Design support method and design support system of water treatment system

Abstract

To provide a design support method capable of efficiently designing a water treatment system having a plurality of flow rate patterns.SOLUTION: A method includes steps of: inputting a water quantity of at least one kind of treatment water output from a water treatment system S1; inputting or calculating a water quantity of raw water S4; making a water treatment flow that includes a water treatment device based on the water quantity of at least treatment water having been input S2; making a plurality of flow rate patterns of the water treatment flow S3; comparing treatment amounts of the water treatment device of the plurality of flow rate patterns and calculating the maximum value S5; and determining a specification of the water treatment device based on the maximum value of the treatment amount of the water treatment device in the plurality of flow rate patterns S6. After the step S3 of making the plurality of flow rate patterns of the water treatment flow, a calculation unit automatically performs the step S5 where treatment amounts of the water treatment device in the plurality of flow rate patterns are compared and the maximum value is calculated.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a design support method and a design support system for a water treatment system. [Background technology]

[0002] Conventionally, various water treatment systems have been used, such as various wastewater treatment systems, water treatment systems for producing tap water and industrial water, and pure water production systems. Such water treatment systems are rarely composed of only one water treatment device. For example, a typical pure water / ultrapure water production system is composed of a combination of various water treatment devices, such as a filtration device, a reverse osmosis membrane (RO membrane) device, and an ion exchange device, and the various water treatment devices operate individually to achieve the required water quality. Designing such a water treatment system requires knowledge of various unit devices and knowledge of the physical properties and quality of water, which requires a great deal of time and effort.

[0003] Patent Document 1 proposes a technology for using a computer to assist in the design of a water treatment system in order to reduce the time and effort required for designing the system. Patent Document 2 proposes a design device that can efficiently compare the costs of multiple water treatment processes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6200046 [Patent Document 2] Patent No. 6848368 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional design devices and design support systems for water treatment systems such as those disclosed in Patent Documents 1 and 2 make it possible to construct a good water treatment system based on the quality of the raw water, the quality of the treated water, the amount of the treated water, etc., and from one flow rate pattern created in the process, the specifications of the water treatment equipment (unit equipment) and its treatment process (unit operation) included in the water treatment system are determined. Specifically, from the treatment volume required for one water treatment equipment, a specific type of equipment to be adopted as the water treatment equipment is selected, and the capacity of the storage tank and pump, which are ancillary equipment, is determined.

[0006] However, the treatment amount of the water treatment device provided in the water treatment system is not always the same, and may vary greatly depending on the operating status of the factory where the water treatment system is installed, seasonal fluctuations, the possibility of recovering and reusing wastewater, etc. Therefore, the water treatment system may have multiple flow patterns assuming various cases. The designer of the water treatment system considers the expected flow patterns and determines the equipment size of each water treatment device so that they can be satisfied. Multiple flow patterns can be created using commercially available process simulation software, spreadsheet software, etc. However, the designer needs to check each treatment amount of the water treatment device provided in the water treatment system in multiple flow patterns one by one and find the maximum value of those treatment amounts. Then, based on that maximum value, the specifications of each water treatment device must be determined and the model to be adopted must be selected. This is because if a water treatment device of a model that can tolerate the maximum value of the treatment amounts in multiple flow patterns is not adopted, the expected flow pattern may not be realized. Therefore, it is necessary to refer to the multiple flow patterns created in order, compare the treatment amounts of the water treatment device in each flow pattern, and check the maximum value of those treatment amounts individually for each water treatment device. As described above, it is very complicated to determine the specifications of the water treatment device to be adopted in the water treatment system and to select the model.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a design support method and system that can efficiently design a water treatment system having a plurality of flow rate patterns. [Means for solving the problem]

[0008] The design support method for a water treatment system of the present invention includes the steps of inputting the volume of at least one type of treated water output from the water treatment system, inputting or calculating the volume of raw water supplied to the water treatment system, creating a water treatment flow including a water treatment device based on at least the input volume of the treated water, creating multiple flow rate patterns for the water treatment flow, comparing the treatment volumes of the water treatment device in the multiple flow rate patterns to find a maximum value, and determining the specifications of the water treatment device based on the maximum value of the treatment volume of the water treatment device in the multiple flow rate patterns, and is characterized in that after the step of creating multiple flow rate patterns for the water treatment flow, a calculation unit automatically performs the step of comparing the treatment volumes of the water treatment device in the multiple flow rate patterns to find a maximum value. Effect of the Invention

[0009] According to the design support method and design support system of the present invention, it is possible to efficiently design a water treatment system having a plurality of flow rate patterns. [Brief description of the drawings]

