CN108686519A - A kind of back-washing method of ultrafiltration apparatus - Google Patents
A kind of back-washing method of ultrafiltration apparatus Download PDFInfo
- Publication number
- CN108686519A CN108686519A CN201810934985.3A CN201810934985A CN108686519A CN 108686519 A CN108686519 A CN 108686519A CN 201810934985 A CN201810934985 A CN 201810934985A CN 108686519 A CN108686519 A CN 108686519A
- Authority
- CN
- China
- Prior art keywords
- backwash
- ultrafiltration apparatus
- dosing
- water outlet
- ultrafiltration
- 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.)
- Granted
Links
Classifications
-
- 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
- B01D2321/04—Backflushing
-
- 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
Abstract
The invention discloses a kind of back-washing methods of ultrafiltration apparatus, belong to large scale industry water process field of purification, specifically, dosing backwash 1:When chemical anti-row's door water outlet pH reaches 11.0-12.0, record duration and modification time;It impregnates;Backwash is carried out to ultrafiltration apparatus, water outlet reaches neutral backwash and terminates, and records backwash duration, and directly change the step sequence time;Dosing backwash 2:When chemical anti-row's door water outlet pH reaches 1.0-2.0, duration is recorded, and directly change the step sequence time;It impregnates;Backwash is carried out to ultrafiltration apparatus, after water outlet reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;This method reduce the dirts of membrane component to block up rate and degree, effectively increases equipment dependability, and guaranteeing role is played for demineralized water for continuous a large amount of systems;Also it is that this short common problem of water treatment field ultrafiltration apparatus continuous operation period has found an effective solution.
Description
Technical field
The invention belongs to large scale industry water process field of purification, the back-washing methods of specifically a kind of ultrafiltration apparatus.
Background technology
It is influenced by economical activities of mankind and tributary of Yangtze, the littoral all kinds of lives in mainstream, production discharge, In Middle And Lower Reaches of Changjiang River
Surface water organic matter, microorganism and metal ion content are higher.It can be effectively removed in water using the water process mode of ultrafiltration
The impurity such as suspended matter, colloid, organic macromolecule, bacterium, microorganism.
But the impurity being trapped just is deposited in fiber inner surface, the influent side of film can be gradual with the pressure difference of production water side at this time
Increase, after running a period of time, it is necessary to stop filter operation, be backwashed (BW).After repeatedly backwashing, Ke Neng
Film surface adheres to the pollutant for being not easy to rinse out and microorganism, at this time just using containing certain density chemical agent water into
Backwash (CEB) is reinforced in row backwash and immersion, i.e. chemistry, to enhance backwash effect.When ultrafiltration CEB cannot reach recovery ultrafiltration membrane
When the effect of performance, artificial chemistry is needed to clean.
Pollution of Ultrafiltration Membrane can be divided into three classes by we, be respectively:Organic pollution, inorganic matter pollution and microorganism are dirty
Dye.Organic matter is primarily referred to as the fouling membrane caused by the various organic matters in water.It is mainly manifested in film surface pollution layer or
Pore Blocking.Some researches show that natural organic matter is that middle lower-molecular-weight component invades fenestra first to the pollution of ultrafiltration membrane, then
It is that high molecular weight component is blocked in film surface.As a result it indicates, hydrophilic organics hydrophilicity is the principal element for causing flux to decline.It is inorganic
Object pollution is primarily referred to as the fouling membrane caused by suspended material.It is mainly realized by two approach, first, inorganic particulate matter
Matter accumulates in film surface and fenestra;Second is that the particulate matter constantly deposited may form the resistance being gradually increasing.Microorganism
Pollution is primarily referred to as the fouling membrane caused by microorganism itself and its secretion.Have and shows that bacterium can be adhered to film table according to the study
Face simultaneously forms biomembrane, and this biomembrane has bioactivity and influences hydraulic permeability.According to statistics, 2015 and 2016
In winter after end temp rising, cleaning frequency was substantially increased ultrafiltration apparatus, by original four months or so primary cleaning frequencies
It is primary that rate rises to two or three months.
Therefore, using surface water as the water treatment system ultrafiltration apparatus at water inlet water source, membrane component dirt is stifled existing frequent occurrence
As in turn resulting in the reverse osmosis dirt of follow-up system and blocking up, ultrafiltration, reverse osmosis unit are forced carry out chemical cleaning out of service, with extensive
Its multiple producing water ratio and production water quality, this period major part enterprise was at 3 months or so.The frequent clean of membrane component, not only influences
The stable operation of system generates cleaning charge and cleaning waste water, and can cause irreversible negative shadow to the service life of membrane component
It rings.Most of power plant and water process enterprise in this problem long-standing problem industry.The operating parameter of ultrafiltration apparatus is by base
Period factory settings are built, by long-term operation, system pressure, the resistance of ducting, ageing equipment, system overhaul, technological transformation etc.
