CN110420503A - A kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate - Google Patents
A kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate Download PDFInfo
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- CN110420503A CN110420503A CN201910629431.7A CN201910629431A CN110420503A CN 110420503 A CN110420503 A CN 110420503A CN 201910629431 A CN201910629431 A CN 201910629431A CN 110420503 A CN110420503 A CN 110420503A
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- Prior art keywords
- super hydrophilic
- filtrate
- hard particles
- underwater superoleophobic
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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
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Abstract
The invention discloses a kind of preparation methods of super hydrophilic underwater superoleophobic hard particles filtrate, belong to field of waste water treatment.A kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate, comprising the following steps: A, provide natural hard granule filter material substrate；B, hard particles filter material substrate is pre-processed；C, aqueous polyurethane after potato residue NaOH activated in water solution, will be added and super hydrophilic underwater superoleophobic lotion is prepared；D, pretreated matrix filtrate is immersed in super hydrophilic underwater superoleophobic lotion, super hydrophilic underwater superoleophobic hard particles filtrate is obtained after sealed soak.The present invention has many advantages, such as that reagent materials are few, low in cost.The filtrate of preparation reaches 99.5% or more to the separative efficiency of oil-water mixture.
Description
Technical field
The invention belongs to field of waste water treatment, especially water-oil separating field, and in particular to a kind of super hydrophilic underwater super thin
The preparation method of oily hard particles filtrate.
Background technique
The industrial circles such as petroleum, chemical industry, metallurgy, machining and weaving generate oily waste water extensively.Especially petroleum is opened
It adopts in the oil field extracted water of industry, every production 1t crude oil about generates 2~3t of recovered water.It is dirty that oily waste water causes serious environment
Dye, constitutes serious threat to the living environment of the mankind.Therefore, the processing of oily waste water is always a Xiang Chong of people's research
Want technology, traditional oily water separation technique such as Gravity Separation, coagulation, air bearing etc., having that complicated for operation, operating cost is high etc. lacks
Point.Hard particles media filtration is common oily waste water deep treatment method, is combined as operating unit and other methods, example
Such as oil removal-filtering-biochemistry, oil removal-coarse-precipitating-sand filtration, natural subsidence-pressure floatation air-filtering.It is filtering
Unit, oil, water and filter material surface three-phase coexistence, the surface wettability of filtrate have a great impact to oil removal efficiency in filter bed.It crosses
Filter reason is mainly oleophobic effect and sticks.Oil droplet particle flows downward in filtering layer with water flow, when oil droplet grain diameter is greater than
When filtering layer pore-size, under the oleophobic effect of filter material surface, oil droplet is intercepted by filtrate, achievees the purpose that be removed；Work as oil droplet
Particle in transition process close to filter material surface when, if the oleophilic function by filter material surface, it will attach to filtrate and gone
It removes.
Summary of the invention
It is existing to solve the object of the present invention is to provide a kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate
There are filtrate hydrophily and the not strong problem of underwater oleophobic property.
The technical scheme is that a kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate, including with
Lower step:
A, natural hard granule filter material substrate is provided；
B, hard particles filter material substrate is pre-processed；
C, aqueous polyurethane after potato residue NaOH activated in water solution, will be added and super hydrophilic underwater superoleophobic leaching is prepared
Masking liquid；
D, pretreated matrix filtrate is immersed in super hydrophilic underwater superoleophobic lotion, is obtained after sealed soak super hydrophilic underwater
Superoleophobic hard particles filtrate.
As a further improvement of the present invention, the preparation process of the super hydrophilic underwater superoleophobic lotion of the step C is to incite somebody to action
Dry potato residue is sifted out with 300-400 mesh stainless steel, impregnates 1-4h at room temperature with the NaOH aqueous solution of 7-12%,
Sonic oscillation is carried out simultaneously, is then statically placed in 8-24 h under 0-10 DEG C of environment；It is dried at a temperature of 80-100 DEG C later
0.5-2 h adds ethyl alcohol, at room temperature magnetic agitation 1-10 h；It is eventually adding aqueous polyurethane stirring 5-60 min.