[0010] [Figure 1] 1 is a block diagram showing an example of a water treatment system designed using the design support system and design support method of the present invention. [Diagram 2] FIG. 1 is a block diagram illustrating an example of a design support system for a water treatment system according to the present invention. [Diagram 3] 1 is a flowchart showing a design support method for a water treatment system according to the present invention. [Figure 4]FIG. 1 is a diagram showing a simple configuration example of a water treatment flow created by the design support system and design support method of the present invention, and an example of a screen displaying the treatment volume of each water treatment device in its flow rate pattern during normal operation. [Diagram 5] 1 is a diagram showing an example of a water treatment flow created by the design support system and design support method of the present invention, and an example of a screen displaying the treatment amount of each water treatment device of the flow rate pattern during normal operation. FIG. [Figure 6] FIG. 6 is a diagram showing an example of a screen displaying the water treatment flow shown in FIG. 5 and the treatment amount of each water treatment device in the flow rate pattern during high capacity operation. [Figure 7] FIG. 6 is a diagram showing an example of a screen displaying the water treatment flow shown in FIG. 5 and the treatment amount of each water treatment device in the flow rate pattern when the quality of recovered water deteriorates. [Figure 8] FIG. 6 is a diagram showing an example of a screen displaying the water treatment flow shown in FIG. 5 and the treatment amount of each water treatment device in the summer flow rate pattern. [Figure 9] FIG. 13 is a diagram showing an example of a screen for determining device specifications and model. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram roughly showing an example of a water treatment system at least part of which is designed using the design support system and design support method of the present invention. The water treatment system shown in FIG. 1 has a pretreatment device 1, a primary pure water production device 2, and a subsystem (secondary pure water production device) 3 connected in series in this order in the flow direction of the water to be treated (industrial water in FIG. 1). Although not shown in detail in FIG. 1, the primary pure water production device 2 is equipped with water treatment devices such as an ion exchange resin device and a reverse osmosis membrane (RO membrane) device. The subsystem 3 is equipped with a non-regenerative ion exchange resin device (CP), an ultrafiltration membrane (UF membrane) device, a UV oxidation device, etc. The pretreatment device 1 is equipped with a filtration device, etc.

[0012] This water treatment system can produce three types of treated water: filtered water, pure water, and ultrapure water. Users can use these treated waters according to the purpose. For example, filtered water may be used in a cooling tower as water for the cooling tower. In a cooling tower, the cooling water is cooled using the heat of vaporization, so the amount of water decreases due to vaporization. In addition, when water vaporizes, problems such as ions contained in the water being concentrated and precipitated occur, so a certain amount of water containing ions must be discharged outside the water treatment system, which reduces the amount of water. Filtered water is used to replenish the amount of water that is reduced. In addition, pure water and ultrapure water are used for boiler water, cleaning water for cleaning products such as semiconductors, dilution water for diluting chemicals, etc., and pure water and ultrapure water are used according to the water quality required for each purpose.

[0013] In the water treatment system shown in Figure 1, in order to make effective use of water resources, used pure water and ultrapure water that has been treated in a water treatment device (not shown) and meets a specified water quality is reused as recovered water. In the water treatment system of Figure 1, recovered water is supplied between the pretreatment device 1 and the primary pure water production device 2. The more recovered water there is, the less industrial water (industrial water) can be used. However, if the recovered water is highly contaminated, it is difficult to reuse it, and work and costs are required to purify it, so the amount of recovered water to be reused is decided taking these conditions into consideration.

[0014] The amounts of processing in the pretreatment device 1, the primary pure water production device 2, and the subsystem 3 are determined based on the amounts of filtered water, pure water, and ultrapure water used, the amount of recycled water, and the like. Specifically, the amount of processing in the subsystem 3 is determined based on the amount of ultrapure water used. The amount of processing in the primary pure water production device 2 is determined based on the amount of ultrapure water used and the amount of pure water used. The amount of processing in the pretreatment device 1 (filtration device) is determined based on the amount of ultrapure water used, the amount of pure water used, the amount of filtered water used, and the amount of recycled recycled water. Since the filtered water is water treated in the pretreatment device 1 and is not treated by the primary pure water production device 2 and the subsystem 3, the amount of filtered water used does not affect the amount of processing in the primary pure water production device 2 or the subsystem 3. Since the primary pure water production device 2 and the subsystem 3 are supplied with water treated in the pretreatment device 1 plus recycled recycled water, the amount of recycled recycled water does not affect the amount of processing in the primary pure water production device 2 or the subsystem 3. On the other hand, the amount of water supplied to the primary pure water production system 2 and the subsystem 3 is the amount of water treated in the pretreatment system 1 plus recycled recovered water, so the processing volume of the pretreatment system 1 varies depending on the amount of recycled recovered water.

