Management system, management method, and management program

Abstract

To provide an analysis system, management system, analysis method and analysis program, which allow for accurately analyzing samples containing soluble iron.SOLUTION: An analysis system 40 provided herein comprises a collection unit 41 configured to collect soluble iron contained in a sample, a reaction unit 44 for producing a reaction solution, a detection unit 45 configured to detect light absorbance of the reaction solution, and a control device 50 (supply controller) configured to supply the soluble iron collected by the collection unit 41 and a reagent to the reaction unit 44.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an analysis system, a management system, an analysis method, and an analysis program. [Background technology]

[0002] For example, in carbon dioxide capture equipment, carbon dioxide in wastewater or exhaust gas is absorbed and removed in an organic aqueous solution. The iron concentration in the absorbent must be controlled, and manual analysis is performed periodically (for example, weekly).

[0003] Patent Document 1 discloses the removal of suspended solids including iron crud in a filtering device installed in the condensate system of a power plant. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 61-181506 Summary of the Invention [Problem to be solved by the invention]

[0005] For example, by observing the iron concentration in the absorbing solution, it may be possible to discover the presence or absence of rust and the tendency of rust to increase. It is preferable to monitor the iron concentration in the solution not only in the absorbing solution but also in equipment that adds iron components (e.g., wastewater treatment equipment). For this reason, there is a demand for accurate detection of the iron concentration in the solution.

[0006] The present disclosure has been made in consideration of the above circumstances, and aims to provide an analysis system and management system, an analysis method, and an analysis program that are capable of accurately analyzing samples containing soluble iron. [Means for solving the problem]

[0007] A first aspect of the present disclosure is an analysis system including a collection unit that collects soluble iron contained in a sample, a reaction unit that generates a reaction solution, a detection unit that detects absorbance of the reaction solution, and a supply control unit that supplies the soluble iron collected by the collection unit and a reagent to the reaction unit. and an adjustment system that acquires an analysis result in the analysis system and adjusts an iron concentration in the sample based on the analysis result, the adjustment system adjusting the amount of an iron concentration adjusting solution to be added to adjust the iron concentration. It is.

[0008] A second aspect of the present disclosure provides a method for detecting an absorbance of a sample, comprising the steps of: collecting soluble iron contained in a sample; generating a reaction solution from the soluble iron and a reagent; and detecting the absorbance of the reaction solution. obtaining an analytical result and adjusting an iron concentration for the sample based on the analytical result; A step of adjusting the iron concentration by adjusting the amount of iron concentration adjusting solution added; have management This is the method.

[0009] A third aspect of the present disclosure provides a method for detecting an absorbance of a sample, comprising: collecting soluble iron contained in a sample; generating a reaction solution from the soluble iron and a reagent; and detecting an absorbance of the reaction solution. A process of acquiring an analysis result and adjusting the iron concentration of the sample based on the analysis result; and a process of adjusting the iron concentration by adjusting the amount of an iron concentration adjusting solution added. To make a computer execute management It is a program. Effect of the Invention

[0010] According to the present disclosure, an effect is achieved in that a sample containing soluble iron can be analyzed with high accuracy. [Brief description of the drawings]

[0011] [Figure 1] 1 is a diagram showing a configuration example of a wastewater treatment facility according to a first embodiment of the present disclosure. [Diagram 2] 1 is a diagram showing a schematic configuration of an analysis system according to a first embodiment of the present disclosure. [Diagram 3] 2 is a diagram illustrating an example of a hardware configuration of a control device according to the first embodiment of the present disclosure. FIG. [Figure 4] 2 is a functional block diagram showing functions of a control device according to the first embodiment of the present disclosure. FIG. [Diagram 5] FIG. 2 is a diagram showing an example of the relationship between absorbance and iron concentration according to the first embodiment of the present disclosure. [Figure 6]11 is a flowchart illustrating an example of a procedure of an analysis process according to the first embodiment of the present disclosure. [Figure 7] 11 is a flowchart illustrating an example of a procedure of an analysis process according to the first embodiment of the present disclosure. [Figure 8] 11 is a flowchart illustrating an example of a procedure of an analysis process according to the first embodiment of the present disclosure. [Figure 9] 5 is a flowchart showing an example of a procedure of a cleaning process according to the first embodiment of the present disclosure. [Figure 10] 1 is a diagram illustrating a configuration example of a carbon dioxide capture facility according to a first embodiment of the present disclosure. [Figure 11] FIG. 11 is a diagram illustrating a schematic configuration of a management system according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [First embodiment] Hereinafter, a first embodiment of an analysis system, a management system, an analysis method, and an analysis program according to the present disclosure will be described with reference to the drawings. In this embodiment, an example in which the analysis system 40 is applied to a wastewater treatment facility 120 will be described, but the application is not limited to the wastewater treatment facility 120 and can be applied to various devices.

[0013] 1 is a diagram showing an example of the configuration of a wastewater treatment facility 120. Wastewater from, for example, a desulfurization device is stored in a wastewater tank 121. The wastewater from the wastewater tank 121 is supplied to a first neutralization tank 122, where it is mixed with an acid from an acid storage tank 128 and caustic soda from a caustic soda storage tank 129. The wastewater is then supplied from the first neutralization tank 122 to a second neutralization tank 123, where it is mixed with caustic soda from the caustic soda storage tank 129. In this manner, the pH of the wastewater is adjusted.

