CN1773279A - Method for determining ion exchange resin saturating point - Google Patents
Method for determining ion exchange resin saturating point Download PDFInfo
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- CN1773279A CN1773279A CN 200510030900 CN200510030900A CN1773279A CN 1773279 A CN1773279 A CN 1773279A CN 200510030900 CN200510030900 CN 200510030900 CN 200510030900 A CN200510030900 A CN 200510030900A CN 1773279 A CN1773279 A CN 1773279A
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Abstract
The present invention relates to a method for judging saturation point of ion exchange resin by using pH measurement technology. It is characterized by that said method includes the following steps: mounting pH sensor in the water outlet of exchange column of ion exchange resin; raw water is flowed through the exchange column, the ions to be removed can be adsorbed by ion exchange resin in the exchange column interior, then all the raw water or partial raw water can be passed through pH sensor; pH sensor can make the measured signal be transferred to pH measurement control instrument, said pH measurement control instrument can be used for monitoring pH value, when the pH value is reached to some value in the pH range and retained for a certain time period, the pH measurement control instrument can indicate that the said ion exchange resin is reached to saturation point, and said ion exchange resin has need of making regeneration.
Description
Technical field
The present invention relates to a kind of ion-exchange water technology, relate in particular to a kind of method of judging ion exchange resin saturating point.
Background technology
Ion-exchange is a kind of water technology commonly used, adopts this technology can adsorb the impurity of removing in the water, as pure water preparation; Utility in also can the enrichment condensed water is as reclaiming metal from waste water.Ion exchange resin has certain operating capacity, and resin reaches saturation point when the total ion concentration of resin adsorption equals operating capacity, loses the ability that continues absorption.Therefore judge in time, exactly that saturation point is very important for the utilization factor of effective work of ion exchange resin and resin.
The common method of judging resin saturating point at present mainly contains:
A. from the entery and delivery port sample analysis of ion-exchange unit by the concentration of exchange ion, show when concentration is identical that resin is saturated;
B. in the variation of the coloured ion of absorption time range estimation color of resin,, show that resin is saturated when resin during into and out of the color basically identical of water end (W.E.);
C. in the pure water preparation process, use conductivity (or resistivity) Meter Test ion-exchange unit to go out water conductivity (or resistivity) and judge resin saturating point.
The advantage of method a is that more accurate to the judgement of resin saturating point, its shortcoming is need to be equipped with expensive analytical instrument, and analytic process need spend long time and analysis cost;
The advantage of method b is, judgement to resin saturating point is easier, directly perceived, cost is low, its shortcoming is that dependence sense organ and experience judgment accuracy are relatively poor, and inapplicable for the exchange of colourless ion, also inapplicable the method when exchange column is the opaque material making;
The advantage of method c is, the comprehensive resin failpoint of judging multiple bed pure water preparation equipment, and instrument is fairly simple, and its shortcoming is that conductivity (or resistivity) can not reflect positive resin and negative resin which is earlier saturated; Yet the proportioning for preparing yin and yang resin in the pure water process in ion-exchange is difficult to reach fully balance, often be that a kind of resin is earlier saturated, conductivity this moment (or resistivity) can not in time reflect the variation of water outlet pH value, causes the underproof water of pH value to enter the water operation, influences product quality.
Summary of the invention
The object of the present invention is to provide a kind of method of judging ion exchange resin saturating point, it can be widely used in the judgement of the ion exchange resin saturating point in the various employing ion-exchange water technologies, and can judge the saturation point of ion exchange resin accurately, in real time, easily, with validity and the effective rate of utilization that improves resin and the efficiency of management of equipment that guarantees ion exchange process, for the timely regeneration of resin provides basis for estimation.
