CN100379691C - A kind of composite antiscalant for reverse osmosis system and its application - Google Patents
A kind of composite antiscalant for reverse osmosis system and its application Download PDFInfo
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- CN100379691C CN100379691C CNB2004101035254A CN200410103525A CN100379691C CN 100379691 C CN100379691 C CN 100379691C CN B2004101035254 A CNB2004101035254 A CN B2004101035254A CN 200410103525 A CN200410103525 A CN 200410103525A CN 100379691 C CN100379691 C CN 100379691C
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- reverse osmosis
- water
- acrylate homopolymer
- copolymer
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000012528 membrane Substances 0.000 claims abstract description 73
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229920001519 homopolymer Polymers 0.000 claims abstract description 62
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 31
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 62
- 229920001577 copolymer Polymers 0.000 claims description 43
- 239000002253 acid Substances 0.000 claims description 22
- 229920006243 acrylic copolymer Polymers 0.000 claims description 22
- 230000005764 inhibitory process Effects 0.000 claims description 18
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 claims description 13
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 13
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 claims description 11
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 53
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 13
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 9
- 230000008021 deposition Effects 0.000 abstract description 5
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 52
- 239000007787 solid Substances 0.000 description 46
- 239000011575 calcium Substances 0.000 description 34
- 238000002360 preparation method Methods 0.000 description 14
- 229920001296 polysiloxane Polymers 0.000 description 11
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
- 239000012496 blank sample Substances 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 230000003245 working effect Effects 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012552 review Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
本发明涉及一种用于反渗透系统的复合阻垢剂及其在反渗透水处理工艺过程中的应用，所述复合阻垢剂由丙烯酸均聚物和至少一种丙烯酸共聚物组成。本发明的复合阻垢剂用于反渗透系统水处理时，可解决反渗透膜上CaSO4和CaCO3的沉积问题，兼具一定的稳定SiO2和硅酸盐的性能。可有效地消除CaSO4和CaCO3沉积而带来的膜污染，提高反渗透系统的工作效率，延长反渗透膜及反渗透设备的使用寿命，降低反渗透的成本；且该反渗透膜用阻垢剂还具有无毒、无磷的特点。The invention relates to a composite antiscalant for reverse osmosis system and its application in reverse osmosis water treatment process. The composite antiscalant is composed of acrylic acid homopolymer and at least one acrylic acid copolymer. When the composite scale inhibitor of the present invention is used for water treatment in a reverse osmosis system, it can solve the deposition problem of CaSO 4 and CaCO 3 on the reverse osmosis membrane, and has a certain performance of stabilizing SiO 2 and silicate. It can effectively eliminate the membrane pollution caused by the deposition of CaSO 4 and CaCO 3 , improve the working efficiency of the reverse osmosis system, prolong the service life of the reverse osmosis membrane and reverse osmosis equipment, and reduce the cost of reverse osmosis; The scale agent is also non-toxic and phosphorus-free.
Description
Technical field
The present invention relates to a kind of composite scale inhibitor that is used for reverse osmosis system and, relate in particular to a kind of emphasis and solve CaSO on the reverse osmosis membrane in the application of reverse osmosis water treatment process
4And CaCO
3Deposition problems, have certain stable SiO concurrently
2Reverse osmosis system scale inhibitor special and the application in the reverse osmosis water treatment process thereof with the performance of silicate.
Background technology
Water resources is very important and valuable natural resources very.Along with development of modern industry, industrial water consumption sharply increases, and the waste water of Chan Shenging is also more and more thereupon, and the crisis of worldwide water source aggravates thereupon.With regard to China's water resources, there is urban water shortage more than half in the whole nation, and water pollution is very serious.
Reverse osmosis technology is the sixties in 20th century, efficient, the advanced embrane method water technology that grows up along with the development of mould material.Advantages such as no phase transformation, modularization, flow process are simple, easy to operate because reverse osmosis technology has, stable effluent quality, floor space are little, reduced investment, power consumption are low, this technical development is very rapid.
Reverse osmosis membrane processing technology mainly comprises nature pH value operation process and regulates two kinds of pH value operation process.When the water inlet of reverse osmosis membrane processing device be middle soft, in during low basicity water quality (low-hardness water in the abbreviation), adopt nature pH value operation process usually, that this operation process mainly solves is CaCO
3Deposition problems, take into account CaSO
4Deposition and SiO
2The harm that is brought with silicate; When the water inlet of reverse osmosis membrane processing device is high rigidity, high basicity water quality, adopt usually and regulate pH value operation process (abbreviation high hardness water), promptly control the pH value of water inlet with HCl, reduce the basicity in the recirculated water, and then anti-locking system fouling.That this operation process mainly solves is CaSO
4Deposition problems, take into account CaCO
3Deposition and SiO
2The harm that is brought with silicate.