[0014] The wastewater is supplied from the second neutralization tank 123 to the flocculation tank 124. In the flocculation tank 124, a flocculant (e.g., iron chloride) is supplied from the flocculation dissolution tank 130 and mixed with the wastewater. This forms flocs. The solid content is then recovered as sludge from the flocculation settling tank 125 via the sludge tank 127 and the filtration device 131. Meanwhile, the liquid content is discharged from the discharge line 132.

[0015] Thus, in the wastewater treatment facility 120, iron chloride is added to the wastewater. Since iron chloride is dissolved in the wastewater, the wastewater discharged also contains iron components. In this embodiment, an example will be described in which the discharged wastewater is a liquid analysis target (hereinafter, referred to as a "sample"). Note that the analysis target is not limited to the above, and can be any liquid that contains iron components.

[0016] For this reason, as shown in FIG. 1, an analysis system 40 is applied to a discharge line 132 on the outlet side of the coagulation settling tank 125 via a sampling line 133 .

[0017] Fig. 2 is a diagram showing a schematic configuration of the analysis system 40. As shown in Fig. 2, the analysis system 40 mainly includes a valve PA, a valve PB, a syringe unit 43, a collection unit 41, a reaction unit 44, a detection unit 45, and a control device 50.

[0018] The valve PA selects one reagent from among a plurality of reagents to configure a flow path. That is, the valve PA switches the flow path. The reagent is a chemical used for analysis, such as a color reagent for absorbance detection. In this embodiment, the case where the reagents A to F are used will be described as an example.

[0019] Reagent A is an aqueous solution of ascorbic acid. Reagent B is nitric acid. Reagent C is an aqueous solution of phenanthroline. Reagent D is an aqueous solution of ammonium acetate. Reagent E is methanol. Reagent F is an aqueous solution of ammonium acetate. The number and types of reagents used are not limited to those mentioned above.

[0020] The valve PA has ports 1a to 8a as selection ports, and one of the ports 1a to 8a is selectively opened to the common port Ca. In other words, one of the selected ports 1a to 8a is connected to the common port Ca. A tank T1 storing pure water is connected to the port 1a. A tank T2 storing a reagent F is connected to the port 2a. A tank T3 storing a reagent E is connected to the port 3a. A tank T4 storing a reagent D is connected to the port 4a. A tank T5 storing a reagent C is connected to the port 5a. A tank T6 storing a reagent B is connected to the port 6a. A tank T7 storing a reagent A is connected to the port 7a. A tank T8 storing a reagent G is connected to the port 8a. The reagent G is an aqueous sodium hydroxide solution. The reagent G can be used, for example, for regenerating an iron adsorption cartridge.

[0021] The common port Ca of the valve PA is connected to the valve PB (port 8b). That is, any one of the reagents is selected by the valve PA and supplied to the valve PB.

[0022] In this way, all reagents can be selected on the valve PA side, making it possible to more reliably select one reagent for use in analysis.

[0023] The valve PB selects one path from a plurality of paths (ports 1b to 8b) to form a flow path. That is, the valve PB switches the flow paths in the same manner as the valve PA.

[0024] The valve PB has ports 1b to 8b as selection ports, and one of the ports 1b to 8b is selectively opened to the common port Cb. In other words, one of the selected ports 1b to 8b is connected to the common port Cb. The port 1b is open so that the atmosphere can be sucked in. The port 2b is connected to the detection unit 45. The port 3b is connected to the collection unit 41 via the line 3L. The port 4b is connected to the collection unit 41 via the line 4L. The port 5b is connected to the reaction unit 44. The port 6b is connected to the standard solution tank T9 in which the standard solution is stored. The port 7b is connected to the collection line 133 to which the sample is supplied. The port 8b is connected to the common port Ca of the valve PA.

[0025] The common port Ca of the valve PA is connected to the syringe portion 43. That is, the valve PA selects one of the paths (ports 1b to 8b) and opens the path to the syringe portion 43.

[0026] The syringe section 43 aspirates and delivers liquid. To this end, the syringe section 43 includes a sample loop 51 and a syringe pump 52.

[0027] The sample loop 51 serves as a container for temporarily storing liquid (or gas). Specifically, one end of the sample loop 51 is connected to the common port Cb of the valve PB, and the other end is connected to the syringe pump 52 via the three-way valve 1. The sample loop 51 has a coiled tube configuration, and can temporarily store liquid that enters from the one end. Since the one end is connected to the common port Cb of the valve PB, various chemicals, samples, air, etc. of the valve PA can be sucked in and stored therein.

[0028] In this embodiment, the sample loop 51 is coiled, but is not limited to a coil shape as long as it is a container that can be sucked in and discharged by the syringe pump 52.

[0029] The syringe pump 52 draws a predetermined amount of liquid (or gas) into the sample loop 51. The syringe pump 52 also delivers a predetermined amount of liquid (or gas) from the sample loop 51. That is, the syringe pump 52 performs drawing into the sample loop 51 and delivery from the sample loop 51. The syringe pump 52 changes the pressure state inside the sample loop 51 to perform drawing and delivery.

[0030] Specifically, with the outer cylinder of the syringe pump 52 fixed, the inner cylinder can be pushed and pulled to suck and deliver liquid. The inner cylinder is driven by a motor 53. Depending on the amount of pushing and pulling, liquid can be sucked and delivered with high accuracy.

[0031] The outlet of the syringe pump 52 is connected to C1 of the three-way valve 1. The three-way valve 1 has terminals C1, N1a, and N1b, with N1a being connected to one end of the sample loop 51 and N1b being connected to a tank T1. The three-way valve 1 connects either N1a or N1b to C1.

