CN103803678A - Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method - Google Patents
Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method Download PDFInfo
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- CN103803678A CN103803678A CN201410088981.XA CN201410088981A CN103803678A CN 103803678 A CN103803678 A CN 103803678A CN 201410088981 A CN201410088981 A CN 201410088981A CN 103803678 A CN103803678 A CN 103803678A
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Abstract
The invention discloses an automatic control system and an automatic control method for treating heavy metal wastewater based on an ion-exchange resin method, wherein the system comprises an image collector, a color difference identifier, a first transmitter, a controller, a second transmitter, a relay and an upper computer; the image collector is used for collecting color images of the ion-exchange resin and transfers the color images to the color difference identifier, the color difference identifier extracts characteristics from the transferred color images and transmits the extracted characteristic values to the controller, the controller is used for carrying out comparative analysis on the received characteristic values and given reference contrast color characteristics, the analysis result is concluded and output through the transmitter, and finally, whether the resin needs to be regenerated is displayed on the upper computer and a regeneration program is executed through a valve which is controlled by the relay. The automatic control system and the automatic control method are capable of overcoming the problem that effluent exceeds standard due to lag of monitoring on the ion-exchange resin effluent, caused by an artificial reason; the computer is used for identifying the color change of the ion-exchange resin to determine an automatic saturation point, and therefore, stable and up-to-standard effluent quality is guaranteed.
Description
Technical field
The present invention relates to the technical field of wastewater treatment, particularly a kind of automatic control system and method for processing heavy metal wastewater thereby based on ion-exchange-resin process.
Background technology
In electroplating waste water treatment technology, ion-exchange-resin process have removal efficiency high, can concentration and recovery useful matter, the advantage such as simple, the processing ease of equipment, make the method practical application very extensive.But because ion-exchange-resin process is processed when heavy metal wastewater thereby, due to the situation that the reason such as hysteresis quality and manual operation of detecting instrument usually causes effluent quality to exceed standard, limit the universal of ion-exchange-resin process and promoted.Along with the raising of national environmental standard, the raising of especially heavy metal contamination emission standard, continual and steady qualified discharge is more and more important to enterprise.One of them very crucial step is exactly the saturation point that how to judge ion exchange resin, prevents that discharge beyond standards event from occurring.
The method that judges resin saturating point is less, is mostly that the variation characteristic after saturated according to ion exchange resin absorption is realized, and usual method has following three kinds:
Method one: the saturation point that judges ion exchange resin by analyzing the variation of concentration of heavy metal ion before and after ion exchange resin Inlet and outlet water.Judgment basis is in the time that the concentration of heavy metal ion in Inlet and outlet water is roughly equal, illustrates that resin reaches capacity.The method accuracy of judgement, but Analytical equipment costliness, analysis cost is higher, and analysis time is longer.
Method two: application pH measuring technology judges the saturation point of ion exchange resin.Its method is: at the exchange column water outlet that ion exchange resin is being housed, pH sensor is installed, the pH value of monitoring water outlet, when pH value reaches certain value in the pH scope of setting, and keeps after certain hour, illustrates that ion exchange resin reaches saturation point.But between water outlet pH value and water outlet heavy metal concentration, there is no linear relationship accurately, be difficult to accurately judge that by pH resin is saturated.
Method three: according to long-term production run experience, the colour-change of range estimation ion exchange resin or Inlet and outlet water water quality colour-change judge the saturation point of resin.The method simple, intuitive, but need operator's real time inspection, and the discharge beyond standards event that artificial origin causes frequently occurs.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art, with not enough, provides a kind of automatic control system of processing heavy metal wastewater thereby based on ion exchange method.
Another object of the present invention is to, a kind of control method of processing heavy metal wastewater thereby based on ion exchange method is provided.
