JP2014124569A - Apparatus for water quality prediction, and method for water quality prediction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for water quality prediction and a method for water quality prediction capable of predicting water quality according to a water treatment facility or the like selected by users.SOLUTION: An apparatus for water quality prediction comprises a water treatment facility database 12 to store facility performance information specifying performance of a water treatment facility for the treatment of water to be treated; a chemical feed model database 13 to store chemical reaction formula information specifying a chemical reaction caused by injecting a chemical agent into water to be treated, a calculation unit 15 of the water to be treated and chemical feed to calculate an injection amount of a chemical agent corresponding to the chemical feed model and water quality after treatment, based on the facility performance information on the water treatment facility selected via an input device 2 and the chemical reaction formula information on a selected chemical feed model; and a display control unit 17 to display raw water information, the facility performance information on the selected water treatment facility, the selected chemical feed model, and calculation results obtained by the calculation unit 15 of the water to be treated and chemical feed at least on a display device 3.

Description

  The present invention relates to a water quality prediction apparatus and a water quality prediction method for predicting water quality after treating water to be treated.

  In recent years, the need for water is increasing due to global climate change and water shortages, and the market is expected to expand. For example, when water to be treated such as seawater is desalinated, a floc containing specific impurities is grown by injecting and stirring chemicals into the water to be treated, and after the floc is removed, the floc is permeated through a reverse osmosis membrane. A desalination system for extracting water (fresh water) is known.

When designing such a desalination system, it is necessary to make it the structure which reduces the turbidity etc. to the predetermined | prescribed allowable range regarding the to-be-processed water after removing the said floc.
For example, in Patent Document 1, the quality of raw water and the injection rate of chemicals are input to a neural network to predict the quality of treated water, and the predicted value is compared with a target value. A chemical injection rate control method for adjusting the injection rate is described.
Patent Document 2 discloses a process control system in which a plurality of variables having a trade-off relationship with respect to process control are adjusted in a framework of constant value control, and a function definition for balancing the trade-off is added to perform process control. Is described.

JP 2002-126721 A JP 2007-249767 A

Meteorological Research Institute Technical Report No.41 2000 pp.5-7

However, although the techniques described in Patent Documents 1 and 2 can be applied to the process of injecting chemicals, for example, a process of filtering impurities (ie, physical filtration) using a filtration membrane such as UF (Ultrafiltration) is performed. The case is not considered.
In addition, the technologies described in Patent Documents 1 and 2 are based on the premise that the processing content when performing the filtering process (or process control) is determined in advance. For example, in Patent Document 2, the dissolved oxygen (DO) concentration and the ammonia concentration are controlled on the premise that the first sedimentation tank, the oxygen-free tank, the aerobic tank, and the final sedimentation tank are sequentially arranged from the upstream side. It has a configuration.

  As described above, in the techniques described in Patent Documents 1 and 2, in order to make the turbidity of the water to be treated within an allowable range, the processing results when a plurality of candidate water treatment facilities are combined are verified in advance. The configuration is not possible.

  Then, this invention makes it a subject to provide the water quality prediction apparatus and water quality prediction method which can predict water quality according to the water treatment equipment etc. which are selected by the user.

  In order to solve the above-mentioned problems, the present invention selects a water treatment facility from a water treatment facility database via an input device, selects a chemical injection model from a chemical injection model database, When raw water information specifying the quality of raw water is input, the chemical injection model based on the equipment performance information of the selected water treatment facility and the chemical reaction formula information of the selected chemical injection model The amount of chemical injection corresponding to the above and the water quality after treatment are calculated.

  ADVANTAGE OF THE INVENTION According to this invention, the water quality prediction apparatus and water quality prediction method which predict water quality according to the water treatment equipment etc. which are selected by the user can be provided.

It is a lineblock diagram of the water quality prediction device concerning a 1st embodiment of the present invention. It is explanatory drawing which shows the structure of the water treatment equipment database with which a water quality prediction apparatus is provided. It is explanatory drawing which shows the structure of the chemical injection model database with which a water quality prediction apparatus is provided. It is explanatory drawing which shows the relationship between a water treatment equipment database and a chemical injection model database. It is a flowchart which shows the flow of the process which an input information identification part performs. It is an example of a display screen when prompting the user to input raw water information or the like. It is explanatory drawing which shows the example of the raw | natural water information input via an input device. It is a flowchart which shows the flow of the process which an information retrieval part performs. When MMF is selected via an input device, it is an example of a display screen prompting further selection of a specific water treatment facility. It is explanatory drawing which shows the performance of the water treatment facility selected via the input device in the water treatment facility database. It is an example of a display screen when MMF of Name: 1 is selected via the input device. It is a flowchart which shows the flow of the process which a process water and chemical | medical agent calculation part performs. It is an example of a display screen after a calculation process is performed by the process water and chemical injection calculation part. It is explanatory drawing when water treatment equipment etc. are added to the back | latter stage side sequentially by operation via an input device. It is a block diagram of the water quality prediction apparatus which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the structure of the water treatment equipment database with which a water quality prediction apparatus is provided. It is explanatory drawing which shows the structure of the chemical injection model database with which a water quality prediction apparatus is provided. It is an example of a display screen at the time of displaying the calculation result etc. of the water quality prediction device concerning this embodiment. It is an example of a display screen at the time of displaying the calculation result etc. of the water quality prediction device concerning a 3rd embodiment.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, “treated water” means water to be treated by a water treatment facility or the like. In addition, “raw water” means water in a state where treatment by a water treatment facility (for example, filtration treatment) or chemical injection treatment for injecting chemicals is not performed (that is, an initial state of water to be treated). . The “target water information” is information indicating an allowable range of the quality of the water to be treated that is finally obtained by performing one or a plurality of treatments on the raw water.

