CN112485315A - High-hardness wastewater scaling ion online monitoring system and method - Google Patents
High-hardness wastewater scaling ion online monitoring system and method Download PDFInfo
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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Abstract
The invention discloses a high hardness waste water scaling ion on-line monitoring system and method, wherein the outlet of a sample injection pipeline is communicated with the inlet of a sampling metering pump, the inlet of a flushing water metering pump, the inlet of an alkaline medicament dosing metering pump, the inlet of a masking agent dosing metering pump, the inlet of a barium salt standard solution dosing metering pump and the inlet of a titrant dosing metering pump are respectively communicated with the demineralized water outlet of a medicament box, the alkaline medicament outlet, the masking agent outlet, the barium salt standard solution outlet and the titrant outlet, the outlet of the sampling metering pump, the outlet of the flushing water metering pump, the outlet of the alkaline medicament dosing metering pump, the outlet of the masking agent dosing metering pump, the outlet of the barium salt standard solution dosing metering pump and the outlet of the titrant dosing metering pump are communicated with the inlet of a titration cell, the outlet of the titration cell is sequentially communicated with a waste liquid, a temperature sensor, a pH electrode and an ion electrode are inserted into the titration cell, and the system and the method can realize the on-line monitoring of the scaling ions of the high-hardness wastewater.
Description
Technical Field
The invention belongs to the field of wastewater treatment, and relates to an online monitoring system and method for high-hardness wastewater scaling ions.
Background
The water consumption of the thermal power plant is about 40 percent of the total industrial water consumption, and the water problem becomes a restriction factor for the construction and development of the power industry, and is particularly prominent in northern areas. The circulating water system and the desulfurization system of the thermal power plant are main water using and discharging units, the quality of the produced circulating water sewage and desulfurization wastewater is poor, the content of scale forming ions in the water is high, direct recycling easily causes scaling of a subsequent recycling treatment system, and normal operation of the system is influenced. At present, in the circulating water sewage deep treatment and desulfurization wastewater treatment transformation projects related to the comprehensive treatment, reuse and transformation of the wastewater of the thermal power plant, softening treatment units are included, the quality of the wastewater is optimized through softening treatment, the stable operation of a wastewater treatment and reuse system (membrane) is ensured, and the effect of wastewater emission reduction and transformation of the thermal power plant is ensured.
However, in practical application, the operation effect of the softening treatment unit is mainly analyzed and detected by timing sampling of a power plant, the inspection period is long, the adjustment of the dosing dosage parameter of the medicament is delayed, the quality of effluent water cannot be controlled in time, and particularly when the quality and the quantity of wastewater change, the quality of effluent water is difficult to ensure, so that the operation stability of a softening system is poor, and the scaling risk of a subsequent membrane system is increased; meanwhile, the existing potentiometric titrator cannot realize on-line automatic detection, has a complex working process and low automation degree, and is difficult to meet the requirement of rapid monitoring and adjustment of the water quality of enterprises in thermal power plants on site. At present, in order to ensure the wastewater softening treatment effect, the dosage of a softening agent is increased, so that the operation cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for on-line monitoring of high-hardness wastewater scaling ions, and the system and the method can realize on-line monitoring of the high-hardness wastewater scaling ions.
