CN108939926A - Cleaning agents of membrane and its preparation and application - Google Patents
Cleaning agents of membrane and its preparation and application Download PDFInfo
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- CN108939926A CN108939926A CN201811021432.5A CN201811021432A CN108939926A CN 108939926 A CN108939926 A CN 108939926A CN 201811021432 A CN201811021432 A CN 201811021432A CN 108939926 A CN108939926 A CN 108939926A
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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
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- 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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Abstract
The invention belongs to sewage-treating agent fields, and in particular to a kind of cleaning agents of membrane and its preparation and application.For the problem that being currently used for the film of garbage percolation liquid treating system film process by sulphur pollution, without special effective cleaning agents of membrane, the present invention provides a kind of cleaning agents of membrane, and composition includes: the component A and B component of separation packaging；Component A composition includes: 55~60 parts of deionized water according to parts by weight, 5~10 parts of chelating agent, 15~25 parts of sodium hydroxide, 5~10 parts of sodium carbonate, 1~3 part of neopelex, 1~3 part and 1~5 part of hydramine of small molecular alcohol；B component composition includes: 55~60 parts of deionized water according to parts by weight, 3~5 parts of chelating agent, 3~6 parts of polyphosphate, 3~5 parts of sodium carbonate, 10~20 parts and 5~10 parts of hydramine of emulsifier.Cleaning agents of membrane of the invention is suitable for nanofiltration, micro-filtration, RO, DTRO and SRO system, can effectively remove the organo-mineral complexing pollutant of sulfur-bearing.
Description
Technical field
The invention belongs to sewage-treating agent fields, and in particular to a kind of cleaning agents of membrane and its preparation and application.
Background technique
Landfill leachate is a kind of high concentrated organic wastewater, and complicated component, water quality and quantity variation are greatly.Landfill leachate
Source mainly have the moisture of direct precipitation, rainwash, surface irrigation, underground water, rubbish itself, the moisture in covering material and
The generation water etc. of refuse biochemical reaction.Influence landfill leachate ingredient factor mainly have: component of refuse, place weather conditions,
Hydrogeological condition of raining, landfill condition and the landfill time in place etc..The variation of the water quality and quantity of landfill leachate is big, and becomes
Law is complicated.Cod codcr, biological oxygen consumption BOD on the five5, the content of ammonia nitrogen it is higher, and prolonging with the landfill time
Long, the organic nitrogen in rubbish is converted into inorganic nitrogen, and ammonia nitrogen mass concentration increases.With " household refuse landfill sites contamination control mark
It is quasi- " enabling of (GB 16889-2008), traditional landfill leachate treatment uses single biochemical treatment process, is no longer satisfied
Water outlet requires, and sight is turned to highly efficient membrane separation technique by people.Membrane separation technique applied to percolate processing is main
There are ultrafiltration, nanofiltration, micro-filtration, reverse osmosis (RO), disc tube reverse osmosis (dt-ro) film (DTRO), super reverse osmosis membrane (SRO) etc., majority diafiltration
Liquid processing ensures that effluent quality is up to standard using two or more dual-membrane process.
It is found during practice, nanofiltration, RO, DTRO and SRO are when handling landfill leachate, in addition to there are common
Organic pollution, outside inorganic matter pollution and microbial contamination, the case where there is also sulphur pollutions.Landfill leachate is detested in landfill yard
Aerobe fermentation and biological treatment anaerobic stages sulfate reducing bacteria breed breeding, sulfide are converted by sulfate radical, into membranous system
Afterwards, sulfide is gradually oxidized to form drusen in intermediate water tank and membranous system, these drusens are logical in filter, film
Road, film surface are built up, and fine and close pollution layer is formed, and are ultimately caused film dirt and are blocked up, seriously affect the operational efficiency and service life of film.
For above-mentioned sulphur pollution situation, conventional acidity and alkaline cleaner are all lack of pertinence at present, and cleaning effect is bad, or even meeting
Membrane component is caused to be scrapped.
