CN110141971A - Cleaning agent and preparation method thereof for counter-infiltration system - Google Patents
Cleaning agent and preparation method thereof for counter-infiltration system Download PDFInfo
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- CN110141971A CN110141971A CN201811512295.5A CN201811512295A CN110141971A CN 110141971 A CN110141971 A CN 110141971A CN 201811512295 A CN201811512295 A CN 201811512295A CN 110141971 A CN110141971 A CN 110141971A
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- cleaning agent
- counter
- infiltration system
- cleaning
- surfactant
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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
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- B01D65/022—Membrane sterilisation
-
- 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
-
- 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
- B01D2321/162—Use of acids
-
- 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
- B01D2321/164—Use of bases
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The cleaning agent and preparation method thereof that the present invention relates to a kind of for counter-infiltration system, it by weight percentage include: poly-epoxy succinic acid 0.8%-1%, sodium nitrilo triacetate 3.8%-4.5%, chelating agent 23%-29%, surfactant 7%-15%, fungicide 15-30ppm, surplus is deionized water.Aminotriacetic acid is formed by scaling fouling for oxide, organic deposition to the corrosion-free effect of reverse-osmosis membrane element in the present invention, there is stronger removing and removal effect；Surfactant in cleaning agent can rapid osmotic, effectively remove dirt；Reverse osmosis cleaning agent cleaning effect of the invention is good, extends the service life of film.Has many advantages, such as simple production process, easy to use, environmentally friendly.
Description
Technical field
The present invention relates to a kind of water-treatment technology field more particularly to a kind of cleaning agents and its system for counter-infiltration system
Preparation Method.
Background technique
With the quickening of industrial technology and process, industrial water demand largely increases, the in short supply and consciousness of saving water of water resource
Increase, China attaches great importance to the purified treatment of industrial water, drinking water and the sewage of discharge, at present reverse osmosis membrane water
Treatment process is one of the main method of advanced treatment of wastewater reuse, has been widely used in pure water preparation, boiler feedwater, seawater
The fields such as desalination, wastewater treatment and city sewage deep treatment.
Reverse osmosis surface is due in raw water the features such as water quality inferiority, water quality complexity, colloid, high bacterium algae content, water-treated
Cheng Zhonghui breeds the pollution such as some microorganisms, depositing colloidal impurity particle, oxide, organic matter and salt, forms fouling, is easy
Reverse osmosis membrane system is polluted, flux is caused to reduce, component inlet outlet pressure differential increases, to influence the warp of reverse osmosis unit
Ji property, seriously affects the normal operation of equipment.
In reverse osmosis membrane system operational process, the direction for keeping a part of water vertical with film passes through film, at this time salt and glue
Body substance is concentrated in film surface, and the concentrated water of the direction flowing parallel with film takes away condensed matter, operation a period of time, on film
Concentrated water side can accumulate the substances such as colloid, metal oxide, organic matter, bacterium, scale, cause the decline of system ellipticity, water yield
The problems such as reduction, pressure difference increase.Therefore periodic cleaning is needed, traditional chemical cleaning is that soda acid alternately cleans, to reverse osmosis membrane
Performance has a certain impact, and especially has a great impact to the breaking strength of film wire and elongation at break, contracts to a certain extent
The short service life of reverse osmosis membrane.In view of the above-mentioned problems, a kind of suitable cleaning agent is selected to improve reverse osmosis desalination rate, press
Power is poor, alleviates reverse osmosis operating pressure, improves membranous system operation conditions.
China Patent Publication No.: CN102008737B discloses a kind of online bactericidal method of reverse osmosis membrane；Step 1,
Determine the sterilization cycle of reverse osmosis membrane；Step 2, the progress first round kills after selecting a kind of non-oxidative bactericide to be configured to cleaning solution
Bacterium；Step 3, selection sterilizes different non-oxidative bactericides from the first round and is configured to carry out the second wheel sterilization after cleaning solution；Step
Rapid 4, repeat step 2,3.Method of the present invention explicitly gives the period of the regular impact sterilization of reverse osmosis membrane, energy
Microorganism is killed before a large amount of apposition growths in time on reverse osmosis membrane, improves germicidal efficiency and effect；
Step 1, the sterilization cycle of reverse osmosis membrane is determined: using the reverse osmosis concentrated water in Sewage Reuse System as culture water source
Bacterium is cultivated, Bacteria Culture temperature is 15~40 DEG C, or sets according to Sewage Reuse System actual motion temperature that incubation time is
2~15 days, total number of bacteria is measured using Standard Plate Count method, after obtaining growth curve of bacteria, with right in growth curve of bacteria
Sterilization cycle of the time as reverse osmosis membrane corresponding to the number rise period.