In the reverse osmosis water treatment process, it is an important factor that influences reverse osmosis system working efficiency and film work-ing life that film pollutes.Pollute in order to eliminate various films effectively, improve the working efficiency of reverse osmosis system, prolong the work-ing life of equipment, before reverse-osmosis membrane element, add " reverse osmosis unit additive " usually water is carried out pre-treatment.
Scale inhibitors is good reverse osmosis pretreatment additive, and well behaved Scale inhibitors can suppress the formation of dirt, increases the work-ing life of reverse osmosis membrane, reduces the cost of reverse osmosis.At present, domestic research aspect exploitation Scale inhibitors and evaluation Scale inhibitors is also ripe far away, handles producer except that the discrete reverse osmosis water and uses the traditional Sodium hexametaphosphate 99 and acid, and needed efficient reverse osmosis antisludging agent all is from external import more than 90%.
United States Patent (USP) 4952327 discloses and has suppressed dirt (comprising calcium phosphate scale) sedimentary method in a kind of water medium that has or do not exist iron, comprise that the water solubility copolymer that adds effective quantity in water medium is to suppress the deposition and the growth of dirt, this multipolymer is the multipolymer that at least three kinds of different monomers form, as single unsaturated carboxylic acid, salt and/or the acid anhydrides of 3-5 carbon atom; Acryloyl alkylsulphonic acid and/or its salt; The multipolymer that styrene sulfonic acid forms, described multipolymer water soluble, and can effectively suppress dirty deposition, particularly calcium dirt, calcium phosphate, calcium sulfate and lime carbonate, this patent is not addressed its resistance silicon dirt performance.United States Patent (USP) 5256303 discloses a kind of method that dirt formed and/or disperseed iron that suppresses in reverse osmosis system, the Scale inhibitors that uses in this method comprises the acrylamide polymer (as acrylic acid/Methacrylamide sulfonic acid copolymer) that water-soluble organic phosphonate and N-replace.This Scale inhibitors can effectively suppress CaSO on the reverse osmosis membrane
4The deposition of dirt, its shortcoming has been to use organic phosphonate, and must control the temperature and the pH value of feedstream in the reverse osmosis system.
Summary of the invention
The contriver discovers: the composite scale inhibitor of being made up of acrylate homopolymer and acrylic copolymer is used for reverse osmosis system and can solves CaSO on the reverse osmosis membrane
4And CaCO
3Deposition problems, have certain stable SiO concurrently
2Performance with silicate.Can eliminate CaSO effectively
4And CaCO
3The film that deposits and bring pollutes.
The object of the present invention is to provide a kind of composite scale inhibitor that is used for reverse osmosis system.
Another object of the present invention is composite scale inhibitor provided by the invention is applied in the reverse osmosis water treatment process, is particularly suitable for emphasis and solves CaSO
4And CaCO
3Sedimentary reverse osmosis water treatment process.
For achieving the above object, the invention provides a kind of composite scale inhibitor that is used for reverse osmosis system, this Scale inhibitors is made up of acrylate homopolymer and at least a acrylic copolymer, and the limit viscosity number of described acrylate homopolymer is 0.060-0.085dLg
-1Described acrylic copolymer limit viscosity number is 0.065-0.095dLg
-1
The effect of acrylate homopolymer of the present invention is mainly resistance CaCO
3Dirt has certain resistance CaSO concurrently
4Dirty and stable SiO
2And the performance of silicate; The effect of acrylic copolymer of the present invention is mainly resistance CaSO
4Dirty and stable SiO
2And silicate, have certain resistance CaCO concurrently
3The dirt performance.
Acrylic copolymer of the present invention is copolymer or terpolymer.More preferably at least a vinylformic acid/Propylene glycol monoacrylate multipolymer, vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer, vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer, acrylic acid/esters/2-acrylamide-2-methyl-propyl sulfonic acid copolymer, vinylformic acid/itaconic acid copolymer, vinylformic acid/styrene sulfonic acid multipolymer, the acrylic acid multipolymer of being selected from.Wherein said acrylate is preferably from vinylformic acid C
1-8Ester is more preferably from methyl acrylate, ethyl propenoate, Propylene glycol monoacrylate.
