CN115594279A - Multi-parameter cooperative regulation and control system and method based on calculation type pH - Google Patents
Multi-parameter cooperative regulation and control system and method based on calculation type pH Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004364 calculation method Methods 0.000 title claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 230000008929 regeneration Effects 0.000 claims abstract description 71
- 238000011069 regeneration method Methods 0.000 claims abstract description 71
- 230000000694 effects Effects 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 25
- 238000004587 chromatography analysis Methods 0.000 claims description 25
- 229910052739 hydrogen Inorganic materials 0.000 claims description 25
- 239000001257 hydrogen Substances 0.000 claims description 25
- 238000013499 data model Methods 0.000 claims description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 238000011478 gradient descent method Methods 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims 1
- 150000001768 cations Chemical class 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000001139 pH measurement Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a multi-parameter cooperative regulation and control system and method based on computational pH, which comprises a water sample storage tank, a flow control device, a specific conductivity sensor, an electric regeneration module and a control unit, wherein the water sample storage tank is connected with the flow control device; the system and the method can realize the matching of the specific conductivity, the water flow and the running current of the electric regeneration module so as to improve the removal effect of the electric regeneration module on cations.
Description
Technical Field
The invention belongs to the technical field of power station water sample monitoring, and relates to a multi-parameter cooperative regulation and control system and method based on computational pH.
Background
The water vapor conductivity, the hydrogen conductivity and the pH value of the power station are important monitoring indexes, three water samples, a pH meter, a conductivity meter and a hydrogen conductivity meter are generally needed for monitoring the water vapor conductivity, the hydrogen conductivity and the pH value of the power station, and the instrument installation design not only occupies the installation space of the steam-water sampling frame in a large area, has high investment cost and high maintenance cost, but also causes the water vapor loss of the sampling system and is not beneficial to the energy saving and consumption reduction requirements of the power plant; when the flow of the steam-water sampling frame fluctuates, the chemical instrument at the same sampling point can cause the monitoring data distortion of the chemical instrument due to the flow change, the concentration of corrosive anions can not be accurately reflected, potential safety hazards are left for field chemical supervision, and the safety accidents of a thermodynamic system are caused. The calculation type pH measurement system can realize simultaneous measurement of water-vapor specific conductivity, hydrogen conductivity and pH value of the power station, the pH value of a water sample is calculated by measuring the conductivity and the hydrogen conductivity, and the measurement result is accurate and reliable; because the cation exchange column is additionally arranged in front of the hydrogen conductivity meter, resin needs to be frequently replaced or regenerated by hydrochloric acid, and a plurality of measurement interference problems are caused, so that the hydrogen conductivity cannot be continuously and accurately measured, the operation and maintenance workload is huge, the hydrogen conductivity is measured by applying an electric regeneration technology in a calculation type pH measurement system, the regenerated resin does not need to be replaced, and continuous, accurate and intelligent monitoring of the conductivity, the hydrogen conductivity and the pH can be realized by one water sample meter.
Generally, the larger the specific conductivity of the water sample is, the larger the processing current required by the electric regeneration module is, or the smaller the running flow of the water sample is, the better the processing effect can be obtained. However, in the calculation type pH measurement system, the current of the electrical regeneration module is fixed, and the removal effect of the electrical regeneration module on cations is poor due to the change of the water sample flow caused by the load change, the great change of the specific conductivity of water in the startup and shutdown stage, and the like, so that a measurement error is caused, and even an instrument is damaged in a serious case.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multi-parameter cooperative regulation and control system and method based on calculation type pH, and the system and method can realize the matching of specific conductivity, water flow and running current of an electric regeneration module so as to improve the removal effect of the electric regeneration module on cations.
In order to achieve the purpose, the multi-parameter cooperative regulation and control system based on the calculation type pH comprises a water sample storage tank, a flow control device, a specific conductivity sensor, an electric regeneration module and a control unit; the outlet of the water sample storage tank is connected with the inlet of the electric regeneration module through the flow control device and the specific conductivity sensor, and the control unit is connected with the flow control device, the specific conductivity sensor and the electric regeneration module.
The device also comprises a chromatographic analysis system, wherein an outlet of the electric regeneration module is communicated with an inlet of the chromatographic analysis system, and the chromatographic analysis system is connected with the control unit.