[0032] The collection section 41 includes a three-way valve 3, a three-way valve 4, and a cartridge 71. In the collection section 41, soluble iron (Fe) contained in the sample is collected, and other components are discharged.

[0033] The three-way valve 3 has terminals C3, N3a, and N3b, with C3 connected to one end of the cartridge 71, N3a connected to port 4b of the valve PB via line 4L, and N3b connected to the reaction vessel 61 of the reaction section 44. The three-way valve 3 connects either N3a or N3b to C3.

[0034] The three-way valve 4 has terminals C4, N4a, and N4b, with C4 connected to the other end of the cartridge 71, N4a connected to port 3b of the valve PB via line 3L, and N4b connected to the waste liquid tank 65. The three-way valve 4 connects either N4a or N4b to C4.

[0035] The cartridge 71 is a chelating resin cartridge. Specifically, the cartridge 71 is composed of a solid-phase extraction agent using a chelating resin. When a sample passes through the cartridge 71, soluble iron is adsorbed, separated, and collected. The collected soluble iron is supplied to the reaction section 44.

[0036] The reaction unit 44 generates a reaction solution. Specifically, the reaction unit 44 includes a reaction vessel 61, and a sample (soluble iron) and a chemical solution are supplied to and mixed in the reaction vessel 61 to generate a reaction solution. A heater 62 is provided for the reaction vessel 61, and the reaction vessel 61 is controlled to an appropriate temperature to promote the reaction.

[0037] A three-way valve 2 is connected to the bottom of the reaction vessel 61. The three-way valve 2 has terminals C2, N2a, and N2b, with C2 being connected to the bottom of the reaction vessel 61, N2a being connected to a pump 63, and N2b being connected to a waste liquid pump 64. The three-way valve 2 connects either N2a or N2b to C2.

[0038] The pump 63 supplies air to the reaction vessel 61. By supplying air to the reaction vessel 61, air bubbling is generated, and the soluble iron and the reagent in the vessel are stirred and mixed. The waste liquid pump 64 discharges unnecessary materials in the reaction vessel 61 to a waste liquid tank 65.

[0039] The detection unit 45 is supplied with the reaction solution and detects the absorbance (optical density). The absorbance is an index showing the degree to which the intensity of light is weakened when light passes through a substance. As will be described later, the iron concentration can be estimated from the absorbance. The detected absorbance is output to the control device 50, which will be described later.

[0040] The reaction solution discharged from the detection unit 45 is discharged into the waste liquid tank 65 via the resistance tube 81 .

[0041] The control device 50 controls various devices in the analysis system 40. Specifically, analysis is performed by controlling various valves and pumps, the syringe pump 52 (motor 53), each three-way valve, the heater 62, etc. Note that it is preferable that automatic analysis is performed under the control of the control device 50. Furthermore, it is preferable that automatic calibration and automatic cleaning are performed.

[0042] FIG. 3 is a diagram showing an example of a hardware configuration of the control device 50 according to the present embodiment. 3, the control device 50 is a computer system, and includes, for example, a CPU 1110, a ROM (Read Only Memory) 1120 for storing programs and the like executed by the CPU 1110, a RAM (Random Access Memory) 1130 that functions as a work area when each program is executed, a hard disk drive (HDD) 1140 as a large-capacity storage device, and a communication unit 1150 for connecting to a network or the like. A solid-state drive (SSD) may be used as the large-capacity storage device. These units are connected via a bus 1180.

[0043] The control device 50 may include an input unit including a keyboard, a mouse, and the like, and a display unit including a liquid crystal display device or the like for displaying data.

[0044] The storage medium for storing the programs executed by the CPU 1110 is not limited to the ROM 1120. For example, it may be another auxiliary storage device such as a magnetic disk, a magneto-optical disk, or a semiconductor memory.

[0045] A series of processing steps for realizing various functions described below are recorded in the form of a program in the hard disk drive 1140 or the like, and the CPU 1110 reads this program into the RAM 1130 or the like and executes information processing and arithmetic processing to realize various functions described below. The program may be installed in the ROM 1120 or other storage medium in advance, may be provided in a state stored in a computer-readable storage medium, or may be distributed via wired or wireless communication means. Examples of computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, and semiconductor memories.

[0046] Fig. 4 is a functional block diagram showing functions of the control device 50. As shown in Fig. 4, the control device 50 includes a supply control unit 151, a regeneration control unit 152, a cleaning control unit 153, a calibration control unit 154, and an estimation unit 155.

[0047] The supply control unit 151 controls the valves PA, PB, three-way valves 1 to 4, syringe pump 52, and the like to control the transportation of reagents and samples. For example, when supplying a sample to collection unit 41, port 7b is selected by valve PB, and the sample is aspirated into sample loop 51 via valve PB, and port 4b is selected by valve PB, and the sample is sent to collection unit 41 via valve PB. In this way, the flow path switching of valves PA and PB is controlled to temporarily store a chemical solution in sample loop 51, and then the chemical solution is sent to collection unit 41. That is, the supply control unit 151 configures a sample supply pipe that supplies the sample to collection unit 41, and supplies the sample to collection unit 41 through the sample supply pipe.

[0048] Furthermore, by selecting port 5b in valve PB, the reaction solution in the reaction vessel 61 can be sucked into the sample loop 51 via the valve PB. Then, by selecting port 2b in valve PB, the reaction solution in the sample loop 51 can be sent to the detection unit 45.

