CN104445736B - Desalination processing system and its method for operation that reverse osmosis membrane is combined with ion-exchanger - Google Patents
Desalination processing system and its method for operation that reverse osmosis membrane is combined with ion-exchanger Download PDFInfo
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- CN104445736B CN104445736B CN201410700283.0A CN201410700283A CN104445736B CN 104445736 B CN104445736 B CN 104445736B CN 201410700283 A CN201410700283 A CN 201410700283A CN 104445736 B CN104445736 B CN 104445736B
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- 238000010612 desalination reaction Methods 0.000 title claims abstract description 26
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000001764 infiltration Methods 0.000 claims abstract description 37
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 17
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 17
- 150000001768 cations Chemical class 0.000 claims abstract description 16
- 230000001172 regenerating effect Effects 0.000 claims abstract description 16
- 150000002500 ions Chemical class 0.000 claims abstract description 15
- 230000002378 acidificating effect Effects 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 9
- 238000011282 treatment Methods 0.000 claims description 16
- 230000008929 regeneration Effects 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- 150000003839 salts Chemical class 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 8
- 150000001450 anions Chemical class 0.000 claims description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 210000003296 saliva Anatomy 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011033 desalting Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009285 membrane fouling Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002158 endotoxin Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 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
Abstract
The desalination processing system that reverse osmosis membrane is combined with ion-exchanger, it is characterised in that：Include the weakly acidic cation exchanger and its regenerative system, carbon dioxide cleaner, counter-infiltration system, one-level mixed bed and two grades of mixed beds being sequentially connected, one-level mixed bed and the series operation simultaneously all the time of two grades of mixed beds, are provided between carbon dioxide cleaner and counter-infiltration system plus alkali alkalization system.Described one-level mixed bed shares a set of regenerative system with two grades of mixed beds.Advantages of the present invention and effect：A. the demineralized water for reaching grade II desalted water matter can be produced；B. the high performance operating mode of counter-infiltration, the i.e. rate of recovery can be realized up to 85 90%, exempts addition antisludging agent；C. taking over each other for two-stage mixed ion exchanger can be realized, to reach the pattern of Effec-tive Function.
Description
Technical field
The present invention relates to the desalting system and its method for operation that the counter-infiltration of Effec-tive Function and ion-exchanger combine is realized,
Belong to water treatment desalination field.
Background technology
Weak-acid cation softens desalination processing system, reverse osmosis membrane desalination processing system and mixed ion exchanger desalination
Processing system is all widely used in water treatment desalination field respectively.Weak-acid cation softens desalination processing system and can remove in water
The salinity such as calcium and magnesium hardness；The anions and canons that reverse osmosis treatment system can be gone in eliminating water with certain salt rejection rate, reach desalination work
With；Mixed ion exchanger is arranged after one-level desalination processing system, i.e., non-demineralized water first passes through cation exchanger, removes
Carbon device, anion exchanger remove a certain proportion of anions and canons, and this is removed after cation exchanger and anion exchanger
The water of salt is one-level demineralized water, in order to reach the purpose of further desalination, the demineralized water after one-level desalination processing system, then Jing
Crossing mixed ion exchanger carries out deep desalting, makes mixed ion exchanger water outlet reach the requirement of grade II desalted water water quality.
The processing mode that conventional embrane method is combined with ion-exchanger is first-stage reverse osmosis+one-level cation exchanger mostly
The desalination processing system of+one-level anion exchanger+mixed ion exchanger.This desalination processing system mode is from producing water water quality
On be to disclosure satisfy that or reach two grades of water quality requirements except salt treatment, but the rate of recovery of counter-infiltration system can only be made left 75%
The right side, and also need to add counter-infiltration system antisludging agent to prevent reverse osmosis membrane fouling.
The content of the invention
It is an object of the invention to provide the desalination processing system that combines with ion-exchanger of reverse osmosis membrane and its operation side
Formula, not only can produce the demineralized water for reaching grade II desalted water water quality requirement, but also can realize counter-infiltration system and two
The high performance operating mode of level mixed ion exchanger.
The technical solution used in the present invention：
The desalination processing system that reverse osmosis membrane is combined with ion-exchanger, it is characterised in that：Include what is be sequentially connected
Weakly acidic cation exchanger and its regenerative system, carbon dioxide cleaner, counter-infiltration system, one-level mixed bed and two grades of mixed beds, one-level mixed bed with
Two grades of mixed bed series operations simultaneously all the time, are provided between carbon dioxide cleaner and counter-infiltration system plus alkali alkalization system.
Described one-level mixed bed shares a set of regenerative system with two grades of mixed beds.