[0015] The required amount of treatment in each water treatment device included in the water treatment system varies depending on the operating conditions of the factory and the season. For example, in the summer when the temperature is high, the amount of evaporation (vaporization amount) from the cooling tower (not shown) is large, and the amount of water to be replenished for the cooling tower, i.e., the required amount of filtered water, increases. In addition, if the quality of the used pure water or ultrapure water is poor and it is determined that it cannot be used as recovered water, the amount of industrial water required increases. In this way, the amount of usable recovered water and the amount of required industrial water, filtered water, pure water, and ultrapure water may differ depending on the situation, and accordingly, the required amount of treatment of each of the pretreatment device 1, the primary pure water production device 2, and the subsystem 3, more specifically, the required amount of treatment of each of the water treatment devices included in the pretreatment device 1, the primary pure water production device 2, and the subsystem 3, varies. Therefore, it is common to compile and store the required amount of treatment of each water treatment device in each of several assumed situations. The data compiles the required amount of treatment of each water treatment device in this way is called a flow rate pattern. In other words, when designing a water treatment system, multiple flow rate patterns are created and stored.

[0016] In designing a water treatment system, first, there is a stage in which the type of water treatment device to be adopted and the order in which the water treatment devices are arranged are determined to determine the water treatment flow. This stage is called the "device configuration determination stage." Next, there is a stage in which the detailed configuration of each water treatment device included in the water treatment flow is determined. This stage is called the "device specification determination stage." Furthermore, there is a stage in which a specific product (model) is selected by confirming which of multiple existing water treatment device products conforms to the determined device specifications. This stage is called the "model selection stage." As described above, there are multiple flow patterns in the water treatment flow determined in the device configuration determination stage. Therefore, in the device specification determination stage, it is necessary to set the device specifications to be compatible with any flow pattern of the water treatment flow determined in the device configuration determination stage. Each water treatment device constituting the water treatment flow requires a different required treatment amount for each flow pattern, and the required treatment amount of all water treatment devices is not necessarily maximized in one specific flow pattern. In other words, one water treatment device may have a maximum treatment amount in one flow pattern, while another water treatment device may have a maximum treatment amount in a different flow pattern. Therefore, in the stage of determining the equipment specifications, it is necessary to confirm the maximum value of each of the treatment volumes for a plurality of flow patterns for each water treatment device, and to adopt a water treatment device that allows for that maximum value. If a water treatment device with a treatment volume that is too small is adopted, the water treatment system may not be able to produce the desired volume of pure water, ultrapure water, or filtered water, or the water treatment device may break down. Therefore, when moving from the stage of determining the equipment configuration to the stage of determining the equipment specifications, it is necessary to compare the treatment volumes of each water treatment device in all of the flow patterns and find the maximum value among them.

[0017] Usually, the equipment configuration determination stage and the equipment specification determination stage are performed as separate independent processes, and as described above, the designer manually performs the work of comparing the respective treatment amounts of each water treatment device in all flow patterns to find the maximum value. Specifically, in the equipment configuration determination stage, the designer creates a water treatment flow using process simulation software, spreadsheet software, etc., and creates multiple flow patterns for the water treatment flow (normal operation, high operation, when the quality of the recovered water deteriorates, summer, winter, etc.). After that, but before the equipment specification determination stage, the designer opens the files of each flow pattern in the process simulation software, spreadsheet software, etc. one by one, checks the treatment amounts of each water treatment device, and finds and records the maximum value among them. However, when the water treatment flow includes a large number of water treatment devices (for example, 100 or more), which is not shown in the figure, the designer's work of finding the maximum treatment amount of each water treatment device is very cumbersome. Therefore, in the present invention, in order to simplify such work, the equipment configuration determination stage and the equipment specification determination stage can be performed continuously. That is, in the present invention, at the stage of determining the equipment configuration, a plurality of flow patterns for the water treatment flow are created using software incorporated in the design support system of the present invention itself, or using process simulation software, spreadsheet software, or the like, and then the software automatically performs an operation of comparing the respective treatment rates of the water treatment devices for the plurality of flow patterns to find the maximum value among them. Then, data recording the maximum treatment rate of each water treatment device found from the plurality of flow patterns is automatically transmitted to software for determining the equipment specifications. Therefore, the transition from the equipment configuration determination stage to the equipment specification determination stage can be performed as a continuous automatic process without interrupting the work and without the designer having to work by himself, and the work efficiency is extremely good.

[0018] A design support system and a design support method for a water treatment system for realizing the technical idea of ​​the present invention described above will be described in more detail. FIG. 2 is a block diagram showing a schematic example of a design support system for a water treatment system. This design support system includes at least a calculation unit 4, a display unit 5a, an input unit 5b, and a storage unit 6. The calculation unit 4 is composed of a CPU (Central Processing Unit) and the like, and is a part that executes software to determine the device configuration and device specifications. The display unit 5a is a display device that displays the water treatment flow and the like, and the input unit 5b is a part where the designer inputs data and the like, and the display unit 5a and the input unit 5b may be integrated to form a so-called touch panel 5. The storage unit 6 is a part that stores an operation system, various application programs, data, and the like.

