CN109925888A - A kind of O-ring glues the cleaning method of DTRO diaphragm - Google Patents
A kind of O-ring glues the cleaning method of DTRO diaphragm Download PDFInfo
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- CN109925888A CN109925888A CN201910185991.8A CN201910185991A CN109925888A CN 109925888 A CN109925888 A CN 109925888A CN 201910185991 A CN201910185991 A CN 201910185991A CN 109925888 A CN109925888 A CN 109925888A
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Abstract
The invention discloses the cleaning methods that a kind of O-ring glues DTRO diaphragm, belong to DT technical field of membrane, when including the following steps: that film column breaks down, dismantle film column in time and film column is placed on maintenance frock platform；By the torque pine of film column to 85Nm hereinafter, maintenance frock platform is good by piping connection with film column；The Na of water, 8%~10% is produced with the tap water or film of no chlorine residue2S prepares the neopelex that alkaline cleaning fluid one, 0.08%~0.15%NaOH and mass fraction are 0.02%~0.03% and prepares the interval of alkaline cleaning fluid two flushing membrane column, sampling valve sample detection pH is opened every 3~8min when flushing, stop rinsing when concentrated water pH is 9~10, cleaning is completed, O-ring, diaphragm separation.Present invention process method is simple, easy to operate, after correct operating procedure, cleaning step, is able to solve the problem of diaphragm is with O-ring adhesion, and diaphragm is cleaned up.
Description
Technical field
The present invention relates to the cleaning methods that DT membrane technology more particularly to a kind of O-ring glue DTRO diaphragm.
Background technique
DT membrane technology, that is, dish tubular type membrane technology is divided into DTRO (disc tube reverse osmosis (dt-ro)), DTNF (nanofiltration of dish tubular type), DTUF
(ultrafiltration of dish tubular type) three categories, are a kind of membrane separation assemblies.Dish tubular type membrane technology is mainly used in the filtering point of high concentration feed liquid
From.
DT membrane technology modular construction: dish tubular membrane component is mainly by filtration membrane, flow guiding disc, center pull rod, shell, both ends
The components such as the various sealing elements of flange and attachment bolt composition.Filtration membrane and flow guiding disc are stacked together, with center pull rod and
End cap flange is fixed, and is then placed in pressure casing, just forms a dish tubular membrane component.
DT membrane technology work principle of filter: feed liquid is led by entering bottom by flow-guiding channel behind the gap between membrane stack and shell
In flow table, processed liquid flows quickly through filter membrane with shortest distance, then reverses to another film surface for 180 °, then be flowed into
Next filtration membrane to be formed by flow guiding disc circumference in film surface to circle center, then arrives circumference, then arrives the tangential of circle center
Filter is flowed through, concentrate is finally flowed out from feed end flange.While material flow is through filter membrane, permeate passes through central collection tube
Constantly discharge.Concentrate is isolated with permeate by the O-ring seal being installed on flow guiding disc.
During handling sewage with DTRO, O-ring seal and diaphragm adhesion surface can also retain DTRO system and produce in water
A large amount of whiteness, pH 6.9, have very strong adsorptivity, into RO after be rejected by and be adsorbed on film surface, it is O-shaped
Sealing ring and diaphragm adhesion are the important problems faced in DTRO film column maintenance process, inevitable O-shaped sealing especially careful
The phenomenon that enclosing adhesion damage diaphragm；In the directly processing of infiltration stoste, the DT diaphragm service life is generally 3 years or more reachable, if film
Piece damage, replacement cause unnecessary economic loss, also influence sewage treating efficiency, and therefore, O-ring seal adhesion damages diaphragm
It is current urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide the cleaning methods that a kind of O-ring glues DTRO diaphragm, by correct operating procedure, clearly
After washing step, it is able to solve the problem of diaphragm is with O-ring adhesion, and diaphragm is cleaned up.