And a hydrogen conductivity sensor is arranged at the outlet of the electric regeneration module and is connected with the control unit.
The control unit can control the flow rate of the flow rate control device to be (0-500) mL/min.
The control unit can control the operation current of the electric regeneration module to be (0-500) mA.
The multi-parameter cooperative regulation and control method based on the calculation type pH value comprises the following steps:
1) Constructing a multi-parameter cooperative regulation model;
2) The water sample sequentially enters the electric regeneration module through the flow control device and the specific conductivity sensor to be regenerated, wherein the control unit determines the optimal water flow V by utilizing the multi-parameter cooperative regulation and control model according to the specific conductivity of the water sample measured by the specific conductivity sensor X is excellent And an optimum operating current I X is excellent Then controlling the electric regeneration module and the flow control device to make the running current of the electric regeneration module be I X is excellent The flow rate of the flow rate control device is V X is excellent So as to ensure the removal effect of cations in the water sample in the electric regeneration module.
And a hydrogen conductivity sensor is arranged at the outlet of the electric regeneration module and is connected with the control unit.
The outlet of the electric regeneration module is communicated with the inlet of a chromatographic analysis system, and the chromatographic analysis system is connected with the control unit.
The specific operation of the step 1) is as follows:
11 Adding ammonia into the water sample in the water sample storage tank to adjust the specific conductivity of the water discharged from the water sample storage tank;
12 Adopting a gradient descent method, controlling the flow of the flow control device and the running current of the electric regeneration module 4 by a control unit to ensure that the content of ammonium radicals measured by a chromatographic analysis system is less than or equal to 0.5 mu g/L, and taking the flow of the flow control device and the running current of the electric regeneration module which are correspondingly controlled when the content of ammonium radicals measured by the chromatographic analysis system is less than or equal to 0.5 mu g/L as the optimal flow and the optimal current for running the water sample in the range of (0-5) mu s/cm under the current specific conductivity;
13 According to the optimal flow and the optimal current of the water sample running in the range of (0-5) mu s/cm under different specific conductivities, a multi-parameter cooperative regulation model is constructed.
The multi-parameter cooperative regulation model comprises the following steps:
V x is excellent ＝-b 1 D 6 +b 2 D 5 -b 3 D 4 +b 4 D 3 -b 5 D 2 +b 6 D+b 0 (1)
I x is excellent ＝a 1 D 6 -a 2 D 5 +a 3 D 4 -a 4 D 3 +a 5 D 2 -a 6 D+a 0 (2)
Wherein, formula (1) represents a specific conductivity-water sample flow data model, formula (2) represents a specific conductivity-electricity regeneration module current data model, b 0 、b 1 、b 2 、b 3 、b 4 、b 5 And b 6 The regression coefficient of the specific conductivity-water sample flow data model is obtained; a is 0 、a 1 、a 2 、a 3 、a 4 、a 5 And a 6 Is the regression coefficient of the specific conductivity-electric regeneration module current data model.
The invention has the following beneficial effects:
the multi-parameter cooperative regulation and control system and method based on the calculation type pH determine the optimal water flow V according to the specific conductivity of the water sample measured by the specific conductivity sensor based on the multi-parameter cooperative regulation and control model during specific operation X is excellent And an optimum operating current I X is excellent And the flow control device and the electric regeneration module are controlled by the flow control device and the electric regeneration module to ensure the removal effect of cations in a water sample in the electric regeneration module, realize the cooperative regulation and control among the specific conductivity of the water sample, the flow of the water sample and the working current of the electric regeneration module, avoid the distortion of measurement data or the damage of an instrument when the flow of a steam-water sampling frame fluctuates and the load changes to cause the flow change of the water sample and the specific conductivity of water in a startup and shutdown stage changes greatly, realize the continuous, accurate and intelligent monitoring of the conductivity, the hydrogen conductivity and the pH by one instrument of one water sample, facilitate the operators of a power plant to accurately judge the water quality conditions by multiple indexes and timely process the working condition adjustment of the index water, and ensure the safe and economic operation of a thermal device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a graph of different specific conductance versus current and flow rate.
