CN105749756A - Preparation method of scale inhibitor for reverse osmosis membrane - Google Patents
Preparation method of scale inhibitor for reverse osmosis membrane Download PDFInfo
- Publication number
- CN105749756A CN105749756A CN201610249464.5A CN201610249464A CN105749756A CN 105749756 A CN105749756 A CN 105749756A CN 201610249464 A CN201610249464 A CN 201610249464A CN 105749756 A CN105749756 A CN 105749756A
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- China
- Prior art keywords
- preparation
- reverse osmosis
- cyclohexylamine
- deionized water
- carboxylic acid
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- 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
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a preparation method of a scale inhibitor for a reverse osmosis membrane.The preparation method is characterized by comprising: proportionally mixing and adding organic phosphoric carboxylic acid, polyacrylic acid, polyaspartic acid, cyclohexylamine, a nitro compound and deionized water in succession, heating to 50 DEG C, dropwise adding cyclohexylamine, charging the nitro compound and deionized water, reacting and stirring for about 1 h, and cooling to room temperature to obtain a product.The product has a molecular weight range of 1500 to 4000, and addition of the product in actual water treatment of the reverse osmosis membrane is 3-10 ppm.
Description
Technical field
The present invention relates to water-treatment technology field, for the preparation method of a kind of antisludging agent for osmosis-reverse membrane, its technology emphasis
It is the problem of the deposition of particulate matter on reverse osmosis membrane that solves.
Background technology
At present, reverse osmosis technology is the most increasingly widespread, is more and more applied to reusing sewage, desalinization, food, chemical industry
Etc. industry.Feed water by reverse osmosis water source mainly picks up from surface water, subsoil water and Zhong Shui, substantial amounts of float contained by these water sources
And colloid, but the pretreatment such as coagulation clarification and more medium filter can not be by the grains of sand trickle in water, the crud of ferrum, hard
The precipitate of degree, inorganic and organic colloid etc. are thoroughly removed, and so certainly will cause dirty stifled to reverse osmosis membrane.So, reverse osmosis system
System needs the antisludging agent adding dispersion hardness and colloidal solid effectively to guarantee the stable operation of system.
At present, domestic commonly used sodium hexameta phosphate is as the film antisludging agent of counter-infiltration system.This medicament exists substantially
Defect: easily decomposition, dispersing and antisludging weak effect.And owing to counter-infiltration system concentration is fast, concentration polarization phenomenon is serious, this medicament
More and more inapplicable.
During reverse osmosis deaslination, once occur fouling, the high PH in fouling region can accelerate the hydrolysis of some membrane material,
Generally after fouling a couple of days, the phenomenon that salt rejection rate declines i.e. can occur.Add antisludging agent, be possible to prevent hardness, colloid at film table
Face is precipitated.
It is highly effective that film dirt dispersion agent is used for preventing difficulty soluble salt from separating out precipitation on reverse osmosis membrane.They pass through
Delay and distort salt crystal growth to control the process of precipitation, make crystal be distorted in forming process, thus cannot generate
Fine and close crystallization.And film antisludging agent has peptizaiton, prevent particle aggregation from becoming to be enough to the bulky grain precipitated, the most just
To say that particulate material has little time to precipitate on the surface of the film in reverse osmosis concentrated water, the most with concentrated water drainage to device outside.
Antisludging agent for osmosis-reverse membrane is that a kind of water developed on the basis of membrane separation technique develops processes customizations
Product, start from the mid-1970s, have tended to perfect to the nineties, but development technology is simple, with low cost, reliable for effect persistently,
The film antisludging agent of favorable environment protection still has the biggest research and using value.
Summary of the invention
The invention provides the novel antisludging agent for osmosis-reverse membrane of a kind of efficient low-molecular-weight, it is possible to be effectively prevented former water
Middle particulate matter is deposited on film surface, is different from conventional circulating water antisludging agent completely as answering during antisludging agent for osmosis-reverse membrane
Use effect.
The present invention is the preparation method of a kind of antisludging agent for osmosis-reverse membrane, it is characterised in that:
Its composition includes organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate, cyclohexylamine, nitro compound and deionized water, its
In each weight percentages of components be:
Organic phosphine carboxylic acid 10-20%
Polyacrylic acid 10-30%
Poly-aspartate 5-15%
Cyclohexylamine 15-25%
Organosulfur compound 5-10%
Deionized water surplus
Described organosulfur compound is selected from isothiocyanate, Allifridin.
