CN114307694A - Preparation method of sewage treatment membrane for pig farm - Google Patents
Preparation method of sewage treatment membrane for pig farm Download PDFInfo
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- CN114307694A CN114307694A CN202111506312.6A CN202111506312A CN114307694A CN 114307694 A CN114307694 A CN 114307694A CN 202111506312 A CN202111506312 A CN 202111506312A CN 114307694 A CN114307694 A CN 114307694A
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Abstract
The invention discloses a preparation method of a sewage treatment membrane for a pig farm, which comprises polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water. The composite filtering membrane has a complete and compact surface structure, wherein the composite membrane with the smaller thickness of the barrier layer still has higher stain interception rate while keeping higher pure water flux, and the barrier layer of the filtering membrane can shorten the water molecule channel stroke and improve the filtering efficiency of the membrane.
Description
Technical Field
The invention relates to the technical field of pig farm sewage treatment, in particular to a preparation method of a sewage treatment membrane for a pig farm.
Background
The pig is a vertebrate, mammal, and domestic animal, and is also ancient omnivorous mammal, and is mainly divided into domestic pig and wild pig. At present, pigs are considered to be the animals of the family suidae for short, the physical and physical characteristics of the pigs are different according to different varieties, the pig breeding place is a pig farm, and when the pigs are bred in the pig farm, sewage is often required to be treated.
The existing sewage treatment membrane for the pig farm has low sewage treatment efficiency, cannot meet the sewage treatment efficiency of the pig farm, and reduces the using effect of the sewage treatment membrane for the pig farm, so that the sewage treatment membrane for the pig farm needs to be redesigned urgently.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method of a sewage treatment membrane for a pig farm.
The invention provides a preparation method of a sewage treatment membrane for a pig farm, which comprises polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water.
As a further scheme of the invention, the feed additive comprises the following raw materials in parts by weight: 60-70 parts of polyether sulfone resin, 6-10 parts of functional filler, 10-18 parts of trifluoroethyl methacrylate, 30-50 parts of polyvinyl alcohol aqueous solution, 10-25 parts of trifluoroethyl methacrylate, 4-9 parts of sodium dodecyl sulfate, 40-80 parts of deionized water, 10-30 parts of glacial acetic acid, 16-48 parts of glycerol, 20-24 parts of pore-forming agent and 450 parts of N, N-dimethylformamide.
As a further scheme of the invention, the feed additive comprises the following raw materials in parts by weight: 65-70 parts of polyether sulfone resin, 8-10 parts of functional filler, 12-18 parts of trifluoroethyl methacrylate, 35-50 parts of polyvinyl alcohol aqueous solution, 15-25 parts of trifluoroethyl methacrylate, 6-9 parts of sodium dodecyl sulfate, 45-80 parts of deionized water, 15-30 parts of glacial acetic acid, 30-48 parts of glycerol, 21-24 parts of pore-forming agent and 450 parts of N, N-dimethylformamide 350-.
As a further scheme of the invention, the feed additive comprises the following raw materials in parts by weight: 65 parts of polyether sulfone resin, 8 parts of functional filler, 14 parts of trifluoroethyl methacrylate, 40 parts of polyvinyl alcohol aqueous solution, 18 parts of trifluoroethyl methacrylate, 6 parts of sodium dodecyl sulfate, 60 parts of deionized water, 20 parts of glacial acetic acid, 30 parts of glycerol, 22 parts of pore-foaming agent and 390 parts of N, N-dimethylformamide.