In order to reach above-mentioned the first object, the present invention by the following technical solutions:
The automatic control system of processing heavy metal wastewater thereby based on ion-exchange-resin process, comprises image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter, rly. and upper computer; Described image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter and upper computer are linked in sequence, and described transmitter is also connected with rly., and image acquisition device is connected by optical cable with aberration identifier;
Described image acquisition device, gathers the color image of ion exchange resin for the timed interval according to setting, and the color image collecting by optical cable transmission to aberration identifier;
Described aberration identifier, carries out feature extraction for the color image that image acquisition device is transmitted, and the eigenwert of extracting transfers to controller;
Described controller, for the bench-marking color characteristic of the eigenwert receiving and setting is compared, judged result is exported with standard signal by transmitter;
Described upper computer, for showing whether resin needs regeneration.
Preferably, described image acquisition device is high-definition camera, and described high-definition camera is realized the automatic shooting of image, and carries out real-time Transmission to photographing picture signal.
Preferably, described aberration identifier extracts the image pixel component variance on column direction automatically, in the time that this variance yields is greater than inner setting benchmark, sends graphic information to controller.
Preferably, described controller, by the image pixel component variance of aberration identifier and the comparison of inner setting benchmark, in the time that this value is greater than setting benchmark, can think that resin is saturated, sends signal to controller, carries out valve conversion and reproducer.
In order to reach above-mentioned the second object, the present invention by the following technical solutions:
The method of processing the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process, comprises the steps:
S1, color after saturated to ion exchange resin Adsorption of Heavy Metals are carried out IMAQ with image acquisition device;
S2, according to the color belt length curve plotting of the water outlet of ion exchange resin and Adsorption of Heavy Metals;
S3, record the chromatic aberration of resin, carry out the location of IMAQ scope, according to image analysis, carry out aberration setting;
S4, image acquisition device gather the color image of ion exchange resin according to setting-up time interval, color image is passed to aberration identifier by optical cable;
S5, aberration identifier carry out column direction pixel component variance to the color image transmitting and extract, and the eigenwert of extracting transfers to controller;
S6, controller compare the bench-marking color characteristic of the eigenwert receiving and setting;
S7, judged result are exported with standard signal by transmitter, finally on upper computer, show whether resin needs regeneration.
Preferably, in step S1, in the time that resin is saturated, can there is noticeable change in its color, by image acquisition device to IMAQ and by the information transmission collecting to aberration identifier.
Preferably, in step S2, in the time of saturated rear its color generation noticeable change of resin, confirm column direction site by measuring water outlet heavy metal content, draw water outlet heavy metal concentration and column direction site curve, set benchmark site and aberration.
Preferably, in step S4, image acquisition device gathers after column direction pixel component variance is extracted and sends to aberration identifier by setting-up time.
Preferably, in step S5, aberration identifier is analyzed with setting benchmark aberration after column direction pixel component variance is extracted, and identification colors feature judges that whether resin is saturated.
Preferably, in step S6, controller, by column direction pixel component variance and the comparative analysis of setting benchmark aberration, in the time that component variance is greater than setting benchmark aberration, judges that resin is saturated, and sends instruction and carry out reproducer.
The present invention has following advantage and effect with respect to prior art:
1, the present invention can overcome the problem that the hysteresis that causes ion exchange resin to go out water monitoring due to artificial origin causes that water outlet exceeds standard, and identifies the colour-change of ion exchange resin carry out automatic saturation point judgement by computer, guarantees that stable effluent quality is up to standard.
2, the accurate and feasible method of the present invention can be understood the degree of saturation of ion exchange resin real-time and accurately, judges the saturation point of ion exchange resin, and the conversion of autocontrol valve and resin regeneration program guarantee stable water outlet qualified discharge
Accompanying drawing explanation
Fig. 1 is the structured flowchart of automatic control system of the present invention;
Fig. 2 is the feedback control schematic diagram of automatic control system of the present invention.