Wherein, 1 is a water sample storage tank, 2 is a flow control device, 3 is a specific conductivity sensor, 4 is an electric regeneration module, 5 is a hydrogen conductivity sensor, 6 is a chromatographic analysis system, and 7 is a control unit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of the various regions, layers and their relative sizes, positional relationships are shown in the drawings as examples only, and in practice deviations due to manufacturing tolerances or technical limitations are possible, and a person skilled in the art may additionally design regions/layers with different shapes, sizes, relative positions, according to the actual needs.
Referring to fig. 1 and 2, the multi-parameter cooperative regulation and control system based on the calculation type pH of the present invention includes a water sample storage tank 1, a flow control device 2, a specific conductivity sensor 3, an electrical regeneration module 4, a hydrogen conductivity sensor 5, a chromatography system 6 and a control unit 7; an outlet of the water sample storage tank 1 is connected with an inlet of an electric regeneration module 4 through a flow control device 2 and a specific conductivity sensor 3, and an outlet of the electric regeneration module 4 is communicated with an inlet of a chromatographic analysis system 6;
the method comprises the following steps that (1) pure water added with ammonia in a water sample storage tank 1 sequentially enters a specific conductivity sensor 3 through a flow control device 2, enters an electric regeneration module 4, passes through a hydrogen conductivity sensor 5, enters a chromatographic analysis system 6 and is discharged; the control unit 7 is connected with the flow control device 2, the specific conductivity sensor 3, the chromatographic analysis system 6, the electric regeneration module 4 and the hydrogen conductivity sensor 5, and the flow control device 2 is a peristaltic pump or a flow regulating valve.
The control unit 7 is a single chip microcomputer, the control unit 7 calculates the pH value of the water sample according to the measurement signals of the specific conductivity sensor 3 and the hydrogen conductivity sensor 5, and controls the flow of the flow control device 2 and the running current of the electric regeneration module 4 at the same time; wherein the control unit 7 can control the flow rate of the flow rate control device 2 to (0-500) mL/min and the operation current of the electric regeneration module 4 to (0-500) mA; the specific conductivity of the water sample is controlled to be (0-50) mu s/cm in the water sample storage tank 1 by adding ammonia.
The multi-parameter cooperative regulation and control method based on the calculation type pH value comprises the following steps:
1) Constructing a multi-parameter cooperative regulation and control model;
2) The control unit 7 determines the optimal water flow V by utilizing a multi-parameter cooperative regulation and control model according to the specific conductivity of the water sample measured by the specific conductivity sensor 3 X And an optimum operating current I X Then controlling the electric regeneration module 4 and the flow control device 2 to make the running current of the electric regeneration module 4 be I X The flow rate of the flow rate control device 2 is V X So as to ensure the removal effect of the cations in the water sample.
The specific process for constructing the multi-parameter cooperative regulation and control model comprises the following steps:
11 Adding ammonia into the water sample in the water sample storage tank 1 to adjust the specific conductivity of the water discharged from the water sample storage tank 1;
12 Adopting a gradient descent method, controlling the flow of the flow control device 2 and the running current of the electric regeneration module 4 by the control unit 7 to ensure that the content of ammonium radicals measured by the chromatographic analysis system 6 is less than or equal to 0.5 mu g/L, and correspondingly controlling the flow of the flow control device 2 and the running current of the electric regeneration module 4 when the content of ammonium radicals measured by the chromatographic analysis system 6 is less than or equal to 0.5 mu g/L as the optimal flow and the optimal current for running the water sample in the range of (0-5) mu s/cm under the current specific conductivity;
13 According to the optimal flow and the optimal current of the water sample running in the range of (0-5) mu s/cm under different specific conductivities, a multi-parameter cooperative regulation model is constructed.