The object of the present invention is achieved like this:
A kind of method of using pH measuring technique judgement ion exchange resin saturating point is used to adopt ion exchange process to handle waste water, reclaims metal and pure water preparation; Be characterized in: the step of judging ion exchange resin saturating point comprises:
Step a installs the pH sensor at the water delivering orifice of the exchange column that ion exchange resin is housed;
Step b, former current are through exchange column, and the ion that remove is by the absorption of the ion exchange resin in the exchange column, all or part of then pH sensor of flowing through;
Step c, the pH sensor is transferred to the pH measuring and controlling instrument with the signal that measures, and the pH measuring and controlling instrument shows pH numerical value;
Steps d, the pH measuring and controlling instrument monitors pH numerical value, along with the pH value of carrying out of ion exchange process changes, when numerical value that the pH measuring and controlling instrument monitors reaches some values in the pH scope of setting, and after keeping a period of time, the indication of pH measuring and controlling instrument, the adsorptive power of this ion exchange resin exhausts, reach saturation point, need regeneration.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, in described steps d, when the present invention is used for weak-acid cation-exchange resin when nickel-plating waste water reclaims the application of nickel and other metalloids, the pH value that described pH measuring and controlling instrument records is lower than the 7 some values that are higher than in 4 the scope, and after stable 1-24 hour, the indication of this pH measuring and controlling instrument, the resin in this exchange column has been saturated to need regeneration.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, described nickel and other metalloids of from nickel-plating waste water, reclaiming, this metalloid is one of following metal: copper, zinc, chromium, gold, silver, palladium.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, when the multiple bed ion-exchange that is used for being composed in series by strong-acid cation-exchange resin and strong basic anion-exchange resin as the present invention prepares the application of pure water process,
In described step a, described pH sensor is arranged on the water delivering orifice of cation exchange column;
In described steps d, described pH measuring and controlling instrument records the pH value and is higher than the 2 some values that are lower than in 4 the scope, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and the Zeo-karb in this exchange column has been saturated to need regeneration.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, when the present invention is used for being composed in series the ion-exchange of multiple bed when preparing the application of pure water process by strong-acid cation-exchange resin and strong basic anion-exchange resin,
In described step a, described pH sensor is arranged on the water delivering orifice of anion-exchange column;
In described steps d, described pH measuring and controlling instrument records the pH value and is lower than the 7 some values that are higher than in 4, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and this anion exchange resins has been saturated to need regeneration; The pH value that records when instrument is higher than the some values among the 9-10, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and showing that Zeo-karb is saturated needs regeneration.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, when the present invention is used for the application of mixed bed pure water preparation process of mixing anion and cation exchange resin,
In described step a, described pH sensor is arranged on the water delivering orifice that mixes the bed exchange column;
In described steps d, described pH measuring and controlling instrument records the normal range of operation that the pH value exceeds 4-9, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, anion exchange resins or Zeo-karb in this exchange column are saturated, and resin needs regeneration in the mixed bed.
In the method for above-mentioned judgement ion exchange resin saturating point, wherein, described determination methods is applicable to the process of anion exchange resins adsorpting anion.
The present invention judges the method for ion exchange resin saturating point owing to adopted above-mentioned technical scheme, makes it compared with prior art, has following advantage and good effect:
1. the present invention is owing to be provided with the pH sensor in ion exchange column water outlet place, by the pH measuring and controlling instrument monitoring water outlet pH value that is connected with the pH sensor, the numerical value that is higher or lower than setting when the pH value is that the ion exchange resin in this ion exchange column of decidable reaches saturation point, the pH measuring and controlling instrument is sent alerting signal simultaneously, and prompting operation person or opertaing device are regenerated to saturated resin; This shows that method of the present invention need not the saturation point that complicated analytical equipment can visual and accurately be judged ion exchange resin absorption, therefore can be widely used in the application that the employing ion exchange process is handled waste water, reclaimed metal and pure water preparation;
2. the present invention is because the pH sensor is arranged on ion exchange column water outlet place and is connected with the pH measuring and controlling instrument, so it can judge the saturation point of ion exchange resin in time, and the utilization factor of ion exchange resin is improved greatly;
3. therefore the present invention can send the resin saturation signal accurately and timely owing to the variation that detects ion exchange column water outlet pH value by on-line continuous, for regeneration of resin provides foundation, has improved the efficiency of management;
4. the used method of the present invention not only goes for ion exchange resin absorption metallic nickel ions Ni
2+, be equally applicable to ion exchange resin absorption metallic copper, zinc, iron, aluminium, calcium, magnesium, potassium ion, have the application scenario of broad.