[0019] A method for supporting the design of a water treatment system using the design support system for a water treatment system shown in FIG. 2 will be described with reference to the flowchart shown in FIG. 3. When designing a water treatment system, first, the water quality and required water volume of each of the treated waters (pure water, ultrapure water, filtered water, etc.) sent from the water treatment system, the water quality of the raw water (industrial water) to be supplied, and the water quality and water volume of the reusable recovered water are input by the designer manually through the input unit 5b or by data communication from another terminal (step S1). Based on these data, the designer himself or the calculation unit 4 determines the type of water treatment device (e.g., ion exchange resin device, reverse osmosis membrane (RO membrane) device, UF membrane device, UV oxidation device, etc.) to be adopted in the water treatment system, the order in which the water treatment devices are arranged, etc., and creates a water treatment flow (step S2). Then, a plurality of flow rate patterns of the created water treatment flow are created (step S3). For example, the amount of treatment required for each water treatment device varies depending on whether it is in normal operation, high utilization operation, when the quality of recovered water deteriorates (when the quality of recovered water deteriorates and it cannot be reused), in summer (when there is a lot of water evaporation), etc., so flow rate patterns are created that indicate the treatment amount of each water treatment device according to these conditions. Figure 4 shows a water treatment flow with a very simple configuration, and the treatment amount of each water treatment device for the normal flow rate pattern. In the example shown in Figure 4, the amount of treated water (pure water) required by the user (500m3 Based on the water quality and the RO membrane device 7 with a recovery rate of 80%, a water treatment flow including a pure water tank 8 is created. 3 / d, the amount of water passing through the pure water tank 8 is 500m 3 / d, and the amount of permeate passing through the RO membrane device 7 upstream of the pure water tank 8 is also 500 m 3 / d. The recovery rate of the RO membrane device 7 is 80%, so the amount of industrial water supplied to the RO membrane device 7 is (500 m 3 / d) / 0.8=625m 3 In this embodiment, during step S3 of creating the flow rate pattern, step S4 of calculating the amount of industrial water by the calculation unit 4 is performed. The amount of concentrated water by the RO membrane device 7 is 625 m 3 / d-500m 3 / d=125m 3 / d, which becomes wastewater. Note that, although Fig. 4 shows only one flow rate pattern of this water treatment flow (the flow rate pattern during normal operation), in reality, other flow rate patterns (not shown) are also created (flow rate patterns during normal operation, during high capacity operation, when the quality of recovered water deteriorates, in summer, in winter, etc.). The creation of such a water treatment flow and the creation of multiple flow rate patterns of the water treatment flow are so-called device configuration decisions, and can be performed using software built into the design support system of the present invention itself, or using conventional process simulation software, spreadsheet software, etc.

[0020] Next, the calculation unit 4 compares the respective processing amounts of the multiple flow patterns for each of the water treatment devices constituting the water treatment flow, and finds the maximum value among them (step S5). However, if there is a flow pattern that has been set in advance as unadopted for some reason, the processing amount of the water treatment device of the unadopted flow pattern is excluded from the target when finding the maximum value. Based on the maximum processing amount thus found, the calculation unit 4 determines the details (specifications) of each water treatment device (step S6). In this way, the calculation unit 4 automatically finds the maximum processing amount of each water treatment device in order to determine the details (specifications) of each water treatment device, and does not require the work of a designer. Therefore, it is very easy to determine the device configuration and device specifications of a water treatment flow including a large number of water treatment devices, for example, 100 or more. By the calculation unit 4 automatically finding the maximum processing amount of each water treatment device and determining the details (specifications) of each water treatment device, it is also easy to select a specific product (model) of the water treatment device (step S7).

[0021] In the example described here, the amount of raw water (industrial water) is calculated by the calculation unit 4 during step S3 of creating a flow rate pattern, in other words, step S4 of calculating the amount of raw water constitutes part of step S3 of creating a flow rate pattern. However, the method is not limited to this, and the amount of raw water (industrial water) may be input manually from the input unit 5b by the designer or by data communication from another terminal, substantially simultaneously with step S1 of inputting the amount of at least a portion of the treated water.

[0022] In the above example, the volumes of all treated water are input at an early stage of designing the water treatment system, but the method is not limited to this. Only the volumes of some treated water may be input, and the volumes of uninputted treated water may be calculated by the calculation unit 4 during step S3 of creating a flow pattern. For example, when neutralization is performed on at least a portion of the wastewater, the neutralized wastewater is also considered to be one type of treated water. In such a case, the volume of the neutralized wastewater among the treated waters may be calculated by the calculation unit 4 when creating a flow pattern, and the volumes of the other treated waters may be input at an early stage of design.