In order to achieve the aim, the high-hardness wastewater scaling ion online monitoring system comprises a controller, a sample introduction pipeline, a sampling metering pump, a flushing water metering pump, an alkaline medicament dosing metering pump, a masking agent dosing metering pump, a barium salt standard solution dosing metering pump, a titrant dosing metering pump, a medicament box, a titration cell, a waste liquid discharge valve, a waste liquid discharge pipeline, a stirrer and a display;
a sample injection control valve and a Y-shaped filter are arranged on the sample injection pipeline, the outlet of the sample injection pipeline is communicated with the inlet of the sampling metering pump, the inlet of the flushing water metering pump, the inlet of the alkaline medicament dosing metering pump, the inlet of the masking agent dosing metering pump, the inlet of the barium salt standard solution dosing metering pump and the inlet of the titrant dosing metering pump are respectively communicated with the demineralized water outlet, the alkaline medicament outlet, the masking agent outlet, the barium salt standard solution outlet and the titrant outlet of the medicament box, the outlet of the sampling metering pump, the outlet of the flushing water metering pump, the outlet of the alkaline medicament dosing metering pump, the outlet of the masking agent dosing metering pump, the outlet of the barium salt standard solution dosing metering pump and the outlet of the titrant dosing metering pump are communicated with the inlet of the titration cell, the outlet of the titration cell is sequentially communicated with a waste liquid discharge, A pH electrode and an ion electrode;
a stirring impeller is arranged in the titration tank, and the stirrer is connected with the stirring impeller in the titration tank;
the titrant dosing metering pump, the temperature sensor, the pH electrode, the ion electrode and the display are connected with the input end of the controller, and the output end of the controller is connected with the sample injection control valve, the sampling metering pump, the flushing water metering pump, the alkaline medicament dosing metering pump, the masking agent dosing metering pump, the barium salt standard solution dosing metering pump, the titrant dosing metering pump, the stirrer, the waste liquid discharge valve and the display.
And a Y-shaped filter is arranged on the sample introduction pipeline.
The demineralized water outlet of the chemical box is communicated with a flushing water metering pump through a flushing pipeline;
an alkaline agent outlet of the agent box is communicated with an alkaline agent dosing metering pump through a first dosing pipe;
the masking agent outlet of the chemical box is communicated with a masking agent dosing metering pump through a second dosing pipe;
the barium salt standard solution outlet of the chemical box is communicated with a barium salt standard solution dosing metering pump through a third dosing pipe;
the outlet of the rinsing water metering pump is communicated with the inlet of the titration cell through a rinsing water pipe.
The titrant outlet of the chemical box is communicated with the titrant dosing metering pump through a titrant pipeline.
The device also comprises a perforated plate used for limiting the flushing water pipe, the first dosing pipe, the second dosing pipe, the third dosing pipe, the titrant pipeline, the temperature sensor, the pH electrode and the ion electrode.
The on-line monitoring method for the scale forming ions of the high-hardness wastewater comprises the following steps:
1) the method comprises the following steps that demineralized water enters a titration cell through a flushing pipeline and a flushing water metering pump, a stirrer, an alkaline agent dosing metering pump, a masking agent dosing metering pump, a barium salt standard solution dosing metering pump and a titrant dosing metering pump are started to discharge bubbles in a first dosing pipe, a second dosing pipe, a third dosing pipe and the titrant pipeline, a temperature sensor, a pH electrode, an ion electrode and the titration cell are flushed, then the alkaline agent dosing metering pump, the masking agent dosing metering pump, the barium salt standard solution dosing metering pump, the titrant dosing metering pump, the stirrer and the flushing water metering pump are sequentially closed, a waste liquid discharge valve is started, waste liquid in the titration cell is emptied, the waste liquid discharge valve is closed, and flushing is completed;
2) a water sample to be tested enters a titration cell through a sampling metering pump, the titration cell is rinsed, then a waste liquid discharge valve is opened, the titration cell is emptied, then the waste liquid discharge valve is closed, and then the water sample to be tested is sent into the titration cell through a sampling metering pump to finish sampling;
3) opening an alkaline medicament dosing metering pump, a masking agent dosing metering pump or a barium salt standard solution dosing metering pump according to the test requirement, and adding an alkaline medicament, a masking agent or a barium salt standard solution into a titration cell;
4) starting a stirrer, starting metering titration by using a titrant dosing metering pump, transmitting titration information to a controller in real time by using the titrant dosing metering pump, detecting the temperature, the pH value and the potential information of a water sample to be detected in a titration tank in real time by using a temperature sensor, a pH electrode and an ion electrode, judging a titration end point according to the potential information detected by the ion electrode, the pH value detected by the pH electrode, the temperature information detected by the temperature sensor and the dropping volume of a titrant standard solution, closing the titrant dosing metering pump and the stirrer when the titration end point is reached, starting a waste liquid discharge valve, and discharging waste liquid in the titration tank through a waste liquid discharge pipeline;
and the controller calculates the volume of the titrant according to the drop counting result of the titrant dosing metering pump, and then calculates the concentration of the component to be detected in the water sample to be detected according to the volume of the titrant and the potential value at the end point of the titration obtained by the feedback of the ion electrode.