Factor causes dosing pump output to change, and the height of medicine-chest liquid level has an impact the output of dosing pump, the length of dosing pipeline
Also have an impact to the effect of dosing backwash, this series of unstability for influencing to have resulted in dosing backwash.
Invention content
The present invention is directed to problems of the prior art, and using in apparatus in specific backwash process
The defect that auto-programming carries, the invention discloses a kind of back-washing method of ultrafiltration apparatus, this method belongs to a kind of dynamic tune
A whole and process adjusting.Different from the prior art using backwash dosage as foundation, but with hyperfiltration reverse-rinsing effect be according to
According to continual adjustment solves problems of the prior art.
The invention is realized in this way:
A kind of back-washing method of ultrafiltration apparatus disclosed by the invention is by ultrafiltration apparatus influent COD, TOC and water outlet
COD, TOC, chlorine residue carry out continuing tracking, find under Various Seasonal, different water temperature operating mode CEB backwashes draining step sequence optimal pH and
Chlorine content.When dosing backwash by ultrafiltration apparatus backwash drain pH, chlorine residue slowdown monitoring fast on the spot, check experiment as a result, into
Mobile state adjusts, and eliminates influence of the factors such as dosing pump, backwash water pump, dosing pipeline to dosing backwash effect, is arranged with backwash
Water pH is foundation, and medicament covers each membrane component of ultrafiltration apparatus comprehensively;Backwash after immersion also drains pH with backwash
For foundation, cleaning materials is thoroughly discharged.It is as follows:
Step 1:The ultrafiltration apparatus that will be verified puts into operation, and sample presentation chemical examination ultrafiltration apparatus influent COD, TOC and water outlet COD,
TOC, chlorine residue;
Step 2:By ultrafiltration apparatus Automatic Switch ofProcedures to being manually operated, and survey at chemical anti-row's door water outlet pH value, remaining
Chlorine;It is exchanged with manual operation at this time, that is, does not use the parameter that producer has been fixedly installed, but utilizes the method for the present invention into Mobile state tune
It is whole;
Step 3:Start the step sequence that chemicals dosing plant carries out dosing backwash 1:When chemical anti-row's door water outlet pH reaches 11.0-
When 12.0, duration is recorded, and directly changes the step sequence time;It impregnates, soaking time 600S-650S;To ultrafiltration apparatus into
Row backwash, after water outlet reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;Realization pair adds
1 step sequence of medicine backwash;
Step 4:Start the step sequence that chemicals dosing plant carries out dosing backwash 2:When chemical anti-row's door water outlet pH reaches 1.0-2.0
When, duration is recorded, and directly change the step sequence time;It impregnates, soaking time 600-650s, ultrafiltration apparatus is carried out anti-
It washes, after water outlet reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;It realizes anti-to dosing
Wash 2 step sequences.
Further, the period of dosing backwash 1 and dosing backwash 2 is ten days;First five day carries out the step sequence of dosing backwash 1,
Five days step sequences for carrying out dosing backwash 2 afterwards.
Further, drug used by the dosing backwash 1 is sodium hydroxide and sodium hypochlorite;The dosing backwash
Drug used by 2 is hydrochloric acid.The addition pharmaceutical quantities of dosing backwash 1 and dosing backwash 2 depend entirely on corresponding backwash and go out
Subject to the pH of water;The pH of dosing backwash 1 reaches 11.0-12.0;The pH of dosing backwash 2 reaches 1.0-2.0, reaches required pH then
Stop dosing.
Further, it is six groups that the ultrafiltration apparatus, which is arranged in parallel,.
Further, when the ultrafiltration apparatus backwash, when water outlet is in neutrality, backwash terminates.
Further, there are one back washing devices for ultrafiltration apparatus setting, and share a back washing device.
Further, it is additionally provided with chemicals dosing plant between the ultrafiltration apparatus and back washing device;Ultrafiltration apparatus rear end is provided with
PH monitors table, and pH monitoring tables are set on the backwash drainage pipeline of ultrafiltration apparatus.Pass through chemicals dosing plant and back washing device
Connection, may be implemented the automation of dosing backwash.PH monitoring tables are set simultaneously, and pH monitoring tables are set to every set ultrafiltration apparatus
Backwash drainage pipeline on, pH value when can be to backwash accomplishes to monitor in real time, and next step program is carried out according to the value of pH tables, real
Now automate backwash operation.
Further, the chemicals dosing plant includes backwash hydrochloric acid metering pump, backwash sodium hydroxide metering pump, backwash hypochlorous acid
Sodium metering pump.