Currently, existing acidic cleaner and alkaline cleaner are bad to the cleaning effect of sulphur pollution, there are no special needles
To the cleaning agents of membrane of sulphur pollution.
Summary of the invention
The technical problem to be solved in the present invention are as follows: be currently used for the film of garbage percolation liquid treating system film process by sulphur dirt
The problem of dye, no special effective cleaning agents of membrane.
The technical solution of present invention solution above-mentioned technical problem are as follows: a kind of cleaning agents of membrane is provided.The composition of the cleaning agents of membrane
It include: the component A and B component of separation packaging；
Component A composition includes: 55~60 parts of deionized water according to parts by weight, and 5~10 parts of chelating agent, hydroxide
15~25 parts of sodium, 5~10 parts of sodium carbonate, 1~3 part of neopelex, 1~3 part and 1~5 part of hydramine of small molecular alcohol；
B component composition includes: 55~60 parts of deionized water according to parts by weight, and 3~5 parts of chelating agent, polyphosphoric acids
3~6 parts of salt, 3~5 parts of sodium carbonate, 10~20 parts and 5~10 parts of hydramine of emulsifier.
Wherein, in above-mentioned cleaning agents of membrane, the chelating agent is at least one of EDTA-2Na or EDTA-4Na.
Wherein, in above-mentioned cleaning agents of membrane, the small molecular alcohol is at least one of ethyl alcohol or isopropanol.
Wherein, in above-mentioned cleaning agents of membrane, the hydramine is at least one in monoethanolamine, diethanol amine or triethanolamine
Kind.
Wherein, in above-mentioned cleaning agents of membrane, the polyphosphate is sodium tripolyphosphate, calgon or potassium pyrophosphate
At least one of.
Wherein, in above-mentioned cleaning agents of membrane, the emulsifier is pareth sulfate, alkyl polyoxyethylene ether
Or at least one of polyoxethylene octylphenyl phenol ether.
The present invention also provides a kind of preparation methods of above-mentioned cleaning agents of membrane, comprising the following steps:
A, component A is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, is added 5~10 parts
Chelating agent and 15~25 parts of sodium hydroxides, stirring and dissolving is completely and temperature is lower than after 40 DEG C, sequentially adding 5~10 parts of sodium carbonate, and 1
~3 parts of neopelexes, 1~3 part of small molecular alcohol, 1~5 part of hydramine, stirring and dissolving is complete, and component A is prepared；
B, B component is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, and 3~5 portions of chelas are added
Mixture and 1~3 part of sodium hydroxide, stirring and dissolving is completely and temperature is lower than after 40 DEG C, and 3~6 parts of polyphosphates and 3~5 are added
Part sodium carbonate, sequentially adds 10~20 parts of emulsifiers and 5~10 parts of hydramine after dissolution completely, stirring and dissolving is complete, and B is prepared
Component；
C, component A is separated into packaging with B component, obtains cleaning agents of membrane.
Wherein, component A is with B component weight ratio when separating packaging in the preparation method of above-mentioned cleaning agents of membrane, described in step c
3~5 ︰ 1.
The present invention also provides a kind of purposes of above-mentioned cleaning agents of membrane, for cleaning the film after filtering spam percolate.Into
One step, the film includes in nanofiltration membrane, microfiltration membranes, coiled reverse osmosis membrane, disc tube reverse osmosis (dt-ro) film or super reverse osmosis membrane
At least one.
The present invention also provides a kind of application methods of above-mentioned cleaning agents of membrane, in use, by the component A and B of separation packaging
Component is uniformly mixed by weight 3~5 ︰ 1, Membrane cleaning method cleaning routinely.
Wherein, in the application method of above-mentioned cleaning agents of membrane, the mass concentration of cleaning agents of membrane is 2~5% when use.
The invention has the benefit that
The present invention provides a kind of compound cleaning agents of membrane including two kinds of components of A, B, when use two components by weight 3~
5 ︰ 1 are mixed.Component A mainly plays dissolution and peptizaiton in inventive film cleaning agent, and B component mainly plays removing and emulsification is made
With, the two with the use of can be synergistic, improve the removal to amounts of sulphur contaminants and act on, moreover it is possible to effective cleaning organic matter dirt it is stifled and
Microorganism dirt is stifled；Cleaning agent of the invention uses anionic surfactant (pareth sulfate, detergent alkylate
Sodium sulfonate belongs to anion) with nonionic surfactant (alkyl polyoxyethylene ether and polyoxethylene octylphenyl phenol ether right and wrong from
Sub- surfactant) collocation use, the synergistic effect and salt resistant character of surfactant are improved, makes it in the feelings of high content of salt
Good emulsification and dispersion effect are still kept under condition.Cleaning agents of membrane of the invention be applicable to nanofiltration, micro-filtration, RO, DTRO and
SRO system, especially high-concentration waste moisture film concentration technique, can effectively remove the organo-mineral complexing pollutant of sulfur-bearing,
Easy to use, the cleaning equipment condition of general membranous system is able to satisfy requirement.
Specific embodiment
The present invention provides a kind of cleaning agents of membrane, composition includes: the component A and B component of separation packaging；
Component A composition includes: 55~60 parts of deionized water according to parts by weight, and 5~10 parts of chelating agent, hydroxide
15~25 parts of sodium, 5~10 parts of sodium carbonate, 1~3 part of neopelex, 1~3 part and 1~5 part of hydramine of small molecular alcohol；
B component composition includes: 55~60 parts of deionized water according to parts by weight, and 3~5 parts of chelating agent, polyphosphoric acids
3~6 parts of salt, 3~5 parts of sodium carbonate, 10~20 parts and 5~10 parts of hydramine of emulsifier.
It joined chelating agent in cleaning agent of the present invention, primarily served in cleaning some in complexing and pollutant
Cation complex prevents cation from forming insoluble chemical compound with organic matter, to play the role of clean stripping dispersion.Chelating
Agent is many kinds of, ethylenediamine tetra-acetic acid (EDTA), nitrilotriacetic acid (NTA), diethylene-triamine pentaacetic acid (DTPA), mono- hydroxyl second of N
Base ethamine triacetic acid (HEDTA) etc. can be employed as chelating agent, and in order to keep chelate effect more preferable, cost is lower, chelating of the invention
Agent is preferably at least one of EDTA-2Na or EDTA-4Na.
Wherein, in above-mentioned cleaning agents of membrane, the small molecular alcohol is at least one of ethyl alcohol or isopropanol.Small molecular alcohol
The alcohol that carbon atom number is less than 4 is referred mainly to, has than stronger peculiar smell, is not suitable for as cleaning agents of membrane later more than 4.Small
In molecule alcohol, methanol is toxic and boiling point is lower, and effect is bad, the moderate boiling point of ethyl alcohol and isopropanol, no overt toxicity, cost performance
Height, for this purpose, small molecular alcohol of the present invention is preferably at least one of ethyl alcohol or isopropanol.
Wherein, in above-mentioned cleaning agents of membrane, for better emulsion dispersion, the hydramine is monoethanolamine, diethanol amine
Or at least one of triethanolamine；Above-mentioned hydramine toxicity is low, and non-carcinogenesis, and without obvious peculiar smell, use is safer.
Wherein, in above-mentioned cleaning agents of membrane, in order to improve the decontamination, dispersion and emulsifying capacity of cleaning agents of membrane, the poly
Phosphate is at least one of sodium tripolyphosphate, calgon or potassium pyrophosphate.
Wherein, in above-mentioned cleaning agents of membrane, the pollution stripped down in order to prevent forms secondary deposition, improves cleaning effect more
Good, the emulsifier is in pareth sulfate, alkyl polyoxyethylene ether or polyoxethylene octylphenyl phenol ether
It is at least one.
The present invention also provides a kind of preparation methods of above-mentioned cleaning agents of membrane, comprising the following steps:
A, component A is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, is added 5~10 parts
Chelating agent and 15~25 parts of sodium hydroxides, stirring and dissolving is completely and temperature is lower than after 40 DEG C, sequentially adding 5~10 parts of sodium carbonate, and 1
~3 parts of neopelexes, 1~3 part of small molecular alcohol, 1~5 part of hydramine, stirring and dissolving is complete, and component A is prepared；
B, B component is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, and 3~5 portions of chelas are added
Mixture and 1~3 part of sodium hydroxide, stirring and dissolving is completely and temperature is lower than after 40 DEG C, and 3~6 parts of polyphosphates and 3~5 are added
Part sodium carbonate, sequentially adds 10~20 parts of emulsifiers and 5~10 parts of hydramine after dissolution completely, stirring and dissolving is complete, and B is prepared
Component；
C, component A is separated into packaging with B component, obtains cleaning agents of membrane.
Wherein, component A is with B component weight ratio when separating packaging in the preparation method of above-mentioned cleaning agents of membrane, described in step c
3~5 ︰ 1.
Wherein, in above-mentioned cleaning agents of membrane, the weight ratio of the component A and B component is 3~5 ︰ 1.When component A and B component
When weight ratio is 3~5 ︰ 1, synergistic effect is become apparent, and cleaning effect is more preferable.Weight ratio is below or above 3~5 ︰ 1, cleaning effect
Fruit reduces.
Currently, there are no a kind of in the market cleaned specifically for sulphur pollution in garbage percolation liquid treating system it is special
Cleaning agent.Cleaning organic matter or inorganic sediments (carbonate, metal oxide, the sulphur that existing cleaning agents of membrane mainly considers
Hydrochlorate) etc. caused by dirt it is stifled, organic matter mainly remove from system and is taken out of with water flow by organic pollution, and the mechanism of action is to soak
Profit, removing and dispersion；Inorganic matter pollution is mainly removed using the method for pickling.
But sulphur pollution is both different from organic pollution, also different from inorganic matter pollute, using above two cleaning agent all without
The cleaning effect that method has reached.The present invention has selected preferably have leaching in cleaning agents of membrane of the design specifically for sulphur pollution
Profit is removed, the component (EDTA, polyphosphate, neopelex etc.) of divergent function, and cleaning agents of membrane has alkalinity clear
The effect of lotion can remove the organic pollution in film.Meanwhile the present invention is also particularly added to alcohol ammonia, polyoxethylene octylphenyl
The components such as phenol ether (OP-10) can effectively improve the speed of dissolution amounts of sulphur contaminants, be convenient for pollutant band system.Another party
Face, in order to solve the problems, such as that the pollutant being stripped out has little time dissolution and may cause secondary deposition, the present invention is also special
It joined the components such as pareth sulfate, alkyl polyoxyethylene ether (AEO), the amounts of sulphur contaminants being stripped out carried out
Emulsification and dispersion, avoid secondary deposition, promote cleaning effect, reduce the further dirty stifled risk of film below.
Sharpest edges of the present invention are the combination being formulated, and the present invention has finally determined component A and group by a large amount of screening
Divide the formula of B and the content of each ingredient, it is best to the Membrane cleaning effect of sulphur pollution under the content.A group is packaged by separation
Divide and B component, one side solve compatibility issues and on the other hand preferably have found the optimum proportioning of two kinds of components, especially
For the optimum proportioning of sulphur pollution.
Further, the also creative emulsifier that 10~20 parts are added in B component of the present invention, it is living as surface
Property agent, present invention discover that pareth sulfate (AES), alkyl polyoxyethylene ether (AEO), ethylene oxide octyl phenol ether
(OP-10) emulsifying effectiveness is especially good, has extremely strong synergistic effect with remaining component, solution rate obviously adds after addition
Fastly, unexpected technical results have been achieved.
In summary, by reasonably being cooperated each component, collective effect not only has cleaning agents of membrane of the invention
The effect of conventional alkaline cleaning agent, moreover it is possible to which effectively removing amounts of sulphur contaminants, for cleaning the film of sulphur pollution, cleaning effect is good, is worth
It promotes the use of.