[0023] Thus, in the present invention, the volumes of all treated water may be input at an early stage of designing the water treatment system, or only the volumes of some of the treated water may be input, and the volumes of the other treated water may be calculated by calculations in the calculation unit 4 when creating a flow rate pattern. Also, the volume of raw water (industrial water) may be input at an early stage of designing the water treatment system, similar to the volume of at least one type of treated water, or may be calculated by calculations in the calculation unit 4 when creating a flow rate pattern.

[0024] A more specific example of the design support system and design support method for a water treatment system according to the present embodiment will be described. In this example, the required water quality and amount of pure water (500 m 3 / d), the quality and amount of ultrapure water required (1000m 3 / d), the quality and amount of filtered water required (300m 3 / d) is input, and the quality and volume of reusable reclaimed water (500m 3 / d) and the like are input. Based on the input contents, using software incorporated in the design support system of the present invention itself, or using conventional process simulation software, spreadsheet software, and the like, it is decided to install a raw water tank 9, a filtration device 10, and a filtrate tank 11, which roughly correspond to the pretreatment device 1 in FIG. 1, as shown in FIG. 5. It is also decided to install a cation exchange resin device 12, a decarbonation device 13, an anion exchange resin device 14, a pure water tank 15, and a degassing membrane 16, which roughly correspond to the primary pure water production device 2 in FIG. 1. It is also decided to install a sub-tank 17, a UV oxidation device 18, a non-regenerative ion exchange resin device 19, and a UF membrane device 20 with a recovery rate of 90%, which roughly correspond to the subsystem 3 in FIG. 1. In this way, the water treatment flow shown in FIGS. 5 to 8 is created. The creation of the water treatment flow may be assisted by the designer by dragging and arranging the icons of the water treatment devices on the touch panel 5. FIGS. 5 to 8 are schematic views of the touch panel 5 of the design support system for the water treatment system of this embodiment. The display of this touch panel 5 comprises a palette section and a canvas section. A list of unit equipment is displayed in the palette section, and the created water treatment flow is displayed in the canvas section. The unit equipment to be adopted is selected from the list in the palette section and placed in the canvas section. A water treatment flow is created by arranging the selected unit equipment side by side between the industrial water or recovered water input as the inlet boundary, and the treated water or wastewater input as the outlet boundary. Since multiple flow rate patterns are created for the created water treatment flow, which flow rate pattern to display on the touch panel can be selected by pressing one of the buttons labeled "Normal operation", "High utilization operation", "When recovered water quality deteriorates", "Summer", etc.

[0025] The amount of water to be treated by each water treatment device is determined based on the amount of water required. 3 / d of ultrapure water is required, and 300 m 3In the case where the sub-tank 17 is configured such that the amount of water that is returned to the sub-tank 17, the UV oxidation device 18, the non-regenerative ion exchange resin device 19, and the UF membrane device 20 in the subsystem 3 is 1,444 m 3 The sub-tank 17 contains 300 m3 of the permeate from the UF membrane device 20. 3 / d is returned, so the amount of water supplied from the primary pure water production device 2 to the sub-tank 17 is 1144 m 3 / d. In this way, the amount of water supplied from the primary pure water production system 2 to the sub-tank 17 is 1144 m 3 / d, and the amount of pure water required is 500m 3 / d, and the pure water tank 15 of the primary pure water production apparatus 2 is connected to the cation exchange resin device 12 and the anion exchange resin device 14 on the upstream side by 10 m each. 3 In order to return the cleaning water of 1 / d, the primary pure water production system 2 has a cation exchange resin device 12, a decarbonation device 13, an anion exchange resin device 14, and a pure water tank 15 with a processing capacity of 1664 m 3 / d. However, the processing capacity of the degassing membrane 16 downstream of the pure water tank 15 is 1144 m 3 As described above, the processing capacity of the cation exchange resin device 12 of the primary pure water production system 2 is 1664 m 3 / d, and the amount of filtered water required is 300m 3 / d, and the filtrate tank 11 of the pretreatment device 1 contains 144 ml of concentrated water from the UF membrane device 20 of the subsystem 3. 3 / d and 500m of recovered water 3 / d is supplied to the upstream filtration device 10, and 25 m 3 To return the cleaning water from the pretreatment device 1, the processing capacity of the filtrate tank 11 of the pretreatment device 1 is 1345 m 3 As described above, the filtration device 10 is provided with a 25 m 3 The cleaning water from the filtration device is returned to the 3 / d of cleaning wastewater is discharged, so the processing capacity of the filtration device 10 is 1345 m 3 / d, and raw water tank 9 contains 1345m 3 / d of industrial water is supplied (that is, in this embodiment, the amount of raw water (industrial water) is not input at an initial stage, but is calculated by the calculation unit 4 when the flow rate pattern is created). This is the flow rate pattern during normal operation of the water treatment flow shown in FIG. 5. As shown in Table 1 below, with this flow rate pattern during normal operation of the water treatment flow, the treatment volume of the pretreatment device 1 is approximately 1,345 m 3 / d, and the processing capacity of the primary pure water production equipment 2 (excluding the degassing membrane 16) is approximately 1664 m 3 / d, and the processing volume of subsystem 3 is approximately 1444m 3 / d. As an example, a configuration may be adopted in which a button called a "calculation button" is provided on the touch panel 5, and by clicking the button, the treatment amount of each water treatment device as described above is calculated, input, and displayed. Alternatively, a configuration may be adopted in which the treatment amount of each water treatment device as described above is calculated, input, and displayed automatically, that is, without clicking a specific button on the touch panel 5, when the water treatment device is connected to another water treatment device or a tank, or the numerical value of the treatment amount is rewritten on the touch panel 5.