Step 2, first round sterilization is carried out after selecting a kind of non-oxidative bactericide to be configured to cleaning solution: being determined with step 1
Sterilization cycle, in counter-infiltration system reverse osmosis membrane carry out 1~10 sterilization operation, each sterilization operation include note
Enter, recycle, impregnating, recycling four steps, rinsing reverse osmosis membrane with reverse osmosis produced water after sterilization.
Step 3, selection is sterilized the second wheel of progress after different non-oxidative bactericides are configured to cleaning solution from the first round and is killed
Bacterium: the sterilization cycle determined with step 1 is carried out 1~10 sterilization operation to the reverse osmosis membrane in counter-infiltration system, sterilized every time
Operation includes injection, circulation, impregnates, four steps of recycling, rinses reverse osmosis membrane with reverse osmosis produced water after sterilization.
Step 4, step 2,3 are repeated,；It can be seen that the online bactericidal method of reverse osmosis membrane has the following problems:
Traditional chemical cleaning is that soda acid alternately cleans, and shortens the service life of reverse osmosis membrane to a certain extent.
Summary of the invention
For this purpose, the present invention provides a kind of cleaning agent and preparation method thereof for counter-infiltration system, to overcome existing skill
The problem of service life of reverse osmosis membrane is shortened in art.
To achieve the above object, the present invention provides a kind of cleaning agent for counter-infiltration system, which is characterized in that by weight
Percentage includes: poly-epoxy succinic acid 0.8%-1%, sodium nitrilo triacetate 3.8%-4.5%, chelating agent 23%-29%, table
Face activating agent 7%-15%, fungicide 15-30ppm, surplus are deionized water.
It further, by weight percentage include: poly-epoxy succinic acid 0%, sodium nitrilo triacetate 0%, chelating agent
0%, surfactant 0%, fungicide 0g, sodium hydroxide 0%, surplus are deionized water 0g.
Further, chelating agent is aminotriacetic acid.
Further, surfactant is ammonia neopelex.
Further, fungicide is isothiazolinone.
Further, sodium hydroxide 0.1%-0.3% is added in cleaning agent by weight percentage, by the pH value tune of cleaning agent
Section is 10-12.
Further, preparation method the following steps are included:
The first step, by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water in 40-
20-30min is stirred at 50 DEG C；
Fungicide is added in second step when the temperature of the first step is down to 25-30 DEG C, stir 10-15min, mixing speed
For 400-600rpm to get arrive reverse osmosis cleaning agent.
Compared with prior art, the beneficial effects of the present invention are aminotriacetic acid is to the corrosion-free work of reverse-osmosis membrane element
With, be formed by scaling fouling for oxide, organic deposition, have it is stronger removing and removal effect；Table in cleaning agent
Face activating agent can rapid osmotic, effectively remove dirt；Reverse osmosis cleaning agent cleaning effect of the invention is good, extends the service life of film.
Has many advantages, such as simple production process, easy to use, environmentally friendly.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is further retouched below with reference to embodiment
It states；It should be appreciated that specific embodiment described herein is used only for explaining the present invention, it is not intended to limit the present invention.
Embodiment 1
A kind of counter-infiltration system efficient cleaner, including following component in percentage by weight: including according to weight
The following component of percentages: poly-epoxy succinic acid 0.8%, sodium nitrilo triacetate 3.8%, chelating agent 23%, surface-active
Agent 7%, fungicide 0.0015g and sodium hydroxide 0.1%-0.3%, surplus add to 100g with deionized water.
Chelating agent is aminotriacetic acid, and surfactant is ammonia neopelex, and fungicide is isothiazolinone.
A kind of preparation method of reverse osmosis membrane efficient cleaner, which is characterized in that method and step is as follows:
S1: by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water in 40-50
20-30min is stirred at DEG C；
S2: being added fungicide when the temperature of S1 is down to 25-30 DEG C, stirs 10-15min；
S3: it is 10-12 that sodium hydroxide tune pH value is added under constant stirring.
Further, reverse osmosis efficient cleaner can be obtained after stirring evenly cooling in the S3, and mixing speed is
400-600rpm。
Further, counter-infiltration system efficient cleaner is added in cleaning water tank, opens cleaning pump circulation immersion and enters
Cleaning procedure in this over cleaning journey, keeps cleaning solution pH value in 10-12.
Embodiment 2
A kind of counter-infiltration system efficient cleaner, including following component in percentage by weight: including according to weight
The following component of percentages: poly-epoxy succinic acid 0.85%, sodium nitrilo triacetate 4.2%, chelating agent 24.5%, surface
Activating agent 13%, fungicide 0.0018g and sodium hydroxide 0.1%-0.3%, surplus add to 100g with deionized water.
