CN100404657C - Cleaning agent for ceramic film and its preparation method - Google Patents
Cleaning agent for ceramic film and its preparation method Download PDFInfo
- Publication number
- CN100404657C CN100404657C CNB2006100388652A CN200610038865A CN100404657C CN 100404657 C CN100404657 C CN 100404657C CN B2006100388652 A CNB2006100388652 A CN B2006100388652A CN 200610038865 A CN200610038865 A CN 200610038865A CN 100404657 C CN100404657 C CN 100404657C
- Authority
- CN
- China
- Prior art keywords
- sodium
- cleaning agent
- ceramic membrane
- diatomite
- benzene sulfonate
- 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.)
- Expired - Fee Related
Links
Landscapes
- Detergent Compositions (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a cleaning agent for ceramic membranes and a preparation method thereof. The cleaning agent is made by mixing the following components according to the weight percentage: 50 to 75% of sodium hydroxide, 3 to 15% of sodium hexametaphosphate, 5 to 15% of sodium alkyl benzene sulfonate, 2 to 8% of diatomite, 1 to 8% of sodium silicate, 0 to 5% of sodium sulfate, 0 to 20% of sodium carbonate, 0 to 5% of carboxymethyl cellulose and 0 to 5% of ethylene diamine tetraacetic acid tetra-sodium salt. The cleaning agent comprises the following preparation method: adding orderly the components into a corrosion proof reactor with the functions of stir and grinding according to listed order to be stirred for 4 to 8 hours at room temperature and then evenly ground to obtain the finished product of the cleaning agent. The cleaning agent can effectively and rapidly restore filtration flux of ceramic membranes, thereby accelerating systematical regeneration; the cleaning agent shortens systematical cleaning time, thereby reducing systematical energy consumption; the cleaning agent has no damage to ceramic membrane tubes, and test data of anti-soaking, anti-pressing, anti-bending and acid and caustic corrosion resistant performance of cleaned ceramic membrane tubes are approximately the same as those of ceramic membrane tubes before being cleaned.
Description
Technical field
The present invention relates to a kind of clean-out system that is applicable to ceramic membrane, particularly a kind of clean-out system that is applicable to the cleaning of the ceramic membrane that filters oil alkali refining waste water, steel rolling emulsion, metal cutting waste water.
Background technology
Alkali refining is an operation in the oil refining process process, domestic grease factory generally adopts intermittent type and two kinds of production technique of continous way, promptly pass through in the alkali and the generation of the free fatty acids in grease soap stock, other impurity of absorbed portion centrifugation from oil simultaneously, thereby the refining of realization crude oil.The washes amount of discharging in washing process is approximately 100～150kg/t.Washes contains impurity such as oil, soap, suspended substance, wherein oil-contg have up to 1～3%.
Can effectively reclaim oil in the washes with ceramic membrane, washes through behind the inorganic membrane filtration because the separated eliminating of impurity, COD total values such as overwhelming majority oil, soap descend more than 80%.
The steel rolling emulsifying liquid waste water is a kind of oily(waste)water that Steel Mill produces, and emulsion mainly is made up of 2～10% mineral oil or vegetables oil, a large amount of anionic or the emulsifying agent and the water of non-ionic type, and wastewater flow rate is very big.
With the ceramic membrane separation method mainly is that effluent quality is good by the effectively catching of film to oil droplet and suspended particles, and oil-contg is less than 10ppm.
In Metal Production, processing and use in order to remove the grease of metallic surface; often adopt alkaline liquid scavenging solution or semiliquid scavenging solution; usually have materials such as water, alkali, tensio-active agent and microbial inoculum in the cleaner for metal; directly get rid of the meeting serious environment pollution, make general water treatment method be difficult to obtain the ideal effect owing to wherein contain a large amount of mineral oil and amount of surfactant.By the processing of ceramic membrane, cleaner for metal is by suitable additional recyclable utilization, economic benefit height.
All belong to oily(waste)water in oil alkali refining waste water, steel rolling emulsion and the metal cutting waste water, handle through ceramic membrane, the membrane contaminant of its generation mainly contains soap stock, grease, protein, mineral oil, emulsifying agent and some impurity.Therefore clean and suitable purging method very important, inappropriate cleaning can cause the regeneration difficulty of film, the lengthening of recovery time.