<< First Embodiment >>
<Configuration of water quality prediction device>
FIG. 1 is a configuration diagram of a water quality prediction apparatus according to the first embodiment. This embodiment demonstrates the case where the water quality prediction apparatus 1 is made to predict the water quality after performing the raw water filtration process etc. in one or several steps.

For example, the water quality prediction apparatus 1 determines the quality of water to be treated obtained as a result of treatment using a water treatment facility and a chemical injection model selected by a user in a design stage of a water treatment system for treating raw water such as seawater. It is a device for calculating (predicting).
The water quality prediction apparatus 1 includes electronic circuits such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), and various interfaces, and is stored therein. Various functions are performed by operating according to the program.

  The water quality prediction apparatus 1 includes an input information identifying unit 11, a water treatment facility database 12 (described as “water treatment facility DB” in FIG. 1 and the like), and a chemical injection model database 13 (in FIG. DB ”), an information search unit 14, a treated water / medical injection calculation unit 15, a temporary storage unit 16, and a display control unit 17.

(Input information identification part)
The input information identification unit 11 has a function of identifying information input via the input device 2 by a user operation and storing the information in the temporary storage unit 16 corresponding to the identification result. The input device 2 shown in FIG. 1 is, for example, a keyboard (not shown) or a mouse (not shown) connected to the water quality prediction device 1, and receives input operations and selection operations by the user to identify input information. The function of outputting to the unit 11 is provided.

(Water treatment equipment database)
FIG. 2 is an explanatory diagram illustrating a configuration of a water treatment facility database included in the water quality prediction apparatus.
In the water treatment facility database 12, facility performance information for specifying the performance of the water treatment facility for treating the water to be treated is stored in association with the identification information of each water treatment facility.

  As shown in FIG. 2, information about a plurality of water treatment facilities such as MMF (Multimedia Filtration), UF (Ultrafiltration), and DAF (Dissolved Air Floatation) is stored in the water treatment facility database 12. Although details will be described later, the user selects one or more water treatment facilities from among the MMF, UF, DAF,... Shown in FIG. (Including the case where the same type of water treatment facility is selected a plurality of times).

Further, for example, even when MMF is used as a water treatment facility, the facility performance (such as the size of impurities that can be removed) varies depending on the manufacturer of the manufacturer and the model of MMF. As shown in FIG. 2, for example, the equipment performance information of the MMF whose manufacturer name and model is Name: 1 includes flow rate: D (1, 1), temperature change: D (1, 2), pH: D (1 , 3), SDI (Silt Density Index): D (1, 4), Turb. (Turbidity): expressed as D (1,5),.
Note that “D” shown in FIG. 2 means a specific numerical value stored in the water treatment facility database 12. Further, (1, 1), (1, 2), etc. described next to D schematically represent addresses where the value D is stored in the water treatment facility database 12.

In the example shown in FIG. 2, information on the MMF whose manufacturer name and model are Name: 1 to n is stored in the water treatment facility database 12 in advance.
As for the UF and DAF water treatment facilities, as in the case of the MMF described above, facility performance information is stored in advance corresponding to each manufacturer name and model.

(Medication model database)
FIG. 3 is an explanatory diagram illustrating a configuration of a chemical injection model database included in the water quality prediction apparatus.
In the chemical injection model database 13, chemical reaction formula information for specifying a chemical reaction that occurs by injecting chemicals into the water to be treated is stored in association with identification information of each chemical as a chemical injection model.
Incidentally, the above-mentioned “chemical reaction formula information” is generated as a result of a chemical reaction with a chemical to be injected into the water to be treated, a substance (impurities etc.) included in the water to be treated and causing a chemical reaction with the chemical. Information that can specify the type and molar ratio of the substance is not limited to the chemical reaction formula itself.

Further, in the chemical injection model database 13, each chemical injection model is classified and stored for each purpose of the chemical injection processing (pH adjustment, dechlorination, sterilization,...).
For example, when performing a pH adjustment chemical injection process, the user can select one of the chemical injection models A, B, and C via the input device 2. The same applies when the purpose of the chemical injection treatment is dechlorination, sterilization or the like. Note that FIG. 3 is an example, and the number of chemical injection models corresponding to the purpose of chemical injection processing is not limited to three.

(Relationship between water treatment facility DB and chemical injection model DB)
FIG. 4 is an explanatory diagram showing the relationship between the water treatment facility database and the chemical injection model database. MMF, UF, DAF,... Shown in FIG. 4 correspond to the type of each water treatment facility stored in the water treatment facility database 12 (see FIG. 2), and the manufacturer name and model name: 1 to n. Corresponds to the manufacturer name of the MMF stored in the water treatment facility database 12.

For example, the chemical injection process required when performing filtration using MMF may differ depending on the manufacturer and model of the MMF. For example, when MMF of Name: 1 is used, pH adjustment is necessary (◯ mark), but dechlorination and sterilization are unnecessary (x mark). Moreover, when using MMF of Name: 2, dechlorination is necessary, but pH adjustment and sterilization are unnecessary.
There may be a water treatment facility that does not require any chemical injection treatment (for example, sand filtration without chemical injection treatment). In this case, information that there is no necessary chemical injection processing is stored in the chemical injection model database 13.

These pieces of information are stored in the water treatment facility database 12 in association with the purpose of the chemical injection process (for example, pH adjustment), and the chemical injection model in the chemical injection model database 13 (for example, chemicals A to C: see FIG. 3). It is tied with.
That is, in the water treatment facility database 12 (see FIG. 1), the types of chemical injection processing required when performing processing by the water treatment facility, and the identification information of the chemical injection model that can be selected in the types are included. It is stored in association with the identification information of the water treatment facility.
Although details will be described later, when a predetermined water treatment facility (for example, MMF of Name: 1) is selected via the input device 2, the water quality prediction device 1 is required to perform a chemical injection process ( pH adjustment) is specified, and selectable drug injection models (chemical injection models A to C: see FIG. 3) are displayed on the display device 3.