Its preparation method, for organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate are mixed in proportion and to be sequentially added into, is heated to
When 50 DEG C, dropping cyclohexylamine also adds nitro compound and deionized water, and reaction stirring about 1 hour is cooled to room temperature, i.e.
Obtaining product, products molecule weight range is 1500-4000, and in the actual water of reverse osmosis membrane processes, chemical feeding quantity is 3-10ppm.
Molecular weight product of the present invention is relatively low and narrow distribution, can solve hardness and colloid etc. on reverse osmosis membrane well
Grain deposition problems.Meanwhile, the present invention not only has preferable scale-inhibiting properties, and nontoxic, pollution-free.Reverse osmosis system can be improved
The work efficiency of system, greatly extends use time and the cleaning frequency of reverse osmosis membrane.
Detailed description of the invention
Embodiment 1
Choose raw material by weight percentage
Organic phosphine carboxylic acid 10%
Polyacrylic acid 10%
Poly-aspartate 5%
Cyclohexylamine 15%
Organosulfur compound 5%
Deionized water surplus
Organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate are mixed in proportion and are sequentially added into, when being heated to 50 DEG C, drips hexamethylene
Amine also adds isothiocyanic acid potassium and deionized water, reaction stirring about 1 hour, is cooled to room temperature.
Embodiment 2
Choose raw material by weight percentage
Organic phosphine carboxylic acid 20%
Polyacrylic acid 30%
Poly-aspartate 15%
Cyclohexylamine 25%
Organosulfur compound 10%
Deionized water surplus
Organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate are mixed in proportion and are sequentially added into, when being heated to 50 DEG C, drips hexamethylene
Amine also adds sodium isothiocyanate and deionized water, reaction stirring about 1 hour, is cooled to room temperature.
Embodiment 3
Choose raw material by weight percentage
Organic phosphine carboxylic acid 20%
Polyacrylic acid 30%
Poly-aspartate 15%
Cyclohexylamine 25%
Organosulfur compound 10%
Deionized water surplus
Organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate are mixed in proportion and are sequentially added into, when being heated to 50 DEG C, drips hexamethylene
Amine also adds Allifridin and deionized water, reaction stirring about 1 hour, is cooled to room temperature.
Application test and result
Antisludging agent for osmosis-reverse membrane kind is more in the market, and we select the PT0100 of representative U.S.'s company A
Resistance calcium carbonate and calcium sulfate Performance comparision has been carried out with the FLOCON135 antisludging agent of B company of Britain.
1, test specimen source
It is shown in Table 1
Table 1 test specimen is originated
| Business Name | Medicament title |
| Product of the present invention | SS-150 |
| Company A | PT0100 |
| B company | FLOCON135 |
2, resistance calcium carbonate test
2.1 test water: water distribution: Ca2+250mg/L；HCO3 -250mg/L。
2.2 experimental conditions: water temperature: 80 DEG C, time: 10h, dosing: 4mg/L.
2.3 test methods: see GB/T16632-1996
2.4 experiment calculation formula: scale inhibition performance=(C-C0)/(C1-C0)×100%
C: actual measurement Ca2+Concentration
C: the Ca of blank sample2+Concentration
C: the Ca in former water2+Concentration
2.5 result of the tests: be shown in Table 2
Table 2 calcium carbonate scale inhibition performance
| Business Name | Medicament title | Scale inhibition performance % |
| Product of the present invention | SS-150 | 100 |
| Company A | PT0100 | 96.8 |
| B company | FLOCON135 | 93.2 |
3, resistance calcium phosphate test
3.1 test water: water distribution: Ca2+250mg/L；PO4 3-5mg/L；PH is 9.0.
3.2 experimental conditions: water temperature: 80 DEG C, time: 10h, dosing: 4mg/L.
3.3 test methods: see GB/T22626-2008
3.4 experiment calculation formula: scale inhibition performance=(C-C0)/(C1-C0)×100%
C: actual measurement Ca2+Concentration
C: the Ca of blank sample2+Concentration
C: the Ca in former water2+Concentration
3.5 result of the tests: be shown in Table 3
Table 3 calcium phosphate scale inhibition performance
| Business Name | Medicament title | Scale inhibition performance % |
| Product of the present invention | SS-150 | 100 |
| Company A | PT0100 | 95.4 |
| B company | FLOCON135 | 96.2 |
From resistance calcium carbonate, calcium phosphate scale inhibition performance it can be seen that the practical application effect of product of the present invention, fully meet this
The bright requirement that can stop particulate matter fouling for reverse osmosis membrane.