When the calcium ion concentration in the water sample to be detected is determined, an alkaline agent is dripped;
when the total hardness of the water sample is measured, a masking agent is dripped;
when measuring sulfate ions in a water sample to be measured, quantitative and excessive barium salt standard solution is dripped.
The invention has the following beneficial effects:
the invention relates to a high-hardness wastewater scaling ion online monitoring system and a method, during the specific operation, a titration cell is firstly washed, then a water sample to be tested is added after evacuation, then an alkaline medicament, a masking agent or a barium salt standard solution is added into the titration cell according to the test requirement, then a titrant is dripped according to the titration method, simultaneously the temperature, the pH value and the potential information of the water sample to be tested in the titration cell are detected in real time through a temperature sensor, a pH electrode and an ion electrode, and the titration end point is judged according to the temperature, the pH value and the potential information, a controller can calculate the concentration of components to be tested in the water sample to be tested according to the volume of the titrant and the potential value at the titration end point obtained by the ion electrode feedback, thereby realizing online continuous sampling and online titration analysis of scaling ions such as calcium, magnesium, sulfate radical and the like of the wastewater sample, and the dosing system of a softening treatment, realize softening accurate of medicament and throw, and then reduce and add medicine running cost, effectively improve and soften processing system operating stability, guarantee to soften out water quality of water, need not artificial intervention, effectively improve the monitoring precision, system structure is simple, convenient operation, and the practicality is stronger.
Drawings
FIG. 1 is a flowchart of the titration program of the present invention.
Fig. 2 is a working principle diagram of the present invention.
Wherein, 1 is a sample introduction pipeline, 2 is a sample introduction control valve, 3 is a Y-shaped filter, 4 is a sampling metering pump, 5 is a flushing water metering pump, 6 is an alkaline medicament dosing metering pump, 7 is a masking agent dosing metering pump, 8 is a barium salt standard solution dosing metering pump, 9 is a titrant dosing metering pump, 10 is a flushing pipeline, 11 is a dosing pipeline, 12 is a titrant pipeline, 13 is a porous plate, 14 is a titration cell, 15 is a stirring impeller, 16 is a stirrer, 17 is a waste liquid discharge valve, 18 is a waste liquid discharge pipeline, 19 is a controller, 20 is a display, 21 is an ion electrode, and 22 is a medicament box.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 2, the high hardness wastewater scaling ion online monitoring system of the present invention comprises a controller 19, a sample introduction pipeline 1, a sampling metering pump 4, a rinsing water metering pump 5, an alkaline chemical dosing metering pump 6, a masking agent dosing metering pump 7, a barium salt standard solution dosing metering pump 8, a titrant dosing metering pump 9, a chemical tank 22, a titration cell 14, a waste liquid discharge valve 17, a waste liquid discharge pipeline 18, a stirrer 16 and a display 20; a sample injection control valve 2 and a Y-shaped filter 3 are arranged on a sample injection pipeline 1, the outlet of the sample injection pipeline 1 is communicated with the inlet of a sampling metering pump 4, the inlet of a flushing water metering pump 5, the inlet of an alkaline medicament dosing metering pump 6, the inlet of a masking agent dosing metering pump 7, the inlet of a barium salt standard solution dosing metering pump 8 and the inlet of a titrant dosing metering pump 9 are respectively communicated with a demineralized water outlet, an alkaline medicament outlet, a masking agent outlet, a barium salt standard solution outlet and a titrant outlet of a medicament box 22, the outlet of the sampling metering pump 4, the outlet of the flushing water metering pump 5, the outlet of the alkaline medicament dosing metering pump 6, the outlet of the masking agent dosing metering pump 7, the outlet of the barium salt standard solution dosing pump 8 and the outlet of the titrant dosing pump 9 are communicated with the inlet of a titration cell 14, the outlet of the titration cell 14 is sequentially communicated with a, a temperature sensor, a pH electrode and an ion electrode 21 are inserted into the titration cell 14; a stirring impeller 15 is arranged in the titration cell 14, and a stirrer 16 is matched with the stirring impeller 15 in the titration cell 14; the titrant dosing metering pump 9, the temperature sensor, the pH electrode, the ion electrode 21 and the display 20 are connected with the input end of the controller 19, and the output end of the controller 19 is connected with the sampling control valve 2, the sampling metering pump 4, the flushing water metering pump 5, the alkaline medicament dosing metering pump 6, the masking agent dosing metering pump 7, the barium salt standard solution dosing metering pump 8, the titrant dosing metering pump 9, the stirrer 16, the waste liquid discharge valve 17 and the display 20.