[0049] In this way, the liquid is transported via the sample loop 51. The sample loop 51 is controlled by the syringe pump 52, so that the amount of liquid transported can be adjusted with high precision.

[0050] Furthermore, the supply control unit 151 controls the collection unit 41 to extract soluble iron in the sample and then send the soluble iron to the reaction unit 44. That is, the supply control unit 151 supplies the soluble iron collected in the collection unit 41 and a reagent to the reaction unit 44 to generate a reaction solution. The supply control unit 151 configures an eluate supply pipe that supplies an eluate to the collection unit 41 after supplying the sample to the collection unit 41 through the sample supply pipe, sends the eluate to the collection unit 41 through the eluate supply pipe, and supplies the soluble iron together with the eluate to the reaction unit 44. The eluate is a solution for sending the collected soluble iron to the reaction unit 44. A detailed flow will be described later.

[0051] Furthermore, the supply control unit 151 supplies air into the reaction unit 44 using the pump 63, and agitates the soluble iron and the reagent by air bubbling. That is, after the soluble iron and the reagent are supplied into the reaction vessel 61, air is sent out by the pump 63 in a state where C2 and N2a are connected in the three-way valve 2. By performing air bubbling, it is possible to perform agitation effectively. For example, a longer life of the equipment can be expected compared to the propeller type.

[0052] The regeneration control unit 152 supplies an alkaline solution to the trapping unit 41 after supplying the soluble iron to the reaction unit 44. By supplying an alkaline solution to the chelating resin, the retention ability can be regenerated. Therefore, after the collection of soluble iron and the supply to the reaction unit 44 are completed, a regeneration process of the trapping unit 41 is performed.

[0053] The alkaline solution is, for example, an aqueous solution of sodium hydroxide. That is, the regeneration control unit 152 constitutes an alkaline solution supply pipe that supplies the alkaline solution to the collection unit 41.

[0054] The cleaning control unit 153 supplies pure water to the reaction unit 44 and / or the detection unit 45. Pure water is stored in the tank T1. By controlling the valve PB, the pure water can be supplied from the tank T1 to the reaction unit 44 or the detection unit 45 for cleaning. The pure water control unit may also perform cleaning by circulating the pure water in the tank T1 to other devices or pipes, not limited to the reaction unit 44 and the detection unit 45. That is, the cleaning control unit 153 configures a pure water supply pipe that supplies pure water from the pure water tank to the reaction unit 44, the detection unit 45, etc., and supplies the pure water through the pure water supply pipe.

[0055] The calibration control unit 154 calibrates the detection unit 45 based on a reaction solution (reference reaction solution) in which a standard solution and a reagent are mixed. The standard solution is a solution in which the iron concentration is adjusted in advance. In other words, the iron concentration of the standard solution is known. For this reason, a reaction solution using the standard solution can be created by using the standard solution instead of the sample and performing the same process as the analysis of the sample. Then, the reaction solution can be sent to the detection unit 45 to perform absorbance detection, thereby performing iron concentration analysis on the standard solution with a known iron concentration. If the analysis result is outside a predetermined reference range for the known iron concentration, degradation of the analysis accuracy can be prevented by calibrating the detection unit 45 (or the estimation unit 55) so that it is within the reference range.

[0056] The estimation unit 155 estimates the iron concentration in the sample based on the detected absorbance. For this purpose, the estimation unit 55 acquires the absorbance detection result from the detection unit 45. The absorbance has a correlation with the iron concentration. FIG. 5 is a diagram showing an example of the relationship between the absorbance and the iron concentration. Note that the relationship shown in FIG. 5 can be obtained by performing a test or the like in advance on a sample containing soluble iron.

[0057] The estimation unit 155 estimates the iron concentration from the detected absorbance using the relationship between absorbance and iron concentration as shown in Fig. 5. The relationship between absorbance and iron concentration is shown in Fig. 5 as an example and is not limited thereto.

[0058] Next, an example of the analysis process by the control device 50 described above will be described with reference to FIG. 6, FIG. 7, and FIG. 8. FIG. 6, FIG. 7, and FIG. 8 are flow charts showing an example of the procedure of the analysis process according to the present embodiment. The processes are continuous at points A and B in the flows of FIG. 6, FIG. 7, and FIG. 8, and after S116 in FIG. 6 is executed, S117 in FIG. 7 is executed, and after S132 in FIG. 7 is executed, S133 in FIG. 8 is executed. The flows shown in FIG. 6, FIG. 7, and FIG. 8 are executed, for example, at a predetermined timing for performing the analysis. The flows shown in FIG. 6, FIG. 7, and FIG. 8 may be executed at a period preset for performing the analysis. Note that the flows of FIG. 6, FIG. 7, and FIG. 8 are only examples, and are not limited to the flows of FIG. 6, FIG. 7, and FIG. 8 as long as the sample and the reagent are mixed to generate a reaction solution and the absorbance is detected.

[0059] First, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S101).

[0060] Next, port 7b is selected in valve PB, and a predetermined amount of the sample is collected into sample loop 51 (S102).

[0061] Next, in a state in which port 4b is selected in valve PB, N3a is selected in three-way valve 3, and N4b is selected in three-way valve 4, the pure water and the sample are sent to collection unit 41 (S103). Since the sample passes through cartridge 71 by S103, soluble iron is collected in cartridge 71. Other components of the sample are discharged to waste liquid tank 65.

[0062] Next, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S104).

[0063] Next, port 4b is selected in valve PB, N3a is selected in three-way valve 3, and N4b is selected in three-way valve 4, and in this state, pure water is sent to collection unit 41 (S105). As a result, cartridge 71 is purged.

