CN106044942A - Method for demulsifying emulsion in wastewater - Google Patents
Method for demulsifying emulsion in wastewater Download PDFInfo
- Publication number
- CN106044942A CN106044942A CN201610532379.XA CN201610532379A CN106044942A CN 106044942 A CN106044942 A CN 106044942A CN 201610532379 A CN201610532379 A CN 201610532379A CN 106044942 A CN106044942 A CN 106044942A
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- China
- Prior art keywords
- emulsion
- polypropylene nonwoven
- glycidyl methacrylate
- nonwoven
- modified polypropylene
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Classifications
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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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Physical Water Treatments (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for demulsifying emulsion in wastewater; comprising: 1), grafting glycidyl methacrylate to polypropylene nonwoven by means of ultrasonic irradiation or high-energy irradiation within a grafting range of 5%-120%; 2), opening epoxy groups of the glycidyl methacrylate on the surface of the polypropylene nonwoven by using an amine having 4-19 carbons, and constructing hydrophilic and hydrophobic sites on the surface of the polypropylene nonwoven to obtain the modified propylene nonwoven; 3), placing the modified polypropylene nonwoven in emulsion at 10-100 DEG C, stirring for 5-40 min to demulsify the emulsion, wherein a weight ratio of the modified polypropylene nonwoven to the emulsion is 0.01% to 10%. The method has no need for any energy, is low in cost, and is applicable to large-scale wastewater treatment; the method is free of any chemical reagents and is free of other pollutants to a water body.
Description
Technical field
The present invention relates to environment sewage treatment field, particularly relate to a kind of creaming of emulsion method in sewage.
Background technology
Emulsion is widely used in due to its superperformance in industry and life.The pollution of water body is more come by emulsion at present
The most serious, emulsion pollution problem remains a difficult problem the most unsolved.General breaking method can be divided into physicomechanical processes and
Physical-chemical process.Physicomechanical processes have electricity sedimentation, filter, ultrasonic etc.；Physical-chemical process mainly changes the interfacial property of emulsion
And breakdown of emulsion, as added demulsifier.Sichuan University Jinyang etc. use hydraulic rotator the emulsion of phosphoric acid-Tributyl phosphate ester to be carried out
Breakdown of emulsion (Cao Y, Jin Y, Li J, et al.Demulsification of the phosphoric acid-tributyl
phosphate(W/O)emulsion by hydrocyclone[J].Separation&Purification Technology,
2015,158:387-395.)；Poplar is little firm etc. uses heating and thermochemical mode that crude oil emulsion is carried out breakdown of emulsion；Oil is big
Learn that Feng Zhi is strong etc. to be developed a kind of biological demulsifying agent crude oil is carried out breakdown of emulsion.Yukishige Kondo etc. use ultraviolet irradiation
Emulsion containing the double photosensitive emulsifying agent of benzene class of azo is carried out method breakdown of emulsion and this photosensitive emulsifying agent is in the condition of visible ray
Under can recover again photosensitive property (Takahashi Y, Fukuyasu K, Horiuchi T, et al.Photoinduced
Demulsification of Emulsions Using a Photoresponsive Gemini Surfactant[J]
.Langmuir the Acs Journal of Surfaces&Colloids,2013,30(1):41-47.).Lanzhou University Liu
Beautiful etc. utilization forms stronger π-π effect and emulsion carries out breakdown of emulsion (Liu J, Li X, Jia between graphene oxide and emulsion
W,et al.Demulsification of Crude Oil-in-Water Emulsions Driven by Graphene
Oxide Nanosheets[J].Energy Fuels,2015,29:4644-4653.)。
These traditional breaking methods above-mentioned all compare consumed energy and can bring new pollutant.
Summary of the invention
For solving above-mentioned problems of the prior art, the present invention provides in the sewage of a kind of low energy consumption and environmental protection
Creaming of emulsion method.