Technical scheme is as follows:
O-ring glues the cleaning method of DTRO diaphragm, which comprises the steps of:
1) when, film column breaks down, film column is dismantled in time and film column is placed on maintenance frock platform, maintains environment temperature
Not less than 12 DEG C；
2), by the torque pine of film column to 85Nm hereinafter, maintenance frock platform and film column is good by piping connection；
3) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling inspection every 3~8min when flushing
Concentrated water conductance is surveyed, when concentrated water conductivity is less than 12000us/cm, stops rinsing；
4), the Na for being 8%~10% with mass fraction2S and RO produce water and prepare alkaline cleaning fluid one, adjust pH value be 12~
13.5；
5), temperature maintains 25~30 DEG C, cleans 30~90min using alkaline cleaning fluid one, flushing pressure 3~
4bar, when cleaning, first 5~15min flow velocity is adjusted to the 1/3 of design maximum flow velocity；Second 5~15min flow velocity is adjusted
To the 1/2 of design maximum flow velocity, final flow rate, which is adjusted to the 3/4 of design maximum flow velocity, to be terminated to cleaning；After cleaning impregnate 30~
90min；Then recycling cleaning 15min~45min, impregnates 20min~45min；
6), 15~45min of water flushing membrane column is produced with the tap water or film of no chlorine residue；
It 7) is, 0.08%~0.15%NaOH with mass fraction and dodecyl that mass fraction is 0.02%~0.03%
Benzene sulfonic acid sodium salt prepares alkaline cleaning fluid two, and adjusting pH is 11~12；
8), temperature maintains 25~30 DEG C, using two 20~45min of circulation flushing of alkaline cleaning fluid, flushing pressure 4~
5bar, when cleaning, first 5~10min flow velocity is adjusted to the 1/4 of design maximum flow velocity；Second 5~10min flow velocity is adjusted
To the 1/2 of design maximum flow velocity；Third 5~10min flow velocity is adjusted to the 3/4 of design maximum flow velocity, and last 5~15min flows
Velocity modulation section is to design maximum flow velocity；
9), then film column is immersed in 3~6h in alkaline cleaning fluid two, and 1.0~3.0h is rinsed in finally recycling, and discharge is rinsed
Liquid；
10) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling every 3~8min when flushing
PH is detected, stops rinsing when concentrated water pH is 9~10, cleaning is completed, O-ring, diaphragm separation.
Compared with prior art, the present invention has the advantage that
1, the present invention is suitable for garbage percolation liquid treatment membrane system, includes pretreatment system, level-one three-stage DTRO membrane system
System and second level RO membranous system, during processing, producing water for discovery DTRO system has a large amount of whiteness, pH 6.9, tool
Have very strong adsorptivity, into RO after be rejected by and be adsorbed on film surface, pickling/alkali cleaning side of this whiteness routine
After method cleaning, without any effect, alkaline cleaning fluid one can be with the Rapid Cleaning substance, while reducing cleaning agent expense, again
Cleaning efficiency can be improved, solves diaphragm and O-ring seal adhesion convenient for further；
2, present invention process method is simple, easy to operate, after correct operating procedure, cleaning step, is able to solve film
The problem of piece and O-ring adhesion, and diaphragm is cleaned up.
Specific embodiment:
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one:
O-ring glues the cleaning method of DTRO diaphragm, which comprises the steps of:
1) when, film column breaks down, film column is dismantled in time and film column is placed on maintenance frock platform, maintains environment temperature
Not less than 12 DEG C；
2), by the torque pine of film column to 85Nm hereinafter, maintenance frock platform and film column is good by piping connection；
3) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling inspection every 3~8min when flushing
Concentrated water conductance is surveyed, when concentrated water conductivity is less than 12000us/cm, stops rinsing；
4), the Na for being 8%~10% with mass fraction2S and RO produce water and prepare alkaline cleaning fluid one, adjust pH value be 12~
13.5；
5), temperature maintains 25~30 DEG C, cleans 30~90min using alkaline cleaning fluid one, flushing pressure 3~
4bar, when cleaning, first 5~15min flow velocity is adjusted to the 1/3 of design maximum flow velocity；Second 5~15min flow velocity is adjusted
To the 1/2 of design maximum flow velocity, final flow rate, which is adjusted to the 3/4 of design maximum flow velocity, to be terminated to cleaning；After cleaning impregnate 30~
90min；Then recycling cleaning 15min~45min, impregnates 20min~45min；
6), 15~45min of water flushing membrane column is produced with the tap water or film of no chlorine residue；
It 7) is, 0.08%~0.15%NaOH with mass fraction and dodecyl that mass fraction is 0.02%~0.03%
Benzene sulfonic acid sodium salt prepares alkaline cleaning fluid two, and adjusting pH is 11~12；
8), temperature maintains 25~30 DEG C, using two 20~45min of circulation flushing of alkaline cleaning fluid, flushing pressure 4~
5bar, when cleaning, first 5~10min flow velocity is adjusted to the 1/4 of design maximum flow velocity；Second 5~10min flow velocity is adjusted
To the 1/2 of design maximum flow velocity；Third 5~10min flow velocity is adjusted to the 3/4 of design maximum flow velocity, and last 5~15min flows
Velocity modulation section is to design maximum flow velocity；
9), then film column is immersed in 3~6h in alkaline cleaning fluid two, and 1.0~3.0h is rinsed in finally recycling, and discharge is rinsed
Liquid；
10) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling every 3~8min when flushing
PH is detected, stops rinsing when concentrated water pH is 9~10, cleaning is completed, O-ring, diaphragm separation.