[0026] In the method described above, after creating a water treatment flow in which the treatment amount etc. of each water treatment device is blank, the treatment amount etc. of each water treatment device in a plurality of flow rate patterns of the water treatment flow are displayed. However, the method is not limited to this, and for portions in which the treatment amount has already been determined based on, for example, information from a customer at the stage of creating a water treatment flow in which the treatment amount etc. of each water treatment device is blank, the treatment amount in each flow rate pattern may be input or displayed simultaneously with the creation of the water treatment flow.

[0027] Figure 6 shows the water treatment flow and flow rate pattern during high capacity operation. The amount of pure water required during high capacity operation is 700m 3 / d, the amount of ultrapure water required is 1200m 3 / d, the amount of filtered water required is 400m 3 / d, the amount of reusable water recovered is 600m 3In the same manner as the flow rate pattern during normal operation described above, the treatment volumes of each water treatment device are calculated in order from the downstream side of the water treatment flow. The treatment volumes of the sub-tank 17, UV oxidation device 18, non-regenerative ion exchange resin device 19, and UF membrane device 20 in the subsystem 3 are 1,444 m 3 The primary pure water production system 2 has a total processing capacity of 2064 m3, which is comprised of the cation exchange resin device 12, the decarbonation device 13, the anion exchange resin device 14, and the pure water tank 15. 3 / d. However, the processing capacity of the degassing membrane 16 is 1344 m 3 / d. The processing capacity of the filtrate tank 11 and the filtration device 10 of the pretreatment device 1 is 1745 m 3 / d, and raw water tank 9 contains 1745m 3 This is the flow rate pattern during high capacity operation of the water treatment flow shown in Figure 6. As shown in Table 1, in this flow rate pattern during high capacity operation of the water treatment flow, the treatment volume of the pretreatment device 1 is approximately 1745 m 3 / d, and the processing capacity of the primary pure water production equipment 2 (excluding the degassing membrane 16) is approximately 2064 m 3 / d, and the processing volume of subsystem 3 is approximately 1444m 3 / d.

[0028] Figure 7 shows the water treatment flow and flow rate pattern when the quality of the recovered water is poor and it cannot be reused (when the quality of the recovered water deteriorates). 3 / d, the amount of ultrapure water required is 1000m 3 / d, the amount of filtered water required is 300m 3 / d, the amount of reusable recovered water is 0 m 3 In the same manner as the flow rate pattern during normal operation described above, the treatment volumes of each water treatment device are calculated in order from the downstream side of the water treatment flow. The treatment volumes of the sub-tank 17, UV oxidation device 18, non-regenerative ion exchange resin device 19, and UF membrane device 20 in the subsystem 3 are 1,444 m 3 The primary pure water production system 2 has a total processing capacity of 1664 m3, which is comprised of the cation exchange resin device 12, the decarbonation device 13, the anion exchange resin device 14, and the pure water tank 15. 3 / d. However, the processing capacity of the degassing membrane 16 is 1144 m 3 / d. The processing capacity of the filtrate tank 11 and the filtration device 10 of the pretreatment device 1 is 1845 m 3 / d, and raw water tank 9 contains 1845m 3 This is the flow rate pattern when the quality of the recovered water deteriorates in the water treatment flow shown in Figure 7. As shown in Table 1, in this flow rate pattern when the quality of the recovered water deteriorates in the water treatment flow, the treatment volume of the pretreatment device 1 is approximately 1845 m 3 / d, and the processing capacity of the primary pure water production equipment 2 (excluding the degassing membrane 16) is approximately 1664 m 3 / d, and the processing volume of subsystem 3 is approximately 1444m 3 / d.