The sample introduction pipeline 1 is provided with a Y-shaped filter 3.
The demineralized water outlet of the chemical tank 22 is communicated with a flushing water metering pump 5 through a flushing pipeline 10;
an alkaline medicament outlet of the medicament box 22 is communicated with an alkaline medicament dosing metering pump 6 through a first medicament dosing pipe;
the masking agent outlet of the chemical box 22 is communicated with a masking agent dosing metering pump 7 through a second dosing pipe;
the barium salt standard solution outlet of the chemical box 22 is communicated with the barium salt standard solution dosing metering pump 8 through a third dosing pipe;
the outlet of the rinsing water metering pump 5 is communicated with the inlet of the titration cell 14 through a rinsing water pipe.
The titrant outlet of the chemical box 22 is communicated with the titrant dosing metering pump 9 through a titrant pipeline 12.
The device also comprises a porous plate 13 for limiting the flushing water pipe, the first dosing pipe, the second dosing pipe, the third dosing pipe, the titrant pipeline 12, the temperature sensor, the pH electrode and the ion electrode 21.
Referring to fig. 1, the method for on-line monitoring the scale forming ions in high-hardness wastewater comprises the following steps:
1) the method comprises the following steps that demineralized water enters a titration cell 14 through a flushing pipeline 10 and a flushing water metering pump 5, a stirrer 16, an alkaline medicament dosing metering pump 6, a masking agent dosing metering pump 7, a barium salt standard solution dosing metering pump 8 and a titrant dosing metering pump 9 are started to discharge bubbles in a first dosing pipe, a second dosing pipe, a third dosing pipe and a titrant pipeline 12, a temperature sensor, a pH electrode, an ion electrode 21 and the titration cell 14 are flushed, then the alkaline medicament dosing metering pump 6, the masking agent dosing metering pump 7, the barium salt standard solution dosing metering pump 8, the titrant dosing metering pump 9, the stirrer 16 and the flushing water metering pump 5 are sequentially closed, a waste liquid discharge valve 17 is started to empty waste liquid in the titration cell 14, and then the waste liquid discharge valve 17 is closed to finish flushing;
2) a water sample to be tested enters a titration cell 14 through a sampling metering pump 4, the titration cell 14 is rinsed, then a waste liquid discharge valve 17 is opened, the titration cell 14 is emptied, then the waste liquid discharge valve 17 is closed, and then the water sample to be tested is sent into the titration cell 14 through the sampling metering pump 4 to finish sampling;
3) opening an alkaline medicament dosing metering pump 6, a masking agent dosing metering pump 7 or a barium salt standard solution dosing metering pump 8 according to the test requirement, and adding an alkaline medicament, a masking agent or a barium salt standard solution into a titration cell 14;
4) starting the stirrer 16, starting metering titration by using the titrant dosing metering pump 9, transmitting titration information to the controller 19 by using the titrant dosing metering pump 9 in real time, detecting the temperature, the pH value and the potential information of a water sample to be detected in the titration cell 14 in real time through the temperature sensor, the pH electrode and the ion electrode 21, judging a titration end point according to the potential information detected by the ion electrode 21, the pH value detected by the pH electrode, the temperature information detected by the temperature sensor and the dropping volume of a titrant standard solution, when the titration end point is reached, closing the titrant dosing metering pump 9 and the stirrer 16, starting the waste liquid discharge valve 17, and discharging waste liquid in the titration cell 14 through the waste liquid discharge pipeline 18;
the controller 19 calculates the volume of the titrant according to the drop counting result of the titrant dosing metering pump 9, then calculates the concentration of the component to be measured in the water sample to be measured according to the volume of the titrant and the potential value at the end point of the titration obtained by the feedback of the ion electrode 21, and simultaneously stores and displays the concentration of the component to be measured in the water sample to be measured.