A preparation method of a sewage treatment membrane for a pig farm comprises the following steps:
1): cleaning and disinfecting containers and tools to be used, and drying the containers and the tools by using an air heater after disinfection;
2): weighing a proper amount of polyether sulfone resin, a functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, a trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, distilling the trifluoroethyl methacrylate, and storing the distilled trifluoroethyl methacrylate for later use;
3): adding a polyvinyl alcohol aqueous solution into a container, dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water into the container, stirring while dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water, standing for reaction for 7 hours after uniformly stirring and mixing, and pouring the distilled trifluoroethyl methacrylate into the container to obtain a solution A;
4): after the solution A in the step 3 is subjected to centrifugal filtration, placing the solution A in an oven for drying, wherein the drying temperature is 70-90 ℃ to obtain a mixture B;
5): respectively placing the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide obtained in the step 4 in a container for heating, wherein the heating temperature is 50-70 ℃, and after the heating is finished, pouring the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide into a large container and stirring by using a stirrer to obtain a casting solution;
6): pouring the mixture on a clean polytetrafluoroethylene plate by adopting a tape casting film forming method, carrying out blade coating to form a film, and drying at a certain temperature to obtain the filtering film.
As a further embodiment of the invention, the temperature for storing the trifluoroethyl methacrylate in the step 2 is 1-5 ℃.
The beneficial effects of the invention are as follows:
1. according to the invention, the functional filler is added into the raw materials of the membrane, the functional filler is modified carbon nitride, the carbon nitride is used as an environment-friendly material, the membrane has a large specific surface area and abundant adsorption sites, and the obtained functional filler is uniformly dispersed in the sewage treatment membrane, so that the membrane not only can exert a physical and chemical adsorption effect, but also can exert a photocatalytic effect, has strong sewage treatment capacity, and can effectively improve the treatment efficiency of the membrane.
2. The composite filtering membrane has a relatively complete and compact surface structure, wherein the composite membrane with the smaller thickness of the barrier layer still has higher stain interception rate while keeping higher pure water flux, and the barrier layer of the filtering membrane can shorten the water molecule channel stroke and improve the filtering efficiency of the membrane.
Drawings
FIG. 1 is a flow chart of a method for preparing a sewage treatment membrane for a pig farm according to the present invention;
FIG. 2 is a flow chart of the preparation of solution A of the method for preparing a sewage treatment membrane for pig farms according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-2, a method for preparing a sewage treatment membrane for a pig farm comprises polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water.
The embodiment comprises the following raw materials in parts by weight: 65 parts of polyether sulfone resin, 8 parts of functional filler, 14 parts of trifluoroethyl methacrylate, 40 parts of polyvinyl alcohol aqueous solution, 18 parts of trifluoroethyl methacrylate, 6 parts of sodium dodecyl sulfate, 60 parts of deionized water, 20 parts of glacial acetic acid, 30 parts of glycerol, 22 parts of pore-foaming agent and 390 parts of N, N-dimethylformamide.
The embodiment provides a preparation method of a sewage treatment membrane for a pig farm, which comprises the following steps:
1): cleaning and disinfecting containers and tools to be used, and drying the containers and the tools by using an air heater after disinfection;
2): weighing a proper amount of polyether sulfone resin, a functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, a trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, distilling the trifluoroethyl methacrylate, and storing the distilled trifluoroethyl methacrylate for later use;
3): adding a polyvinyl alcohol aqueous solution into a container, dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water into the container, stirring while dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water, standing for reaction for 7 hours after uniformly stirring and mixing, and pouring the distilled trifluoroethyl methacrylate into the container to obtain a solution A;
4): after the solution A in the step 3 is subjected to centrifugal filtration, placing the solution A in an oven for drying, wherein the drying temperature is 70-90 ℃ to obtain a mixture B;
5): respectively placing the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide obtained in the step 4 in a container for heating, wherein the heating temperature is 50-70 ℃, and after the heating is finished, pouring the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide into a large container and stirring by using a stirrer to obtain a casting solution;
6): pouring the mixture on a clean polytetrafluoroethylene plate by adopting a tape casting film forming method, carrying out blade coating to form a film, and drying at a certain temperature to obtain the filtering film.
In this example, the temperature at which trifluoroethyl methacrylate was stored in step 2 was 1 to 5 ℃.