[0029] Figure 8 shows the flow pattern in summer when evaporation is high. The amount of pure water required in summer is 500m 3 / d, the amount of ultrapure water required is 1000m 3 / d, the amount of filtered water required is 500m 3 / d, the amount of reusable water recovered is 500m 3 In the same manner as the flow rate pattern during normal operation described above, the treatment volumes of each water treatment device are calculated in order from the downstream side of the water treatment flow. The treatment volumes of the sub-tank 17, UV oxidation device 18, non-regenerative ion exchange resin device 19, and UF membrane device 20 in the subsystem 3 are 1,444 m 3 The primary pure water production system 2 has a total processing capacity of 1664 m3, which is comprised of the cation exchange resin device 12, the decarbonation device 13, the anion exchange resin device 14, and the pure water tank 15. 3 / d. However, the processing capacity of the degassing membrane 16 is 1144 m 3 / d. The processing capacity of the filtered water tank 11 and the filtration device 10 of the pretreatment device 1 is 1545 m 3 / d, and raw water tank 9 contains 1545m 3 This is the summer flow rate pattern of the water treatment flow shown in Figure 8. As shown in Table 1, in this summer flow rate pattern of the water treatment flow, the treatment volume of the pretreatment device 1 is approximately 1545 m 3 / d, and the processing capacity of the primary pure water production equipment 2 (excluding the degassing membrane 16) is approximately 1664 m3 / d, and the processing volume of subsystem 3 is approximately 1444m 3 / d.

[0030] [Table 1]

[0031] As described above, the calculation unit 4 creates a water treatment flow and finds the treatment amount of each water treatment device in each of a plurality of flow patterns of the water treatment flow. Furthermore, the calculation unit 4 compares the treatment amounts in a plurality of flow patterns for each water treatment device and finds the maximum value among them. The maximum value thus found by the calculation unit 4 is used for the next step, which is the determination of the device specifications. That is, the maximum treatment amount of each water treatment device is found based on the data (numerical values) of Table 1 and the like, and the details (specifications) of each water treatment device are determined so that each maximum treatment amount can be realized. The calculation unit 4 may create a plurality of flow patterns of the water treatment flow, which is the device configuration, and determine the device specifications (detailed configuration of the water treatment device), and further, the calculation unit 4 finds the maximum treatment amount in a plurality of flow patterns of each water treatment device and uses it as data for determining the device specifications. That is, the calculation unit 4 can automatically determine the device configuration (particularly, create a plurality of flow patterns of the water treatment flow), find the maximum treatment amount in a plurality of flow patterns of each water treatment device, and determine the device specifications (detailed configuration of the water treatment device) as a series of operations. Furthermore, if data on a specific product (model) of a water treatment device that is compatible with the device specifications determined in this manner is stored in memory unit 6, calculation unit 4 may refer to the data in memory unit 6 and go as far as to select the product (model) of the water treatment device.

[0032] Also, the maximum value of the processing amount of each water treatment device may be displayed on the display unit 5a. In the example shown in FIG. 9, a screen for determining the device specifications (number of series, facility scale, etc.) and model (product) is displayed on the display unit 5a. For example, by double-clicking on each water treatment device (process) on the canvas section shown in FIGS. 5 to 8, the screen may be changed to a screen for determining the device specifications (number of series, facility scale, etc.) and model (product) as shown in FIG. 9. On the screen shown in FIG. 9, the maximum value of the processing amount in a plurality of flow patterns is displayed, and when the designer inputs the operating conditions of the water treatment device (number of series, operating time, etc.), the processing amount per series and per hour is calculated by the calculation unit 4 and displayed on the screen. This determines the appropriate size of the water treatment device. The screen for determining the device specifications and model may display a flow rate other than the maximum value of the processing amount. Also, the model of the device may be determined from the maximum value of the processing amount. In this way, in designing a water treatment system having a plurality of flow patterns, the designer can efficiently grasp the maximum flow rate of the process and determine the specifications.

[0033] As described above, in this embodiment, when the inlet boundary (for example, the flow rate of industrial water and recovered water) and the outlet boundary (water quality and water volume of treated water) are input from the input unit 5b or calculated by the calculation unit 4, a water treatment flow as shown in Figs. 5 to 8 is created, and the calculation unit 4 creates multiple flow rate patterns for the water treatment flow. Next, the calculation unit 4 automatically determines the maximum value of the treatment volume in the multiple flow rate patterns of each water treatment device included in the water treatment flow. Since the designer does not need to check all of the multiple flow rate patterns himself / herself in order to determine the specifications of the water treatment device, it is possible to determine the device specifications very efficiently and easily, especially in a water treatment flow with a large number of water treatment devices. The device specifications based on the maximum treatment volume of the water treatment device automatically determined by the calculation unit 4 may be determined manually by the designer, but it is more preferable that the calculation unit 4 performs the determination automatically. In addition, the device type (product) following the determination of the device specifications may also be determined manually by the designer, but it is also possible to configure the calculation unit 4 to perform the determination automatically.