The method of operation of the desalination processing system that reverse osmosis membrane is combined with ion-exchanger, comprises the following steps：
Weakly acidic cation exchanger is first passed through without the water of desalination（1）Ion-exchange treatment is carried out, it is hard to remove carbonate
Degree, then through carbon dioxide cleaner（2）Process by bicarbonate conversion into free carbon dioxide remove, to reduce carbonate alkalinity,
Afterwards, water quality is processed through adding alkali to adjust pH value（3）Afterwards（It is 10 or so to adjust pH value）Become counter-infiltration and enter saliva, then through anti-
Infiltration is except salt treatment（4）, make the anions and canons in water obtain certain clearance, then, counter-infiltration product water is mixed into one-level
Bed（5）Carry out, except salt treatment, then entering back into two grades of mixed beds（6）Carry out further except salt treatment, produce and reach two grades of desalinations
The demineralized water of water water quality requirement.
Advantage for present invention and effect：
The demineralized water for reaching grade II desalted water matter can be produced using the desalting system of the present invention.The height of counter-infiltration can be realized
The effect method of operation, the i.e. rate of recovery reach 85-90%, and need not counter-infiltration system be added antisludging agent to prevent reverse osmosis membrane fouling.
Taking over each other for two-stage mixed ion exchanger can be realized, to reach the pattern of Effec-tive Function.And ion-exchanger is used
Counter-infiltration system of the weakly acidic cation exchanger to arrange thereafter is set before counter-infiltration softened water is provided, to improve returning for counter-infiltration
The addition of yield and release reverse osmosis antisludging agent；And after counter-infiltration system arrange two-stage mixed ion exchanger combination, i.e.,
The combination of prime mixed ion exchanger+rear class mixed ion exchanger, can further carry out depth to the product water of counter-infiltration
Spend desalination and reach the requirement of grade II desalted water water quality index, meanwhile, two-stage mixed ion exchanger can adopt what is taken over each other
The method of operation, realizes the Effec-tive Function of respective two-stage mixed ion exchanger.
Description of the drawings
Fig. 1 is the system schematic of the present invention；
Fig. 2 is the schematic diagram that two-stage mixed bed realizes Effec-tive Function in the present invention.
In figure：Weakly acidic cation exchanger and regenerative system 1, carbon dioxide cleaner 2, plus alkali system 3, counter-infiltration system 4, one-level are mixed
Bed 5, two grades of mixed beds and regenerative system 6, valve A7, valve B8, valve C9, valve D10, valve E11, valve F6.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings：
As shown in figure 1, the desalination processing system that reverse osmosis membrane is combined with ion-exchanger, it is characterised in that：Include
The weakly acidic cation exchanger being sequentially connected and its regenerative system, carbon dioxide cleaner, counter-infiltration system, one-level mixed bed and two grades of mixed beds,
One-level mixed bed and the series operation simultaneously all the time of two grades of mixed beds, are provided between carbon dioxide cleaner and counter-infiltration system plus alkali alkalization system.
Described one-level mixed bed shares a set of regenerative system with two grades of mixed beds.
The method of operation of the desalination processing system that reverse osmosis membrane of the present invention is combined with ion-exchanger, including following step
Suddenly：
Weakly acidic cation exchanger is first passed through without the water of desalination（1）Ion-exchange treatment is carried out, it is hard to remove carbonate
Degree, then through carbon dioxide cleaner（2）Process by bicarbonate conversion into free carbon dioxide remove, to reduce carbonate alkalinity,
Afterwards, water quality is processed through adding alkali to adjust pH value（3）Afterwards（It is 10 or so to adjust pH value）Become counter-infiltration and enter saliva, then through anti-
Infiltration is except salt treatment（4）, make the anions and canons in water obtain certain clearance, this counter-infiltration is to run in an efficient manner, i.e.,
The rate of recovery need not add scale inhibition agent scale control treatments in 85-90% or so.Then, counter-infiltration product water enters one-level mixed bed（5）Enter
Row then enters back into two grades of mixed beds except salt treatment（6）Carry out further except salt treatment, produce reach grade II desalted water water quality will
The demineralized water asked.
As shown in Fig. 2 the connection of two-stage mixed bed with the method for operation is：
Counter-infiltration product water enters valve A（7）With one-level mixed bed（5）, then through valve D（10）Into two grades of mixed beds（6）,
Water is produced through valve E（11）To grade II desalted water case.
Counter-infiltration product water enters valve B（8）With two grades of mixed beds（6）, then through valve F（12）Into one-level mixed bed（5）,
Produce water and enter valve C（9）To grade II desalted water case.
The present invention realizes the high performance operating mode of counter-infiltration in the following way：
A. by preposition weakly acidic cation exchanger and carbon dioxide cleaner realizing the antiscale purpose of efficient counter-infiltration.Weak acid sun
Ion-exchanger can go carbonate hardness in eliminating water；In water, carbonate alkalinity can be removed by carbon dioxide cleaner.By this two
Technique, can exempt the antiscale purpose that antisludging agent is added in follow-up counter-infiltration.
