CN109453671A - It is a kind of to slow down the stifled process of reverse osmosis membrane dirt - Google Patents
It is a kind of to slow down the stifled process of reverse osmosis membrane dirt Download PDFInfo
- Publication number
- CN109453671A CN109453671A CN201811423611.1A CN201811423611A CN109453671A CN 109453671 A CN109453671 A CN 109453671A CN 201811423611 A CN201811423611 A CN 201811423611A CN 109453671 A CN109453671 A CN 109453671A
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- cleaning
- osmosis membrane
- dirt
- cartridge filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- 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
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
Abstract
Slow down the stifled process of reverse osmosis membrane dirt the invention discloses a kind of, before the reverse osmosis host water inlet of cartridge filter, chemical cleaning is carried out to cartridge filter reverse osmosis membrane and water rinses, comprising the following steps: (1) clean, the reverse osmosis product water without free chlorine is squeezed into pressure vessel with pump and discharges a few minutes；(2) cleaning solution is prepared in cleaning case with clean product water；(3) cleaning solution is recycled 1 hour in pressure vessel；(4) it empties cleaning case and is rinsed；(5) step (1) operation is repeated；(6) the reverse osmosis host of cartridge filter is run under product water discharging valve opening state.The present invention is before the water inlet of reverse osmosis host, and using the effective treatment process of synthesis, emphasis improves the removal rate of hardness, basicity;Carbonate scale pollution and microbial contamination are reduced, reverse osmosis membrane dirt is reduced and blocks up, propose the high yield water rate of recovery;And whole set equipment is compact-sized, easy to operate, operating cost economy.
Description
Technical field
It is specifically a kind of to slow down the stifled process of reverse osmosis membrane dirt the present invention relates to reverse osmosis membrane group cleaning method.
Background technique
Hyperfiltration is a kind of membrane separation technique, it has also become a kind of chemical engineering unit operation of maturation.Reverse osmosis technology due to
Low energy consumption for separation process, without phase-change, without other chemicals, without secondary environmental pollution, equipment is simple, operating cost is low and dimension
It repairs conveniently, therefore, it is widely used for people.Currently, anti-penetration wastewater disposal has been widely used for various industries, can both mention
For industrial waters such as chemical industry, medicine, electronics, light industry and food, and brackish water desalination can be used for and produce domestic water.
Its surface will appear dirt when reverse osmosis membrane is used for a long time, it is therefore desirable to carry out to the dirt on reverse osmosis membrane
It is stifled to place reverse osmosis membrane dirt for cleaning.
Summary of the invention
Slow down the stifled process of reverse osmosis membrane dirt the purpose of the present invention is to provide a kind of, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
It is a kind of to slow down the stifled process of reverse osmosis membrane dirt, before the reverse osmosis host water inlet of cartridge filter, to cartridge filter
Reverse osmosis membrane carries out chemical cleaning and water and rinses, and when cleaning recycles cleaning solution with low pressure and mass flow in the high-pressure side of film, protects
Pacify filter reverse-osmosis membrane element cleaning the following steps are included:
(1) clean, the reverse osmosis product water without free chlorine is squeezed into pressure vessel side by side from cleaning case or corresponding water source with pump
Put a few minutes；
(2) cleaning solution is prepared in cleaning case with clean product water；
(3) cleaning solution is recycled to 1 hour or preset time in pressure vessel；
(4) it after cleaning is completed, empties cleaning case and is rinsed, clean product water is then full of into cleaning case in case of under
One step is rinsed；
(5) step (1) operation is repeated, the clean, product water without free chlorine is squeezed into pressure from cleaning case or corresponding water source with pump
In container and discharge a few minutes；
(6) after rinsing cartridge filter reverse osmosis membrane, it is reverse osmosis that cartridge filter is run under product water discharging valve opening state
Host, until product water cleaning, non-foam or without cleaning agent.
As a further solution of the present invention: the scavenging period of the cartridge filter reverse osmosis membrane is 15-30 minutes.
As a further solution of the present invention: in step (3), when for 8 inches or 8.5 inches of pressure vessels, flow velocity
It is 35-40 gallon per minute, i.e., 133-151 liters/min, when for 6 inches of pressure vessels, flow velocity is 15-20 gallon per minute, i.e.,
57-76 liters/min, when for 4 inches of pressure vessels, flow velocity is 9-10 gallon per minute, i.e., 34-38 liters/min.
As a further solution of the present invention: the dirt on the cartridge filter reverse-osmosis membrane element includes calcium carbonate
Dirt, calcium sulfate scale, metal oxide dirt, silicon dirt and organic sediment.