The advantageous effect of the present invention and the prior art is:
1) method through the invention is run according to actual operation, and continuous 20 months ultrafiltration apparatus operation may be implemented
Index is in shape, is dynamic change due to carrying out each step sequence time of dosing backwash needed for every set ultrafiltration apparatus, makes
At ultrafiltration, frequently dirty stifled reason is that dosing backwash is not up to effect, singly anti-to control dosing with administration timing of drug in previous technology
Effect is washed, therefore backwash effect must have a greatly reduced quality;The method of the present invention to ultrafiltration apparatus carry out dosing backwash verification, experiment and
Dynamic adjustment solves the zooming puzzlement of ultrafiltration transmembrane pressure, improves equipment dependability, has ensured that thermal power plant unit is a large amount of
Make the ability for demineralized water;
2) method through the invention can ensure that spare ultrafiltration apparatus every ten carries out a CEB1 (dosing backwash everyday
1) and the verification of CEB2 (dosing backwash 2) adjusts work with dynamic, and backwash effect is preferable, thoroughly solves ultrafiltration apparatus and transported in the past
3 months transmembrane pressures of row i.e. more than 100kPa the problem of, improve the utilization rate of ultrafiltration membrane elements to greatest extent, reduce film
Rate is blocked up in the dirt of element and degree is effectively increased and set for undertaking the larger thermal power plant boiler make up water treatment for thermal pressure
Standby reliability plays guaranteeing role for continuous a large amount of systems for demineralized water;Also it is water treatment field ultrafiltration apparatus continuous operation week
Phase, this short common problem had found an effective solution;
3) about 60,000 yuan of drug expenditure is saved from economic aspect due to the use of the method for the present invention, reduces waste liquid
About 1.2 ten thousand tons of discharge capacity reduces 3.6 ten thousand degree of station-service electricity.
Description of the drawings
Fig. 1 is ultrafiltration apparatus dosing backwashing system figure in a kind of embodiment of the back-washing method of ultrafiltration apparatus of the present invention;
Fig. 2 is the transmembrane pressure of ultrafiltration apparatus in the embodiment of the present invention;
Wherein, 1- backwashes hydrochloric acid metering pump, 2- backwash NaOH metering pumps, 3- backwashes add NaOCl metering pumps, 4- backwashes dress
It sets, 5-pH monitors table.
Specific implementation mode
It is clear to keep the purpose of the present invention, technical solution and effect clearer, example is exemplified below to the present invention into one
Step is described in detail.It should be understood that specific implementation described herein is not intended to limit the present invention only to explain the present invention.
Six groups are set as using ultrafiltration apparatus in the present embodiment, as shown in table 1, table 1 is in the prior art according to ultrafiltration instrument
The ultrafiltration method of operation of the fixed setting of device.Wherein by taking #2 ultrafiltration apparatus as an example:
Table 1:The existing ultrafiltration method of operation
| Process sequence | The method of operation | Time (s) |
| 1 | Produce water | 2400 |
| 2 | Backwash (BW) | 40 |
| 3 | Dosing backwash 1 (CEB1) | 165 |
| 4 | It impregnates | 600 |
| 5 | Backwash | 90 |
| 6 | Dosing backwash 2 (CEB2) | 165 |
| 7 | It impregnates | 600 |
| 8 | Backwash | 90 |
Ultrafiltration apparatus is between " RUN ", " backwash ", i.e., when step sequence 1~2 recycles 15 times in table 1, carries out 1 chemistry and reinforce
Backwash (CEB1), the stage add sodium hypochlorite and alkali, mainly for removing the microbial contamination of the generations such as bacterium, algae and having
Machine object pollutes;Ultrafiltration apparatus is between " RUN ", " backwash ", i.e., when step sequence 1~2 recycles 15 times again in table 1, carries out 1 change
It learns and reinforces backwash (CEB2), the stage acid adding, mainly for removal inorganic impurity (Fe, Mn etc.).
Cleaning way with the progress being fixedly installed in the existing instrument in above-mentioned table 1, according to statistics, 2015 and
After end temp rises in winter, cleaning frequency is substantially increased ultrafiltration apparatus in 2016, primary by original four months or so
It is primary that cleaning frequency rises to two or three months.Specific cleaning record is as shown in table 2:
Table 2:2015 and ultrafiltration apparatus chemical cleaning record sheet in 2016
Further, since six sets of ultrafiltration share a backwash pipeline, medicament adds to backwash main pipe, backwash pipeline to every set ultrafiltration
Length it is different in size, if using in the prior art, i.e., the mode in above-mentioned table 1 is cleaned, if dosing pipeline is somewhat small
Dirt is stifled, and medicament cannot infiltrate into each membrane component according to quantity on time, and backwash effect can also have a greatly reduced quality.
