CN109133265A - Mixed-bed resin regenerant salt method for treating water - Google Patents
Mixed-bed resin regenerant salt method for treating water Download PDFInfo
- Publication number
- CN109133265A CN109133265A CN201810789878.6A CN201810789878A CN109133265A CN 109133265 A CN109133265 A CN 109133265A CN 201810789878 A CN201810789878 A CN 201810789878A CN 109133265 A CN109133265 A CN 109133265A
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- CN
- China
- Prior art keywords
- water
- valve
- mixed
- bed
- resin
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention belongs to water-treatment technology fields, and in particular to a kind of mixed-bed resin regenerant salt method for treating water.It is entirely ineffective as to reach yin and yang resin, we, which take, is passed through mixed bed with 4~8% saline solution (or alkaline saline solution), flow control is in 5m/h or so, time of contact controlled at 30 minutes, recruitment factory atmosphere is cleaned after ten minutes again, being rinsed with water to water outlet is neutrality, then carries out mixed bed regeneration by regular regeneration sequence.By using mixed-bed resin regenerant salt method for treating water of the invention, so that yin, yang resin is thoroughly failed, be easier to be layered, cross contamination when reducing regeneration, to improve yin, yang resin regeneration efficiency.Rise to the mixed bed cycle of operation 80 hours or so within 30 hours or so from operation.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of mixed-bed resin regenerant salt method for treating water.
Background technique
The ion exchange resin that water treatment field uses is high-molecular compound, its structure is divided into two parts, a part
It is the skeleton formed with macromolecule, another part is cation exchange groups of the chemical combination on macromolecular scaffold.Cation exchange groups have dissociable
Zwitterion, for cation exchange resin if what is dissociated is cation；If what is dissociated is anion
For anion exchange resin.Mixed bed is the water treatment facilities that anion-cation exchange resin is housed simultaneously.
Due to yin, yang resin be mutually mixed to be equivalent to numerous yin, yang beds together and be arranged together operation, and
The exchange of anions and canons carries out simultaneously, and according to reckoning, a mixed bed about includes that the level-one of 1000-2000 group answers bed.It is with one
The multiple bed of grade is different, and the cation bed water outlet that level-one answer bed desalination is all the salt in raw water to be exchanged for corresponding acid, and sour ionize out
H+ ion will affect to be exchanged with cation in water, and is also swapped to RNa type ion remaining on resin, is made to be discharged
In contain certain Na+.The Na+ of leakage can make water outlet containing NaOH again after anion bed, and the OH+ ion equally ionized out is again to yin
The remaining HSiO3 type resin of resin regeneration is regenerated, so that the water outlet of anion bed be made always to contain certain SiO2.And mixed bed is then not
Equally, neutralization reaction occurs rapidly for the OH-ion that the H+ ion and anion bed that cation bed displaces displace, and carries out reaction very
Completely, therefore effluent quality is fine.
Reaction equation is as follows: RH+ROH+NaCl → RNa+RCl+H2O。
When the water containing zwitterion passes through resin layer, the zwitterion in water can be adsorbed to cation and anion exchange tree
On rouge, and the zwitterion on resin, it will dissociate into water, to complete exchange ion and changing by exchange ion
Position process, achievees the purpose that zwitterion in water removal.
When mixed bed outlet, conductivity is greater than the set value, it is believed that mixed bed failure needs to regenerate.Mixed bed regenerates most critical
One step is resin backwash layering, and the quality of resin layering directly determines regenerated success or not；Influence resin backwash layering because
It is known as:
1, the defect on mixed bed equipment making；,
2, visor transparent effect is bad；
3, the size in mixed bed backwash space；
4, the failure degree etc. of yin and yang resin；
It is known that the quality of resin layering, is determined by the failure degree of yin and yang resin.
Summary of the invention
The present invention causes mixed bed backwash layering bad, regeneration is not achieved to solve since yin and yang resin is not entirely ineffective
Effect, so that the technical problem for influencing mixed bed runing time provides a kind of mixed-bed resin regenerant salt method for treating water, particular technique
Scheme is as follows:
A kind of mixed-bed resin regenerant salt method for treating water, it is entirely ineffective as to reach yin and yang resin, and we take with 4~
8% saline solution (or alkaline saline solution) is passed through mixed bed, and flow control is controlled in 5m/h or so, time of contact at 30 minutes, then
Recruitment factory atmosphere is cleaned after ten minutes, and being rinsed with water to water outlet is neutrality, then carries out mixed bed regeneration by regular regeneration sequence.
Beneficial effects of the present invention
By using mixed-bed resin regenerant salt method for treating water of the invention, yin, yang resin is made thoroughly to fail, is easier to point
Layer, cross contamination when reducing regeneration, to improve yin, yang resin regeneration efficiency.Make the mixed bed cycle of operation from 30 hours left sides of operation
Upper right is raised to 80 hours or so.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
Mixed bed regenerates usual operating procedure
1. backwash is layered: backwash inlet valve, backwash outlet valve are opened, flow 120t/h, the time 30 minutes.
2. denidation: all valves close entirely.Time 10 minutes.
3. discharging water: just washing drain valve, exhaust valve open, 6 minutes time
4. into acid, alkali: acid inlet valve, middle valve, alkali-feeding valve are opened, acid dilution water valve, sour outlet valve, basic dilution water valve, and alkali goes out
Mouthful valve opens basic dilution water flow 32t/h, and adjusting into alkali concentration is 4%, and the time 40 minutes.Sour dilution water flow 30t/h, adjustment
Into acid concentration be 5%, the time 35 minutes.
5. displacement: acid inlet valve, middle valve, alkali-feeding valve, acid dilution water valve, basic dilution water valve are opened, and are closed sour measuring tank acid and are gone out
Mouth valve, closing alkali measuring tank alkali outlet valve, the time 60 minutes or more.
6. water filling: inlet valve, exhaust valve open are transferred to lower step after exhaust valve water outlet.
7. negative resin is just washed: inlet valve, middle valve are opened, and valve, which goes out when water ph value is approximately equal to 7, in the middle is transferred to lower step.Time 15
Minute.
8. yin and yang resin is just washed: inlet valve is just being washed drain valve and is being opened, and goes out when water ph value is approximately equal to 7 to be transferred to when just washing drain valve
Lower step.Time 15 minutes.
9. draining: exhaust valve is just being washed drain valve and is being opened.Time 6 minutes.Lower step is transferred to when water drains into 200mm on resin layer.
10. mixed rouge: intake valve, exhaust valve open, the time 30~40 minutes, air pressure 0.35-0.4MPa.
11. draining mixed rouge: intake valve, middle valve, exhaust valve open, when water, which drains into resin layer, no longer to be stirred, air inlet is closed
Valve, middle valve opening just washes drain valve, when just wash drain valve it is anhydrous when carry out in next step, the time 5~10 minutes.
12. water-filling: driving water valve, exhaust valve into, flow 96-184t/h is transferred to lower step, time 5~10 after exhaust valve water outlet
Minute.
13. just washing: it drives water valve into, just wash drain valve, flow 96-184t/h, 30 minutes.When just washing middle level-one mixed bed SiO2
< 100ug/L, conductance < 5us/cm, second level mixed bed SiO2 < 20ug/L, conductance < 0.3us/cm are just washing qualification and are being transferred to lower step.
14. spare: all valves close entirely.
Embodiment 1
Level-one mixed bed conductance≤5us/cm；SiO2≤100ug/1, second level mixed bed conductance≤0.3us/cm；SiO2≤20ug/
1。
According to level-one mixed bed run actual conditions, for reduce level-one mixed bed SiO2 leakage, by level-one mixed bed by original
Carry out conductance≤5us/cm, when being changed to conductance to 0.5us/cm, can judge that the mixed bed is regenerated for failure.Level-one 1#, 2#, 3#
Mixed bed is run 20 hours or so, is discharged SiO2 up to less than index.5# mixed bed runing time was at 20 to 30 hours, after regeneration 15 times
After conductance regeneration between 2-4us/cm, SiO2 is discharged up to less than index.4# mixed-bed resin has just been replaced soon, is run 30 hours
Left and right is discharged SiO2 up to less than index.
After improvement, alkali metering first is added in configured 4~8% saline solution (or alkaline saline solution) before mixed bed regeneration
Tank opens mixed bed alkali-feeding valve, just washes drain valve, basic dilution water valve, and alkali outlet valve starts shipment personal pump for 4~8% saline solution
(or alkaline saline solution) is passed through mixed bed and impregnates yin and yang resin, and flow control is controlled in 5m/h or so, time of contact at 30 minutes.
Begin to rehearse air valve, just wash drain valve, when water drains into 200mm on resin layer close just washing drain valve, open intake valve, air pressure
In 0.35-0.4MPa, recruitment factory atmosphere is cleaned after ten minutes, and intake valve is closed for control, opens inlet valve, when inlet valve is discharged
Afterwards, it opens and is just washing drain valve closing intake valve.It is rinsed with water after being neutral to water outlet, carries out mixed bed again by regular regeneration sequence
It is raw.
Regenerated level-one mixed bed runing time is average at 70 to 90 hours after processing, and SiO2 is attained by index.Not only
Regeneration labor intensity substantially reduces, while decreasing the dosage of soda acid and the waste of resin.
Claims (1)
1. a kind of mixed-bed resin regenerant salt method for treating water, which comprises the steps of:
1) alkali measuring tank first is added in the saline solution of configured 4~8wt% or alkaline saline solution；
2) opening mixed bed alkali-feeding valve starts personal pump for the saline solution of 4~8wt% or alkaline saline solution and is passed through mixed bed immersion yin
Positive resin, flow control are controlled in 5m/h, time of contact at 30 minutes；
3) begin to rehearse air valve, just wash drain valve, when water drains into 200mm on resin layer, closing just washing drain valve, open intake valve,
In 0.35-0.4Mpa, recruitment factory atmosphere clean 10 minutes air-pressure controlling, closes intake valve；
4) inlet valve is opened, being rinsed with water to water outlet is neutrality, and opening just washes drain valve；
5) mixed bed regeneration is carried out by regular regeneration sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789878.6A CN109133265A (en) | 2018-07-18 | 2018-07-18 | Mixed-bed resin regenerant salt method for treating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789878.6A CN109133265A (en) | 2018-07-18 | 2018-07-18 | Mixed-bed resin regenerant salt method for treating water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109133265A true CN109133265A (en) | 2019-01-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810789878.6A Pending CN109133265A (en) | 2018-07-18 | 2018-07-18 | Mixed-bed resin regenerant salt method for treating water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180604A (en) * | 2019-03-29 | 2019-08-30 | 山西太钢不锈钢股份有限公司 | Mixed bed regeneration method |
| CN111905842A (en) * | 2020-08-21 | 2020-11-10 | 四川省宜宾惠美线业有限责任公司 | Method for treating poisoned anion resin |
| CN116371480A (en) * | 2023-04-04 | 2023-07-04 | 华能山东发电有限公司白杨河发电厂 | Regeneration method for desalted water system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002084230A1 (en) * | 2001-04-16 | 2002-10-24 | Usf Consumer & Commercial Watergroup, Inc. | Automatic salt level monitor for a water softening device |
| CN106587426A (en) * | 2016-12-14 | 2017-04-26 | 龙正环保股份有限公司 | Commissioning method of steam boiler make-up water system |
-
2018
- 2018-07-18 CN CN201810789878.6A patent/CN109133265A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002084230A1 (en) * | 2001-04-16 | 2002-10-24 | Usf Consumer & Commercial Watergroup, Inc. | Automatic salt level monitor for a water softening device |
| CN106587426A (en) * | 2016-12-14 | 2017-04-26 | 龙正环保股份有限公司 | Commissioning method of steam boiler make-up water system |
Non-Patent Citations (2)
| Title |
|---|
| 宋业林: "《水处理技术问答》", 31 July 2002, 中国石化出版社 * |
| 百度知道: "《混床阴阳树脂分层困难的原因是什么》,site:https://zhidao.baidu.com/question/256612459.html", 《混床阴阳树脂分层困难的原因是什么》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180604A (en) * | 2019-03-29 | 2019-08-30 | 山西太钢不锈钢股份有限公司 | Mixed bed regeneration method |
| CN111905842A (en) * | 2020-08-21 | 2020-11-10 | 四川省宜宾惠美线业有限责任公司 | Method for treating poisoned anion resin |
| CN116371480A (en) * | 2023-04-04 | 2023-07-04 | 华能山东发电有限公司白杨河发电厂 | Regeneration method for desalted water system |
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Application publication date: 20190104 |