CN207347292U - A kind of high-recovery reverse osmosis desalination plant - Google Patents
A kind of high-recovery reverse osmosis desalination plant Download PDFInfo
- Publication number
- CN207347292U CN207347292U CN201721153228.XU CN201721153228U CN207347292U CN 207347292 U CN207347292 U CN 207347292U CN 201721153228 U CN201721153228 U CN 201721153228U CN 207347292 U CN207347292 U CN 207347292U
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- water
- osmosis unit
- flushing
- desalination plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 113
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000011010 flushing procedure Methods 0.000 claims abstract description 51
- 239000003814 drug Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 16
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000008213 purified water Substances 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000009991 scouring Methods 0.000 claims description 3
- 230000003487 anti-permeability effect Effects 0.000 claims 1
- 239000012267 brine Substances 0.000 claims 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 9
- 238000000746 purification Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010061926 Purulence Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007785 strong electrolyte Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model belongs to technical field of water treatment equipment, discloses a kind of high-recovery reverse osmosis desalination plant, including：Raw water water inlet pipe, purifier, cleaning device and desalted water outlet pipe；Purifier includes being sequentially connected pre-filtering device, scale preventative chemicals dosing plant, cartridge filter and reverse osmosis unit, and pre-filtering device water inlet end is connected with raw water water inlet pipe, and reverse osmosis unit discharge purified water mouth is connected with desalted water outlet pipe；Cleaning device includes Scatula, medicine washes filter and flushing cisterns, Scatula is connected with desalted water outlet pipe and reverse osmosis unit concentrated water discharge mouth respectively, medicine washes filter inlet and is connected with Scatula, medicine washes filter liquid outlet and is connected with flushing cisterns, flushing pump and heating unit are installed in flushing cisterns, flushing pump water outlet is connected with reverse osmosis unit water inlet pipe, and the PH adjusters communicated therewith are equipped with above flushing cisterns.The utility model improves producing water ratio, water quality and the service life of reverse osmosis unit.
Description
Technical field
It the utility model is related to technical field of water treatment equipment, and in particular to a kind of high-recovery reverse osmosis desalination plant.
Background technology
Desalted water refers to the contained strong electrolyte removing for being easy to remove or is reduced to a degree of water, in desalted water
Remaining salt content should be between 1~5 mg/litre.Most ripe desalting technology industrial at present is reverse osmosis technology, different water sources
It is intended to take the reverse osmosis water treatment system of different process, if design or misoperation, directly affect producing water ratio and water quality, sternly
Reverse osmosis membrane can be caused to scrap during weight, therefore the protection of reverse osmosis unit is operated in whole system and operational process to pass weight
Will.Reverse osmosis unit can also decline, need at this time to reverse osmosis membrane through operation after a while, reverse osmosis membrane nature producing water ratio
Cleaned, existing flusher causes to clean due to not being controlled the pH value, flushing pressure and temperature of flushing liquor
It is ineffective, so as to influence reverse osmosis unit service life and producing water ratio.
Utility model content
For in the prior art the defects of, the utility model provides a kind of high-recovery reverse osmosis desalination plant, to improve
Producing water ratio, water quality and the service life of reverse osmosis unit.
Concrete technical scheme is as described below：
A kind of high-recovery reverse osmosis desalination plant, including：Raw water water inlet pipe, purifier, cleaning device and desalted water
Outlet pipe；
The purifier includes by the sequentially connected pre-filtering device of pipeline, scale preventative chemicals dosing plant, ensured public security
Filter and reverse osmosis unit, the pre-filtering device water inlet end are connected with raw water water inlet pipe, the reverse osmosis unit water purification row
Mouth is put to be connected with desalted water outlet pipe；
The cleaning device includes Scatula, medicine and washes filter and flushing cisterns, the Scatula respectively with desalted water water outlet
Pipe is connected with reverse osmosis unit concentrated water discharge mouth, and the medicine washes filter inlet and is connected with Scatula, and the medicine washes filter
Liquid outlet is connected with flushing cisterns, and flushing pump and heating unit, the flushing pump water outlet and reverse osmosis are provided with the flushing cisterns
Saturating device water inlet pipe connection, the flushing cisterns top are equipped with the PH adjusters communicated therewith.