Fig. 3 is the schema of control method of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1 and Figure 2, a kind of ion exchange method is processed the process automatic control system of heavy metal wastewater thereby, image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter, rly. and upper computer; Described image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter and upper computer are linked in sequence, and described transmitter is also connected with rly., and image acquisition device is connected by optical cable with aberration identifier;
Described image acquisition device, gathers the color image of ion exchange resin for the timed interval according to setting, and the color image collecting by optical cable transmission to aberration identifier;
Described aberration identifier, carries out feature extraction for the color image that image acquisition device is transmitted, and the eigenwert of extracting transfers to controller;
Described controller, for the bench-marking color characteristic of the eigenwert receiving and setting is compared, judged result is exported with standard signal by transmitter;
Described upper computer, for showing whether resin needs regeneration.
In the present embodiment, described image acquisition device is high-definition camera, and described high-definition camera is realized the automatic shooting of image, and carries out real-time Transmission to photographing picture signal.
Described aberration identifier extracts the image pixel component variance on column direction automatically, in the time that this variance yields is greater than inner setting benchmark, sends graphic information to controller.
Described controller, by the image pixel component variance of aberration identifier and the comparison of inner setting benchmark, in the time that this value is greater than setting benchmark, can think that resin is saturated, sends signal to controller, carries out valve conversion and reproducer.
As shown in Figure 3, the present embodiment is processed the method for the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process, comprise the steps:
S1, color after saturated to ion exchange resin Adsorption of Heavy Metals are carried out IMAQ with image acquisition device;
S2, according to the color belt length curve plotting of the water outlet of ion exchange resin and Adsorption of Heavy Metals;
S3, record the chromatic aberration of resin, carry out the location of IMAQ scope, according to image analysis, carry out aberration setting;
S4, image acquisition device gather the color image of ion exchange resin according to setting-up time interval, color image is passed to aberration identifier by optical cable;
S5, aberration identifier carry out column direction pixel component variance to the color image transmitting and extract, and the eigenwert of extracting transfers to controller;
S6, controller compare the bench-marking color characteristic of the eigenwert receiving and setting;
S7, judged result are exported with standard signal by transmitter, finally on upper computer, show whether resin needs regeneration.
In step S1, in the time that resin is saturated, can there is noticeable change in its color, by image acquisition device to IMAQ and by the information transmission collecting to aberration identifier.
In step S2, in the time of saturated rear its color generation noticeable change of resin, confirm column direction site by measuring water outlet heavy metal content, draw water outlet heavy metal concentration and column direction site curve, set benchmark site and aberration.
In step S4, image acquisition device gathers after column direction pixel component variance is extracted and sends to aberration identifier by setting-up time.
In step S5, aberration identifier is analyzed with setting benchmark aberration after column direction pixel component variance is extracted, and identification colors feature judges that whether resin is saturated.
In step S6, controller, by column direction pixel component variance and the comparative analysis of setting benchmark aberration, in the time that component variance is greater than setting benchmark aberration, judges that resin is saturated, and sends instruction and carry out reproducer.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. the automatic control system of processing heavy metal wastewater thereby based on ion-exchange-resin process, is characterized in that, comprises image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter, rly. and upper computer; Described image acquisition device, aberration identifier, the first transmitter, controller, the second transmitter and upper computer are linked in sequence, and described transmitter is also connected with rly., and image acquisition device is connected by optical cable with aberration identifier;
Described image acquisition device, gathers the color image of ion exchange resin for the timed interval according to setting, and the color image collecting by optical cable transmission to aberration identifier;
Described aberration identifier, carries out feature extraction for the color image that image acquisition device is transmitted, and the eigenwert of extracting transfers to controller;
Described controller, for the bench-marking color characteristic of the eigenwert receiving and setting is compared, judged result is exported with standard signal by transmitter;
Described upper computer, for showing whether resin needs regeneration.
2. the automatic control system of processing heavy metal wastewater thereby based on ion-exchange-resin process according to claim 1, it is characterized in that, described image acquisition device is high-definition camera, and described high-definition camera is realized the automatic shooting of image, and carries out real-time Transmission to photographing picture signal.