As follows for this technical scheme:
A kind of creaming of emulsion method in sewage, comprises the following steps:
1) with method grafted methacrylic acid (+)-2,3-Epoxy-1-propanol on polypropylene nonwoven of ultraviolet irradiation or high-energy radiation
Ester, making percent grafting scope is 5%-120%；
2) with the amine containing 4-19 carbon by the epoxy of the glycidyl methacrylate on polypropylene nonwoven surface
Group is opened, and in the surface construction hydrophobe site of polypropylene non-woven fabric, prepares modified polypropylene nonwoven；
3) under the conditions of 10 DEG C-100 DEG C, modified polypropylene nonwoven is put in emulsion, stirs 5-40 minute,
Completing creaming of emulsion, the most modified polypropylene nonwoven is 0.01%-10% with the mass ratio of described emulsion.
Preferably, above-mentioned steps 3) in mixing time be 10-30 minute.
Preferably, above-mentioned steps 3) described in temperature range be 15 DEG C-60 DEG C.
The breaking method of the present invention is that addition can (surface has two with the adsorbent of quick adsorption emulsion molecule in emulsion
The polypropylene nonwoven of parent's property structure), by being removed by the emulsion molecule in emulsion, make the concentration of emulsion at critical glue
Below bundle concentration, prevent emulsion molecule to be again gathered into micelle, thus reach breakdown of emulsion purpose.The method can be widely applied to work
In industry and daily life.
When the concentration of emulsion is more than critical micelle concentration, containing substantial amounts of micelle in emulsion, but wherein possibly together with few
The individual molecule of amount, now adsorbent quick adsorption individual molecule so that the lowering of concentration of emulsion, the rest may be inferred, until emulsion
Concentration when being reduced to below the critical micelle concentration of this emulsion, emulsion is all presented in individual molecule, thus reaches brokenly
The purpose of breast.The method of this breakdown of emulsion need not demulsifier, it is not required that additional any energy.
Compared with other breaking method, the invention have the advantages that
(1) low energy consumption: by the way of quick adsorption, emulsion is carried out breakdown of emulsion, it is not necessary to additional any energy, low cost
Honest and clean, it is adaptable to large batch of sewage disposal；
(2) environmental protection: the method need not additional any chemical reagent, brings other to pollute thus without to water body
Thing；
(3) the method is possible not only to destroy the micelle in emulsion but also can remove the organic pollution in water.
Detailed description of the invention
Below in conjunction with being embodied as case, technical scheme is described in detail.
Example one
1) with method graft glycidyl methacrylate on polypropylene nonwoven of ultraviolet irradiation, percent grafting is made
It is 5%；2) with n-butylamine, the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface is opened, poly-
The surface construction hydrophobe site of propylene non-woven fabrics, prepares modified polypropylene nonwoven；At 15 DEG C, change with 0.01g
PP non-weaving cloth absorption 100mL after property contains the emulsion (density of emulsion of 80mg/L OPEO (TX-100)
It is about 1g/mL) (at 15 DEG C, the critical micelle concentration of TX-100 emulsion is 80mg/L).After stirring 5 minutes, the surface of emulsion is opened
Power is increased to 45mN/m (critical micelle concentration, the surface tension of emulsion is 20mN/m) from 20mN/m.The surface of emulsion after absorption
Tension force increases, and illustrates that the micelle in emulsion is destroyed.
Example two
1) with method graft glycidyl methacrylate on polypropylene nonwoven of high-energy radiation, percent grafting is made
It is 25%；2) with n-dodecylamine, the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface is opened,
In the surface construction hydrophobe site of polypropylene non-woven fabric, prepare modified polypropylene nonwoven；At 35 DEG C, use 0.1g
Modified PP non-weaving cloth absorption 100mL contains emulsion (emulsion close of 240mg/L NPE (NP-10)
Degree is about 1g/mL) (at 35 DEG C, the critical micelle concentration of NP-10 emulsion is 220mg/L).After stirring 15 minutes, the surface of emulsion
Tension force is increased to 50mN/m (critical micelle concentration, the surface tension of emulsion is 35.0mN/m) from 35.6mN/m.
