CN107308821A - A kind of cleaning method of milipore filter - Google Patents
A kind of cleaning method of milipore filter Download PDFInfo
- Publication number
- CN107308821A CN107308821A CN201710523655.0A CN201710523655A CN107308821A CN 107308821 A CN107308821 A CN 107308821A CN 201710523655 A CN201710523655 A CN 201710523655A CN 107308821 A CN107308821 A CN 107308821A
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- Prior art keywords
- milipore filter
- washing
- cleaning method
- acid
- milipore
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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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of cleaning method of milipore filter, it is characterised in that the cleaning method comprises the following steps：At 70 DEG C, milipore filter is immersed in the acid solution, concussion washing is carried out using ultrasonic transmitter, after immersion 8 hours, addition silica, which is helped, in the acid solution washes block, stirring and washing 15min hours, then to milipore filter is using the acid solution just flushing and backwashes respectively once, after the completion of cleaning, the milipore filter is rinsed into 20min using clear water；Milipore filter is immersed in the alkaline solution again, using ultrasonic transmitter progress concussion washing, addition cobblestone, which is helped, in the aqueous slkali washes block, stirring and washing 15min, then to milipore filter is using alkaline solution just flushing and backwashes respectively once；Milipore filter through base extraction is immersed in clear water, concussion washing 1 hour is carried out using ultrasonic transmitter, and cleaning program of the present invention can effective getting effective washing to inorganic pollution that absorption is deposited in hyperfiltration membrane assembly and organic pollution.
Description
Technical field
The present invention relates to a kind of chemical cleaning method of milipore filter, and in particular to a kind of cleaning method of milipore filter.
Background technology
Because fouling membrane can occur along with ultra-filtration process always, proceed to certain time when returning ultrafiltration, membrane flux will
It is decreased obviously, in order that ultra-filtration process can be normally carried out, it is necessary to clean the milipore filter polluted in time, remove depollution, it is extensive
The performance of laminating adhesive,
At present, the cleaning method of milipore filter mainly has physical cleaning and the major class of Chemical cleaning two, during using Chemical cleaning, according to dirt
Contaminate the property of the property and film of thing in itself to select, suitably clean formula of liquid and cleaning method, traditional cleaning method is general
Including two methods of positive cleaning and anti-cleaning, but for some obstinate impurity, often can not thoroughly it wash, accordingly, it would be desirable to
Develop a kind of novel washing mode.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of polymer ultrafiltration membrane, during separating and filtering
Liquid flow resistance in this polymer ultrafiltration membrane micropore is small, and the pressure loss is small, and membrane flux is big, and it is sticky that the milipore filter is adapted to processing
Liquid.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
S1, configuration acid solution, the part of the acid solution include hydrochloric acid, citric acid, sodium hydrogensulfite；
S2, configuration alkaline solution, the part of the alkaline solution include sodium hypochlorite, potassium permanganate, and are washed with alkali regulation
The pH value of liquid is alkalescence；
S3,70 DEG C when, milipore filter is immersed in the acid solution, utilize ultrasonic transmitter carry out concussion washing 30-
45min, after soaking 8 hours, addition silica, which is helped, in the acid solution washes block, using rubber stirring rod stirring and washing
15min hours, then it is each once using the acid solution just flushing and backwash to milipore filter, each washing time is 30min,
After the completion of cleaning, the milipore filter is rinsed into 20min using clear water, described help washes block for regular octahedron shape, and size is 2-3cm；
Under S4, normal temperature, it will be immersed in the alkaline solution, shaken using ultrasonic transmitter through the S3 milipore filters handled
30-45min is washed, after soaking 10 hours, addition cobblestone, which is helped, in the aqueous slkali washes block, stirs clear using rubber stirring rod
15min is washed, then it is each once using the alkaline solution just flushing and backwash to milipore filter, each washing time is 30min institutes
State to help and wash block size for 2-3cm；
Under S5, normal temperature, it will be immersed in through the S4 milipore filters handled in clear water, it is small to carry out concussion washing 1 using ultrasonic transmitter
When, taking-up is dried.
