CN204746112U - Reverse osmosis system salt rejection on -line monitoring device - Google Patents
Reverse osmosis system salt rejection on -line monitoring device Download PDFInfo
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- CN204746112U CN204746112U CN201520357292.4U CN201520357292U CN204746112U CN 204746112 U CN204746112 U CN 204746112U CN 201520357292 U CN201520357292 U CN 201520357292U CN 204746112 U CN204746112 U CN 204746112U
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- 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
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Abstract
The utility model discloses a reverse osmosis system salt rejection on -line monitoring device, including the reverse osmosis water -supply line, reverse osmosis pipeline intercommunication reverse osmosis water -feeding pump, the reverse osmosis water -feeding pump is linked together with the safety filter ware, and safety filter ware intercommunication reverse osmosis device, reverse osmosis device pass through clean -up line intercommunication reverse osmosis and shut down the rinse -system, through clear washing medicine liquid pipeline intercommunication reverse osmosis reverse osmosis 1, produce water line intercommunication fresh -water tank through reverse osmosis unit, the rinse -system is shut down through fresh -water tank sparge water pipeline intercommunication reverse osmosis respectively to the fresh -water tank, goes to the A desalting system through A desalting system pipeline, be equipped with the one -level monitoring point the reverse osmosis water -feeding pump is linked together the pipeline with the safety filter ware on, is equipped with the second grade monitoring point on the product water line of reverse osmosis device, be equipped with light specific conductivity monitoring point on each membrane module. The device to reverse osmosis system and each membrane module all go on in real time, accurate, effectively survey to assurance equipment can be for a long time, the safe operation.
Description
Technical field
The utility model relates to water treatment on-Line Monitor Device, particularly a kind of counter-infiltration system salt rejection rate on-Line Monitor Device.
Background technology
Reverse osmosis technology is as a kind of new type water processing method, and level and technique are quite ripe and perfect, are widely used in the pro desalting system treatment process of all kinds of water.Relative to traditional ion-exchange treatment, reverse osmosis decreases the discharge capacity of soda acid, is conducive to saving water resource and environmental protect protection.
In engineering actual motion, salt rejection rate is as the important indicator evaluating reverse osmosis unit performance, and accurate, real-time, the validity of its measurement result, not only affects the test result of reverse osmosis module, and directly affects the result of determination of reverse osmosis produced quality.Therefore, the importance of accurate, real-time, effective its salt rejection rate of On-line monitor of reverse osmosis unit run duration seems particularly outstanding.
At present, utilize on-line determination counter-infiltration system water-in and water-out electrical conductivity, On-line monitor is realized to counter-infiltration system salt rejection rate; Single membrane module can only adopt regularly the manual membrane module that measures one by one to produce water conductivity, thus props up membrane module to counter-infiltration list and carry out salt rejection rate manual supervision.
Utility model content
The purpose of this utility model is to provide a kind of counter-infiltration system salt rejection rate on-Line Monitor Device, this device can carry out runtime on-line monitor to reverse osmosis unit salt rejection rate, real-time, accurate and effective mensuration is all carried out to counter-infiltration system and each membrane module, thus the equipment of guarantee can for a long time, safe operation.
The purpose of this utility model is realized by following technical proposals.
A kind of counter-infiltration system salt rejection rate on-Line Monitor Device, comprise the reverse osmosis feedwater pipeline be connected with pretreatment system, counter-infiltration pipeline is communicated with reverse osmosis feedwater pump, is provided with adds reducing agent, bactericide, antisludging agent mouth at reverse osmosis feedwater delivery side of pump; Reverse osmosis feedwater pump is connected with cartridge filter, cartridge filter is communicated with reverse osmosis unit by reverse osmosis high-pressure pump, wherein, reverse osmosis unit is communicated with counter-infiltration by clean-up line and shuts down rinse-system, by cleaning physic liquor intake tube line with clean back liquid pipeline and be communicated with counter-infiltration purging system; Be communicated with fresh-water tank by reverse osmosis unit water producing pipe line, fresh-water tank is communicated with counter-infiltration respectively by fresh-water tank flushing water pipeline and shuts down rinse-system, removes primary demineralixation system by primary demineralixation system pipeline; On reverse osmosis feedwater pump to be connected pipeline with cartridge filter, to be provided with one-level monitoring point, reverse osmosis unit water producing pipe line to be provided with secondary monitoring point, each membrane module is provided with fresh water monitored conductivity point.