For example, the specific process of determining the optimal flow and the optimal current of the water sample running in the range of (0-5) mus/cm under the specific conductivity of 5 mus/cm is as follows:
121 Ammonia is added into the water in the water sample storage tank 1 to ensure that the specific conductivity of the water discharged from the water sample storage tank 1 is 5 mu s/cm, and the flow V is determined according to the water quality, the operation condition and the experience 0 you And current I 0 you ；
122 Control means 7 controls the flow control device 2 and the electrical regeneration module 4 such that the flow of the flow control device 2 is V 0 you So that the operating current of the electrical regeneration module 4 is I 0 you The water sample in the water sample storage tank 1 sequentially passes through the flow control device 2, the specific conductivity sensor 3, the electric regeneration module 4 and the hydrogen conductivity sensor 5 and then enters the chromatographic analysis system 6 to measure the content of ammonium radicals;
123 When the measured content of ammonium radicals is less than 0.5 mu g/L, the specific conductivity of the current water sample is in the optimum flow V of operation within the range of (0-5) mu s/cm 1 you ＝V 0 you Optimum current I 1 you (good quality) ＝I 0 you When the measured ammonium content is more than 0.5 mu g/L, turning to the step 4);
124 Maintaining the specific conductivity of the water sample at 5 mus/cm, controlling the flow control device 2 and the electrical regeneration module 4 by the control unit 7 so that the flow of the flow control device 2 is V 0 you 5ml/min, while making the operating flow of the electrical regeneration module 4I 0 you +10mA, under the condition, the water sample sequentially enters the electric regeneration module 4 and the hydrogen conductivity sensor 5 through the flow control device 2 and the specific conductivity sensor 3 and then enters the chromatographic analysis system 6 to measure the ammonium content;
125 Judging whether the content of the ammonium radicals measured by the chromatographic analysis system 6 is less than 0.5 mu g/L or not, and when the content of the ammonium radicals measured by the chromatographic analysis system 6 is less than 0.5 mu g/L, determining the current optimal flow V of the water sample with the specific conductivity of (0-5) mu s/cm 1 you ＝V 0 you 5ml/min, optimum Current I 1 you ＝I 0 you +10mA, otherwise, go to step 4).
It should be noted that the flow rate of 50ml/min or less is the lowest flow rate for measuring the hydrogen conductivityWhen V is x is excellent After =50ml/min, the water sample flow is not reduced, and the test is carried out by adjusting and increasing the current only, when the current I is x is excellent If =500mA, the current is not increased any more, the test is finished, and the test result is shown in table 1;
TABLE 1
According to the test, the relationship among the conductivity, the water flow rate and the regeneration current is shown in table 2:
TABLE 2
The multi-parameter cooperative regulation model comprises the following steps:
V x is excellent ＝-b 1 D 6 +b 2 D 5 -b 3 D 4 +b 4 D 3 -b 5 D 2 +b 6 D+b 0 (1)
I x is excellent ＝a 1 D 6 -a 2 D 5 +a 3 D 4 -a 4 D 3 +a 5 D 2 -a 6 D+a 0 (2)
Wherein, formula (1) represents a specific conductivity-water sample flow data model, formula (2) represents a specific conductivity-electricity regeneration module current data model, b 0 、b 1 、b 2 、b 3 、b 4 、b 5 And b 6 The regression coefficient of the specific conductivity-water sample flow data model is obtained; a is 0 、a 1 、a 2 、a 3 、a 4 、a 5 And a 6 All regression coefficients are greater than 0 for the specific conductivity-electrical regeneration module current data model.
In actual operation, the multi-parameter cooperative regulation and control model is applied to a calculation type pH measurement system, the specific conductivity measurement value is 15 mu s/cm during the starting period of the unit, and the control unit 7 receives the specific conductivity measurement valueAfter the specific conductivity signal is detected by the specific conductivity sensor 3, the corresponding water flow V under the specific conductivity is calculated according to the specific conductivity-water sample flow data model shown in the formula (1) and the specific conductivity-electric regeneration module current data model shown in the formula (2) X And the operating current I of the electrical regeneration module 4 X And the electric regeneration module 4 and the flow control device 2 are controlled by the control circuit so that the running current of the electric regeneration module 4 is I X The flow rate of the flow rate control device 2 is V X The removal effect of cations is ensured, namely the ammonium radical is less than 0.5 mug/L, so that the faults of the calculation type pH measurement system caused by the flow fluctuation of the steam-water sampling frame, the flow change of a water sample caused by the load change and the large change of the specific conductivity of water in the startup and shutdown stage are avoided, and the indexes of the conductivity, the hydrogen conductivity, the pH value and the like of the calculation type pH value under various water working conditions can be accurately measured.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A multi-parameter cooperative regulation and control system based on calculation type pH is characterized by comprising a water sample storage tank (1), a flow control device (2), a specific conductivity sensor (3), an electric regeneration module (4) and a control unit (7); an outlet of the water sample storage tank (1) is connected with an inlet of the electric regeneration module (4) through the flow control device (2) and the specific conductivity sensor (3), and the control unit (7) is connected with the flow control device (2), the specific conductivity sensor (3) and the electric regeneration module (4).
