CN105478017A - Method for preparing filter membrane through water clarifier doping - Google Patents
Method for preparing filter membrane through water clarifier doping Download PDFInfo
- Publication number
- CN105478017A CN105478017A CN201510837430.3A CN201510837430A CN105478017A CN 105478017 A CN105478017 A CN 105478017A CN 201510837430 A CN201510837430 A CN 201510837430A CN 105478017 A CN105478017 A CN 105478017A
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- CN
- China
- Prior art keywords
- cleaning agent
- filter membrane
- water cleaning
- mixture
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0013—Casting processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0016—Coagulation
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- 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
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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
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/26—Spraying processes
Abstract
The invention relates to a filter membrane for sewage treatment and concretely relates to a method for preparing a filter membrane through water clarifier doping. The method comprises adding a film casting material into an organic solvent to obtain a film casting liquid according to a mass ratio of 5-40%, adding a water clarifier into the mixture according to a mass ratio of the water clarifier to the film casting material of 1-30%, heating the film casting liquid so that the film casting material and the water clarifier are fully dissolved to form a mixture, coating a flat plate with the mixture and immersing the flat plate with the mixture in a second solvent so that a cured filter membrane is formed, wherein the second solvent and the organic solvent are incompatible. The method realizes dissolution of the water clarifier for sewage treatment and the membrane material so that the water clarifier is cured, a sewage treatment agent loss is prevented, an agent use amount is reduced, a sewage treatment cost is reduced and anti-pollution performances of a membrane material are improved.
Description
Technical field
The present invention relates to a kind of filter membrane of sewage disposal, be specially the method that filter membrane is prepared in water cleaning agent doping.
Background technology
Along with the raising of oil extraction amount and the increase of exploitation difficulty, the oil-polluted water amount in oil extraction and process is increasing, and oil content is more and more higher, and sewage disposal is increasingly difficult.Oil-polluted water causes very large pollution to environment, constrains crude oil production, and its process improves the cost of exploitation and processing.Oil in oil-polluted water has quite a few to be with oil emulsion, and namely the form of O/w emulsion exists.Stability of emulsion is high, and water-oil separating difficulty, brings very large difficulty to oily waste water treatment.The main method of current process oil-polluted water in sewage, adds the chemical agent with demulsification, i.e. water cleaning agent, by destroying emulsion, and strengthening water-oil separating, thus reach the object of sewage disposal.The use of water cleaning agent needs specific temperature usually, and the energy consumption therefore heated is comparatively large, cannot reclaim after using meanwhile, cause medicament costly.UF membrane is also a kind of conventional sewage disposal technology, by adopting the membrane material with a certain size duct, utilize the difference of the size of molecule or drop, water is made to pass through membrane material under the effect of the pressure, and emulsion droplet is trapped, thus sewage is sieved, obtain lower the purifying waste water of oil content.Membrane material easily adsorbs by oiliness pollutant, pollutes, and membrane material characteristic is significantly declined, and is contaminated solution problem, often needs stop work cleaning or change membrane material, causes UF membrane cost higher.Meanwhile, existing membrane technology is generally used for the advanced treating for sewage, and the effect of preorder process is very large on the impact of membrane separating effect, therefore requires higher to preorder separation circuit.On the other hand, existing membrane separation technique is retained down emulsion, causes emulsion at film one lateral enrichment, forms high-concentration sewage.The process of this part sewage is very difficult.
Summary of the invention
The present invention is directed to that water cleaning agent consumption is large, heating energy consumption is large, and the problem such as the seriously polluted running cost of membrane separation technique is high, destroy oil hydrosol at a lower temperature, realize efficient water-oil separating and sewage disposal.
Concrete technical scheme is:
The method of filter membrane is prepared in water cleaning agent doping, comprises the following steps: casting film material joins in organic solvent prepares casting solution; The mass fraction of casting film material in casting solution is 5%-40%, then adds water cleaning agent, and the amount of water cleaning agent is the 1%-30% of casting film quality of materials; Casting solution is heated, casting film material and water cleaning agent is fully dissolved and obtains mixture; Mixture is coated on flat board, is soaked in the second solvent, obtain the filter membrane of coagulation forming; Second solvent is incompatible with described organic solvent.
Described organic solvent is dimethyl formamide, and casting film material is polyethersulfone resin, and water cleaning agent is DMEA1231.Described casting solution heating, the temperature of heating is 60 DEG C, agitating heating 4h.
By mixture coating on a glass, scrape straticulation with blade applicator, glass plate is immersed deionized water, leave standstill 24h, obtain the filter membrane of coagulation forming.
DMEA1231 is take hydramine as four block polyethers of initiator, and in molecular structure, the mass ratio of EO, PO, EO, PO is 1:2:3:1.
The method of filter membrane is prepared in water cleaning agent doping provided by the invention, the means taking water cleaning agent to combine with filter membrane carry out oily waste water treatment, on the one hand water cleaning agent is distributed in filter membrane surface, in conjunction with the effect of water cleaning agent to emulsion in sewage, with the mechanical presses effect of filter membrane duct to emulsion, emulsion droplet is destroyed at a lower temperature and in the shorter time, improves water-oil separating efficiency, utilize filter membrane to fix water cleaning agent on the other hand.
The method of filter membrane is prepared in water cleaning agent doping provided by the invention, is total to molten, serves the effect of solidification water cleaning agent by the water cleaning agent of sewage disposal and membrane material, sewage-treating agent can be prevented to run off, reduce dosing, reduce cost of sewage disposal, the antifouling property of membrane material can also be improved.
Detailed description of the invention
In conjunction with detailed description of the invention, technical scheme of the present invention is described.