The purging method of existing ceramic membrane has two kinds of physical method and chemical processes.More serious when the film damage ratio, when adopting the physical method poor effect, need to clean with chemical.
The common chemical clean-out system has following several:
1. acid solution (stronger, more weak as lactic acid) as H3PO4;
2. alkali lye (as NaOH);
3. tensio-active agent (ion or non-ionic type);
4. enzyme (proteolytic enzyme, amylase, glucolase);
5. sterilizing agent (H2O2 and NaOCl);
6. Synergist S-421 95 (EDTA, polyacrylate, Sodium hexametaphosphate 99)
These clean-out systems both can use separately, also can array configuration use.Inorganic acid makes that a part of insoluble substance becomes soluble substance in the pollutent; Organic acid is mainly removed the deposition of inorganic salt; Strong oxidizer and highly basic are the pollutions of removing grease and biological substances such as albumen, algae; Tensio-active agent is mainly removed organic pollutant; And, adopt the enzyme clean-out system for pollution systems such as cell debriss more.Synergist S-421 95 can generate the big material of solubleness with the mineral ion complexing in the pollutent, reduces the long-pending salt of film surface and inner hole deposition and the inorganic pollutant of absorption.
In the film industry, traditional purging method is that soda acid alternately cleans, and for polluting very serious film, adopts strong acid, highly basic alternately to clean usually, and adds oxygenant and tensio-active agent such as clorox.For above three kinds of oily(waste)waters, film pollutes very serious, and consuming time too many by above these methods cleanings, scavenging period is long and cleaning strength is excessive, not only can the life-span of film be impacted, and also can incur loss through delay production, causes damage.
Summary of the invention
The present invention will solve is exactly the defective that above-mentioned prior art exists, for people provide a kind of ceramic membrane cleaning agent that the ceramic membrane that is used to filter three kinds of oily(waste)waters such as oil alkali refining waste water, steel rolling emulsion and metal cutting waste water is effectively cleaned.
The present invention is mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 50～75%
B, sodium polyphosphate 3～15%
C, sodium alkyl benzene sulfonate 5～15%
D, diatomite 2～8%
E, water glass 1～8%
F, sodium sulfate 0～5%
G, yellow soda ash 0～20%
H, Walocel MT 20.000PV 0～5%
I, tetrasodium salt of EDTA 0～5%
Preparation method of the present invention is: in the corrosion resistant reactor that a band stirs and grinds, above-mentioned each component is added successively by row name order, at room temperature stirred 4～8 hours, grind evenly, get product.
The more traditional clean-out system of clean-out system of the present invention has following some advantage:
1, lowers the concentration polarization on film surface greatly, reduced the cleaning frequency of film.
2, recover the filtration flux of ceramic membrane effectively and quickly, quickened the regeneration of system.
3, shorten the scavenging period of system, greatly reduced the energy consumption of system.
4, to the harmless effect of ceramic-film tube, the ceramic-film tube after the cleaning is pressed, resisted folding, acid-alkali-corrosive-resisting performance test through bubble, and is approaching with original test data numerical value.
Embodiment
Embodiment 1
Preferentially be used to handle the better formula following (weight percent) of clean-out system of the present invention of cleaning of the ceramic membrane of alkali refining waste water:
A, sodium hydroxide 55%
B, sodium polyphosphate 10%
C, sodium alkyl benzene sulfonate 12%
D, diatomite 2.5%
E, water glass 2%
F, sodium sulfate 1%
G, yellow soda ash 15%
H, Walocel MT 20.000PV 2%
I, tetrasodium salt of EDTA 0.5%
Preparation method: in the corrosion resistant reactor that a band stirs and grinds, add sodium hydroxide, sodium polyphosphate, sodium alkyl benzene sulfonate, diatomite, water glass, sodium sulfate, yellow soda ash, Walocel MT 20.000PV and tetrasodium salt of EDTA successively, at room temperature stirred 4～8 hours, grind evenly, be granular clean-out system of the present invention.