Example three
1) with ultraviolet irradiation method graft glycidyl methacrylate on polypropylene nonwoven, the percent grafting is made to be
50%；2) with hexamethylene diamine, the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface is opened, poly-
The surface construction hydrophobe site of propylene non-woven fabrics, prepares modified polypropylene nonwoven；At 55 DEG C, modified with 1.0g
After the PP non-weaving cloth absorption 100mL emulsion (density of emulsion is about 1g/mL) that contains 70mg/L fatty alcohol-polyoxyethylene ether
(at 55 DEG C, the critical micelle concentration of fatty alcohol-polyoxyethylene ether emulsion is 60mg/L).After stirring 25 minutes, the surface of emulsion is opened
Power is increased to 55mN/m (critical micelle concentration, the surface tension of emulsion is 31.0mN/m) from 31.4mN/m.
Example four
1) with method grafted methacrylic acid (+)-2,3-Epoxy-1-propanol on polypropylene nonwoven of ultraviolet irradiation or high-energy radiation
Ester, making percent grafting is 75%；2) with n-amylamine by the epoxy of the glycidyl methacrylate on polypropylene nonwoven surface
Group is opened, and in the surface construction hydrophobe site of polypropylene non-woven fabric, prepares modified polypropylene nonwoven；At 75 DEG C
Under, the emulsion of 180mg/L OPEO (TX-100) is contained with PP non-weaving cloth absorption 100mL modified for 4.0g
(density of emulsion is about 1g/mL) (at 75 DEG C, the critical micelle concentration of TX-100 emulsion is 100mg/L).After stirring 35 minutes,
The surface tension of emulsion is increased to 45mN/m (critical micelle concentration, the surface tension of emulsion is 20mN/m) from 20mN/m.Absorption
The surface tension of rear emulsion increases, and illustrates that the micelle in emulsion is the most destroyed.
Example five
1) with method graft glycidyl methacrylate on polypropylene nonwoven of high-energy radiation, percent grafting is made
It is 100%；2) with positive 19 amine, the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface is opened,
In the surface construction hydrophobe site of polypropylene non-woven fabric, prepare modified polypropylene nonwoven；At 100 DEG C, use
PP non-weaving cloth absorption 100mL modified for 7.0g contains the emulsion (emulsion of 240mg/L NPE (NP-10)
Density be about 1g/mL) (at 100 DEG C, the critical micelle concentration of NP-10 emulsion is 240mg/L).After stirring 40 minutes, emulsion
Surface tension be increased to 50mN/m (critical micelle concentration, the surface tension of emulsion is 35.0mN/m) from 35.6mN/m.
Example six
1) with ultraviolet irradiation method graft glycidyl methacrylate on polypropylene nonwoven, the percent grafting is made to be
120%；2) with n-butylamine, the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface is opened, poly-
The surface construction hydrophobe site of propylene non-woven fabrics, prepares modified polypropylene nonwoven；At 45 DEG C, change with 10.0g
(density of emulsion is about 1g/ to the emulsion that PP non-weaving cloth absorption 100mL after property contains 70mg/L fatty alcohol-polyoxyethylene ether
ML) (at 45 DEG C, the critical micelle concentration of fatty alcohol-polyoxyethylene ether emulsion is 60mg/L).After stirring 10 minutes, the table of emulsion
Surface tension is increased to 55mN/m (critical micelle concentration, the surface tension of emulsion is 31.0mN/m) from 31.4mN/m.
The present invention carries out surface modification by the method for ultraviolet irradiation or high-energy radiation to polypropylene non-woven fabric, then with changing
Non-woven fabrics after property carries out breakdown of emulsion to the surfactant in waste water.The method can be effectively improved the surface tension of waste water, i.e.
The micelle in waste water can be destroyed.The method of this breakdown of emulsion need not add other medicament in waste water, but also can remove
Surfactant in waste water.
Claims (3)
1. creaming of emulsion method in a sewage, it is characterised in that comprise the following steps:
1) with method graft glycidyl methacrylate on polypropylene nonwoven of ultraviolet irradiation or high-energy radiation, make
Percent grafting scope is 5%-120%；
2) with the amine containing 4-19 carbon by the epoxide group of the glycidyl methacrylate on polypropylene nonwoven surface
Open, in the surface construction hydrophobe site of polypropylene non-woven fabric, prepare modified polypropylene nonwoven；
3) under the conditions of 10 DEG C-100 DEG C, modified polypropylene nonwoven is put in emulsion, stir 5-40 minute, complete
To creaming of emulsion, the most modified polypropylene nonwoven is 0.01%-10% with the mass ratio of described emulsion.