According to the invention, the functional filler is added into the raw material of the membrane, the functional filler is modified carbon nitride, the carbon nitride is used as an environment-friendly material and has a larger specific surface area and abundant adsorption sites, the obtained functional filler is uniformly dispersed in the sewage treatment membrane, the physical and chemical adsorption effect and the photocatalysis effect can be exerted, the sewage treatment capacity is stronger, the treatment efficiency of the membrane can be effectively improved, the composite filtering membrane has a more complete and compact surface structure, the composite membrane with the smaller thickness of the barrier layer has a higher stain retention rate while keeping higher pure water flux, the barrier layer of the filtering membrane can shorten the water molecule channel stroke, and the filtering efficiency of the membrane is further improved.
Example 2
Referring to fig. 1-2, a method for preparing a sewage treatment membrane for a pig farm comprises polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water.
The embodiment comprises the following raw materials in parts by weight: 64 parts of polyether sulfone resin, 7 parts of functional filler, 13 parts of trifluoroethyl methacrylate, 39 parts of polyvinyl alcohol aqueous solution, 17 parts of trifluoroethyl methacrylate, 5 parts of sodium dodecyl sulfate, 59 parts of deionized water, 19 parts of glacial acetic acid, 29 parts of glycerol, 21 parts of pore-foaming agent and 380 parts of N, N-dimethylformamide.
The embodiment provides a preparation method of a sewage treatment membrane for a pig farm, which comprises the following steps:
1): cleaning and disinfecting containers and tools to be used, and drying the containers and the tools by using an air heater after disinfection;
2): weighing a proper amount of polyether sulfone resin, a functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, a trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, distilling the trifluoroethyl methacrylate, and storing the distilled trifluoroethyl methacrylate for later use;
3): adding a polyvinyl alcohol aqueous solution into a container, dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water into the container, stirring while dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water, standing for reaction for 7 hours after uniformly stirring and mixing, and pouring the distilled trifluoroethyl methacrylate into the container to obtain a solution A;
4): after the solution A in the step 3 is subjected to centrifugal filtration, placing the solution A in an oven for drying, wherein the drying temperature is 70-90 ℃ to obtain a mixture B;
5): respectively placing the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide obtained in the step 4 in a container for heating, wherein the heating temperature is 50-70 ℃, and after the heating is finished, pouring the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide into a large container and stirring by using a stirrer to obtain a casting solution;
6): pouring the mixture on a clean polytetrafluoroethylene plate by adopting a tape casting film forming method, carrying out blade coating to form a film, and drying at a certain temperature to obtain the filtering film.
In this example, the temperature at which trifluoroethyl methacrylate was stored in step 2 was 1 to 5 ℃.
According to the invention, the functional filler is added into the raw material of the membrane, the functional filler is modified carbon nitride, the carbon nitride is used as an environment-friendly material and has a larger specific surface area and abundant adsorption sites, the obtained functional filler is uniformly dispersed in the sewage treatment membrane, the physical and chemical adsorption effect and the photocatalysis effect can be exerted, the sewage treatment capacity is stronger, the treatment efficiency of the membrane can be effectively improved, the composite filtering membrane has a more complete and compact surface structure, the composite membrane with the smaller thickness of the barrier layer has a higher stain retention rate while keeping higher pure water flux, the barrier layer of the filtering membrane can shorten the water molecule channel stroke, and the filtering efficiency of the membrane is further improved.
Example 3
Referring to fig. 1-2, a method for preparing a sewage treatment membrane for a pig farm comprises polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water.
The embodiment comprises the following raw materials in parts by weight: 66 parts of polyether sulfone resin, 9 parts of functional filler, 15 parts of trifluoroethyl methacrylate, 41 parts of polyvinyl alcohol aqueous solution, 19 parts of trifluoroethyl methacrylate, 7 parts of sodium dodecyl sulfate, 62 parts of deionized water, 21 parts of glacial acetic acid, 31 parts of glycerol, 23 parts of pore-foaming agent and 400 parts of N, N-dimethylformamide.