In actual operation, the calcium ion concentration, the total hardness, and the sulfate ion concentration were measured in this order.
Wherein, when the calcium ion concentration in the water sample to be detected is determined, alkaline medicament is dripped; when the total hardness of the water sample is measured, a masking agent is dripped; when measuring sulfate ions in a water sample to be measured, quantitative and excessive barium salt standard solution is dripped.
During actual operation, the control system of the online monitoring device determines the adjustment of the dosing amount of the softening agent according to the water quality analysis result and the comparison threshold, and transmits a feedback instruction to the dosing control system of the softening processing unit, so that the online monitoring and adjusting function is realized.
Preferably, during the titration, when the feedback potential of the ion-selective electrode of the titrated sample changes rapidly (about to generate potential jump), the dosing speed is slowed down, and the cycle is continued until the titration endpoint is reached.
In addition, the controller 19 records data of the titration process in real time, including the volume of the added titrant standard solution and the constantly changing potential value of the ion electrode 21, transmits the potential detected by the ion electrode 21 in the titration process to the controller 19, records the potential when the titration end point is reached, simultaneously draws a curve graph of the added volume of the titrant and the potential change data in the titration process, and then displays the curve graph through the display 20.
In addition, a detection change threshold value is set for the potential component change range in the titration method, the titration speed is reduced when the end point is approached, the detection precision is increased, a curve graph is constructed, wherein the X axis of the curve is the adding volume of the titrant standard solution, the Y axis of the curve is the changed potential value or the first derivative or the second derivative of the potential value to the titrant volume, the point with rapid potential value change can form a peak or a valley on the derivative curve, the system can easily judge the end point position, and the corresponding volume point with the most rapid potential component change can be clearly determined through the curve graph.
Claims (8)
1. The high-hardness wastewater scaling ion online monitoring system is characterized by comprising a controller (19), a sample introduction pipeline (1), a sampling metering pump (4), a washing water metering pump (5), an alkaline medicament dosing metering pump (6), a masking agent dosing metering pump (7), a barium salt standard solution dosing metering pump (8), a titrant dosing metering pump (9), a medicament box (22), a titration cell (14), a waste liquid discharge valve (17), a waste liquid discharge pipeline (18), a stirrer (16) and a display (20);
a sample injection control valve (2) and a Y-shaped filter (3) are arranged on the sample injection pipeline (1), the outlet of the sample injection pipeline (1) is communicated with the inlet of a sampling metering pump (4), the inlet of a rinsing water metering pump (5), the inlet of an alkaline medicament dosing metering pump (6), the inlet of a masking agent dosing metering pump (7), the inlet of a barium salt standard solution dosing metering pump (8) and the inlet of a titrant dosing metering pump (9) are respectively communicated with the demineralized water outlet of a medicament box (22), the alkaline medicament outlet, the masking agent outlet, the barium salt standard solution outlet and the titrant outlet, the outlet of the sampling metering pump (4), the outlet of the rinsing water metering pump (5), the outlet of the alkaline medicament dosing metering pump (6), the outlet of the masking agent dosing metering pump (7), the outlet of the barium salt standard solution dosing pump (8) and the outlet of the titrant dosing metering pump (9) are communicated with the inlet of a titration cell (14), an outlet of the titration cell (14) is sequentially communicated with a waste liquid discharge pipeline (18) through a waste liquid discharge valve (17), and a temperature sensor, a pH electrode and an ion electrode (21) are inserted into the titration cell (14);
a stirring impeller (15) is arranged in the titration cell (14), and a stirrer (16) is matched with the stirring impeller (15) in the titration cell (14);
the titrant dosing metering pump (9), the temperature sensor, the pH electrode, the ion electrode (21) and the display (20) are connected with the input end of the controller (19), and the output end of the controller (19) is connected with the sampling control valve (2), the sampling metering pump (4), the flushing water metering pump (5), the alkaline agent dosing metering pump (6), the masking agent dosing metering pump (7), the barium salt standard solution dosing metering pump (8), the titrant dosing metering pump (9), the stirrer (16), the waste liquid discharge valve (17) and the display (20).