Further, in described device, fresh water monitored conductivity point is communicated with each membrane module, and each membrane module is provided with electrical conductivity measuring point sampling magnetic valve.
Further, in described device, sampling magnetic valve is provided with electrical conductivity table, and electrical conductivity table is connected with PLC control system.
Further, in described device, the public one piece of electrical conductivity table of the sampling magnetic valve on branched membrane module.
Relative to prior art, effect of the present utility model is:
Counter-infiltration system salt rejection rate mensuration mode is had to improve with novel, the unreasonable mode that it measures comprehensively is analyzed, take rational improved procedure simultaneously, thus reverse osmosis unit salt rejection rate is comprehensively measured, be more beneficial to the guarantee of system cloud gray model.
There is following distinguishing feature:
1, the utility model measures counter-infiltration system salt rejection rate comprehensively.On the basis of Analytical system salt rejection rate, increase and each membrane module salt rejection rate of reverse osmosis unit is measured.
2, the utility model is by PLC system automatic control electric magnet valve switch, and PLC system carries out the sampling and processing of data automatically, and is automatically exported by data record simultaneously, meets the demand of the increasingly automated operation of prevailing system.
3, the service life of membrane component and prolong, financial cost is saved.By all carrying out the mensuration of electrical conductivity to each membrane module, operations staff can be allowed to have judged the operation conditions of each membrane module, thus adopt an effective measure timely, the service life of membrane component and prolong.
4, improved procedure is simple, feasible.Existing counter-infiltration system all has the hand sample point of single membrane module conductance measurement, and the utility model technology only installs controllable electromagnetic valve additional on original sampling pipe, and by the switch of PLC system automatic control electric magnet valve, patent optimisation technique is simple, feasible.
5, the mensuration of system salt rejection rate runs on stopping according to counter-infiltration and automatically carries out measuring, stopping, and does not need artificial interference, only need record salt rejection rate.
6, engineering example shows, membrane module after being improved by utility model and system salt rejection rate measure can better, more comprehensively, the more monitoring of timeliness, evaluation counter-infiltration system and each membrane module thereof operational effect, what be beneficial to equipment runs on maintenance, is worthy of popularization.
7, provide more accurate, comprehensively instruct and suggestion to the operation of reverse osmosis equipment, maintenance, maintenance by novel salt rejection rate On-line monitor mode and device.
Accompanying drawing explanation
Fig. 1 is counter-infiltration system equipment composition schematic diagram.
Fig. 2 is reverse osmosis deaslination rate measuring point present situation layout drawing.
Fig. 3 is that novel trans osmosis deaslination rate measures point layout figure.
Fig. 4 is novel trans osmosis deaslination rate control principle drawing.