The embodiment provides a preparation method of a sewage treatment membrane for a pig farm, which comprises the following steps:
1): cleaning and disinfecting containers and tools to be used, and drying the containers and the tools by using an air heater after disinfection;
2): weighing a proper amount of polyether sulfone resin, a functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, a trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, distilling the trifluoroethyl methacrylate, and storing the distilled trifluoroethyl methacrylate for later use;
3): adding a polyvinyl alcohol aqueous solution into a container, dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water into the container, stirring while dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water, standing for reaction for 7 hours after uniformly stirring and mixing, and pouring the distilled trifluoroethyl methacrylate into the container to obtain a solution A;
4): after the solution A in the step 3 is subjected to centrifugal filtration, placing the solution A in an oven for drying, wherein the drying temperature is 70-90 ℃ to obtain a mixture B;
5): respectively placing the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide obtained in the step 4 in a container for heating, wherein the heating temperature is 50-70 ℃, and after the heating is finished, pouring the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide into a large container and stirring by using a stirrer to obtain a casting solution;
6): pouring the mixture on a clean polytetrafluoroethylene plate by adopting a tape casting film forming method, carrying out blade coating to form a film, and drying at a certain temperature to obtain the filtering film.
In this example, the temperature at which trifluoroethyl methacrylate was stored in step 2 was 1 to 5 ℃.
According to the invention, the functional filler is added into the raw material of the membrane, the functional filler is modified carbon nitride, the carbon nitride is used as an environment-friendly material and has a larger specific surface area and abundant adsorption sites, the obtained functional filler is uniformly dispersed in the sewage treatment membrane, the physical and chemical adsorption effect and the photocatalysis effect can be exerted, the sewage treatment capacity is stronger, the treatment efficiency of the membrane can be effectively improved, the composite filtering membrane has a more complete and compact surface structure, the composite membrane with the smaller thickness of the barrier layer has a higher stain retention rate while keeping higher pure water flux, the barrier layer of the filtering membrane can shorten the water molecule channel stroke, and the filtering efficiency of the membrane is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The sewage treatment membrane for the pig farm is characterized by comprising polyether sulfone resin, functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, wherein the trifluoroethyl methacrylate emulsion is a mixture of trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water.
2. The sewage treatment membrane for the pig farm according to claim 1, characterized by comprising the following raw materials in parts by weight: 60-70 parts of polyether sulfone resin, 6-10 parts of functional filler, 10-18 parts of trifluoroethyl methacrylate, 30-50 parts of polyvinyl alcohol aqueous solution, 10-25 parts of trifluoroethyl methacrylate, 4-9 parts of sodium dodecyl sulfate, 40-80 parts of deionized water, 10-30 parts of glacial acetic acid, 16-48 parts of glycerol, 20-24 parts of pore-forming agent and 450 parts of N, N-dimethylformamide.
3. The sewage treatment membrane for the pig farm according to claim 1, characterized by comprising the following raw materials in parts by weight: 65-70 parts of polyether sulfone resin, 8-10 parts of functional filler, 12-18 parts of trifluoroethyl methacrylate, 35-50 parts of polyvinyl alcohol aqueous solution, 15-25 parts of trifluoroethyl methacrylate, 6-9 parts of sodium dodecyl sulfate, 45-80 parts of deionized water, 15-30 parts of glacial acetic acid, 30-48 parts of glycerol, 21-24 parts of pore-forming agent and 450 parts of N, N-dimethylformamide 350-.
4. The sewage treatment membrane for the pig farm according to claim 1, characterized by comprising the following raw materials in parts by weight: 65 parts of polyether sulfone resin, 8 parts of functional filler, 14 parts of trifluoroethyl methacrylate, 40 parts of polyvinyl alcohol aqueous solution, 18 parts of trifluoroethyl methacrylate, 6 parts of sodium dodecyl sulfate, 60 parts of deionized water, 20 parts of glacial acetic acid, 30 parts of glycerol, 22 parts of pore-foaming agent and 390 parts of N, N-dimethylformamide.