Chelating agent is aminotriacetic acid, and surfactant is ammonia neopelex, and fungicide is isothiazolinone.
A kind of preparation method of reverse osmosis membrane efficient cleaner, which is characterized in that method and step is as follows:
S1: by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water in 40-50
20-30min is stirred at DEG C；
S2: being added fungicide when the temperature of S1 is down to 25-30 DEG C, stirs 10-15min；
S3: it is 10-12 that sodium hydroxide tune pH value is added under constant stirring.
Further, reverse osmosis efficient cleaner can be obtained after stirring evenly cooling in the S3, and mixing speed is
400-600rpm。
Further, counter-infiltration system efficient cleaner is added in cleaning water tank, opens cleaning pump circulation immersion and enters
Cleaning procedure in this over cleaning journey, keeps cleaning solution pH value in 10-12.
Embodiment 3
A kind of counter-infiltration system efficient cleaner, including following component in percentage by weight: including according to weight
The following component of percentages: poly-epoxy succinic acid 0.9%, sodium nitrilo triacetate 4.0%, chelating agent 29%, surface-active
Agent 15%, fungicide 0.0026g and sodium hydroxide 0.1%-0.3%, surplus add to 100g with deionized water.
Chelating agent is aminotriacetic acid, and surfactant is ammonia neopelex, and fungicide is isothiazolinone.
A kind of preparation method of reverse osmosis membrane efficient cleaner, which is characterized in that method and step is as follows:
S1: by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water in 40-50
20-30min is stirred at DEG C；
S2: being added fungicide when the temperature of S1 is down to 25-30 DEG C, stirs 10-15min；
S3: it is 10-12 that sodium hydroxide tune pH value is added under constant stirring.
Further, reverse osmosis efficient cleaner can be obtained after stirring evenly cooling in the S3, and mixing speed is
400-600rpm。
Further, counter-infiltration system efficient cleaner is added in cleaning water tank, opens cleaning pump circulation immersion and enters
Cleaning procedure in this over cleaning journey, keeps cleaning solution pH value in 10-12.
Embodiment 4
A kind of counter-infiltration system efficient cleaner, including following component in percentage by weight: including according to weight
The following component of percentages: poly-epoxy succinic acid 0.95%, sodium nitrilo triacetate 4.5%, chelating agent 26%, surface-active
Agent 11%, fungicide 0.0024g and sodium hydroxide 0.1%-0.3%, surplus add to 100g with deionized water.
Chelating agent is aminotriacetic acid, and surfactant is ammonia neopelex, and fungicide is isothiazolinone.
A kind of preparation method of reverse osmosis membrane efficient cleaner, which is characterized in that method and step is as follows:
S1: by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water in 40-50
20-30min is stirred at DEG C；
S2: being added fungicide when the temperature of S1 is down to 25-30 DEG C, stirs 10-15min；
S3: it is 10-12 that sodium hydroxide tune pH value is added under constant stirring.
Further, reverse osmosis efficient cleaner can be obtained after stirring evenly cooling in the S3, and mixing speed is
400-600rpm。
Further, counter-infiltration system efficient cleaner is added in cleaning water tank, opens cleaning pump circulation immersion and enters
Cleaning procedure in this over cleaning journey, keeps cleaning solution pH value in 10-12.
Embodiment 5
A kind of counter-infiltration system efficient cleaner, including following component in percentage by weight: including according to weight
The following component of percentages: poly-epoxy succinic acid 1.0%, sodium nitrilo triacetate 4.3%, chelating agent 27.5%, surface are living
Property agent 9%, fungicide 0.0030g and sodium hydroxide 0.1%-0.3%, surplus add to 100g with deionized water.
Chelating agent is aminotriacetic acid, and surfactant is ammonia neopelex, and fungicide is isothiazolinone.
A kind of preparation method of reverse osmosis membrane efficient cleaner, which is characterized in that method and step is as follows:
S1: by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water at 40-50 DEG C
Lower stirring 20-30min；
S2: being added fungicide when the temperature of S1 is down to 25-30 DEG C, stirs 10-15min；
S3: it is 10-12 that sodium hydroxide tune pH value is added under constant stirring.
Further, reverse osmosis efficient cleaner can be obtained after stirring evenly cooling in the S3, and mixing speed is
400-600rpm。
Further, counter-infiltration system efficient cleaner is added in cleaning water tank, opens cleaning pump circulation immersion and enters
Cleaning procedure in this over cleaning journey, keeps cleaning solution pH value in 10-12.