[0064] Next, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S106).

[0065] Next, port 6a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent B is sampled in sample loop 51 (S107).

[0066] Next, in a state in which port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, reagent B is sent to collection unit 41 (S108). This causes reagent B to pass through cartridge 71 in the opposite direction to the supply of the sample. Therefore, the soluble iron that was collected by reagent B is desorbed, and reagent B and the soluble iron are supplied to reaction vessel 61. In other words, reagent B becomes an eluate.

[0067] Next, port 1b is selected in valve PB, and a predetermined amount of air is sampled into sample loop 51 (S109).

[0068] Next, port 5a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent C is sampled in sample loop 51 (S110).

[0069] Next, port 5b is selected in valve PB to deliver reagent C to reaction vessel 61 (S111).

[0070] Next, the reaction vessel 61 is stirred by air bubbling (S112).

[0071] Next, port 1b is selected in valve PB, and a predetermined amount of air is sampled into sample loop 51 (S113).

[0072] Next, port 7a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent A is sampled in sample loop 51 (S114).

[0073] Next, port 5b is selected in valve PB to deliver reagent A to reaction vessel 61 (S115).

[0074] Next, the reaction vessel 61 is stirred by air bubbling (S116).

[0075] Next, port 1b is selected in valve PB, and a predetermined amount of air is sampled into sample loop 51 (S117).

[0076] Next, port 4a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent D is sampled in sample loop 51 (S118).

[0077] Next, port 5b is selected in valve PB to deliver reagent D to reaction vessel 61 (S119).

[0078] Next, the reaction vessel 61 is stirred by air bubbling (S120).

[0079] In this manner, the sample (soluble iron) and the reagent are mixed in the reaction vessel 61 to generate a reaction solution.

[0080] Next, port 5b is selected in valve PB, and a predetermined amount of the reaction solution is sampled into sample loop 51 (S121).

[0081] Next, port 2b is selected in valve PB, and a predetermined amount of the reaction solution is sent from sample loop 51 to detection section 45 (S122).

[0082] Next, the absorbance of the reaction solution is detected in the detector (S123).

[0083] Next, port 6a is selected in valve PA, and port 8b is selected in valve PB, and a predetermined amount of reagent B is sampled into sample loop 51 (S124).

[0084] Next, in a state in which port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, reagent B is sent to collection unit 41 (S125). As a result, cartridge 71 is washed with reagent B.

[0085] Next, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S126).

[0086] Next, port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, and in this state, pure water is sent to collection unit 41 (S127). As a result, cartridge 71 is washed with pure water.

[0087] Next, port 3a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent E is sampled in sample loop 51 (S128).

[0088] Next, in a state where port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, reagent E is sent to collection unit 41 (S129). As a result, cartridge 71 is regenerated by reagent E. Specifically, organic matter remaining on cartridge 71 is removed by reagent E, and cleaning is performed.

[0089] Next, the port 8a is selected in the valve PA, the port 8b is selected in the valve PB, and a predetermined amount of the reagent G is sampled in the sample loop 51 (S130).

[0090] Next, in a state in which port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, reagent G is sent to collection unit 41 (S131). As a result, cartridge 71 is regenerated with reagent G.

[0091] Next, port 2a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of reagent F is sampled in sample loop 51 (S132).

[0092] Next, in a state in which port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, reagent F is sent to collection unit 41 (S133). As a result, cartridge 71 is regenerated by reagent F. That is, the pH inside cartridge 71 is adjusted by reagent F.

[0093] Next, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S134).

[0094] Next, in a state where port 3b is selected in valve PB, N3b is selected in three-way valve 3, and N4a is selected in three-way valve 4, pure water is sent to collection unit 41 (S135). As a result, cartridge 71 is washed with pure water. The solution for washing and regeneration is sent to reaction vessel 61 and discharged to waste liquid tank 65.

[0095] In the above manner, detection of absorbance for the sample is performed under the control of the control device 50. The detected absorbance is output to the control device 50, and the iron concentration is determined. The iron concentration may be determined by a manual analysis by an operator or the like based on the detected absorbance. By monitoring the iron concentration in the wastewater treatment facility 120, the amount of iron chloride added can be controlled, and excess addition can be suppressed.

[0096] In the sample analysis flows of Figures 6, 7, and 8, a standard solution can be collected instead of a sample to perform analysis of the standard solution. In this case, in S102, port 6b may be selected in valve PB, and a predetermined amount of standard solution may be collected into sample loop 51. The iron concentration in the standard solution is analyzed by carrying out other processes similar to those in Figures 6, 7, and 8. When calibration is performed in calibration control unit 54, the iron concentration in the standard solution analyzed in this manner is compared with the known iron concentration (reference iron concentration) of the standard solution, and if the analyzed iron concentration differs from the reference iron concentration by a predetermined value or more, a calibration process is performed. In this way, deterioration of the analysis accuracy is prevented.

[0097] Next, an example of the cleaning process performed by the control device 50 will be described with reference to Fig. 9. Fig. 9 is a flow chart showing an example of the procedure of the cleaning process according to this embodiment. The flow shown in Fig. 9 is executed, for example, before the start or after the end of the analysis.

[0098] First, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S201).

[0099] Next, port 2b is selected in valve PB, and pure water is sent from the sample loop 51 to the detection section 45 (S202). This cleans the detection section 45. The pure water that has passed through the detection section 45 is discharged into the waste liquid tank 65.