The effective content proportioning of acrylate homopolymer and acrylic copolymer is 5 in the composite scale inhibitor of the present invention: 1-1: 5.
When preparing composite scale inhibitor of the present invention, the reinforced order of each component is unimportant, and acrylate homopolymer and acrylic copolymer are made into a kind of liquid medicine by predetermined mixed and get final product.
The present invention also provides a kind of method of scale inhibition that is used for reverse osmosis system, and its characteristics are to add composite scale inhibitor of the present invention in the reverse osmosis membrane water inlet.
When composite scale inhibitor of the present invention is used for reverse osmosis system, at different water quality conditions, the ratio that acrylate homopolymer and acrylic copolymer are added is slightly different: when the water inlet of reverse osmosis membrane system be middle soft, in during low basicity water quality, that Scale inhibitors mainly solves is CaCO
3Deposition problems, take into account CaSO
4Deposition and SiO
2With the harm that silicate is brought, then the effective content proportioning of preferred acrylate homopolymer of this antisludging agent for osmosis-reverse membrane and acrylic copolymer is 5: 1-1: 1; When the water inlet of reverse osmosis membrane system was high rigidity, high basicity water quality, the general employing regulated the pH operation process, added the pH value of HCl control water inlet, reduced the basicity of water quality, and that Scale inhibitors mainly solves is CaSO
4Deposition problems, take into account CaCO
3Deposition and SiO
2With the harm that silicate is brought, then the effective content proportioning of preferred acrylate homopolymer of this antisludging agent for osmosis-reverse membrane and acrylic copolymer is 1: 1-1: 5; SiO in the water inlet of reverse osmosis membrane system
2Content surpasses 20mgL
-1When (being called for short high silicon water), the adding effective content and should suitably strengthen of multipolymer, the effective content proportioning of preferred acrylate homopolymer of this antisludging agent for osmosis-reverse membrane and acrylic copolymer is 1: 2-1: 5.
Acrylate homopolymer of the present invention and acrylic copolymer add effective concentration and are 1-12mgL with respect to pending aqueous solution total amount
-1, be preferably 2-8mgL
-1
When composite scale inhibitor provided by the invention is used for the reverse osmosis system water treatment, can solve CaSO on the reverse osmosis membrane
4And CaCO
3Deposition problems, have certain stable SiO concurrently
2Performance with silicate.Can eliminate CaSO effectively
4And CaCO
3The film that deposits and bring pollutes, and improves the working efficiency of reverse osmosis system, prolongs the work-ing life of reverse osmosis membrane and reverse osmosis equipment, reduces the cost of reverse osmosis.And this antisludging agent for osmosis-reverse membrane also has nontoxic, without phosphorus characteristics.
Embodiment
The following examples will help to illustrate the present invention, but not limit to its scope.
The test raw water quality sees Table 1.
Table 1 test water quality
| The water quality numbering | Ca 2- | Total alkalinity | Total hardness | Cl - | SO 4 2- | pH | Specific conductivity | SiO 2 |
| 1 (middle low-hardness water) | 123 | 133 | 354 | 47 | 159 | 7.7 | 803 | 7 |
| 2 (high hardness waters) | 260 | 334 | 497 | 141 | 390 | 8.8 | 1871 | 13 |
| 3 (high silicon water) | 207 | 141 | 371 | 56 | 210 | 7.9 | 915 | 30 |
Annotate: pH does not have unit, and specific conductivity is μ s/cm, and its counit is mg/L, Ca
2+, total alkalinity, total hardness be all with CaCO
3Meter, down together.
The assessment of performance method of the antisludging agent for osmosis-reverse membrane of following embodiment gained is as follows:
Resistance calcium carbonate scale performance is got the former water of test, or with the Ca in the former water
2+, HCO
3 -1Mend finite concentration, add certain density (in effective concentration) antisludging agent for osmosis-reverse membrane, insulation 10h in 60 ± 1 ℃ of waters bath with thermostatic control remains Ca in the sampling analysis water of cooling back
2+Concentration, make blank sample simultaneously, and calculate scale inhibition performance.