Embodiment 2
Preferentially be used to handle another better formula following (weight percent) of clean-out system of the present invention of cleaning of the ceramic membrane of alkali refining waste water:
A, sodium hydroxide 62%
B, sodium polyphosphate 5%
C, sodium alkyl benzene sulfonate 12%
D, diatomite 3%
E, water glass 3%
G, yellow soda ash 15%
Preparation method: in the corrosion resistant reactor that a band stirs and grinds, add sodium hydroxide, sodium polyphosphate, sodium alkyl benzene sulfonate, diatomite, water glass and yellow soda ash successively, at room temperature stirred 4～8 hours, and ground evenly, be granular clean-out system of the present invention.
Embodiment 3
Preferentially be used to handle the better formula following (weight percent) of clean-out system of the present invention of cleaning of the ceramic membrane of cold-rolling emulsion:
A, sodium hydroxide 50%
B, sodium polyphosphate 12%
C, sodium alkyl benzene sulfonate 10%
D, diatomite 6%
E, water glass 3%
F, sodium sulfate 2%
G, yellow soda ash 15%
H, Walocel MT 20.000PV 2%
Preparation method: in the corrosion resistant reactor that a band stirs and grinds, add sodium hydroxide, sodium polyphosphate, sodium alkyl benzene sulfonate, diatomite, water glass, sodium sulfate, yellow soda ash and Walocel MT 20.000PV successively, at room temperature stirred 4～8 hours, grind evenly, be granular clean-out system of the present invention.
Embodiment 4
Preferentially be used to handle another better formula following (weight percent) of clean-out system of the present invention of cleaning of the ceramic membrane of cold-rolling emulsion:
A, sodium hydroxide 68%
B, sodium polyphosphate 10%
C, sodium alkyl benzene sulfonate 9%
D, diatomite 2%
E, water glass 2%
G, yellow soda ash 9%
Preparation method: in the corrosion resistant reactor that a band stirs and grinds, add sodium hydroxide, sodium polyphosphate, sodium alkyl benzene sulfonate, diatomite, water glass and yellow soda ash successively, at room temperature stirred 4～8 hours, and ground evenly, be granular clean-out system of the present invention.
Embodiment 5
Preferentially be used to handle the better formula following (weight percent) of clean-out system of the present invention of cleaning of the ceramic membrane of metal cutting waste water:
A, sodium hydroxide 70%
B, sodium polyphosphate 8%
C, sodium alkyl benzene sulfonate 9%
D, diatomite 3%
E, water glass 3%
G, yellow soda ash 4%
1, tetrasodium salt of EDTA 3%
Preparation method: in the corrosion resistant reactor that a band stirs and grinds, add sodium hydroxide, sodium polyphosphate, sodium alkyl benzene sulfonate, diatomite, water glass, yellow soda ash and tetrasodium salt of EDTA successively, at room temperature stirred 4～8 hours, grind evenly, be granular clean-out system of the present invention.
The application method of forming by embodiment 1,2,3,4,5 prescription with the clean-out system of the present invention of preparation method's production:
1. emptying feed liquid is cleaned 5min with hot water (60 ℃).
2. join 1～2% cleaning dosage of the present invention, 60 ℃ of temperature are cleaned 30min.
3. emptying is with hot water (60 ℃) rinsing 5min.
4. 2% nitric acid cleans 30min, 60 ℃ of temperature.
5. emptying is with hot water (60 ℃) rinsing 5min
6. emptying is stand-by
By above step, can recover flux substantially, cleaning process also very effective and also be easy to control.
By replacing purging method with traditional soda acid, and strong acid and strong base alternately cleans, and add the purging method of oxidant content and tensio-active agent and adopt clean-out system of the present invention, replace the purging method repetition test relatively in conjunction with nitric acid simultaneously, find to adopt clean-out system of the present invention on scavenging period and flux recovery situation, very large advantage to be arranged.