Wash result: O-ring, diaphragm be not damaged, surface noresidue, O-ring, diaphragm separation.
Embodiment two:
O-ring glues the cleaning method of DTRO diaphragm, includes the following steps:
1) when, film column breaks down, film column is dismantled in time and film column is placed on maintenance frock platform, maintains environment temperature
Not less than 15 DEG C；
2), by the torque pine of film column to 80Nm hereinafter, maintenance frock platform and film column is good by piping connection；
3) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling inspection every 4~6min when flushing
Concentrated water conductance is surveyed, when concentrated water conductivity is less than 10000us/cm, stops rinsing；
4), the Na for being 8.5%~9.5% with mass fraction2S and RO produces water and prepares alkaline cleaning fluid one, adjusts pH value and is
12.5~13；
5), temperature maintains 25~30 DEG C, cleans 45~75min using alkaline cleaning fluid one, flushing pressure 3~
4bar, when cleaning, first 8~12min flow velocity is adjusted to the 1/3 of design maximum flow velocity；Second 8~12min flow velocity is adjusted
To the 1/2 of design maximum flow velocity, final flow rate, which is adjusted to the 3/4 of design maximum flow velocity, to be terminated to cleaning；After cleaning impregnate 45~
75min；Then recycling cleaning 25min~35min, impregnates 25min~40min；
6), 20~35min of water flushing membrane column is produced with the tap water or film of no chlorine residue；
It 7) is, 0.09%~0.12%NaOH with mass fraction and dodecane that mass fraction is 0.022%~0.028%
Base benzene sulfonic acid sodium salt prepares alkaline cleaning fluid two, and adjusting pH is 11~12；
8), temperature maintains 25~30 DEG C, using two 25~35min of circulation flushing of alkaline cleaning fluid, flushing pressure 4~
5bar, when cleaning, first 6~9min flow velocity is adjusted to the 1/4 of design maximum flow velocity；Second 6~9min flow velocity adjusting is arrived
The 1/2 of design maximum flow velocity；Third 6~9min flow velocity is adjusted to the 3/4 of design maximum flow velocity, last 6~12min flow velocity tune
Save design maximum flow velocity；
9), then film column is immersed in 3.5~5h in alkaline cleaning fluid two, and 1.5~2.5h, discharge punching are rinsed in finally recycling
Washing lotion；
10) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sampling every 4~6min when flushing
PH is detected, stops rinsing when concentrated water pH is 9~10, cleaning is completed, O-ring, diaphragm separation.