The scale inhibition performance calculation formula is: scale inhibition performance=(C-C
0)/(C
1-C
0) * 100%
C: actual measurement Ca
2+Concentration
C
0: the Ca of blank sample
2+Concentration
C
1: the Ca in the former water
2+Concentration
Resistance calcium sulfate dirt performance is got the former water of test, or with the Ca in the former water
2+, SO
4 2-Mend finite concentration, add certain density (in effective concentration) antisludging agent for osmosis-reverse membrane, insulation 10h in 70 ± 1 ℃ of waters bath with thermostatic control remains Ca in the sampling analysis water of cooling back
2+Concentration, make blank sample simultaneously, and calculate scale inhibition performance.
The scale inhibition performance calculation formula is: scale inhibition performance=(C-C
0)/(C
1-C
0) * 100%
C: actual measurement Ca
2+Concentration
C
0: the Ca of blank sample
2+Concentration
C
1: the Ca in the former water
2+Concentration
Resistance silicon dirt performance is got the former water of test, or with the Ca in the former water
2+, silicone content mends finite concentration, adds certain density (in effective concentration) antisludging agent for osmosis-reverse membrane, insulation 10h in 80 ± 1 ℃ of waters bath with thermostatic control, excess silicon content in the sampling analysis water of cooling back is made blank sample simultaneously, and calculates scale inhibition performance.
The scale inhibition performance calculation formula is: scale inhibition performance=(C-C
0)/(C
1-C
0) * 100%
C: actual measurement silicone content
C
0: the silicone content of blank sample
C
1: the silicone content in the former water
Analytical procedure Ca
2+, SO
4 2-Method for measurement of concentration is analyzed and test method with reference to production department of China Petrochemical Industry development division water coolant " middle Ca
2+, SO
4 2-The measuring method of concentration.
Measuring method-molybdenum yellow the light-intensity method of silicon-dioxide in chapter 6 " monitoring of nonmetal inorganics " in " water and effluent monitoring analytical procedure " (third edition) that the measuring method of silicone content is write with reference to State Bureau of Environmental Protection, " water and effluent monitoring analytical procedure " editorial committee in 1989.
Embodiment 1
Getting limit viscosity number is 0.078dLg
-1(30 ℃ of measurements, as follows), solid content are 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.082dLg
-1, solid content is 30% acrylic acid multipolymer (mass ratio is 2: 1) 6.67g, is dissolved in the 6.66g water, is made into antisludging agent for osmosis-reverse membrane 1.Add antisludging agent for osmosis-reverse membrane 1 in test water 1.Adding concentration is 20mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of acrylic acid multipolymer is 2mgL
-1
Embodiment 2
Getting limit viscosity number is 0.078dLg
-1, solid content is 30% acrylate homopolymer 30g; Limit viscosity number is 0.082dLg
-1, solid content is 30% acrylic acid multipolymer (mass ratio is 2: 1) 6.67g, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 2.Add antisludging agent for osmosis-reverse membrane 2 in test water 1.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 9mgL
-1, the effective concentration that adds of acrylic acid multipolymer is 2mgL
-1
Embodiment 3
Getting limit viscosity number is 0.078dLg
-1, solid content is 30% acrylate homopolymer 20g; Limit viscosity number is 0.082dLg
-1, solid content is 30% acrylic acid multipolymer (mass ratio is 2: 1) 6.67g, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 3.Add antisludging agent for osmosis-reverse membrane 3 in test water 1.Adding concentration is 30mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 6mgL
-1, the effective concentration that adds of acrylic acid multipolymer is 2mgL
-1
Embodiment 4
Getting limit viscosity number is 0.083dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.080dLg
-1, solid content is vinylformic acid/Propylene glycol monoacrylate multipolymer (mass ratio is 3: 1) 10g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 4.Add antisludging agent for osmosis-reverse membrane 4 in test water 2.Adding concentration is 20mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/Propylene glycol monoacrylate multipolymer is 3mgL
-1
Embodiment 5
Regulate the pH value to 8.0 of test water 2.Getting limit viscosity number is 0.073dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.085dLg
-1, solid content is vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer (mass ratio is 2: 1: 1) 30g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 5.Add antisludging agent for osmosis-reverse membrane 5 in the test water 2 of regulating the pH value.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer is 9mgL
-1
Embodiment 6
Regulate the pH value to 8.0 of test water 2.Getting limit viscosity number is 0.073dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.085dLg
-1, solid content is vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer (mass ratio is 2: 1: 1) 10g of 30%; Limit viscosity number is 0.088dLg