Following table is this employing embodiment of the invention 2 or 3 described clean-out systems and the technical feature contrast table that adopts prior art cleaning ceramic film:
| Purging method | Soda acid alternately cleans | Soda acid alternately cleans, and adds oxygenant and tensio-active agent | The embodiment of the invention 2 or 3 clean-out system alternately clean with acid |
| Scavenging period (min) | 182 | 100 | 60 |
| Flux recovers (%) | 96.5 | 96.5 | 99.9 |
Claims (10)
1. ceramic membrane cleaning agent is characterized in that being mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 50～75%
B, sodium polyphosphate 3～15%
C, sodium alkyl benzene sulfonate 5～15%
D, diatomite 2～8%
E, water glass 1～8%
F, sodium sulfate 0～5%
G, yellow soda ash 0～20%
H, Walocel MT 20.000PV 0～5%
I, tetrasodium salt of EDTA 0～5%.
2. ceramic membrane cleaning agent as claimed in claim 1 is characterized in that being mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 55%
B, sodium polyphosphate 10%
C, sodium alkyl benzene sulfonate 12%
D, diatomite 2.5%
E, water glass 2%
F, sodium sulfate 1%
G, yellow soda ash 15%
H, Walocel MT 20.000PV 2%
I, tetrasodium salt of EDTA 0.5%.
3. ceramic membrane cleaning agent as claimed in claim 1 is characterized in that being mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 62%
B, sodium polyphosphate 5%
C, sodium alkyl benzene sulfonate 12%
D, diatomite 3%
E, water glass 3%
G, yellow soda ash 15%
4. ceramic membrane cleaning agent as claimed in claim 1 is characterized in that being mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 50%
B, sodium polyphosphate 12%
C, sodium alkyl benzene sulfonate 10%
D, diatomite 6%
E, water glass 3%
F, sodium sulfate 2%
G, yellow soda ash 15%
H, Walocel MT 20.000PV 2%
5. ceramic membrane cleaning agent as claimed in claim 1 is characterized in that being mixed by following compositions in weight percentage:
Weight percentages of components
A, sodium hydroxide 68%
B, sodium polyphosphate 10%
C, sodium alkyl benzene sulfonate 9%
D, diatomite 2%
E, water glass 2%
G, yellow soda ash 9%
6. ceramic membrane cleaning agent as claimed in claim 1 is characterized in that being mixed by following compositions in weight percentage:
A, sodium hydroxide 70%
B, sodium polyphosphate 8%
C, sodium alkyl benzene sulfonate 9%
D, diatomite 3%
E, water glass 3%
G, yellow soda ash 4%
I, tetrasodium salt of EDTA 3%
7. claim 2 or 3 described clean-out systems are used to filter the purposes of cleaning of the ceramic membrane of alkali refining waste water.
8. claim 4 or 5 described clean-out systems are used to filter the purposes of cleaning of the ceramic membrane of cold-rolling emulsion.
9. the described clean-out system of claim 6 is used for the purposes of cleaning of the ceramic membrane of filtering metal cutting waste water.
10. the preparation method of any described ceramic membrane film clean-out system of claim 1-6, it is characterized in that in the corrosion resistant reactor that a band stirs and grinds, row name order by the listed component of each claim adds each component successively, at room temperature stirred 4～8 hours, grind evenly, get product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100388652A CN100404657C (en) | 2006-03-15 | 2006-03-15 | Cleaning agent for ceramic film and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100388652A CN100404657C (en) | 2006-03-15 | 2006-03-15 | Cleaning agent for ceramic film and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837341A CN1837341A (en) | 2006-09-27 |
| CN100404657C true CN100404657C (en) | 2008-07-23 |
Family
ID=37014849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100388652A Expired - Fee Related CN100404657C (en) | 2006-03-15 | 2006-03-15 | Cleaning agent for ceramic film and its preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100404657C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288917A (en) * | 2013-05-14 | 2013-09-11 | 甘肃凯源生物技术开发中心 | Method for separating soluble grape seed protein by use of membrane and cleaning method of membrane |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431675C (en) * | 2006-11-03 | 2008-11-12 | 上海印钞厂 | Scavenger for ultrafiltering ceramic membrane and its prepn and application |