B. by improving counter-infiltration entrance pH value（10.5～11.0）To realize the antiscale of silicate in water.Silica
Solubility increases with the increase of pH value, in designing and running control reverse osmosis concentrated water in silicon limting concentration under corresponding pH value
.
C. biological pollution is also avoiding by improving pH value.Bacterium, virus, spore under high ph-values service condition
Son and endotoxin are dissolved and saponification, and organic matter is emulsified or is saponified, and are able to exempt pollution.
The present invention realizes the high performance operating mode of two-stage mixed bed in the following way：
When a. running, reverse osmosis produced water first passes through one-level mixed bed, then carries out deep desalting through two grades of mixed beds again, raw
Output grade II desalted water.Or then reverse osmosis produced water carries out deep desalting through one-level mixed bed again, produces through two grades of mixed beds
Grade II desalted water.
B. the water that one-level mixed bed is processed is reverse osmosis produced water, and water ions content is higher than the water that two grades of mixed beds are processed, i.e.,
The product water of this one-level mixed bed is the water that two grades of mixed beds are processed, so one-level mixed bed will be prior to two grades of mixed beds failures in operation.Now,
System is out of service, and one-level mixed bed carries out regenerative operation.And two grades of mixed beds now then do not carry out regeneration process.
C., after the regeneration process of one-level mixed bed is qualified, one-level mixed bed continues to put into operation with two grades of mixed beds, but now needs this
Two-stage mixed bed operation order is done one and is overturned, and two for will having run grade mixed bed is arranged as prime mixed bed, has been regenerated
One-level mixed bed is run as rear class mixed bed after being connected on former two grades of mixed beds, and the purpose of do so is on the one hand ensure water outlet
Water quality reaches the requirement of grade II desalted water, and the mixed bed for newly having regenerated is located at rear class to be provided safeguard for producing water water quality；On the other hand
It is in reasonable period with regenerative operation also for the operation of two-stage mixed bed is made.Otherwise, one-level mixed bed is due to water to be processed
Matter will much worse than two grades of mixed beds, one-level mixed bed often will several times after spent regeneration two grades of mixed beds could spent regenerations once, then this
Two grades of mixed beds can cause resin caking in bed due to long operational time, produce the harm such as bias current or biological pollution.Two grades of mixed beds are
Long-play is not allowed to, is all not etc. not produce water index and reach failure just to regenerate in advance, i.e., under same acid, alkali regeneration dosage
Mixed bed water production in periodic mode is reduced, and causes operation uneconomical.If taking the mode of operation alternate with each other to two-stage mixed bed, can make
All in maximum functional exchange capacity, water production in periodic mode is maximum reaching the purpose of Effec-tive Function for the resin of two-stage mixed bed.
D. two-stage mixed bed alternate run mode is as follows with valve opening, the corresponding relation closed：
Reverse osmosis produced water（4）→ valve A (7) → one-level mixed bed (5) → valve D (10) → bis- grade mixed bed (6) → valve E
(11) → grade II desalted water
Valve opening：Valve A (7), valve D (10), valve E (11)
Valve closing：Valve B (8), valve C (9), valve F (12)
Reverse osmosis produced water (4) → valve B (8) → bis- grade mixed bed (6) → valve F (12) → one-level mixed bed (5) → valve C
(9) → grade II desalted water
Valve opening：Valve B (8), valve F (12), valve C (9)
Valve closing：Valve A (7), valve D (10), valve E (11)
One-level mixed bed, two grades of mixed beds are all the time and must be while series operation.One-level and two grades of mixed beds when running first
Series operation simultaneously.After having failure regenerative operation, the mixed bed run just is arranged to prime mixed bed, the mixed bed quilt for newly having regenerated
It is rearmounted for rear class mixed bed, it is being above prime to come（One-level）, be connected on below for rear class (two grades), prime is mixed with rear class
Bed is without permanent order.
E. one-level mixed bed A (5) and two grades of mixed beds B（6）Bed body design, device parameter and resin model, resin loadings,
What the aspects such as regeneration parameter, regenerative system were just as.One-level shares a set of regenerative system with two grades of mixed beds.
According to situations such as raw water quality analysis and the product water index for needing to reach, according to Mathematical Modeling and operating experience etc. really
Determine weakly acidic cation exchanger operation and Regeneration control parameter, counter-infiltration operational parameter control（It is main including adjusting into saliva pH
The controlling value of value）, the index such as one-level mixed bed operational failure and Regeneration control parameter, two grades of mixed bed Regeneration control parameters.