Beneficial effect：It is preliminary to raw water progress net that pre-filtering device, scale preventative chemicals dosing plant and cartridge filter are installed
After change, purified by reverse osmosis unit, improve producing water ratio and water quality, while make reverse osmosis unit service life more
It is long；By varying the pH value of flushing liquor, water quality, temperature and cleaning pressure, reverse osmosis producing water ratio and water quality are further improved, is prolonged
The service life of reverse osmosis unit is grown.
Further limit, PH detectors are installed on the flushing cisterns.
Beneficial effect：PH detections are carried out to flushing liquor, so as to preferably control the pH value of flushing liquor.
Further limit, entering water electromagnetic valve is installed on the pipeline that the cartridge filter is connected with reverse osmosis unit.
Beneficial effect：Ensure that the path between raw water and reverse osmosis unit can be automatically cut off when supply equipment is shut down at the same time,
Ensure that reverse osmosis unit is not contaminated under shutdown status.
Further limit, booster pump, and the increasing are installed on the pipeline that the cartridge filter is connected with reverse osmosis unit
Press pump is between entering water electromagnetic valve and reverse osmosis unit.
Beneficial effect：The hydraulic pressure of supply reverse osmosis unit is improved, further improves producing water ratio.
Further limit, the reverse osmosis unit concentrated water discharge mouth is provided with regulating valve.
Beneficial effect：Adjust reverse osmosis membrane in reverse osmosis unit and cross water hydraulic pressure, prevent hydraulic pressure excessive and reverse osmosis membrane is damaged,
Preferably to protect reverse osmosis membrane.
Further limit, pressure gauge A, the supercharging are provided with the pipeline that the booster pump is connected with cartridge filter
Pump and pressure gauge B is set on the pipeline being connected with reverse osmosis unit.
Beneficial effect：Pressure gauge A is used to show pressure when water enters booster pump, determines pre-filtering device and ensured public security
Filter operating status, pressure gauge B is used for the pressure for showing that booster pump outlet enters reverse osmosis unit, so as to pass through reverse osmosis dress
Put concentrated water discharge mouth and adjust pressure regulating valve.
Further limit, the desalted water outlet pipe is provided with pure water flowmeter, the reverse osmosis unit concentrated water discharge mouth
Pus flowmeter is installed.
Beneficial effect：Detection metering pure water and concentrated water flow, and then control reverse osmosis desalination plant producing water ratio.
Further limit, pressure gauge C is provided with the pipeline that the flushing pump is connected with reverse osmosis unit.
Further limit, the desalted water outlet pipe is provided with conductivity meter.
Beneficial effect：The electrical conductivity of pure water when showing reverse osmosis desalination plant operation.
Further limit, the Scatula washes filter with the medicine and is connected by being provided with the pipeline of check valve.
Compared with prior art, the utility model beneficial effect：
1st, the utility model carries out raw water by installing pre-filtering device, scale preventative chemicals dosing plant and cartridge filter
After preliminary purification, purified by reverse osmosis unit, improve producing water ratio and water quality, while reverse osmosis unit is used week
Phase is longer；By varying the pH value of flushing liquor, water quality, temperature and cleaning pressure, reverse osmosis producing water ratio and water are further improved
Matter, extends the service life of reverse osmosis unit.
2nd, the utility model is provided with entering water electromagnetic valve on the pipeline that cartridge filter is connected with reverse osmosis unit, ensures
Supply equipment can automatically cut off the path between raw water and reverse osmosis unit at the same time when shutting down, ensure that reverse osmosis unit is being shut down
It is not contaminated under state.