Cleaning agent of the present invention is suitable for that the film of cleaning is the film after filtering spam percolate, is particularly suitable for landfill leachate system
The cleaning of nanofiltration membrane, microfiltration membranes, coiled reverse osmosis membrane, disc tube reverse osmosis (dt-ro) film or super reverse osmosis membrane in system.
Explanation will be further explained to a specific embodiment of the invention by embodiment below, but do not indicated this
The protection scope of invention is limited in range described in embodiment.
Embodiment 1 prepares inventive film cleaning agent
Component A: weighing 55 parts of deionized waters in reaction kettle, opens agitating device, and opening clamp jacket water is first added 5
EDTA-4Na and 25 part of sodium hydroxide of part sequentially adds 5 parts of sodium carbonate, 3 parts of dodecanes after dissolving complete and temperature lower than 40 DEG C
Base benzene sulfonic acid sodium salt, 2 parts of ethyl alcohol, 5 parts of triethanolamines, stirring and dissolving are got product completely.
B component: its producting proportion are as follows: weigh 56 parts of deionized water in reaction kettle, turn on agitator, collet is passed through cooling
Water, is added 5 parts of EDTA-4Na and 3 part of sodium hydroxides, stirring and dissolving completely and temperature lower than 40 DEG C after, 3 parts of tripolyphosphates are added
Sodium and 3 parts of sodium carbonate sequentially add 10 parts of pareth sulfates (AES), 10 parts of polyoxy second after stirring and dissolving is complete
Alkene octyl phenol ether (OP-10) and 10 parts of triethanolamines, stirring and dissolving are got product completely.
Embodiment 2 prepares inventive film cleaning agent
Component A: weighing 60 parts of deionized waters in reaction kettle, opens agitating device, and opening clamp jacket water is first added 10
Part EDTA-2Na and 15 part of sodium hydroxide, dissolution completely and temperature lower than 40 DEG C after, sequentially add 10 parts of sodium carbonate, 1 part 12
Sodium alkyl benzene sulfonate, 1 part of isopropanol, 3 parts of diethanol amine, stirring and dissolving are got product completely.
B component: its producting proportion are as follows: weigh 58 parts of deionized water in reaction kettle, turn on agitator, collet is passed through cooling
Water, is added 3 parts of EDTA-2Na and 3 part of sodium hydroxides, stirring and dissolving completely and temperature lower than 40 DEG C after, 3 parts of hexa metaphosphoric acids are added
Sodium, 3 parts of potassium pyrophosphates and 5 parts of sodium carbonate, sequentially add 10 parts of pareth sulfates after stirring and dissolving is complete
(AES), 5 parts of alkyl polyoxyethylene ethers (AEO), 5 parts of polyoxethylene octylphenyl phenol ethers (OP-10) and 5 parts of diethanol amine stir molten
Solution is got product completely.
Embodiment 3 prepares inventive film cleaning agent
Component A: weighing 58 parts of deionized waters in reaction kettle, opens agitating device, and opening clamp jacket water is first added 8
EDTA-2Na and 20 part of sodium hydroxide of part sequentially adds 8 parts of sodium carbonate, 2 parts of dodecanes after dissolving complete and temperature lower than 40 DEG C
Base benzene sulfonic acid sodium salt, 3 parts of isopropanols, 1 part of triethanolamine, stirring and dissolving are got product completely.
B component: weighing 60 parts of deionized water in reaction kettle, turn on agitator, and collet is passed through cooling water, is added 4 parts
EDTA-4Na and 1 part of sodium hydroxide, stirring and dissolving is completely and temperature is lower than after 40 DEG C, being added 2 parts of sodium tripolyphosphates, 4 parts of burnt phosphorus
Sour potassium and 5 parts of sodium carbonate sequentially add 5 parts of pareth sulfates (AES), 10 parts of polyoxy second after stirring and dissolving is complete
Alkene octyl phenol ether (OP-10) and 8 parts of monoethanolamines, stirring and dissolving are got product completely.