5. A preparation method of a sewage treatment membrane for a pig farm is characterized by comprising the following steps:
1): cleaning and disinfecting containers and tools to be used, and drying the containers and the tools by using an air heater after disinfection;
2): weighing a proper amount of polyether sulfone resin, a functional filler, trifluoroethyl methacrylate, a polyvinyl alcohol aqueous solution, a trifluoroethyl methacrylate emulsion, glacial acetic acid, glycerol, a pore-forming agent and N, N-dimethylformamide, distilling the trifluoroethyl methacrylate, and storing the distilled trifluoroethyl methacrylate for later use;
3): adding a polyvinyl alcohol aqueous solution into a container, dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water into the container, stirring while dropwise adding trifluoroethyl methacrylate, sodium dodecyl sulfate and deionized water, standing for reaction for 7 hours after uniformly stirring and mixing, and pouring the distilled trifluoroethyl methacrylate into the container to obtain a solution A;
4): after the solution A in the step 3 is subjected to centrifugal filtration, placing the solution A in an oven for drying, wherein the drying temperature is 70-90 ℃ to obtain a mixture B;
5): respectively placing the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide obtained in the step 4 in a container for heating, wherein the heating temperature is 50-70 ℃, and after the heating is finished, pouring the mixture B, the polyether sulfone resin, the functional filler, the glacial acetic acid, the glycerol, the pore-forming agent and the N, N-dimethylformamide into a large container and stirring by using a stirrer to obtain a casting solution;
6): pouring the mixture on a clean polytetrafluoroethylene plate by adopting a tape casting film forming method, carrying out blade coating to form a film, and drying at a certain temperature to obtain the filtering film.
6. The method for preparing a sewage treatment membrane for a pig farm according to claim 5, wherein the temperature for storing the trifluoroethyl methacrylate in the step 2 is 1-5 ℃.
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| CN202111506312.6A CN114307694A (en) | 2021-12-10 | 2021-12-10 | Preparation method of sewage treatment membrane for pig farm |
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| CN202111506312.6A CN114307694A (en) | 2021-12-10 | 2021-12-10 | Preparation method of sewage treatment membrane for pig farm |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538578A (en) * | 2019-09-06 | 2019-12-06 | 苏州清溪环保科技有限公司 | Sewage treatment membrane with high decontamination efficiency and preparation method thereof |
| WO2020134835A1 (en) * | 2018-12-26 | 2020-07-02 | 中国科学院深圳先进技术研究院 | Antibacterial composite nanofiber membrane, manufacturing method for same, and applications thereof |
| US10843138B1 (en) * | 2019-10-07 | 2020-11-24 | King Abdulaziz University | Cellulose acetate V/ZN photocatalytic material |
| CN112058100A (en) * | 2020-09-14 | 2020-12-11 | 陈家校 | Preparation method of filtering membrane applied to sewage treatment |
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2021
- 2021-12-10 CN CN202111506312.6A patent/CN114307694A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134835A1 (en) * | 2018-12-26 | 2020-07-02 | 中国科学院深圳先进技术研究院 | Antibacterial composite nanofiber membrane, manufacturing method for same, and applications thereof |
| CN110538578A (en) * | 2019-09-06 | 2019-12-06 | 苏州清溪环保科技有限公司 | Sewage treatment membrane with high decontamination efficiency and preparation method thereof |
| US10843138B1 (en) * | 2019-10-07 | 2020-11-24 | King Abdulaziz University | Cellulose acetate V/ZN photocatalytic material |
| CN112058100A (en) * | 2020-09-14 | 2020-12-11 | 陈家校 | Preparation method of filtering membrane applied to sewage treatment |
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