In figure: 1, reverse osmosis feedwater pump; 2, reverse osmosis feedwater pipeline; 3, cartridge filter; 4, reverse osmosis high-pressure pump; 5, reverse osmosis unit; 6, clean-up line; 7, physic liquor intake tube line is cleaned; 8, liquid pipeline is cleaned back; 9, fresh-water tank; 10, fresh-water tank flushing water pipeline; 11, reverse osmosis unit water producing pipe line; 12, primary demineralixation system pipeline; 13, one-level monitoring point; 14, secondary monitoring point; 15, fresh water monitored conductivity point.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figure 3, this counter-infiltration system salt rejection rate on-Line Monitor Device, comprise the reverse osmosis feedwater pipeline 2 be connected with pretreatment system, counter-infiltration pipeline 2 is communicated with reverse osmosis feedwater pump 1, interpolation reducing agent is provided with in the outlet of reverse osmosis feedwater pump 1, bactericide, antisludging agent mouth, reverse osmosis feedwater pump 1 is connected with cartridge filter 3, cartridge filter 3 is communicated with reverse osmosis unit 5 by reverse osmosis high-pressure pump 4, wherein, reverse osmosis unit 5 is communicated with counter-infiltration by clean-up line 6 and shuts down rinse-system, by cleaning physic liquor intake tube line 7 with clean back liquid pipeline 8 and be communicated with counter-infiltration purging system, be communicated with fresh-water tank 9 by reverse osmosis unit water producing pipe line 11, fresh-water tank 9 is communicated with counter-infiltration respectively by fresh-water tank flushing water pipeline 10 and shuts down rinse-system, removes primary demineralixation system by primary demineralixation system pipeline 12, on reverse osmosis feedwater pump 1 to be connected pipeline with cartridge filter 3, to be provided with one-level monitoring point 13, reverse osmosis unit water producing pipe line 11 to be provided with secondary monitoring point 14, each membrane module is provided with fresh water monitored conductivity point 15.
Wherein, fresh water monitored conductivity point 15 is communicated with each membrane module, and each membrane module is provided with electrical conductivity measuring point sampling magnetic valve.Sampling magnetic valve is provided with and produces water conductivity table, the public one piece of electrical conductivity table of the sampling magnetic valve on branched membrane module.Electrical conductivity table is connected with PLC control system.
Below the utility model system is improved and be described in detail.
1, system equipment general introduction
Counter-infiltration system is widely used in boiler of power plant makeup Water System now, as the desalting system that water treatment system is initial.Be made up of equipment such as cartridge filter, high-pressure pump, reverse osmosis membrane assemblies, as shown in Figure 1.
Water enters counter-infiltration front safety filter through reverse osmosis feedwater pump, and add reducing agent, bactericide, antisludging agent at reverse osmosis feedwater delivery side of pump, after cartridge filter filters, counter-infiltration system is entered again by the boosting of reverse osmosis high-pressure pump, by the effect of reverse osmosis membrane assembly, carry out initial desalination to former water, fresh water is all collected to fresh-water tank.Counter-infiltration run duration is all configured with corresponding on-line chemical monitoring instrument, to carry out monitoring in real time, effectively to counter-infiltration system run duration, thus ensures that counter-infiltration system can efficient, safety, economical operation for a long time.The all operations of counter-infiltration system controls automatically by electric and control system.
2, reverse osmosis unit salt rejection rate measures present situation and deficiency
In DL/T951-2005 " thermal power plant's reverse osmosis water disposal facility checks and accepts directive/guide ", the conventional Conductivity Calculation method adopted of reverse osmosis deaslination rate mensuration is:
R＝(1—C
0/C
1)×100％
In formula:
R---salt rejection rate, 100%;
C
0---fresh water electrical conductivity (system or single membrane module), uS/cm;
C
1---former water conductivity, uS/cm.
Based on this assay method, as shown in Figure 2, in figure, " SC " represents system online electrical conductivity sample point and configures corresponding online electrical conductivity table current counter-infiltration system salt rejection rate point layout.
As shown in Figure 2, present stage reverse osmosis unit only discharge total mouth (measuring point 2) design electrical conductivity sample point at system inlets (measuring point 1) and fresh water, and configure online electrical conductivity table simultaneously.Utilize the online electrical conductivity table of measuring point 1, measuring point 2 to measure counter-infiltration system water-in and water-out electrical conductivity, On-line monitor is realized to counter-infiltration system salt rejection rate; But single membrane module can only adopt regularly the manual membrane module that measures one by one to produce water conductivity, props up membrane module carry out salt rejection rate supervision to counter-infiltration list.