Embodiment
The present invention, a kind of method of using pH measuring technique judgement ion exchange resin saturating point is used to adopt ion exchange process to handle waste water, reclaims metal and pure water preparation; The present invention judges that the step of ion exchange resin saturating point comprises:
Step a installs the pH sensor at the water delivering orifice of the exchange column that ion exchange resin is housed;
Step b, former current are through exchange column, and the ion that remove is by the absorption of the ion exchange resin in the exchange column, all or part of then pH sensor of flowing through;
Step c, the pH sensor is transferred to the pH measuring and controlling instrument with the signal that measures, and the pH measuring and controlling instrument shows pH numerical value;
Steps d, the pH measuring and controlling instrument shows pH numerical value, along with the pH value of carrying out of ion exchange process changes, when numerical value that the pH measuring and controlling instrument shows is higher or lower than some values in the pH scope of setting, and after a period of stabilisation, the indication of pH measuring and controlling instrument, the adsorptive power of this ion exchange resin exhausts, reach saturation point, need regeneration.
Embodiment one
Present embodiment reclaims application in the nickel for the present invention in ion exchange process from nickel-plating waste water.Concrete steps are:
Nickel-containing waste water from the nickel plating production line is admitted to the ion exchange column that weak-acid cation-exchange resin is housed; The pH sensor is equipped with in the exit of ion exchange column, and the pH value of follow-on test water outlet changes; The pH sensor is connected with pH measuring and controlling instrument table; When pH value that instrument records less than the some values in the scope of 4-7 (accurately numerical value decide on former regimen condition) and after stablize 1-24 hour, this pH measuring and controlling instrument indication, this exchange column interior resin saturated needs regenerates.In order to prevent that the nickel ion that resin leaks before fully saturated runs off, and has the same exchange column series connection more than 1 or 1 thereafter the nickel ion that leaks to be adsorbed to fall usually.
The determination methods of the foregoing description one is equally applicable to Zeo-karb and reclaims other metallic ions, comprises copper, zinc, chromium, gold, silver, palladium or the like.
Embodiment two
Present embodiment prepares application in the pure water process for the present invention in the ion-exchange of multiple bed.Concrete steps are:
Multiple bed ion exchange pure water equipment is composed in series by strong-acid cation-exchange resin and strong basic anion-exchange resin; In the present embodiment, at the water delivering orifice of cation exchange column the pH sensor is installed, the pH value of follow-on test water outlet changes; The pH sensor is connected with pH measuring and controlling instrument table; When pH value that instrument records is higher than some values (accurate numerical value decide on former regimen condition) in the scope of 2-4, and when stablizing more than 5 minutes, this pH measuring and controlling instrument indication, the Zeo-karb in this exchange column is saturated, needs to regenerate.
Embodiment three
Present embodiment prepares application in the pure water process for the present invention in the ion-exchange of multiple bed.Concrete steps are:
Multiple bed ion exchange pure water equipment is composed in series by strong-acid cation-exchange resin and strong basic anion-exchange resin; In the present embodiment, at the water delivering orifice of anion-exchange column the pH sensor is installed, the pH value of follow-on test water outlet changes; The pH sensor is connected with the pH measuring and controlling instrument; When pH measuring and controlling instrument monitoring pH value is lower than 4-5 and after a period of stabilisation, this pH measuring and controlling instrument indication, the anion exchange resins in this anion-exchange column saturated needs regenerates; The pH value that records when instrument is higher than 9-10 and after a period of stabilisation, and showing that Zeo-karb is saturated needs regeneration.
Embodiment four
Present embodiment is the application of the present invention in the mixed bed pure water preparation process of mixing anion and cation exchange resin.Concrete steps are:
In the present embodiment, the pH sensor is arranged on and mixes bed exchange column water delivering orifice, the pH measuring and controlling instrument records the pH value and exceeds the normal range of operation of 4-9 and stablize more than 5 minutes, this pH measuring and controlling instrument indication, anion exchange resins or Zeo-karb in this exchange column are saturated, and the resin that mixes in the bed needs regeneration.
In sum, the present invention judges the method for ion exchange resin saturating point, owing to the pH sensor is set in ion exchange column water outlet place, by the pH measuring and controlling instrument monitoring water outlet pH value that is connected with the pH sensor, the numerical value that is higher or lower than setting when the pH value is that the ion exchange resin in this ion exchange column of decidable reaches saturation point, and the pH measuring and controlling instrument is sent the alerting signal instruction saturated resin is regenerated simultaneously; This shows that method of the present invention need not the saturation point that complicated analytical equipment can visual and accurately be judged ion exchange resin absorption; Simultaneously, can judge the saturation point of ion exchange resin in time, the utilization factor of ion exchange resin is improved greatly; And, can be widely used in and adopt ion exchange process to handle the application of waste water, recovery metal and pure water preparation; Therefore very practical.