-1, solid content is vinylformic acid/itaconic acid copolymer (mass ratio is 2: 1) 15g of 30%, is dissolved in the 8.33g water, is made into antisludging agent for osmosis-reverse membrane 6.Add antisludging agent for osmosis-reverse membrane 6 in the test water 2 of regulating the pH value.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer is 3mgL
-1, the effective concentration that adds of vinylformic acid/itaconic acid copolymer is 4.5mgL
-1
Embodiment 7
Getting limit viscosity number is 0.065dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.070dLg
-1, solid content is multipolymer (mass ratio is 2.5: the 1) 24g of vinylformic acid/methylene-succinic acid of 25%, is dissolved in the 9.33g water, is made into antisludging agent for osmosis-reverse membrane 7.Add antisludging agent for osmosis-reverse membrane 7 in test water 3.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/itaconic acid copolymer is 6mgL
-1
Embodiment 8
With the Ca in the test water 2
2+Concentration is mended 6000mgL
-1, SO
4 2-Concentration is mended 6000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 10g; Limit viscosity number is 0.082dLg
-1, solid content is vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 3: 1) 20g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 8.Add antisludging agent for osmosis-reverse membrane 8 in the test water 2 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 3mgL
-1, the effective concentration that adds of vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 6mgL
-1
Embodiment 9
With the Ca in the test water 2
2+Concentration is mended 6000mgL
-1, SO
4 2-Concentration is mended 6000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.082dLg
-1, solid content is vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 3: 1) 20g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 9.Add antisludging agent for osmosis-reverse membrane 9 in the test water 2 of above preparation.Adding concentration is 30mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 6mgL
-1
Embodiment 10
With the Ca in the test water 2
2+Concentration is mended 7000mgL
-1, SO
4 2-Concentration is mended 7000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 5g; Limit viscosity number is 0.082dLg
-1, solid content is vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 3: 1) 25g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 10.Add antisludging agent for osmosis-reverse membrane 10 in the test water 2 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 1.5mgL
-1, the effective concentration that adds of vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 7.5mgL
-1
Embodiment 11
With the Ca in the test water 2
2+Concentration is mended 7000mgL
-1, SO
4 2-Concentration is mended 7000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 5g; Limit viscosity number is 0.082dLg
-1, solid content is vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 3: 1) 15g of 30%; Limit viscosity number is 0.084dLg
-1, solid content is 30% acrylic acid multipolymer (mass ratio is 3: 1) 10g, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 11.Add antisludging agent for osmosis-reverse membrane 11 in the test water 2 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 1.5mgL
-1, the effective concentration that adds of vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 4.5mgL
-1, the effective concentration that adds of acrylic acid multipolymer is 3mgL
-1
Embodiment 12
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 10g; Limit viscosity number is 0.072dLg
-1, solid content is vinylformic acid/itaconic acid copolymer (mass ratio is 2.5: 1) 6.67g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 12.Add antisludging agent for osmosis-reverse membrane 12 in the test water 1 of above preparation.Adding concentration is 20mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 3mgL
-1, the effective concentration that adds of vinylformic acid/itaconic acid copolymer is 2mgL
-1
Embodiment 13
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 25g; Limit viscosity number is 0.072dLg
-1, solid content is vinylformic acid/itaconic acid copolymer (mass ratio is 2.5: 1) 6.67g of 30%, is dissolved in the 8.33g water, is made into antisludging agent for osmosis-reverse membrane 13.Add antisludging agent for osmosis-reverse membrane 13 in the test water 1 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 7.5mgL
-1, the effective concentration that adds of vinylformic acid/itaconic acid copolymer is 2mgL
-1
Embodiment 14
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Regulate the pH value to 8.0 of test water 1.Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 10g; Limit viscosity number is 0.087dLg
-1, solid content is vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 2: 1: 1) 6.67g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 14.Add antisludging agent for osmosis-reverse membrane 14 in the test water 1 of above preparation.Adding concentration is 20mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 3mgL