Since ultrafiltration apparatus puts into operation in existing technology, existing dosing backwash is always maintained at the preset parameter of producer's setting, ginseng
Several requirements:CEB1 controls fungicide dosage 435L/h, alkali dosage 435L/h, pH value 12, time about 135~300s;
The sour dosage 435L/h of CEB2 controls, pH value 2, time about 135~300s.
These above-mentioned dosages are adjusted and are fixed up according to stroke, but for a long time because of operation hours, when
When pump operation is measured in dosing, vibration is larger, and old range of metering pump cannot be latched, and caused stroke to change with vibration, caused
The output of dosing metering pump with it is different before.
There are one back washing devices for ultrafiltration apparatus setting in the present invention, and share a back washing device.Since ultrafiltration apparatus
It puts into operation, back washing device is also always maintained at the parameter of producer's setting, parameter request:CEB control backwash flow 300t/h, but due to
Equipment is run 10 years as long as, and relatively new pump of contributing is decayed, and in the case where caliber is certain, flow declines, and flow velocity just declines,
The backwash time is certain, medicament cannot all standing, that dosing backwash effect also has a greatly reduced quality certainly.Therefore, the mistake of dosing backwash
Various aspects factor is likely to influence dosing backwash effect in journey, so cannot singly be imitated with administration timing of drug to control dosing backwash
Fruit, and backwash effect is verified on the spot.
Using the method for the present invention, each step sequence time for often covering progress dosing backwash needed for ultrafiltration apparatus is dynamic change.
As shown in FIG. 1, FIG. 1 is ultrafiltration apparatus dosing backwashing system figures in a kind of embodiment of the back-washing method of ultrafiltration apparatus of the present invention;
It is six groups, respectively #1UF, #2UF, #3UF, #4UF, #5UF, #6UF in figure that the ultrafiltration apparatus of the present embodiment, which is arranged in parallel,;It is super
Filtering device setting, there are one back washing devices 4, and share a back washing device 4;It is additionally provided with and adds between ultrafiltration apparatus and back washing device
Medicine device, pH monitor table 5;Chemicals dosing plant includes that backwash hydrochloric acid metering pump 1, backwash NaOH metering pumps 2, backwash add NaOCl to measure
Pump 3, pH monitorings table 5 is set on the back washing device drainage pipeline of every set ultrafiltration apparatus, i.e. this hair in an embodiment of the present invention
PH monitoring tables, energy is all respectively set in the backwash drainpipe of the ultrafiltration apparatus of bright #1UF, #2UF, #3UF, #4UF, #5UF, #6UF
It is enough that pH value of every covering device in backwash is accomplished to monitor in real time, next step program is carried out according to the value of pH tables, realizes automation
Dosing backwash operation.Causing ultrafiltration, frequently dirty stifled reason is that dosing backwash is not up to effect, for this conclusion, from 2016
In November, the present invention to six sets of ultrafiltration apparatus by carrying out dosing backwash verification, experiment and dynamic adjustment work;Specifically such as
Under:
Step 1:The ultrafiltration apparatus that will be verified puts into operation, and sample presentation chemical examination ultrafiltration apparatus influent COD, TOC and water outlet COD,
TOC, chlorine residue;
Step 2:By ultrafiltration apparatus Automatic Switch ofProcedures to being manually operated, and survey at chemical anti-row's door water outlet pH value, remaining
Chlorine;
Step 3:Carry out the step sequence of dosing backwash 1:It is pumped into sodium hydroxide and sodium hypochlorite, when chemical anti-row's door is discharged pH
When reaching 11.0-12.0, duration is recorded, and directly changes the step sequence time;It impregnates, soaking time 600S-650S;To super
It filters device and carries out backwash, after water outlet reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;
It realizes to 1 step sequence of dosing backwash;
Step 4:Carry out the step sequence of dosing backwash 2:It is pumped into hydrochloric acid, when the anti-row's door water outlet pH of chemistry reaches 1.0-2.0, note
The lower duration of record, and directly change the step sequence time;It impregnates, soaking time 600-650s, backwash is carried out to ultrafiltration apparatus, when going out
After water reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;It realizes to 2 step of dosing backwash
Sequence.The period of dosing backwash 1 and dosing backwash 2 is ten days;First five day carries out the step sequence of dosing backwash 1, is added within latter five days
The step sequence of medicine backwash 2.