As the present invention further scheme: maximum temperature is 40 DEG C when cleaning, required articles in every 100 gallons plus
Enter meter, solution is prepared using the reverse osmosis product water without free chlorine when preparing cleaning solution and is uniformly mixed.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is before the water inlet of reverse osmosis host, and using the effective treatment process of synthesis, emphasis improves the removal of hardness, basicity
Rate;Carbonate scale pollution and microbial contamination are reduced, reverse osmosis membrane dirt is reduced and blocks up, propose the high yield water rate of recovery;And whole set equipment knot
Structure is compact, easy to operate, operating cost economy.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
It is a kind of to slow down the stifled process of reverse osmosis membrane dirt, before the reverse osmosis host water inlet of cartridge filter, to cartridge filter
Reverse osmosis membrane carries out chemical cleaning and water and rinses, and when cleaning recycles cleaning solution with low pressure and mass flow in the high-pressure side of film, institute
Stating the dirt on cartridge filter reverse-osmosis membrane element includes calcium carbonate scale, calcium sulfate scale, metal oxide dirt, silicon dirt and organic
Deposit, the scavenging period of the cartridge filter reverse osmosis membrane are 15 minutes, the cleaning of cartridge filter reverse-osmosis membrane element
Hold the following steps are included: clean, the reverse osmosis product water without free chlorine is squeezed into pressure from cleaning case or corresponding water source with pump by (1)
In device and discharge a few minutes；(2) cleaning solution is prepared in cleaning case with clean product water；(3) by cleaning solution in pressure vessel
1 hour or the preset time of middle circulation, when for 8 inches or 8.5 inches of pressure vessels, flow velocity is 35 gallon per minute,
I.e. 133 liters/min, when for 6 inches of pressure vessels, flow velocity be 15 gallon per minute, i.e., 57 liters/min, for 4 inches of pressure
When container, flow velocity is 9 gallon per minute, i.e., 34 liters/min；(4) it after cleaning is completed, empties cleaning case and is rinsed, then
Into cleaning case full of clean product water in case rinsing in next step；(5) repetition step (1) operation, with pump by clean, nothing is free
The product water of chlorine is squeezed into pressure vessel from cleaning case or corresponding water source and discharges a few minutes；(6) cartridge filter reverse osmosis is rinsed
After permeable membrane, the reverse osmosis host of cartridge filter is run under product water discharging valve opening state, until product water cleaning, non-foam
Or without cleaning agent；Maximum temperature is 40 DEG C when cleaning, and required articles are adopted when preparing cleaning solution so that meter is added in every 100 gallons
Solution is prepared with the reverse osmosis product water without free chlorine and is uniformly mixed.
Embodiment 3
It is a kind of to slow down the stifled process of reverse osmosis membrane dirt, before the reverse osmosis host water inlet of cartridge filter, to cartridge filter
Reverse osmosis membrane carries out chemical cleaning and water and rinses, and when cleaning recycles cleaning solution with low pressure and mass flow in the high-pressure side of film, institute
Stating the dirt on cartridge filter reverse-osmosis membrane element includes calcium carbonate scale, calcium sulfate scale, metal oxide dirt, silicon dirt and organic
Deposit, the scavenging period of the cartridge filter reverse osmosis membrane are 20 minutes, the cleaning of cartridge filter reverse-osmosis membrane element
Hold the following steps are included: clean, the reverse osmosis product water without free chlorine is squeezed into pressure from cleaning case or corresponding water source with pump by (1)
In device and discharge a few minutes；(2) cleaning solution is prepared in cleaning case with clean product water；(3) by cleaning solution in pressure vessel
1 hour or the preset time of middle circulation, when for 8 inches or 8.5 inches of pressure vessels, flow velocity is 32 gallon per minute,
I.e. 140 liters/min, when for 6 inches of pressure vessels, flow velocity be 18 gallon per minute, i.e., 67 liters/min, for 4 inches of pressure
When container, flow velocity is 9 gallon per minute, i.e., 34 liters/min；(4) it after cleaning is completed, empties cleaning case and is rinsed, then
Into cleaning case full of clean product water in case rinsing in next step；(5) repetition step (1) operation, with pump by clean, nothing is free
The product water of chlorine is squeezed into pressure vessel from cleaning case or corresponding water source and discharges a few minutes；(6) cartridge filter reverse osmosis is rinsed
After permeable membrane, the reverse osmosis host of cartridge filter is run under product water discharging valve opening state, until product water cleaning, non-foam
Or without cleaning agent；Maximum temperature is 40 DEG C when cleaning, and required articles are adopted when preparing cleaning solution so that meter is added in every 100 gallons
Solution is prepared with the reverse osmosis product water without free chlorine and is uniformly mixed.