3rd, the utility model private processes automatic control program, makes the equipment each step equipment of strict implement in the process of running
Protective program, exempts numerous and diverse manual operation.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all of the figs, it is similar
Element or part are generally identified by similar reference numeral.In attached drawing, each element or part might not be according to actual ratios
Draw.
Fig. 1 is a kind of high-recovery reverse osmosis desalination plant structure diagram that one embodiment of the utility model provides；
Fig. 2 is partial enlarged view at A in Fig. 1；
In reference numeral, 1, raw water water inlet pipe；2nd, desalted water outlet pipe；3rd, pre-filtering device；4th, scale preventative dosing fills
Put；5th, cartridge filter；6th, reverse osmosis unit；61st, the reverse osmosis mechanism of the first order；62nd, the reverse osmosis mechanism in the second level；7th, make up a prescription
Case；8th, medicine washes filter；9th, flushing cisterns；10th, flushing pump；11st, heating unit；12nd, PH adjusters；13rd, PH detectors；14th, into
Water solenoid valve；15th, regulating valve；16th, pure water flowmeter；17th, pus flowmeter；18th, pressure gauge A；19th, control valve；20th, conductance
Rate instrument；21st, check valve；22nd, pressure gauge B；23rd, booster pump；24th, low-voltage protective switch；25th, scouring electromagnetic valve；26th, pressure gauge C.
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with attached drawing.Following embodiments are only
For clearly illustrating the technical solution of the utility model, therefore example is only used as, and this practicality cannot be limited with this
New protection domain.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this reality
The ordinary meaning understood with new one of ordinary skill in the art.
Embodiment：A kind of high-recovery reverse osmosis desalination plant, as depicted in figs. 1 and 2, including：It is raw water water inlet pipe 1, net
Water installations, cleaning device and desalted water outlet pipe 2；
The purifier is included by the sequentially connected pre-filtering device 3 of pipeline, scale preventative chemicals dosing plant 4, security personnel
Filter 5 and reverse osmosis unit 6,3 water inlet end of pre-filtering device are connected with raw water water inlet pipe 1, the reverse osmosis unit 6
Discharge purified water mouth is connected with desalted water outlet pipe 2；
Wherein reverse osmosis unit 6 includes reverse osmosis mechanism 62 of the reverse osmosis mechanism 61 of the first order and the second level, the wherein first order
Reverse osmosis mechanism 61 sets the first water outlet and the second water outlet, the first water outlet to be connected with desalted water outlet pipe 2 by pipeline,
And control valve 19 is provided with connecting line, the second water outlet mechanism 62 reverse osmosis with the second level is connected, second level reverse osmosis
62 water outlet of saturating mechanism is connected with desalted water outlet pipe 2, can be different according to raw water quality difference or desalted water demand, selects reverse osmosis
The purification number of saturating device 6.
Pre-filtering device 3 carries out primary filter to raw water in reverse osmosis desalination plant, removes the insoluble particles in water
Thing, reduces the pollution of subsequent purification mechanism, blocks probability.
Scale preventative chemicals dosing plant 4 is efficient, safe handling, can at utmost prevent life of the incrustation scale on reverse-osmosis membrane element surface
Into.
Cartridge filter 5 is mainly to remove pre-processing system not removing the clean material for being more than 5um, can also be shut off preposition
The filtrate that the processing of filtration apparatus 3 is lost in, so as to ensure that reverse osmosis membrane is few contaminated in reverse osmosis unit 6.
The cleaning device includes Scatula 7, medicine and washes filter 8 and flushing cisterns 9, the Scatula 7 respectively with desalted water
Outlet pipe 2 is connected with 6 concentrated water discharge mouth of reverse osmosis unit, and the medicine washes 8 inlet of filter and is connected with Scatula 7, the medicine
Wash 8 liquid outlet of filter to be connected with flushing cisterns 9, flushing pump 10 and heating unit 11, the flushing are installed in the flushing cisterns 9
Pump 10 water outlets to be connected with 6 water inlet pipe of reverse osmosis unit, the top of flushing cisterns 9 is equipped with the PH adjusters 12 communicated therewith.