This kind of mode can meet the operation demand of system to a certain extent, but exists significantly not enough.Fig. 2 shows, present stage counter-infiltration system salt rejection rate to measure be only measure whole system, the online salt rejection rate of single membrane module cannot be realized and measure.Therefore, if at run duration, be difficult to find when quality problems appear in single membrane module, because the variable effect of single membrane module to whole system aquifer yield water quality is less, but along with the increase of running time, this situation there will be deterioration, is unfavorable for that equipment runs.Therefore, be badly in need of improving existing reverse osmosis unit salt rejection rate On-line monitor mode.Not only needing to realize system salt rejection rate On-line monitor, also needing the salt rejection rate to often propping up membrane module in device to realize On-line monitor.
3, novel salt rejection rate On-line monitor mode and device
For meeting the demand realizing counter-infiltration system and single membrane module salt rejection rate On-line monitor, need the online conductance table of electrical conductivity measuring point in device and configuration thereof be improved and be increased newly.Point layout figure after improvement and configuration electrical conductivity table be as shown in Figure 3:
Comparison diagram 3 is known with Fig. 2: 1) present stage salt rejection rate measuring point be only arranged in into water (measuring point 1) with produce water (measuring point 2) female pipe place, and novel salt rejection rate On-line monitor mode additionally newly-increased membrane module fresh water electrical conductivity measuring point (measuring point 3); 2) each membrane module electrical conductivity measuring point sampling magnetic valve (in figure K1, K2, K3........Kn) newly-increased; 3) newly-increased one piece of membrane module produces water power and leads table, by controlling the switch of sampling magnetic valve (in figure K1, K2, K3........Kn), measures different membrane module conductance; 4) for cost-saving, taking the public one piece of conductance table of branched membrane module, by controlling sampling electromagnetic valve switch, realizing the online real-time oversight of membrane module salt rejection rate.
For at utmost realizing automatic mensuration and the record of novel trans osmosis deaslination rate determinator, then need to configure corresponding control system, control principle drawing as shown in Figure 4:
After counter-infiltration system starts, give novel measuring fixed system enabling signal immediately, this system will control the sequence switch of the sampling magnetic valve (K1, K2, K3........Kn) of reverse osmosis membrane assembly automatically by PLC system, circulation is carried out, 30S opened by each sampling magnetic valve, the electrical conductivity of membrane module is often propped up by the sequential determination of electrical conductivity table 3, data after collection input to the calculating that PLC system carries out the salt rejection rate of single membrane module, after calculating completes, data complete record and output display, the circular flow of the novel determinator of counter-infiltration.After counter-infiltration system is out of service, program will be automatically out of service.
4, application example
Certain boiler of power plant makeup Water System is designed to ultrafiltration+counter-infiltration+EDI and processes former water, to reach qualified salt water quality, wherein counter-infiltration system is designed to one-level two sections (8:4), system salt rejection rate >=98.5%, single membrane module salt rejection rate is >=99.5%, and design parameter is as follows:
Certain factory's counter-infiltration system device parameter of table 1
This factory improves one's methods according to this novel trans permeability apparatus salt rejection rate On-line monitor mode and carries out the improvement of salt rejection rate monitor mode, realizes counter-infiltration system and membrane module salt rejection rate On-line monitor after improvement.In table 2, data are pluck after device improves to select data.
Table 2 improves rear reverse osmosis unit salt rejection rate determination data table
On-the-spot practical application request can be met completely according to the reverse osmosis unit salt rejection rate after improving, simultaneously can the operational effect of more omnibearing sign, supervision counter-infiltration system and membrane module.Although table 2 shows to meet under technical protocol, acceptance specification etc. require prerequisite in system salt rejection rate, the desalting efficiency of each membrane module is closely not identical yet, and discovery the 2nd, 3,9 films comparatively other membrane module weak effect of being not difficult, the maintenance for system also brings and judges more accurately and instruct.