The results are shown in Table 3, and table 3 is to utilize ultrafiltration apparatus of the present invention and the ultrafiltration method of operation.Wherein set with #2 ultrafiltration
For standby, and as a comparison with table 1:
Table 3:Test result of the method for the present invention by taking #2 ultrafiltration as an example
It was found from the comparison of table 1 and table 3:(CEB1) time of dosing backwash 1 setting of #2 ultrafiltration before is 165s, however
All fail to reach nowadays ultra-filtration water Coloring Time, not talk the water outlet pH times up to standard more, so dosage cannot be up to standard,
Ultrafiltration transmembrane pressure is resulted in rise quickly;
Dosing backwash 2 (CEB2) setting of #2 ultrafiltration before is 90s, but as can be seen that 90s is from the data of table 3
Residuals inside ultrafiltration apparatus can not possibly be completely exhausted out, so producing water on this basis, undoubtedly be made the matter worse.Cause
This, using the method for the invention realizes a kind of adjustment of dynamic and a process adjustings.Be not with backwash dosage be according to
According to, but using hyperfiltration reverse-rinsing effect as foundation, with five days for a period, continual adjustment eliminates above-mentioned a variety of causes
The ineffective phenomenon of the dosing backwash of appearance.
Using the method for the present invention, by experiment more than a year and lasting adjustment, since in November, 2016 so far,
Continuous 20 months ultrafiltration apparatus operating index are constantly in kilter, and transmembrane pressure does not occur apparent rise phenomenon, such as Fig. 2 institutes
Show, shown in Fig. 2 is the transmembrane pressure of ultrafiltration apparatus.From figure 2 it can be seen that the transmembrane pressure of ultrafiltration apparatus is in 5-7 months
There is a process for rising, because temperature increases, microbial reproduction speed becomes faster, so in a short time can be on the rise, but
It is that will soon solve the problems, such as microbial contamination, and very one section long afterwards since we take the strategy of dynamic adjustment
Good control can be obtained in time.(it is because pipeline lining plastic falls off blocking that #6 ultrafiltration pressure differences are abnormal)
Economic aspect, by taking a season cleans a set of ultrafiltration as an example, the six sets of ultrafiltration apparatus of cleaning in 1 year need 24 times, every every time
Set ultrafiltration cleaning drug expenditure is about 1500 yuan, discharge waste liquid amount is about 300 tons.It does not clean within existing 20 months, saves drug expenditure
About 60,000 yuan;Discharging of waste liquid expense can be saved according to 6.08 yuan/ton of discharge price of waste water by reducing about 1.2 ten thousand tons of waste liquid discharging amount
With about 7.3 ten thousand yuan;According to the rated power of flushing water pump and cleaning case heating rod, it can calculate and reduce station-service electricity about 3.6 ten thousand
Degree.
The pollution of film is the process of a gradual change, is developed as one pleases, and damages membrane component at last or reduces its performance.My company adopts
The technological innovation of this set dynamic adjustment has formed our a set of having of manageing it by groping and put into practice more than a year
The method of operation of effect.Coordinate rational operational management and supervision, allows ultrafiltration to clean frequent problem and be addressed, ultrafiltration apparatus
Operating status is good, extends the run time of ultrafiltration apparatus to greatest extent in the case where operating index is up to standard, reduces
The frequency of artificial chemistry cleaning, improves the economy of ultrafiltration operation.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as the present invention's
Protection domain.
Claims (9)
1. a kind of back-washing method of ultrafiltration apparatus, which is characterized in that steps are as follows:
Step 1:The ultrafiltration apparatus that will be verified puts into operation, and sample presentation chemical examination ultrafiltration apparatus influent COD, TOC and water outlet COD, TOC,
Chlorine residue;
Step 2:By ultrafiltration apparatus Automatic Switch ofProcedures to manual operation, and pH value, chlorine residue are surveyed at chemical anti-row's door water outlet;
Step 3:Start the step sequence that chemicals dosing plant carries out dosing backwash 1:When chemical anti-row's door water outlet pH reaches 11.0-12.0,
Duration is recorded, and directly changes the step sequence time;It impregnates, soaking time 600S-650S;Backwash is carried out to ultrafiltration apparatus,
After water outlet reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;It realizes to dosing backwash 1
Walk sequence;
Step 4:Start the step sequence that chemicals dosing plant carries out dosing backwash 2:When chemical anti-row's door water outlet pH reaches 1.0-2.0, note
The lower duration of record, and directly change the step sequence time;It impregnates, soaking time 600-650s, backwash is carried out to ultrafiltration apparatus, when going out
After water reaches neutrality, backwash terminates, and records backwash duration, and directly changes the step sequence time;It realizes to 2 step of dosing backwash
Sequence.
2. a kind of back-washing method of ultrafiltration apparatus according to claim 1, which is characterized in that dosing backwash 1 and dosing
The period of backwash 2 is ten days;First five day carries out the step sequence of dosing backwash 1, the latter five days step sequences for carrying out dosing backwash 2.
3. a kind of back-washing method of ultrafiltration apparatus according to claim 2, which is characterized in that 1 institute of dosing backwash
The drug used is sodium hydroxide and sodium hypochlorite;Drug used by the dosing backwash 2 is hydrochloric acid.
