, it is characterised in that: described metallic substrates is
One in the stainless (steel) wire of 50～300 mesh or phosphor-copper net.
One the most according to claim 1 oily-water seperating equipment efficient, continuous, it is characterised in that: described hydrophobic film
Thickness is 30～50 μm；Fiber diameter is 100nm～3.0 μm.
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| CN201610739304.9A CN106310719A (en) | 2016-08-26 | 2016-08-26 | High efficiency and continuous oil-water separation device |
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| CN201610739304.9A CN106310719A (en) | 2016-08-26 | 2016-08-26 | High efficiency and continuous oil-water separation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109876496A (en) * | 2019-04-15 | 2019-06-14 | 中国科学院长春应用化学研究所 | A kind of nano fibrous membrane, preparation method and its application in water-oil separating |
| CN110104731A (en) * | 2019-06-12 | 2019-08-09 | 青岛科技大学 | A kind of experimental provision of continuous water-oil separating |
| CN110102085A (en) * | 2019-06-14 | 2019-08-09 | 四川轻化工大学 | The preparation method and oil-water separation method of oil water separator |
| CN114100199A (en) * | 2021-11-25 | 2022-03-01 | 北京化工大学 | Liquid-liquid extraction separation method applied to water quality alkyl mercury detection and special oil-water separation membrane thereof |
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| CN104436760A (en) * | 2014-10-27 | 2015-03-25 | 北京服装学院 | Magnetic response type high-efficiency oil-water separation fiber membrane and preparation method thereof |
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| US3679058A (en) * | 1970-01-27 | 1972-07-25 | Millard F Smith | Oil collection boom |
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| CN109876496A (en) * | 2019-04-15 | 2019-06-14 | 中国科学院长春应用化学研究所 | A kind of nano fibrous membrane, preparation method and its application in water-oil separating |
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| CN114100199A (en) * | 2021-11-25 | 2022-03-01 | 北京化工大学 | Liquid-liquid extraction separation method applied to water quality alkyl mercury detection and special oil-water separation membrane thereof |
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