[0100] Next, port 1a is selected in valve PA, port 8b is selected in valve PB, and a predetermined amount of pure water is sampled in sample loop 51 (S203).

[0101] Next, the port 5b is selected in the valve PB, and the pure water is sent from the sample loop 51 to the reaction section 44 (reaction vessel 61) (S204). This cleans the reaction section 44. The pure water that has passed through the reaction section 44 is discharged into the waste liquid tank 65.

[0102] In this manner, the detection unit 45 and the reaction unit 44 are washed. The order of washing the detection unit 45 and the reaction unit 44 is not limited, and only one of them may be washed. It is more preferable to wash the reaction unit 44 multiple times (e.g., three times). When washing multiple times, it is preferable to drain the pure water each time.

[0103] In this embodiment, the analysis system 40 is applied to the wastewater treatment facility 120, but the applicable facility is not limited to the wastewater treatment facility 120. For example, the carbon dioxide recovery facility 140 shown in FIG. 10 may be applied. Specifically, in the carbon dioxide recovery facility 140, a raw material gas containing carbon dioxide is contacted with an absorbing liquid (for example, an alkaline aqueous solution of an amine or the like) in an absorption tower 141 to selectively absorb carbon dioxide into the absorbing liquid. The raw material gas is discharged as off-gas after contact with the absorbing liquid. The absorbing liquid that has absorbed carbon dioxide is heat-treated in a regeneration tower 142 to separate the carbon dioxide. The carbon dioxide is separated and recovered. After the carbon dioxide is separated from the absorbing liquid, the absorbing liquid is supplied again to the absorption tower 141.

[0104] In such a carbon dioxide capture facility 140, it is preferable to monitor the iron concentration of the absorbing solution for the purpose of quality control of the absorbing solution, confirmation of the corrosion state, etc. For this reason, a part of the absorbing solution supplied to the absorption tower 141 may be collected and analyzed as a sample by the analysis system 40. By analyzing the iron concentration of the absorbing solution, it becomes possible to confirm, for example, the presence or absence of rust, an increasing tendency of rust, etc.

[0105] As described above, according to the analysis system and management system, analysis method, and analysis program of the present embodiment, the absorbance of the reaction solution generated by the soluble iron contained in the sample and the chemical solution can be detected, so that the absorbance of the soluble iron in the sample can be detected with high accuracy. For example, if the sample contains a component other than the soluble iron, the component may inhibit the reaction between the soluble iron and the reagent and affect the absorbance detection, but by collecting the soluble iron, the effect of the component can be suppressed.

[0106] A sample supply pipe and an eluate supply pipe are provided, and after soluble iron is collected in the collection section 41, the soluble iron is washed away with the eluate, and the soluble iron and the eluate are supplied to the reaction section 44. Therefore, the collected soluble iron can be supplied to the reaction section 44 more reliably.

[0107] By supplying an alkaline solution to the collection section 41, it is possible to regenerate the retention ability of the chelating resin.

[0108] Since the sample is delivered to the collection unit 41 by the syringe pump 52, the amount of sample delivered can be controlled with high precision. This is expected to reduce the amount of sample used.

[0109] Air is supplied to the reaction section 44 by the pump 63 to stir the mixture by air bubbling, so that the soluble iron and the reagent can be mixed more reliably.

[0110] By supplying pure water to the reaction section 44 and / or the detection section 45, cleaning can be performed.

[0111] Since the reaction solution is based on a mixture of a standard solution in which the iron concentration has been adjusted in advance and a reagent, the iron concentration is known, making it possible to calibrate the detection unit 45.

[0112] Second Embodiment Next, an analysis system, a management system, an analysis method, and an analysis program according to a second embodiment of the present disclosure will be described. In this embodiment, the case where the liquid property of a sample is automatically adjusted will be described. The following mainly describes the differences between the analysis system and management system, analysis method, and analysis program according to this embodiment and the first embodiment.

[0113] 11, the management system according to this embodiment is composed of an analysis system 40 and an adjustment system 160. In this embodiment, the analysis system 40 collects samples from a target facility 170. The target facility 170 is the facility from which the sample is collected.

[0114] The adjustment system 160 acquires the analysis results from the analysis system 40, and adjusts the iron concentration in the sample based on the analysis results. As shown in Fig. 11, the adjustment system 160 is provided with a tank 163, a tank 162, and an addition control device 161. The adjustment system 160 may use the iron concentration as the analysis result, or may use absorbance correlated with the iron concentration.

[0115] The tank 163 stores the iron concentration adjusting liquid. The tank 163 is connected to the target equipment 170 by a supply line W1. That is, the iron concentration adjusting liquid is added to the solution in the target equipment 170. A solenoid valve (not shown), a flow meter (not shown), and a pump (not shown) are provided on the supply line W1. The solenoid valve and the pump are controlled by an addition control device 161, which will be described later. The measurement result of the flow meter is transmitted to the addition control device 161.

[0116] The tank 162 stores pure water. The tank 162 is connected to the target equipment 170 by a supply line W2. That is, the pure water is added to the solution in the target equipment 170. A solenoid valve (not shown), a flow meter (not shown), and a pump (not shown) are provided on the supply line W2. The solenoid valve and the pump are controlled by an addition control device 161, which will be described later. The measurement result of the flow meter is transmitted to the addition control device 161.

[0117] The addition control device 161 controls the amount of addition based on the analysis results of the analysis system 40. For example, like the control device 50, it is configured by a computer system (computer system) as shown in Fig. 3. The control device 50 and the addition control device 161 may be configured by different computer systems, or may be integrated into one computer system.