4. a kind of back-washing method of ultrafiltration apparatus according to claim 1, which is characterized in that the ultrafiltration apparatus is in parallel
It is set as six groups.
5. a kind of back-washing method of ultrafiltration apparatus according to claim 4, which is characterized in that the ultrafiltration apparatus dosing
When backwash, when water outlet reaches required pH value, i.e., dosing backwash 1 when pH reach 11.0-12.0;Dosing backwash 2pH reaches
1.0-2.0, dosing backwash terminate.
6. a kind of back-washing method of ultrafiltration apparatus according to claim 4, which is characterized in that the ultrafiltration apparatus backwash
When, when water outlet is in neutrality, backwash terminates.
7. a kind of back-washing method of ultrafiltration apparatus according to claim 4, which is characterized in that six groups of ultrafiltration apparatus
There are one back washing devices for setting, and share a back washing device.
8. a kind of back-washing method of ultrafiltration apparatus according to claim 1, which is characterized in that the ultrafiltration apparatus rear end
PH monitoring tables are provided with, and pH monitoring tables are set on the backwash drainage pipeline of ultrafiltration apparatus.
9. a kind of back-washing method of ultrafiltration apparatus according to claim 1, which is characterized in that the chemicals dosing plant includes
Backwash hydrochloric acid metering pump, backwash sodium hydroxide metering pump, backwash sodium hypochlorite metering pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934985.3A CN108686519B (en) | 2018-08-16 | 2018-08-16 | Backwashing method of ultrafiltration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934985.3A CN108686519B (en) | 2018-08-16 | 2018-08-16 | Backwashing method of ultrafiltration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108686519A true CN108686519A (en) | 2018-10-23 |
| CN108686519B CN108686519B (en) | 2020-11-27 |
Family
ID=63841682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934985.3A Active CN108686519B (en) | 2018-08-16 | 2018-08-16 | Backwashing method of ultrafiltration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108686519B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181773A (en) * | 2021-04-25 | 2021-07-30 | 蒲城清洁能源化工有限责任公司 | Sequential control method for ultrafiltration water treatment |
| CN114632424A (en) * | 2022-04-28 | 2022-06-17 | 华能威海发电有限责任公司 | Acid-base comprehensive compensation system and method for chemical cleaning of reverse osmosis membrane |
Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH119973A (en) * | 1997-06-26 | 1999-01-19 | Ebara Corp | Method for filtration back-washing of membrane module for turbidity removal |
| JP2002361054A (en) * | 2001-06-12 | 2002-12-17 | Nkk Corp | Method for washing membrane filtration apparatus |
| JP2004209478A (en) * | 2004-03-31 | 2004-07-29 | Ebara Corp | Method and apparatus for backwashing membrane module for removing turbidness |
| JP2005246239A (en) * | 2004-03-04 | 2005-09-15 | Ebara Corp | Membrane filter apparatus and its operation method |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| CN101138704A (en) * | 2007-06-12 | 2008-03-12 | 山西太钢不锈钢股份有限公司 | Processing method of filter-core of osmosis- reverse system |
| CN101224391A (en) * | 2007-10-17 | 2008-07-23 | 中国铝业股份有限公司 | Water curing reverse osmosis membrane chemical cleaning method |
| CN101773787A (en) * | 2009-12-31 | 2010-07-14 | 南京工业大学 | Membrane fouling and cleaning method of brine refining process by membrane method |
| CN102049198A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | Method for flushing reverse osmosis membrane |
| CN102294174A (en) * | 2011-08-11 | 2011-12-28 | 山西太钢不锈钢股份有限公司 | Chemical washing method of reverse osmosis |
| CN102698606A (en) * | 2012-03-20 | 2012-10-03 | 山西太钢不锈钢股份有限公司 | Hyperfiltration backwashing method |
| CN102773022A (en) * | 2012-07-30 | 2012-11-14 | 吉林省电力有限公司电力科学研究院 | Cross-flow ultrafiltration membrane backwashing method |
| CN102814123A (en) * | 2012-09-12 | 2012-12-12 | 西安兴仪启动发电试运有限公司 | Reverse osmosis membrane chemical cleaning method |
| CN103949163A (en) * | 2014-04-25 | 2014-07-30 | 山西太钢不锈钢股份有限公司 | Method for cleaning immersed ultrafiltration membrane in wastewater reuse |