Method the most according to claim 1, it is characterised in that: step 3) in mixing time be 10-30 minute.
Method the most according to claim 1, it is characterised in that: step 3) described in temperature range be 15 DEG C-60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532379.XA CN106044942A (en) | 2016-07-07 | 2016-07-07 | Method for demulsifying emulsion in wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532379.XA CN106044942A (en) | 2016-07-07 | 2016-07-07 | Method for demulsifying emulsion in wastewater |
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| Publication Number | Publication Date |
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| CN106044942A true CN106044942A (en) | 2016-10-26 |
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ID=57185779
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| CN201610532379.XA Pending CN106044942A (en) | 2016-07-07 | 2016-07-07 | Method for demulsifying emulsion in wastewater |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6617267B2 (en) * | 1998-03-24 | 2003-09-09 | Nano-Tex, Llc | Modified textile and other materials and methods for their preparation |
| CN101435157A (en) * | 2008-12-19 | 2009-05-20 | 天津工业大学 | Method for producing butyl acrylate graft modification polypropylene oil suction fibre |
| GB2456900A (en) * | 2008-01-25 | 2009-08-05 | Gen Electric | Electron beam functionalised hydrophilic polymer coated membrane |
| CN102321216A (en) * | 2011-08-05 | 2012-01-18 | 中山市点石塑胶有限公司 | Copolymer of glycidyl methacrylate and polypropylene and preparation method thereof |
| CN102784625A (en) * | 2012-07-26 | 2012-11-21 | 湖北科技学院 | Radiation synthetic method for high-speed selective adsorption material |
| CN103911862A (en) * | 2014-03-24 | 2014-07-09 | 福建鑫华股份有限公司 | Floating oil removing material and preparation method thereof |
| CN104755543A (en) * | 2012-10-30 | 2015-07-01 | 可乐丽股份有限公司 | Porous graft copolymer particles, method for producing same, and adsorbent material using same |
| CN105126791A (en) * | 2015-09-07 | 2015-12-09 | 天津工业大学 | Preparation method of self-assembled microsphere-containing non-woven cloth for adsorbing volatile organic compound |
-
2016
- 2016-07-07 CN CN201610532379.XA patent/CN106044942A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6617267B2 (en) * | 1998-03-24 | 2003-09-09 | Nano-Tex, Llc | Modified textile and other materials and methods for their preparation |
| GB2456900A (en) * | 2008-01-25 | 2009-08-05 | Gen Electric | Electron beam functionalised hydrophilic polymer coated membrane |
| CN101435157A (en) * | 2008-12-19 | 2009-05-20 | 天津工业大学 | Method for producing butyl acrylate graft modification polypropylene oil suction fibre |
| CN102321216A (en) * | 2011-08-05 | 2012-01-18 | 中山市点石塑胶有限公司 | Copolymer of glycidyl methacrylate and polypropylene and preparation method thereof |
| CN102784625A (en) * | 2012-07-26 | 2012-11-21 | 湖北科技学院 | Radiation synthetic method for high-speed selective adsorption material |
| CN104755543A (en) * | 2012-10-30 | 2015-07-01 | 可乐丽股份有限公司 | Porous graft copolymer particles, method for producing same, and adsorbent material using same |
| CN103911862A (en) * | 2014-03-24 | 2014-07-09 | 福建鑫华股份有限公司 | Floating oil removing material and preparation method thereof |
| CN105126791A (en) * | 2015-09-07 | 2015-12-09 | 天津工业大学 | Preparation method of self-assembled microsphere-containing non-woven cloth for adsorbing volatile organic compound |
Non-Patent Citations (1)
| Title |
|---|
| ZHOU XIANGYU等: "Fabrication of Hydrophilic and Hydrophobic Sites on Polypropylene Nonwoven for Oil Spill Cleanup: Two Dilemmas Affecting Oil Sorption", 《ENVIRONMENTAL SCIENCE & TECHNOLOGY》 * |
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Application publication date: 20161026 |
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