Claims (2)
1. the present invention is the preparation method of a kind of antisludging agent for osmosis-reverse membrane, it is characterised in that:
Its composition includes organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate, cyclohexylamine, nitro compound and deionized water, its
In each weight percentages of components be:
Organic phosphine carboxylic acid 10-20%
Polyacrylic acid 10-30%
Poly-aspartate 5-15%
Cyclohexylamine 15-25%
Organosulfur compound 5-10%
Deionized water surplus
Described organosulfur compound is selected from isothiocyanate, Allifridin.
2. its preparation method is for be mixed in proportion be sequentially added into organic phosphine carboxylic acid, polyacrylic acid, poly-aspartate, is heated to 50
DEG C time, dropping cyclohexylamine also adds nitro compound and deionized water, and reaction stirring about 1 hour is cooled to room temperature, to obtain final product
Product, products molecule weight range is 1500-4000, and in the actual water of reverse osmosis membrane processes, chemical feeding quantity is 3-10ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249464.5A CN105749756A (en) | 2016-04-21 | 2016-04-21 | Preparation method of scale inhibitor for reverse osmosis membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249464.5A CN105749756A (en) | 2016-04-21 | 2016-04-21 | Preparation method of scale inhibitor for reverse osmosis membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105749756A true CN105749756A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610249464.5A Pending CN105749756A (en) | 2016-04-21 | 2016-04-21 | Preparation method of scale inhibitor for reverse osmosis membrane |
Country Status (1)
| Country | Link |
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| CN (1) | CN105749756A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242148A (en) * | 2016-08-31 | 2016-12-21 | 上海交通大学 | The method improving nickel-plating rinsing waste water online resource embrane method closed-system efficiency |
| CN110182976A (en) * | 2019-07-05 | 2019-08-30 | 武汉金坡环保科技有限公司 | A kind of reverse osmosis antisludging agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807287A (en) * | 2006-02-14 | 2006-07-26 | 高同柱 | Highly effective multifunctional reverse osmosis membrane antiscaling agent and its preparation method |
| CN101423299A (en) * | 2007-10-31 | 2009-05-06 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and preparation and use method thereof |
| CN104258734A (en) * | 2014-10-13 | 2015-01-07 | 淄博彬盛翔化工有限公司 | Film scale inhibitor and preparation method thereof |
| CN105126627A (en) * | 2015-08-26 | 2015-12-09 | 山东天庆科技发展有限公司 | Reverse osmosis membrane scale inhibitor and application thereof |
| CN105152365A (en) * | 2015-07-31 | 2015-12-16 | 潍坊友容实业有限公司 | Scale inhibitor for environment friendly seawater desalination membrane and usage method thereof |
-
2016
- 2016-04-21 CN CN201610249464.5A patent/CN105749756A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807287A (en) * | 2006-02-14 | 2006-07-26 | 高同柱 | Highly effective multifunctional reverse osmosis membrane antiscaling agent and its preparation method |
| CN101423299A (en) * | 2007-10-31 | 2009-05-06 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and preparation and use method thereof |
| CN104258734A (en) * | 2014-10-13 | 2015-01-07 | 淄博彬盛翔化工有限公司 | Film scale inhibitor and preparation method thereof |
| CN105152365A (en) * | 2015-07-31 | 2015-12-16 | 潍坊友容实业有限公司 | Scale inhibitor for environment friendly seawater desalination membrane and usage method thereof |
| CN105126627A (en) * | 2015-08-26 | 2015-12-09 | 山东天庆科技发展有限公司 | Reverse osmosis membrane scale inhibitor and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242148A (en) * | 2016-08-31 | 2016-12-21 | 上海交通大学 | The method improving nickel-plating rinsing waste water online resource embrane method closed-system efficiency |
| CN110182976A (en) * | 2019-07-05 | 2019-08-30 | 武汉金坡环保科技有限公司 | A kind of reverse osmosis antisludging agent |
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Application publication date: 20160713 |
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