Embodiment 4 prepares inventive film cleaning agent
Component A: weighing 60 parts of deionized waters in reaction kettle, opens agitating device, and opening clamp jacket water is first added 5
EDTA-2Na and 21 part of sodium hydroxide of part sequentially adds 5 parts of sodium carbonate, 2 parts of dodecanes after dissolving complete and temperature lower than 40 DEG C
Base benzene sulfonic acid sodium salt, 3 parts of isopropanols, 4 parts of diethanol amine, stirring and dissolving are got product completely.
B component: weighing 55 parts of deionized water in reaction kettle, turn on agitator, and collet is passed through cooling water, is added 3 parts
EDTA-2Na and 2 part of sodium hydroxide, stirring and dissolving is completely and temperature is lower than after 40 DEG C, being added 3 parts of sodium tripolyphosphates, 3 parts of burnt phosphorus
Sour potassium and 3 parts of sodium carbonate sequentially add 20 parts of polyoxethylene octylphenyl phenol ethers (OP-10), 5 parts of diethanols after stirring and dissolving is complete
Amine and 6 parts of triethanolamines, stirring and dissolving are got product completely.
Efficacy in laboratory verifying:
The film process agent that Examples 1 to 4 is prepared carries out Membrane cleaning experiment, and detailed process is as follows:
Dissolution experiment is carried out with the sulfurous pollutants fetched in certain landfill leachate project membrane component, is prepared with desalted water,
The concentration of sulfurous pollutants is formulated as 0.2%.Component A and the total concentration of B component are water for cleaning in used cleaning agent
The 3% of total weight, specific experiment method and phenomenon are as shown in table 1 below:
In order to make to test closer to live actual operating mode condition, experimental selection with it is live fetch come film solved
It cuts open, drying weighing counting statistics, obtained total pollutant weight is sampled to the pollutant adhered on unit area, then remove
The volume of cleaning solution, obtains 0.2% sulfurous pollutants in cleaning water tank.
The solute effect of sulfurous pollutants investigates method are as follows: uses 100g cleaning solution, weighs 0.2g amounts of sulphur contaminants, dissolution experiment
After, it is filtered with the filter paper of constant weight, and insoluble matter is washed in three times with 100ml desalted water, finally
It weighs after undissolved part and filter paper are dried together, deducts the constant weight of filter paper, just obtain the weight of insoluble matter, thus instead
Calculate dissolution rate.
Dissolution rate
Wherein, m0For dissolution experiment sample used total weight；
m1For insoluble matter plus filter paper total weight；
m3For filter paper constant weight weight.
The different cleaning agents of membrane using effect table of table 1
From above-mentioned experimental result: cleaning agent of the present invention has good dispersion and dissolution to sulfurous pollutants,
35~40 DEG C are heated to, scavenging period can reduce half or so, in comparison component A and effect when 4 ︰ 1 of B component weight ratio
Preferably.
Production effect verifying:
Cleaning agents of membrane in Example 1 is verified, the specific steps are as follows:
(1) after water rinses in on-line cleaning equipment, desalted water is filled into, clean cycle is established, checks for leaks, set
Standby operation conditions etc..Start work of making up a prescription after inspection, cleaning is first heated to 35~40 DEG C with desalted water, blowback will be cleaned
Stream valve opening is opened to maximum, cleaning agent component A and B component is added in cleaning water tank by weight 4:1, compound concentration is
3%, after mixing, sampling and testing pH, pH reach after setting range (11~13), turn down the aperture of cleaning pump return valve, allow
Cleaning solution enters membrane component, and intake pressure is adjusted to the pressure condition needed.
(2) pH of the primary cleaning phegma of test in cleaning process every 10 minutes, temperature, and recording film variations of flux.Temperature
At 35~40 DEG C, pH control is recycled 50 minutes and is impregnated 10 minutes 11~13 for control, such (total alkali cleaning time in 6~8 periods
About 6~8 hours), soaked overnight next day circular flow 30 minutes, terminates alkali cleaning, carries out water flushing.