Claims (7)
1. use the method that the pH measuring technique is judged ion exchange resin saturating point for one kind, be used to adopt ion exchange process to handle waste water, reclaim metal and pure water preparation; It is characterized in that: the step of judging ion exchange resin saturating point comprises:
Step a installs the pH sensor at the water delivering orifice of the exchange column that ion exchange resin is housed;
Step b, former current are through exchange column, and the ion that remove is by the absorption of the ion exchange resin in the exchange column, all or part of then pH sensor of flowing through;
Step c, the pH sensor is transferred to the pH measuring and controlling instrument with the signal that measures, and the pH measuring and controlling instrument shows pH numerical value;
Steps d, the pH measuring and controlling instrument monitors pH numerical value, along with the pH value of carrying out of ion exchange process changes, when numerical value that the pH measuring and controlling instrument monitors reaches some values in the pH scope of setting, and after keeping a period of time, the indication of pH measuring and controlling instrument, the adsorptive power of this ion exchange resin exhausts, reach saturation point, need regeneration.
2. the method for judgement ion exchange resin saturating point as claimed in claim 1, it is characterized in that: in described steps d, when the present invention is used for weak-acid cation-exchange resin when nickel-plating waste water reclaims the application of nickel and other metalloids, the pH value that described pH measuring and controlling instrument records is lower than the 7 some values that are higher than in 4 the scope, and after stable 1-24 hour, the indication of this pH measuring and controlling instrument, the resin in this exchange column has been saturated to need regeneration.
3. the method for judgement ion exchange resin saturating point as claimed in claim 1 or 2 is characterized in that: described nickel and other metalloids of reclaiming from nickel-plating waste water, this metalloid is one of following metal: copper, zinc, chromium, gold, silver, palladium.
4. the method for judgement ion exchange resin saturating point as claimed in claim 1 is characterized in that: when the multiple bed ion-exchange that is used for being composed in series by strong-acid cation-exchange resin and strong basic anion-exchange resin as the present invention prepares the application of pure water process,
In described step a, described pH sensor is arranged on the water delivering orifice of cation exchange column;
In described steps d, described pH measuring and controlling instrument records the pH value and is higher than the 2 some values that are lower than in 4 the scope, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and the Zeo-karb in this exchange column has been saturated to need regeneration.
5. the method for judgement ion exchange resin saturating point as claimed in claim 1 is characterized in that: when the present invention is used for being composed in series the ion-exchange of multiple bed when preparing the application of pure water process by strong-acid cation-exchange resin and strong basic anion-exchange resin,
In described step a, described pH sensor is arranged on the water delivering orifice of anion-exchange column;
In described steps d, described pH measuring and controlling instrument records the pH value and is lower than the 7 some values that are higher than in 4, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and this anion exchange resins has been saturated to need regeneration; The pH value that records when instrument is higher than the some values among the 9-10, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, and showing that Zeo-karb is saturated needs regeneration.
6. the method for judgement ion exchange resin saturating point as claimed in claim 1 is characterized in that: when the present invention is used for the application of mixed bed pure water preparation process of mixing anion and cation exchange resin,
In described step a, described pH sensor is arranged on the water delivering orifice that mixes the bed exchange column;
In described steps d, described pH measuring and controlling instrument records the normal range of operation that the pH value exceeds 4-9, and after stablizing 5 minutes, this pH measuring and controlling instrument indication, anion exchange resins or Zeo-karb in this exchange column are saturated, and resin needs regeneration in the mixed bed.
7. the method for judgement ion exchange resin saturating point as claimed in claim 1 is characterized in that: described determination methods is applicable to the process of anion exchange resins adsorpting anion.