2. The high-hardness wastewater scaling ion online monitoring system according to claim 1, wherein a Y-shaped filter (3) is arranged on the sample inlet pipeline (1).
3. The high-hardness wastewater scale-forming ion online monitoring system according to claim 1, wherein the demineralized water outlet of the chemical tank (22) is communicated with the rinsing water metering pump (5) through a rinsing pipe (10).
4. The high-hardness wastewater scaling ion online monitoring system according to claim 1, wherein an alkaline agent outlet of the agent tank (22) is communicated with an alkaline agent dosing metering pump (6) through a first dosing pipe;
a masking agent outlet of the chemical box (22) is communicated with a masking agent dosing metering pump (7) through a second dosing pipe;
a barium salt standard solution outlet of the chemical box (22) is communicated with a barium salt standard solution dosing metering pump (8) through a third dosing pipe;
the outlet of the flushing water metering pump (5) is communicated with the inlet of the titration cell (14) through a flushing water pipe.
5. The high-hardness wastewater scale forming ion online monitoring system according to claim 1, wherein a titrant outlet of the chemical tank (22) is communicated with a titrant dosing pump (9) through a titrant pipeline (12).
6. The high-hardness wastewater scaling ion online monitoring system according to claim 1, further comprising a porous plate (13) for limiting the flushing water pipe, the first dosing pipe, the second dosing pipe, the third dosing pipe, the titrant pipeline (12), the temperature sensor, the pH electrode and the ion electrode (21).
7. The on-line monitoring method for the high-hardness wastewater scale forming ions is characterized in that the on-line monitoring system for the high-hardness wastewater scale forming ions based on the claim 1 comprises the following steps:
1) the method comprises the steps that demineralized water enters a titration cell (14) through a flushing pipeline (10) and a flushing water metering pump (5), a stirrer (16), an alkaline medicament dosing metering pump (6), a masking agent dosing metering pump (7), a barium salt standard solution dosing metering pump (8) and a titrant dosing metering pump (9) are started to discharge bubbles in a first dosing pipe, a second dosing pipe, a third dosing pipe and a titrant pipeline (12), a temperature sensor, a pH electrode, an ion electrode (21) and the titration cell (14) are flushed, then the alkaline medicament dosing metering pump (6), the masking agent dosing metering pump (7), the barium salt standard solution dosing metering pump (8), the titrant dosing metering pump (9), the stirrer (16) and the flushing water metering pump (5) are closed in sequence, a waste liquid discharge valve (17) is started, waste liquid in the titration cell (14) is emptied, then closing the waste liquid discharge valve (17) to finish washing;
2) a water sample to be tested enters a titration cell (14) through a sampling metering pump (4), the titration cell (14) is rinsed, then a waste liquid discharge valve (17) is opened, the titration cell (14) is emptied, then the waste liquid discharge valve (17) is closed, and then the water sample to be tested is sent into the titration cell (14) through the sampling metering pump (4) to finish sampling;
3) opening an alkaline medicament dosing metering pump (6), a masking agent dosing metering pump (7) or a barium salt standard solution dosing metering pump (8) according to the test requirement, and adding an alkaline medicament, a masking agent or a barium salt standard solution into a titration cell (14);
4) starting a stirrer (16), starting metering titration by using a titrant dosing metering pump (9), transmitting titration information to a controller (19) by using the titrant dosing metering pump (9) in real time, detecting the temperature, the pH value and the potential information of a water sample to be detected in a titration tank (14) in real time through a temperature sensor, a pH electrode and an ion electrode (21), judging a titration end point according to the potential information detected by the ion electrode (21), the pH value detected by the pH electrode, the temperature information detected by the temperature sensor and the dropping volume of a titrant standard solution, closing the titrant dosing metering pump (9) and the stirrer (16) when the titration end point is reached, starting a waste liquid discharge valve (17), and discharging waste liquid in the titration tank (14) through a waste liquid discharge pipeline (18);
the controller 19 calculates the volume of the titrant according to the drop counting result of the titrant dosing metering pump 9, and then calculates the concentration of the component to be measured in the water sample to be measured according to the volume of the titrant and the potential value at the end point of the titration obtained by the feedback of the ion electrode 21.