(3) if occur in cleaning process cleaning solution color it is relatively deep or dirtier when, can will clean the row of the cleaning solution in water tank
Fall a part, and desalted water and cleaning agent is replenished in time.
(4) it can be considered clean endpoint after cleaning flux, pH, coloration etc. are basicly stable, empty cleaning solution, rushed with desalted water
When to be washed till pH be neutral, it can terminate to rinse.
(5) bringing normally into operation or pickling can be then carried out after cleaning, but system must be thoroughly rushed before pickling
It washes, acid-base neutralization reaction is avoided to cause unnecessary damage to membrane component.
Clean according to the above method to garbage percolation liquid treating system one: reverse osmosis design processing capacity is 13m3/ h,
Before cleaning, processing capacity 10m3/ h, water yield 8m3/h；After cleaning, processing capacity 12.5m3/ h, water yield 10m3/
h.Water yield increases 2m after cleaning3/ h, the amplitude that promoted are 25%, have reached expected cleaning effect.
Clean according to the above method to garbage percolation liquid treating system two: reverse osmosis design processing capacity is 15m3/ h,
Before cleaning, processing capacity 12m3/ h, water yield 8m3/h；After cleaning, processing capacity 14m3/ h, water yield 11m3/h。
Water yield increases 3m after cleaning3/ h, the amplitude that promoted are 37.5%, have reached expected cleaning effect.
Claims (10)
1. cleaning agents of membrane, which is characterized in that it includes: the component A and B component for separating packaging that it, which is formed,；
Component A composition includes: 55~60 parts of deionized water according to parts by weight, and 5~10 parts of chelating agent, sodium hydroxide 15
~25 parts, 5~10 parts of sodium carbonate, 1~3 part of neopelex, 1~3 part and 1~5 part of hydramine of small molecular alcohol；
B component composition includes: 55~60 parts of deionized water according to parts by weight, and 3~5 parts of chelating agent, polyphosphate 3
~6 parts, 3~5 parts of sodium carbonate, 10~20 parts and 5~10 parts of hydramine of emulsifier.
2. cleaning agents of membrane according to claim 1, it is characterised in that: the chelating agent is EDTA-2Na or EDTA-4Na
At least one of.
3. cleaning agents of membrane according to claim 1, it is characterised in that: the small molecular alcohol is in ethyl alcohol or isopropanol
It is at least one.
4. cleaning agents of membrane according to claim 1, it is characterised in that: the hydramine be monoethanolamine, diethanol amine or
At least one of triethanolamine.
5. cleaning agents of membrane according to claim 1, it is characterised in that: the polyphosphate is sodium tripolyphosphate, six
At least one of sodium metaphosphate or potassium pyrophosphate.
6. cleaning agents of membrane according to claim 1, it is characterised in that: the emulsifier is alkyl polyoxyethylene ether sulfuric acid
At least one of sodium, alkyl polyoxyethylene ether or polyoxethylene octylphenyl phenol ether.
7. the preparation method of the described in any item cleaning agents of membrane of claim 1~6, which comprises the following steps:
A, component A is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, and 5~10 parts of chelatings are added
Agent and 15~25 parts of sodium hydroxides, stirring and dissolving is completely and temperature is lower than after 40 DEG C, sequentially adding 5~10 parts of sodium carbonate, and 1~3
Part neopelex, 1~3 part of small molecular alcohol, 1~5 part of hydramine, stirring and dissolving is complete, and component A is prepared；
B, B component is prepared:
55~60 parts of deionized water are weighed in reaction kettle, turn on agitator, collet is passed through cooling water, and 3~5 parts of chelating agents are added
With 1~3 part of sodium hydroxide, stirring and dissolving is completely and temperature is lower than after 40 DEG C, and 3~6 parts of polyphosphates and 3~5 parts of carbon are added
Sour sodium sequentially adds 10~20 parts of emulsifiers and 5~10 parts of hydramine after dissolution completely, and stirring and dissolving is complete, and B group is prepared
Point；
C, component A is separated into packaging with B component, obtains cleaning agents of membrane.
