CN103537193A - Method for washing ultra-filtration membrane component - Google Patents
Method for washing ultra-filtration membrane component Download PDFInfo
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- CN103537193A CN103537193A CN201310539024.XA CN201310539024A CN103537193A CN 103537193 A CN103537193 A CN 103537193A CN 201310539024 A CN201310539024 A CN 201310539024A CN 103537193 A CN103537193 A CN 103537193A
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- acid solution
- washing
- clean
- filtration membrane
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Abstract
The invention discloses a method for washing an ultra-filtration membrane component. The method for washing a filter cartridge of the ultra-filtration membrane component comprises the following steps: washing by using an acid solution; washing by using an alkaline solvent and removing residue of the acid solution; sterilizing and washing by using a sterilizing agent. The method is simple and practicable; through the method, the productivity is ensured; meanwhile, the service life of the device is prolonged, and the requirement of water quality is ensured.
Description
Technical field
The present invention cleans relevant for water filtration device, a kind of method that particularly hyperfiltration membrane assembly cleans.
Background technology
Treasure each and drip, recycle each and drip and become the common recognition of the whole society.In the face of the water being on the rise pollutes, for the feature of urban water, should set up the recycling system of water, with the object that reaches the comprehensive regulation, recycles.
But can often occur contamination phenomenon in water filtration cleaning system, a primary class is the impurity of filtered residue, and a class is the pollution of microorganism in water, also having a class is in water body, purify medicament to equipment and cross the pollution that filter core causes.These pollute the usefulness decline that long-term accumulation not only makes filter core, also make the quality of water body be difficult to realize simultaneously.
Common quartz sand filtration is to remove in water one of effective means of suspension, is advanced treatment of wastewater, reusing sewage and to important unit in water treatment.Its effect is that the pollutant having flocculated in water is further removed, and it reaches the object of water purification by the holding back of filtrate, sedimentation and suction-operated.
But the filtering accuracy of this kind of material is low, and filtration time is long, introduce again the harm of impurity and derivative microorganism simultaneously.Conventionally can not clean, be disposable filtering material, need to often change.
Comparatively high-precision ultrafiltration membrane technique at present, its filtering technique is for can hold back macromolecular substances and the protein between 0.002-0.1 micron.Milipore filter allows small-molecule substance and soluble solid (inorganic salts) etc. to pass through, and will hold back lower colloid, protein, microorganism and larger molecular organics simultaneously, for the molecular weight cut off scope that represents milipore filter pore size generally between 1000-500000.The general 1-7bar of operating pressure of milipore filter.But because its filtering accuracy is high, its probability contaminated and infringement is larger, and the equipment loss causing will be also irreversible.
A kind of method that provides hyperfiltration membrane assembly to clean is provided for this reason.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of method that hyperfiltration membrane assembly cleans, wherein the filter core in described hyperfiltration membrane assembly is carried out to following cleaning:
1) adopt acid solution to clean;
2) adopt basic solvent to clean, residual to remove described acid solution;
3) adopt bactericide to carry out sterilization cleaning.
Method provided by the present invention guaranteeing, under the prerequisite of normal operation efficiency, can to remove timely impurity, the particularly impurity such as metal, inorganic salts and suspension after filter property, provides the removal to impurity such as microbial bacterials simultaneously, guarantees the standard of water quality.
The specific embodiment
The invention provides a kind of method that hyperfiltration membrane assembly cleans, wherein the filter core in described hyperfiltration membrane assembly carried out to following cleaning:
1) adopt acid solution to clean;
2) adopt basic solvent to clean, residual to remove described acid solution;
3) adopt bactericide to carry out sterilization cleaning.
This cleaning program is applicable to, and because the content of Fe or Mn in water inlet surpasses design standard, or in the water inlet of hyperfiltration membrane assembly, suspension is high especially, and the non-Organic Pollution that the influent side of film is caused.Preferably, every 3, to 5 months, once clean.
As preferred version of the present invention, described acid solution is 1 ~ 2% citric acid solution or 0.4% HCl solution.
As another preferred version of the present invention, described basic solvent is the NaOH solution that pH value is less than 12.
As one embodiment of the present of invention, described bactericide is the NaClO of concentration 200ppm.
Method provided by the present invention; guaranteeing, under the prerequisite of normal operation efficiency, can to remove timely the impurity after filter property, to filter core, provide protection timely simultaneously; and the materials such as microbial bacterial also can be removed timely by regular chemistry maintenance, guarantee the standard of water quality.
Should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, should be appreciated that non-limiting embodiments describes as just example.The protection domain of the essence that the application will require is more embodied in the scope that independent claims provide, with and dependent claims.
Claims (5)
1. the method that hyperfiltration membrane assembly cleans, wherein the filter core in described hyperfiltration membrane assembly is carried out to following cleaning:
1) adopt acid solution to clean;
2) adopt basic solvent to clean, residual to remove described acid solution;
3) adopt bactericide to carry out sterilization cleaning.
2. maintenance method as claimed in claim 1, is characterized in that: every 3, to 5 months, once clean.
3. maintenance method as claimed in claim 1, is characterized in that: described acid solution is 1 ~ 2% citric acid solution or 0.4% HCl solution.
4. maintenance method as claimed in claim 1, is characterized in that: described basic solvent is the NaOH solution that pH value is less than 12.
5. maintenance method as claimed in claim 1, is characterized in that: described bactericide is the NaClO of concentration 200ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539024.XA CN103537193A (en) | 2013-11-05 | 2013-11-05 | Method for washing ultra-filtration membrane component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539024.XA CN103537193A (en) | 2013-11-05 | 2013-11-05 | Method for washing ultra-filtration membrane component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103537193A true CN103537193A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310539024.XA Pending CN103537193A (en) | 2013-11-05 | 2013-11-05 | Method for washing ultra-filtration membrane component |
Country Status (1)
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| CN (1) | CN103537193A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209007A (en) * | 2014-09-11 | 2014-12-17 | 镇江华域环保设备制造有限公司 | Flux recovery and maintenance method for water purification filtering element |
| CN105561794A (en) * | 2015-08-13 | 2016-05-11 | 常州联江环保科技有限公司 | Method applicable to cleaning ultra-filtration membranes or reverse osmosis membranes |
| CN105983342A (en) * | 2015-01-29 | 2016-10-05 | 东莞新科技术研究开发有限公司 | Method for cleaning ultrafiltration membrane |
| CN107175232A (en) * | 2017-05-27 | 2017-09-19 | 赵志强 | A kind of cleaning of mine hydraulic support backwashing filter core |
-
2013
- 2013-11-05 CN CN201310539024.XA patent/CN103537193A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209007A (en) * | 2014-09-11 | 2014-12-17 | 镇江华域环保设备制造有限公司 | Flux recovery and maintenance method for water purification filtering element |
| CN105983342A (en) * | 2015-01-29 | 2016-10-05 | 东莞新科技术研究开发有限公司 | Method for cleaning ultrafiltration membrane |
| CN105561794A (en) * | 2015-08-13 | 2016-05-11 | 常州联江环保科技有限公司 | Method applicable to cleaning ultra-filtration membranes or reverse osmosis membranes |
| CN107175232A (en) * | 2017-05-27 | 2017-09-19 | 赵志强 | A kind of cleaning of mine hydraulic support backwashing filter core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |