CN114653213A - Preparation method and application of cleaning agent for removing ultrafiltration membrane grease and organic matters - Google Patents
Preparation method and application of cleaning agent for removing ultrafiltration membrane grease and organic matters Download PDFInfo
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- CN114653213A CN114653213A CN202111605711.8A CN202111605711A CN114653213A CN 114653213 A CN114653213 A CN 114653213A CN 202111605711 A CN202111605711 A CN 202111605711A CN 114653213 A CN114653213 A CN 114653213A
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- 239000012528 membrane Substances 0.000 title claims abstract description 56
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 52
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000004519 grease Substances 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 15
- 239000003112 inhibitor Substances 0.000 claims abstract description 15
- 239000005708 Sodium hypochlorite Substances 0.000 claims abstract description 14
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 16
- 230000000813 microbial effect Effects 0.000 claims description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 12
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical group [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000003002 pH adjusting agent Substances 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims 6
- 238000007865 diluting Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 abstract description 3
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 230000009036 growth inhibition Effects 0.000 abstract description 2
- 231100000956 nontoxicity Toxicity 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 18
- 239000003054 catalyst Substances 0.000 description 10
- 229920001610 polycaprolactone Polymers 0.000 description 10
- 239000004632 polycaprolactone Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000013256 coordination polymer Substances 0.000 description 6
- 229920001795 coordination polymer Polymers 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- -1 aluminum alkoxide Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 2
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 2
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000011964 heteropoly acid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a preparation method and application of a cleaning agent for removing ultrafiltration membrane grease and organic matters, wherein the preparation method comprises the following steps: mixing anionic surfactant and pH regulator, adding microorganism inhibitor, and adding water. The synergistic effect of various functional groups contained in each component of the cleaning agent prepared by the invention can effectively improve the removal rate of grease and organic matters, and simultaneously can keep the membrane flux and prolong the service life of the membrane. The addition of sodium hypochlorite can realize the effective removal and growth inhibition of microorganisms. The cleaning agent has the advantages of simple preparation process, no three-waste discharge, good medicament stability and water solubility, biodegradable main components, no toxicity, no pollution, no corrosiveness, environmental protection and environmental friendliness.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to an isopolymolybdic acid coordination polymer catalyst and a preparation method and application thereof.
Background
Polycaprolactone (PCL) is a semi-crystalline aliphatic polyester high molecular polymer, with a crystallinity of about 45%, a melting point of 59-64 deg.C, and a glass transition temperature of-60 deg.C. PCL has good biocompatibility and biodegradability, and is a polyester-based high-molecular polymer approved by the Food and Drug Administration (FDA) for clinical use. Because the chain segment structure of the PCL contains nonpolar methylene and polar ester group, the PCL has degradability and also has flexibility, processability and mechanical properties similar to those of polyolefin. In the medical field, PCLs may be used as, for example, bandages, orthotics, surgical sutures, and the like.
PCL is typically obtained by ring opening polymerization of caprolactone over a catalyst. At present, the most researched catalysts comprise an aluminum alkoxide catalyst, a stannous octoate catalyst, a rare earth alkoxide catalyst, a lipase catalyst and the like (Labet M, Thielemans W.chem.Soc.Rev.2009,38, 3484-3504). The above catalysts are highly active but are sensitive to water and air, so that the polymerization must be carried out under strictly anhydrous and anaerobic conditions. The preparation of PCL is mostly carried out in organic solvents such as tetrahydrofuran, dichloromethane, toluene and the like, the continuous production requirement of the polymerization industry is difficult to adapt, and the use of low-boiling organic solvents causes great harm to the environment.