As a preference of the present invention, hollow-fibre membrane during the milipore filter, its material is polyvinyl chloride, polyacrylonitrile or poly-
Vinylidene.
As a preference of the present invention,
In step S1, the concentration of the hydrochloric acid, citric acid, sodium hydrogensulfite in an acidic solution is 0.5-1.0wt%, hydrochloric acid, lemon
Lemon acid, the weight ratio of sodium hydrogensulfite are 1:3:5；
In step S2, the concentration of the alkali lye hypochlorous acid and potassium permanganate is 100-200ppm, and the PH of washing lotion is 11-12.
As a preference of the present invention, in step S2, the alkali of regulation alkali lye pH value is sodium hydroxide.
As a preference of the present invention, the positive flushing and backwash flux are 200-300l/ ㎡ h.
As a preference of the present invention, the supersonic generator parameter is 20-15KHZ, power 2000-3200W.
Beneficial effect：Cleaning program of the present invention can effectively to depositing absorption in hyperfiltration membrane assembly inorganic pollution
Thing and organic pollution get effective washing, the water that the operating flux and operating pressure of milipore filter can be returned to before pollution
It is flat, it is ensured that stable progress during wastewater treatment.
Embodiment
Make specific introduce to the present invention below in conjunction with specific embodiment.
Embodiment 1
A kind of cleaning method of milipore filter, its cleaning method comprises the following steps：
S1, configuration acid solution, the part of the acid solution include hydrochloric acid, citric acid, sodium hydrogensulfite, and weight ratio is
1:3:5, the concentration of hydrochloric acid, citric acid, sodium hydrogensulfite in an acidic solution is 0.5wt%；
S2, configuration alkaline solution, the part of the alkaline solution includes sodium hypochlorite, potassium permanganate, and uses sodium hydroxide
It is alkalescence to adjust the pH value of washing lotion, and the concentration of the alkali lye hypochlorous acid and potassium permanganate is 100ppm, and the PH of washing lotion is 11；
S3,70 DEG C when, the Pvc Ultrafiltration Membrane in hollow form is immersed in the acid solution, using parameter be 15KHZ,
Power 2000W ultrasonic transmitter carries out concussion washing 45min, and after soaking 8 hours, positive eight are added in the acid solution
The face bodily form, size helps for 2-3cm silica and washes block, using rubber stirring rod stirring and washing 15min hours, then to milipore filter
It is that 200l/ ㎡ h are just being rinsed and backwashed respectively once using the acid solution flux, each washing time is 30min, clearly
After the completion of washing, the milipore filter is rinsed into 20min using clear water；
It under S4, normal temperature, will be immersed in the alkaline solution, carried out using above-mentioned ultrasonic transmitter through the S3 milipore filters handled
Concussion washing 30-45min, after soaking 10 hours, addition size helps for 2cm cobblestone and washes block in the aqueous slkali, uses
Rubber stirring rod stirring and washing 15min, then to milipore filter using the alkaline solution flux be 200-l/ ㎡ h carry out it is positive rinse and
Backwash is each once, and each washing time is 30min；
Under S4, normal temperature, it will be immersed in through the S4 milipore filters handled in clear water, it is small to carry out concussion washing 1 using ultrasonic transmitter
When, taking-up is dried.