Claims (1)
1. the operation method of the desalination processing system that reverse osmosis membrane is combined with ion-exchanger, it is characterised in that：The system
Include the weakly acidic cation exchanger and its regenerative system, carbon dioxide cleaner, counter-infiltration system, one-level mixed bed and two grades being sequentially connected
Mixed bed, one-level mixed bed replace series operation all the time simultaneously with two grades of mixed beds, are provided with plus alkali between carbon dioxide cleaner and counter-infiltration system
Alkalization system；
The operation method is comprised the following steps：
Weakly acidic cation exchanger is first passed through without the water of desalination carries out ion-exchange treatment, to remove carbonate hardness, then
Through carbon dioxide cleaner process by bicarbonate conversion into free carbon dioxide remove, to reduce carbonate alkalinity, afterwards, water quality Jing
Cross plus alkali to be adjusted pH value is adjusted to 10 after pH value is processed to become counter-infiltration and enters saliva, then counter-infiltration is obtained through reverse-osmosis treated
Water is produced, makes the anions and canons in water obtain certain removal, then, reverse osmosis produced water is carried out except salt treatment into one-level mixed bed,
Then entering back into two grades of mixed beds is carried out further except salt treatment, produces the demineralized water for reaching grade II desalted water water quality requirement；
The water of one-level mixed bed process is reverse osmosis produced water, and water ions content is higher than the water that two grades of mixed beds are processed, i.e. this one-level
The product water of mixed bed is the water that two grades of mixed beds are processed, so one-level mixed bed will be prior to two grades of mixed beds failures in operation；Now, system is stopped
Only run, one-level mixed bed carries out regenerative operation, and two grades of mixed beds now then do not carry out regeneration process；
After the regeneration process of one-level mixed bed is qualified, one-level mixed bed continues to put into operation with two grades of mixed beds, but now needs to mix this two-stage
Bed operating order is done one and is overturned, and two for will having run grade mixed bed is arranged as prime mixed bed, and the one-level for having regenerated is mixed
Bed is run as rear class mixed bed after being connected on former two grades of mixed beds；
One-level mixed bed is with two grades of mixed beds in bed body design, device parameter and resin model, resin loadings, regeneration parameter, regeneration
What system was just as；One-level mixed bed shares a set of regenerative system with two grades of mixed beds.
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| CN201410700283.0A CN104445736B (en) | 2014-10-12 | 2014-11-28 | Desalination processing system and its method for operation that reverse osmosis membrane is combined with ion-exchanger |
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| CN2014105339587 | 2014-10-12 | ||
| CN201410533958 | 2014-10-12 | ||
| CN201410700283.0A CN104445736B (en) | 2014-10-12 | 2014-11-28 | Desalination processing system and its method for operation that reverse osmosis membrane is combined with ion-exchanger |
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| WO2016162290A1 (en) * | 2015-04-07 | 2016-10-13 | Sabic Global Technologies B.V. | Method of purifying wastewater from an abs emulsion polymerization process |
| CN107055866A (en) * | 2017-04-20 | 2017-08-18 | 东莞市金唐水处理设备有限公司 | A kind of sewage treatment system with zero discharge and its handling process |
| RU2655995C1 (en) * | 2017-11-21 | 2018-05-30 | Иван Андреевич Тихонов | Water distillation method (options) |
| CN109824168B (en) * | 2019-03-05 | 2024-02-23 | 华电水务科技股份有限公司 | Nitrogen-containing concentrated salt wastewater treatment device |
| CN110550789B (en) * | 2019-08-14 | 2024-04-05 | 东莞市金唐水处理设备有限公司 | Semiconductor pure water treatment system |
| CN114291937A (en) * | 2022-01-18 | 2022-04-08 | 山东金泽水业科技有限公司 | Composite ion exchange-reverse osmosis coupled advanced water treatment system and process |
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| JPS61103594A (en) * | 1984-10-26 | 1986-05-22 | Ebara Infilco Co Ltd | Manufacture of extremely pure demineralized water |
| CN201873580U (en) * | 2010-08-23 | 2011-06-22 | 西安华新能源工程有限公司 | Makeup water treatment system for silicon iron waste heat generating boiler |
| CN102139235B (en) * | 2010-12-30 | 2012-07-25 | 中国铝业股份有限公司 | Method for regenerating ion exchange resin of reverse osmosis rear secondary mixed bed |
| CN102659264B (en) * | 2012-05-22 | 2014-01-01 | 麻克栋 | Ion exchange pretreatment method of softened/demineralized water |
| CN103496806A (en) * | 2013-10-15 | 2014-01-08 | 中国华电工程(集团)有限公司 | System and method for manufacturing demineralized water |
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Inventor after: Wu Zhe Inventor after: Wu Hui Inventor after: Pan Hao Inventor after: Yang Shaocai Inventor after: Zhou Duo Inventor after: Hou Yabo Inventor after: Miao Yu Inventor before: Wu Zhe Inventor before: Wu Hui Inventor before: Yang Shaocai Inventor before: Zhou Duo Inventor before: Hou Yabo Inventor before: Miao Yu |
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