[0118] The addition control device 161 adjusts the iron concentration by adjusting the amount of iron concentration adjustment liquid added. By adding the iron concentration adjustment liquid, the iron concentration of the solution is controlled to fall within a predetermined reference range. For example, the solenoid valve is opened and the liquid is added using a pump while monitoring the amount added with a flow meter. The method of adjusting the iron concentration is not limited to the above. For example, the amount added may be determined according to the detected iron concentration value. The iron concentration of the solution may also be adjusted by adding pure water.

[0119] The management system may be provided with a notification system (not shown). The notification system acquires the analysis results from the analysis system 40, and notifies of an abnormality if the analysis results are not within a preset management standard range. The notification may be made within the facility in which the target facility 170 is installed, or may be made by transmitting information to a remote facility. By notifying of an abnormality when the management standard range is exceeded, it is possible to prevent the abnormal state from being left unattended.

[0120] As described above, the analysis system and management system, analysis method, and analysis program according to the present embodiment can automatically adjust the liquidity of the sample by adjusting the iron concentration based on the analysis results, thereby reducing human errors by operators and shortening the operation time.

[0121] The present disclosure is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit and scope of the invention.

[0122] The analysis system, management system, analysis method, and analysis program described in each of the above-described embodiments can be understood, for example, as follows. The analytical system (40) according to the present disclosure includes a collection unit (41) that collects soluble iron contained in samples (A to G), a reaction unit (44) that generates a reaction solution, a detection unit (45) that detects the absorbance of the reaction solution, and a supply control unit (151) that supplies the soluble iron collected in the collection unit and a reagent to the reaction unit.

[0123] According to the analysis system of the present disclosure, since it is possible to detect the absorbance of the reaction solution generated by the soluble iron contained in the sample and the chemical solution, it is possible to detect the absorbance of the soluble iron in the sample with high accuracy. For example, if the sample contains a component other than the soluble iron, the component may inhibit the reaction between the soluble iron and the reagent and affect the absorbance detection, but by collecting the soluble iron, the effect of the component can be suppressed.

[0124] In the analytical system according to the present disclosure, the trapping section may trap the soluble iron by a solid-phase extraction agent using a chelating resin.

[0125] According to the analytical system of the present disclosure, it is possible to effectively capture soluble iron by using a solid-phase extraction agent that uses a chelating resin.

[0126] The analysis system according to the present disclosure may include a sample supply pipe that supplies a sample to the collection section, and an eluate supply pipe that supplies an eluate to the collection section, and the supply control section may supply the sample to the collection section via the sample supply pipe, and then send the eluate to the collection section via the eluate supply pipe, and supply the soluble iron to the reaction section together with the eluate.

[0127] According to the analytical system of the present disclosure, a sample supply pipe and an eluate supply pipe are provided, and after soluble iron is collected in the collection section, the soluble iron is washed away with the eluate, and the soluble iron and the eluate are supplied to the reaction section. This makes it possible to more reliably supply the collected soluble iron to the reaction section.

[0128] The analysis system according to the present disclosure may include an alkaline solution supply pipe that supplies an alkaline solution to the collection section, and a regeneration control section (152) that supplies the alkaline solution to the collection section after supplying the soluble iron to the reaction section.

[0129] According to the analysis system of the present disclosure, it is possible to regenerate the retention capacity of the chelating resin by supplying an alkaline solution to the collection section.

[0130] The analysis system according to the present disclosure may further include an estimation unit (155) that estimates the iron concentration in the sample based on the detected absorbance.

[0131] According to the analysis system of the present disclosure, the iron concentration can be estimated based on the absorbance.

[0132] The analysis system according to the present disclosure may include a syringe pump (52) that draws liquid into a container and delivers a predetermined amount of liquid from the container, and the supply control unit may control the syringe pump to deliver a sample to the collection unit.

[0133] According to the analysis system of the present disclosure, the sample is delivered to the collection unit by a syringe pump, so the amount of sample delivered can be controlled with high precision, which is expected to reduce the amount of sample used.

[0134] The analytical system according to the present disclosure may include a pump (63) for supplying air to the reaction section, and the supply control section may supply air into the reaction section using the pump and agitate the soluble iron and reagent by air bubbling.

[0135] According to the analytical system of the present disclosure, air is supplied to the reaction section by a pump to stir the reaction mixture by air bubbling, so that the soluble iron and the reagent can be mixed more reliably.

[0136] The analysis system according to the present disclosure may include a pure water tank (T1) for storing pure water, a pure water supply pipe for supplying pure water from the pure water tank to the reaction section and / or the detection section, and a cleaning control section (153) for supplying pure water to the reaction section and / or the detection section via the pure water supply pipe.

[0137] According to the analysis system of the present disclosure, it is possible to perform cleaning by supplying pure water to the reaction section and / or the detection section.

[0138] The analysis system according to the present disclosure may include a standard solution tank (T9) that stores a standard solution having a pre-adjusted iron concentration, and a calibration control unit (154) that calibrates the detection unit based on the reaction solution obtained by mixing the standard solution with a reagent.

[0139] According to the analysis system of the present disclosure, since the reaction solution is a mixture of a standard solution in which the iron concentration has been adjusted in advance and a reagent, the iron concentration is known, making it possible to calibrate the detection unit.

[0140] The management system according to the present disclosure includes the above-mentioned analysis system, and an adjustment system (160) that acquires analysis results from the analysis system and adjusts the iron concentration of the sample based on the analysis results.