(Information Search Department)
Returning again to FIG. 1, the description will be continued. When predetermined information is input via the input device 2, the information search unit 14 searches the water treatment facility database 12 and the chemical injection model database 13 according to the information and stores the search results in the temporary storage unit 16. Has the function of storing.
For example, when the MMF of Name: 1 (see FIG. 2) is selected via the input device 2, the information search unit 14 acquires the facility performance information of Name: 1 from the water treatment facility database 12 (flow rate, etc .: see FIG. 2). And the search result is stored in the temporary storage unit 16.
Details of processing performed by the information search unit 14 will be described later.

(Treatment water / chemical injection calculator)
The treated water / chemical injection calculating unit 15, based on the equipment performance information of the water treatment facility selected via the input device 2 and the chemical reaction formula information of the selected chemical injection model, It has a function to calculate the water quality after treatment.
For example, water treatment is sequentially performed using water treatment facilities α, β, γ (not shown). In this case, the treated water / chemical injection calculating unit 15 calculates the water quality after treatment in each of the water treatment facilities α, β, γ (that is, water quality (α), water quality (α + β), and water quality (α + β + γ)). It has become.
The details of the process performed by the treated water / medicine calculating unit 15 will be described later.

(Temporary storage)
The temporary storage unit 16 temporarily stores information input from the input information identification unit 11, the information search unit 14, and the treated water / medical injection calculation unit 15.
That is, the temporary storage unit 16 stores raw water quality information, water treatment facility selection information, chemical injection model selection information, and target water information input from the input information identification unit 11. The target water information described above is information indicating the allowable range of water quality after treatment by one or a plurality of water treatment facilities (and chemical injection models).

(Display control unit)
When a predetermined display command is input from the input information identification unit 11 or the information search unit 14, the display control unit 17 reads information corresponding to the display command from the temporary storage unit 16 and converts the information into image information. 3 is displayed.

  That is, the display control unit 17 includes the raw water information and the target water information input via the input device 2, the facility performance information of the water treatment facility selected via the input device 2, and the selected chemical injection model. In addition, it has a function of displaying at least the display device 3 (such as a monitor) with the calculation result by the treated water / chemical injection calculating unit 15.

<Treatment of water quality prediction device>
Next, the process performed by the input information identification unit 11 (see FIG. 5), the process performed by the information search unit 14 (see FIG. 8), and the process performed by the treated water / medical injection calculation unit 15 (see FIG. 12) will be described in order. To do.

(Processing of the input information identification unit)
FIG. 5 is a flowchart showing a flow of processing executed by the input information identification unit. It is assumed that the water quality prediction device 1 displays the screen shown in FIG. 6 on the display device 3 in response to an operation via the input device 2 at the time of START shown in FIG.
The raw water information F shown in FIG. 6 displays water quality information of raw water that has not been subjected to chemical injection processing or water treatment (for example, filtration). However, no numerical value is input at the time of START in FIG. 6, and it is in a blank state (the same applies to all other frames).

  Further, the water treatment facility selection unit G1, the treated water quality information H1, the facility performance I1, and the chemical injection model J1 shown in FIG. 6 correspond to one set of water treatment facility and chemical injection model. Each time a water treatment facility or the like is added via the input device 2, each piece of information is displayed in the order of symbols P1, P2,..., Pk (that is, from the upstream side toward the downstream side).

The water treatment facility selection unit G1 is a place where a water treatment facility selection operation is performed via the input device 2 (see FIG. 1). The water treatment facility selection unit G1 includes a first selection unit G11 for selecting a type of water treatment facility (for example, MMF) via the input device 2, and a water treatment facility via the input device 2. A second selection unit G12 for selecting a manufacturer name and model is displayed.
The facility performance information of the water treatment facility selected via the input device 2 is displayed in the facility performance I1.

The chemical injection model J1 displays the type of chemical injection model selected via the input device 2 and the required chemical injection amount.
The treated water quality information H1 displays water quality information of water to be treated that is predicted as a treatment result using the water treatment facility and the chemical injection model selected by the user.
The same applies to the places indicated by reference signs P2,...
In the target water information L, information indicating the allowable range of the quality of the water to be treated finally obtained by the treatment of the water treatment facility is displayed.

Returning to FIG. 5 again, the description will be continued. In step S <b> 101, the input information identification unit 11 determines whether information is input from the input device 2. When some information is input from the input device 2 (S101 → Yes), the process of the input information identification unit 11 proceeds to step S102. On the other hand, when information is not input from the input device 2 (S101 → No), the input information identification unit 11 repeats the process of step S101.
In step S102, the input information identification unit 11 determines whether the information input from the input device 2 is information on water quality (water quality information). When the information input from the input device 2 is water quality information (S102 → Yes), the process of the input information identification unit 11 proceeds to step S103. On the other hand, when the information input from the input device 2 is not water quality information (S102 → No), the process of the input information identification unit 11 proceeds to step S108.

In step S103, the input information identification unit 11 determines whether the information input from the input device 2 is information indicating the quality of raw water (raw water information). When the information input from the input device 2 is raw water information (S103 → Yes), the input information identification unit 11 stores the information in the temporary storage unit 16 as raw water information (S104), and the address etc. is an information search unit. 14 and the display control unit 17 (S105).
The raw water information described above includes raw water flow rate, temperature, pH, SDI (Silt Density Index), Turb. (Turbidity), TSS (Total Suspended Solids), TOC (Total Organic Carbon), COD (Chemical Oxygen Demand), and the like. These pieces of information may be data obtained by conducting a sample survey of raw water that is actually to be taken, or may be arbitrary data described in literatures. The raw water information input via the input device 2 is displayed by the display control unit 17 in a frame indicated by reference numeral F in FIG. Incidentally, the raw water information is used in a calculation process executed by the treated water / chemical injection calculating unit 15 described later.

When the information input from the input device 2 is not raw water information in step S103 of FIG. 5 (S103 → No), the input information identification unit 11 stores the target water information in the temporary storage unit 16 (S106), its address, etc. Is displayed to the display control unit 17 (S107). The target water information input via the input device 2 is displayed by the display control unit 17 in a frame indicated by a symbol L in FIG.
Incidentally, in the present embodiment, the target water information is a reference when the user who views the screen of the display device 3 selects a water treatment facility or the like, but is used for calculation processing by the treated water / medical injection calculation unit 15. Absent.

When the information input from the input device 2 in step S102 is not water quality information (S102 → No), in step S108, the input information identification unit 11 determines whether the information is water treatment facility information. Here, the water treatment facility information is the selection result of the water treatment facility (MMF, UF, DAF, etc .: see FIG. 2) via the input device 2, and the selection result of the manufacturer name and model (Name: 1 to n). And.
When the information input from the input device 2 is water treatment facility information (S108 → Yes), the input information identification unit 11 stores the information in the temporary storage unit 16 as water treatment facility information (S109), and the address thereof. Is notified to the information search unit 14 and the display control unit 17 (S105). Incidentally, the water treatment facility information is displayed as a selection result in the water treatment facility selection unit G1 (see FIG. 9), and is used for the processing of the information search unit 14 described later.

When the information input from the input device 2 is not water treatment facility information (S108 → No), the input information identification unit 11 stores the information in the temporary storage unit 16 as chemical injection model information (S110), and the address and the like. The information search unit 14 and the display control unit 17 are notified (S105). Here, the chemical injection model information means a selection result of a chemical injection model selected via the input device 2 (for example, chemical injection model A: see FIG. 3). The medicinal injection model information is displayed in a frame indicated by a symbol J1 shown in FIG. 9 and used for processing of the information search unit 14 described later.
The input information identification unit 11 sequentially executes the processing shown in FIG. 5 each time information is input from the input device 2.

(Processing of the information search unit)
FIG. 8 is a flowchart showing the flow of processing executed by the information search unit. It is assumed that raw water information and target water information are input via the input device 2 and displayed on the display device 3 at the time of START in FIG. 8 (see symbols F and L in FIG. 9).
In step S <b> 201, the information search unit 14 determines whether there is a notification of selection of the water treatment facility from the input information identification unit 11. Here, the notification of the selection of the water treatment facility includes the address of the temporary storage unit 16 in which information on the selected water treatment facility is stored. When there is a notification of selection of the water treatment facility from the input information identification unit 11 (S201 → Yes), the processing of the information search unit 14 proceeds to step S202.

  In the example shown in FIG. 9, MMF is selected as the water treatment facility from the pull-down menu indicated by reference numeral G11, and Name: 1 is selected as the manufacturer name and model from the pull-down menu indicated by reference numeral G12.

When there is no notification of selection of the water treatment facility from the input information identification unit 11 (S201 → No), the information search unit 14 repeats the process of step S201.
In step S202, the information search unit 14 searches for facility performance information of the water treatment facility selected in step S201. That is, the information search unit 14 searches the water treatment facility database 12 and acquires the facility performance information of the water treatment facility selected via the input device 2.

For example, when the MMF of Name: 1 is selected as the water treatment facility, the information search unit 14 uses the facility performance information corresponding to the water treatment facility (each data within the bold line shown in FIG. 10) as the water treatment facility. Obtained from the database 12.
In step S <b> 203, the information search unit 14 stores the searched facility performance information in the temporary storage unit 16.

In step S <b> 204, the information search unit 14 searches for the type (purpose) of the chemical injection process required for the water treatment facility selected via the input device 2. For example, when MMF of Name: 1 is used, pH adjustment is required (see FIG. 4).
In step S <b> 205, the information search unit 14 acquires from the chemical injection model database 13 a chemical injection model that can be selected when performing the chemical injection processing searched in step S <b> 204, and stores it in the temporary storage unit 16. For example, when pH adjustment is necessary, one of the three chemical injection models A, B, and C (see FIG. 3) can be selected via the input device 2.

  In step S <b> 206, the information search unit 14 notifies the display control unit 17 that the identification information of the water treatment facility selected via the input device 2 and the selectable chemical injection model is stored in the temporary storage unit 16. When the notification is received, the display control unit 17 causes the display device 3 to display the image illustrated in FIG. That is, when the user selects MMF of Name: 1, the equipment performance information of the water treatment facility is displayed in the frame indicated by reference numeral I1, and the drug injection models A and B that can be selected via the input device 2 , C are displayed in the frame of the symbol J1.

  As described above, the type (purpose) of the necessary chemical injection process is preset in each water treatment apparatus (see FIG. 4). Therefore, when a water treatment facility is selected via the input device 2, the type (one or more) of the chemical injection processing required for the water treatment facility is determined, and corresponding to each type of chemical injection processing A selectable medicated model is identified (see FIG. 3).

  In addition, when a plurality of chemical injection processes (for example, pH adjustment and dechlorination) are necessary in the selected water treatment facility, for example, a plurality of pull-down menus are displayed. Thereby, the user can select the chemical injection model used for each chemical injection processing via the input device 2.

In step S <b> 207, the information search unit 14 determines whether or not a drug injection model has been selected via the input device 2. When the medicinal injection model is selected via the input device 2 (S207 → Yes), the process of the information search unit 14 proceeds to step S208. On the other hand, when the medicinal model is not selected via the input device 2 (S207 → No), the information search unit 14 repeats the process of step S207.
In step S208, the information search unit 14 searches for chemical reaction formula information corresponding to the chemical injection model selected in step S207. For example, when the medicinal model A (medicine A) is selected from the medicinal models A, B, and C shown in FIG. 11, the information search unit 14 searches the medicinal model database 13 for the chemistry of the medicinal model A. Get reaction formula information.

In step S209, the information search unit 14 stores the chemical reaction formula information acquired in step S208 in the temporary storage unit 16.
In step S <b> 210, the information search unit 14 notifies the treated water / chemical injection calculation unit 15 that the chemical reaction formula information has been stored in the temporary storage unit 16 and the address.
The information search unit 14 sequentially executes the processing shown in FIG. 8 every time a water treatment facility or the like is added to the rear side.

(Treatment of treated water / chemical injection calculation unit)
FIG. 12 is a flowchart showing the flow of processing executed by the treated water / chemical injection calculating unit.
In step S <b> 301, the treated water / chemical injection calculating unit 15 determines whether or not there is a notification of step S <b> 210 (see FIG. 8) from the information search unit 14. If there is a notification from the information search unit 14 (S301 → Yes), the process of the treated water / medicine calculating unit 15 proceeds to step S302. On the other hand, when there is no notification from the information search part 14 (S301-> No), the process water and chemical injection calculation part 15 repeats the process of step S301.

  In step S <b> 302, the treated water / chemical injection calculating unit 15 calculates the water quality after treatment and the required chemical injection amount. Here, “water quality after treatment” means water quality after treatment by the water treatment facility selected in step S109 of FIG. In addition, the above-mentioned “necessary amount of chemical injection” is the amount (volume) of chemicals required to satisfy the performance of the water treatment facility (see FIG. 10) with the chemical injection model selected in step S110 of FIG. ).

The treated water / chemical injection calculating unit 15 calculates the quality of the water after treatment by the water treatment facility and the chemical injection model based on the performance of the water treatment facility selected in step S109 of FIG. 5 (see FIG. 10).
For example, the treated water / chemical injection calculating unit 15 outputs the facility performance information stored in the water treatment facility database 12 as it is for the temperature and SDI of the treated water quality.

In addition, the treated water / chemical injection calculating unit 15 includes TSS, TOC, COD, and Turb. Is calculated by (Equation 1) shown below using the water quality information of the treated water that has been processed up to the previous stage and the equipment performance information stored in the water treatment equipment database 12. Here, P is the water quality after treatment (for example, the value of TSS), Q is the water quality before treatment (for example, the value of TSS), and R is facility performance information of the water treatment facility (for example, decrease in TSS). Rate [%]).
P = Q × {(100−R) / 100} (Formula 1)

Although not exemplified in the present embodiment, VSS (Volatile suspended solids), Algae, Micro organizm, Oil & Grease, Fe2 + / 3 +, Mn, Al2 + / 3 +, etc. are also used by using the above (formula 1). It can be calculated by a similar method.
Further, when calculating the value of HCO ₃ , when adjusting the pH in the water treatment facility, the value of HCO ₃ after treatment is calculated from the target pH, the value of HCO ₃ of the water to be treated and the value of pH. Is output. The calculation uses, for example, the method of Non-Patent Document 1 described above. When pH is not adjusted, HCO ₃ contained in the water to be treated is output as it is as a result of the previous treatment.

Further, the treated water / chemical injection calculating unit 15 selects the chemical injection amount (injection amount per unit time) necessary for satisfying the equipment performance of the selected water treatment facility via the input device 2. Calculated based on chemical reaction formula information of the model. Incidentally, the above-described chemical reaction formula information is retrieved from the chemical injection model database 13 by the information retrieval unit 14.
As an example, a formula for calculating the injection amount of the dechlorinating agent is shown in the following (Formula 2).
(Necessary chemical injection amount) = (Flow rate of treated water) × (Concentration of treated material in treated water) / (Molecular weight of treated material) × (Molecular weight of selected dechlorinating agent) (Formula 2)

Next, in step S303, the treated water / chemical injection calculating unit 15 stores the calculation result of step S302 in the temporary storage unit 16 (see FIG. 1).
In step S304, the treated water / chemical injection calculating unit 15 notifies the display control unit 17 that the processed water quality and the required chemical injection amount have been calculated, and the address at which the data is stored. Upon receiving the notification, the display control unit 17 reads the calculation result by the treated water / chemical injection calculation unit 15 from the temporary storage unit 16, converts it into image information, and causes the display device 3 to display it. Then, for example, as shown in FIG. 13, the water quality after treatment using MMF (see reference G11) of Name: 1 (see reference G12) and chemical A (see reference J1) corresponding to the chemical injection model A is used. Is displayed in a frame indicated by reference numeral H1.
Further, the display control unit 17 displays the injection amount (50 [m ³ / d]) of the medicine A necessary for the MMF of Name: 1 in the frame indicated by the symbol J1.

  The treated water / medical injection calculating unit 15 sequentially executes the process shown in FIG. 12 each time a subsequent (that is, downstream) water treatment facility is added by an operation via the input device 2. For example, as shown in FIG. 14, when a water treatment facility (name: UF of 5) is added within the frame indicated by the symbol G <b> 2 via the input device 2, the treated water / chemical injection calculating unit 15 Water quality (water quality displayed in the frame H1) after treatment by the water treatment equipment (Name: 1 MMF: see G1) before the treatment equipment is treated water of the added water treatment equipment. Set.

  In this way, when the water quality prediction device 1 predicts the water quality after treatment using the water treatment facility or the like, each time the water treatment facility or the like is added via the input device 2, the water treatment facility after the addition is added. The water quality is sequentially calculated and displayed on the display device 3. Then, the user looks at the water quality after the treatment displayed on the display device 3 and compares it with the target water information (see symbol L in FIG. 14) to operate the input device 2 to add water treatment equipment and the like as appropriate. I will do it.

  Incidentally, when a water treatment facility that does not require chemical injection is selected, the display control unit 17 performs the chemical injection process within a frame for displaying the chemical injection model information (for example, within the frame indicated by J1 in FIG. 14). Display that it is unnecessary. Even in this case, the water quality after the treatment can be calculated using the same method as in the case of performing the above-described chemical injection treatment.

<Effect>
According to the water quality prediction apparatus 1 according to the present embodiment, for example, when designing pretreatment equipment (water treatment equipment and chemical injection equipment) when desalting raw water, raw water information is input via the input device 2. By selecting a water treatment facility or the like, the water quality after treatment can be predicted.
In the techniques described in Patent Documents 1 and 2, there is a restriction that the amount of chemical injection or the like can be adjusted for the first time under the condition that the configuration of the water treatment facility or the like is set in advance. On the other hand, according to the water quality prediction apparatus 1 according to the present embodiment, the type of water treatment facility (for example, MMF) selected via the input device 2, and the manufacturer name and model (for example, Name :) of the manufacturer. The water quality after treatment can be predicted according to 1). That is, it is possible to respond flexibly to changes in the type, number, order, etc. of water treatment facilities.

  In addition, in the techniques described in Patent Documents 1 and 2 described above, although the injection amount at the time of performing the chemical injection process can be adjusted, the case where a filtration process without chemical change is performed is not considered. According to the water quality prediction apparatus 1 according to the present embodiment, the water quality after treatment can be appropriately and easily predicted even when a filtration process without chemical change is performed.

  In addition, when a water treatment facility is selected via the input device 2, the water quality prediction device 1 according to the present embodiment specifies a chemical injection process (for example, pH adjustment) necessary for the water treatment facility, and this A chemical injection model (for example, chemical injection models A, B, and C) that can be used for the chemical injection processing is displayed on the display device 3. Thus, by displaying a plurality of medicinal injection models, it is possible to reduce the user's research burden and improve usability.

In addition, the water quality prediction device 1 performs a plurality of stages of processing including the water treatment facility each time a water treatment facility (and corresponding chemical injection facility) is added to the rear stage via the input device 2. Predict water quality after being made.
Then, the user can consider adding, changing, or deleting the water treatment facility by sequentially comparing the displayed water quality after treatment with the target water quality. In other words, when multiple water treatment facilities are selected, by predicting and displaying the water quality in the middle of the process, it is easy for the user to decide the policy for selecting the water treatment facility, and the burden on the user is reduced. Can do.

<< Second Embodiment >>
The water quality prediction apparatus 1A (see FIG. 15) according to the second embodiment adds a cost calculation unit 18 as compared with the first embodiment, and data relating to equipment costs is stored in the water treatment equipment database 12A and the chemical injection model database 13A. The other points are the same as in the first embodiment, except that they are stored. Therefore, the said different part is demonstrated and description is abbreviate | omitted about the part which overlaps with 1st Embodiment.
FIG. 15 is a configuration diagram of a water quality prediction apparatus according to the second embodiment. The cost calculation unit 18 illustrated in FIG. 15 has a function of calculating the cost required for the water treatment facility selected by the user and the medicine corresponding to the chemical injection model.

  As shown in FIG. 16, in the water treatment facility database 12A, the type (for example, MMF) of each water treatment facility, the manufacturer name and model (for example, Name: 1), the unit price of each water treatment facility, The incidental equipment unit price is stored in association with the identification information of the water treatment equipment. For example, the equipment unit price D (1, m) shown in FIG. 16 is the unit price of the MMF of Name: 1, and the incidental equipment unit price D (1, m + 1) is the equipment associated with the processing of the MMF of Name: 1. (For example, tank, pump).

  In addition, as shown in FIG. 17, in the chemical injection model database 13A, information on chemical reaction formulas, chemical unit prices, and physical properties of chemicals correspond to each chemical injection model as identification information of the chemical injection model. Stored in association. Here, the chemical unit price is a price per unit volume of the chemical used in the chemical injection model. The physical properties of chemicals include the concentration and specific gravity of chemicals used in the chemical injection model.

  The cost calculation unit 18 (see FIG. 15) executes the calculation process by the treated water / chemical injection calculation unit 15 and then executes the unit price and the incidental unit price of the water treatment facility selected via the input device 2 (FIG. 16). And the medicine unit price corresponding to the medicinal injection model selected via the input device 2 are read from the temporary storage unit 16. The information is acquired from the water treatment facility database 12 </ b> A and the chemical injection model database 13 </ b> A by the information search unit 14 and stored in the temporary storage unit 16.

Next, the cost calculation unit 18 includes the unit price of the water treatment facility selected via the input device 2, the price per unit volume of the chemical corresponding to the chemical injection model selected via the input device 2, The facility cost is calculated based on the amount of medicine injected calculated by the treated water / chemical injection calculating unit 15.
That is, the cost calculation unit 18 calculates the product of the chemical injection amount (volume of chemical to be added) calculated by the treated water / chemical injection calculation unit 15 and the above-mentioned chemical unit price, and temporarily stores the chemical cost as the chemical cost. To store.

Furthermore, the cost calculation unit 18 calculates the sum of the above-described equipment unit price, incidental equipment unit price, and chemical cost as the equipment cost. The above-mentioned equipment cost (CAPEX: Capital Expenditure) includes equipment cost, construction cost, and design cost.
Furthermore, the cost calculation unit 18 calculates the total of the facility costs of a plurality of water treatment facilities and the like and stores them in the temporary storage unit 16 each time a water treatment facility or the like is added, changed, or deleted via the input device 2. .

FIG. 18 is an example of a display screen when displaying a calculation result of the water quality prediction apparatus according to the present embodiment.
The raw water information F, target water information L, water treatment equipment selection units G1 to Gk, water quality information H1 to Hk after treatment, equipment performances I1 to Ik, and chemical injection models J1 to Jk shown in FIG. This is the same as that described in. In FIG. 18, the numerical values in each frame are omitted (the same applies to FIG. 19).

  By the way, the equipment cost in the case of using the water treatment facility (in the frame of the reference G2) and the chemical injection model (in the frame of the J2) selected via the input device 2 in the frame of the reference M2. Is displayed (not the sum of the equipment cost M1 corresponding to the symbol G1).

  In addition, in the frame of the symbol N, the total of equipment costs of one or a plurality of water treatment equipment selected by the user is displayed. The total facility cost is updated each time a water treatment facility or the like is added, changed, or deleted via the input device 2.

<Effect>
According to the water quality prediction apparatus 1 </ b> A according to the present embodiment, the equipment cost required for the water treatment equipment selected via the input device 2 can be calculated and displayed on the display device 3. The user can appropriately select a water treatment facility or the like while viewing the facility cost displayed on the display device 3 and the total thereof (that is, considering the facility cost: CAPEX).

Further, according to the water quality prediction apparatus 1A according to the present embodiment, the equipment performance, the chemical injection model, the treated water quality information, and the equipment cost are associated with each other and displayed on the display device 3 (see FIG. 18). . Therefore, the user can proceed with the selection operation while comprehensively considering not only the facility cost but also the performance of the water treatment facility and the like.
Thus, 1 A of water quality prediction apparatuses can improve a user's convenience by making the display apparatus 3 display various information including equipment cost.

«Third embodiment»
The water quality prediction apparatus 1B (not shown) according to the third embodiment differs from the first embodiment in the processing contents of the input information identification unit 11, the treated water / medical injection calculation unit 15, and the display control unit 17. However, the configuration of the water quality prediction apparatus 1B is the same as that of the first embodiment (see FIG. 1). Therefore, the said different part is demonstrated and description is abbreviate | omitted about the part which overlaps with 1st Embodiment.
The display control unit 17 displays the water quality fluctuation input unit P and the display water quality selection unit Q shown in FIG. 19 before the raw water information and the like are input.
The water quality fluctuation input unit P is a location that accepts input of water quality fluctuation information (water quality fluctuation span P1, water quality fluctuation width P2, and water intake fluctuation P3) in response to an operation via the input device 2.

The water quality fluctuation span P1 (fluctuation time) means a period when the water quality of the raw water fluctuates. The water quality fluctuation width P2 (fluctuation width) means the fluctuation width of the raw water (temperature, pH, etc.) within the water quality fluctuation span P1. The intake water amount fluctuation P3 means a fluctuation cycle and a fluctuation width of the flow rate when raw water is taken. The water quality fluctuation span P1, the water quality fluctuation width P2, and the water intake amount fluctuation P3 can be known by a preliminary survey or the like.
When the raw water water quality fluctuation span P1 is input via the input device 2, the input information identification unit 11 stores the water quality fluctuation span P1 in the temporary storage unit 16, and the address or the like is treated water / chemical injection calculation unit. 15 is notified. The same applies to the case where the water quality fluctuation width P2 or the water intake fluctuation P3 is input via the input device 2.

The display water quality selection unit Q is a part that selects a specific item (for example, COD) from the water quality of the raw water described with reference to FIG.
When a water treatment facility or the like is selected via the input device 2, the treated water / chemical injection calculating unit 15 sequentially calculates the quality of the water to be treated every predetermined time (for example, 1 min) and stores it in the temporary storage unit 16. Store. The display control unit 17 reads the above-described water quality from the temporary storage unit 16 and displays changes over time of each item of water quality as a graph R. In the example shown in FIG. 19 (see reference numerals R1 to R3), a case is shown in which changes with time regarding three items (for example, temperature, pH, and COD) are displayed.

  In addition, the display control unit 17 performs processing on the raw water and the subsequent stage (downstream side) sequentially from the first stage for the item (for example, COD) selected in the display water quality selection unit Q via the input device 2. The value (for example, temporal average value) in each stage of the water to be treated is displayed as a bar graph.

<Effect>
According to the water quality prediction apparatus 1B according to the present embodiment, depending on the water quality fluctuation input via the input device 2, changes in each item of water quality over time, and values at each processing stage relating to specific items of water quality Can be displayed on the display device 3. Thereby, the user can grasp | ascertain the information regarding a water quality change at a glance.

  In addition, such a change in the quality of the water to be treated is influenced not only by the quality of the raw water but also by the performance of the water treatment facility. The user can select a water treatment facility or the like by considering the water quality variation or the like by viewing the graph shown in FIG.

≪Modification≫
As mentioned above, although each embodiment demonstrated water quality prediction apparatus 1,1A, 1B which concerns on this invention, this invention is not limited to these description, A various change can be performed.
For example, in each of the above-described embodiments, the case where a filtration device such as UF is used as the water treatment facility has been described. For example, the present invention can be applied to various types of water treatment, such as neutralization treatment performed after killing microorganisms contained in water to be treated with hypochlorous acid.

Moreover, although each said embodiment demonstrated the case where the display control part 17 displayed the target water information on the display apparatus 3, it is not restricted to this. That is, display of target water information may be omitted.
Moreover, when a chemical injection model is selected via the input device 2, the display control unit 17 may display the physical properties of the chemical injection model from the chemical injection model database 13 (or the temporary storage unit 16) on the display device. Good.

In the second embodiment, the cost calculation unit 18 may calculate the cost required for the medicine using the physical properties (concentration, specific gravity, etc.) of the medicine selected via the input device 2.
Moreover, although 2nd Embodiment demonstrated the case where the cost including incidental equipment required when performing a water treatment as equipment cost was demonstrated, it is not restricted to this. That is, the cost required for incidental facilities may be omitted.

Moreover, although 2nd Embodiment demonstrated the case where an installation cost (CAPEX) was calculated, it is not restricted to this. For example, the operating cost (OPEX: Operating Expense) of the water treatment facility or the like may be calculated and displayed on the display device 3. Incidentally, the operating cost is the cost required for operating power of equipment, equipment maintenance costs, consumables, and the like.
In the third embodiment, the display control unit 17 causes the display device 2 to display the calculation result regarding the water quality fluctuation based on the water quality fluctuation span P1, the water quality fluctuation width P2, and the water intake amount fluctuation P3 as image information. Although the case has been described, the present invention is not limited to this. For example, the treated water / chemical injection calculating unit 15 may execute a calculation related to the water quality fluctuation based on the water quality fluctuation span P1 and the water quality fluctuation width P2 (that is, without using the water intake fluctuation P3).

  Moreover, each said embodiment can be combined suitably. For example, the second embodiment and the third embodiment may be combined, and information relating to the equipment cost and information relating to water quality fluctuation (graph) may be displayed on the display device 3.

1, 1A, 1B Water quality prediction device 11 Input information identification unit 12, 12A Water treatment facility database 13, 13A Chemical injection model database 14 Information retrieval unit 15 Processed water / chemical injection calculation unit 16 Temporary storage unit 17 Display control unit 18 Cost calculation Part 2 Input device 3 Display device

Claims (6)

A water treatment facility database for storing facility performance information for identifying the performance of the water treatment facility for treating the water to be treated, in association with the identification information of each water treatment facility;
A chemical injection model database that stores chemical reaction formula information that identifies a chemical reaction that occurs by injecting a chemical into the water to be treated, in association with identification information of each chemical, and stores it as a chemical injection model,
A water treatment facility is selected from the water treatment facility database via the input device, a chemical injection model is selected from the chemical injection model database, and raw water information for specifying the quality of raw water that is the initial state of the treated water is If input, based on the equipment performance information of the selected water treatment facility and the chemical reaction formula information of the selected chemical injection model, the injection amount of chemicals corresponding to the chemical injection model, and processing The treated water / chemical injection calculating unit for calculating the water quality after,
A display control unit for displaying the raw water information, facility performance information of the selected water treatment facility, the selected medicinal model, and a calculation result by the treated water / medicine calculating unit on at least a display device When,
A water quality prediction apparatus comprising: In the water treatment facility database, the types of chemical injection processing required when performing treatment by the water treatment facility, and the identification information of the chemical injection model that can be selected in the type are included in the identification information of each water treatment facility. Stored in correspondence,
When the water treatment facility is selected via the input device, the display control unit is configured to allow the plurality of chemical injection models corresponding to the water treatment facility to be selected via the input device. The water quality prediction apparatus according to claim 1, wherein the water quality prediction apparatus is displayed. In the water treatment facility database, the unit price of each water treatment facility is stored in association with the identification information of the water treatment facility,
The drug injection model database stores the price per unit volume of the drug corresponding to each drug injection model in association with the identification information of the drug injection model,
The unit price of the water treatment facility selected through the input device, the price per unit volume of the chemical corresponding to the chemical injection model selected through the input device, and the treated water / chemical injection calculation unit The water quality prediction apparatus according to claim 1, further comprising a cost calculation unit that calculates an equipment cost based on the calculated injection amount of the medicine. In the chemical injection model database, the physical properties of the chemicals corresponding to each chemical injection model are stored in association with the identification information of the chemical injection model,
The water quality prediction device according to claim 1, wherein the display control unit displays physical properties of the medicinal injection model on the display device when the medicinal injection model is selected via the input device. When the fluctuation information including the fluctuation width for each water quality item of raw water and the fluctuation time corresponding to the fluctuation width is input via the input device, the treated water / chemical injection calculating unit The water quality fluctuations of the treated water that has been treated by the water treatment equipment and chemical injection model selected via
The water quality prediction device according to claim 1, wherein the display control unit causes the display device to display the calculation result of the water quality variation by the treated water / chemical injection calculation unit as image information. A water treatment facility database for storing facility performance information for identifying the performance of the water treatment facility for treating the water to be treated, in association with the identification information of each water treatment facility;
A chemical injection model database that stores chemical reaction formula information that identifies a chemical reaction that occurs by injecting a chemical into the water to be treated, in association with identification information of each chemical, and stores it as a chemical injection model,
A water quality prediction device comprising
A water treatment facility is selected from the water treatment facility database via the input device, a chemical injection model is selected from the chemical injection model database, and raw water information for specifying the quality of raw water that is the initial state of the treated water is If input, based on the equipment performance information of the selected water treatment facility and the chemical reaction formula information of the selected chemical injection model, the injection amount of chemicals corresponding to the chemical injection model, and processing Water treatment / chemical injection calculation processing to calculate the water quality after,
Display control processing for displaying on the display device at least the raw water information, equipment performance information of the selected water treatment facility, the selected chemical injection model, and a calculation result by the treated water / chemical injection calculation unit When,
Water quality prediction method characterized by performing.

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