8. The on-line monitoring method for the scale forming ions in the high-hardness wastewater according to claim 7, wherein when the calcium ion concentration in the water sample to be tested is measured, an alkaline agent is added dropwise;
when the total hardness of the water sample is measured, a masking agent is dripped;
when measuring sulfate ions in a water sample to be measured, quantitative and excessive barium salt standard solution is dripped.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552285A (en) * | 2021-05-28 | 2021-10-26 | 华电电力科学研究院有限公司 | Online flue gas sulfur trioxide intermittent monitoring equipment and method |
| CN116298125A (en) * | 2023-03-22 | 2023-06-23 | 重庆中润新材料股份有限公司 | Method for online testing NMP pH value |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005451A1 (en) * | 1990-09-24 | 1992-04-02 | Tecator Ab | A method for measuring the ion concentration of aqueous samples and an arrangement for carrying out the method |
| JPH06167488A (en) * | 1992-11-27 | 1994-06-14 | Meidensha Corp | Method and apparatus for measuring phosphorus concentration |
| CN101694471A (en) * | 2009-10-15 | 2010-04-14 | 承慰才 | Drinking water COD online automatic detection method and detection instrument |
| CN204594952U (en) * | 2015-04-30 | 2015-08-26 | 张林森 | Full-automatic titration type chemical examination machine |
| CN105510397A (en) * | 2015-11-27 | 2016-04-20 | 中国地质大学（武汉） | Remote automatic water quality monitoring system |
| CN106645614A (en) * | 2016-11-10 | 2017-05-10 | 山东省科学院海洋仪器仪表研究所 | A seawater total alkalinity on-line monitoring system |
| CN107966406A (en) * | 2017-12-18 | 2018-04-27 | 南通善水化工科技发展有限公司 | A kind of water quality automatic checkout equipment |
-
2020
- 2020-11-10 CN CN202011248433.0A patent/CN112485315A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005451A1 (en) * | 1990-09-24 | 1992-04-02 | Tecator Ab | A method for measuring the ion concentration of aqueous samples and an arrangement for carrying out the method |
| JPH06167488A (en) * | 1992-11-27 | 1994-06-14 | Meidensha Corp | Method and apparatus for measuring phosphorus concentration |
| CN101694471A (en) * | 2009-10-15 | 2010-04-14 | 承慰才 | Drinking water COD online automatic detection method and detection instrument |
| CN204594952U (en) * | 2015-04-30 | 2015-08-26 | 张林森 | Full-automatic titration type chemical examination machine |
| CN105510397A (en) * | 2015-11-27 | 2016-04-20 | 中国地质大学（武汉） | Remote automatic water quality monitoring system |
| CN106645614A (en) * | 2016-11-10 | 2017-05-10 | 山东省科学院海洋仪器仪表研究所 | A seawater total alkalinity on-line monitoring system |
| CN107966406A (en) * | 2017-12-18 | 2018-04-27 | 南通善水化工科技发展有限公司 | A kind of water quality automatic checkout equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552285A (en) * | 2021-05-28 | 2021-10-26 | 华电电力科学研究院有限公司 | Online flue gas sulfur trioxide intermittent monitoring equipment and method |
| CN116298125A (en) * | 2023-03-22 | 2023-06-23 | 重庆中润新材料股份有限公司 | Method for online testing NMP pH value |
| CN116298125B (en) * | 2023-03-22 | 2023-11-28 | 重庆中润新材料股份有限公司 | Method for online testing NMP pH value |
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