Embodiment 2
A kind of cleaning method of milipore filter, its cleaning method comprises the following steps：
S1, configuration acid solution, the part of the acid solution include hydrochloric acid, citric acid, sodium hydrogensulfite, and weight ratio is
1:3:5, the concentration of hydrochloric acid, citric acid, sodium hydrogensulfite in an acidic solution is 0.8wt%；
S2, configuration alkaline solution, the part of the alkaline solution includes sodium hypochlorite, potassium permanganate, and uses sodium hydroxide
It is alkalescence to adjust the pH value of washing lotion, and the concentration of the alkali lye hypochlorous acid and potassium permanganate is 150ppm, and the PH of washing lotion is 11；
S3,70 DEG C when, the polyvinylidene fluoride (PVDF) ultrafiltration membrane in hollow form is immersed in the acid solution, is using parameter
18KHZ, power 2600W ultrasonic transmitter carry out concussion washing 35min, after soaking 8 hours, add in the acid solution
Enter regular octahedron shape, size helps for 2.5cm silica and washes block, using rubber stirring rod stirring and washing 15min hours, then it is right
Milipore filter is that 250l/ ㎡ h are just being rinsed and backwashed respectively once using the acid solution flux, and each washing time is
30min, after the completion of cleaning, 20min is rinsed by the milipore filter using clear water；
It under S4, normal temperature, will be immersed in the alkaline solution, carried out using above-mentioned ultrasonic transmitter through the S3 milipore filters handled
Concussion washing 40min, after soaking 10 hours, addition size helps for 2.5cm cobblestone and washes block in the aqueous slkali, using rubber
Glue puddler stirring and washing 15min, then using the alkaline solution flux be that 250l/ ㎡ h carry out positive rinse and anti-to milipore filter
Flushing is each once, and each washing time is 30min；
Under S5, normal temperature, it will be immersed in through the S4 milipore filters handled in clear water, it is small to carry out concussion washing 1 using ultrasonic transmitter
When, taking-up is dried.
Embodiment 3
A kind of cleaning method of milipore filter, its cleaning method comprises the following steps：
S1, configuration acid solution, the part of the acid solution include hydrochloric acid, citric acid, sodium hydrogensulfite, and weight ratio is
1:3:5, the concentration of hydrochloric acid, citric acid, sodium hydrogensulfite in an acidic solution is 1.0wt%；
S2, configuration alkaline solution, the part of the alkaline solution includes sodium hypochlorite, potassium permanganate, and uses sodium hydroxide
It is alkalescence to adjust the pH value of washing lotion, and the concentration of the alkali lye hypochlorous acid and potassium permanganate is 200ppm, and the PH of washing lotion is 12；
S3,70 DEG C when, will be immersed in the fine milipore filter of the polypropylene of hollow form in the acid solution, using parameter be 20KHZ,
Power 3200W ultrasonic transmitter carries out concussion washing 30min, and after soaking 8 hours, positive eight are added in the acid solution
The face bodily form, size helped for 3cm round ceramic and washes block, using rubber stirring rod stirring and washing 15min hour, then sharp to milipore filter
It is that 300l/ ㎡ h are just being rinsed and backwashed respectively once with the acid solution flux, each washing time is 30min, cleaning
After the completion of, the milipore filter is rinsed into 20min using clear water；
It under S4, normal temperature, will be immersed in the alkaline solution, carried out using above-mentioned ultrasonic transmitter through the S3 milipore filters handled
Concussion washing 30min, after soaking 10 hours, addition size helps for 3cm cobblestone and washes block in the aqueous slkali, using rubber
Stirring rod stirring and washing 15min, then milipore filter is just being rinsed and recoiled for 300l/ ㎡ h using the alkaline solution flux
Wash it is each once, each washing time is 30min；
Under S5, normal temperature, it will be immersed in through the S4 milipore filters handled in clear water, it is small to carry out concussion washing 1 using ultrasonic transmitter
When, taking-up is dried.
The basic principles, principal features and advantages of the present invention have been shown and described above.It should be understood by those skilled in the art that,
The invention is not limited in any way for above-described embodiment, all technical sides obtained by the way of equivalent substitution or equivalent transformation
Case, all falls within protection scope of the present invention.
