TW201938254A - Water treatment facility management device - Google Patents

Abstract

This water treatment facility management device is provided with: a storage unit which stores inventory information including status information indicating whether or not a water treatment facility can be loaned, water treatment information at a past loan destination of the water treatment facility, and usage history data including a regular work implementation history; an extracting unit which extracts a water treatment facility to serve as a loan candidate; a loan facility determining unit which accepts a loan reservation for the water treatment facility; and a regular work plan developing unit which, for the loan candidate or the water treatment facility for which a loan reservation has been accepted, predicts the timing at which regular work will be carried out at a new loan destination, on the basis of the regular work implementation history at the previous loan destination.

Description

Management device for water treatment equipment

The present invention relates to a management device for a water treatment facility. More specifically, the present invention relates to a management device for performing management of a periodic operation of a water treatment facility that is temporarily lent.

In manufacturing plants such as semiconductors, a large amount of treated water (pure water) from which impurities such as salts are removed when cleaning products is used. With the temporary expansion of the production scale of products, a larger amount of treated water is sometimes required. In order to solve this problem economically, a water treatment equipment providing system has been proposed that temporarily lends water treatment equipment and manages the inventory of various units constituting the water treatment equipment, thereby efficiently supplying water treatment equipment to many factories and Replacement products of various units constituting a water treatment facility (for example, refer to Patent Document 1).

Patent Document 2 proposes a method for predicting the period of cleaning or replacement of a reuse separation membrane based on the flow rate, differential pressure, or flux operation data of a reuse separation membrane. In addition, there is known a management device that associates the identification information of the reused separation membrane with the content of water in the reused separation membrane or the performance inspection information after cleaning, and efficiently manages the inventory of the reused separation membrane. And select a replacement product (for example, refer to Patent Document 3 and Patent Document 4).

In the case of long-term use of the loaned water treatment equipment, water treatment equipment such as separation membranes or ion exchange resins may cause poor treatment due to contamination or deterioration, and therefore require regular maintenance. In order to perform maintenance before the treatment failure occurs, and to perform water treatment stably, an appropriate maintenance plan must be formulated. Previously, each person in charge formulated the maintenance plan based on their own knowledge or experience based on the standard maintenance plan. Therefore, the maintenance plan that has been prepared does not conform to the actual situation, and excessive implementation of maintenance will result in increased costs or processing before maintenance is implemented. Worry.

[Patent Document 1] Japanese Patent No. 5035493
[Patent Document 2] Japanese Patent No. 5498843
[Patent Document 3] Japanese Patent No. 5499844
[Patent Document 4] Japanese Patent No. 5565048

An object of the present invention is to provide a water treatment equipment management device capable of performing a periodic operation on a loaned water treatment equipment at an appropriate timing.

The management device of the water treatment equipment of the present invention includes a storage unit that stores stock information including status information indicating whether the water treatment equipment can be loaned out, water treatment information including past lending locations of the water treatment equipment, and implementation history of regular operations. Use history data; a lottery department, based on the inventory information and water treatment information of the new lending location, draws water treatment equipment to be a candidate for lending; the lending equipment decision unit accepts a lending appointment for water treatment equipment; and The periodic operation plan formulation department predicts the implementation of the periodic operation in the new lending location for the water treatment equipment that is a candidate for lending or has accepted the lending reservation, based on the execution history of the periodic operation in the last lending location. period.

In one aspect of the present invention, a similarity calculation unit is further included, and the similarity calculation unit calculates, for the loan candidate, the water treatment information of the last lending place and the water treatment information of the new lending place. Similarity, and the selected lending candidates are presented together with the similarity.

In one aspect of the present invention, the periodic operation plan formulation unit predicts a time when the periodic operation will be performed for each water treatment unit used in the water treatment facility.

In one aspect of the present invention, the periodic operation plan formulation unit predicts a period of time when a periodic operation is performed at a new lending site for a water treatment facility with a degree of similarity less than a predetermined value based on a standard operation interval of the periodic operation.

In one aspect of the present invention, the water treatment information includes at least any one of types of raw water and treated water, water quantity, water quality, and water temperature.
[Effect of the invention]

According to the present invention, it is possible to perform a regular operation at an appropriate timing for the water treatment equipment that has been loaned.

Hereinafter, embodiments will be described with reference to the drawings.

The management system according to the embodiment of the present invention is a manager who performs a water treatment facility loan to a customer. As shown in FIG. 1, a water treatment unit for constructing a water treatment facility is stored in a plurality of stock sites S, and is distributed to a factory F or the like in response to a customer's request, thereby constructing and installing a water treatment facility. The management device 1 in the management center manages the stock of the water treatment equipment (water treatment unit) stored in the stock base S or the water treatment equipment lent to customers.

When the management device 1 accepts a loan request for water treatment equipment, it determines whether there is a stock of water treatment equipment that meets the required specifications, and presents the determination result. The management device 1 calculates the information on the amount of raw water or treated water at the last borrowed place, water quality, and water temperature for the water treatment equipment in stock, and the amount of raw or treated water at the new (this time) borrowed place. • Similarity of information such as water quality and temperature, and give tips.

The current setting values of various control items of water treatment equipment with high similarity are often the same as (approximately) the setting values of the new lending place. Therefore, after the water treatment equipment with a high degree of similarity is moved into a new lending site, the amount of work required for setting the control items is reduced, and the water treatment equipment can be used to start the water treatment in advance.

The management device 1 predicts the time when periodic operations such as maintenance, parts replacement, and drug replenishment are required for each of the plurality of water treatment units constituting the loaned water treatment equipment, and presents them along with the inventory status of replacement products and the like. Thereby, it is possible to prepare a replacement product or the like which becomes necessary after lending, and to perform a regular operation smoothly.

The management device 1 predicts and decides that each item of the regular operation will be implemented first in the new lending location based on the execution interval of the periodic operation in the last lending location and the period when the periodic operation was last performed in the last lending location. Periods of regular operations and work plans.

Water treatment equipment can be roughly classified into categories such as water treatment equipment, drainage treatment equipment (including water recycling), and water treatment equipment peripheral equipment.

Examples of the water treatment equipment include pure water production equipment such as ultrapure water production equipment, medical pure water production equipment, refined water production equipment, drinking water production equipment, soft water production equipment, and other highly water treatment equipment, seawater desalination equipment, Special water treatment equipment such as functional water manufacturing equipment.

Examples of the wastewater treatment equipment include inorganic wastewater treatment equipment such as chromium drainage treatment equipment, cyanide treatment equipment, fluorine treatment equipment, selenium treatment equipment, heavy metal treatment equipment, aerobic biological treatment equipment, anaerobic biological treatment equipment, and agglutination. Organic drainage treatment equipment such as separation equipment, coolant drainage treatment equipment, plating drainage treatment equipment, rainwater treatment equipment, site drainage treatment equipment and other specific drainage treatment equipment.

Examples of peripheral equipment for water treatment equipment include auxiliary equipment such as boiler equipment, cooling equipment, medicinal equipment, and dehydration equipment; valuable materials such as oil recovery equipment, phosphorus recovery equipment, and fluorine recovery equipment.

Figure 2 is a block diagram of a management system. The water treatment facility 2 installed in a customer's factory F or the like includes a control unit 20, a monitoring unit 21, a communication unit 22, and a plurality of water treatment units 23. The water treatment unit 23 is a device or machine used in a water treatment facility. Pure water production equipment is, for example, activated carbon filters, reverse osmosis membrane modules, electric deionization devices, non-renewable ion exchangers, membrane filters, degassing membranes, water tanks, pumps, valves, and the like. In addition, the drainage treatment equipment is, for example, a measuring device such as an air diffuser, a blower, a dissolved oxygen concentration (DO) meter, or a pH meter, a dipping membrane, a scrubber, a dehydrator, a diffusion device, a water tank, a pump, a valve, and the like. Each water treatment unit 23 is assigned a unique identifier (ID) (identification information).

The monitoring unit 21 uses various sensors (not shown) provided in the water treatment equipment 2 to detect the amount of treated water or the water quality, current, voltage, vibration, temperature, pressure, and the like of the treated water, and monitors the water treatment units 23 Operating conditions. The control unit 20 associates the operation status of each water treatment unit 23 with its identification information, and the communication unit 22 periodically notifies the management device 1 via a network such as the Internet.

The management device 1 includes a central processing unit (CPU) 10 as a control unit that collectively controls the operation of the management device 1. The CPU 10 uses an operating system (OS) program as a basis, and executes middleware or application programs on the basis. The storage section 11, the communication section 12, the display section 13, the input section 14, and the like are connected to the CPU 10 via a bus.

The storage unit 11 includes a read only memory (ROM), a random access memory (RAM), a hard disk device, and the like. Various programs are stored in the ROM, and the CPU 10 executes various processes in accordance with these programs, thereby realizing various functions of the management device 1. The RAM is used as a working memory that temporarily stores data when the CPU 10 executes processing according to a program.

The hard disk device stores stock information of the water treatment equipment (water treatment unit) held, or operation status data indicating the operation status of the water treatment equipment, and usage history data indicating the use history of the water treatment equipment or the implementation history of the periodic operation. The use history of the water treatment equipment includes water treatment information indicating the type, water quality, water quantity, and temperature of the raw water on loan, or the type, water quality, quantity, and temperature of the treated water.

The types of raw water include, for example, tap water, well water, industrial water, seawater, river water, and the like in water systems, and organic drainage, inorganic drainage, and integrated drainage in drainage and drainage recovery systems. Electronic process drainage, etc. On the other hand, the type of treated water refers to the use of treated water, and examples include food and drinking, pharmaceutical manufacturing, cooling tower makeup water, boiler makeup water, miscellaneous water (general water), and semiconductor manufacturing.

The communication unit 12 communicates with the communication unit 22 of the water treatment facility 2 via the Internet or the like.

The display unit 13 is, for example, a liquid crystal display and displays various screens. The input unit 14 is a keyboard, a mouse, or the like that accepts various operations from an administrator.

The CPU 10 executes the management program stored in the storage unit 11, thereby realizing the loan candidate drawing unit 15, the similarity calculation unit 16, the loan equipment determination unit 17, the inventory information update unit 18, and the periodicity as shown in FIG. 3. The operation plan formulation unit 19 can perform inventory management of water treatment equipment, loan reservations, and plan formulation of regular operations. In addition, although not shown, various operations can be performed by accessing the management device 1 from a terminal installed in a customer's factory or in an inventory base, or an external terminal such as a mobile terminal via the Internet or the like.

The processing of each unit will be described in accordance with the flowchart shown in FIG. 4. The flowchart shown in FIG. 4 is a diagram illustrating a reservation method of the water treatment equipment.

First, the user uses the input unit 14 to input a water treatment specification requested by the customer (step S1). For example, enter water treatment information such as the type, amount, quality of raw water, and type of raw water.

The user inputs a scheduled day to lend the water treatment equipment (step S2). Furthermore, the user sets a limitation condition when searching for a water treatment facility (step S3). The method of setting the limiting conditions will be described in detail using the flowchart shown in FIG. 5. First, the user selects a state of the water treatment equipment to be selected (step S31). Status includes "Lendable", "Not Lendable", "Lendable" is further classified as "Reservable", "Reserved", and "Not Lendable" is classified as "Repairing" or "Lending" ". The current status of all the water treatment equipment held is recorded in the stock information in the storage unit 11.

"Reservable" means that it is currently stored in the stock base S and is in a state where it can be lent immediately. "Reserved" means that it is currently held in the stock base S, but has been reserved. The "reserved" can be negotiated with the user who has made a reservation before and replaced with other water treatment equipment, so it is included in the "can be borrowed".

"Under repair" means that the water treatment unit constituting the water treatment equipment is currently being repaired and is in a state of being unusable. "Lending" means that it has been lent out and is not in stock base S.

When the water treatment equipment whose status is changed to "not loanable" is selected as a lottery object (step S32_Yes), the water treatment equipment that can be loaned out as the lottery object will be selected after the scheduled loan date entered in step S2. Time (step S33_Yes), enter the period from the date when the loan is scheduled to become available (step S34).

The water treatment equipment that becomes lendable after the scheduled loan date refers to, for example, water treatment equipment returned after the scheduled loan date, or water treatment equipment that has been repaired after the scheduled loan date. When "one month" is entered as the period from the scheduled loan date, water treatment equipment returned or repaired within one month from the scheduled loan date is included in the lottery.

After setting the limiting conditions as described above, the loan candidate drawing unit 15 draws candidates for the loaned water treatment equipment (FIG. 4, step S4). The loan candidate drawing unit 15 draws a water treatment device that satisfies the specifications input in step S1 and satisfies the set limit condition as a loan candidate.

For example, the lending candidate lottery unit 15 draws from the water treatment equipment stored in the stock site S and the water treatment equipment currently on loan that will be returned before the scheduled loan date, and the lottery satisfies the input entered in step S1. Water treatment equipment requested by customers.

The similarity calculation unit 16 calculates the water treatment information of the last lending place by using a predetermined calculation formula for each of the selected lending candidates (in the case of lending, the water treatment information of the current lending place) and The similarity of the water treatment information (water treatment specifications) of the current (new) loaned place input in step S1 (step S5).

As for the calculation of the similarity, a well-known method can be used as an index calculation method for the similarity that quantifies the similarity of the elements of two sets (degree of agreement). For example, cosine similarity can be used. , Jaccard's coefficient, dice's coefficient, simpson's coefficient, etc. Here, the cosine similarity using a weighted characteristic vector will be described as an example.

First, from the management items of water treatment equipment (current, voltage, vibration, temperature, pressure, etc.) or water management items (water amount, water temperature, substance concentration, oxidation reduction potential (ORP), pH, etc.) And select n items for calculating the similarity.

Enter the values of each item x _b1 ～ item x _bn of the previous lending place b and each item x _a1 ～ item x _an of the next lending place a, and calculate the respective feature vector x _b and feature vector as follows x _a . The value entered can be the value itself (original data) or a value obtained by subtracting the reference value from the value.

[Mathematical formula 1]

For each selected item, the corresponding weights k ₁ to k _n are input, and the following weight vector k is calculated.

[Mathematical formula 2]

The similarity is calculated from the viewpoint of the entire water treatment facility as follows.

[Mathematical formula 3]

Then, the similarity is calculated for each management item.

The periodical work plan formulation unit 19 predicts, based on the usage history data in the storage unit 11, the period when each periodical work is first performed in a new check-out location for each item of the periodical work (step S6). Regular operations include multiple items such as reverse osmosis (RO) membrane replacement, lining inspection and repair, and drug replenishment.

The periodic work plan formulation unit 19 predicts the next periodic work period based on the interval between the last periodic work performed and the last scheduled work period, that is, the first periodic work performed at the new rental place. . For example, as shown in FIG. 6, when a periodical operation was performed in the period T1, period T2, and period T3 at the last check-out location, the period P1 from period T1 to period T2 is calculated, and the period from period T2 to period T3 is calculated. The average period P (= (P1 + P2) / 2) of the period P2. The period Ts after the calculated period P has elapsed from the period T3 becomes the execution forecast period of the next periodic operation.

When the last lending place is similar to the current (new) lending place and the water treatment information is similar (when the similarity is more than a specified value), the interval between the implementation of regular operations is expected to become the same. Therefore, the execution time Ts of the next periodic operation can be predicted with high accuracy.

The list of loan candidates for the water treatment equipment that has been selected by the loan candidate selection unit 15 is displayed on the display unit 13 together with the calculated similarity. In the list, the candidates can also be displayed in order of the similarity of the viewpoint of the entire water treatment equipment from high to low (comprehensive similarity from high to low). When the user selects a candidate from the list, a screen showing detailed information of the selected water treatment equipment is displayed on the display unit 13.

As shown in FIG. 7, the status, location, period of use, and information of the water treatment unit constituting the water treatment equipment are displayed on the detailed information screen. The location indicates where the water treatment equipment is currently located, and displays the location of the stock base S or the lending location. When the history button 61 is pressed, the past usage history is displayed.

For each constituent unit (each periodic operation), the period of use, the last maintenance day (the day when the periodic operation was last performed), the next maintenance scheduled month (the month when the next periodic operation is performed), and the like are displayed.

When the water treatment facility to be loaned is decided and the reservation button 60 is pressed (step S7), the loan facility determination unit 17 accepts the reservation and switches to the input screen of the water treatment facility's lending place and period. The user uses the input unit 14 to input a lending place or a lending period (a period of use of a customer) (step S8).

The inventory information update unit 18 sets the status to "reserved" for the water treatment equipment that has been reserved, and updates the inventory information (step S9). In this way, a reservation for a water treatment facility is made. In addition, the water amount and water quality information input in step S1 are associated with the water treatment equipment and registered in the use history data.

The stock information update unit 18 updates the status of the stock information whenever the water treatment equipment is sent from the stock base S, or the water treatment equipment is returned from the loan location, or the repair is completed, resulting in a change in status.

In this way, according to this embodiment, it is possible to present the similarity between the water treatment equipment of the loan candidate and the water treatment information of the previous loan location and the water treatment information of the current loan location. The control items of the water treatment equipment in stock are maintained at the setting of the last lending place, and when the similarity is high, there is no need to change the set control items or only a few changes can be made.

By lending water treatment equipment that has been used in a place with a high degree of similarity, the amount of work required to set a control item at a new lending location can be suppressed, and the time required before starting water treatment can be shortened.

In addition, when the similarity of water treatment information between the last borrowed place and the current borrowed place is high, the interval between the implementation of regular operations also becomes the same. Therefore, it is possible to accurately predict when the initial periodic operation will be performed at the new loan location based on the interval between the last periodic operation and the last periodic operation period, and prepare the required parts and medicines first. Wait.

In the above-mentioned embodiment, an example was described in which the execution period of the next periodic operation is predicted based on the execution interval of the periodic operation of the last borrowed place. If the similarity between the information and the water treatment information of the loan site is not high (less than the specified value), you can also refer to the implementation interval of the regular operation of the past loan site with high similarity of the water treatment information. In addition, when the similarity of the water treatment information of the past lending place with the water treatment facility having the same structure is high, the implementation interval of the periodic operation of the lending place can also be referred to.

It is also possible to set a standard implementation interval for periodic operations for each water treatment unit first. When the similarity with the water treatment information of the last borrowed place is not high (less than the specified value), the next implementation interval is predicted based on the standard implementation interval. Period of regular work.

In the above-mentioned embodiment, the periodic operation plan formulation unit 19 may also predict the water treatment equipment that has received the loan reservation based on the execution interval of the periodic operation at the last loan site or the period when the periodic operation was last performed. When the new lending location will be initially scheduled and scheduled.

As the status information in the present invention, at least reservations, reservations, repairs, and lending are exemplified. In addition, items such as outputting procedures, discarding, sending, and inventory confirmation may be added as needed.

In addition, the present invention is not limited to the embodiment itself, and the constituent elements may be modified and embodied in a range not departing from the gist thereof at the implementation stage. In addition, various inventions can be formed by a suitable combination of a plurality of constituent elements disclosed in the embodiments. For example, several constituent elements may be removed from all the constituent elements shown in the embodiment. Furthermore, constituent elements relating to different embodiments may be appropriately combined.

Although the present invention has been described in detail using a specific form, it is clear to those skilled in the art that various changes can be made without departing from the spirit and scope of the present invention.
This application is based on Japanese Patent Application No. 2018-044344 filed on March 12, 2018, and the entire contents thereof are incorporated by reference.

1‧‧‧ management device

2‧‧‧water treatment equipment

10‧‧‧CPU

11‧‧‧Storage Department

12‧‧‧ Ministry of Communications

13‧‧‧Display

14‧‧‧Input Department

15‧‧‧Lending candidate lottery

16‧‧‧Similarity calculation section

17‧‧‧ Lending equipment decision department

18‧‧‧Stock Information Update Department

19‧‧‧Regular operation plan formulation department

20‧‧‧Control Department

21‧‧‧ Surveillance Department

22‧‧‧ Ministry of Communications

23‧‧‧water treatment unit

60‧‧‧Reservation button

61‧‧‧Resume button

F‧‧‧factory

During P1, P2‧‧‧‧

P‧‧‧Average period

S‧‧‧Stock Base

T1, T2, T3, Ts‧‧‧ periods

S1 ～ S9, S31 ～ S34‧‧‧step

FIG. 1 is a schematic diagram showing an example of lending of a water treatment facility.

FIG. 2 is a block diagram of a management system according to the embodiment of the present invention.

FIG. 3 is a functional block diagram implemented by executing a management program.

FIG. 4 is a flowchart illustrating a loan reservation method of a water treatment facility.

FIG. 5 is a flowchart illustrating a method of setting candidate limit conditions for a lending device.

FIG. 6 is a diagram showing the execution time of a periodic operation.

FIG. 7 is a diagram showing an example of a screen showing details of candidates of a loan device.

Claims (5)

A management device for water treatment equipment, comprising: The storage section stores stock information including status information indicating whether the water treatment equipment can be loaned out, and water treatment information including past lending locations of the water treatment equipment and usage history data of the implementation history of the regular operation; The lottery department, based on the inventory information and the water treatment information of the new lending place, draws water treatment equipment as candidates for lending; Lending equipment decision department, accepting lending appointments for water treatment equipment; and The periodic operation plan formulation department predicts the implementation of the periodic operation in the new lending location for the water treatment equipment that is a candidate for lending or has accepted the lending reservation, based on the execution history of the periodic operation in the last lending location. period. The management device of the water treatment equipment according to item 1 of the scope of the patent application, further comprising a similarity calculation unit that calculates the water treatment information of the last lending place and the lending candidate for the lending candidate. The similarity of the water treatment information for the new loan site, and The selected lending candidates are presented together with the similarity. The management device for water treatment equipment according to item 1 or 2 of the scope of application for a patent, wherein the periodic operation plan formulation section predicts a period for performing periodic operations for each water treatment unit used in the water treatment equipment. The management device for a water treatment equipment according to any one of claims 1 to 3 in the scope of the patent application, wherein the periodic operation plan formulation unit is based on the periodic operation for the water treatment equipment whose similarity is less than a prescribed value. The standard implementation interval is estimated at the period when regular operations will be performed at the new lending location. The management device for a water treatment equipment according to any one of claims 1 to 3 in the scope of patent application, wherein the water treatment information includes at least any of the types, quantity, quality, and temperature of raw water and treated water. One.