8. the preparation method of cleaning agents of membrane according to claim 7, it is characterised in that: A group when separating packaging described in step c
Dividing with B component weight ratio is 3~5 ︰ 1.
9. the purposes of the described in any item cleaning agents of membrane of claim 1~6, it is characterised in that: for cleaning filtering spam diafiltration
Film after liquid.
10. the purposes of cleaning agents of membrane according to claim 9, it is characterised in that: the film includes nanofiltration membrane, micro-filtration
At least one of film, coiled reverse osmosis membrane, disc tube reverse osmosis (dt-ro) film or super reverse osmosis membrane.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925888A (en) * | 2019-03-12 | 2019-06-25 | 北京合众清源环境科技有限公司 | A kind of O-ring glues the cleaning method of DTRO diaphragm |
| CN110510778A (en) * | 2019-09-10 | 2019-11-29 | 厦门嘉戎技术股份有限公司 | A kind of landfill leachate preprocess method and device |
| CN110564516A (en) * | 2019-09-10 | 2019-12-13 | 上海丰信环保科技有限公司 | neutral cleaning agent for cleaning MBR system |
| CN110564518A (en) * | 2019-09-16 | 2019-12-13 | 德蓝水技术股份有限公司 | Special cleaning agent for calcium sulfate and preparation method thereof |
| CN110577859A (en) * | 2019-09-25 | 2019-12-17 | 威海翔泽新材料科技有限公司 | Cleaning agent for DTRO (draw texturing yarn) membrane and preparation and use methods thereof |
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| CN116272389A (en) * | 2022-12-26 | 2023-06-23 | 杭州尚善若水环保科技有限公司 | Composite efficient membrane cleaning agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109925888A (en) * | 2019-03-12 | 2019-06-25 | 北京合众清源环境科技有限公司 | A kind of O-ring glues the cleaning method of DTRO diaphragm |
| CN110510778A (en) * | 2019-09-10 | 2019-11-29 | 厦门嘉戎技术股份有限公司 | A kind of landfill leachate preprocess method and device |
| CN110564516A (en) * | 2019-09-10 | 2019-12-13 | 上海丰信环保科技有限公司 | neutral cleaning agent for cleaning MBR system |
| CN110564518A (en) * | 2019-09-16 | 2019-12-13 | 德蓝水技术股份有限公司 | Special cleaning agent for calcium sulfate and preparation method thereof |
| CN110577859A (en) * | 2019-09-25 | 2019-12-17 | 威海翔泽新材料科技有限公司 | Cleaning agent for DTRO (draw texturing yarn) membrane and preparation and use methods thereof |
| CN111961544A (en) * | 2020-07-23 | 2020-11-20 | 湖北优尼科光电技术股份有限公司 | Film layer removing soaking solution applied to glass coating and application method thereof |
| CN113477639A (en) * | 2021-06-25 | 2021-10-08 | 武钢集团昆明钢铁股份有限公司 | Method for cleaning ferric trichloride stains |
| CN113385042A (en) * | 2021-07-14 | 2021-09-14 | 厦门嘉戎技术股份有限公司 | Sulfur scale cleaning agent for reverse osmosis membrane and preparation method thereof |
| CN113385042B (en) * | 2021-07-14 | 2022-05-17 | 厦门嘉戎技术股份有限公司 | Sulfur scale cleaning agent for reverse osmosis membrane and preparation method thereof |
| CN116272389A (en) * | 2022-12-26 | 2023-06-23 | 杭州尚善若水环保科技有限公司 | Composite efficient membrane cleaning agent and preparation method thereof |
| CN116272389B (en) * | 2022-12-26 | 2023-09-08 | 杭州尚善若水环保科技有限公司 | Composite efficient membrane cleaning agent and preparation method thereof |
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Application publication date: 20181207 |