Installation flushing pump 10 and heating unit 11 in flushing cisterns 9, the PH communicated therewith is installed above flushing cisterns 9 and is adjusted
Device 12 is for improving the flushing effect of reverse osmosis membrane, so as to improve producing water ratio and water quality, while also extends reverse osmosis dress
The service life put, reduces production cost.
PH detectors 13 are installed on the flushing cisterns 9, PH detections are carried out to flushing liquor, determine to need to carry out flushing liquor
Acidifying or alkalization, so as to preferably control the pH value of flushing liquor.
Entering water electromagnetic valve 14 is installed on the pipeline that the cartridge filter 5 is connected with reverse osmosis unit 6, ensures that water supply is set
The path between raw water and reverse osmosis unit 6 can be automatically cut off during standby shutdown at the same time, ensures the reverse osmosis membrane in reverse osmosis unit 6
It is not contaminated under shutdown status.
Booster pump 23, and the booster pump 23 are installed on the pipeline that the cartridge filter 5 is connected with reverse osmosis unit 6
Between entering water electromagnetic valve 14 and reverse osmosis unit 6, to improve the hydraulic pressure of supply reverse osmosis unit, so as to further improve production water
Rate.
6 concentrated water discharge mouth of reverse osmosis unit is provided with regulating valve 15, water hydraulic pressure is crossed for adjusting reverse osmosis membrane, water purification or
First concentrated water regulating valve 15 is opened during flushing, every pointer is slowly adjusted again after booster pump 23 or flushing pump 10 start.
It should be strongly noted that whenever all should not be by 15 Close All of regulating valve, to prevent in reverse osmosis unit 6
Pressure raises damage reverse osmosis membrane suddenly.
Pressure gauge A18, booster pump 23 and reverse osmosis unit are provided with the pipeline that booster pump 23 is connected with cartridge filter 5
Set pressure gauge B22, pressure gauge A18 to be used to show pressure when water enters booster pump 23 on the pipeline of 6 connections, determine preposition mistake
5 operating status of device 3 and cartridge filter is filtered, pressure gauge B22 is used to show the outlet of booster pump 23 into the pressure of reverse osmosis unit 6
Power, so as to adjust pressure by 6 concentrated water discharge mouth regulating valve 15 of reverse osmosis unit.
The desalted water outlet pipe 2 is provided with pure water flowmeter 16, and the 6 concentrated water discharge mouth of reverse osmosis unit is provided with purulence
Water ga(u)ge 17, for calculating streamflow and concentrated water amount, analyzes purge condition.
Pressure gauge C26 is provided with the pipeline that the raw water water inlet pipe 1, flushing pump 10 are connected with reverse osmosis unit 6, is used for
Measure washing pressure.
The desalted water outlet pipe 2 is provided with conductivity meter 20.
The Scatula 7 washes filter 8 with the medicine and is connected by being provided with the pipeline of check valve 21.
The utility model water purification is achieved in that raw water by pre-filtering device 3, scale preventative chemicals dosing plant 4, security personnel
After filter 5 purifies, sprayed into by increasing pump 23 in reverse osmosis units 6, after the filtering that become more meticulous, be discharged into desalted water outlet pipe
In 2.
After the utility model cleaning is achieved in that the scouring electromagnetic valve 25 for opening flushing cisterns 9, flushing pump 10 starts to transport
OK, flushing liquor is cleaned after allotment is filtered after spraying into reverse osmosis unit 6, and cleaning is automatically closed after 90 seconds.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify the technical solution described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical solution of type, it should all cover among the claim of the utility model and the scope of specification.