| US20140238936A1 (en) * | 2013-02-28 | 2014-08-28 | Genesys International Limited | Reverse osmosis and nanofiltration membrane cleaning |
| CN104307241A (en) * | 2014-11-14 | 2015-01-28 | 黄石市浩运矿山设备节能开发有限公司 | Cleaning method of ceramic filter |
| CN104474904A (en) * | 2014-11-20 | 2015-04-01 | 无锡市百顺机械厂 | Film washing method |
| CN105214506A (en) * | 2015-10-23 | 2016-01-06 | 邯钢集团邯宝钢铁有限公司 | The high-efficiency washing method of milipore filter in the process of Metallurgical Waste Water advanced desalination |
| CN105311967A (en) * | 2015-11-20 | 2016-02-10 | 湖北科亮生物环保科技有限公司 | Method for efficient cleaning of reverse osmosis membrane |
| CN105597549A (en) * | 2016-02-14 | 2016-05-25 | 大唐内蒙古多伦煤化工有限责任公司 | Device and method for cleaning nanofiltration membrane |
| CN105688680A (en) * | 2016-04-08 | 2016-06-22 | 北京今大禹环境技术股份有限公司 | Washing method for anti-osmosis film elements |
| 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 |
| CN106512744A (en) * | 2016-09-24 | 2017-03-22 | 合肥信达膜科技有限公司 | Method for cleaning reverse osmosis membrane element |
| CN107174959A (en) * | 2017-04-24 | 2017-09-19 | 如东南天农科化工有限公司 | A kind of method for rapidly and efficiently cleaning UF films |
| CN107185410A (en) * | 2017-06-02 | 2017-09-22 | 青岛百发海水淡化有限公司 | A kind of cleaning method of desalinization reverse osmosis membrane |
| CN107261853A (en) * | 2017-08-20 | 2017-10-20 | 合肥信达膜科技有限公司 | A kind of cleaning method of reverse osmosis membrane |
| CN107297147A (en) * | 2017-07-19 | 2017-10-27 | 湖南军信环保股份有限公司 | The cleaning method of milipore filter |
| CN107398185A (en) * | 2017-07-19 | 2017-11-28 | 湖南军信环保股份有限公司 | A kind of chemical cleaning method of milipore filter |
| CN108176229A (en) * | 2017-12-01 | 2018-06-19 | 大同煤矿集团有限责任公司 | Ultra-filtration element groundwater pollution control in water process |
| CN108187501A (en) * | 2018-01-04 | 2018-06-22 | 京能十堰热电有限公司 | A kind of cleaning method of reverse osmosis membrane system organic pollution |
-
2018
- 2018-08-16 CN CN201810934985.3A patent/CN108686519B/en active Active
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH119973A (en) * | 1997-06-26 | 1999-01-19 | Ebara Corp | Method for filtration back-washing of membrane module for turbidity removal |
| JP2002361054A (en) * | 2001-06-12 | 2002-12-17 | Nkk Corp | Method for washing membrane filtration apparatus |
| JP2005246239A (en) * | 2004-03-04 | 2005-09-15 | Ebara Corp | Membrane filter apparatus and its operation method |
| JP2004209478A (en) * | 2004-03-31 | 2004-07-29 | Ebara Corp | Method and apparatus for backwashing membrane module for removing turbidness |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| CN101138704A (en) * | 2007-06-12 | 2008-03-12 | 山西太钢不锈钢股份有限公司 | Processing method of filter-core of osmosis- reverse system |
| CN101224391A (en) * | 2007-10-17 | 2008-07-23 | 中国铝业股份有限公司 | Water curing reverse osmosis membrane chemical cleaning method |
| CN102049198A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | Method for flushing reverse osmosis membrane |
| CN101773787A (en) * | 2009-12-31 | 2010-07-14 | 南京工业大学 | Membrane fouling and cleaning method of brine refining process by membrane method |
| CN102294174A (en) * | 2011-08-11 | 2011-12-28 | 山西太钢不锈钢股份有限公司 | Chemical washing method of reverse osmosis |
| CN102698606A (en) * | 2012-03-20 | 2012-10-03 | 山西太钢不锈钢股份有限公司 | Hyperfiltration backwashing method |
| CN102773022A (en) * | 2012-07-30 | 2012-11-14 | 吉林省电力有限公司电力科学研究院 | Cross-flow ultrafiltration membrane backwashing method |
| CN102814123A (en) * | 2012-09-12 | 2012-12-12 | 西安兴仪启动发电试运有限公司 | Reverse osmosis membrane chemical cleaning method |
| US20140238936A1 (en) * | 2013-02-28 | 2014-08-28 | Genesys International Limited | Reverse osmosis and nanofiltration membrane cleaning |
| CN103949163A (en) * | 2014-04-25 | 2014-07-30 | 山西太钢不锈钢股份有限公司 | Method for cleaning immersed ultrafiltration membrane in wastewater reuse |
| CN104307241A (en) * | 2014-11-14 | 2015-01-28 | 黄石市浩运矿山设备节能开发有限公司 | Cleaning method of ceramic filter |
| CN104474904A (en) * | 2014-11-20 | 2015-04-01 | 无锡市百顺机械厂 | Film washing method |
| 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 |
| CN105214506A (en) * | 2015-10-23 | 2016-01-06 | 邯钢集团邯宝钢铁有限公司 | The high-efficiency washing method of milipore filter in the process of Metallurgical Waste Water advanced desalination |