[0034] In the above-described design support method for a water treatment system, after completing a water treatment flow consisting of a plurality of water treatment devices, the processing amount of each water treatment device is determined to create a plurality of flow patterns, but the method is not limited to such a method. That is, the creation of a water treatment flow and the creation of at least a part of a flow pattern may be performed in parallel. By repeating the process of selecting a water treatment device to be adopted in the water treatment flow and determining the processing amount required for the water treatment device, for example, from the downstream side to the upstream side of the water flow, one flow pattern can be created simultaneously with the creation of a water treatment flow. By sequentially selecting a water treatment device to be adopted and determining the processing amount according to the performance of the selected water treatment device by trial and error while comparing the expected processing amount with each of the various water treatment devices, the water treatment flow and the flow pattern can be created little by little. In this way, the flow pattern created simultaneously with the creation of a water treatment flow may be a flow pattern during normal operation, but may also be another flow pattern. When creating one flow pattern simultaneously with the creation of a water treatment flow, the other flow patterns are created after the water treatment pattern is completed. However, multiple flow patterns may be created in parallel simultaneously with the creation of a water treatment flow. As described above, in the present invention, the step of creating a water treatment flow and the step of creating a flow rate pattern may be independent of each other, or both steps may proceed simultaneously. [Explanation of symbols]

[0035] 1 Pretreatment Equipment 2 Primary water purification equipment 3 Subsystems 4 Arithmetic section 5. Touch Panel 5a Display section 5b Input section 6 Memory section 7 RO membrane device 8 Pure Water Tank 9 Raw Water Tank 10 Filtration equipment 11 Filtered water tank 12 Cation exchange resin device 13 Decarboxylation equipment 14 Anion exchange resin device 15 Pure water tank 16 Degassing membrane 17 Subtank 18 UV oxidation equipment 19 Non-regenerative ion exchange resin device 20 UF membrane equipment

Claims

1. A design support method for a water treatment system, comprising: inputting the amount of at least one type of treated water discharged from the water treatment system; inputting or calculating the amount of raw water supplied to the water treatment system; creating a water treatment flow including the water treatment device based on at least the input water volume of the treated water; creating a plurality of flow patterns for the water treatment flow; A step of comparing the treatment amounts of the water treatment device in the plurality of flow rate patterns to obtain a maximum value; determining specifications of the water treatment device based on the maximum value of the treatment amount of the water treatment device in the plurality of flow rate patterns; A design support method for a water treatment system, characterized in that after a step of creating multiple flow rate patterns for the water treatment flow, a calculation unit automatically performs a step of comparing the treatment volumes of the water treatment device in the multiple flow rate patterns to find the maximum value.

2. The step of inputting or calculating the amount of raw water is performed by inputting the amount of raw water before the step of creating the water treatment flow, 2. The design support method for a water treatment system according to claim 1, wherein in the step of creating the water treatment flow, the water treatment flow is created based on an input amount of the treated water and an input amount of the raw water.

3. the step of inputting or calculating the amount of raw water is performed by calculating the amount of raw water during the step of creating the flow rate pattern; 2. The design support method for a water treatment system according to claim 1, wherein in the step of creating the water treatment flow, the water treatment flow is created based on an input amount of the water to be treated.

4. 2. The design support method for a water treatment system according to claim 1, wherein in the step of inputting the amount of at least one type of treated water, the amount of all treated water is input.

5. In the step of inputting the amount of at least one type of treated water, only the amount of a part of the treated water is input, The design support method for a water treatment system according to claim 1 , further comprising the step of calculating a water volume of the water to be treated that has not yet been input during the step of creating the flow rate pattern.

6. A design support method for a water treatment system described in any one of claims 1 to 5, wherein the maximum value of the treatment volume of the water treatment device calculated by the calculation unit is displayed on a display unit, and when operating conditions of the water treatment device are input, the calculation unit determines the specifications of the water treatment device based on the maximum value of the treatment volume of the water treatment device and the operating conditions of the water treatment device.

7. The design support method for a water treatment system according to claim 1 , further comprising the step of determining a model of the water treatment device based on the determined specifications of the water treatment device.

8. 8. The design support method for a water treatment system according to claim 7, wherein a plurality of models of the water treatment device are stored in a memory unit, and the calculation unit determines the model of the water treatment device by selecting one of the plurality of models of the water treatment device stored in the memory unit.

9. The design support method for a water treatment system according to claim 1 , wherein the treatment amount of the water treatment device in the flow rate pattern that has been preset as unadopted is excluded from the step of calculating the maximum value.

10. A design support system for a water treatment system, comprising: an input unit capable of inputting the amount of at least one type of treated water discharged from the water treatment system; A design support system for a water treatment system, comprising: a calculation unit that compares the treatment volumes of a water treatment device in multiple flow rate patterns of a water treatment flow including the water treatment device created based on at least the input water volume of the treated water, and determines the maximum value.

Images