Claims (10)
- A kind of 1. high-recovery reverse osmosis desalination plant, it is characterised in that including：Raw water water inlet pipe (1), purifier, cleaning Device and desalted water outlet pipe (2)；The purifier is included by the sequentially connected pre-filtering device of pipeline (3), scale preventative chemicals dosing plant (4), security personnel Filter (5) and reverse osmosis unit (6), pre-filtering device (3) water inlet end are connected with raw water water inlet pipe (1), described anti- Permeability apparatus (6) discharge purified water mouth is connected with desalted water outlet pipe (2)；The cleaning device includes Scatula (7), medicine washes filter (8) and flushing cisterns (9), and the Scatula (7) is respectively with taking off Brine outlet pipe (2) is connected with reverse osmosis unit (6) concentrated water discharge mouth, and the medicine washes filter (8) inlet and Scatula (7) Connection, the medicine washes filter (8) liquid outlet and is connected with flushing cisterns (9), the flushing cisterns (9) is interior be provided with flushing pump (10) and Heating unit (11), flushing pump (10) water outlet are connected with reverse osmosis unit (6) water inlet pipe, above the flushing cisterns (9) Equipped with the pH-meter (12) communicated therewith.
- A kind of 2. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the flushing cisterns (9) On pH detectors (13) are installed.
- A kind of 3. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the cartridge filter (5) entering water electromagnetic valve (14) is installed on the pipeline being connected with reverse osmosis unit (6).
- A kind of 4. high-recovery reverse osmosis desalination plant according to claim 3, it is characterised in that the cartridge filter (5) booster pump (23) is installed, and the booster pump (23) is located at entering water electromagnetic valve on the pipeline being connected with reverse osmosis unit (6) (14) between reverse osmosis unit (6).
- 5. a kind of high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that in the reverse osmosis dress Put (6) concentrated water discharge mouth and be provided with regulating valve (15).
- 6. a kind of high-recovery reverse osmosis desalination plant according to claim 4, it is characterised in that in the booster pump (23) pressure gauge A (18), the booster pump (23) and reverse osmosis unit are provided with the pipeline being connected with cartridge filter (5) (6) pressure gauge B (22) is set on the pipeline of connection.
- A kind of 7. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the desalted water water outlet Pipe (2) is provided with pure water flowmeter (16), and reverse osmosis unit (6) the concentrated water discharge mouth is provided with concentrated water flowmeter (17).
- A kind of 8. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the flushing pump (10) Pressure gauge C (26) is provided with the pipeline being connected with reverse osmosis unit (6).
- A kind of 9. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the desalted water water outlet Pipe (2) is provided with conductivity meter (20).
- A kind of 10. high-recovery reverse osmosis desalination plant according to claim 1, it is characterised in that the Scatula (7) Filter (8) is washed with the medicine to be connected by being provided with the pipeline of check valve (21), and low pressure guarantor is provided with the flushing cisterns (9) Shield switch (24) and scouring electromagnetic valve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153228.XU CN207347292U (en) | 2017-09-08 | 2017-09-08 | A kind of high-recovery reverse osmosis desalination plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153228.XU CN207347292U (en) | 2017-09-08 | 2017-09-08 | A kind of high-recovery reverse osmosis desalination plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207347292U true CN207347292U (en) | 2018-05-11 |
Family
ID=62409575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721153228.XU Expired - Fee Related CN207347292U (en) | 2017-09-08 | 2017-09-08 | A kind of high-recovery reverse osmosis desalination plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207347292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607686A (en) * | 2019-01-22 | 2019-04-12 | 河南省星碟节能科技有限公司 | Reverse osmosis monitoring and intelligent online cleaning system |
| CN112979022A (en) * | 2021-03-02 | 2021-06-18 | 嘉善乐枫生物科技有限公司 | Preparation and cleaning process of ultrapure water device in laboratory |
-
2017
- 2017-09-08 CN CN201721153228.XU patent/CN207347292U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607686A (en) * | 2019-01-22 | 2019-04-12 | 河南省星碟节能科技有限公司 | Reverse osmosis monitoring and intelligent online cleaning system |
| CN112979022A (en) * | 2021-03-02 | 2021-06-18 | 嘉善乐枫生物科技有限公司 | Preparation and cleaning process of ultrapure water device in laboratory |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 |