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| CNB2005100309001A CN100343665C (en) | 2005-10-31 | 2005-10-31 | Method for determining ion exchange resin saturating point |
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| CNB2005100309001A CN100343665C (en) | 2005-10-31 | 2005-10-31 | Method for determining ion exchange resin saturating point |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101186356B (en) * | 2007-12-11 | 2011-06-15 | 上海轻工业研究所有限公司 | Absorption and regeneration separated nickel plating waste water reclaiming system |
| CN104159673A (en) * | 2011-12-13 | 2014-11-19 | 艺康美国股份有限公司 | Acid regeneration of ion exchange resins for industrial applications |
| CN107996939A (en) * | 2016-10-27 | 2018-05-08 | 红牛有限责任公司 | Pasteurization equipment with ion interchange unit and the method for running pasteurization equipment |
| CN109174211A (en) * | 2017-06-30 | 2019-01-11 | 上海轻工业研究所有限公司 | Device is monitored and controlled in the transition of ion exchange resin |
| CN109201124A (en) * | 2017-06-30 | 2019-01-15 | 上海轻工业研究所有限公司 | Method is monitored and controlled in the transition of ion exchange resin |
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| NL2027567B1 (en) * | 2021-02-16 | 2022-09-14 | Van Dijk Heating B V | Method and apparatus for reducing sodium content in cultivation water for plants and cultivation system comprising said apparatus |
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| CN1011403B (en) * | 1989-05-25 | 1991-01-30 | 清华大学 | Method for regeneration of ion exchanging resin by co2 |
| JP3276103B2 (en) * | 1995-12-27 | 2002-04-22 | オルガノ株式会社 | Method for evaluating performance of anion exchange resin and method for managing water treatment system by said method |
| JP3384946B2 (en) * | 1997-04-04 | 2003-03-10 | オルガノ株式会社 | Method for evaluating performance of anion exchange resin and apparatus used for the method |
| JP2000009703A (en) * | 1998-06-22 | 2000-01-14 | Japan Organo Co Ltd | Performance evaluation method for anion-exchange resin |
| JP4600617B2 (en) * | 2000-08-07 | 2010-12-15 | オルガノ株式会社 | Anion exchange resin performance evaluation method and apparatus, and condensate demineralizer |
| JP4229649B2 (en) * | 2002-07-11 | 2009-02-25 | オルガノ株式会社 | Cation exchange resin evaluation method and water treatment system management method using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101186356B (en) * | 2007-12-11 | 2011-06-15 | 上海轻工业研究所有限公司 | Absorption and regeneration separated nickel plating waste water reclaiming system |
| US9919935B2 (en) | 2011-12-13 | 2018-03-20 | Ecolab Usa Inc. | Acid regeneration of ion exchange resins for industrial applications |
| US9963361B2 (en) | 2011-12-13 | 2018-05-08 | Ecolab Usa Inc. | System employing ion exchange resin regenerated by acid |
| US9593028B2 (en) | 2011-12-13 | 2017-03-14 | Ecolab Usa Inc. | Urea sulfate and sodium chloride blend for regeneration of cation exchange resins |
| US9597679B2 (en) | 2011-12-13 | 2017-03-21 | Ecolab Usa Inc. | Integrated acid regeneration of ion exchange resins for industrial applications |
| US9764321B2 (en) | 2011-12-13 | 2017-09-19 | Ecolab USA, Inc. | Urea sulfate and sodium chloride blend for regeneration of cation exchange resins |
| CN104159673A (en) * | 2011-12-13 | 2014-11-19 | 艺康美国股份有限公司 | Acid regeneration of ion exchange resins for industrial applications |
| US10183288B2 (en) | 2011-12-13 | 2019-01-22 | Ecolab Usa Inc. | Method for using a softened acidic water source |
| US9556043B2 (en) | 2011-12-13 | 2017-01-31 | Ecolab Usa Inc. | Treating hard water using an acid salt-regenerated ion exchange resin |
| US10052625B2 (en) | 2011-12-13 | 2018-08-21 | Ecolab Usa Inc. | Acid regeneration of ion exchange resins for industrial applications |
| US10058858B2 (en) | 2011-12-13 | 2018-08-28 | Ecolab Usa Inc. | Integrated acid regeneration of ion exchange resins for industrial applications |
| US10092898B2 (en) | 2011-12-13 | 2018-10-09 | Ecolab Usa Inc. | Urea sulfate and sodium chloride blend for regeneration of cation exchange resins |
| CN107996939A (en) * | 2016-10-27 | 2018-05-08 | 红牛有限责任公司 | Pasteurization equipment with ion interchange unit and the method for running pasteurization equipment |
| CN109174211A (en) * | 2017-06-30 | 2019-01-11 | 上海轻工业研究所有限公司 | Device is monitored and controlled in the transition of ion exchange resin |
| CN109201124A (en) * | 2017-06-30 | 2019-01-15 | 上海轻工业研究所有限公司 | Method is monitored and controlled in the transition of ion exchange resin |
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