Embodiment 3
It is a kind of to slow down the stifled process of reverse osmosis membrane dirt, before the reverse osmosis host water inlet of cartridge filter, to cartridge filter
Reverse osmosis membrane carries out chemical cleaning and water and rinses, and when cleaning recycles cleaning solution with low pressure and mass flow in the high-pressure side of film, institute
Stating the dirt on cartridge filter reverse-osmosis membrane element includes calcium carbonate scale, calcium sulfate scale, metal oxide dirt, silicon dirt and organic
Deposit, the scavenging period of the cartridge filter reverse osmosis membrane are 30 minutes, the cleaning of cartridge filter reverse-osmosis membrane element
Hold the following steps are included: clean, the reverse osmosis product water without free chlorine is squeezed into pressure from cleaning case or corresponding water source with pump by (1)
In device and discharge a few minutes；(2) cleaning solution is prepared in cleaning case with clean product water；(3) by cleaning solution in pressure vessel
1 hour or the preset time of middle circulation, when for 8 inches or 8.5 inches of pressure vessels, flow velocity is 40 gallon per minute,
I.e. 151 liters/min, when for 6 inches of pressure vessels, flow velocity be 20 gallon per minute, i.e., 76 liters/min, for 4 inches of pressure
When container, flow velocity is 10 gallon per minute, i.e., 38 liters/min；(4) it after cleaning is completed, empties cleaning case and is rinsed, so
Full of clean product water in case rinsing in next step in backward cleaning case；(5) repeat step (1) operation, with pump will it is clean, without trip
It is squeezed into pressure vessel from the product water of chlorine from cleaning case or corresponding water source and discharges a few minutes；(6) it is anti-to rinse cartridge filter
After permeable membrane, under product water discharging valve opening state run the reverse osmosis host of cartridge filter, until product water cleaning, it is still
Foam or without cleaning agent；Maximum temperature is 40 DEG C when cleaning, and required articles are meter to be added in every 100 gallons, when preparing cleaning solution
Solution is prepared using the reverse osmosis product water without free chlorine and is uniformly mixed.
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (5)
1. a kind of slow down the stifled process of reverse osmosis membrane dirt, before the reverse osmosis host water inlet of cartridge filter, security personnel are filtered
Device reverse osmosis membrane carries out chemical cleaning and water and rinses, and when cleaning recycles cleaning solution with low pressure and mass flow in the high-pressure side of film,
It is characterized in that, the cleaning of cartridge filter reverse-osmosis membrane element the following steps are included:
Clean, the reverse osmosis product water without free chlorine is squeezed into pressure vessel and discharged several from cleaning case or corresponding water source with pump
Minute；
Cleaning solution is prepared in cleaning case with clean product water；
Cleaning solution is recycled to 1 hour or preset time in pressure vessel；
It after cleaning is completed, empties cleaning case and is rinsed, be then full of clean product water into cleaning case in case next
Step is rinsed；
Step (1) operation is repeated, the clean, product water without free chlorine is squeezed into pressure vessel from cleaning case or corresponding water source with pump
In and discharge a few minutes；
After rinsing cartridge filter reverse osmosis membrane, the reverse osmosis master of cartridge filter is run under product water discharging valve opening state
Machine, until product water cleaning, non-foam or without cleaning agent.
2. according to claim 1 slow down the stifled process of reverse osmosis membrane dirt, which is characterized in that the cartridge filter
The scavenging period of reverse osmosis membrane is 15-30 minutes.
3. according to claim 1 slow down the stifled process of reverse osmosis membrane dirt, which is characterized in that in step (3), for
8 inches or when 8.5 inches of pressure vessels, flow velocity is 35-40 gallon per minute, i.e., 133-151 liters/min, for 6 inches of pressure
When container, flow velocity is 15-20 gallon per minute, i.e., 57-76 liters/min, when for 4 inches of pressure vessels, flow velocity adds for 9-10
Logical sequence/minute, i.e., 34-38 liters/min.
4. according to claim 1 slow down the stifled process of reverse osmosis membrane dirt, which is characterized in that the cartridge filter
Dirt on reverse-osmosis membrane element includes calcium carbonate scale, calcium sulfate scale, metal oxide dirt, silicon dirt and organic sediment.
5. according to claim 1 slow down the stifled process of reverse osmosis membrane dirt, which is characterized in that maximum temperature when cleaning
It is 40 DEG C, required articles are meter to be added in every 100 gallons, using the reverse osmosis product water for being free of free chlorine when preparing cleaning solution
It prepares solution and is uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423611.1A CN109453671A (en) | 2018-11-27 | 2018-11-27 | It is a kind of to slow down the stifled process of reverse osmosis membrane dirt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423611.1A CN109453671A (en) | 2018-11-27 | 2018-11-27 | It is a kind of to slow down the stifled process of reverse osmosis membrane dirt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109453671A true CN109453671A (en) | 2019-03-12 |
Family
ID=65611713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811423611.1A Withdrawn CN109453671A (en) | 2018-11-27 | 2018-11-27 | It is a kind of to slow down the stifled process of reverse osmosis membrane dirt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109453671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657340A (en) * | 2020-12-11 | 2021-04-16 | 山东誉盛化工有限公司 | Cleaning method of reverse osmosis membrane |
-
2018
- 2018-11-27 CN CN201811423611.1A patent/CN109453671A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657340A (en) * | 2020-12-11 | 2021-04-16 | 山东誉盛化工有限公司 | Cleaning method of reverse osmosis membrane |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20190312 |