Claims (6)
1. a kind of cleaning method of milipore filter, it is characterised in that the cleaning method comprises the following steps：
S1, configuration acid solution, the part of the acid solution include hydrochloric acid, citric acid, sodium hydrogensulfite；
S2, configuration alkaline solution, the part of the alkaline solution include sodium hypochlorite, potassium permanganate, and are washed with alkali regulation
The pH value of liquid is alkalescence；
S3,70 DEG C when, milipore filter is immersed in the acid solution, utilize ultrasonic transmitter carry out concussion washing 30-
45min, after soaking 8 hours, addition silica, which is helped, in the acid solution washes block, using rubber stirring rod stirring and washing
15min hours, then it is each once using the acid solution just flushing and backwash to milipore filter, each washing time is 30min,
After the completion of cleaning, the milipore filter is rinsed into 20min using clear water, described help washes block for regular octahedron shape, and size is 2-3cm；
Under S4, normal temperature, it will be immersed in the alkaline solution, shaken using ultrasonic transmitter through the S3 milipore filters handled
30-45min is washed, after soaking 10 hours, addition cobblestone, which is helped, in the aqueous slkali washes block, stirs clear using rubber stirring rod
15min is washed, then it is each once using the alkaline solution just flushing and backwash to milipore filter, each washing time is 30min institutes
State to help and wash block size for 2-3cm；
Under S5, normal temperature, it will be immersed in through the S4 milipore filters handled in clear water, it is small to carry out concussion washing 1 using ultrasonic transmitter
When, taking-up is dried.
2. a kind of cleaning method of milipore filter as claimed in claim 1, it is characterised in that the doughnut during milipore filter
Film, its material is polyvinyl chloride, polyacrylonitrile or Kynoar.
3. a kind of cleaning method of milipore filter as claimed in claim 1, it is characterised in that
In step S1, the concentration of the hydrochloric acid, citric acid, sodium hydrogensulfite in an acidic solution is 0.5-1.0wt%, hydrochloric acid, lemon
Lemon acid, the weight ratio of sodium hydrogensulfite are 1:3:5；
In step S2, the concentration of the alkali lye hypochlorous acid and potassium permanganate is 100-200ppm, and the PH of washing lotion is 11-12.
4. a kind of cleaning method of milipore filter as claimed in claim 1, it is characterised in that in step S2, adjusts alkali lye pH value
Alkali be sodium hydroxide.
5. a kind of cleaning method of milipore filter as claimed in claim 1, it is characterised in that the positive flushing and backwash flux
For 200-300l/ ㎡ h.
6. a kind of cleaning method of milipore filter as claimed in claim 1, it is characterised in that the supersonic generator parameter is
20-15KHZ, power 2000-3200W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523655.0A CN107308821A (en) | 2017-06-30 | 2017-06-30 | A kind of cleaning method of milipore filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523655.0A CN107308821A (en) | 2017-06-30 | 2017-06-30 | A kind of cleaning method of milipore filter |
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| Publication Number | Publication Date |
|---|---|
| CN107308821A true CN107308821A (en) | 2017-11-03 |
Family
ID=60179930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710523655.0A Pending CN107308821A (en) | 2017-06-30 | 2017-06-30 | A kind of cleaning method of milipore filter |
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| CN (1) | CN107308821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159885A (en) * | 2018-02-23 | 2018-06-15 | 珠海市城市排水有限公司 | A kind of PVDF ultrafiltration membrane inorganic pollution cleaning agent and cleaning method |
| CN111039355A (en) * | 2018-10-12 | 2020-04-21 | 中国石化扬子石油化工有限公司 | Chemical cleaning method for ultrafiltration membrane pollution |
-
2017
- 2017-06-30 CN CN201710523655.0A patent/CN107308821A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159885A (en) * | 2018-02-23 | 2018-06-15 | 珠海市城市排水有限公司 | A kind of PVDF ultrafiltration membrane inorganic pollution cleaning agent and cleaning method |
| CN108159885B (en) * | 2018-02-23 | 2020-10-30 | 珠海市城市排水有限公司 | PVDF ultrafiltration membrane inorganic pollution cleaning agent and cleaning method |
| CN111039355A (en) * | 2018-10-12 | 2020-04-21 | 中国石化扬子石油化工有限公司 | Chemical cleaning method for ultrafiltration membrane pollution |
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Application publication date: 20171103 |