As a novel inorganic-organic hybrid material, the metal-organic coordination polymer has the characteristics of containing unsaturated metal active sites, functionalized organic ligands, large specific surface area and the like, and shows excellent catalytic activity in organic conversion such as oxidation reaction, condensation reaction, ester exchange reaction, alkylation reaction, polymerization reaction and the like. In recent years, it has been found that heteropoly acid salt coordination polymers (Shenn., Tian F., Chang J., Huang K. -L., Zhang Z. -H., Feng X., Gu J., Chen S. -C., He M. -Y., Chen Q. CrystEngComm 2020,22, 3656-. However, no document is reported on the preparation of high molecular weight PCL by using the isopolyacid coordination polymer to catalyze the ring-opening polymerization of caprolactone. The research and development of the novel isopolyoxometalate coordination polymer catalyst for synthesizing the PCL with high molecular weight and narrow molecular weight distribution has wide space, and also has strong vitality for the research and injection of biomedical degradable high molecular materials.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the prior art isopolymolybdic acid coordination polymer catalysts.
Therefore, one of the purposes of the invention is to overcome the defects of the existing cleaning agent and provide a preparation method of the cleaning agent for removing the grease and organic matters of the ultrafiltration membrane.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: a preparation method of a cleaning agent for removing grease and organic matters of an ultrafiltration membrane is characterized by comprising the following steps: the method comprises the following steps:
mixing anionic surfactant and pH adjuster: mixing an anionic surfactant and a pH regulator;
adding a microbial inhibitor: adding a microbial inhibitor, and uniformly mixing;
adding water: and adding deionized water to prepare the ultrafiltration membrane cleaning agent.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: mixing an anionic surfactant and a pH regulator, wherein the anionic surfactant comprises one or two of sodium dodecyl benzene sulfonate and sodium fatty alcohol-polyoxyethylene ether sulfate.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: mixing an anionic surfactant and a pH regulator, wherein the pH regulator is hydroxide, and the hydroxide is sodium hydroxide.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: adding the microbial inhibitor into the mixture, wherein the microbial inhibitor is sodium hypochlorite.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: the anionic surfactant is sodium dodecyl benzene sulfonate and sodium fatty alcohol-polyoxyethylene ether sulfate, the pH regulator is sodium hydroxide, and the microbial inhibitor is sodium hypochlorite and comprises the following components in percentage by weight: 25-35% of sodium dodecyl benzene sulfonate; 8.0-15.0% of fatty alcohol-polyoxyethylene ether sodium sulfate; 0.1 percent of sodium hydroxide; 0.2-0.5% of sodium hypochlorite; the balance being deionized water.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: mixing the anionic surfactant and the pH regulator, and stirring for 15-25 min at a rotating speed of 500-600 rpm.
As a preferred scheme of the preparation method of the cleaning agent for removing the grease and the organic matters of the ultrafiltration membrane, the preparation method comprises the following steps: and adding the microbial inhibitor into the microbial inhibitor, and stirring for 10-15 min at a rotating speed of 500-600 rpm.
The invention also aims to provide application of the cleaning agent for removing the ultrafiltration membrane to optimize organic matters.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: the application of the cleaning agent for removing the optimized organic matters of the ultrafiltration membrane is characterized in that the prepared ultrafiltration membrane cleaning agent and pure water are diluted according to the mass fraction ratio of 1: 8.
As a preferable scheme of the application of the cleaning agent for removing the ultrafiltration membrane optimized organic matter, the cleaning agent comprises the following components: when the ultrafiltration membrane cleaning agent is used, the pH value is controlled to be 10.0-11.5.
As a preferable scheme of the application of the cleaning agent for removing the ultrafiltration membrane optimized organic matter, the cleaning agent comprises the following components: in the heating process, the temperature of the reaction kettle in the oven is 160-200 ℃, and the heating time is 48-96 hours. Compared with the prior art, the invention has the following beneficial effects:
1. the synergistic effect of various functional groups contained in each component of the cleaning agent can effectively improve the removal rate of grease and organic matters, and simultaneously can keep the membrane flux and prolong the service life of the membrane. The addition of sodium hypochlorite can realize the effective removal and growth inhibition of microorganisms.
2. The cleaning agent has the advantages of simple preparation process, no three-waste discharge, good medicament stability and water solubility, biodegradable main components, no toxicity, no pollution, no corrosiveness, environmental protection and environmental friendliness.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. The following examples are set forth to enable those skilled in the art to practice the invention.
Example 1
The embodiment comprises the following raw materials in percentage by mass: 27.0% of sodium dodecyl benzene sulfonate, 9.0% of sodium fatty alcohol-polyoxyethylene ether sulfate, 0.1% of sodium hydroxide and 0.3% of sodium hypochlorite; 63.6% deionized water.
The preparation method of the ultrafiltration cleaning agent comprises the following steps: mixing sodium dodecyl benzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and sodium hydroxide in proportion, stirring at the stirring speed of 550rpm for 20min, then adding sodium hypochlorite, stirring at the stirring speed of 550rpm for 12min, and adding deionized water in proportion to prepare the ultrafiltration membrane cleaning agent.
The cleaning agent prepared in the embodiment is diluted by pure water according to the mass fraction ratio of 1:8 according to the cleaning agent, the pH value is controlled at 10.7, an ultrafiltration membrane seriously polluted by grease and organic matters is cleaned, and experimental data of membrane pressure difference and water permeation flux before and after cleaning are measured. The test results are shown in Table 1.
Table 1 cleaning agent test results
| State of state | Membrane differential pressure Mpa | Water flux m3/h |
| Before cleaning | 1.27 | 0.31 |
| After cleaning, cleaning | 0.92 | 0.44 |
As can be seen from the test results in table 1: the cleaning agent disclosed by the invention is used for cleaning an ultrafiltration membrane, so that the membrane pressure difference can be effectively reduced, and the water permeation flux is recovered, thereby showing that the cleaning agent disclosed by the invention has an excellent cleaning effect on grease and organic matters, and cannot damage the membrane.
Example 2
34.0 percent of sodium dodecyl benzene sulfonate, 13.5 percent of fatty alcohol-polyoxyethylene ether sodium sulfate, 0.1 percent of sodium hydroxide and 0.5 percent of sodium hypochlorite by mass percent; 51.9% deionized water.
The preparation method of the ultrafiltration cleaning agent comprises the following steps: mixing sodium dodecyl benzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and sodium hydroxide in proportion, stirring at the stirring speed of 550rpm for 20min, then adding sodium hypochlorite, stirring at the stirring speed of 550rpm for 12min, and adding deionized water in proportion to obtain the ultrafiltration membrane cleaning agent.
The cleaning agent prepared in the embodiment is diluted by pure water according to the mass fraction ratio of 1:8 according to the cleaning agent, the pH value is controlled at 10.7, an ultrafiltration membrane seriously polluted by grease and organic matters is cleaned, and experimental data of membrane pressure difference and water permeation flux before and after cleaning are measured. The test results are shown in Table 2.
Table 2 cleaning agent test results
| State of state | Membrane differential pressure Mpa | Water flux m3/h |
| Before cleaning | 1.45 | 0.26 |
| After cleaning, cleaning | 0.95 | 0.42 |
As can be seen from the test results in table 2: the cleaning agent disclosed by the invention is used for cleaning an ultrafiltration membrane, so that the membrane pressure difference can be effectively reduced, and the water permeation flux is recovered, thereby showing that the cleaning agent disclosed by the invention has an excellent cleaning effect on grease and organic matters, and cannot damage the membrane.
Example 3
31.5 percent of sodium dodecyl benzene sulfonate, 12.0 percent of sodium fatty alcohol-polyoxyethylene ether sulfate, 0.1 percent of sodium hydroxide and 0.4 percent of sodium hypochlorite by mass percent; 56.0% deionized water.
The preparation method of the ultrafiltration cleaning agent comprises the following steps: mixing sodium dodecyl benzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and sodium hydroxide in proportion, stirring at the stirring speed of 550rpm for 20min, then adding sodium hypochlorite, stirring at the stirring speed of 550rpm for 12min, and adding deionized water in proportion to obtain the ultrafiltration membrane cleaning agent.
The cleaning agent prepared in the embodiment is diluted by pure water according to the mass fraction ratio of 1:8 according to the cleaning agent, the pH value is controlled at 10.7, an ultrafiltration membrane seriously polluted by grease and organic matters is cleaned, and the weight of the membrane before and after cleaning, the membrane pressure difference and the water yield are measured. The test results are shown in Table 3.