The cleaning effect evaluation table of 1 embodiment 1-5 of table
| Embodiment | Operating pressure (MPA) | Water power is produced to lead |
| Embodiment 1 | 0.89 | 8 |
| Embodiment 2 | 0.95 | 11 |
| Embodiment 3 | 0.99 | 10 |
| Embodiment 4 | 1.06 | 9 |
| Embodiment 5 | 1.0 | 9 |
So far, it has been combined preferred embodiment and describes technical solution of the present invention, still, those skilled in the art hold
Intelligible to be, protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from the principle of the present invention
Under the premise of, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these changes or replacement
Technical solution later will fall within the scope of protection of the present invention.
Claims (7)
1. a kind of cleaning agent for counter-infiltration system, which is characterized in that by weight percentage include: poly-epoxy succinic acid
0.8%-1%, sodium nitrilo triacetate 3.8%-4.5%, chelating agent 23%-29%, surfactant 7%-15%, fungicide
15-30ppm, surplus are deionized water.
2. being used for the cleaning agent of counter-infiltration system according to claim 1, which is characterized in that by weight percentage include: poly-
Epoxysuccinic acid 0.9%, sodium nitrilo triacetate 4.0%, chelating agent 29%, surfactant 15%, fungicide 0.0026g,
Sodium hydroxide 0.2%, surplus are deionized water 100g.
3. being used for the cleaning agent of counter-infiltration system according to claim 1, which is characterized in that the chelating agent is three second of amino
Acid.
4. being used for the cleaning agent of counter-infiltration system according to claim 1, which is characterized in that the surfactant is ammonia ten
Dialkyl benzene sulfonic acids sodium.
5. being used for the cleaning agent of counter-infiltration system according to claim 1, which is characterized in that the fungicide is isothiazoline
Ketone.
6. being used for the cleaning agent of counter-infiltration system according to claim 1, which is characterized in that cleaning agent percentage by weight
Than sodium hydroxide 0.1%-0.3% is added, the pH value of the cleaning agent is adjusted to 10-12.
7. a kind of preparation method for counter-infiltration system cleaning agent, which is characterized in that the preparation method comprises the following steps:
The first step, by poly-epoxy succinic acid, sodium nitrilo triacetate, chelating agent, surfactant and deionized water at 40-50 DEG C
Lower stirring 20-30min；
Fungicide is added in second step when the temperature of the first step is down to 25-30 DEG C, stir 10-15min, mixing speed
For 400-600rpm to get arrive reverse osmosis cleaning agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512295.5A CN110141971A (en) | 2018-12-11 | 2018-12-11 | Cleaning agent and preparation method thereof for counter-infiltration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512295.5A CN110141971A (en) | 2018-12-11 | 2018-12-11 | Cleaning agent and preparation method thereof for counter-infiltration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110141971A true CN110141971A (en) | 2019-08-20 |
Family
ID=67589314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811512295.5A Pending CN110141971A (en) | 2018-12-11 | 2018-12-11 | Cleaning agent and preparation method thereof for counter-infiltration system |
Country Status (1)
| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001232159A (en) * | 2000-02-24 | 2001-08-28 | Nitto Denko Corp | Method for recovering performance of separation membrane of membrane system for reusing linen wastewater. |
| CN102285705A (en) * | 2010-06-21 | 2011-12-21 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN105709605A (en) * | 2015-08-13 | 2016-06-29 | 常州联江环保科技有限公司 | Alkaline cleaning agent and bactericide applicable to ultra-filtration membranes or reverse osmosis membranes |
| CN107149877A (en) * | 2016-03-02 | 2017-09-12 | 上海丰信环保科技有限公司 | Treated sewage reusing film alkaline cleaner |
-
2018
- 2018-12-11 CN CN201811512295.5A patent/CN110141971A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001232159A (en) * | 2000-02-24 | 2001-08-28 | Nitto Denko Corp | Method for recovering performance of separation membrane of membrane system for reusing linen wastewater. |
| CN102285705A (en) * | 2010-06-21 | 2011-12-21 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN105709605A (en) * | 2015-08-13 | 2016-06-29 | 常州联江环保科技有限公司 | Alkaline cleaning agent and bactericide applicable to ultra-filtration membranes or reverse osmosis membranes |
| CN107149877A (en) * | 2016-03-02 | 2017-09-12 | 上海丰信环保科技有限公司 | Treated sewage reusing film alkaline cleaner |
Non-Patent Citations (2)
| Title |
|---|
| 丁启圣等编著: "《新型实用过滤技术 第4版》", 31 December 2017, 冶金工业出版社 * |
| 郑书忠主编: "《水处理药剂及其应用》", 31 May 2003, 中国石化出版社 * |
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Application publication date: 20190820 |