Shown by the engineering example after this technological improvement, novel salt rejection rate On-line monitor mode and device can better, more comprehensively, the more monitoring of timeliness, evaluation counter-infiltration system and each membrane module thereof operational effect.
Claims (4)
1. a counter-infiltration system salt rejection rate on-Line Monitor Device, comprise the reverse osmosis feedwater pipeline (2) be connected with pretreatment system, counter-infiltration pipeline (2) is communicated with reverse osmosis feedwater pump (1), is provided with adds reducing agent, bactericide, antisludging agent mouth in the outlet of reverse osmosis feedwater pump (1); Reverse osmosis feedwater pump (1) is connected with cartridge filter (3), cartridge filter (3) is communicated with reverse osmosis unit (5) by reverse osmosis high-pressure pump (4), wherein, reverse osmosis unit (5) is communicated with counter-infiltration by clean-up line (6) and shuts down rinse-system, by cleaning physic liquor intake tube line (7) with clean back liquid pipeline (8) and be communicated with counter-infiltration purging system; Fresh-water tank (9) is communicated with by reverse osmosis unit water producing pipe line (11), fresh-water tank (9) is communicated with counter-infiltration respectively by fresh-water tank flushing water pipeline (10) and shuts down rinse-system, removes primary demineralixation system by primary demineralixation system pipeline (12); One-level monitoring point (13) is provided with on reverse osmosis feedwater pump (1) to be connected pipeline with cartridge filter (3), reverse osmosis unit water producing pipe line (11) is provided with secondary monitoring point (14), it is characterized in that: on each membrane module, be provided with fresh water monitored conductivity point (15).
2. a kind of counter-infiltration system salt rejection rate on-Line Monitor Device according to claim 1, is characterized in that: described fresh water monitored conductivity point (15) is communicated with each membrane module, and each membrane module is provided with electrical conductivity measuring point sampling magnetic valve.
3. a kind of counter-infiltration system salt rejection rate on-Line Monitor Device according to claim 2, is characterized in that: described sampling magnetic valve is provided with electrical conductivity table, and electrical conductivity table is connected with PLC control system.
4. a kind of counter-infiltration system salt rejection rate on-Line Monitor Device according to claim 3, is characterized in that: the public one piece of electrical conductivity table of the sampling magnetic valve on described branched membrane module.
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| CN201520357292.4U CN204746112U (en) | 2015-05-28 | 2015-05-28 | Reverse osmosis system salt rejection on -line monitoring device |
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| CN201520357292.4U CN204746112U (en) | 2015-05-28 | 2015-05-28 | Reverse osmosis system salt rejection on -line monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335337A (en) * | 2017-07-25 | 2017-11-10 | 河海大学 | A kind of combination membrane capacitive deionization system and its processing method |
| CN115228297A (en) * | 2022-07-15 | 2022-10-25 | 华北电力科学研究院有限责任公司 | Reverse osmosis automatic cleaning method and system |
-
2015
- 2015-05-28 CN CN201520357292.4U patent/CN204746112U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335337A (en) * | 2017-07-25 | 2017-11-10 | 河海大学 | A kind of combination membrane capacitive deionization system and its processing method |
| CN115228297A (en) * | 2022-07-15 | 2022-10-25 | 华北电力科学研究院有限责任公司 | Reverse osmosis automatic cleaning method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180727 Address after: 710065 No. 1 building, No. 12, Qin Tang, No. 187, science and technology four road, hi tech Zone, Xi'an, Shaanxi Patentee after: North China Electric Power Research Institute Co., Ltd. Xi'an branch Address before: 710065 No. 1 building, No. 12, Qin Tang, No. 187, science and technology four road, hi tech Zone, Xi'an, Shaanxi Patentee before: North China Electrical Power Research Institute (Xi'an) Co., Ltd. |
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| TR01 | Transfer of patent right |