| CN100450596C (en) * | 2007-06-08 | 2009-01-14 | 江南大学 | Micro-filtering or super-filtering film regenerating agent and preparing method |
| CN100450595C (en) * | 2007-06-08 | 2009-01-14 | 江南大学 | Regenerating preprocessing agent for inorganic membrane or ultrafilter membrane and preparation method thereof |
| CN101219341B (en) * | 2007-09-29 | 2010-11-10 | 湖州欧美化学有限公司 | Detergent suitable for cleaning hollow fiber ultrafiltration membrane and method for producing the same |
| CN101760353B (en) * | 2009-11-17 | 2012-11-28 | 上海丰信环保科技有限公司 | Composite cleaning agent for cleaning membrane system containing silicon, iron, calcium and magnesium contaminants |
| CN101757857B (en) * | 2009-11-17 | 2012-11-28 | 上海丰信环保科技有限公司 | Composite cleaning agent for cleaning membrane system with organic fouling |
| CN101757858B (en) * | 2009-11-17 | 2012-10-10 | 上海丰信环保科技有限公司 | Composite cleaning agent for cleaning membrane system with organic fouling |
| CN101760352B (en) * | 2009-11-17 | 2012-10-10 | 上海丰信环保科技有限公司 | Composite cleaning agent for cleaning membrane system containing inorganic substance contaminants |
| CN102139173B (en) * | 2010-01-29 | 2013-02-27 | 铜陵市华兴化工有限公司 | Cleaning agent for ceramic filter plate and cleaning method thereof |
| CN102285705B (en) * | 2010-06-21 | 2014-07-23 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN102029113B (en) * | 2010-11-09 | 2012-09-26 | 中国海洋石油总公司 | Preparation method of gourmet powder industrial waste water treatment membrane cleaning agent |
| JP6289802B2 (en) * | 2011-07-06 | 2018-03-07 | 三菱ケミカル株式会社 | Filtration membrane cleaner and filtration membrane cleaning method |
| CN102343217A (en) * | 2011-09-21 | 2012-02-08 | 石家庄开发区德赛化工有限公司 | Ultrafiltration membrane alkaline cleaner |
| CN103127836B (en) * | 2011-11-30 | 2016-03-02 | 上海梅山钢铁股份有限公司 | Ceramic membrane cleaning agent |
| CN103143264B (en) * | 2011-12-07 | 2015-07-22 | 中国石油化工股份有限公司 | Cleaning agent composition and cleaning method for reverse osmosis membrane |
| CN102658034B (en) * | 2012-04-30 | 2014-07-02 | 景德镇陶瓷学院 | Nano coating modified ceramic microfiltration membrane cleaning agent and preparation method and application thereof |
| CN103463991A (en) * | 2013-09-26 | 2013-12-25 | 中国海洋石油总公司 | Electrodialysis ion-exchange membrane cleaning agent and preparation method thereof |
| CN103585890A (en) * | 2013-11-27 | 2014-02-19 | 杭州创享环境技术有限公司 | Cleaning method for silicon carbide membrane used for impurity removal in production of epoxy ester plasticizer |
| CN105080347A (en) * | 2014-05-20 | 2015-11-25 | 天津市鑫磊净化设备有限公司 | Hollow fiber ultrafiltration membrane cleaning agent, preparation and application thereof |
| CN104492273A (en) * | 2014-12-31 | 2015-04-08 | 伊犁川宁生物技术有限公司 | Alkaline membrane washing agent and preparation method thereof |
| CN104998548A (en) * | 2015-06-30 | 2015-10-28 | 苏州龙腾万里化工科技有限公司 | Cleaning agent for inorganic ceramic ultrafiltration membrane |
| CN107523439A (en) * | 2017-08-10 | 2017-12-29 | 青海盐湖工业股份有限公司 | Electrolytic metal magnesium art ceramics membrane filter system professional cleaning agent |
| CN107674769B (en) * | 2017-10-18 | 2021-02-02 | 绍兴自远磨具有限公司 | Ceramic cleaning solution and manufacturing method and application thereof |
| CN109694782B (en) * | 2017-10-24 | 2021-06-25 | 蓝思科技（长沙）有限公司 | Ceramic cleaning agent and preparation method thereof |
| CN108031297A (en) * | 2017-12-06 | 2018-05-15 | 常州朋悦纺织品有限公司 | A kind of ceramic membrane cleaning agent |
| CN108499367A (en) * | 2018-02-11 | 2018-09-07 | 湖南华菱节能环保科技有限公司 | A kind of ceramic membrane cleaning agent and preparation method thereof |