Table 3 cleaning agent test results
| Status of state | Membrane differential pressure Mpa | Water yield m3/h |
| Before cleaning | 1.36 | 0.32 |
| After cleaning, cleaning | 0.96 | 0.40 |
As can be seen from the test results in table 3: the cleaning agent disclosed by the invention is used for cleaning an ultrafiltration membrane, so that the membrane pressure difference can be effectively reduced, and the water permeation flux is recovered, thereby showing that the cleaning agent disclosed by the invention has an excellent cleaning effect on grease and organic matters, and cannot damage the membrane.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A preparation method of a cleaning agent for removing grease and organic matters of an ultrafiltration membrane is characterized by comprising the following steps: the method comprises the following steps:
mixing anionic surfactant and pH adjuster: mixing an anionic surfactant and a pH regulator;
adding a microbial inhibitor: adding a microbial inhibitor, and uniformly mixing;
adding water: and adding deionized water to prepare the ultrafiltration membrane cleaning agent.
2. The preparation method of the detergent for removing the grease and the organic matters from the ultrafiltration membrane according to claim 1, which is characterized by comprising the following steps: in the mixed anionic surfactant and the pH regulator, the anionic surfactant comprises one or two of sodium dodecyl benzene sulfonate and sodium fatty alcohol-polyoxyethylene ether sulfate.
3. The preparation method of the detergent for removing the grease and the organic matters from the ultrafiltration membrane according to claim 1, which is characterized by comprising the following steps: in the mixed anionic surfactant and the pH regulator, the pH regulator is hydroxide, and the hydroxide is sodium hydroxide.
4. The preparation method of the detergent for removing the grease and the organic matters from the ultrafiltration membrane according to claim 1, which is characterized by comprising the following steps: the microbial inhibitor is added, and the microbial inhibitor is sodium hypochlorite.
5. The preparation method of the detergent for removing the grease and the organic matters from the ultrafiltration membrane according to the claims 1 to 4, which is characterized by comprising the following steps: the anionic surfactant is sodium dodecyl benzene sulfonate and sodium fatty alcohol-polyoxyethylene ether sulfate, the pH regulator is sodium hydroxide, and the microbial inhibitor is sodium hypochlorite, and comprises the following components in percentage by weight: 25-35% of sodium dodecyl benzene sulfonate; 8.0-15.0% of fatty alcohol-polyoxyethylene ether sodium sulfate; 0.1 percent of sodium hydroxide; 0.2-0.5% of sodium hypochlorite; the balance being deionized water.
6. The preparation method of the detergent for removing the grease and the organic matters from the ultrafiltration membrane according to claim 1, which is characterized by comprising the following steps: and stirring the mixed anionic surfactant and the pH regulator for 15-25 min at a rotating speed of 500-600 rpm.
7. The preparation method of the detergent for removing the grease and the organic matters on the ultrafiltration membrane according to claim 1 is characterized in that: adding the mixture into a microbial inhibitor, and stirring for 10-15 min at a rotating speed of 500-600 rpm after adding the microbial inhibitor.
8. The application of the cleaning agent for removing the ultrafiltration membrane to optimize the organic matters is characterized in that: diluting the prepared ultrafiltration membrane cleaning agent and pure water according to the mass fraction ratio of 1: 8.
9. The use of a cleaning agent for removing ultrafiltration membrane optimized organic matter according to claim 8, wherein: when the ultrafiltration membrane cleaning agent is used, the pH value is controlled to be 10.0-11.5.
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| CN112029592A (en) * | 2020-07-25 | 2020-12-04 | 上海宝聚表面技术有限公司 | Alkaline cleaning agent for hollow fiber ultrafiltration membrane and preparation method and application thereof |
-
2021
- 2021-12-25 CN CN202111605711.8A patent/CN114653213A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343217A (en) * | 2011-09-21 | 2012-02-08 | 石家庄开发区德赛化工有限公司 | Ultrafiltration membrane alkaline cleaner |
| US20150105313A1 (en) * | 2012-06-27 | 2015-04-16 | Henkel Ag & Co. Kgaa | Highly concentrated liquid washing or cleaning composition |
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