[0141] According to the management system of the present disclosure, the iron concentration is adjusted based on the analysis results, thereby making it possible to automatically adjust the liquidity of the sample.

[0142] In the management system according to the present disclosure, the adjustment system may adjust the iron concentration by adjusting the amount of iron concentration adjusting liquid added.

[0143] According to the management system of the present disclosure, the iron concentration can be adjusted.

[0144] The management system according to the present disclosure may include a notification system that notifies of an abnormality when the analysis result is not within a preset management standard range.

[0145] According to the management system of the present disclosure, by notifying an abnormality when a deviation from the management standard range occurs, it is possible to prevent an abnormal state from being left unattended.

[0146] The analytical method disclosed herein includes a step of collecting soluble iron contained in a sample, a step of generating a reaction solution using the soluble iron and a reagent, and a step of detecting the absorbance of the reaction solution.

[0147] The analysis program of the present disclosure causes a computer to execute a process of collecting soluble iron contained in a sample, a process of generating a reaction solution using the soluble iron and a reagent, and a process of detecting the absorbance of the reaction solution. [Explanation of symbols]

[0148] 1~4: Three-way valve 1a~8a: Port 1b~8b: Port 40:Analysis system 41: Collection section 43: Syringe part 44: Reaction section 45: Detection section 50: Control device 51: Sample Loop 52: Syringe pump 53: Motor 54: Calibration control section 55: Estimation part 61: Reaction vessel 62: Heater 63: Pump 64: Waste pump 65: Waste tank 71: Cartridge 81:Resistance tube 120: Wastewater treatment facilities 121: Drain tank 122: 1st neutralization tank 123:Second neutralization tank 124: Flocculation tank 125: Coagulation and settling tank 127: Sludge tank 128: Acid storage 129: Caustic soda storage 130: Coagulant dissolution storage 131: Filtration equipment 132: Discharge line 133: Collection line 140: Carbon dioxide capture equipment 141: Absorption tower 142: Regeneration Tower 151: Supply control unit 152: Playback control unit 153: Cleaning control section 154: Calibration control section 155:Estimation part 160: Adjustment system 161: Addition control device 162: Tank 163: Tank 170: Target equipment 1110: CPU 1120 :ROM 1130:RAM 1140: Hard disk drive 1150: Communications Department 1180: Bus A to G: Reagents Ca~Cb: Common port PA~PB: Valve T1~T9: Tank W1~W2: Supply line

Claims

1. A collection unit that collects soluble iron contained in the sample; A reaction section for generating a reaction solution; A detection unit for detecting absorbance of the reaction solution; a supply control unit that supplies the soluble iron collected in the collection unit and a reagent to the reaction unit; An analysis system comprising: an adjustment system that acquires an analysis result in the analysis system and adjusts an iron concentration of the sample based on the analysis result; Equipped with The adjustment system is a management system that adjusts the iron concentration by adjusting the amount of iron concentration adjusting liquid added.

2. The management system according to claim 1 , wherein the collection unit collects the soluble iron by a solid-phase extraction agent using a chelating resin.

3. a sample supply pipe for supplying a sample to the collection section; an eluate supply pipe for supplying an eluate to the collection section; Equipped with 3. The management system according to claim 1 or 2, wherein the supply control unit supplies the sample to the collection unit through the sample supply pipe, and then sends the eluate to the collection unit through the eluate supply pipe, and supplies the soluble iron to the reaction unit together with the eluate.

4. an alkaline solution supply pipe for supplying an alkaline solution to the collection section; a regeneration control unit that supplies the soluble iron to the reaction unit and then supplies the alkaline solution to the collection unit; The management system according to claim 2 , comprising:

5. The management system according to claim 1 , further comprising an estimation unit that estimates an iron concentration in the sample based on the detected absorbance.

6. a syringe pump for drawing liquid into a container and dispensing a predetermined amount of liquid from the container; The management system according to claim 1 , wherein the supply control unit controls the syringe pump to send the sample to the collection unit.

7. A pump is provided for supplying air to the reaction section, The management system according to claim 1 , wherein the supply control unit supplies air into the reaction unit using the pump, and agitates the soluble iron and the reagent by air bubbling.

8. A pure water tank storing pure water; a pure water supply pipe that supplies pure water from the pure water tank to the reaction unit and / or the detection unit; a cleaning control unit that supplies pure water to the reaction unit and / or the detection unit through the pure water supply pipe; The management system according to claim 1 , further comprising:

9. A standard solution tank storing a standard solution having a pre-adjusted iron concentration; a calibration control unit that calibrates the detection unit based on the reaction solution obtained by mixing the standard solution and a reagent; The management system according to claim 1 , further comprising:

10. The management system according to claim 1 , further comprising a notification system that notifies an abnormality when the analysis result is not within a preset management standard range.

11. collecting soluble iron contained in the sample; generating a reaction solution from the soluble iron and a reagent; detecting absorbance of the reaction solution; obtaining an analytical result and adjusting an iron concentration for the sample based on the analytical result; A step of adjusting the iron concentration by adjusting the amount of iron concentration adjusting solution added; A management method having the following features.

12. A process for collecting soluble iron contained in the sample; A process for producing a reaction solution using the soluble iron and a reagent; A process of detecting absorbance of the reaction solution; obtaining an analytical result and adjusting the iron concentration of the sample based on the analytical result; A process of adjusting the iron concentration by adjusting the amount of iron concentration adjusting solution added; A management program for running the following on a computer.

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