Embodiment 1
Polyethersulfone resin joins in dimethyl formamide and prepares casting solution; The mass fraction of polyethersulfone resin in casting solution is 40%, then adds water cleaning agent DMEA1231, and the amount of water cleaning agent DMEA1231 is 20% of polyethersulfone resin; Casting solution is heated 60 DEG C, agitating heating 4h, polyethersulfone resin and water cleaning agent DMEA1231 are fully dissolved and obtains mixture; By mixture coating on a glass, scrape straticulation with blade applicator, glass plate is immersed deionized water, leave standstill 24h, obtain the filter membrane of coagulation forming.
Embodiment 2
Polyethersulfone resin joins in dimethyl formamide and prepares casting solution; The mass fraction of polyethersulfone resin in casting solution is 5%, then adds water cleaning agent DMEA1231, and the amount of water cleaning agent DMEA1231 is 1% of polyethersulfone resin; Casting solution is heated 60 DEG C, agitating heating 4h, polyethersulfone resin and water cleaning agent DMEA1231 are fully dissolved and obtains mixture; By mixture coating on a glass, scrape straticulation with blade applicator, glass plate is immersed deionized water, leave standstill 24h, obtain the filter membrane of coagulation forming.
Embodiment 3
Polyethersulfone resin joins in dimethyl formamide and prepares casting solution; The mass fraction of polyethersulfone resin in casting solution is 20%, then adds water cleaning agent DMEA1231, and the amount of water cleaning agent DMEA1231 is 30% of polyethersulfone resin; Casting solution is heated 60 DEG C, agitating heating 4h, polyethersulfone resin and water cleaning agent DMEA1231 are fully dissolved and obtains mixture; By mixture coating on a glass, scrape straticulation with blade applicator, glass plate is immersed deionized water, leave standstill 24h, obtain the filter membrane of coagulation forming.
The filter membrane of embodiment gained is cut into required size, loads filter.To take from the oil-polluted water of SZ 36-1 Field, sewage with oil rate about 4000 ~ 8000mg/L, filters with filter membrane, when filter pressure is 0.1MPa, filter in the filtrate obtained, aqueous phase oil-containing is about 200 ~ 300mg/L, residual crude oil is bubbled through the water column, and oil-water interfaces are clear.
Claims (4)
1. the method for filter membrane is prepared in water cleaning agent doping, it is characterized in that, comprises the following steps:
(1) casting film material joins in organic solvent and prepares casting solution; The mass fraction of casting film material in casting solution is 5%-40%, then adds water cleaning agent, and the amount of water cleaning agent is the 1%-30% of casting film quality of materials; Casting solution is heated, casting film material and water cleaning agent is fully dissolved and obtains mixture;
(2) mixture is coated on flat board, is soaked in the second solvent, obtain the filter membrane of coagulation forming; Second solvent is incompatible with described organic solvent.
2. the method for filter membrane is prepared in water cleaning agent doping according to claim 1, and it is characterized in that, described organic solvent is dimethyl formamide, and casting film material is polyethersulfone resin, and water cleaning agent is DMEA1231.
3. the method for filter membrane is prepared in water cleaning agent doping according to claim 1, it is characterized in that, described casting solution heating, the temperature of heating is 60 DEG C, agitating heating 4h.
4. the method for filter membrane is prepared in the water cleaning agent doping according to any one of Claim 1-3, it is characterized in that, described applies mixture on a glass, straticulation is scraped with blade applicator, glass plate is immersed deionized water, leaves standstill 24h, obtain the filter membrane of coagulation forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837430.3A CN105478017B (en) | 2015-11-25 | 2015-11-25 | The method that water cleaning agent doping prepares filter membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837430.3A CN105478017B (en) | 2015-11-25 | 2015-11-25 | The method that water cleaning agent doping prepares filter membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105478017A true CN105478017A (en) | 2016-04-13 |
| CN105478017B CN105478017B (en) | 2018-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510837430.3A Active CN105478017B (en) | 2015-11-25 | 2015-11-25 | The method that water cleaning agent doping prepares filter membrane |
Country Status (1)
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| CN (1) | CN105478017B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117484A (en) * | 2007-08-28 | 2008-02-06 | 深圳市广田环保涂料有限公司 | Metal-pseudo fluorine-carbon paint for building exterior wall and method for making same |
| US20080032055A1 (en) * | 2006-07-31 | 2008-02-07 | Honda Motor Co., Ltd. | Water-borne primer coating composition and method of forming coating film |
| CN103881112A (en) * | 2014-03-24 | 2014-06-25 | 中国海洋石油总公司 | Polymer flooding sewage clarifier as well as preparation method and application of polymer flooding sewage clarifier |
| CN104556446A (en) * | 2014-12-12 | 2015-04-29 | 利丰海洋工程(天津)有限公司 | Multi-effect double-medium filter |
-
2015
- 2015-11-25 CN CN201510837430.3A patent/CN105478017B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080032055A1 (en) * | 2006-07-31 | 2008-02-07 | Honda Motor Co., Ltd. | Water-borne primer coating composition and method of forming coating film |
| CN101117484A (en) * | 2007-08-28 | 2008-02-06 | 深圳市广田环保涂料有限公司 | Metal-pseudo fluorine-carbon paint for building exterior wall and method for making same |
| CN103881112A (en) * | 2014-03-24 | 2014-06-25 | 中国海洋石油总公司 | Polymer flooding sewage clarifier as well as preparation method and application of polymer flooding sewage clarifier |
| CN104556446A (en) * | 2014-12-12 | 2015-04-29 | 利丰海洋工程(天津)有限公司 | Multi-effect double-medium filter |
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| Publication number | Publication date |
|---|---|
| CN105478017B (en) | 2018-08-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shi Peng Inventor after: Lai Yang Inventor after: Duan Ming Inventor before: Duan Ming Inventor before: Shi Peng |
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