| CN105311967A (en) * | 2015-11-20 | 2016-02-10 | 湖北科亮生物环保科技有限公司 | Method for efficient cleaning of reverse osmosis membrane |
| CN105597549A (en) * | 2016-02-14 | 2016-05-25 | 大唐内蒙古多伦煤化工有限责任公司 | Device and method for cleaning nanofiltration membrane |
| CN105688680A (en) * | 2016-04-08 | 2016-06-22 | 北京今大禹环境技术股份有限公司 | Washing method for anti-osmosis film elements |
| CN106512744A (en) * | 2016-09-24 | 2017-03-22 | 合肥信达膜科技有限公司 | Method for cleaning reverse osmosis membrane element |
| CN107174959A (en) * | 2017-04-24 | 2017-09-19 | 如东南天农科化工有限公司 | A kind of method for rapidly and efficiently cleaning UF films |
| CN107185410A (en) * | 2017-06-02 | 2017-09-22 | 青岛百发海水淡化有限公司 | A kind of cleaning method of desalinization reverse osmosis membrane |
| CN107297147A (en) * | 2017-07-19 | 2017-10-27 | 湖南军信环保股份有限公司 | The cleaning method of milipore filter |
| CN107398185A (en) * | 2017-07-19 | 2017-11-28 | 湖南军信环保股份有限公司 | A kind of chemical cleaning method of milipore filter |
| CN107261853A (en) * | 2017-08-20 | 2017-10-20 | 合肥信达膜科技有限公司 | A kind of cleaning method of reverse osmosis membrane |
| CN108176229A (en) * | 2017-12-01 | 2018-06-19 | 大同煤矿集团有限责任公司 | Ultra-filtration element groundwater pollution control in water process |
| CN108187501A (en) * | 2018-01-04 | 2018-06-22 | 京能十堰热电有限公司 | A kind of cleaning method of reverse osmosis membrane system organic pollution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181773A (en) * | 2021-04-25 | 2021-07-30 | 蒲城清洁能源化工有限责任公司 | Sequential control method for ultrafiltration water treatment |
| CN114632424A (en) * | 2022-04-28 | 2022-06-17 | 华能威海发电有限责任公司 | Acid-base comprehensive compensation system and method for chemical cleaning of reverse osmosis membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108686519B (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104817167B (en) | A kind of precipitation position back-flushing method for UBAF technique | |
| CN102674590A (en) | Method for treating and recycling heavy metal wastewater by double-membrane process | |
| CN101890300B (en) | Integrated ultrafiltration membrane water treatment device integrating membrane fiber detection | |
| CN102814123A (en) | Reverse osmosis membrane chemical cleaning method | |
| CN112403279A (en) | Ceramic membrane filtering device and air-water combined backwashing method thereof | |
| CN108686519A (en) | A kind of back-washing method of ultrafiltration apparatus | |
| Zupančič et al. | An evaluation of industrial ultrafiltration systems for surface water using fouling indices as a performance indicator | |
| CN202430070U (en) | Heavy metal wastewater treatment and recycling equipment using two-membrane process | |
| CN204752397U (en) | Papermaking advanced waste treatment system | |
| CN102249372A (en) | Immersed ultrafiltration and device and preparation system of pure water | |
| CN110193288A (en) | A kind of restorative chemical cleaning method of unmanned automatic on-line of submerged ultrafiltration | |
| CN104140172B (en) | A kind of Seawater desalination pretreatment method | |
| CN202658029U (en) | System for recycling acid-containing wastewater in process of welding rod production | |
| CN107824048A (en) | A kind of sewage-treatment plant and its operation method for improving membrane filtration system performance | |
| CN201245518Y (en) | Mobile integrated sewage dual membrane process sewage treating apparatus | |
| CN217757076U (en) | Waste water reuse of reclaimed water processing system | |
| CN203513392U (en) | Circular treatment device of papermaking white water | |
| CN204981398U (en) | Integrated equipment that technology drainage of running water water factory was retrieved | |
| CN207002442U (en) | A kind of water cleaning systems with backwashing function | |
| JPH06238136A (en) | Method for washing filter membrane module | |
| CN211734053U (en) | Be used for iron oxide red waste water treatment to use device | |
| CN104071926B (en) | A kind of V-type filter tank | |
| CN210786917U (en) | Reverse osmosis device with reverse flow flushing function | |
| CN208327725U (en) | A kind of equally distributed artificial swamp of sewage | |
| CN112919688A (en) | Device and method for transforming town water plant by ultrafiltration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |