JP6848368B2 - Water treatment process design equipment, methods and programs - Google Patents

Description

The present invention relates to a water treatment process design apparatus, method and program composed of a plurality of water treatment units.

A water treatment process simulator for designing a water treatment process composed of a plurality of water treatment units on a computer is known (see, for example, Non-Patent Document 1). By using the water treatment process simulator, the mass balance and heat balance of the water treatment process can be calculated, and the design calculation of the water treatment unit can be performed automatically.

In the conventional water treatment process simulator, one water treatment flow is drawn in one file, and the design calculation and cost calculation of the water treatment flow are performed. When there are multiple water treatment process candidates, it is necessary to open multiple files in order and set the same input value for each file, which complicates the work for cost comparison.

In addition, in order to compare the cost calculation results, the files are opened one by one, and the cost calculation results are manually copied and pasted into the cells of the spreadsheet software to create a graph, which is troublesome.

In the water treatment system construction support device described in Patent Document 1, in order to construct the water treatment system, a design method that goes back from the downstream to the upstream side is adopted, but this is a water treatment that includes a lot of circulation. It is difficult to apply to processes such as wastewater recovery processes (processes that transfer treated water from the downstream side to the upstream side to reduce the amount of industrial water used and the amount of wastewater), and it is applied to sequential treatment flows without circulation. Limited.

Patent Document 2 discloses a method of proceeding with the calculation in the order of water balance calculation, heat balance calculation, mass balance calculation of each component, and design calculation in performing the balance calculation and design calculation of the water treatment process. This was an efficient method for costing individual water treatment processes rather than multiple.

Japanese Unexamined Patent Publication No. 2013-220389 Japanese Unexamined Patent Publication No. 2014-188457

Report "Water Treatment Process Simulator", Horii and Sasaki, July 2012, EICA

An object of the present invention is to provide a water treatment process design device, method and program capable of efficiently comparing costs of a plurality of water treatment processes.

The water treatment process design device of the present invention includes a drawing unit that draws a water treatment flow including a plurality of water treatment units and a stream connecting the water treatment units on a design screen displayed on the display device, and the drawing unit. It is provided with a display processing unit that displays the water treatment flow drawn by the above on a plurality of pages, and a balance calculation unit that calculates the material balance and the heat balance in the water treatment flow displayed on each page.

In one aspect of the present invention, the drawing unit modifies a part of the configuration of the first water treatment flow on the second page which is a duplicate of the first page on which the first water treatment flow is drawn. It has the function of creating a water treatment flow.

In one aspect of the present invention, a cost calculation unit for calculating the initial cost and / or running cost of the water treatment flow displayed on each page is further provided.

In one aspect of the present invention, the display processing unit displays the calculation result by the cost calculation unit on a separate page.

In one aspect of the present invention, a parameter setting unit for collectively setting the values of design parameters common to the water treatment flows displayed on a plurality of pages is further provided.

In the design method of the water treatment process of the present invention, the first water treatment flow is provided on the first page of the design screen displayed on the display device by arranging a plurality of water treatment units and forming a stream connecting the water treatment units. The process of drawing and the process of creating a second water treatment flow by modifying a part of the configuration of the first water treatment flow in the second page that duplicates the first page are displayed on the first page. It also includes a step of calculating the material balance and the heat balance in the first water treatment flow and the second water treatment flow displayed on the second page. The water treatment flow on the second page may be newly created instead of editing the water treatment flow that duplicates the first page.

One aspect of the present invention further includes a step of calculating the initial cost and / or running cost of the first water treatment flow and the second water treatment flow, and a step of displaying the cost calculation result on a separate page.

In one aspect of the present invention, the values of the design parameters common to the first water treatment flow and the second water treatment flow are collectively set.

The water treatment process design program of the present invention includes a step of drawing a first water treatment flow on the first page of a design screen by arranging a plurality of water treatment units and forming a stream connecting the water treatment units, and the first page. On the second page, which is a duplicate of the first page, a step of creating a second water treatment flow by changing a part of the configuration of the first water treatment flow, or a new second water treatment flow as in the first page. A process of making a computer execute a step of creating and a step of calculating the material balance and the heat balance in the first water treatment flow displayed on the first page and the second water treatment flow displayed on the second page. Is.

According to the present invention, cost comparison of a plurality of water treatment processes can be efficiently performed.

It is a schematic block diagram of the design apparatus of the water treatment process which concerns on embodiment of this invention. It is a functional block diagram realized by executing a design program. It is a figure which shows the creation example of a water treatment flow. It is a figure which shows the example of the design screen of a water treatment flow. It is a figure which shows the display example of the cost comparison result.

Hereinafter, embodiments will be described with reference to FIGS. 1 to 5.

FIG. 1 shows a schematic configuration of a design apparatus for a water treatment process according to the present embodiment. The design device includes an arithmetic control device 1, an input device 2, and a display device 3. The user can input an instruction to the arithmetic control device 1 via the input device 2. A keyboard, mouse, or the like can be used as the input device 2. The display device 3 displays the data output from the arithmetic control device 1. A liquid crystal display or the like can be used as the display device 3.

The calculation control device 1 includes a CPU (central processing unit) 11, a main memory 12, a disk device 13, and an input / output unit 14. Each part of the arithmetic control device 1 is connected via a bus 15. The arithmetic control device 1 receives input from the input device 2 and outputs data to the display device 3 via the input / output unit 14.

The disk device 13 stores the design program 21 executed by the CPU 11. Further, the disk device 13 stores the module information 22 of the water treatment unit and the stream (piping) used in the water treatment process. Here, the water treatment unit includes, for example, a raw water tank, a reverse osmosis membrane filtration device, an ultrafiltration membrane device, a chemical addition tank, an activated carbon tower, a sand filtration tower, a heat exchanger, an evaporation concentrator, a settling tank, and a sludge concentrator. , Pressurized floater, vacuum degassing tower, decarbonization tower, degassing membrane, standard activated sludge tank, nitrification denitrification tank, ion exchange resin tower, softener, electric deionizer, ultraviolet oxidizing device, etc.

The module information 22 incorporates calculation logic for calculating the mass balance, heat balance, and the like of each unit.

Default values of various parameters may be registered in the module information 22. For example, when the water treatment unit is a reverse osmosis membrane filtration device (hereinafter referred to as RO unit), a default value such as a water recovery rate may be registered. The module information 22 includes icon information of each unit displayed as an icon on the display device 3.

The disk device 13 is, for example, a hard disk drive. The design program 21 may be stored in a ROM (not shown) instead of the disk device 13.

The CPU 11 loads the design program 21 in the disk device 13 into the main memory 12 and executes the design program 21. At this time, the module information 22 in the disk device 13 may be loaded into the main memory 12.

With the execution of the design program 21, an area for storing the processing flow of the water treatment process and various calculation results is secured on the main memory 12. The water treatment flow is created by the user, and the creation method will be described later.

FIG. 2 shows a functional block diagram realized by the CPU 11 executing the design program 21. By executing the design program 21, the drawing unit 210, the display processing unit 220, the parameter setting unit 230, the balance calculation unit 240, and the cost calculation unit 250 are realized. The drawing unit 210 includes a unit arrangement unit 211, a stream arrangement unit 212, a stream unit connection unit 213, and a duplication unit 214. The duplication unit 214 has a function of duplicating an existing page, and the drawing unit 210 creates a new "new page" and constructs a water treatment flow there from the beginning. It doesn't matter.

The drawing unit 210 displays icons corresponding to various units and streams on the display device 3 (see window W2 in FIG. 4). The icon is not a simple figure, but has a data area in which the parameter name and its value are stored in a predetermined format for each type of icon.

The unit arrangement unit 211 arranges the unit selected by the user via the input device 2 in the processing flow drawn on the design screen (window W1 of FIG. 4). Each placed unit is given an identification number, and various parameters can be set.

The stream arranging unit 212 arranges the stream selected by the user via the input device 2 in the processing flow drawn on the design screen (window W1 of FIG. 4). The stream unit connection unit 213 connects the arranged stream and the unit. A connection point is prepared for the unit, and the unit and the stream can be connected by matching the position of the start point or the end point of the stream with the connection point. Each stream drawn by the drawing unit 210 is given an identification number, and calculated values such as flow rate, temperature, and concentration of each component can be displayed.

For example, as shown in FIG. 3, the drawing unit 210 arranges the water quality setting units U1 and RO units U2 to U4 based on the instruction from the user, and connects the streams S1 to S7 to the RO units U2 to U4. Three streams are connected to each of the RO units U2 to U4.

The stream S1 connecting the water quality setting unit U1 and the RO unit U2 corresponds to the raw water. The treated water stream S2 that has passed through the reverse osmosis membrane of the RO unit U2 is connected to the RO unit U4. The concentrated water stream S3 of the RO unit U2 is connected to the RO unit U3.

A treated water stream S4 and a concentrated water stream S5 are connected to the RO unit U3. Similarly, the treated water stream S6 and the concentrated water stream S7 are connected to the RO unit U4.

The treated water streams S2, S4, S6 and the concentrated water streams S3, S5, S7 may be changed in color when displayed on the display device 3, or may be changed in line thickness or solid line / broken line. ..

In the design device according to the present embodiment, it is possible to create a plurality of pages in which the water treatment flow is drawn in one file. As shown in FIG. 4, the display processing unit 220 displays a plurality of pages in a window (display area) W1 so as to be switchable by tab switching. The water treatment flow of each page may be drawn by the user, or the drawn page may be duplicated by the duplication unit 214 based on an instruction from the user.

For example, after creating a water treatment flow on the first page, the first page is duplicated to be the second page. On the second page, a new water treatment flow can be created by simple change operations such as reconnecting streams and replacing units. For example, the tank to which the RO treated water is destined is changed, or the membrane deaerator is replaced with a vacuum deaerator.

In the window W2 of FIG. 4, icons of units and streams are displayed. By selecting the unit icon and dragging and dropping it into the window W1, you can place the unit in the water treatment flow. Similarly, the stream can be placed in the water treatment flow by selecting the icon and dragging and dropping it into the window W1. Since the unit is provided with a connection point, the unit and the stream are connected by matching the position of the start point or the end point of the arrow of the stream with the connection point.

The parameter setting unit 230 sets parameters for the unit or stream of the water treatment flow. The parameter setting unit 230 links (links) setting items common to the water treatment flows of a plurality of pages, and when the parameter value of this item is set (changed) in the window W3, the water treatment flow of another page is set. Also reflect. The window W3 is a display area that exists independently, and the display does not change even if the page is switched.

The setting items common to the water treatment flows on multiple pages are, for example, the flow rate, temperature, and water quality of raw water. The water treatment flow for a new page may be created from scratch, but it is convenient to duplicate an existing page and partially edit it (for example, swapping units or reconnecting streams). In addition, the values of various parameters of the new page may be changed from those of the existing page, and the link setting may be added or canceled.

As shown in FIG. 4, a list of setting items common to the water treatment flow of each page is displayed in a window W3 separate from the window W1 in which the water treatment flow page is displayed. The numerical value of the data in this window can be changed as appropriate. You can set the data link by selecting the item for which you want to set the data link and dragging and dropping it to the unit or stream in the water treatment flow displayed in the window W1. Even if the page is duplicated, the setting information related to the data link is inherited, so the parameters of the corresponding unit or stream can be set collectively across the water treatment flow of multiple pages.

In preparation for executing the calculation, set the flow rate of raw water, the temperature, and the concentration of each component. Specifically, the Start unit of FIGS. 3 and 4 sets the values of the flow rate, the temperature, and the concentration of each component. At this time, the corresponding item may be selected from the data in the window W3 and the values may be linked.

When the balance calculation unit 240 receives a calculation execution instruction from the user, the balance calculation unit 240 calculates the water balance and heat balance of the entire treatment flow and the mass balance of each component for each water treatment flow. The balance calculation of a plurality of water treatment flows may be performed in order or in parallel.

For example, for the RO unit, the treated water flow rate and the concentrated water amount are calculated based on the set water recovery rate. In addition, the water quality of treated water and concentrated water is calculated from the set desalination rate of each component.

The balance calculation unit 240 adjusts the flow rate of each unit so that the difference between the inlet flow rate and the outlet flow rate is equal to or less than a predetermined value. The predetermined value is, for example, 0.01.

For each unit, calculate the total inlet heat and total outlet heat to determine the temperature of each stream. The amount of heat can be obtained by the amount of heat = flow rate x specific heat x temperature. Then, for example, in all the units, when | total inlet heat amount-total outlet heat amount | / ((total inlet heat amount + total outlet heat amount) x 0.5) <predetermined value, it is determined that the heat balance has converged. .. The predetermined value is, for example, 0.01.

In each unit, the total inlet component mass flow rate and the total outlet component mass flow rate are calculated for each component. The component mass flow rate can be obtained by component mass flow rate = component concentration × flow rate. Then, for example, in all the units, for each component, | total inlet component mass flow rate-total outlet component mass flow rate | / ((total inlet component mass flow rate + total outlet component mass flow rate) x 0.5) <predetermined value If so, it is determined that the mass balance of each component has converged. The predetermined value is, for example, 0.01.

In many cases, the water treatment flow includes a circulation line that returns the treated water from the downstream side to the upstream side. In the water treatment process simulator, in principle, the unit calculation proceeds from the upstream side to the downstream side, but due to the circulation line, the mass balance and heat balance may not match in the middle unit. At this time, it is preferable to recalculate from the unit whose balance does not match. That is, the entire mass balance and heat balance can be converged by repeatedly performing the operation of searching for a unit whose mass balance or heat balance does not match and performing recalculation from that unit.

The cost calculation unit 250 calculates the cost of the water treatment flow drawn on each page based on the instruction from the user. The calculated costs are the initial cost, the running cost such as the electric power cost, the steam cost, and the cold water cost. The cost calculation of a plurality of water treatment flows may be performed in sequence or in parallel.

The display processing unit 220 outputs the cost of each water treatment flow calculated by the cost calculation unit 250 to a separate page (or a separate window), and displays it in the form of a graph or a table. For example, as shown in FIG. 5, the running cost of each water treatment flow is displayed as a bar graph. This makes it easy to visually compare the costs of multiple water treatment flows.

As described above, according to the present embodiment, when creating a similar water treatment flow, the existing page on which the water treatment flow is created is duplicated, the units are replaced on the duplicated page, and the streams are reconnected. You can easily create a new water treatment flow by making simple edits such as.

In addition, since multiple pages on which the water treatment flow is drawn are included in one file and the setting values of the water treatment flow of each page can be linked as needed, the common parameter value can be changed in one place. Then, the setting value of the water treatment flow on all pages can be changed at the same time. Since common setting items are managed in one place on the file (for example, window W3 in FIG. 4), the complicated work of opening the files one by one and changing the parameters as in the past becomes unnecessary, and the parameters can be changed. It is possible to prevent setting mistakes.

In addition, since the cost calculation results of the water treatment flows on each page can be displayed and compared in the same file, it is possible to quickly and quantitatively determine which water treatment flow is the most appropriate. The cheapest water treatment process can be proposed in a short time from a plurality of water treatment flow candidates prepared in advance for a given design condition.

The present invention is not limited to the above-described embodiment as it is, and at the implementation stage, the components can be modified and embodied within a range that does not deviate from the gist thereof. In addition, various inventions can be formed by an appropriate combination of the plurality of components disclosed in the above-described embodiment. For example, some components may be removed from all the components shown in the embodiments.

1 Arithmetic control device 2 Input device 3 Display device 11 CPU
12 Main memory 13 Disk device 14 Input / output unit 15 Bus 21 Design program 22 Module information 210 Drawing unit 211 Unit arrangement unit 212 Stream arrangement unit 213 Stream unit connection unit 214 Duplicate unit 220 Display processing unit 230 Parameter setting unit 240 Balance calculation unit 250 Cost Calculation Department

Claims (9)

A drawing unit that draws a water treatment flow including a plurality of water treatment units and a stream connecting the water treatment units on the design screen displayed on the display device, and a drawing unit.
A display processing unit that displays the water treatment flow drawn by the drawing unit on a plurality of pages,
The balance calculation unit that calculates the mass balance and heat balance in the water treatment flow displayed on each page,
A parameter setting unit that collectively sets the values of design parameters that are common to water treatment flows displayed on multiple pages, and
Equipped with a,
The display processing unit displays the plurality of pages in a switchable manner in the first display area of the display device, and displays a list of design parameters common to the water treatment flow of the plurality of pages in the second display area.
The parameter setting unit is a water treatment process design device that receives batch setting of design parameter values via a list of design parameters displayed in the second display area. In claim 1, the drawing unit modifies a part of the configuration of the first water treatment flow on the second page which duplicates the first page on which the first water treatment flow is drawn, and performs the second water treatment. A water treatment process design device characterized by having the function of creating a flow. A device for designing a water treatment process according to claim 1 or 2, further comprising a cost calculation unit for calculating the initial cost and / or running cost of the water treatment flow displayed on each page. In claim 3, the display processing unit is a water treatment process design device, characterized in that the calculation result by the cost calculation unit is displayed on a separate page. A water treatment process design apparatus according to any one of claims 1 to 4 , wherein the display of the second display area does not change even if the page of the first display area is switched. In any one of claims 1 to 5, the display processing unit uses the treated water stream and the concentrated water stream included in the water treatment flow to display the line color, thickness, and the like on the display device. Or a water treatment process design device characterized by changing the line type. On the first page of the design screen displayed on the display device, a process of drawing the first water treatment flow by arranging a plurality of water treatment units and forming a stream connecting the water treatment units, and
A second water treatment flow is newly created on the second page, or a second water treatment flow is created by modifying a part of the configuration of the first water treatment flow on the second page which is a duplicate of the first page. And the process to do
The step of calculating the mass balance and the heat balance in the first water treatment flow displayed on the first page and the second water treatment flow displayed on the second page, and
The first page and the second page are switchably displayed in the first display area of the display device, and the design parameters common to the first water treatment flow and the second water treatment flow are displayed in the second display area. The process of displaying the list and
A process of accepting a batch setting of design parameter values common to the first water treatment flow and the second water treatment flow through a list of design parameters displayed in the second display area.
How to design a water treatment process. In claim 7 , the step of calculating the initial cost and / or the running cost of the first water treatment flow and the second water treatment flow, and
The process of displaying the cost calculation result on a separate page,
A method of designing a water treatment process, which is characterized by further providing. The process of drawing the first water treatment flow on the first page of the design screen by arranging multiple water treatment units and forming a stream connecting the water treatment units, and
A second water treatment flow is newly created on the second page, or a second water treatment flow is created by modifying a part of the configuration of the first water treatment flow on the second page which is a duplicate of the first page. And the process to do
The step of calculating the mass balance and the heat balance in the first water treatment flow displayed on the first page and the second water treatment flow displayed on the second page, and
A list of design parameters common to the first water treatment flow and the second water treatment flow is displayed in the first display area of the display device so as to be switchable between the first page and the second page. And the process of displaying
A process of accepting a batch setting of design parameter values common to the first water treatment flow and the second water treatment flow through a list of design parameters displayed in the second display area.
A water treatment process design program characterized by having a computer execute.

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