-1, the effective concentration that adds of vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 2mgL
-1
Embodiment 15
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Regulate the pH value to 8.0 of test water 1.Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 20g; Limit viscosity number is 0.087dLg
-1, solid content is vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 2: 1: 1) 6.67g of 30%, is dissolved in the 3.33g water, is made into antisludging agent for osmosis-reverse membrane 15.Add antisludging agent for osmosis-reverse membrane 15 in the test water 1 of above preparation.Adding concentration is 30mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 6mgL
-1, the effective concentration that adds of vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 2mgL
-1
Embodiment 16
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Regulate the pH value to 8.0 of test water 1.Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 25g; Limit viscosity number is 0.087dLg
-1, solid content is vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 2: 1: 1) 5g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 16.Add antisludging agent for osmosis-reverse membrane 16 in the test water 1 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 7.5 mgL
-1, the effective concentration that adds of vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 1.5mgL
-1
Embodiment 17
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1Regulate the pH value to 8.0 of test water 1.Getting limit viscosity number is 0.075dLg
-1, solid content is 30% acrylate homopolymer 20g; Limit viscosity number is 0.087dLg
-1, solid content is vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer (mass ratio is 2: 1: 1) 5g of 30%; Limit viscosity number is 0.086dLg
-1, solid content is vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer (mass ratio is 2: 1: 1) 5g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 17.Add antisludging agent for osmosis-reverse membrane 17 in the test water 1 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 6mgL
-1, the effective concentration that adds of vinylformic acid/ethyl propenoate/2-acrylamide-2-methyl-propyl sulfonic acid copolymer is 1.5mgL
-1, the effective concentration that adds of vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer is 1.5mgL
-1
Embodiment 18
With the Ca in the test water 3
2+Concentration is mended 300mgL
-1, silicone content is mended 300mgL
-1Getting limit viscosity number is 0.080dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.090dLg
-1, solid content is vinylformic acid/styrene sulfonic acid multipolymer (mass ratio is 3: 1) 13.33g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 18.Add antisludging agent for osmosis-reverse membrane 18 in the test water 3 of above preparation.Adding concentration is 30mg.L
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/styrene sulfonic acid multipolymer is 4mgL
-1
Embodiment 19
With the Ca in the test water 3
2+Concentration is mended 300mgL
-1, silicone content is mended 300mgL
-1Getting limit viscosity number is 0.080dLg
-1, solid content is 30% acrylate homopolymer 6.67g; Limit viscosity number is 0.090dLg
-1, solid content is vinylformic acid/styrene sulfonic acid multipolymer (mass ratio is 3: 1) 25g of 30%, is dissolved in the 8.33g water, is made into antisludging agent for osmosis-reverse membrane 19.Add antisludging agent for osmosis-reverse membrane 19 in the test water 3 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 2mgL
-1, the effective concentration that adds of vinylformic acid/styrene sulfonic acid multipolymer is 7.5mgL
-1
Embodiment 20
With the Ca in the test water 3
2+Concentration is mended 300mgL
-1, silicone content is mended 300mgL
-1Getting limit viscosity number is 0.080dLg
-1, solid content is 30% acrylate homopolymer 5g; Limit viscosity number is 0.090dLg
-1, solid content is vinylformic acid/styrene sulfonic acid multipolymer (mass ratio is 3: 1) 25g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 20.Add antisludging agent for osmosis-reverse membrane 20 in the test water 3 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 1.5mgL
-1, the effective concentration that adds of vinylformic acid/styrene sulfonic acid multipolymer is 7.5mgL
-1
Embodiment 21
With the Ca in the test water 3
2+Concentration is mended 300mgL
-1, silicone content is mended 300mgL
-1Getting limit viscosity number is 0.080dLg
-1, solid content is 30% acrylate homopolymer 5g; Limit viscosity number is 0.090dLg
-1, solid content is vinylformic acid/styrene sulfonic acid multipolymer (mass ratio is 3: 1) 15g of 30%, limit viscosity number is 0.084dLg
-1, solid content is vinylformic acid/itaconic acid copolymer (mass ratio is 3: 1) 10g of 30%, is dissolved in the 10g water, is made into antisludging agent for osmosis-reverse membrane 21.Add antisludging agent for osmosis-reverse membrane 21 in the test water 3 of above preparation.Adding concentration is 40mgL
-1Wherein the effective concentration that adds of acrylate homopolymer is 1.5mg.L