2. The system for the multi-parameter cooperative regulation and control based on the calculation type pH according to claim 1, further comprising a chromatographic analysis system (6), wherein the outlet of the electric regeneration module (4) is communicated with the inlet of the chromatographic analysis system (6), and the chromatographic analysis system (6) is connected with the control unit (7).
3. The system for the multi-parameter coordinated regulation and control based on the calculation type pH according to claim 1 is characterized in that a hydrogen conductivity sensor (5) is arranged at the outlet of the electric regeneration module (4), and the hydrogen conductivity sensor (5) is connected with the control unit (7).
4. The system for the multi-parameter, cooperative regulation based on calculated pH according to claim 1, characterized in that the control unit (7) is capable of controlling the flow of the flow control device (2) at (0-500) mL/min.
5. The system for the multi-parameter coordinated regulation based on the calculation type pH according to claim 1, characterized in that the control unit (7) is capable of controlling the operation current of the electric regeneration module (4) at (0-500) mA.
6. A multi-parameter cooperative regulation and control method based on a calculation type pH is characterized in that the multi-parameter cooperative regulation and control system based on the calculation type pH according to claim 1 comprises the following steps:
1) Constructing a multi-parameter cooperative regulation model;
2) The water sample sequentially passes through the flow control device (2) and the specific conductivity sensor (3) to enter the electric regeneration module (4) for regeneration, wherein the control unit (7) determines the optimal water flow V by utilizing the multi-parameter cooperative regulation and control model according to the specific conductivity of the water sample measured by the specific conductivity sensor (3) X is excellent And an optimum operating current I X is excellent Then, the electric regeneration module (4) and the flow control device (2) are controlled to enable the running current of the electric regeneration module (4) to be I X is excellent The flow rate of the flow rate control device (2) is V X is excellent So as to ensure the removal effect of the positive ions in the water sample in the electric regeneration module (4).
7. The multi-parameter coordinated control method based on the calculation type pH according to the claim 6, characterized in that the outlet of the electric regeneration module (4) is provided with a hydrogen conductivity sensor (5), and the hydrogen conductivity sensor (5) is connected with the control unit (7).
8. The method for the multi-parameter cooperative regulation and control based on computational pH according to claim 6, characterized in that the outlet of the electrical regeneration module (4) is communicated with the inlet of the chromatography system (6), and the chromatography system (6) is connected with the control unit (7).
9. The method for multi-parameter cooperative regulation and control based on computational pH according to claim 8, wherein the specific operations of step 1) are as follows:
11 Adding ammonia into the water sample in the water sample storage tank (1) to adjust the specific conductivity of the water discharged from the water sample storage tank (1);
12 Adopting a gradient descent method, controlling the flow of the flow control device (2) and the running current of the electric regeneration module (4) through the control unit (7) to ensure that the content of ammonium radicals measured by the chromatographic analysis system (6) is less than or equal to 0.5 mu g/L, and taking the corresponding flow of the flow control device (2) and the running current of the electric regeneration module (4) when the content of ammonium radicals measured by the chromatographic analysis system (6) is less than or equal to 0.5 mu g/L as the optimal flow and the optimal current of the running water sample in the range of (0-5) mu s/cm under the current specific conductivity;
13 According to the optimal flow and the optimal current of the water sample running in the range of (0-5) mu s/cm under different specific conductivities, a multi-parameter cooperative regulation model is constructed.
10. The method of claim 6, wherein the multi-parameter cooperative control model is:
V x is excellent ＝-b 1 D 6 +b 2 D 5 -b 3 D 4 +b 4 D 3 -b 5 D 2 +b 6 D+b 0 (1)
I x is excellent ＝a 1 D 6 -a 2 D 5 +a 3 D 4 -a 4 D 3 +a 5 D 2 -a 6 D+a 0 (2)
Wherein, formula (1) represents a specific conductivity-water sample flow data model, formula (2) represents a specific conductivity-electricity regeneration module current data model, b 0 、b 1 、b 2 、b 3 、b 4 、b 5 And b 6 The regression coefficient of the specific conductivity-water sample flow data model is obtained; a is a 0 、a 1 、a 2 、a 3 、a 4 、a 5 And a 6 Is the regression coefficient of the specific conductivity-electric regeneration module current data model.
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