3. the automatic control system of processing heavy metal wastewater thereby based on ion-exchange-resin process according to claim 1, it is characterized in that, described aberration identifier extracts the image pixel component variance on column direction automatically, in the time that this variance yields is greater than inner setting benchmark, sends graphic information to controller.
4. the automatic control system of processing heavy metal wastewater thereby based on ion-exchange-resin process according to claim 1, it is characterized in that, described controller is by the image pixel component variance of aberration identifier and the comparison of inner setting benchmark, in the time that this value is greater than setting benchmark, can think that resin is saturated, send signal to controller, carry out valve conversion and reproducer.
5. the method for processing according to claim 1 the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process, is characterized in that, comprises the steps:
S1, color after saturated to ion exchange resin Adsorption of Heavy Metals are carried out IMAQ with image acquisition device;
S2, according to the color belt length curve plotting of the water outlet of ion exchange resin and Adsorption of Heavy Metals;
S3, record the chromatic aberration of resin, carry out the location of IMAQ scope, according to image analysis, carry out aberration setting;
S4, image acquisition device gather the color image of ion exchange resin according to setting-up time interval, color image is passed to aberration identifier by optical cable;
S5, aberration identifier carry out column direction pixel component variance to the color image transmitting and extract, and the eigenwert of extracting transfers to controller;
S6, controller compare the bench-marking color characteristic of the eigenwert receiving and setting;
S7, judged result are exported with standard signal by transmitter, finally on upper computer, show whether resin needs regeneration.
6. the method for processing the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process according to claim 1, it is characterized in that, in step S1, in the time that resin is saturated, can there is noticeable change in its color, by image acquisition device to IMAQ and by the information transmission collecting to aberration identifier.
7. process according to claim 5 the method for the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process, it is characterized in that, in step S2, in the time of saturated rear its color generation noticeable change of resin, confirm column direction site by measuring water outlet heavy metal content, draw water outlet heavy metal concentration and column direction site curve, set benchmark site and aberration.
8. the method for processing the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process according to claim 5, it is characterized in that, in step S4, image acquisition device gathers after column direction pixel component variance is extracted and sends to aberration identifier by setting-up time.
9. the method for processing the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process according to claim 5, it is characterized in that, in step S5, after aberration identifier extracts column direction pixel component variance, be analyzed with setting benchmark aberration, identification colors feature judges that whether resin is saturated.
10. the method for processing the automatic control system of heavy metal wastewater thereby based on ion-exchange-resin process according to claim 5, it is characterized in that, in step S6, controller is by column direction pixel component variance and the comparative analysis of setting benchmark aberration, in the time that component variance is greater than setting benchmark aberration, judge that resin is saturated, and send instruction and carry out reproducer.
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| CN201410088981.XA CN103803678B (en) | 2014-03-11 | 2014-03-11 | Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method |
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| CN201410088981.XA CN103803678B (en) | 2014-03-11 | 2014-03-11 | Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285432A (en) * | 2017-08-25 | 2017-10-24 | 张家港光洲机械制造有限公司 | A kind of self-action water softening system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008253873A (en) * | 2007-03-30 | 2008-10-23 | Mitsui Eng & Shipbuild Co Ltd | Method for monitoring sludge and system for monitoring and controlling sludge |
| CN102879393A (en) * | 2012-09-20 | 2013-01-16 | 江苏大学 | PH value detection method and device based on image processing |
| CN103335955A (en) * | 2013-06-19 | 2013-10-02 | 华南农业大学 | Water quality on-line monitoring method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008253873A (en) * | 2007-03-30 | 2008-10-23 | Mitsui Eng & Shipbuild Co Ltd | Method for monitoring sludge and system for monitoring and controlling sludge |
| CN102879393A (en) * | 2012-09-20 | 2013-01-16 | 江苏大学 | PH value detection method and device based on image processing |
| CN103335955A (en) * | 2013-06-19 | 2013-10-02 | 华南农业大学 | Water quality on-line monitoring method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285432A (en) * | 2017-08-25 | 2017-10-24 | 张家港光洲机械制造有限公司 | A kind of self-action water softening system |
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