-1, the effective concentration that adds of vinylformic acid/styrene sulfonic acid multipolymer is 4.5mgL
-1, the effective concentration that adds of vinylformic acid/itaconic acid copolymer is 3mgL
-1
Comparative Examples 1
With the Ca in the test water 2
2+Concentration is mended 6000mgL
-1, 8O
4 2-Concentration is mended 6000mgL
-1Regulate the pH value to 8.0 of test water 2.Add traditional medicament Sodium hexametaphosphate 99 8mgL
-1
Comparative Examples 2
With the Ca in the test water 1
2+Concentration is mended 1000mgL
-1, HCO
3 -1Concentration is mended 1000mgL
-1The pH value of regulating test water 1 is 8.0.Add traditional medicament Sodium hexametaphosphate 99 8mgL
-1
Comparative Examples 3
With the Ca in the test water 3
2+Concentration is mended 300mgL
-1, silicone content is mended 300mgL
-1The pH value of regulating test water 3 is 8.0.Add traditional medicament Sodium hexametaphosphate 99 8mgL
-1
The resistance CaSO of the foregoing description 8-11, Comparative Examples 1 high spot reviews Scale inhibitors
4The dirt performance is for strengthening experiment condition, the scale-inhibiting properties difference of comparing embodiment and Comparative Examples, simple supply calcium ion and sulfate ion in the former water 2 of experiment.Because of the bicarbonate ion concentration in the water after the supply, silicone content are bigger with respect to the difference of calcium ion concn, numerical value is less, so do not investigate Scale inhibitors the resistance calcium carbonate scale in the water quality and stable SiO behind the supply ion
2Performance with silicate.The resistance CaCO of embodiment 12-17, Comparative Examples 2 high spot reviews Scale inhibitorss
3The dirt performance, embodiment 18-21, Comparative Examples 3 high spot reviews Scale inhibitorss are stablized SiO
2With the performance of silicate, principle is the same.Investigating Scale inhibitors resistance CaCO
3In the time of the dirt performance, higher because of the basicity in the water, move two kinds of technologies so adopted natural pH value to move and regulate the pH value.
The resistance calcium carbonate scale of above embodiment, Comparative Examples, resistance calcium sulfate dirt and resistance silicon dirt performance such as following table:
Above embodiment and Comparative Examples explanation, antisludging agent for osmosis-reverse membrane of the present invention has excellent resistance CaSO
4Dirt and resistance CaCO
3The dirt performance also has certain SiO that stablizes
2Performance with silicate.By the scale inhibition data of above embodiment as can be known, regulate pH value operation process in the higher water quality of calcium alkali, more help Scale inhibitors and bring into play usefulness, scale inhibition effect is better.
Claims (10)
1. a composite scale inhibitor that is used for reverse osmosis system is made up of acrylate homopolymer and at least a acrylic copolymer, and the limit viscosity number of described acrylate homopolymer is 0.060-0.085dLg
-1Described acrylic copolymer limit viscosity number is 0.065-0.095dLg
-1
2. composite scale inhibitor according to claim 1 is characterized in that described acrylic copolymer is copolymer or terpolymer.
3. composite scale inhibitor according to claim 2 is characterized in that described acrylic copolymer is at least a vinylformic acid/Propylene glycol monoacrylate multipolymer, vinylformic acid/Propylene glycol monoacrylate/methyl acrylate copolymer, vinylformic acid/2-acrylamide-2-methyl-propyl sulfonic acid copolymer, acrylic acid/esters/2-acrylamide-2-methyl-propyl sulfonic acid copolymer, vinylformic acid/itaconic acid copolymer, vinylformic acid/styrene sulfonic acid multipolymer, the acrylic acid multipolymer of being selected from.
4. according to each described composite scale inhibitor of claim 1-3, the effective content proportioning that it is characterized in that acrylate homopolymer and acrylic copolymer is 5: 1-1: 5.
5. a method of scale inhibition that is used in reverse osmosis membrane system is characterized in that adding each described composite scale inhibitor of claim 1-4 in the reverse osmosis membrane water inlet.
6. method of scale inhibition according to claim 5, it is characterized in that water inlet when reverse osmosis membrane system be middle soft, in during low basicity water quality, the effective content proportioning of acrylate homopolymer and acrylic copolymer is 5 in the described composite scale inhibitor: 1-1: 1.
7. method of scale inhibition according to claim 5 is characterized in that the effective content proportioning of acrylate homopolymer and acrylic copolymer is 1 in the described composite scale inhibitor: 1-1: 5 when the water inlet of reverse osmosis membrane system is high rigidity, high basicity water quality.
8. method of scale inhibition according to claim 5 is characterized in that SiO in the water inlet of reverse osmosis membrane system
2Content surpasses 20mgL
-1The time, the effective content proportioning of acrylate homopolymer and acrylic copolymer is 1 in the described composite scale inhibitor: 2-1: 5.
9. according to each described method of scale inhibition of claim 5-8, it is characterized in that described acrylate homopolymer and acrylic copolymer adding effective concentration and being 1-12mgL with respect to pending aqueous solution total amount
-1
10. method of scale inhibition according to claim 9 is characterized in that described acrylate homopolymer and acrylic copolymer adding effective concentration and being 2-8mgL with respect to pending aqueous solution total amount
-1
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|---|---|---|---|
| CNB2004101035254A CN100379691C (en) | 2004-12-30 | 2004-12-30 | A kind of composite antiscalant for reverse osmosis system and its application |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004101035254A CN100379691C (en) | 2004-12-30 | 2004-12-30 | A kind of composite antiscalant for reverse osmosis system and its application |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102285705B (en) * | 2010-06-21 | 2014-07-23 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN102397754B (en) * | 2010-09-09 | 2014-04-16 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and application thereof |
| CN102399017A (en) * | 2010-09-09 | 2012-04-04 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and application thereof |
| CN102397755B (en) * | 2010-09-09 | 2014-04-02 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and use thereof |
| US9221700B2 (en) * | 2010-12-22 | 2015-12-29 | Ecolab Usa Inc. | Method for inhibiting the formation and deposition of silica scale in aqueous systems |
| CN103143264B (en) * | 2011-12-07 | 2015-07-22 | 中国石油化工股份有限公司 | Cleaning agent composition and cleaning method for reverse osmosis membrane |
| CN103143261B (en) * | 2011-12-07 | 2015-05-13 | 中国石油化工股份有限公司 | Cleaning agent composition and cleaning method for reverse osmosis membrane |
| CN103408149B (en) * | 2013-08-09 | 2015-04-15 | 上海富茵环保科技有限公司 | Preparation process of silicate reverse osmosis scale inhibitor |
| CN103819009B (en) * | 2014-02-07 | 2015-09-30 | 山东泰和水处理科技股份有限公司 | A kind of silicon dirt scale suppression disperser composition |
| BR112016024584B1 (en) * | 2014-04-23 | 2022-07-12 | Rohm And Haas Company | METHOD FOR INHIBITING THE FORMATION OF SILICA FOCUS IN AN AQUEOUS SYSTEM |
| CN104043338B (en) * | 2014-06-30 | 2015-12-02 | 山东黄三角环保科技产业园有限公司 | Seawater and brackish water desalination reverse osmosis membrane antisludging agent and preparation technology thereof |
| CN105504176A (en) * | 2015-12-07 | 2016-04-20 | 湖北地大热能科技有限公司 | Acrylic acid/polymethyl methacrylate/acrylonitrile copolymer water antisludging agent and preparing method thereof |
| AR104517A1 (en) * | 2015-12-07 | 2017-07-26 | Dow Global Technologies Llc | METHOD FOR THE TREATMENT OF INHIBITION OF FRESH WATER INCRUSTATIONS USED IN A WELL OF OIL, GAS, OR GEOTHERMAL PRODUCTION OR UNDERGROUND TRAINING |
| CN108002553A (en) * | 2018-01-31 | 2018-05-08 | 山东大学 | A kind of scale inhibitor for circulating cooling water and preparation method and application |
| CN108854564A (en) * | 2018-08-21 | 2018-11-23 | 史怀国 | A kind of low-phosphorus antiincrustation agent for Treated sewage reusing reverse osmosis membrane |
| CN109012190A (en) * | 2018-09-18 | 2018-12-18 | 山东日益环保科技有限公司 | A kind of reverse osmosis antisludging agent and its preparation method and application |
| CN109970219B (en) * | 2019-04-03 | 2022-03-18 | 天津市中海水处理科技有限公司 | Reverse osmosis scale inhibitor and preparation method and application thereof |
| CN111732691B (en) * | 2020-06-23 | 2021-07-06 | 江苏富淼科技股份有限公司 | Core-shell structure membrane scale inhibitor and preparation method thereof |
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|---|---|---|---|---|
| US4952327A (en) * | 1986-12-08 | 1990-08-28 | The B. F. Goodrich Company | Scale control with terpolymers containing styrene sulfonic acid |
| CN1261331A (en) * | 1997-05-16 | 2000-07-26 | 恩格尔哈德公司 | Filter aid for clay processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4952327A (en) * | 1986-12-08 | 1990-08-28 | The B. F. Goodrich Company | Scale control with terpolymers containing styrene sulfonic acid |
| CN1261331A (en) * | 1997-05-16 | 2000-07-26 | 恩格尔哈德公司 | Filter aid for clay processing |
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