Wash result: O-ring, diaphragm be not damaged, surface noresidue, O-ring, diaphragm separation.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features, it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (1)
1. the cleaning method that a kind of O-ring glues DTRO diaphragm, which comprises the steps of:
1) when, film column breaks down, film column is dismantled in time and film column is placed on maintenance frock platform, maintains environment temperature not low
In 12 DEG C；
2), by the torque pine of film column to 85Nm hereinafter, maintenance frock platform and film column is good by piping connection；
3) water flushing membrane column, is produced with the tap water or film of no chlorine residue, and it is dense every 3~8min to open sampling valve sample detection when flushing
Water power is led, and when concentrated water conductivity is less than 12000us/cm, stops rinsing；
4), the Na for being 8%~10% with mass fraction2S and RO produces water and prepares alkaline cleaning fluid one, and adjusting pH value is 12~13.5；
5), temperature maintains 25~30 DEG C, cleans 30~90min using alkaline cleaning fluid one, flushing pressure is in 3~4bar, clearly
When washing, first 5~15min flow velocity is adjusted to the 1/3 of design maximum flow velocity；Second 5~15min flow velocity adjusting is set to maximum
The 1/2 of flow velocity is counted, final flow rate, which is adjusted to the 3/4 of design maximum flow velocity, to be terminated to cleaning；30~90min is impregnated after cleaning；So
Recycling cleaning 15min~45min afterwards, impregnates 20min~45min；
6), 15~45min of water flushing membrane column is produced with the tap water or film of no chlorine residue；
It 7) is, 0.08%~0.15%NaOH with mass fraction and detergent alkylate sulphur that mass fraction is 0.02%~0.03%
Sour sodium prepares alkaline cleaning fluid two, and adjusting pH is 11~12；
8), temperature maintains 25~30 DEG C, using two 20~45min of circulation flushing of alkaline cleaning fluid, flushing pressure 4~
5bar, when cleaning, first 5~10min flow velocity is adjusted to the 1/4 of design maximum flow velocity；Second 5~10min flow velocity is adjusted
To the 1/2 of design maximum flow velocity；Third 5~10min flow velocity is adjusted to the 3/4 of design maximum flow velocity, and last 5~15min flows
Velocity modulation section is to design maximum flow velocity；
9), then film column is immersed in 3~6h in alkaline cleaning fluid two, and finally 1.0~3.0h is rinsed in recycling, and flushing liquor is discharged；
10) water flushing membrane column, is produced with the tap water or film of no chlorine residue, opens sampling valve sample detection every 3~8min when flushing
PH stops rinsing when concentrated water pH is 9~10, and cleaning is completed, O-ring, diaphragm separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910185991.8A CN109925888B (en) | 2019-03-12 | 2019-03-12 | Cleaning method for O-shaped ring bonded DTRO membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910185991.8A CN109925888B (en) | 2019-03-12 | 2019-03-12 | Cleaning method for O-shaped ring bonded DTRO membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109925888A true CN109925888A (en) | 2019-06-25 |
| CN109925888B CN109925888B (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910185991.8A Active CN109925888B (en) | 2019-03-12 | 2019-03-12 | Cleaning method for O-shaped ring bonded DTRO membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005074386A (en) * | 2003-09-03 | 2005-03-24 | Toray Ind Inc | Method for preparing clear water |
| CN106957089A (en) * | 2017-04-17 | 2017-07-18 | 同济大学 | A kind of twice-modified method of discarded reverse osmosis membrane available for treatment of dyeing wastewater |
| CN108854561A (en) * | 2017-11-15 | 2018-11-23 | 上海屹屹环境科技有限公司 | A kind of reverse osmosis cleaning agent |
| CN108939926A (en) * | 2018-09-03 | 2018-12-07 | 成都水医生化学品科技有限责任公司 | Cleaning agents of membrane and its preparation and application |
| CN208471618U (en) * | 2018-05-18 | 2019-02-05 | 南京环美科技股份有限公司 | A kind of landfill leachate DTRO cleaning equipment |
| CN109423361A (en) * | 2017-08-24 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of cleaning agent and its application method of high sulfur Gas Fields sewage collecting pipeline |
-
2019
- 2019-03-12 CN CN201910185991.8A patent/CN109925888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005074386A (en) * | 2003-09-03 | 2005-03-24 | Toray Ind Inc | Method for preparing clear water |
| CN106957089A (en) * | 2017-04-17 | 2017-07-18 | 同济大学 | A kind of twice-modified method of discarded reverse osmosis membrane available for treatment of dyeing wastewater |
| CN109423361A (en) * | 2017-08-24 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of cleaning agent and its application method of high sulfur Gas Fields sewage collecting pipeline |
| CN108854561A (en) * | 2017-11-15 | 2018-11-23 | 上海屹屹环境科技有限公司 | A kind of reverse osmosis cleaning agent |
| CN208471618U (en) * | 2018-05-18 | 2019-02-05 | 南京环美科技股份有限公司 | A kind of landfill leachate DTRO cleaning equipment |
| CN108939926A (en) * | 2018-09-03 | 2018-12-07 | 成都水医生化学品科技有限责任公司 | Cleaning agents of membrane and its preparation and application |
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