As a further improvement of the present invention, the mass ratio of the potato residue, aqueous polyurethane and ethyl alcohol is 1:
0.02-0.2:20-30。
As a further improvement of the present invention, the process conditions of the step D are, at room temperature sonic oscillation 1-10
Min, then sealed soak 12-72 h, then dried at 80-100 DEG C or less, it is finally immersed in 0.05-0.2mol/L sodium hydroxide water
10-60 min in solution, is cleaned up with deionized water, is dried at 80-100 DEG C or less, is obtained super hydrophilic underwater superoleophobic hard
Matter granule filter material.
As a further improvement of the present invention, the natural hard granule filter material is quartz sand, magnetic iron ore or manganese sand.
As a further improvement of the present invention, the partial size of the natural hard granule filter material is 0.3~2.0mm.
The present invention is prepared for a kind of super hydrophilic underwater superoleophobic hard particles filtrate, super hydrophilic underwater superoleophobic to refer to air
The contact angle of middle water is about 0 °, and the contact angle of underwater oil is greater than 150 °.For super hydrophilic underwater superoleophobic filtrate, when oil droplet is close
When filter material surface, spherical shape can be remained by its oleophobic effect, it is not easy to flow away, therefore have higher from the hole smaller than oil bead diameter
Removal efficiency.
The potato residue that the present invention uses is byproduct or waste in food processing industry, from a wealth of sources, price
It is cheap.Hydrophilic underwater superoleophobic hard particles filtrate is prepared using potato residue, the treatment of wastes with processes of wastes against one another can be reached, turned waste into wealth
Purpose.
The reaction mechanism is as follows by the present invention: potato residue is a kind of typical parents (not only hydrophilic but also oleophylic) property material, by
A large amount of double super parent's property material compositions such as starch, cellulose, pectin.Potato residue has good water-absorbing-retaining performance, is
Design the ideal chose of super-hydrophobic selective water-oil separating material under underwater is superoleophobic or oil.
Sodium hydroxide and ultrasound activate the cellulose components of potato residue.Potato residue activation process can be with
The active surface area for improving cellulose, the hydrogen bond of intramolecular is released, to increase the hydrophily of potato residue.Activation
Potato residue surface afterwards has more hydroxyl, has dispersibility well, is easy to be blended with aqueous polyurethane, forms horse
The multiple emulsion of bell potato residue and aqueous polyurethane.When lotion and natural hard granule filter material contact, aqueous polyurethane is in day
Right hard particles filter material surface adhesion, realizes potato residue introducing natural hard granule filter material surface, to increase natural
The hydrophily of hard particles filtrate.
The present invention prepare processing oily waste water using natural hard granule filter material as the super hydrophilic underwater superoleophobic hard of carrier
Matter granule filter material guarantees the water quality of oiliness sewage treatment water outlet with the feature that intensity is high, hydrophily and underwater oleophobic property are strong.
The present invention has many advantages, such as that reagent materials are few, low in cost.Separative efficiency of the filtrate of preparation to oil-water mixture
Reach 99.5% or more.
Specific embodiment
The following examples can further illustrate the present invention, but do not limit the invention in any way.
Embodiment 1:
Using quartz sand as matrix filtrate, partial size is 0.9 ~ 0.1.2 mm, and processing step is as follows:
1) quartz sand filter media impregnated, cleaned, dried；
2) 400 mesh stainless steels of dry potato residue are sifted out, impregnate 4h at room temperature with the NaOH aqueous solution of 9 %,
Sonic oscillation is carried out simultaneously, is then statically placed in 0 DEG C of 8 h of environment.Later in 100 DEG C of 0.5 h of drying, ethyl alcohol, room are added
Lower 5 h of magnetic agitation of temperature.It is eventually adding aqueous polyurethane and stirs 10 min.The matter of potato residue, aqueous polyurethane and ethyl alcohol
Amount is than being 1:0.02:30.
3) quartz sand filter media is immersed into super hydrophilic underwater superoleophobic lotion, sonic oscillation 2min, then close at room temperature
Envelope impregnates 48 h, then dries at 100 DEG C, is finally immersed in 30 min in 0.1 mol/L sodium hydrate aqueous solution, clear with deionized water
Wash clean is dried at 100 DEG C, obtains super hydrophilic underwater superoleophobic hard particles filtrate.
The contact angle of the filtrate water of preparation is about 0 °, and the contact angle of underwater oil is 152.4 °.The quartz sand filter media pair of preparation
The oil removal efficiency of emulsifiable oil waste water increases 7.1% than unmodified quartz sand filter media；After oil-water mixture separation, oil is dense in water
Degree is 17.3 mg/L, is the 47% of unmodified quartz sand filter media, removal rate reaches 99.6%.
Embodiment 2
Using magnetic iron ore as matrix filtrate, partial size is 0.3~0.6 mm, and processing step is as follows:
1) magnetic iron ore filtrate impregnated, cleaned, dried；
2) 300 mesh stainless steels of dry potato residue are sifted out, impregnate 1h at room temperature with the NaOH aqueous solution of 12 %,
Sonic oscillation is carried out simultaneously, is then statically placed in 10 DEG C of 24 h of environment.Later in 80 DEG C of 2 h of baking, ethyl alcohol, room temperature are added
Lower magnetic agitation 10h.It is eventually adding aqueous polyurethane and stirs 60 min.The quality of potato residue, aqueous polyurethane and ethyl alcohol
Than for 1:0.2:20.
3) magnetic iron ore filtrate is immersed into super hydrophilic underwater superoleophobic lotion, sonic oscillation 10min, then close at room temperature
Envelope impregnates 72 h, then dries at 80 DEG C, is finally immersed in 10 min in 0.2 mol/L sodium hydrate aqueous solution, clear with deionized water
Wash clean is dried at 80 DEG C, obtains super hydrophilic underwater superoleophobic hard particles filtrate.
The contact angle of the filtrate water of preparation is about 0 °, and the contact angle of underwater oil is 153.7 °.The magnetic iron ore filtrate pair of preparation
The oil removal efficiency of emulsifiable oil waste water increases 12.3% than unmodified magnetic iron ore filtrate；After oil-water mixture separation, oil is dense in water
Degree is 21.8 mg/L, is the 49.6% of unmodified magnetic iron ore filtrate, removal rate reaches 99.6%.
Embodiment 3
Using manganese sand as matrix filtrate, partial size is 1.5~2.0 mm, and processing step is as follows:
1) manganese sand filtering material impregnated, cleaned, dried；
2) 400 mesh stainless steels of dry potato residue are sifted out, impregnate 3h at room temperature with the NaOH aqueous solution of 7 %,
Sonic oscillation is carried out simultaneously, is then statically placed in 5 DEG C of 12 h of environment.Later in 90 DEG C of baking 1h, ethyl alcohol is added, at room temperature
Magnetic agitation 1h.It is eventually adding aqueous polyurethane and stirs 5 min.The mass ratio of potato residue, aqueous polyurethane and ethyl alcohol is
1:0.1:25。
3) manganese sand filtering material is immersed into super hydrophilic underwater superoleophobic lotion, sonic oscillation 1min, then seals at room temperature
12 h are impregnated, then are dried at 90 DEG C, 60 min in 0.05 mol/L sodium hydrate aqueous solution is finally immersed in, is cleaned with deionized water
Completely, it is dried at 90 DEG C, obtains super hydrophilic underwater superoleophobic hard particles filtrate.
The contact angle of the filtrate water of preparation is about 0 °, and the contact angle of underwater oil is 150.4 °.The manganese sand filtering material of preparation is to cream
The oil removal efficiency of carburetion waste water increases 7.8% than unmodified quartz sand filter media；After oil-water mixture separation, oil concentration in water
It is the 52.1% of unmodified manganese sand filtering material, removal rate reaches 99.5% for 22.6 mg/L.
Claims (6)
1. a kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate, it is characterised in that the following steps are included:
A, natural hard granule filter material substrate is provided；
B, hard particles filter material substrate is pre-processed；
C, aqueous polyurethane after potato residue NaOH activated in water solution, will be added and super hydrophilic underwater superoleophobic leaching is prepared
Masking liquid；
D, pretreated matrix filtrate is immersed in super hydrophilic underwater superoleophobic lotion, is obtained after sealed soak super hydrophilic underwater
Superoleophobic hard particles filtrate.
2. the preparation method of the super hydrophilic underwater superoleophobic hard particles filtrate of one kind according to claim 1, feature exist
In: the preparation process of the super hydrophilic underwater superoleophobic lotion of the step C is, by dry potato residue 300-400 mesh
Stainless steel sifts out, and impregnates 1-4h at room temperature with the NaOH aqueous solution of 7-12%, while carrying out sonic oscillation, then seals quiet
It is placed in 8-24 h under 0-10 DEG C of environment；0.5-2 h is dried at a temperature of 80-100 DEG C later, adds ethyl alcohol, at room temperature magnetic
Power stirs 1-10 h；It is eventually adding aqueous polyurethane stirring 5-60 min.
3. the preparation method of the super hydrophilic underwater superoleophobic hard particles filtrate of one kind according to claim 1 or 2, feature
Be: the mass ratio of the potato residue, aqueous polyurethane and ethyl alcohol is 1:0.02-0.2:20-30.
4. the preparation method of the super hydrophilic underwater superoleophobic hard particles filtrate of one kind according to claim 3, feature exist
It is in: the process conditions of the step D, at room temperature sonic oscillation 1-10 min, then sealed soak 12-72 h, then in 80-
100 DEG C or less drying, are finally immersed in 10-60 min in 0.05-0.2mol/L sodium hydrate aqueous solution, are cleaned with deionized water dry
Only, it is dried at 80-100 DEG C or less, obtains super hydrophilic underwater superoleophobic hard particles filtrate.
5. the preparation method of the super hydrophilic underwater superoleophobic hard particles filtrate of one kind according to claim 4, feature exist
In: the natural hard granule filter material is quartz sand, magnetic iron ore or manganese sand.
6. the preparation method of the super hydrophilic underwater superoleophobic hard particles filtrate of one kind according to claim 5, feature exist
In: the partial size of the natural hard granule filter material is 0.3~2.0mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910629431.7A CN110420503A (en) | 2019-07-12 | 2019-07-12 | A kind of preparation method of super hydrophilic underwater superoleophobic hard particles filtrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359310A (en) * | 2020-02-21 | 2020-07-03 | 东营远洁环保科技有限公司 | Modified filter material for treating petroleum sewage |
| CN114470970A (en) * | 2020-11-12 | 2022-05-13 | 中国石油化工股份有限公司 | Hydrophilic and oleophobic oil-water filtering material and preparation method thereof |
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| CN105935502A (en) * | 2016-05-10 | 2016-09-14 | 上海澍澎新材料科技有限公司 | Super hydrophilic and underwater super oleophobic oil-water separation screen film and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359310A (en) * | 2020-02-21 | 2020-07-03 | 东营远洁环保科技有限公司 | Modified filter material for treating petroleum sewage |
| CN114470970A (en) * | 2020-11-12 | 2022-05-13 | 中国石油化工股份有限公司 | Hydrophilic and oleophobic oil-water filtering material and preparation method thereof |
| CN114470970B (en) * | 2020-11-12 | 2023-06-23 | 中国石油化工股份有限公司 | Hydrophilic oleophobic oil-water filter material and preparation method thereof |
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Application publication date: 20191108 |
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