| CN111760460B (en) * | 2020-07-03 | 2021-03-26 | 广东嘉元科技股份有限公司 | Cleaning process for RO (reverse osmosis) membrane for recycling reclaimed water of electrolytic copper foil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115333A (en) * | 1994-07-20 | 1996-01-24 | 徐军 | Sterilizing washing powder |
| CN1036074C (en) * | 1991-12-11 | 1997-10-08 | 化学工业部上海化工研究院 | Prescription of composite detergent |
| CN1115401C (en) * | 2000-02-04 | 2003-07-23 | 上海华士实业总公司 | Detergent |
| CN1458258A (en) * | 2003-03-13 | 2003-11-26 | 姜志明 | Multiple purpose high efficiency low bubble greasy dirt cleaning agent |
-
2006
- 2006-03-15 CN CNB2006100388652A patent/CN100404657C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036074C (en) * | 1991-12-11 | 1997-10-08 | 化学工业部上海化工研究院 | Prescription of composite detergent |
| CN1115333A (en) * | 1994-07-20 | 1996-01-24 | 徐军 | Sterilizing washing powder |
| CN1115401C (en) * | 2000-02-04 | 2003-07-23 | 上海华士实业总公司 | Detergent |
| CN1458258A (en) * | 2003-03-13 | 2003-11-26 | 姜志明 | Multiple purpose high efficiency low bubble greasy dirt cleaning agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288917A (en) * | 2013-05-14 | 2013-09-11 | 甘肃凯源生物技术开发中心 | Method for separating soluble grape seed protein by use of membrane and cleaning method of membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1837341A (en) | 2006-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100404657C (en) | Cleaning agent for ceramic film and its preparation method | |
| CN101219341B (en) | Detergent suitable for cleaning hollow fiber ultrafiltration membrane and method for producing the same | |
| CN103341325B (en) | Dual-purpose film cleaning agent and its preparation method and use | |
| CN102343217A (en) | Ultrafiltration membrane alkaline cleaner | |
| CN117186979A (en) | Cutting fluid waste liquid emission-free regenerated environment-friendly treatment additive and treatment method | |
| CN102716674A (en) | Cleaning agent for ceramic membrane for oilfield produced water and cleaning method thereof | |
| CN102658034B (en) | Nano coating modified ceramic microfiltration membrane cleaning agent and preparation method and application thereof | |
| CN100431675C (en) | Scavenger for ultrafiltering ceramic membrane and its prepn and application | |
| CN111437728A (en) | Reverse osmosis special-purpose pickling cleaning agent and preparation method thereof | |
| CN102220592B (en) | Foamless floating-oil-type alkaline cleaning agent used for pre-treatment of pre-coated steel plate | |
| CN106178965A (en) | A kind of Membrane cleaning protective agent | |
| CN113122394A (en) | Ceramic filter plate cleaning agent and application thereof in cleaning ceramic plate filter | |
| US5368779A (en) | Detergent with cleaning and waste water treating capabilities containing polyacrylate and dimethylthiocarbamate | |
| CN101757857B (en) | Composite cleaning agent for cleaning membrane system with organic fouling | |
| CN103127836A (en) | Ceramic membrane cleaning agent | |
| CN110862879A (en) | Environment-friendly efficient degreasing industrial cleaning agent | |
| CN103463991A (en) | Electrodialysis ion-exchange membrane cleaning agent and preparation method thereof | |
| CN113881515B (en) | Cleaning agent and cleaning method for nanofiltration membrane or reverse osmosis membrane | |
| CN114504948B (en) | Reverse osmosis membrane silica scale cleaning agent and preparation method thereof | |
| CN111575123B (en) | Special cleaning agent for ceramic anilox roller and preparation method and application thereof | |
| CN110478983B (en) | Regeneration cleaning process of combined filter element | |
| CN211620159U (en) | High-salinity wastewater quenching and recycling process treatment device | |
| CN208717127U (en) | A kind of pickling sludge resource processing apparatus | |
| JPH11323391A (en) | Aqueous degreasing bath for metallic article and method for operating same | |
| CN101254411A (en) | Alkaline hyperfiltration membrane cleaning agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20180315 |